WO2024060159A1 - Communication method, related apparatus, readable storage medium and chip system - Google Patents

Abstract

Disclosed in the present application are a communication method, a related apparatus, a readable storage medium and a chip system, which are expected to flexibly configure relevant parameters of a pilot and meet more service requirements. In the present application, a first terminal apparatus acquires a pilot, wherein the pilot has an association relationship with a first parameter, and the first parameter comprises at least one of the number of network apparatuses in an applicable place of the first terminal apparatus, the number of terminal apparatuses in the applicable place of the first terminal apparatus, the density of the terminal apparatuses in the applicable place, size information of the applicable place, a scenario type of the applicable place, a channel type corresponding to the applicable place, a data transmission rate threshold value, a data transmission delay threshold value, a data transmission bit error rate threshold value and a data transmission reliability threshold value; and the first terminal apparatus performs communication according to the pilot. Therefore, relevant parameters of a pilot can be more flexibly configured according to a first parameter, thereby improving the communication performance and meeting more service requirements.

Description

A communication method, related device, readable storage medium and chip system Technical field

The present application relates to the field of communication technology, and in particular, to a communication method, related devices, readable storage media and chip systems.

Background technique

Ultra-reliability low latency communication (URLLC), as one of the three major application scenarios of the fifth generation mobile communication technology (5G), is a typical scenario for autonomous driving, A wide range of applications in industrial manufacturing, Internet of Vehicles, and smart grids are critical. URLLC has different requirements for latency, reliability, and bandwidth in different scenarios. In order to meet the latency and reliability requirements of various scenarios, it is necessary to determine the relevant parameters of the pilot in the communication system for data transmission.

However, the current method for configuring pilot-related parameters is not flexible enough and may not be able to meet the needs of services that require high latency and reliability, such as URLLC services.

Contents of the invention

This application provides a communication method, related devices, readable storage media, and a chip system, with a view to flexibly configuring pilot-related parameters to meet more business needs.

In a first aspect, a communication method is provided, which method can be applied to a first terminal device. The first terminal device can be a terminal device, or be executed by a component (such as a chip, chip system, unit or module, etc.) inside the terminal device. , or it can also be implemented by a logic module or software that can realize all or part of the functions of the first terminal device, which is not limited in this application.

The first terminal device obtains a pilot, and the pilot is associated with a first parameter. The first parameter includes the number of network devices in the applicable location of the first terminal device, the number of terminal devices in the applicable location of the first terminal device, and the number of terminal devices in the applicable location. The density of terminal devices, the size information of the applicable place, the scene type of the applicable place, the channel type corresponding to the applicable place, the data transmission rate threshold, the data transmission delay threshold, the data transmission bit error rate threshold, or the data transmission reliability threshold. At least one item. The first terminal device communicates based on the pilot.

Based on the above solution, the first terminal device determines the pilot according to the first pilot characteristic information, and the first pilot characteristic information has a correlation relationship with the first parameter, and because the first parameter includes the number of network devices in the applicable location of the first terminal device , the number of terminal devices in the applicable place for the first terminal device, the density of terminal devices in the applicable place, the size information of the applicable place, the scene type of the applicable place, the channel type corresponding to the applicable place, the data transmission rate threshold, and the data transmission delay At least one of a threshold, a data transmission bit error rate threshold, or a data transmission reliability threshold. In this way, the relevant parameters of the pilot can be more flexibly configured according to the first parameter, thereby improving communication performance and meeting more business requirements.

It should be understood that the pilot is also called a reference signal or a training sequence, which is a known signal for both the transmitting device (the second communication device) and the receiving device (the first communication device). The transmitting device sends a known reference signal, which is received by the receiving device after propagating through the channel. The receiving device estimates the channel by comparing the received reference signal with the known reference signal.

In a possible implementation, the pilot is a pilot among the pilots included in the first pilot set. The first pilot set has an associated relationship with the first parameter. Compared with the solution in which the pilot directly establishes an association relationship with the first parameter, this solution can simplify the association relationship. The first terminal device can determine the first pilot set to be used based on the first parameter, and then use the first pilot set to communicate via pilots.

For example, the first terminal device may negotiate with other terminal devices to determine the pilot used by the first terminal device, or the first terminal device may determine the pilot used by the first terminal device based on information indicating the pilot from its own network device. The pilot, or the first terminal device may determine the pilot used by the first terminal device according to the pilot allocation information associated with the first pilot set. The pilot allocation information indicates how pilots are allocated among multiple terminal devices. For example, the pilot allocation information may indicate the identity of the terminal device corresponding to the pilot in the first pilot set. The pilot allocation information may be included in the first pilot feature information associated with the subsequent first pilot set, or may be set independently from the first pilot feature information.

In a possible implementation, the pilot is a pilot among the pilots included in the first pilot set. The first pilot set has an associated relationship with the first pilot feature information; the first pilot feature information includes: at least one of density, number or length of the pilots in the first pilot set. The first pilot characteristic information has a correlation relationship with the first parameter.

Compared with the solution in which the pilot directly establishes an association relationship with the first parameter, this solution can simplify the association relationship. The first terminal device can determine the pilot characteristic information (such as the first pilot characteristic) of the pilot to be used based on the first parameter. information), and then the pilot can be obtained according to the first pilot characteristic information. For example, the first terminal device can generate a pilot that conforms to the pilot characteristic information according to the first pilot characteristic information. For example, the first terminal device can interact with other terminal devices so that the pilots assigned to the terminal devices in the area correspond to The pilot characteristic information meets the requirements of the first pilot characteristic information. For another example, the first terminal device determines the first pilot set based on the association between the first pilot characteristic information and the first pilot set, and then communicates based on the pilots in the first pilot set. In another possible implementation, the first pilot characteristic information also includes pilot allocation information, and the pilot allocation information indicates the allocation mode of each pilot in the terminal device. For example, the pilot allocation information indicates the pilot allocation information in the first pilot set. The identification of the terminal device to which the pilot is allocated.

In a possible implementation, the first pilot feature information is one candidate pilot feature information among multiple candidate pilot feature information. The candidate pilot feature information includes first candidate pilot feature information and second candidate pilot feature information; the first candidate pilot feature information includes at least one of pilot density, pilot number, or pilot length. ; The second candidate pilot feature information includes at least one of pilot density, pilot number, or pilot length. At least one of the density of pilots, the number of pilots, or the length of pilots in the first candidate pilot feature information and the second candidate pilot feature information are different.

It can be seen that in the embodiment of the present application, multiple candidate pilot feature information can be preset, and two different candidate pilot feature information can be associated with different first parameters. In this way, the first terminal device can determine the specific value of the first parameter according to the specific value of the first parameter. Candidate pilot feature information matching the first parameter is selected, thereby improving the applicability of the solution.

In a possible implementation, the plurality of candidate pilot feature information are predefined. Alternatively, the first terminal device receives information indicating a plurality of candidate pilot feature information from the first network device. This increases the flexibility of the solution.

In a possible implementation, the first terminal device determines the first parameter. The first terminal device determines the first pilot characteristic information according to the first parameter and the correlation between the first parameter and the first pilot characteristic information. In this way, the first terminal device can obtain the first parameter by itself, and then obtain the first pilot characteristic information according to the first parameter. Or the first terminal device may also receive the first pilot characteristic information from the network device. In this way, the flexibility of the solution can be improved.

In a possible implementation, the first terminal device receives information from the first network device indicating the correlation between the first parameter and the first pilot characteristic information. In this way, the first terminal device can find the first pilot characteristic information based on the correlation between the received first parameter and the first pilot characteristic information and in combination with the first parameter. That is to say, the first terminal device can find the first pilot characteristic information by searching for the correlation relationship based on the actually obtained first parameter, thereby reducing the signaling interaction process with the network device and reducing power consumption.

In a possible implementation, the first parameter is associated with a plurality of pilot feature information, for example, the first parameter is also associated with other pilot feature information (such as pilot feature information a). In this way, the first network device can determine which association relationship is used this time based on some parameters. For example, the first network device determines the first parameter and the first pilot feature used this time based on the scene type, user category or channel status of the applicable place, etc. If the first network device determines the correlation between the information, the first network device may send the correlation between the first parameter and the first pilot feature information to the first terminal device.

Optionally, the association between the first parameter and the first pilot characteristic information may be predefined by the protocol, or may be informed by the network device to the terminal device through signaling, or may be predefined by the protocol. Multiple associations, the network device notifies the terminal device of one of the associations used through signaling.

In a possible implementation, the pilot is a pilot among the pilots included in the first pilot set, and the first pilot set has an associated relationship with the first parameter. The first terminal device receives pilot indication information from the first network device, the pilot indication information indicates the first pilot set, and the first terminal device determines the first pilot set according to the pilot indication information. In this way, the first terminal device can determine which pilot in the pilot set to use based on the pilot indication information. This solution can reduce the workload of the first terminal device and reduce the power consumption of the first terminal device.

In a possible implementation, the number of bits occupied by the pilot indication information has a correlation with the first parameter.

In a possible implementation, the first terminal device determines the first parameter, and the first terminal device determines the number of bits occupied by the pilot indication information based on the correlation between the number of bits occupied by the pilot indication information and the first parameter. The first terminal device obtains the pilot indication information from a preset position of the message carrying the pilot indication information according to the number of bits occupied by the pilot indication information. The first terminal device determines the first pilot set according to the pilot indication information.

In this way, the number of bits occupied by the pilot indication information can be flexibly changed according to the specific value of the first parameter, thereby further improving the flexibility of the solution. For example, when the number of pilots in the first pilot set associated with the first parameter is relatively large, the number of bits occupied by the pilot indication information may be larger. For another example, the number of pilots in the first pilot set associated with the first parameter is relatively large. When the number is small, the number of bits occupied by the pilot indication information can be smaller. In this way, on the premise that the pilot indication information can indicate the first pilot set, the number of bits occupied by the pilot indication information can be reduced, thereby reducing the amount of data to be transmitted and reducing the delay.

In a possible implementation, the pilot indication information indicates part of the pilots in the first pilot set. For example, the pilot indication information is: the sequence identifier of each pilot in the partial pilot. In this way, the first terminal device can determine the first pilot set according to the sequence identifiers of the pilots in the partial pilots. It can be seen that this method can reduce the amount of data transmitted, thereby saving signaling overhead and improving data transmission efficiency.

In a possible implementation, the first terminal device receives information indicating the pilot from the first network device. The first terminal device determines the pilot based on the information indicating the pilot. In this way, the first terminal device can save the step of searching for pilots from the first pilot set, thereby reducing the workload of the first terminal device and reducing the power consumption of the first terminal device.

In a possible implementation, the first pilot characteristic information is determined based on channel state information between multiple terminal devices and multiple network devices, and the multiple terminal devices include the first terminal device.

In a possible implementation, the first terminal device receives a reference signal from a first network device among multiple network devices, and the first terminal device determines channel state information with the first network device based on the reference signal.

In a possible implementation manner, after the first terminal device determines the channel state information between the first terminal device and the first network device according to the reference signal, the first terminal device sends the channel state information between the first terminal device and the first network device to the first network device.

In a possible implementation, the first terminal device receives reporting instruction information from the first network device. The reporting instruction information instructs the first terminal device to periodically send channel state information between the first terminal device and the first network device. The reporting instruction information also includes: the cycle length for the first terminal device to send the channel state information between the first terminal device and the first network device, and the first terminal device to send the channel state information between the first terminal device and the first network device. The first network device receives the resource information of the channel state information between the first terminal device and the first network device, and the first terminal device sends the resource information occupied by the channel state information between the first terminal device and the first network device. At least one of the number of bits, or the number of bits occupied by the channel state information between the first terminal device and the first network device received by the first receiving point. In this way, the first network device can report channel status information according to the reporting instruction information.

In a possible implementation, the plurality of terminal devices further include one or more second terminal devices. The method further includes at least one of the following: the first terminal device receives unicast, multicast or broadcast from the first network device indicating channel status information between the second terminal device and the first network device; or, the first The terminal device receives unicast or multicast information from the second terminal device indicating channel status information between the second terminal device and the first network device. In this way, the first terminal device can obtain channel state information between multiple terminal devices and multiple network devices, and then the first terminal device can determine a pilot matching the multiple channel state information based on the obtained channel state information. Feature information.

In a possible implementation, the first terminal device sends the channel state information between the first terminal device and the first network device to the second terminal device. The first terminal device multicasts the channel state information between the first terminal device and the first network device to the terminal devices in the first terminal device group. In this way, other terminal devices can obtain channel state information between multiple terminal devices and multiple network devices, and then the first terminal device can determine pilot characteristics matching the multiple channel state information based on the obtained channel state information. information.

In a possible implementation, when the change amount of the channel state information between the first terminal device and the first network device is greater than a preset channel state information change threshold, the first terminal device Perform at least one of the following: the first terminal device sends the updated channel state information between the first terminal device and the first network device to the first network device; the first terminal device sends the updated channel state information to the second terminal device the updated channel state information between the first terminal device and the first network device; or, the first terminal device multicasts the updated channel state information between the first terminal device and the first network device to the terminals in the first terminal device group Channel status information. In this way, the first terminal device can send channel state information with a large change, so that other devices can process it based on the latest channel state information.

In a possible implementation, the channel state information change threshold is preset, or is indicated by information indicating the channel state information change threshold from the first network device. In a possible implementation, the channel state information change amount threshold has a correlation relationship with the first parameter. In a possible implementation, two channel state information change thresholds associated with two different first parameters are different. In this way, the flexibility of setting the channel state information change threshold can be improved.

In a second aspect, a communication method is provided, which method can be applied to a first network device. The first network device can be a network device, or can be executed by an internal component of the network device (such as a chip, chip system, unit or module, etc.) , or it can also be implemented by a logic module or software that can realize all or part of the functions of the first network device, which is not limited in this application.

The first network device obtains a pilot, and the pilot is associated with a first parameter. The first parameter includes the number of network devices in the applicable location of the first terminal device, the number of terminal devices in the applicable location of the first terminal device, and the number of terminal devices in the applicable location. The density of terminal devices, the size information of the applicable place, the scene type of the applicable place, the channel type corresponding to the applicable place, the data transmission rate threshold, the data transmission delay threshold, the data transmission bit error rate threshold, or the data transmission reliability threshold. At least one item. The first network device communicates with the first terminal device according to the pilot.

Based on the above solution, the first terminal device determines the pilot according to the first pilot characteristic information, and the first pilot characteristic information has a correlation relationship with the first parameter, and because the first parameter includes the number of network devices in the applicable location of the first terminal device , the number of terminal devices in the applicable place for the first terminal device, the density of terminal devices in the applicable place, the size information of the applicable place, the scene type of the applicable place, the channel type corresponding to the applicable place, the data transmission rate threshold, and the data transmission delay At least one of a threshold, a data transmission bit error rate threshold, or a data transmission reliability threshold. It can be seen that in the embodiments of the present application, different scenarios, different service requirements, etc. can respectively correspond to pilot characteristic information, and then more reasonable pilots can be determined. This method can flexibly determine more reasonable pilots, thereby improving communication performance.

In a possible implementation, the pilot is a pilot among the pilots included in the first pilot set. The first pilot set has an associated relationship with the first parameter. Compared with the solution in which the pilot directly establishes an association relationship with the first parameter, this solution can simplify the association relationship. The first terminal device can determine the first pilot set to be used based on the first parameter, and then use the first pilot set to communicate via pilots.

For example, the first terminal device may negotiate with other terminal devices to determine the pilot used by the first terminal device, or the first terminal device may determine the pilot used by the first terminal device based on information indicating the pilot from its own network device. The pilot, or the first terminal device may determine the pilot used by the first terminal device according to the pilot allocation information associated with the first pilot set. The pilot allocation information indicates how pilots are allocated among multiple terminal devices. For example, the pilot allocation information may indicate the identity of the terminal device corresponding to the pilot in the first pilot set. The pilot allocation information may be included in the first pilot feature information associated with the subsequent first pilot set, or may be set independently from the first pilot feature information.

In a possible implementation, the pilot is a pilot among the pilots included in the first pilot set. The first pilot set has an associated relationship with the first pilot feature information; the first pilot feature information includes: at least one of density, number or length of the pilots in the first pilot set. The first pilot characteristic information has a correlation relationship with the first parameter.

Compared with the solution in which the pilot directly establishes an association relationship with the first parameter, this solution can simplify the association relationship. The first terminal device can determine the pilot characteristic information (such as the first pilot characteristic) of the pilot to be used based on the first parameter. information), and then the pilot can be obtained according to the first pilot characteristic information. For example, the first terminal device can generate a pilot that conforms to the pilot characteristic information according to the first pilot characteristic information. For example, the first terminal device can interact with other terminal devices so that the pilots assigned to the terminal devices in the area correspond to The pilot characteristic information meets the requirements of the first pilot characteristic information. For another example, the first terminal device determines the first pilot set based on the association between the first pilot characteristic information and the first pilot set, and then communicates based on the pilots in the first pilot set. In another possible implementation, the first pilot characteristic information also includes pilot allocation information, and the pilot allocation information indicates the allocation mode of each pilot in the terminal device. For example, the pilot allocation information indicates the pilot allocation information in the first pilot set. The identification of the terminal device to which the pilot is allocated.

In a possible implementation, the first pilot feature information is one candidate pilot feature information among multiple candidate pilot feature information. The candidate pilot feature information includes first candidate pilot feature information and second candidate pilot feature information; the first candidate pilot feature information includes at least one of pilot density, pilot number, or pilot length. ; The second candidate pilot feature information includes at least one of pilot density, pilot number, or pilot length. At least one of the density of pilots, the number of pilots, or the length of pilots in the first candidate pilot feature information and the second candidate pilot feature information are different.

It can be seen that in the embodiment of the present application, multiple candidate pilot feature information can be preset, and two different candidate pilot feature information can be associated with different first parameters. In this way, the first terminal device can determine the specific value of the first parameter according to the specific value of the first parameter. Candidate pilot feature information matching the first parameter is selected, thereby improving the applicability of the solution.

In a possible implementation, the plurality of candidate pilot feature information are predefined; or, the first network device sends information indicating the plurality of candidate pilot feature information to the first terminal device. This increases the flexibility of the solution.

In a possible implementation, the first network device determines the first parameter, and the first network device determines the first pilot feature information based on the first parameter and the correlation between the first parameter and the first pilot feature information. In this way, the first terminal device can obtain the first parameter by itself, and then obtain the first pilot characteristic information according to the first parameter. Or the first terminal device may also receive the first pilot characteristic information from the network device. In this way, the flexibility of the solution can be improved.

In a possible implementation, the first network device sends information indicating the correlation between the first parameter and the first pilot characteristic information to the first terminal device. In this way, the first terminal device can find the first pilot characteristic information based on the correlation between the received first parameter and the first pilot characteristic information and in combination with the first parameter. That is to say, the first terminal device can find the first pilot characteristic information by searching for the correlation relationship based on the actually obtained first parameter, thereby reducing the signaling interaction process with the network device and reducing power consumption.

In a possible implementation, the first parameter is associated with a plurality of pilot feature information, for example, the first parameter is also associated with other pilot feature information (such as pilot feature information a). In this way, the first network device can determine which association relationship is used this time based on some parameters. For example, the first network device determines the first parameter and the first pilot feature used this time based on the scene type, user category or channel status of the applicable place, etc. If the first network device determines the correlation between the information, the first network device may send the correlation between the first parameter and the first pilot feature information to the first terminal device.

Optionally, the association between the first parameter and the first pilot characteristic information may be predefined by the protocol, or may be informed by the network device to the terminal device through signaling, or may be predefined by the protocol. Multiple associations, the network device notifies the terminal device of one of the associations used through signaling.

In a possible implementation, the pilot is a pilot among the pilots included in the first pilot set, and the first pilot set has an associated relationship with the first parameter. The first network device sends pilot indication information to the first terminal device, and the pilot indication information indicates the first pilot set. In this way, the first terminal device can determine which pilot in the pilot set to use based on the pilot indication information. This solution can reduce the workload of the first terminal device and reduce the power consumption of the first terminal device.

In a possible implementation, the number of bits occupied by the pilot indication information is associated with the first parameter. The first network device determines the first parameter, the first network device determines the number of bits occupied by the pilot indication information according to the association between the number of bits occupied by the pilot indication information and the first parameter, and the first network device sends the pilot indication information according to the number of bits occupied by the pilot indication information.

In this way, the number of bits occupied by the pilot indication information can be flexibly changed according to the specific value of the first parameter, thereby further improving the flexibility of the solution. For example, when the number of pilots in the first pilot set associated with the first parameter is relatively large, the number of bits occupied by the pilot indication information may be larger. For another example, the number of pilots in the first pilot set associated with the first parameter is relatively large. When the number is small, the number of bits occupied by the pilot indication information can be smaller. In this way, on the premise that the pilot indication information can indicate the first pilot set, the number of bits occupied by the pilot indication information can be reduced, thereby reducing the amount of data to be transmitted and reducing the delay.

In a possible implementation, the pilot indication information indicates part of the pilots in the first pilot set. The pilot indication information is: the sequence identifier of each pilot in the partial pilot. In this way, the first terminal device can determine the first pilot set according to the sequence identifiers of the pilots in the partial pilots. It can be seen that this method can reduce the amount of data transmitted, thereby saving signaling overhead and improving data transmission efficiency.

In a possible implementation, the first network device sends information indicating the pilot to the first terminal device. In this way, the first terminal device can save the step of searching for pilots from the first pilot set, thereby reducing the workload of the first terminal device and reducing the power consumption of the first terminal device.

In a possible implementation, the first pilot characteristic information is determined based on channel state information between multiple terminal devices and multiple network devices, and the multiple terminal devices include the first terminal device. In a possible implementation, the first network device sends a reference signal, and the reference signal is used to determine channel state information between the first network device and a terminal device among the plurality of terminal devices.

In a possible implementation, the first network device receives channel state information between the first terminal device and the first network device from the first terminal device. In a possible implementation, the first network device sends reporting instruction information to the first terminal device. The reporting instruction information instructs the first terminal device to periodically send channel state information between the first terminal device and the first network device. The reporting instruction information also includes: the cycle length for the first terminal device to send the channel state information between the first terminal device and the first network device, and the first terminal device to send the channel state information between the first terminal device and the first network device. The first network device receives the resource information of the channel state information between the first terminal device and the first network device, and the first terminal device sends the resource information occupied by the channel state information between the first terminal device and the first network device. At least one of the number of bits, or the number of bits occupied by the channel state information between the first terminal device and the first network device received by the first receiving point. In this way, the first network device can report channel status information according to the reporting instruction information.

In a possible implementation, the first network device unicasts, multicasts or broadcasts to indicate the channel status information between the first network device and the first terminal device, and/or the first network device unicasts, multicasts or broadcasts. or broadcast indicating channel status information between the first network device and the second terminal device. In this way, the first terminal device can obtain channel state information between multiple terminal devices and multiple network devices, and then the first terminal device can determine a pilot matching the multiple channel state information based on the obtained channel state information. Feature information.

In a possible implementation, the first network device receives updated channel state information between the first terminal device and the first network device from the first terminal device, and the updated channel state information between the first terminal device and the first network device is sent by the first terminal device when the change amount of the channel state information between the first terminal device and the first network device is greater than a preset channel state information change amount threshold. In this way, the first terminal device can send out the channel state information with a large change amount so that other devices can process it according to the latest channel state information.

In a possible implementation, the channel state information change threshold is preset, or is indicated by information indicating the channel state information change threshold from the first network device. In a possible implementation, the channel state information change amount threshold has a correlation relationship with the first parameter. In a possible implementation, two channel state information change thresholds associated with two different first parameters are different. In this way, the flexibility of setting the channel state information change threshold can be improved.

In the third aspect, embodiments of the present application provide a communication method. This solution can be executed by a terminal device, a network device, or other devices. The embodiments of the present application are not limited. This solution will be used in the following. One device execution is taken as an example for introduction. The first device may be a terminal device, a network device, or other devices. The method includes:

The first device acquires channel state information between multiple terminal devices and multiple network devices. The first device determines second pilot feature information associated with the first parameter based on the channel state information. The second pilot feature information includes pilot quantity and pilot allocation information. The pilot allocation information indicates how the number of pilots is allocated among multiple terminal devices. The first parameter includes the number of network devices in the applicable location of the first terminal device, the The number of terminal devices in the location, the density of terminal devices in the applicable location, the size information of the applicable location, the scene type of the applicable location, the channel type corresponding to the applicable location, data transmission rate threshold, data transmission delay threshold, data transmission error rate threshold, or at least one of the data transmission reliability thresholds. The first device determines a first number of terminal devices that meet a preset rate requirement value based on the second pilot characteristic information. When the first number is less than the preset user number threshold, the first device updates the second pilot feature information associated with the first parameter to obtain the first pilot feature information associated with the first parameter.

It can be seen that since the pilot characteristic information associated with the first parameter is re-updated when the first number is less than the preset user number threshold, the purpose of optimizing the pilot allocation scheme can be achieved so that the rate requirement value is met. The number of terminal devices is not less than the preset user number threshold.

In a possible implementation, the second pilot characteristic information indicates that there are at least two terminals, and at least two terminals multiplex one pilot. In this way, the effect of saving the number of pilots can be achieved.

In a possible implementation, when the first number is less than a preset user number threshold, the first device increases the number of pilots indicated by the second pilot characteristic information to obtain the first pilot characteristic information. In this way, the pilot allocation scheme can be optimized by increasing the number of pilots, so that the number of terminal devices that meet the rate threshold meets the requirements.

In a possible implementation, when the first number is less than the preset user number threshold, for the first terminal device that does not meet the rate requirement value, the second pilot characteristic information indicates the first terminal device and The second terminal device reuses the same pilot. The first device sets a first requirement, and the first requirement indicates that the first terminal device and the second terminal device cannot reuse the same pilot. The first device performs one or more iterations according to the first requirement until the preset iteration stop condition is met, and obtains the first pilot characteristic information associated with the first parameter. Since the terminal devices that can share the same pilot in the original solution are set to be unable to share the same pilot, the purpose of optimizing the pilot allocation solution can be achieved by increasing the number of pilots to reduce interference, so that the rate can be satisfied The threshold number of end devices meets the requirement.

In a possible implementation, the second pilot characteristic information indicates that the first terminal device multiplexes the first pilot with multiple third terminal devices. The second terminal device is the third terminal device that is physically closest to the first terminal device among the plurality of third terminal devices. In this way, interference from the first terminal device can be reduced, thereby allowing the rate of the first terminal device to meet the rate requirement.

In a possible implementation, the preset iteration stop condition includes at least one of the following: the number of terminal devices that meet the preset rate requirement value is not less than the preset user number threshold; the current number of pilots is the same as the pilot number. The difference between the initial values of the frequency number is greater than the preset value; or the number of iterations is greater than the preset iteration number. In this way, the iteration can be stopped when the number of terminal devices with the preset rate demand value is not less than the preset user number threshold. Or stop the iteration when the difference between the current number of pilots and the initial value of the number of pilots is greater than the preset value to prevent the number of pilots from being too large, or stop the iteration when the number of iterations is greater than the preset number of iterations to prevent Too many iterations.

A fourth aspect provides a communication device, which may be the aforementioned first terminal device, second terminal device or first device. The communication device may include a communication unit and a processing unit to perform any one of the above-mentioned first to third aspects, or to perform any possible implementation manner of the first to third aspects. The communication unit is used to perform functions related to sending and receiving. Optionally, the communication unit includes a receiving unit and a sending unit. In one design, the communication device is a communication chip, the processing unit may be one or more processors or processor cores, and the communication unit may be an input/output circuit or port of the communication chip.

In another design, the communication unit may be a transmitter and a receiver, or the communication unit may be a transmitter and a receiver.

Optionally, the communication device further includes various modules that can be used to perform any one of the above-mentioned first to third aspects, or to perform any possible implementation manner of the first to third aspects.

A fifth aspect provides a communication device, which may be the aforementioned first terminal device, second terminal device or first device. The communication device may include a processor and a memory to perform any one of the above-mentioned first to third aspects, or to perform any possible implementation manner of the first to third aspects. Optionally, a transceiver is also included, the memory is used to store computer programs or instructions, and the processor is used to call and run the computer program or instructions from the memory. When the processor executes the computer program or instructions in the memory, the The communication device implements any one of the above-mentioned first to third aspects, or implements any possible implementation manner of the first to third aspects.

Optionally, there are one or more processors and one or more memories.

Optionally, the memory can be integrated with the processor, or the memory can be provided separately from the processor.

Optionally, the transceiver may include a transmitter (transmitter) and a receiver (receiver).

A sixth aspect provides a communication device, which may be the aforementioned first terminal device, second terminal device or first device. The communication device may include a processor to perform any one of the above-mentioned first to third aspects, or to perform any possible implementation manner of the first to third aspects. The processor is coupled to a memory. Optionally, the communication device further includes a memory. Optionally, the communication device further includes a communication interface, and the processor is coupled with the communication interface.

In an implementation manner, when the communication device is a first terminal device, a second terminal device or a first device, the communication interface may be a transceiver or an input/output interface. Alternatively, the transceiver may be a transceiver circuit. Alternatively, the input/output interface may be an input/output circuit.

In another implementation, when the communication device is a chip or a chip system, the communication interface may be an input/output interface, interface circuit, output circuit, input circuit, pin or related circuit on the chip or chip system, etc. . A processor may also be embodied as a processing circuit or logic circuit.

In a seventh aspect, a system is provided, which includes one or more of the above network devices.

In a possible implementation, the system may also include one or more terminal devices, such as the above-mentioned first terminal device and/or the second terminal device.

In an eighth aspect, a computer program product is provided. The computer program product includes: a computer program (which may also be called a code, or an instruction). When the computer program is run, it causes the computer to execute the above-mentioned steps in the first to third aspects. Any aspect, or any possible implementation manner of performing the first to third aspects.

In a ninth aspect, a computer-readable storage medium is provided. The computer-readable medium stores a computer program (which can also be called a code, or an instruction) and when run on a computer, causes the computer to execute the above-mentioned first to third aspects. Any one of the aspects, or any possible implementation manner of implementing the first to third aspects.

In a tenth aspect, a chip system is provided, and the chip system may include a processor. The processor is coupled to a memory and may be used to execute any one of the above-mentioned first to third aspects, or to execute any possible implementation manner of the first to third aspects. Optionally, the chip system also includes a memory. Memory is used to store computer programs (also called codes, or instructions). The processor is used to call and run the computer program from the memory, so that the device installed with the chip system executes any one of the above-mentioned first to third aspects, or executes any possible method of the first to third aspects. implementation.

In an eleventh aspect, a processing device is provided, including: an interface circuit and a processing circuit. Interface circuits may include input circuits and output circuits. The processing circuit is configured to receive signals through the input circuit and transmit signals through the output circuit, so that any one of the above-mentioned first to third aspects, or any possible implementation manner of performing the first to third aspects is accomplish.

In a specific implementation process, the above-mentioned processing device may be a chip, the input circuit may be an input pin, the output circuit may be an output pin, and the processing circuit may be a transistor, a gate circuit, a flip-flop, and various logic circuits. The input signal received by the input circuit may be received and input by, for example, but not limited to, the receiver, and the signal output by the output circuit may be, for example, but not limited to, output to and transmitted by the transmitter, and the input circuit and the output A circuit may be the same circuit that functions as an input circuit and an output circuit at different times. This application does not limit the specific implementation methods of the processor and various circuits.

In one implementation, when the communication device is a first terminal device, a second terminal device or a first device. The interface circuit may be the first terminal device, the second terminal device, or a radio frequency processing chip in the first device, and the processing circuit may be a baseband processing chip in the first terminal device, the second terminal device, or the first device.

In yet another implementation manner, the communication device may be a first terminal device, a second terminal device, or some components in the first device, such as an integrated circuit product such as a system chip or a communication chip. The interface circuit may be an input/output interface, interface circuit, output circuit, input circuit, pin or related circuit on the chip or chip system, etc. The processing circuitry may be logic circuitry on the chip.

Description of the drawings

FIG1A is a schematic diagram of a communication scenario according to an embodiment of the present application;

Figure 1B is a schematic diagram of another communication scenario according to an embodiment of the present application;

Figure 1C is a schematic diagram of a communication scenario according to an embodiment of the present application;

FIG1D is a schematic diagram of a communication scenario according to an embodiment of the present application;

Figure 1E is a schematic diagram of a communication scenario according to an embodiment of the present application;

Figure 2 is a schematic flow chart of a communication method provided by an embodiment of the present application;

FIG3 is a schematic flow chart of a communication method provided in an embodiment of the present application;

Figure 4A is a schematic diagram of the average access probability of the scheme provided by the embodiment of the present application, the orthogonal pilot scheme and the Dsatur scheme;

Figure 4B is a schematic diagram of the number of pilots corresponding to the scheme provided by the embodiment of the present application, the orthogonal pilot scheme and the Dsatur scheme;

Figure 5A is a schematic diagram of an undirected graph provided by an embodiment of the present application;

Figure 5B is a schematic diagram of a pilot allocation scheme corresponding to the undirected graph shown in Figure 5A;

Figure 5C is a possible schematic diagram of Figure 5B after iteration;

FIG5D is a schematic diagram of a pilot allocation scheme determined based on the undirected graph shown in FIG5C ;

Figure 6 is a schematic diagram of an effect provided by an embodiment of the present application;

Figure 7 is a schematic block diagram of a communication device provided by an embodiment of the present application;

Figure 8 is a schematic block diagram of a communication device provided by an embodiment of the present application;

Figure 9 is a schematic block diagram of another communication device provided by an embodiment of the present application.

Detailed ways

The technical solutions in this application will be described below with reference to the accompanying drawings.

The technical solution provided by this application can be applied to various communication systems, such as: long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (time division duplex), TDD) system, universal mobile telecommunications system (UMTS), 5G mobile communication system, new radio (NR) system or other evolved communication system, and the next generation mobile communication system of 5G communication system, Section 1 Sixth generation (6G) communication system, or future communication system, etc.

The technical solution provided by this application can also be applied to enhanced mobile broadband (eMBB) communication, ultra-reliable low latency communication (URLLC), machine type communication (MTC), machine Intercommunication long term evolution-machine (LTE-M), device to device (D2D) network, machine to machine (M2M) network, Internet of things (IoT) network, narrowband internet of things (NB-IoT) or other networks. Among them, the IoT network may include, for example, the Internet of Vehicles. Among them, the communication methods in the Internet of Vehicles system are collectively called vehicle to other devices (vehicle to X, V2X, X can represent anything). For example, the V2X can include: vehicle to vehicle (vehicle to vehicle, V2V) communication. Infrastructure (vehicle to infrastructure, V2I) communication, communication between vehicles and pedestrians (vehicle to pedestrian, V2P) or vehicle and network (vehicle to network, V2N) communication, etc.

The technical solution provided by this application can also be applied to non-terrestrial network (NTN) communication systems such as satellite communication systems, where the NTN communication system can be integrated with the wireless communication system.

The technical solutions of the embodiments of this application can also be applied to satellite inter-satellite communication systems, wireless screen projection systems, customer premise equipment (CPE), virtual reality (VR) communication systems, and access and backhaul integration integrated access backhaul (IAB) system, wireless fidelity (Wi-Fi) communication system, or optical communication system, etc.

The technical solution provided in this application can also be applied to device-to-device (D2D) communication systems, vehicle-to-everything (V2X) communication systems, machine-to-machine (M2M) communication systems, MTC systems, massive machine type communications (mMTC) and Internet of Things (IoT) communication systems, communication perception integrated systems or other communication systems.

Among them, eMBB can refer to high-traffic mobile broadband services such as three-dimensional (3D)/ultra-high-definition video. Specifically, eMBB can further improve network speed, user experience and other performance based on mobile broadband services. For example, when users watch 4K high-definition videos, the peak network speed can reach 10Gbps.

URLLC can refer to services with high reliability, low latency, and extremely high availability. Specifically, URLLC can include the following communication scenarios and applications: industrial applications and control, traffic safety and control, remote manufacturing, remote training, remote surgery, driverless driving, industrial automation, security industry, etc.

MTC can refer to low-cost, coverage-enhanced services, and can also be called M2M. mMTC refers to large-scale Internet of Things business.

NB-IoT can be a service with wide coverage, multiple connections, low speed, low cost, low power consumption, and excellent architecture. Specifically, NB-IoT can include smart water meters, smart parking, smart pet tracking, smart bicycles, smart smoke detectors, smart toilets, smart vending machines, and so on.

V2X enables communication between vehicles, vehicles and network equipment, and network equipment and network equipment, thereby obtaining a series of traffic information such as real-time traffic conditions, road information, and pedestrian information. It also provides in-vehicle entertainment information to improve driving safety, Reduce congestion and improve traffic efficiency.

CPE can refer to a mobile signal access device that receives mobile signals and forwards them as wireless fidelity (WiFi) signals. It can also refer to a device that converts high-speed 4G or 5G signals into WiFi signals, which can support more Internet access at the same time. number of mobile terminals. CPE can be widely used in wireless network access in rural areas, towns, hospitals, units, factories, communities, etc., which can save the cost of laying wired networks.

The technical solutions of the embodiments of this application do not specifically limit the applied communication system and the network architecture of the communication system.

In the embodiment of the present application, communication between network equipment and terminal equipment, between network equipment and network equipment, and between terminal equipment and terminal equipment can be carried out through licensed spectrum, communication can also be carried out through unlicensed spectrum, or can be carried out simultaneously through communication. Communicate over licensed and unlicensed spectrum. The technical solution of this application is applicable to low-frequency scenarios such as sub 6G (referring to the frequency band below 6GHz, specifically, it may refer to 6 gigahertz (GHz) with an operating frequency of 450 megahertz (MHz) to 6000MHz (can be referred to as 6G)), also suitable for high-frequency scenarios (such as above 6GHz, such as 28GHz, 70GHz, etc.), terahertz (terahertz, THz), optical communications, etc. For example, network equipment and terminals can communicate through spectrum below 6 GHz or above 6 GHz, or they can communicate using spectrum below 6 GHz and spectrum above 6 GHz at the same time. The embodiments of this application do not limit the spectrum resources used for communication.

In this application, the functions of the network device can also be performed by modules (such as chips) in the network device, or by a control subsystem that includes the functions of the network device. The control subsystem here containing network equipment functions can be the control center in the application scenarios of the above-mentioned terminals such as smart grid, industrial control, intelligent transportation, and smart cities. The functions of the terminal can also be performed by modules in the terminal (such as chips or modems), or by a device containing the terminal functions.

The technical solution provided by this application can also be applied to various types of communication links, such as universal user network (user to network interface universal, Uu) links, satellite links, sidelink (SL) links, central Links such as relay links. This application does not limit this.

To facilitate understanding of the embodiments of the present application, FIG. 1A, FIG. 1B, FIG. 1C, FIG. 1D, and FIG. 1E exemplarily illustrate possible architectural diagrams of several communication systems to which the embodiments of the present application are applicable.

As shown in FIG. 1A , the communication system includes at least two communication devices, such as a network device 101 and at least one terminal device 102 , wherein data communication can be performed between the network device 101 and the at least one terminal device 102 through a wireless connection. Specifically, the network device 101 can send downlink data to the terminal device 102; the terminal device 102 can also send uplink data to the network device 101.

As shown in FIG1B , the communication system includes a satellite 103, a terminal device 104, and may also include a base station 105. The satellite 103 may provide communication services for the terminal device 104. The satellite 103 may transmit downlink data to the terminal device 104, wherein the downlink data may be encoded using channel coding, and the channel-coded data may be modulated and transmitted to the terminal device 104. The terminal device 104 may transmit uplink data to the satellite 103, wherein the uplink data may also be encoded using channel coding, and the encoded data may be modulated and transmitted to the satellite 103. The satellite 103 may also communicate with the base station 105. The satellite 104 may be used as a base station or as a terminal device. Among them, the satellite 103 may refer to a drone, a hot air balloon, a low-orbit satellite, a medium-orbit satellite, a high-orbit satellite, etc. The satellite 103 may also refer to a non-ground base station or non-ground device, etc.

As shown in Figure 1C, the communication system may be satellite inter-satellite link communication. As shown in Figure 1C, the communication system includes a satellite 106 and a satellite 107, and information and data can be transmitted between the satellite 106 and the satellite 107. Satellites (such as satellite 106 and satellite 107) may include an APT module and a communication module. The APT module of the satellite may be responsible for acquisition, alignment, and tracking between satellites. The communication module of the satellite can be responsible for the transmission of inter-satellite information and is the main body of the inter-satellite communication system.

As shown in FIG. 1D , the communication system may include a wireless screen projection system, and the communication system may include a wireless screen projection device 108 (such as the television shown in FIG. 1D ) and a terminal device 109 . The terminal device 109 can transmit data with the wireless screen projection device.

As shown in Figure 1E, the communication system may be a backhaul link communication system, and the communication system may include an integrated access and backhaul (IAB) parent node 110, an IAB node 111 and a terminal device 112. The link between the IAB parent node 110 and the IAB node 111 is a backhaul link, and the link between the terminal device 112 and the node 111 is an access link.

It should be understood that FIG. 1A, FIG. 1B, FIG. 1C, FIG. 1D, and FIG. 1E are only simplified schematic diagrams for ease of understanding. The communication system may also include other devices, which are not shown in the figures.

The nouns and terminology involved in the embodiments of the present application will be introduced below with reference to FIG. 1A, FIG. 1B, FIG. 1C, FIG. 1D, and FIG. 1E.

(1)Terminal equipment.

The terminal device in the embodiment of the present application (for example, the terminal device shown in Figure 1A, Figure 1B, Figure 1D and Figure 1E) is a device with wireless transceiver function, which can also be called: user equipment (user equipment, UE), mobile station (MS), mobile terminal (MT), access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal , wireless communication equipment, user agent or user device, etc.

The terminal device may be a device that provides voice and/or data connectivity to the user, such as a handheld device, a vehicle-mounted device, etc. with wireless connectivity capabilities. Currently, some examples of terminals are: mobile phones, tablets, laptops, PDAs, mobile internet devices (MID), wearable devices, VR devices, augmented reality (AR) devices , wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, wireless terminals in smart grid, transportation safety ( Wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, sensor terminals, sensing terminals, communication sensing integrated equipment, cellular phones, cordless phones, conversations Session initiation protocol (SIP) telephone, wireless local loop (WLL) station, personal digital assistant (PDA), handheld device with wireless communication capabilities, computing device or connected to a wireless modem Other processing equipment, vehicle-mounted equipment, wearable equipment, terminals in the 5G network or terminals in the future evolved public land mobile communication network (public land mobile network, PLMN), etc. The embodiments of this application use specific methods for the terminals. Technology, equipment form and name are not limited.

As an example and not a limitation, in this application, the terminal device may be a terminal device in an Internet of Things (IoT) system. The Internet of Things is an important part of the future development of information technology. Its main technical feature is to connect objects to the network through communication technology, thereby realizing an intelligent network of human-computer interconnection and object-object interconnection. For example, the terminal device in the embodiment of the present application may be a wearable device. Wearable devices can also be called wearable smart devices. It is a general term for applying wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes, etc. A wearable device is a portable device that can be worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not just hardware devices, but can also achieve powerful functions through software support, data interaction, and cloud interaction. Broadly defined wearable smart devices include full-featured, large-sized devices that can achieve complete or partial functions without relying on smartphones, such as smart watches or smart glasses, and those that only focus on a certain type of application function and need to cooperate with other devices such as smartphones. Use, such as various types of smart bracelets, smart jewelry, etc. for physical sign monitoring.

(2) Network equipment.

The network device in this application may be a device used to communicate with a terminal device (for example, the network device shown in FIGS. 1A to 1E ), or may be a device that connects the terminal device to a wireless network. The network device may be a node in a wireless access network. The network device may be a base station, an evolved base station (evolved NodeB, eNodeB), a transmission reception point (TRP), a home base station (e.g., home evolved NodeB, or home Node B, HNB), Wi-Fi Fi network device (access point, AP), mobile switching center, next generation base station (next generation NodeB, gNB) in 5G mobile communication system, next generation base station in 6G mobile communication system, or base station in future mobile communication system, etc. . The network equipment can also be a module or unit that completes some functions of the base station. For example, it can be a centralized unit (central unit, CU), distributed unit (distributed unit, DU), remote radio unit (RRU) or Baseband unit (BBU), etc. Network equipment can also be equipment that performs base station functions in D2D communication systems, V2X communication systems, M2M communication systems, and IoT communication systems. Network equipment can also be network equipment in NTN, that is, network equipment can be deployed on high-altitude platforms or satellites. The network equipment can be a macro base station, a micro base station or an indoor station, or a relay node or a donor node, etc. Of course, the network device can also be a node in the core network. The embodiments of this application do not limit the specific technology, device form, and name used by the network device.

In the embodiments of the present application, the functions of the network device may also be executed by modules (such as chips) in the network device, or may be executed by a control subsystem that includes the functions of the network device. The control subsystem here containing network equipment functions can be the control center in the application scenarios of the above-mentioned terminals such as smart grid, industrial control, intelligent transportation, smart city, and communication perception integrated system. The functions of the terminal can also be performed by modules in the terminal (such as chips or modems), or by a device containing the terminal functions.

The roles of network devices and terminals can be relative. For example, network device #1 can be configured as a mobile base station. For terminals that access the network through network device #1, network device #1 is a base station; but for a network that communicates with network device #1 through a wireless air interface protocol In the case of device #2, network device #1 is the terminal. Of course, network device #1 and network device #2 may also communicate through an interface protocol between base stations. In this case, relative to network device #2, network device #1 is also a base station.

In this embodiment of the present application, both network equipment and terminal equipment may be collectively referred to as communication equipment or communication devices. For example, a base station can be called a communication device with base station functions, and a terminal can be called a communication device with terminal functions. The network equipment and terminal equipment in this application can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; they can also be deployed on water (such as ships, etc.); they can also be deployed in the air (such as aircraft, balloons and satellites) superior). This application does not limit the application scenarios of network equipment and terminal equipment.

URLLC is one of the three typical services of 5G. Its main application scenarios include: autonomous driving, industrial manufacturing, Internet of Vehicles, smart grid and other fields. These application scenarios put forward more stringent requirements in terms of reliability and latency.

For example, in an industrial manufacturing scenario: the manufacturing equipment of a smart factory is connected to the enterprise cloud or on-site control system through 5G, collecting on-site environmental data and production data, and analyzing production status in real time. Realize the unmanned and wirelessization of the entire production line. Intelligent industrial manufacturing has high requirements on technical performance, and high-end manufacturing has very high demands on the delay and stability of workshop equipment. Specifically, the smart factory industry has put forward very specific performance requirements, such as the communication of a 40-byte data packet in a service area with no more than 50 users and an end-to-end delay of 1ms. Business availability (communication system available, CSA) must be between 99.9999% and 99.999999%. Among them, the definition of CSA is: If the packet received by the receiving end is damaged or not timely (exceeding the maximum allowable end-to-end delay), the service is considered to be unavailable.

In order to meet the requirements for delay and reliability in various scenarios, embodiments of the present application provide a communication method. In this application, the pilot used by the terminal device has an associated relationship with the first parameter, and because the first parameter includes the first terminal The number of network devices in the applicable place of the device, the number of terminal devices in the applicable place of the first terminal device, the density of terminal devices in the applicable place, the size information of the applicable place, the scene type of the applicable place, the channel type corresponding to the applicable place, and data At least one of a transmission rate threshold, a data transmission delay threshold, a data transmission bit error rate threshold, or a data transmission reliability threshold. It can be seen that in the embodiment of the present application, pilots are set according to different scenarios, different business requirements, etc., thereby improving the rationality of pilot settings, and thus improving communication performance.

Before introducing the methods provided in this application, the following points should be made.

First, in the present application, "indication" may include direct indication and indirect indication, and may also include explicit indication and implicit indication. The information indicated by a certain information is called information to be indicated. In the specific implementation process, there may be many ways to indicate the information to be indicated, such as but not limited to, the information to be indicated may be directly indicated, such as indicating the information to be indicated itself or the index of the information to be indicated. The information to be indicated may also be indirectly indicated by indicating other information, wherein the other information has an association with the information to be indicated. It is also possible to indicate only a part of the information to be indicated, while the other parts of the information to be indicated are known or agreed in advance. For example, the indication of specific information may also be achieved by means of the arrangement order of each information agreed in advance (for example, specified by the protocol), thereby reducing the indication overhead to a certain extent.

Second, in the embodiments shown in this article, each term and English abbreviation, such as pilot, number of pilots, etc., are illustrative examples given for convenience of description and should not constitute any limitation on this application. This application does not exclude the possibility of defining other terms that can achieve the same or similar functions in existing or future agreements.

Third, in the embodiments shown below, the first, second and various numerical numbers are only for convenience of description and are not used to limit the scope of the embodiments of the present application. For example, distinguish different information, distinguish different parameters, etc.

Fourth, in the embodiments shown below, "predefinition" can be achieved by pre-saving corresponding codes, tables or other methods that can be used to indicate relevant information in devices (for example, including terminal devices and network devices), This application does not limit its specific implementation.

Fifth, the "protocol" involved in the embodiments of this application may refer to a standard protocol in the communication field, which may include, for example, LTE protocol, NR protocol, and related protocols applied in future communication systems. This application does not limit this.

Based on the embodiments shown in FIG. 1A, FIG. 1B, FIG. 1C, FIG. 1D, and FIG. 1E and the other contents mentioned above, FIG. 2 exemplarily shows a possible flow diagram of a communication method applicable to the embodiment of the present application. The embodiments of the present application are applicable to communication between a first communication device and a second communication device. The first communication device may be a terminal device or a network device. The second communication device may be a terminal device or a network device. This application is applicable to communication between terminal devices, communication between terminal devices and network devices, and communication between network devices. This application does not limit this. As shown below, in FIG. 2 , the first terminal device and the first network device are used as the execution subjects of the interaction gesture as an example to illustrate the method. However, this application does not limit the execution subjects of the interaction gesture. For example, the first terminal device in FIG. 2 may be a terminal device, a unit, a module or a chip system inside the terminal device. The first network device may be a network device, a unit, a module or a chip inside the network device.

The first terminal device involved in the embodiment of this application may be the terminal device 102 in FIG. 1A , or a unit, module or chip inside the terminal device 102 . The first network device involved in the embodiment of this application may be the network device 101 in FIG. 1A , or a unit, module or chip inside the network device 101 .

The first terminal device involved in the embodiment of the present application may be the terminal device 104 in FIG. 1B , or a unit, module or chip inside the terminal device 104 ; the first network device involved in the embodiment of the present application may be the terminal device 104 in FIG. 1B satellite 103, or a unit, module or chip inside the satellite 103. The first terminal device involved in the embodiment of the present application may be the satellite 103 in Figure 1B, or a unit, module or chip inside the satellite 103; the first network device involved in the embodiment of the present application may be the base station in Figure 1B 105, or a unit, module or chip inside the base station 105.

The first terminal device involved in the embodiment of the present application may be the satellite 106 in FIG. 1C , or a unit, module or chip inside the satellite 106 . The first network device involved in the embodiment of the present application may be the satellite 107 in FIG. 1C , or a unit, module or chip inside the satellite 107 .

The first terminal device involved in the embodiment of this application may be the terminal device 109 in FIG. 1D, or a unit, module or chip inside the terminal device 109. The first network device involved in the embodiment of this application may be the wireless screen projection device 108 in FIG. 1D, or a unit, module or chip inside the wireless screen projection device 108.

The first terminal device involved in the embodiment of the present application may be the satellite 106 in FIG. 1E , or a unit, module or chip inside the satellite 106 . The first network device involved in the embodiment of the present application may be the satellite 107 in FIG. 1E , or a unit, module or chip inside the satellite 107 .

As shown in Figure 2, the method includes:

Step 201: The first terminal device obtains a pilot.

It should be understood that the pilot is also called a reference signal or a training sequence, which is a known signal to both the transmitting end device (second communication device) and the receiving end device (first communication device).

In this embodiment of the present application, the pilot has an associated relationship with the first parameter. The first parameter includes the number of network devices in the applicable place for the first terminal device, the number of terminal devices in the applicable place for the first terminal device, the density of terminal devices in the applicable place, size information of the applicable place, scene type of the applicable place, and applicable At least one of the channel type, data transmission rate threshold, data transmission delay threshold, data transmission bit error rate threshold, or data transmission reliability threshold corresponding to the location.

In the embodiment of this application, the applicable place of the first terminal device refers to a place where the first terminal device is located, or is called an area. Dimensional information for the applicable site may include the area of the applicable site. Scene types in the embodiments of this application may include indoor scenes, outdoor scenes, dense urban scenes, sparse urban scenes, suburban scenes, factory scenes, etc. The channel types in the embodiments of this application may include the following types, such as a tapped delay line model (Tapped Delay Line, TDL), which may include TDL-A, TDL-B, and TDL-C for non-line of sight (non line of sight) of sight, NLOS) channel model, and two channel models for line of sight (LOS), TDL-D and TDL-E. The clustered delay line model (Clustered Delay Line, CDL) includes three channel models CDL-A, CDL-B, and CDL-C for NLOS, and two channel models CDL-D and CDL-E for LOS. Optionally, the association between the pilot and the first parameter may be predefined by the protocol, or may be informed by the network device to the terminal device through signaling, or multiple associations may be predefined by the protocol. , the network device notifies the terminal device of one of the associations used through signaling.

In a possible implementation, the pilot is a pilot among the pilots included in the first pilot set. The first pilot set may include one or more pilots. The first pilot set has an associated relationship with the first parameter. Compared with the solution in which the pilot directly establishes an association relationship with the first parameter, this solution can simplify the association relationship. The first terminal device can determine the first pilot set to be used based on the first parameter, and then use the first pilot set communicate via pilots.

For example, the first terminal device may negotiate with other terminal devices to determine the pilot used by the first terminal device, or the first terminal device may determine the pilot used by the first terminal device based on information indicating the pilot from its own network device. pilot, or the first terminal device can determine the pilot used by the first terminal device according to the pilot allocation information associated with the first pilot set, and the pilot allocation information indicates the terminal device corresponding to the pilot in the first pilot set. logo. The pilot allocation information may be included in the first pilot feature information associated with the subsequent first pilot set, or may be set independently from the first pilot feature information.

Optionally, the association between the first pilot set and the first parameter may be predefined by the protocol, or may be informed by the network device to the terminal device through signaling, or may be predefined by the protocol. The network device notifies the terminal device of one of the associations used through signaling.

In the above-mentioned step 201, there are multiple implementation ways for the first terminal device to obtain the pilot, such as the following possible implementations A1 and A2.

Embodiment A1: The first network device may send information indicating the pilot to the first terminal device.

In embodiment A1, the first terminal device may receive information indicating the pilot from the first network device, and then determine the pilot based on the information indicating the pilot. In this way, the first terminal device can save the step of searching for pilots from the first pilot set, thereby reducing the workload of the first terminal device and reducing the power consumption of the first terminal device.

Embodiment A2: The first terminal device may determine the first pilot set, and then determine the pilot from the first pilot set.

In embodiment A2, the first pilot set may include one or more pilots. The first terminal device may interact with other terminal devices and then allocate pilots in the first pilot set to each terminal device.

In the above embodiment A2, there are multiple ways for the first terminal device to determine the first pilot set. For example, in the following possible embodiment A2-b1, the first terminal device obtains the first pilot characteristic information, and the first pilot set is determined by the first terminal device. The frequency characteristic information has an associated relationship with the first pilot set. The first terminal device then determines the first pilot set according to the first pilot characteristic information. For another example, in the following possible implementation A2-b2, the first network device sends information indicating the first pilot set to the first terminal device. They are introduced separately below.

In embodiment A2-b1, the first terminal device may obtain the first pilot characteristic information, and then determine the first pilot set according to the first pilot characteristic information.

The first pilot characteristic information has a correlation relationship with the first parameter. The first pilot characteristic information includes: at least one of density, number or length of pilots in the first pilot set. Compared with the solution in which the pilot directly establishes an association relationship with the first parameter, this solution can simplify the association relationship. The first terminal device can determine the pilot characteristic information (such as the first pilot characteristic) of the pilot to be used based on the first parameter. information), and then the pilot can be obtained according to the first pilot characteristic information. For example, the first terminal device can generate a pilot that conforms to the pilot characteristic information according to the first pilot characteristic information. For example, the first terminal device can interact with other terminal devices so that the pilots assigned to the terminal devices in the area correspond to The pilot characteristic information meets the requirements of the first pilot characteristic information. For another example, the first terminal device determines the first pilot set based on the association between the first pilot characteristic information and the first pilot set, and then communicates based on the pilots in the first pilot set. In another possible implementation, the first pilot characteristic information also includes pilot allocation information, and the pilot allocation information indicates the allocation mode of each pilot in the terminal device. For example, the pilot allocation information indicates the pilot allocation information in the first pilot set. The identification of the terminal device to which the pilot is allocated.

The first terminal device may generate the first pilot set according to the first pilot characteristic information. Or the first terminal device pre-configures the association between the first pilot set and the first pilot feature information. After obtaining the first pilot feature information, the first terminal device determines the first pilot set based on the first pilot feature information. . Alternatively, the first terminal device may obtain the association between the first pilot set and the first pilot characteristic information from other devices. After obtaining the first pilot characteristic information, the first terminal device determines the first pilot characteristic information based on the first pilot characteristic information. First pilot set.

In a possible implementation, the first pilot feature information is one candidate pilot feature information among multiple candidate pilot feature information. The candidate pilot feature information includes first candidate pilot feature information and second candidate pilot feature information; the first candidate pilot feature information includes at least one of pilot density, pilot number, or pilot length. . The second candidate pilot feature information includes at least one of pilot density, pilot number, or pilot length. At least one of the density of pilots, the number of pilots, or the length of pilots in the first candidate pilot feature information and the second candidate pilot feature information are different. It can be seen that in the embodiment of the present application, multiple candidate pilot feature information can be preset, and two different candidate pilot feature information can be associated with different first parameters. In this way, the first terminal device can determine the specific value of the first parameter according to the specific value of the first parameter. Candidate pilot feature information matching the first parameter is selected, thereby improving the applicability of the solution.

The multiple candidate pilot feature information in the embodiment of the present application may be determined by the first terminal device, or predefined by the protocol, or determined for the first network device. In a possible implementation, the first network device may send information indicating multiple candidate pilot feature information to the first terminal device. Correspondingly, the first terminal device receives information indicating multiple candidate pilot feature information from the first network device. In this way, the flexibility of the solution can be improved.

In implementation A2-b1, there are multiple implementations for the first terminal device to determine the first pilot characteristic information. Several possibilities are illustrated below through implementation A2-b1-1 and implementation A2-b1-2. implementation.

In implementation mode A2-b1-1, the first network device sends first pilot characteristic information to the first terminal apparatus.

In implementation A2-b1-1, in a possible implementation, the first network device determines the first parameter, and the first network device determines the first parameter based on the first parameter and the correlation between the first parameter and the first pilot feature information. , determine the first pilot characteristic information. Then the first network device sends the first pilot characteristic information to the first terminal device.

The correlation between the first parameter and the first pilot characteristic information is predefined by the protocol or configured by the first network device.

In implementation mode A2-b1-2, the first terminal device determines first pilot characteristic information according to the first parameter.

In embodiment A2-b1-2, the first terminal device determines the first pilot feature information based on the first parameter and the correlation between the first parameter and the first pilot feature information.

Optionally, the association between the first parameter and the first pilot characteristic information may be predefined by the protocol, or may be informed by the network device to the terminal device through signaling, or may be predefined by the protocol. Multiple associations, the network device notifies the terminal device of one of the associations used through signaling.

For example, the first network device sends information indicating the correlation between the first parameter and the first pilot characteristic information to the first terminal device. Correspondingly, the first terminal device receives information indicating the correlation between the first parameter and the first pilot characteristic information from the first network device. In this way, the first terminal device can find the first pilot characteristic information based on the correlation between the received first parameter and the first pilot characteristic information and in combination with the first parameter. That is to say, the first terminal device can find the first pilot characteristic information by searching for the correlation relationship based on the actually obtained first parameter, thereby reducing the signaling interaction process with the network device and reducing power consumption.

Optionally, the association relationship between the first parameter and the first pilot characteristic information is a plurality of association relationships predefined by a protocol, and the first network device informs the first terminal device of at least one of the plurality of association relationships through signaling.

Table 1 is used below to illustrate an example of an association relationship between a first parameter and first pilot characteristic information. As shown in Table 1, the first parameter includes the number of terminal devices in the applicable location of the first terminal device. The first pilot characteristic information includes the number of pilots in the first pilot set. The association relationship between the first parameter and the first pilot characteristic information can be at least one row in Table 1.

Table 1 Example of the correlation between the first parameter and the first pilot feature information

Figure 4A exemplarily shows a schematic diagram of the average access probability of the scheme provided by the embodiment of the present application, the orthogonal pilot scheme and the Dsatur scheme. In the embodiment of this application, Dsatur is the abbreviation of degree of saturation, and dsatur is a graph coloring algorithm. Figure 4B exemplarily shows a schematic diagram of the number of pilots corresponding to the scheme provided by the embodiment of the present application, the orthogonal pilot scheme and the Dsatur scheme.

It can be seen from Figure 4A that under the same number of devices, the average access probability of the scheme provided by the embodiment of the present application is greater than the average access probability corresponding to the orthogonal pilot scheme. The average access probability of the scheme provided by the embodiment of the present application is The probability is greater than the rating access probability corresponding to the Dsatur scheme. It can be seen from Figure 4B that under the same number of devices, the average number of pilots of the solution provided by the embodiment of the present application is less than the average number of pilots corresponding to the orthogonal pilot solution.

Under the same first parameter in the embodiment of the present application, the average access probability of the scheme provided in the embodiment of the present application is greater than the average access probability corresponding to the orthogonal pilot scheme, and the average access probability of the scheme provided in the embodiment of the present application is greater than the rating access probability corresponding to the Dsatur scheme. It can be seen from Figure 4B that under the same first parameter, the average number of pilots of the scheme provided in the embodiment of the present application is less than the average number of pilots corresponding to the orthogonal pilot scheme. When the first parameter is other content, the simulation performance is similar to Figures 4A and 4B, and will not be repeated.

Table 2 and Table 3 illustrate an example of the correlation between the first parameter and the first pilot feature information. As shown in Table 2, the first parameter includes the density of terminal devices in the applicable location of the first terminal device. As shown in Table 3, the first parameter includes size information of the applicable place of the first terminal device (for example, the area of the applicable place of the first terminal device). The first pilot characteristic information includes the number of pilots in the first pilot set.

Optionally, the association relationship between the first parameter and the first pilot characteristic information may be at least one row in Table 2.

Table 2 Example of the correlation between the first parameter and the first pilot feature information

Optionally, the association between the first parameter and the first pilot characteristic information may be at least one row in Table 3.

Table 3 Example of the correlation between the first parameter and the first pilot feature information

Table 4 and Table 5 illustrate an example of the correlation between the first parameter and the first pilot feature information. As shown in Table 4, the first parameter includes a data transmission bit error rate threshold. As shown in Table 5, the first parameter includes a data transmission reliability threshold. The first pilot characteristic information includes the number of pilots in the first pilot set.

Among them, the bit error rate (symbol error rate, SER) is an indicator that measures the accuracy of data transmission within a specified time. The bit error rate = bit errors in transmission / total number of bits transmitted * 100%. If there are bit errors, there is a bit error rate. In addition, the bit error rate is also defined as a measure of the frequency of bit errors.

Alternatively, the bit error rate can also refer to the block error rate (block error rate) which is the ratio of the number of blocks incorrectly received to the total number of blocks sent.

Alternatively, the bit error rate may also refer to bit error rate, bit error rate, bit error probability, etc.

Optionally, the association between the first parameter and the first pilot characteristic information may be at least one row in Table 4.

Table 4 Example of the correlation between the first parameter and the first pilot feature information

Optionally, the association between the first parameter and the first pilot characteristic information may be at least one row in Table 5.

Table 5 Example of the correlation between the first parameter and the first pilot feature information

Table 6 is used below to illustrate an example of an association relationship between a first parameter and first pilot characteristic information. As shown in Table 6, the first parameter includes a data transmission rate threshold. The first pilot characteristic information includes the number of pilots in the first pilot set. The association relationship between the first parameter and the first pilot characteristic information may be at least one row in Table 6.

Table 6 Example of the correlation between the first parameter and the first pilot feature information

In a possible implementation, the first parameter is associated with a plurality of pilot feature information, for example, the first parameter is also associated with other pilot feature information (such as pilot feature information a). In this way, the first network device can determine which association relationship is used this time based on some parameters. For example, the first network device determines the first parameter and the first pilot feature used this time based on the scene type, user category or channel status of the applicable place. If the first network device determines the correlation between the information, the first network device may send the correlation between the first parameter and the first pilot feature information to the first terminal device. For example, an association relationship can correspond to one or more scene types, and scene types can include, for example, small factories or medium-sized factories. For another example, an association relationship may correspond to one or more user categories, and the user categories may include, for example, industrial equipment or commercial equipment. For another example, an association relationship can correspond to one or more channel states. The user category may refer to the terminal type.

Optionally, when determining the terminal type corresponding to the terminal equipment, the terminal type corresponding to the terminal equipment may be determined based on one or more of the following factors: service type, mobility, transmission delay requirements, channel environment, reliability Requirements, coverage requirements, and communication scenarios.

The service type can be determined according to the size of the service data. For example, the service type can include large packet data, medium packet data, small packet data, etc. Mobility can include movement and fixation; movement can also include irregular movement, movement along fixed routes, ultra-short distance movement, etc. Transmission delay requirements can include high transmission delay, low transmission delay, average transmission delay, etc. The channel environment may include a changeable channel environment, a stable channel environment, a relatively stable channel environment, etc. Reliability requirements can include high reliability, low reliability, average reliability, etc. Coverage requirements can include wide coverage, strong coverage, weak coverage, general coverage, deep coverage, etc. The communication scenario may include the communication scenarios included in the aforementioned description of the communication system, or the communication scenario may also include uplink communication, downlink communication, uplink and downlink communication, side link communication, backhaul communication, access communication, relay communication, Satellite communications, terahertz communications, optical communications, green communications, etc. are not restricted.

As an example, terminal types include eMBB devices, URLLC devices, NB-IoT devices, and CPE devices. Among them, eMBB devices are mainly used to transmit large packet data, and can also be used to transmit small packet data. They are generally in a mobile state. For The transmission delay and reliability requirements are general, both for uplink and downlink communications, and the channel environment is relatively complex and changeable. It can communicate indoors or outdoors. For example, the eMBB device can be a mobile phone. URLLC equipment is generally used to transmit small packet data, and can also transmit medium and large packet data. It has high requirements for transmission delay and reliability, that is, low transmission delay and high reliability, both uplink and downlink communication, and a stable channel environment. For example, the URLLC device may be a factory device. NB-IoT devices are mainly used to transmit small data. They are generally in a non-mobile state and have a known location. They have medium transmission delay and reliability requirements, a lot of uplink communication, and a relatively stable channel environment. For example, NB-IoT devices can be Smart water meters and sensors. CPE equipment is mainly used to transmit large packets of data. It is generally in a non-mobile state or can move ultra-short distances. It has medium requirements for transmission delay and reliability. It has both uplink and downlink communications and the channel environment is relatively stable. For example, CPE equipment It can be terminal equipment, AR, VR, etc. in smart homes. When determining the terminal type of the terminal equipment, the terminal type corresponding to the terminal equipment can be determined as eMBB equipment, URLLC equipment, according to the service type, mobility, transmission delay requirements, reliability requirements, channel environment and communication scenarios of the terminal equipment. NB-IoT device or CPE device.

eMBB equipment can also be described as eMBB, URLLC equipment can also be described as URLLC, NB-IoT equipment can also be described as NB-IoT, CPE equipment can also be described as CPE, and V2X equipment can also be described as V2X, without limitation.

For example, Table 7 illustrates yet another example of the correlation between the first parameter and the first pilot feature information. As shown in Table 7, the first parameter includes the number of terminal devices in the applicable location of the first terminal device. The first pilot characteristic information includes the number of pilots in the first pilot set. The correlation between the first parameter and the first pilot characteristic information may be at least one row in Table 7.

Table 7 Example of the correlation between the first parameter and the first pilot feature information

Taking Table 1 and Table 7 as an example, the first network device may choose to use the correlation between the first parameter and the first pilot characteristic information shown in Table 1, or choose to use the first parameter and the first pilot characteristic information shown in Table 7. The association relationship of the pilot characteristic information, for example, Table 1 can be associated with at least one of the scenario type, user category or channel status, Table 7 can be associated with at least one of the scenario type, user category or channel status, the first network The device may select an association relationship between the first parameter and the first pilot characteristic information (Table 1 or Table 7) based on at least one of the scenario type, user category, or channel status.

In implementation manner A2-b2, the first network device sends information indicating the first pilot set to the first terminal device.

In implementation manner A2-b2, there are multiple ways for the first network device to send the first pilot set to the first terminal device. For example, the first network device sends pilot indication information to the first terminal device. The pilot indication information indicates the first pilot set. Correspondingly, the first terminal device receives pilot indication information from the first network device. The first terminal device determines the first pilot set according to the pilot indication information. In this way, the first terminal device can determine which pilot in the pilot set to use based on the pilot indication information. This solution can reduce the workload of the first terminal device and reduce the power consumption of the first terminal device.

In an embodiment of the present application, multiple pilot sets can be preset. The first pilot set is a pilot set among the multiple pilot sets. The pilot indication information may be a sequence identifier indicating all pilots in the first pilot set. In another possible implementation, in order to reduce the amount of data transmission, the pilot indication information indicates some of the pilots in the first pilot set, for example, the pilot indication information is: the sequence identifier of each pilot in some of the pilots in the first pilot set. In this way, the first terminal device can determine the first pilot set based on the sequence identifier of the pilot in some of the pilots. It can be seen that this method can reduce the amount of data transmitted, thereby saving signaling overhead and improving data transmission efficiency.

In a possible implementation, the number of bits occupied by the pilot indication information has a correlation with the first parameter. For example, the first network device determines the first parameter, and the first network device determines the number of bits occupied by the pilot indication information based on the correlation between the number of bits occupied by the pilot indication information and the first parameter. The first network device sends the pilot indication information according to the number of bits occupied by the pilot indication information. In this way, the number of bits occupied by the pilot indication information can be flexibly changed according to the specific value of the first parameter, thereby further improving the flexibility of the solution. For example, when the number of pilots in the first pilot set associated with the first parameter is relatively large, the number of bits occupied by the pilot indication information may be larger. For another example, the number of pilots in the first pilot set associated with the first parameter is relatively large. When the number is small, the number of bits occupied by the pilot indication information can be smaller. In this way, on the premise that the pilot indication information can indicate the first pilot set, the number of bits occupied by the pilot indication information can be reduced, thereby reducing the amount of data to be transmitted and reducing the delay.

Optionally, the number of bits occupied by the pilot indication information has an association relationship with the first parameter. The association relationship may be predefined by the protocol, or it may be informed by the network device to the terminal device through signaling, or it may also be the protocol. Multiple associations are predefined, and the network device notifies the terminal device of one of the associations to be used through signaling.

The first terminal device determines the first parameter, and the first terminal device determines the number of bits occupied by the pilot indication information based on the correlation between the number of bits occupied by the pilot indication information and the first parameter. The first terminal device obtains the pilot indication information from a preset position of the message carrying the pilot indication information according to the number of bits occupied by the pilot indication information, and the first terminal device determines the first pilot set according to the pilot indication information. The correlation between the number of bits occupied by the pilot indication information and the first parameter may be preset, or may be sent by the first network device to the first terminal device.

For example, the pilot indication information occupies 3 bits and can indicate the first 8 pilots in the pilot set (the number of pilots included in the pilot set is greater than 8). For another example, the pilot indication information occupies 4 bits and can indicate the first 16 pilots in the pilot set (the number of pilots included in the pilot set is greater than 16). It can be seen that in this embodiment, a subset can be used to indicate a set, thereby saving signaling overhead.

Table 8 illustrates an example of the correlation between the first parameter and the number of bits occupied by the pilot indication information. As shown in Table 8, the first parameter includes the number of terminal devices in the applicable location of the first terminal device. The correlation between the first parameter and the number of bits occupied by the pilot indication information may be at least one row in Table 8.

Table 8 Example of the correlation between the first parameter and the number of bits occupied by the pilot indication information

Table 9 illustrates an example of the correlation between the first parameter and the number of bits occupied by the pilot indication information. As shown in Table 9, the first parameter includes size information of the applicable location of the first terminal device. The correlation between the first parameter and the number of bits occupied by the pilot indication information may be at least one row in Table 9.

Table 9 Example of the association between the first parameter and the number of bits occupied by the pilot indication information

Table 10 illustrates an example of the correlation between the first parameter and the number of bits occupied by the pilot indication information. As shown in Table 10, the first parameter includes a data transmission bit error rate threshold. The correlation between the first parameter and the number of bits occupied by the pilot indication information may be at least one row in Table 10.

Table 10 Example of the correlation between the first parameter and the number of bits occupied by the pilot indication information

Table 11 illustrates an example of the correlation between the first parameter and the number of bits occupied by the pilot indication information. As shown in Table 11, the first parameter includes a data transmission rate threshold. The correlation between the first parameter and the number of bits occupied by the pilot indication information may be at least one row in Table 11.

Table 11 Example of the correlation between the first parameter and the number of bits occupied by the pilot indication information

In a possible implementation, the first parameter has a correlation relationship with the number of bits occupied by multiple pilot indication information. The first network device can determine which association to use this time based on some parameters.

For example, Table 12 below illustrates yet another example of the correlation between the first parameter and the number of bits occupied by the pilot indication information. As shown in Table 12, the first parameter includes the number of terminal devices in the applicable location of the first terminal device. The correlation between the first parameter and the number of bits occupied by the pilot indication information may be at least one row in Table 12.

Table 12 Example of the correlation between the first parameter and the number of bits occupied by the pilot indication information

Taking Table 8 and Table 12 as an example, the first network device may choose to use the correlation between the first parameter and the number of bits occupied by the pilot indication information shown in Table 8, or choose to use the first parameter and the number of bits occupied by the pilot indication information shown in Table 12. The correlation relationship between the number of bits occupied by the pilot indication information. For example, Table 8 can be associated with at least one of the type of scenario, the scenario type of the applicable location, the user category or the channel status. Table 12 can also be associated with the type of scenario, the type of the applicable location. For at least one of scenario type, user category or channel status, the first network device can determine and select one (Table 8 or Table 12) first parameter based on the scenario type, scene type of the applicable location, user category or channel status, etc. and the relationship between the number of bits occupied by the pilot indication information.

Step 202: The first network device obtains a pilot.

The pilot has an associated relationship with the first parameter, and the first parameter includes the number of network devices in the applicable location of the first terminal device, the number of terminal devices in the applicable location of the first terminal device, the density of terminal devices in the applicable location, and the number of terminal devices in the applicable location. At least one of the size information, the scene type of the applicable place, the channel type corresponding to the applicable place, the data transmission rate threshold, the data transmission delay threshold, the data transmission bit error rate threshold, or the data transmission reliability threshold.

In a possible implementation manner, the pilot is a pilot in the pilots included in the first pilot set. The first pilot set may include one or more pilots. The first pilot set is associated with the first parameter.

The implementation manner in which the first network device obtains the pilot is similar to the manner in which the first terminal device obtains the pilot in the aforementioned step 201. For example, the first network device may receive information indicating the pilot from the first terminal device. Alternatively, the first network device may determine the first pilot set, and then determine the pilot from the first pilot set.

Similarly, there are many ways for the first network device to determine the first pilot set. For example, the first network device obtains the first pilot feature information, and the first pilot feature information is associated with the first pilot set. The first network device determines the first pilot set according to the first pilot characteristic information. For another example, the first network device receives information indicating the first pilot set from the first terminal device.

The first network device and the first terminal device may obtain the first pilot characteristic information, and then determine the first pilot set based on the first pilot characteristic information. Refer to the aforementioned implementation mode A2-b1. For example, the first pilot characteristic information has a correlation relationship with the first parameter. The first network device may generate the first pilot set according to the first pilot characteristic information. Or the first network device pre-configures the association between the first pilot set and the first pilot feature information. After obtaining the first pilot feature information, the first network device determines the first pilot set based on the first pilot feature information. . Alternatively, the first network device may obtain the association between the first pilot set and the first pilot characteristic information from other devices. After obtaining the first pilot characteristic information, the first network device determines the first pilot characteristic information based on the first pilot characteristic information. First pilot set.

Similarly, the first pilot feature information is one candidate pilot feature information among multiple candidate pilot feature information. In a possible implementation, the first network device may receive information indicating multiple candidate pilot feature information from the first terminal device.

The implementation of the first network device determining the first pilot characteristic information may refer to the aforementioned embodiment A2-b1. For example, the first network device may receive information indicating the first pilot characteristic information from the first terminal device. For example, the first terminal device may determine the first parameter, and the first terminal device determines the first pilot feature information based on the first parameter and the correlation between the first parameter and the first pilot feature information. Then the first terminal device sends information indicating the first pilot characteristic information to the first network device.

For another example, the first network device may determine the first pilot characteristic information according to the first parameter. The association between the first parameter and the first pilot characteristic information is predefined by the protocol, or configured by the first network device, or may be sent by the first terminal device to the first network device.

For another example, the first network device may receive information indicating the first pilot set from the first terminal device. For example, the first network device may receive pilot indication information from the first terminal device. For relevant content of the pilot indication information, please refer to the foregoing embodiment A2-b2, which will not be described again.

The implementation manner in which the first network device obtains the pilot is similar to the manner in which the first terminal device obtains the pilot in step 201, and will not be described again.

Step 203: The first terminal device communicates with the first network device according to the pilot.

In this application, the pilot used by the terminal device is related to the first parameter, and because the first parameter includes the number of network devices in the applicable location of the first terminal device, the number of terminal devices in the applicable location of the first terminal device, the number of terminal devices in the applicable location, The density of terminal devices, the size information of the applicable place, the scene type of the applicable place, the channel type corresponding to the applicable place, the data transmission rate threshold, the data transmission delay threshold, the data transmission bit error rate threshold, or the data transmission reliability threshold at least one of. It can be seen that in the embodiment of the present application, pilots are set according to different scenarios, different business requirements, etc., thereby improving the rationality of pilot settings, and thus improving communication performance.

In the embodiment of the present application, the association relationship between the first parameter and the first pilot characteristic information can be calculated by a network device (such as a first network device), or can be calculated by a terminal device (such as a first terminal device), or can be executed by other devices. In the embodiment of the present application, the scheme for establishing the association relationship between the first parameter and the first pilot characteristic information can be used in combination with the scheme shown in Figure 2 above, or can be implemented separately. For example, in one possible implementation, before the implementation of the implementation of Figure 2 above, the association relationship between the first parameter and the first pilot characteristic information can be generated by the implementation provided in the embodiment of the present application. The following is an exemplary introduction through implementation C1 and implementation C2 respectively.

In implementation mode C1, the first network device establishes an association between the first parameter and the first pilot characteristic information.

Optionally, the association between the first parameter and the first pilot characteristic information may be predefined by the protocol, or may be informed by the network device to the terminal device through signaling, or may be predefined by the protocol. Multiple associations, the network device notifies the terminal device of one of the associations used through signaling.

In embodiment C1, the first pilot characteristic information may include pilot information of the pilot corresponding to the first parameter (such as the number of pilots), and the first pilot characteristic information may also include pilot allocation information.

Based on the embodiments shown in FIG. 1A, FIG. 1B, FIG. 1C, FIG. 1D, FIG. 1E, and FIG. 2 and other contents mentioned above, FIG. 3 exemplarily shows a flow chart of a communication method provided by an embodiment of the present application. This solution is used to establish an association between the first parameter and the first pilot characteristic information. In practical applications, the implementation shown in Figure 3 can be executed by a terminal device, a network device, or other devices. In an example of the embodiment of the present application, the first device executes the solution shown in Figure 3 as an example. The first device in the embodiment of the present application may be a network device, a terminal device, or other devices. In implementation mode C1, since the first network device establishes an association between the first parameter and the first pilot characteristic information, the steps in FIG. 3 are introduced by taking the execution subject of the solution as the first network device as an example.

As shown in Figure 3, methods include:

Step 301: The first network device obtains channel state information between one or more terminal devices and one or more network devices.

In step 301, for example, the first network device sends a reference signal to the first terminal device. Correspondingly, the first terminal device receives the reference signal. The transmitting end device transmits a reference signal known to the receiving end device, and the reference signal is received by the receiving end device after propagating through the channel. The receiving device estimates the channel by comparing the received reference signal with a known reference signal.

Among them, the reference signal may include but is not limited to sounding reference signal (SRS), channel state information reference signal (channel state information reference signal, CSI-RS), perception reference signal and other reference signals.

It should be understood that the reference signal is used to measure the channel between the first network device and the first terminal device, and obtain channel state information required for scheduling and link adaptation, such as precoding matrix, channel quality information, etc. It should also be understood that the channel state information in the embodiments of the present application includes large-scale information.

Alternatively, the network device may receive a reference signal from the terminal device, and determine channel state information between the network device and each terminal device based on the reference signal from the terminal device. The channel state information may be large-scale information, for example.

For example, the first network device sends a reference signal, and the reference signal is used to determine channel state information between the first network device and a terminal device among the plurality of terminal devices. The first terminal device receives a reference signal from a first network device among one or more network devices, and the first terminal device determines channel state information with the first network device according to the reference signal. The first terminal device sends channel state information between the first terminal device and the first network device to the first network device. The first network device receives channel state information between the first terminal device and the first network device from the first terminal device.

Similarly, other terminal devices can also send reference signals to the first network device, and obtain channel state information between them and the first network device based on the reference signals. Network devices may also interact with each other. For example, a first network device may receive channel state information between the network device and one or more terminal devices from other network devices. Through this solution, the first network device obtains channel state information between one or more terminal devices and one or more network devices.

In a possible implementation, the first network device sends reporting instruction information to the first terminal device. Correspondingly, the first terminal device receives the reporting instruction information from the first network device. The reporting indication information can be carried in scheduling information (such as downlink control information (DCI)) or radio resource control (radio resource control, RRC) messages.

The reporting indication information indicates that the first terminal device periodically sends the channel state information between the first terminal device and the first network device. The reporting indication information also includes: the periodic duration of the channel state information between the first terminal device and the first network device, the resource information of the channel state information between the first terminal device and the first network device, the resource information of the channel state information between the first terminal device and the first network device received by the first network device, the number of bits occupied by the channel state information between the first terminal device and the first network device sent by the first terminal device, or at least one of the number of bits occupied by the channel state information between the first terminal device and the first network device received by the first receiving point. In this way, the first network device can report the channel state information according to the reporting indication information.

In another possible implementation, when the amount of change in the channel state information between the first terminal device and the first network device is greater than a preset threshold value for the amount of change in the channel state information, the first terminal device sends updated channel state information between the first terminal device and the first network device to the first network device. The first network device receives the updated channel state information between the first terminal device and the first network device from the first terminal device. The updated channel state information between the first terminal device and the first network device is sent by the first terminal device when the amount of change in the channel state information between the first terminal device and the first network device is greater than a preset threshold value for the amount of change in the channel state information. In this way, the first network device can communicate based on the latest channel state information.

In the embodiment of the present application, the channel state information change threshold is preset, or is indicated by information indicating the channel state information change threshold from the first network device. In a possible implementation, the channel state information change threshold has a correlation relationship with the first parameter. For example, two channel state information change thresholds associated with two different first parameters are different. For example, the change thresholds of two channel state information corresponding to different scenarios can be different. Another example is that the change thresholds of two channel state information corresponding to different rates can be different. Another example is that the two channels corresponding to different bit error rates can be different. The status information change thresholds can be different. Setting different thresholds can meet the needs of channel state information under different scene conditions and can also reduce the overhead of feedback signaling.

Step 302: The first network device determines the second pilot characteristic information associated with the first parameter according to the channel state information.

The second pilot characteristic information includes pilot quantity and pilot allocation information. The pilot allocation information indicates how the number of pilots is allocated among the plurality of terminal devices. For the relevant information about the first parameter, please refer to the previous introduction and will not be described again. In step 302, the first network device may determine the second pilot characteristic information based on the Dsatur algorithm or based on the orthogonal pilot allocation scheme.

The pilot allocation information determined based on the orthogonal pilot allocation scheme may indicate that one pilot is allocated to each terminal device. For example, if there are K terminal devices in total, the second pilot characteristic information indicates that K pilots are required, any two pilots are different, and K is a positive integer.

The pilot allocation information in the second pilot characteristic information determined based on the Dsatur algorithm may indicate that there is a terminal device that multiplexes one pilot. The second pilot characteristic information indicates that there are at least two terminals, and at least two terminals multiplex one pilot. This can reduce the number of pilots.

Step 303: The first network device determines a first number of terminal devices that meet a preset rate requirement value based on the second pilot characteristic information.

Step 304: When the first number is less than the preset user number threshold, the first network device updates the second pilot feature information associated with the first parameter to obtain the first pilot feature information associated with the first parameter.

In the above step 304, in a possible implementation, when the first number is less than the preset user number threshold, the number of pilots indicated by the second pilot characteristic information is increased to obtain the first pilot characteristic information.

For example, when the first number is less than the preset user number threshold, for the first terminal device that does not meet the rate requirement value, the second pilot characteristic information indicates that the first terminal device and the second terminal device reuse the same pilot. . A first requirement is set, and the first requirement indicates that the first terminal device and the second terminal device cannot reuse the same pilot. One or more iterations are performed according to the first requirement until a preset iteration stop condition is met, and first pilot feature information associated with the first parameter is obtained.

In a possible implementation, the second pilot characteristic information indicates that the first terminal device multiplexes the first pilot with multiple third terminal devices. The second terminal device is the third terminal device that is physically closest to the first terminal device among the plurality of third terminal devices.

In step 304, the first network device may go through multiple iterations and finally obtain the first pilot feature information associated with the first parameter. The preset iteration stop condition includes at least one of the following: the number of terminal devices that meet the preset rate demand value is not less than the preset user number threshold (the preset user number threshold can be, for example, the first terminal device in the applicable location the number of all terminal devices included); the difference between the current number of pilots and the initial value of the number of pilots is greater than a preset value; or the number of iterations is greater than the preset number of iterations.

Taking the following as an example of a smart factory including K single-antenna terminal devices and M network devices, the first parameter may include, for example, the number K of terminal devices and/or the number M of network devices. A possible example of determining the first pilot characteristic information associated with the first parameter is introduced below through an example. The pilot allocation scheme method provided by the embodiment of this application is described in detail. The method may include steps 1 to 6. The meanings of various parameters involved in steps 1 to 6 below may be referred to each other and will not be described again.

The following is a detailed introduction to each step of the method.

Step 1: The terminal device k selects the network device set to be connected to it according to the large-scale channel ratio

的选择准则为：对任意第k个终端装置，将大尺度信息{β _m,k} _{m＝1,2,…,M}由大到小排列并逐个加入集合

直到：

成立，其中，T _h∈(0,1]，T _h为系统设定的阈值，β _m,k为第k个终端装置到第m个网络装置的大尺度信道增益。应理解，阈值越大表示服务终端装置k(第k个终端装置)的网络装置数目越多。 Optionally, the network device set

The selection criteria are: for any k-th terminal device, the large-scale information {β _m,k } _{m＝1,2,…,M} is arranged from large to small and added to the set one by one

until:

holds, where _Th ∈(0,1], _Th is a threshold set by the system, and β _m,k is a large-scale channel gain from the kth terminal device to the mth network device. It should be understood that a larger threshold value indicates a greater number of network devices serving terminal device k (kth terminal device).

的网络装置发送正交导频序列，导频数目为τ，τ≤K，K为预设值，用于导频传输的时间为τ/Bw秒(second，s)，其中B _w为系统所占据的带宽。 In the embodiment of the present application, the k-direction set of terminal devices

The network device sends an orthogonal pilot sequence, the number of pilots is τ, τ≤K, K is the default value, and the time used for pilot transmission is τ/Bw seconds (second, s), where _Bw is the system bandwidth occupied.

In a possible implementation, the number of terminal devices sharing the same pilot can be set not to exceed a preset number threshold, thereby reducing interference, improving reliability, and simplifying the calculation process of the algorithm.

比特的小包数据上传至网络装置，使得整个上行系统的加权和速率最大化并满足每个终端装置的最大能量约束E _k，其中B _w为系统的带宽，L为码块总数量(L也可以理解为导频和数据的总的分块长度，L为导频和数据对应的码块的总数量)，

为最小速率需求，k的取值可以从1至K的正整数，数学表达式可以表示为

The terminal device k in the embodiment of the present application can transmit data with transmission error probability ε _k within time T = L/B _w seconds.

Bits of packet data are uploaded to the network device to maximize the weighted sum rate of the entire uplink system and satisfy the maximum energy constraint E _k of each terminal device, where B _w is the bandwidth of the system and L is the total number of code blocks (L can also Understood as the total block length of pilot and data, L is the total number of code blocks corresponding to pilot and data),

For the minimum speed requirement, the value of k can be a positive integer from 1 to K, and the mathematical expression can be expressed as

Step 2: For the network device among the M network devices, after the network device receives the pilot sequence, the minimum mean square error (MMSE) algorithm is used to estimate the distance between the terminal device connected to it and the network device. channel and feeds the channel information back to the terminal device.

其中，β _m,k为第k个终端装置到第m个网络装置的大尺度信道增益，

为一通信设备k的导频的发射功率，

为第m个网络装置接收到的导频信号矩阵，

Optionally, the pilot sequence sent by the k-th terminal device is recorded as q _k , and MMSE channel estimation is adopted. Then, the channel estimation value of the m-th network device to the k-th terminal device is:

Where β _m,k is the large-scale channel gain from the kth terminal device to the mth network device,

is the transmission power of the pilot signal of a communication device k,

is the pilot signal matrix received by the mth network device,

如下：

为第m个网络装置的均值为0，方差为σ ²的加性高斯白噪声

in

as follows:

is the additive Gaussian white noise with a mean of 0 and a variance of σ ² for the m-th network device.

Pilots cannot be reused between two terminal devices connected to the same network device. k and k` are two terminal devices. The pilot sequence sent by the k`th terminal device is recorded as q _{k`</sub> , and M <sub>k</sub> is the The network device connected to k terminal devices, M <sub>k`} is the network device connected to the k`th terminal device, and the intersection of the network device connected to the k`th terminal device and the kth terminal device is not empty, Then the pilots of the two terminal devices are orthogonal, which can be expressed by the following formula

Step 3: The terminal device performs uplink data transmission.

Optionally, the time used for data transmission is (LK)/Bw _s , and T=L/ _Bw is the total delay requirement for uplink data packet transmission.

Step 4: The network device derives the rate lower bound of each terminal device under the delay requirement (T) and high reliability (ε _k ) requirement.

When the data transmission power and pilot transmission power of the kth terminal device are both set to 0.1 watt, the lower bound of the achievable rate of the terminal device k can be expressed as:

in:

可以是指任意的终端装置，可以理解为每个终端装置都可以进行计算，以得到该终端装置的速率下界，ε _k为终端装置k的传输差错概率，

为导频的总数量在导频和数据对应的总的码块的数量中的占比。

It can refer to any terminal device. It can be understood that each terminal device can be calculated to obtain the rate lower bound of the terminal device. ε _k is the transmission error probability of terminal device k,

is the ratio of the total number of pilots to the total number of code blocks corresponding to pilots and data.

的终端装置放入集合S。建立以集合S中的终端装置的数量最大化为目标，同时满足时延需求T、传输差错概率ε _k以及最小上行速率需求

的优化模型，求解该优化模型，可以得到导频数目至以及导频分配方案。 Step 5: The network device sets the rate lower bound to meet the preset minimum uplink rate requirement based on the rate lower bound of the uplink data of each terminal device calculated in step 4.

The terminal devices are put into the set S. The establishment aims to maximize the number of terminal devices in the set S, while meeting the delay requirement T, transmission error probability ε _k and the minimum uplink rate requirement.

By solving the optimization model, the number of pilots and the pilot allocation plan can be obtained.

该约束条件表示接入同一个网络装置的两个终端装置之间不能复用导频，k和k`为两个终端装置，第k`个终端装置发送的导频序列记为q _{k`</sub>，M <sub>k</sub>为第k个终端装置接入的网络装置，M <sub>k`}为第k`个终端装置接入的网络装置，第k`个终端装置和第k个终端装置所接入的网络装置的交集不为空，则该两个终端装置的导频正交。 The optimization model is established as: (P0)max|S|, and the constraints can be:

This constraint means that pilots cannot be reused between two terminal devices connected to the same network device. k and k` are two terminal devices. The pilot sequence sent by the k`th terminal device is recorded as q _{k`</sub> . M <sub>k</sub> is the network device connected to the k-th terminal device, M <sub>k`} is the network device connected to the k`-th terminal device, and the intersection of the network devices connected to the k`-th terminal device and the k-th terminal device If not empty, the pilots of the two terminal devices are orthogonal.

In another possible implementation, a constraint can also be added: the number of terminal devices sharing the same pilot can be set not to exceed a preset number threshold, thereby reducing interference, improving reliability, and simplifying the calculation process of the algorithm. .

Step 6: The network device solves the optimization model and obtains the number of pilots and pilot allocation information.

Optionally, step 6 may include steps 6.1 to 6.7.

The following is an example of 15 devices randomly distributed in a 200m*200m smart factory.

Step 6.1: Based on the principle that pilots cannot be reused between two terminal devices connected to the same network device, the network device establishes a K×K binary matrix B, in which the elements b _k, k of the kth row and k'th column _′ can be expressed as

分配方案可以如图5B所示，图5B示例性示出了图5A所示的无向图对应的一种导频分配方案的示意图。如图5B所示，基于Dsatur算法得到的导频分配方案中，有连线的终端装置不能用同样的导频。根据图5B可以看出，对于15个通信设备按照Dstaur算法仅需5个导频。导频数目τ ^Dsa为5，导频分配信息

为图5B所示的终端装置的分配方案的示例，比如图5B中所示的，终端装置1、终端装置9和终端装置13共用一个导频。 Among them, b _k,k' =1 means that the terminal device k and the terminal device k' cannot reuse the pilot. Therefore, the undirected graph shown in Figure 5A can be obtained. Figure 5A exemplarily shows a schematic diagram of an undirected graph provided by an embodiment of the present application. Each black circle in Figure 5A represents a terminal device. Figure 5A exemplarily shows a schematic diagram of the location distribution of each terminal device in a smart factory. The numbers near the black circle represent the label of the terminal device. Based on the undirected graph in Figure 5A, the number of pilots τ ^Dsa and pilot allocation information can be obtained using the Dsatur algorithm.

The allocation scheme may be as shown in Figure 5B. Figure 5B exemplarily shows a schematic diagram of a pilot allocation scheme corresponding to the undirected graph shown in Figure 5A. As shown in Figure 5B, in the pilot allocation scheme based on the Dsatur algorithm, connected terminal devices cannot use the same pilot. It can be seen from Figure 5B that only 5 pilots are needed according to the Dstaur algorithm for 15 communication devices. The number of pilots τ ^Dsa is 5, and the pilot allocation information

This is an example of the allocation scheme of the terminal device shown in FIG. 5B. For example, as shown in FIG. 5B, the terminal device 1, the terminal device 9 and the terminal device 13 share a pilot.

代入模型(P0)max|S|。重新计算集合S中的终端装置的数量，即重新依据前述方案计算终端装置的速率下界，并将速率下界满足预设最小上行速率需求

的终端装置放入集合S，之后计算更新后的集合S中终端装置的数量。 Step 6.2: The network device uses the number of pilots τ ^Dsa calculated in step 6.1 and the pilot allocation information.

Substitute into the model (P0)max|S|. Recalculate the number of terminal devices in the set S, that is, recalculate the rate lower bound of the terminal device according to the aforementioned solution, and set the rate lower bound to meet the preset minimum uplink rate requirement.

terminal devices into the set S, and then calculate the number of terminal devices in the updated set S.

或者根据基于Dsatur算法计算出的导频数目τ ^Dsa及导频分配信息

确定第二导频特征信息。一种可能的实施方式中，如果利用Dsatur算法重新计算的集合S中终端装置的数量等于数量K，则可以根据第二导频特征信息确定第一参数关联的第一导频特征信息(比如将第二导频特征信息作为第一导频特征信息)，结束计算流程。若基于Dsatur算法重新计算的集合S中终端装置的数量都小于数量K，则可以进一步对导频分配方案和导频数据进行迭代，比如可以执行下述步骤6.3。 In the above example, the second pilot characteristic information associated with the first parameter may include the number of pilots τ ^Dsa calculated based on the Dsatur algorithm in step 6.1 and the pilot allocation information.

Or based on the pilot number τ ^Dsa and pilot allocation information calculated based on the Dsatur algorithm

Determine second pilot characteristic information. In a possible implementation, if the number of terminal devices in the set S recalculated using the Dsatur algorithm is equal to the number K, the first pilot feature information associated with the first parameter can be determined based on the second pilot feature information (for example, The second pilot characteristic information is used as the first pilot characteristic information), and the calculation process ends. If the number of terminal devices in the set S recalculated based on the Dsatur algorithm is less than the number K, the pilot allocation plan and pilot data can be further iterated, for example, the following step 6.3 can be performed.

的终端装置放入集合S，之后计算更新后的集合S中终端装置的数量。 In another possible implementation, the network device determines the number of pilots based on the orthogonal pilot allocation scheme, and the number of pilots determined based on the orthogonal pilot allocation scheme (ie, the number K) is the same as the number K of the terminal devices. The pilot allocation information determined based on the orthogonal pilot allocation scheme may indicate that each terminal device is allocated one pilot. Substitute the pilot allocation information into the model (P0)max|S|. The network device recalculates the number of terminal devices in the set S, that is, recalculates the rate lower bound of the terminal device according to the aforementioned solution, and sets the rate lower bound to meet the preset minimum uplink rate requirement.

terminal devices into the set S, and then calculate the number of terminal devices in the updated set S.

In the above example, the second pilot characteristic information associated with the first parameter may also include the number of pilots and the pilot allocation scheme determined based on the orthogonal pilot allocation scheme in step 6.1, or calculated based on the orthogonal pilot allocation scheme. The number of pilots K and the pilot allocation plan determine the second pilot characteristic information. In a possible implementation, if the number of terminal devices in the set S recalculated using the orthogonal pilot allocation scheme is equal to the number K, the first pilot feature associated with the first parameter can be determined according to the second pilot feature information. information (for example, determining the second pilot characteristic information as the first pilot characteristic information), and the calculation process ends. If the number of terminal devices in the set S recalculated based on the orthogonal pilot allocation scheme is less than the number K, the pilot allocation scheme and pilot data can be further iterated, for example, the following step 6.3 can be performed.

In another possible implementation, if at least one of the previous two solutions (using at least one of the Dsatur algorithm and the orthogonal pilot allocation scheme) recalculates the number of terminal devices in the set S, it is equal to the number K, Then you can choose a solution in which the number of terminal devices in the set S satisfies the number K. In another possible implementation, if the number of terminal devices in the recalculated set S in the above two solutions is less than the number K, the following step 6.3 can be performed.

Step 6.3: The network device updates the pilot allocation plan and pilot number through one or more iterations until the preset iteration stop condition is reached, stops iteration, and determines the third pilot allocation plan based on the latest pilot number and pilot allocation plan obtained. First pilot characteristic information associated with a parameter.

In step 6.3, the network device may, for example, use the latest obtained number of pilots and pilot allocation plan as the first pilot characteristic information.

导频分配方案为

(在进行迭代时导频分配方案的初始值可以是预设的或上述任一方案((Dsatur算法或正交导频分配方案)得到的导频分配方案，或可以选择上述(Dsatur算法和正交导频分配方案中得到的集合S中数量较多的一个方案对应的导频分配方案；

为复用导频i的终端装置k'的上行数据传输速率，

复用导频i且无法满足速率需求的终端装置集合定义为

为复用导频i中无法满足速率需求的终端装置的集合中的一个或多个终端装置；离终端装置

物理距离最近的且复用导频i的终端装置定义为

可表示

其中，U _k′和

表示终端装置k′和终端装置

的位置二维坐标；问题(P0)目标函数值为Obj ^(t)；

为导频长度搜索范围。导频长度搜索范围可以是指在迭代算法中进行导频方案确定的时候，在导频长度与初始方案的导频长度的差值区间内进行搜索迭代。比如初始方案的导频长度为s1，导频长度搜索范围为n，则迭代算法中导频的长度为sl-n～s1+n，或者，s1～s1+n等。 The following takes the t-th iteration process as an example to introduce the iteration process. The value of t is 0 or a positive integer. The following first introduces the definition of each symbol in the t iteration: a ^{(t) is} the maximum number of terminal devices that can be supported in the first t iterations; the K×K binary matrix is B ^(t) ; the number of pilots is

The pilot allocation scheme is

(When iterating, the initial value of the pilot allocation scheme can be the preset or the pilot allocation scheme obtained by any of the above schemes ((Dsatur algorithm or orthogonal pilot allocation scheme)), or the above (Dsatur algorithm and orthogonal pilot allocation scheme) can be selected. The pilot allocation plan corresponding to the larger plan in the set S obtained from the cross pilot allocation plan;

is the uplink data transmission rate of terminal device k' that multiplexes pilot i,

The set of terminal devices that multiplex pilot i and cannot meet the rate requirement is defined as

It is one or more terminal devices in the set of terminal devices that cannot meet the rate requirement in the multiplexed pilot i; away from the terminal device

The terminal device with the closest physical distance and multiplexing pilot i is defined as

expressible

Among them, U _k′ and

represents the terminal device k′ and the terminal device

The two-dimensional coordinates of the position; the objective function value of the problem (P0) is Obj ^(t) ;

Search range for pilot length. The pilot length search range may refer to performing search iterations within the difference interval between the pilot length and the pilot length of the initial plan when determining the pilot plan in the iterative algorithm. For example, if the pilot length of the initial solution is s1 and the pilot length search range is n, then the pilot length in the iterative algorithm is sl-n~s1+n, or s1~s1+n, etc.

The specific iterative process is introduced below.

等于步骤6.2中基于Dsatur算法得到的导频数目；

等于步骤6.2中基于Dsatur算法得到的导频分配方案。针对无法满足速率需求的终端装置(比如可以为计算的速率下界最小的终端装置，本申请中该装置以该装置称为第一终端装置为例进行示意)

并找到离终端装置

(比如可以将该终端装置称为第一终端装置)物理位置最近的终端装置

(该终端装置可以称为第二终端装置，且终端装置

与终端装置

使用同一个导频)，可以写为如下表达式

The number of initialization iterations t = 0, B ⁽⁰⁾ = B, a ⁽⁰⁾ and Obj ⁽⁰⁾ are the maximum objective function values in the Dsatur algorithm and orthogonal pilot allocation scheme obtained in step 6.2, that is, the accessed terminal The maximum number of devices (can be the number of terminal devices in the set S calculated in the Dsatur algorithm and orthogonal pilot allocation scheme in step 6.2);

Equal to the number of pilots obtained based on the Dsatur algorithm in step 6.2;

It is equal to the pilot allocation scheme obtained based on the Dsatur algorithm in step 6.2. For terminal devices that cannot meet the rate requirements (for example, it can be the terminal device with the smallest calculated rate lower bound. In this application, the device is called the first terminal device as an example)

and find the device away from the terminal

(For example, this terminal device can be called the first terminal device) The terminal device with the closest physical location

(This terminal device may be called a second terminal device, and the terminal device

with terminal device

using the same pilot), can be written as the following expression

A terminal device that does not meet the rate requirement (such as the first terminal device) may be subject to greater interference, so the first requirement can be set. The first requirement indicates that the first terminal device and the second terminal device cannot reuse the same pilot, again constructing a new undirected graph. That is, increase the number of pilots and reconstruct a new undirected graph.

更新

和

的值均为1。更新B ^(t)＝B ^(t-1)，根据得到的B ^(t)。 In the embodiment of the present application, during the process of multiple iterations, the number of iterations can be updated, such as setting the number of iterations t plus 1. And use the previous iteration result as the input of the next iteration, for example, according to

renew

and

The values are all 1. Update B ^(t) = B ^(t-1) , based on the obtained B ^(t) .

Figure 5C exemplarily shows a possible schematic diagram after iteration of Figure 5B. As shown in Figure 5C, a new connection between terminal device 1 and terminal device 9 is added on the basis of Figure 5B. In the undirected graph Two connected terminal devices cannot share a pilot. The newly constructed undirected graph has new connections shown as dotted lines. Figure 5D exemplarily shows a schematic diagram of the pilot allocation scheme determined based on the undirected graph shown in Figure 5C. As shown in Figure 5D, in the new pilot allocation scheme, the terminal device 1 and the terminal device 9 do not share pilots. , the terminal device 1, the terminal device 11 and the terminal device 12 share the same pilot.

和导频分配方案

还可以得到新的目标函数值Obj ^(t)。进一步，可以判断是否满足迭代停止条件，若满足，则可以停止迭代，根据最新得到的导频数目

和导频分配方案

得到第一参数关联的第一导频特征信息。若不满足，则可以继续下一轮迭代。 Based on the updated undirected graph, the number of pilots is recalculated using the Dsatur algorithm.

and pilot allocation scheme

The new objective function value Obj ^(t) can also be obtained. Furthermore, it can be determined whether the iteration stop condition is met. If it is met, the iteration can be stopped. According to the latest number of pilots obtained

and pilot allocation scheme

Obtain first pilot feature information associated with the first parameter. If it is not satisfied, you can continue to the next iteration.

当Obj ^(t)＞a ^(t-1)，更新导频数目，可以表达为

更新分配方案，可以表达为：

及a ^(t)＝Obj ^(t)；当Obj ^(t)＜a ^(t-1)， During the next iteration, update

When Obj ^(t) > a ^(t-1) , update the number of pilots, which can be expressed as

Update the allocation plan, which can be expressed as:

And a ^(t) =Obj ^(t) ; when Obj ^(t) <a ^(t-1) ,

a ^(t) = a ^(t-1) . Keep iterating. The iterative process is as before and will not be described again.

或者迭代停止条件可以包括迭代次数大于预设迭代次数(预设迭代次数比如为20)，比如可以表达为t＞20。 When the iteration stop condition is met, the iteration is stopped. If the iteration stop condition is not met, the iteration continues. For example, the iteration stop condition may include: the difference between the current number of pilots and the initial value of the number of pilots is greater than the pilot length search range, which can be expressed as

Or the iteration stop condition may include that the number of iterations is greater than the preset number of iterations (the preset number of iterations is, for example, 20), which can be expressed as t>20, for example.

It should be understood that the specific implementation process shown in each of the above steps can be implemented in other ways, and this application does not limit this.

In implementation mode C2, the first terminal device determines pilot characteristic information.

In implementation C2, the way in which the first terminal device determines the pilot characteristic information is basically similar to the way in which the first network device determines the pilot characteristic information. For example, the above steps 302, 303 and 304 can be executed by the first terminal device, The specific implementation plan is similar to the above content and will not be described again. Before performing step 302, the first terminal device needs to obtain channel state information between one or more terminal devices and one or more network devices. The first pilot characteristic information is determined based on channel state information between one or more terminal devices and one or more network devices, and the plurality of terminal devices include the first terminal device.

The first terminal device may determine the channel state information between the first terminal device and the network device (such as the first network device) by receiving reference signals from one or more network devices (such as the first network device). There are many ways for the first terminal device to obtain the channel state information between other terminal devices and the network device. For example, the network device can deliver the channel state information between the network device and other terminal devices. For example, the first terminal device can obtain the channel state information between the network device and the other terminal devices. For example, the first terminal device can obtain the channel state information between the network device and the other terminal devices. The terminal device sends channel state information between the terminal device and one or more network devices to the first terminal device. Taking the following as an example in which multiple terminal devices also include one or more second terminal devices, this part of the content will be introduced through the following implementation mode C2-1 and implementation mode C2-2.

Embodiment C2-1: The first network device unicasts, multicasts or broadcasts the channel status information between the second terminal device and the first network device of one or more network devices.

In a possible implementation, each network device sends a reference signal. Each terminal device may determine channel state information between each terminal device and the network device based on the received reference signal. Each terminal device can feed back channel status information to each network device. Alternatively, the network device may receive a reference signal from the terminal device, and determine channel state information between the network device and each terminal device based on the reference signal from the terminal device.

Further, the network device may send the channel status information between the terminal device and the network device through unicast, multicast or broadcast. For example, the network device can send channel state information between the terminal device and the network device through (common RRC signaling or group DCI). For example, the first network device unicasts, multicasts or broadcasts the channel status information between the second terminal device and the first network device of one or more network devices. The information indicating the channel state information between the second terminal device and the first network device may be carried in scheduling information (such as DCI) or RRC messages. Other network devices may also send channel status information between the network device and the terminal device through unicast, multicast or broadcast. For example, the first network device sends to the first terminal device channel status information indicating channel status between the second terminal device and the first network device among the plurality of network devices. In this way, the first terminal device can obtain channel state information between one or more terminal devices and one or more network devices.

In yet another possible implementation, when the change amount of the channel state information between the second terminal device and the first network device is greater than the preset channel state information change threshold, the second terminal device: Send updated channel state information between the second terminal device and the first network device to the first network device. The first network device receives updated channel state information between the second terminal device and the first network device from the second terminal device. Further, the first network device may send updated channel state information between the second terminal device and the first network device to other terminal devices in a unicast, multicast or broadcast manner. This allows the first terminal device to obtain the latest channel state information between the second terminal device and the first network device, and then determine the communication conditions more accurately.

In embodiment C2-2, the first terminal device receives unicast or multicast information from the second terminal device indicating channel status information between the second terminal device and the first network device among the plurality of network devices.

In implementation C2-2, each network device sends a reference signal. Each terminal device may determine channel state information between each terminal device and the network device based on the received reference signal. Various terminal devices may interact with each other, so that one terminal device sends (such as unicast or multicast) channel state information between the terminal device and the network device to other terminal devices (such as the first terminal device). For example, the first terminal device receives unicast or multicast information from the second terminal device indicating channel status information between the second terminal device and the first network device among the plurality of network devices.

Similarly, the first terminal device may also send (such as unicast transmission) channel state information between the first terminal device and one or more network devices to other terminal devices (such as a second terminal device). For another example, the first terminal device multicasts the first terminal to the terminals in the first terminal device group (for example, the first terminal device group includes one or more terminal devices, for example, it may include one or more second terminal devices). Channel state information (or may also be called uplink channel state information) between the device and one or more network devices (such as the first network device).

For example, if a terminal device is set as the head user in the first terminal device group, and a second terminal device is set as the head user, then each other terminal device can communicate between the terminal device and the network device through unicast. The channel state information between the terminal devices is sent to the head user, and then the head user can multicast the communication between each terminal device and the network device in the first terminal device group to other terminal devices in the first terminal device group. Channel status information.

In a possible implementation, when the change amount of the channel state information between the first terminal device and the first network device is greater than a preset channel state information change threshold, the second terminal device: The first terminal device sends (unicast or multicast) updated channel state information between the second terminal device and the first network device.

Similarly, in another possible implementation, when the change amount of the channel state information between the first terminal device and the first network device is greater than the preset channel state information change threshold: A terminal device sends (unicast or multicast) updated channel state information between the first terminal device and the first network device to other terminal devices.

The solution for determining the first pilot characteristic information associated with the first parameter provided in the embodiment of the present application can also be executed by other devices, such as other equipment. The other equipment can obtain channel state information between multiple terminal devices and multiple network devices from the terminal device and/or the network device.

In the solution provided by the embodiment of the present application, the pilot allocation solution is optimized based on the channel state information of the terminal device and the network device. Establish an optimization model of the pilot allocation scheme based on delay reliability and establish a target optimization problem in order to optimize the number of pilots and the pilot allocation scheme, which can better meet the needs of ultra-high reliability and ultra-low latency communication (Ultra Reliable&Low Latency Communication) , uRLLC) users have ultra-low latency and ultra-high reliability. For example, in the above optimization scheme, for a terminal device that cannot meet the rate requirements, the device may have suffered strong interference and therefore cannot meet the rate. Therefore, new requirements can be set, such as sharing the original pilot allocation scheme with the terminal device. The terminal device with the same pilot is set so that it cannot share the same pilot with the terminal device, and the pilot allocation scheme is recalculated based on the new requirement. After many iterations, the purpose of optimizing the pilot allocation scheme is achieved.

Figure 6 exemplarily shows a schematic diagram of the effect of applying the scheme provided by the embodiment of the present application and the scheme of applying the Dsatur algorithm. Figure 6 (a), Figure 6 (b), Figure 6 (c) and Figure 6 (d) show the pilot allocation scheme of terminal devices in a region. In Figure 6, except for the small black dots representing base stations, other shapes (triangles, diamonds, hollow circles, crosses, x-shaped, stars, etc.) all represent terminal devices, and terminal device identifiers of the same shape can share the same pilot. The terminal device with (NO) written next to it indicates that the terminal device cannot meet the rate requirement. The number of pilots allocated to the terminal device in the area shown in Figure 6 (a) is 14, the number of pilots allocated to the terminal device in the area shown in Figure 6 (c) is 13, and the number of pilots allocated to the terminal device in the area shown in Figure 6 (b) and Figure 6 (d) is 12. (a) in FIG6 and (c) in FIG6 are pilot allocation schematic diagrams obtained by applying the scheme provided in the embodiment of the present application, and (b) in FIG6 and (d) in FIG6 are pilot allocation schematic diagrams obtained by applying the Dsatur algorithm. By comparing (a) in FIG6 and (b) in FIG6, and comparing (c) in FIG6 and (d) in FIG6, it can be seen that the application of the scheme provided in the embodiment of the present application can reduce the number of terminal devices that cannot meet the rate requirements and improve the overall system performance. It can be seen from the performance comparison after optimization that in the pilot allocation scheme obtained based on the Dsatur algorithm, some terminal devices that are very close to the base station cannot meet the rate requirements, while in the pilot allocation scheme obtained by the scheme provided in the embodiment of the present application, the terminal devices close to the base station can basically meet the rate requirements.

The names of the above-mentioned messages are only examples. With the evolution of communication technology, any of the above-mentioned messages may change their names. However, no matter how their names change, as long as their meanings are the same as those of the above-mentioned messages in this application, they all fall into the within the protection scope of this application.

In the embodiment of the present application, sending information to a terminal device may be understood to mean that the destination of the information is the terminal device. For example, module A sending information to the terminal includes: module A sends the information to the terminal through the air interface. Optionally, module A can perform baseband and/or medium radio frequency operations on the information; or module A submits the information to module B. , module B sends this information to the terminal. When module B sends the information to the terminal, it may transparently transmit the information, segment the information and then send the information, or multiplex the information with other information before sending the information. Optionally, module B can perform baseband and/or medium radio frequency operations on the information and then send the information, etc. Optionally, module B can encapsulate this information in a data packet. Optionally, module B can also add headers and/or padding bits to the data packet.

In the embodiment of the present application, receiving information from a terminal device can be understood to mean that the origin of the information is the terminal device. For example, module A receiving information from a terminal device includes: module A receiving the information from the terminal through the air interface. Optionally, module A can perform baseband and/or medium radio frequency operations on the information; or module B receiving the information from the terminal through the air interface. information and submit the information to module A. Among them, module B submits the information to module A, including: transparently submitting the received information to module A, combining the received multiple segments into the information and then submitting it to module A, or reusing the information from The information is extracted and submitted to module A. Optionally, module B can perform baseband and/or medium radio frequency operations on the received information and then send the information, etc. Optionally, the information received by module B is encapsulated in a data packet. Optionally, the data packet includes a header and/or stuffing bits, etc.

The above-mentioned module B may be one module, or multiple modules coupled in sequence, without limitation. For example, module A is a DU module, and module B is an RU module; for another example, module A is a CU-CP module, and module B is a DU module and an RU module.

The above mainly introduces the solution provided by this application from the perspective of interaction between various network elements. It can be understood that, in order to implement the above functions, each network element implemented above includes a corresponding hardware structure and/or software module for executing each function. Persons skilled in the art should easily realize that, with the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein, the present invention can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is performed by hardware or computer software driving the hardware depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each specific application, but such implementations should not be considered to be beyond the scope of the present invention.

According to the foregoing method, FIG. 7 is a schematic structural diagram of a device provided by an embodiment of the present application.

Referring to Figure 7, a simplified schematic diagram of an apparatus 1301 is provided. The device 1301 is used to implement the functions of the network element in the embodiment of the present application. For example, the network element may be a base station, a terminal, a DU, a CU, a CU-CP, a CU-UP or a RU. The device 1301 can be the network element, or a device that can be installed in the network element, or a device that can be used in conjunction with the network element, without limitation. For example, the device can be a chip or a chip system. Device 1301 includes an interface 1303 and a processor 1302. Optionally, the processor 1302 is used to execute the program 1305. The processor 1302 may store the program 1305, or obtain the program 1305 from other devices or other devices (eg, from the memory 1304 or downloaded from a third-party website, etc.). Optionally, device 1301 includes memory 1304. Memory 1304 is used to store programs 1306. The program 1306 can be stored in advance or loaded later. Optionally, the memory 1304 can also be used to store necessary data. These components work together to provide the various functions described in the embodiments of this application.

Processor 1302 may include one or more processors as a combination of computing devices. The processor 1302 may include one or more of the following: a microprocessor, a microcontroller, a digital signal processor (DSP), a digital signal processing device (DSPD), an application specific integrated circuit (ASIC), or a field programmable gate array. (FPGA), programmable logic device (PLD), gated logic, transistor logic, discrete hardware circuits, processing circuits or other suitable hardware, firmware, and/or configured to perform the various functions described in the embodiments of this application A combination of hardware and software. Processor 1302 may be a general-purpose processor or a special-purpose processor. For example, processor 1302 may be a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data. The central processing unit can be used to execute software programs and process data in the software programs.

Interface 1303 may include any suitable hardware or software for enabling communication with one or more computer devices (eg, network elements of embodiments of the present application). For example, in some embodiments, interface 1303 may include terminals and/or pins for wires coupling a wired connection or a wireless interface coupling a wireless connection. In some embodiments, interface 1303 may include transmitters, receivers, interfaces, and/or antennas. The interface may be configured to enable communication between computer devices (such as the network elements of the embodiments of the present application) using any available protocol (such as the 3GPP standard protocol).

The program in the embodiment of this application refers to software in a broad sense. Software can be program code, a program, a subroutine, an instruction set, a code, a code segment, a software module, an application, a software application, etc. The program may be run in a processor and/or computer to perform various functions and/or processes described in the embodiments of this application.

Memory 1304 may store necessary data required when processor 1302 executes software. Memory 1304 may be implemented using any suitable storage technology. For example, memory 1304 may be any available storage medium accessible to a processor and/or computer. Non-limiting examples of storage media include: random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory, EEPROM), compact disc read-only memory (CD-ROM), removable media, optical disk storage, magnetic disk storage media, magnetic storage devices, flash memory, registers, state memory, remote installation memory, local or remote memory components , or any other medium that can carry or store software, data or information and be accessible by a processor/computer.

The memory 1304 and the processor 1302 can be provided separately or integrated together. Processor 1302 may read information from memory 1304, store and/or write information in memory. Memory 1304 may be integrated into processor 1302. The processor 1302 and the memory 1304 may be provided in an integrated circuit (such as an application-specific integrated circuit (ASIC)). The integrated circuit may be provided in the network element or other network node in the embodiment of the present application. The dotted line on the memory 1304 in the figure further indicates that the memory is optional.

Furthermore, the communication device 1301 may further include a bus system, wherein the processor 1302 , the memory 1304 , and the interface 1303 may be connected via the bus system.

As shown in Figure 7, the device 1301 may be a first terminal device or a first network device, or may be a chip or circuit. For example, the chip or circuit may be provided on the first terminal device, or may be provided on the first network device. chip or circuit inside.

In the case where the device 1301 is used to implement the function of the first terminal device, in a possible implementation mode, the processor 1302 is used to obtain a pilot signal and communicate according to the pilot signal. The pilot signal is associated with a first parameter, and the first parameter includes at least one of the number of network devices in the applicable place of the first terminal device, the number of terminal devices in the applicable place of the first terminal device, the density of terminal devices in the applicable place, the size information of the applicable place, the scene type of the applicable place, the channel type corresponding to the applicable place, the data transmission rate threshold, the data transmission delay threshold, the data transmission bit error rate threshold, or the data transmission reliability threshold.

In a possible implementation, the processor 1302 is configured to determine the first parameter, and determine the first pilot feature information based on the first parameter and the correlation between the first parameter and the first pilot feature information.

In a possible implementation, the interface 1303 is configured to receive information from the first network device indicating an association between the first parameter and the first pilot characteristic information.

In a possible implementation, the interface 1303 is configured to receive pilot indication information from the first network device, where the pilot indication information indicates a first pilot set, and the processor 1302 is configured to determine the first pilot according to the pilot indication information. gather.

In a possible implementation, the processor 1302 is configured to determine the first parameter, determine the number of bits occupied by the pilot indication information according to the correlation between the number of bits occupied by the pilot indication information and the first parameter, and determine the number of bits occupied by the pilot indication information according to the relationship between the number of bits occupied by the pilot indication information and the first parameter. The number of bits, the pilot indication information is obtained from a preset position of the message carrying the pilot indication information, and the first pilot set is determined according to the pilot indication information.

In a possible implementation, the interface 1303 is configured to receive information indicating the pilot from the first network device. The processor 1302 is configured to determine the pilot according to the information indicating the pilot.

In a possible implementation, the interface 1303 is configured to receive a reference signal from a first network device among multiple network devices. The processor 1302 is configured to determine channel state information with the first network device according to the reference signal.

In a possible implementation, the interface 1303 is used to send channel state information between the first terminal device and the first network device to the first network device.

In a possible implementation, the interface 1303 is configured to receive reporting instruction information from the first network device.

In a possible implementation, the interface 1303 is configured to receive unicast, multicast or broadcast information from the first network device indicating channel status information between the second terminal device and the first network device.

In a possible implementation, the interface 1303 is configured to receive unicast or multicast information from the second terminal device indicating channel status information between the second terminal device and the first network device.

In a possible implementation, the interface 1303 is used to send channel state information between the first terminal device and the first network device to the second terminal device.

In a possible implementation, the interface 1303 is used to multicast channel state information between the first terminal device and the first network device to the terminal devices in the first terminal device group.

In a possible implementation, the interface 1303 is configured to: when the change amount of the channel state information between the first terminal device and the first network device is greater than a preset channel state information change threshold value: Send updated channel state information between the first terminal device and the first network device.

In a possible implementation, interface 1303 is used to send updated channel state information between the first terminal device and the first network device to the second terminal device when the change in channel state information between the first terminal device and the first network device is greater than a preset channel state information change threshold.

In a possible implementation, the interface 1303 is used to: when the change amount of the channel state information between the first terminal device and the first network device is greater than a preset channel state information change threshold value: The terminals in the group multicast the updated channel state information between the first terminal device and the first network device.

In the case where the device 1301 is used to implement the function of the first network device, in a possible implementation, the processor 1302 is used to obtain a pilot and communicate with the first terminal device according to the pilot. The pilot has an associated relationship with the first parameter, and the first parameter includes the number of network devices in the applicable location of the first terminal device, the number of terminal devices in the applicable location of the first terminal device, the density of terminal devices in the applicable location, and the number of terminal devices in the applicable location. At least one of the size information, the scene type of the applicable place, the channel type corresponding to the applicable place, the data transmission rate threshold, the data transmission delay threshold, the data transmission bit error rate threshold, or the data transmission reliability threshold.

In a possible implementation, the processor 1302 is configured to determine the first parameter, and determine the first pilot feature information based on the first parameter and the correlation between the first parameter and the first pilot feature information.

In a possible implementation, the interface 1303 is configured to send information indicating the correlation between the first parameter and the first pilot characteristic information to the first terminal device.

In a possible implementation, the interface 1303 is used to send pilot indication information to the first terminal device, where the pilot indication information indicates the first pilot set.

In a possible implementation, the processor 1302 is configured to determine the first parameter, determine the number of bits occupied by the pilot indication information according to the correlation between the number of bits occupied by the pilot indication information and the first parameter, and the first network device determines the number of bits occupied by the pilot indication information according to The number of bits occupied by the pilot indication information. The pilot indication information is sent through the interface 1303.

In a possible implementation, the interface 1303 is used to send information indicating the pilot to the first terminal device.

In a possible implementation, the interface 1303 is used to send a reference signal, and the reference signal is used to determine channel state information between the first network device and a terminal device among the plurality of terminal devices.

In a possible implementation, the interface 1303 is used to receive channel state information between the first terminal device and the first network device from the first terminal device.

In a possible implementation, the interface 1303 is used to send reporting instruction information to the first terminal device.

In a possible implementation, the interface 1303 is used to unicast, multicast or broadcast to indicate channel status information between the first network device and the first terminal device.

In a possible implementation, the interface 1303 is used to unicast, multicast or broadcast to indicate channel status information between the first network device and the second terminal device.

In a possible implementation, the interface 1303 is used to receive updated channel state information between the first terminal device and the first network device from the first terminal device. The updated first terminal device and the first network device The channel state information between the first terminal device and the first network device is sent by the first terminal device when the change amount of the channel state information between the first terminal device and the first network device is greater than the preset channel state information change amount threshold.

In the case where the device 1301 is used to implement the function of the first device, the first device may be a terminal device, a network device, or other devices. In a possible implementation, the processor 1302 is used to obtain multiple terminal devices and multiple Channel state information between network devices, determining second pilot characteristic information associated with the first parameter based on the channel state information, and determining a first number of terminal devices that meet a preset rate requirement value based on the second pilot characteristic information, When the first number is less than the preset user number threshold, the second pilot feature information associated with the first parameter is updated to obtain the first pilot feature information associated with the first parameter.

In a possible implementation, the processor 1302 is configured to increase the number of pilots indicated by the second pilot characteristic information to obtain the first pilot characteristic information when the first number is less than a preset user number threshold.

In a possible implementation, the processor 1302 is configured to, when the first number is less than a preset user number threshold, for the first terminal device that does not meet the rate requirement value, the second pilot characteristic information indicates the first terminal device Multiplex the same pilot with the second terminal device, set a first requirement, the first requirement indicates that the first terminal device and the second terminal device cannot reuse the same pilot, and perform one or more iterations according to the first requirement until When the preset iteration stop condition is met, the first pilot feature information associated with the first parameter is obtained.

For the concepts, explanations, detailed descriptions and other steps involved in the communication device related to the technical solutions provided by the embodiments of the present application, please refer to the descriptions of these contents in the foregoing methods or other embodiments, and will not be described again here.

According to the foregoing method, FIG. 8 is a schematic structural diagram of a device provided by an embodiment of the present application. As shown in FIG. 8 , the device 1401 may include a communication transceiver 1403 and a processor 1402. Further, the device 1401 may include a memory 1404. The dotted line on the memory 1404 in the figure further indicates that the memory is optional. The communication transceiver 1403 is used to input and/or output information; the processor 1402 is used to execute computer programs or instructions, so that the device 1401 implements the first terminal device, the first network device or the related solution in the above-mentioned Figure 2 or Figure 3. First installation method. In the embodiment of the present application, the communication transceiver 1403 can implement the solution implemented by the interface 1303 of Figure 7 , the processor 1402 can implement the solution implemented by the processor 1302 of Figure 7 , and the memory 1404 can implement the memory 1304 of Figure 7 The implemented solution will not be described again here.

Based on the above embodiments and the same concept, Figure 9 is a schematic diagram of a communication device provided by an embodiment of the present application. As shown in Figure 9, the device 1501 can be a first terminal device, a first network device or a first device, or it can be The chip or circuit may be, for example, a chip or circuit that may be provided in a first terminal device, another example may be a chip or circuit that may be provided in a second terminal device, or another example may be a chip or circuit that may be provided in a network device.

The device 1501 includes a processing unit 1502 and a communication unit 1503. Further, the device 1501 may or may not include a storage unit 1504. The memory unit 1504 in the figure is dotted to further indicate that the memory is optional.

In the case where the device 1501 is used to implement the function of the first terminal device, in a possible implementation: the processing unit 1502 is used to obtain a pilot and perform communication according to the pilot. The pilot has an associated relationship with the first parameter, and the first parameter includes the number of network devices in the applicable location of the first terminal device, the number of terminal devices in the applicable location of the first terminal device, the density of terminal devices in the applicable location, and the number of terminal devices in the applicable location. At least one of the size information, the scene type of the applicable place, the channel type corresponding to the applicable place, the data transmission rate threshold, the data transmission delay threshold, the data transmission bit error rate threshold, or the data transmission reliability threshold.

In the case where the device 1501 is used to implement the function of the first network device, in a possible implementation: the processing unit 1502 is used to obtain a pilot and communicate with the first terminal device according to the pilot. The pilot has an associated relationship with the first parameter, and the first parameter includes the number of network devices in the applicable location of the first terminal device, the number of terminal devices in the applicable location of the first terminal device, the density of terminal devices in the applicable location, and the number of terminal devices in the applicable location. At least one of the size information, the scene type of the applicable place, the channel type corresponding to the applicable place, the data transmission rate threshold, the data transmission delay threshold, the data transmission bit error rate threshold, or the data transmission reliability threshold.

In the case where the device 1501 is used to implement the function of the first device, in a possible implementation: the processor 1302 is used to process the unit 1502 to obtain channel state information between multiple terminal devices and multiple network devices, Determine the second pilot characteristic information associated with the first parameter according to the channel state information, and determine the first number of terminal devices that meet the preset rate requirement value based on the second pilot characteristic information, when the first number is less than the preset number of users In the case of a threshold, the second pilot feature information associated with the first parameter is updated to obtain the first pilot feature information associated with the first parameter.

For the concepts, explanations, detailed descriptions and other steps involved in the communication device related to the technical solutions provided by the embodiments of the present application, please refer to the descriptions of these contents in the foregoing methods or other embodiments, and will not be described again here.

It can be understood that the functions of each unit in the above device 1501 can be implemented with reference to the corresponding method embodiment, and will not be described again here.

It should be understood that the above division of units of the communication device is only a division of logical functions. In actual implementation, they may be fully or partially integrated into a physical entity, or may be physically separated. In this embodiment of the present application, the communication unit 1503 can be implemented by the interface 1303 of Figure 7, and the processing unit 1502 can be implemented by the processor 1302 of Figure 7.

According to the method provided by the embodiment of the present application, the present application also provides a computer program product. The computer program product includes: computer program code or instructions. When the computer program code or instructions are run on a computer, the computer causes the computer to execute Figure 2 Or the method of any one of the embodiments shown in Figure 3.

According to the method provided by the embodiment of the present application, the present application also provides a computer-readable storage medium. The computer-readable medium stores program code. When the program code is run on a computer, it causes the computer to execute Figure 2 or Figure 3 The method of any of the embodiments shown.

According to the method provided by the embodiment of the present application, the present application also provides a chip system, and the chip system may include a processor. The processor is coupled to the memory and can be used to execute the method of any one of the embodiments shown in Figure 2 or Figure 3. Optionally, the chip system also includes a memory. Memory is used to store computer programs (also called codes, or instructions). The processor is configured to call and run the computer program from the memory, so that the device equipped with the chip system executes the method of any one of the embodiments shown in Figure 2 or Figure 3.

According to the method provided by the embodiments of this application, this application also provides a system, which includes one or more of the aforementioned network devices.

In a possible implementation, the system may also include one or more terminal devices, such as the first terminal device and/or the second terminal device involved in the embodiments of this application.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, it may be implemented in whole or in part in the form of a computer program product. A computer program product includes one or more computer instructions. When computer instructions are loaded and executed on a computer, processes or functions according to embodiments of the present application are generated in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable device. Computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, e.g., computer instructions may be transmitted from a website, computer, server or data center via a wired link (e.g. Coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) means to transmit to another website, computer, server or data center. Computer-readable storage media can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or other integrated media that contains one or more available media. Available media may be magnetic media (e.g., floppy disks, hard disks, tapes), optical media (e.g., high-density digital video discs (DVD)), or semiconductor media (e.g., solid state disks (SSD) )wait.

It should be noted that part of this patent application document contains content protected by copyright. The copyright owner retains copyright except in making copies of the contents of the patent document or records in the Patent Office.

The network equipment in each of the above apparatus embodiments corresponds to the network equipment or terminal equipment in the terminal equipment and method embodiments, and corresponding modules or units perform corresponding steps. For example, the communication unit (transceiver) performs receiving or transmitting in the method embodiments. The steps other than sending and receiving may be executed by the processing unit (processor). For the functions of specific units, please refer to the corresponding method embodiments. There can be one or more processors.

The terms "component", "module", "system", etc. used in this specification are used to refer to computer-related entities, hardware, firmware, a combination of hardware and software, software, or software in execution. For example, a component may be, but is not limited to, a process, a processor, an object, an executable file, a thread of execution, a program and/or a computer running on a processor. Through the illustrations, both applications running on the computing device and the computing device may be components. One or more components can reside in a process and/or thread of execution and a component can be localized on one computer and/or distributed between two or more computers. Additionally, these components can execute from various computer-readable media having various data structures stored thereon. A component may, for example, be based on a signal having one or more data packets (eg, data from two components interacting with another component, a local system, a distributed system, and/or a network, such as the Internet, which interacts with other systems via signals) Communicate through local and/or remote processes.

Those of ordinary skill in the art will appreciate that the various illustrative logical blocks and steps described in connection with the embodiments disclosed herein can be implemented as electronic hardware, or a combination of computer software and electronic hardware. accomplish. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each specific application, but such implementations should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, devices and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be described again here.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated. to another system, or some features can be ignored, or not implemented. On the other hand, the coupling or direct coupling or communication connection between each other shown or discussed may be through some interfaces, and the indirect coupling or communication connection of the devices or units may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application can be integrated into one processing unit, each unit can exist physically alone, or two or more units can be integrated into one unit. Functions may be stored in a computer-readable storage medium when implemented in the form of software functional units and sold or used as independent products.

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person familiar with the technical field can easily think of changes or replacements within the technical scope disclosed in the present application, and all of them should be covered. within the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims (27)

A communication method, characterized in that the method includes: The first terminal device obtains a pilot, and the pilot is associated with a first parameter. The first parameter includes the number of network devices in the applicable location of the first terminal device, the number of network devices in the applicable location of the first terminal device, and the number of network devices in the applicable location of the first terminal device. The number of terminal devices, the density of terminal devices in the applicable place, the size information of the applicable place, the scene type of the applicable place, the channel type corresponding to the applicable place, the data transmission rate threshold, and the data transmission delay threshold , at least one of the data transmission bit error rate threshold, or the data transmission reliability threshold; The first terminal device communicates based on the pilot. The method of claim 1, wherein the pilot is a pilot among pilots included in the first pilot set; The first pilot set has an associated relationship with first pilot feature information; the first pilot feature information includes: at least one of density, number or length of pilots in the first pilot set ; The first pilot characteristic information has an associated relationship with the first parameter. The method of claim 2, wherein the first pilot feature information is one candidate pilot feature information among a plurality of candidate pilot feature information; The candidate pilot feature information includes first candidate pilot feature information and second candidate pilot feature information; the first candidate pilot feature information includes pilot density, pilot number, or pilot length. At least one of; the second candidate pilot feature information includes at least one of pilot density, pilot number, or pilot length; At least one of the density of pilots, the number of pilots, or the length of pilots in the first candidate pilot feature information and the second candidate pilot feature information is different. The method according to claim 2 or 3, characterized in that the method further includes: The first terminal device receives information indicating an association relationship between the first parameter and the first pilot feature information from the first network device. The method according to any one of claims 1 to 4, wherein the pilot is a pilot among pilots included in a first pilot set, and the first pilot set and the first parameter Have an associated relationship; The method also includes: The first terminal device receives pilot indication information from a first network device, where the pilot indication information indicates the first pilot set; The first terminal device determines the first pilot set according to the pilot indication information. The method of claim 5, wherein the number of bits occupied by the pilot indication information is associated with the first parameter. The method according to any one of claims 1 to 6, wherein the first terminal device obtains the pilot signal, comprising: The first terminal device receives information indicating the pilot from the first network device; The first terminal device determines the pilot according to the information indicating the pilot. The method according to any one of claims 1 to 7, characterized in that the method further includes at least one of the following: The first terminal device receives unicast, multicast or broadcast from the first network device indicating channel status information between the second terminal device and the first network device; The first terminal device receives unicast or multicast information from the second terminal device indicating channel status information between the second terminal device and the first network device; The first terminal device sends channel state information between the first terminal device and the first network device to the second terminal device; or, The first terminal device multicasts the channel state information between the first terminal device and the first network device to the terminal devices in the first terminal device group. A communication method, characterized in that the method includes: The first network device obtains a pilot, and the pilot is associated with a first parameter. The first parameter includes the number of network devices in the applicable location of the first terminal device, the number of terminal devices in the applicable location of the first terminal device. Quantity, density of terminal devices in the applicable place, size information of the applicable place, scene type of the applicable place, channel type corresponding to the applicable place, data transmission rate threshold, data transmission delay threshold, data At least one of the transmission bit error rate threshold or the data transmission reliability threshold; The first network device communicates with the first terminal device according to the pilot. The method of claim 9, wherein the pilot is a pilot among pilots included in the first pilot set; The first pilot set has an associated relationship with first pilot feature information; the first pilot feature information includes: at least one of density, number or length of pilots in the first pilot set ; The first pilot characteristic information is associated with the first parameter. The method of claim 10, wherein the first pilot feature information is one candidate pilot feature information among a plurality of candidate pilot feature information; The candidate pilot feature information includes first candidate pilot feature information and second candidate pilot feature information; the first candidate pilot feature information includes at least one of pilot density, the number of pilots, or the length of the pilot; the second candidate pilot feature information includes at least one of pilot density, the number of pilots, or the length of the pilot; At least one of the density of pilots, the number of pilots, or the length of pilots in the first candidate pilot feature information and the second candidate pilot feature information is different. The method according to claim 10 or 11, characterized in that the method further includes: The first network device sends information indicating an association between the first parameter and the first pilot feature information to the first terminal device. The method according to any one of claims 9 to 12, wherein the pilot is a pilot among pilots included in a first pilot set, and the first pilot set and the first parameter Have an associated relationship; The method also includes: The first network device sends pilot indication information to the first terminal device, where the pilot indication information indicates the first pilot set. The method of claim 13, wherein the number of bits occupied by the pilot indication information is associated with the first parameter. The method according to any one of claims 9-14, characterized in that the method further includes: The first network device sends information indicating the pilot to a first terminal device. The method according to any one of claims 9-15, characterized in that the method further includes: The first network device unicasts, multicasts or broadcasts the channel state information between the first network device and the first terminal device; and/or, The first network device unicasts, multicasts or broadcasts the channel status information between the first network device and the second terminal device. A communication method, characterized in that the method includes: Obtaining channel state information between multiple terminal devices and multiple network devices; Determine second pilot characteristic information associated with the first parameter according to the channel state information. The second pilot characteristic information includes the number of pilots and pilot allocation information. The pilot allocation information indicates the number of pilots. The allocation method of pilots among the plurality of terminal devices, the first parameter includes the number of network devices in the applicable location of the first terminal device, the number of terminal devices in the applicable location of the first terminal device, The density of terminal devices in the applicable place, the size information of the applicable place, the scene type of the applicable place, the channel type corresponding to the applicable place, data transmission rate threshold, data transmission delay threshold, data transmission error At least one of the code rate threshold or the data transmission reliability threshold; Determine a first number of terminal devices that meet a preset rate requirement value based on the second pilot characteristic information; When the first number is less than the preset user number threshold, the second pilot feature information associated with the first parameter is updated to obtain the first pilot feature information associated with the first parameter. The method of claim 17, wherein the second pilot characteristic information indicates the presence of at least two terminals, and the at least two terminals multiplex one pilot. The method according to claim 17 or 18, characterized in that when the first number is less than a preset user number threshold, updating the second pilot characteristic information associated with the first parameter to obtain the first pilot characteristic information associated with the first parameter comprises: If the first number is less than the preset user number threshold, the number of pilots indicated by the second pilot feature information is increased to obtain the first pilot feature information. The method of claim 19, wherein when the first number is less than a preset user number threshold, the number of pilots indicated by the second pilot characteristic information is increased to obtain the first number of pilots. One pilot characteristic information, including: When the first number is less than the preset user number threshold, for the first terminal device that does not meet the rate requirement value, the second pilot characteristic information indicates that the first terminal device and the second terminal device Reuse the same pilot; Setting a first requirement, the first requirement indicating that the first terminal device and the second terminal device cannot reuse the same pilot; One or more iterations are performed according to the first requirement until a preset iteration stop condition is met, thereby obtaining first pilot characteristic information associated with the first parameter. The method of claim 20, wherein the second pilot characteristic information indicates that the first terminal device multiplexes the first pilot with a plurality of third terminal devices; The second terminal device is the third terminal device that is physically closest to the first terminal device among the plurality of third terminal devices. The method of claim 20 or 21, wherein the preset iteration stop condition includes at least one of the following: The number of terminal devices that meet the preset rate requirement value is not less than the preset user number threshold; The difference between the current number of pilots and the initial value of the number of pilots is greater than the preset value; or, The number of iterations is greater than the preset number of iterations. A communication device, characterized in that it includes a communication interface and at least one processor, and the communication interface and the at least one processor are interconnected through lines; The communication interface is used to input and/or output signaling or data; The processor is used to execute a computer executable program so that the method described in any one of claims 1 to 22 is executed. A communication device, characterized by including a processor and a memory, The memory is used to store computer programs or instructions; The processor is configured to execute computer programs or instructions in the memory, so that the method described in any one of claims 1-22 is executed. A communication device, characterized by comprising a processing unit and a communication unit, the processing unit being configured to execute the method according to any one of claims 1-22 through the communication unit. A computer-readable storage medium, characterized in that the computer-readable storage medium stores computer-executable instructions, and when called by a computer, the computer-executable instructions cause any one of claims 1-22 to The method is executed. A chip system, characterized in that the chip system includes at least one processor and an interface circuit, the interface circuit and the at least one processor are interconnected through lines, and the processor executes the claims by running instructions The method described in any one of 1-22.

Images