WO2020169063A1 - Data transmission method, and communication apparatus - Google Patents

Abstract

A data transmission method, and a communication apparatus. The method comprises: receiving a downlink control channel, wherein the downlink control channel indicates a first time-frequency resource, and a first service type corresponding to data scheduled by the downlink control channel and transmitted by a downlink data channel; determining, according to the first service type, a second time-frequency resource that is not used for transmitting the data of the first service type; and receiving the downlink data channel on a third time-frequency resource, wherein the third time-frequency resource is part or all of the first time-frequency resource, and the third time-frequency resource does not comprise the second time-frequency resource. By means of the technical solution provided in the present application, a terminal device can determine, according to a service type, a third transmission resource where a downlink data channel is located, so as to achieve the purposes of determining a rate matching parameter according to the service type and improving the resource utilization rate.

Description

Data transmission method and communication device

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office, the application number is 201910127403.5, and the application name is "a data transmission method and communication device" on February 20, 2019, the entire content of which is incorporated into this application by reference in.

Technical field

This application relates to the field of communication technology, and in particular to a data transmission method and communication device.

Background technique

In wireless communication systems, for example, in the new radio (NR) technology of the fifth generation (5G) mobile communication system, some rate matching resources that are not used to transmit downlink data channels are defined. For example, they can be statically configured and not used. To transmit the resources of the downlink data channel, some resources can also be included in one or two groups, and then the downlink control channel is used to indicate whether the resources in each group can be used to transmit the downlink data channel.

The wireless communication system supports multiple service types. For example, NR supports enhanced mobile broadband (eMBB), ultra-reliable and low-latency communications (URLLC) and other service types.

In the prior art, for a terminal that supports multiple services, the network side does not distinguish between service types and perform static rate matching resource configuration, nor does it distinguish between service types. Part of the resources are included in one or two groups for rate matching resources. Configuration. This kind of rate matching resource configuration without distinguishing service types will affect resource utilization.

Summary of the invention

The embodiments of the present application provide a data transmission method and a communication device, which are configured to perform rate matching configuration according to the service type of the transmitted data, thereby improving resource utilization.

In the first aspect, embodiments of the present application provide a data transmission method, which can be applied to a terminal device, and the method includes: receiving a downlink control channel, the downlink control channel indicating a first time-frequency resource and downlink data scheduled by the downlink control channel The first service type corresponding to the data transmitted by the channel; according to the first service type, the second time-frequency resource that is not used to transmit the data of the first service type is determined; the downlink data channel is received on the third time-frequency resource, and the third The time-frequency resource is part or all of the first time-frequency resource, and the third time-frequency resource does not include the second time-frequency resource.

Through the above technical solution, the terminal device can determine the third transmission resource to receive the downlink data channel according to the service type, so that the rate matching parameter can be determined according to the service type, and the resource utilization rate can be effectively improved.

In a possible design, the downlink control channel carries rate matching indication information; the second time-frequency resource includes a fourth time-frequency resource, and the fourth time-frequency resource is the intersection of the first time-frequency resource and the fifth time-frequency resource , The fifth time-frequency resource is the time-frequency resource not used to transmit the downlink data channel determined according to the rate matching indication information, the fifth time-frequency resource is part or all of the sixth time-frequency resource, and the sixth time-frequency resource is The candidate time-frequency resources that are not used to transmit data of the first service type are determined according to the first set of rate matching information, and the first set of rate matching information is determined according to the first service type.

Through the above technical solution, the terminal device can determine the fourth time-frequency resource not used to transmit the downlink data channel according to the first service type, thereby achieving the purpose of determining the rate matching parameter according to the service type.

In a possible design, the second time-frequency resource also includes a seventh time-frequency resource, the seventh time-frequency resource is the intersection of the first time-frequency resource and the eighth time-frequency resource, and the eighth time-frequency resource is based on the The two sets of rate matching information determine time-frequency resources that are not used to transmit data of the first service type, and the second set of rate matching information is determined according to the first service type.

Through the above technical solution, the terminal device can determine the seventh time-frequency resource not used to transmit the downlink data channel according to the first service type, thereby achieving the purpose of determining the rate matching parameter according to the service type.

In a possible design, the first set of rate matching information and the third set of rate matching information determined according to the second service type are independently configured, and the third set of rate matching information is used to determine that the rate matching information is not used to transmit the second service type. Candidate time-frequency resources of data; and/or, the second set of rate matching information and the fourth set of rate matching information determined according to the second service type are independently configured, and the fourth set of rate matching information is used to determine not to transmit the second The time-frequency resource of the data of the service type.

Through the above technical solution, the rate matching parameters of different service types can be independently configured without interfering with each other, which can effectively improve the flexibility of rate matching parameter configuration.

In a possible design, the first service type is determined by one or more of the following information: the service type indication in the downlink control information DCI carried by the downlink control channel, and the wireless network of the downlink control channel The temporary identifier RNTI, the search space set where the downlink control channel is located, the control resource set CORESET where the downlink control channel is located, the format of the DCI carried by the downlink control channel, the subcarrier interval of the downlink data channel, the The bandwidth part BWP where the downlink data channel is located, the mapping type of the downlink data channel, and the time domain duration of the downlink data channel.

Through the above technical solution, the flexibility of service type indication can be effectively improved.

In the second aspect, the embodiments of the present application provide another data transmission method, which can be applied to network equipment, and the method includes: sending a downlink control channel, the downlink control channel indicating the first time-frequency resource and the downlink scheduled by the downlink control channel The first service type corresponding to the data transmitted by the data channel; the downlink data channel is sent on the third time-frequency resource, which is part or all of the first time-frequency resource, and the third time-frequency resource does not include The second time-frequency resource. The second time-frequency resource is a time-frequency resource that is determined according to the first service type and is not used to transmit data of the first service type.

With the above technical solution, the network device can determine the third transmission resource to be transmitted on the downlink data channel according to the service type, so that the rate matching parameter can be configured according to the service type, which can effectively improve resource utilization.

In a possible design, the second time-frequency resource includes a fourth time-frequency resource, the fourth time-frequency resource is the intersection of the first time-frequency resource and the fifth time-frequency resource, and the fifth time-frequency resource is the sixth time-frequency resource. Part or all of the time-frequency resources of the frequency resource. The sixth time-frequency resource is a candidate time-frequency resource indicated by the first set of rate matching information and not used to transmit data of the first service type, and the rate matching indication information carried in the downlink control channel indicates The fifth time-frequency resource is not used to transmit the downlink data channel; the method further includes: sending the first set of rate matching information, where the first set of rate matching information corresponds to the first service type.

Through the above technical solution, the network device can determine the fourth time-frequency resource not used to transmit the downlink data channel according to the first service type, and send the first set of rate matching information used to determine the fourth time-frequency resource, so as to realize the Type is the purpose of configuring rate matching parameters.

In a possible design, the second time-frequency resource also includes a seventh time-frequency resource, which is the intersection of the first time-frequency resource and the eighth time-frequency resource, and the eighth time-frequency resource is the second time-frequency resource. The time-frequency resources that are not used to transmit data of the first service type indicated by the group rate matching information; the method further includes: sending the second group of rate matching information, the second group of rate matching information corresponding to the first service type.

Through the above technical solution, the network device can determine the seventh time-frequency resource not used to transmit the downlink data channel according to the first service type, and send the second set of rate matching information used to determine the seventh time-frequency resource, so as to realize Type is the purpose of configuring rate matching parameters.

In a possible design, the method further includes: independently configuring a first set of rate matching information and a third set of rate matching information corresponding to the second service type, and the third set of rate matching information is used to indicate that it is not used for transmission Candidate time-frequency resources for data of the second service type; and/or independently configure the second set of rate matching information and the fourth set of rate matching information determined according to the second service type, and the fourth set of rate matching information is used to determine Time-frequency resources not used to transmit data of the second service type.

Through the above technical solution, network equipment can independently configure rate matching parameters of different service types, thereby effectively improving the flexibility of rate matching parameter configuration.

In a possible design, the first service type is indicated by one or more of the following information: the service type indication in the downlink control information DCI carried by the downlink control channel, and the wireless network of the downlink control channel The temporary identifier RNTI, the search space set where the downlink control channel is located, the control resource set CORESET where the downlink control channel is located, the format of the DCI carried by the downlink control channel, the subcarrier interval of the downlink data channel, the The bandwidth part BWP where the downlink data channel is located, the mapping type of the downlink data channel, and the time domain duration of the downlink data channel.

Through the above technical solution, the flexibility of service type indication can be effectively improved.

In a third aspect, an embodiment of the present application provides a communication device that has the function of realizing the terminal device in the first aspect or any one of the possible designs of the first aspect. The function can be implemented by hardware or by The hardware executes corresponding software implementation, and the hardware or software includes one or more modules corresponding to the above-mentioned functions.

In a possible design, the structure of the communication device includes a processing module and a transceiver module, wherein the processing module is configured to support the communication device to perform the corresponding function in the first aspect or any one of the first aspects. . The transceiver module is used to support the communication between the communication device and other communication devices, such as receiving the downlink control channel or the downlink data channel sent by the network device. The communication device may also include a storage module, which is coupled with the processing module, which stores program instructions and data necessary for the communication device. As an example, the processing module may be a processor, the communication module may be a transceiver, and the storage module may be a memory. The memory may be integrated with the processor or may be provided separately from the processor, which is not limited in this application.

In a fourth aspect, an embodiment of the present application provides a chip system, including: a processor, the processor is coupled with a memory, the memory is used to store a program or an instruction, when the program or an instruction is executed by the processor , Enabling the chip system to implement any of the possible design methods in the first aspect.

In a fifth aspect, an embodiment of the present application provides a computer-readable storage medium, which stores computer-readable instructions. When the computer reads and executes the computer-readable instructions, the computer is caused to execute the first Any one of the possible design methods.

In a sixth aspect, the embodiments of the present application provide a computer program product. When the computer reads and executes the computer program product, the computer executes any of the possible design methods in the first aspect.

In a seventh aspect, an embodiment of the present application provides a communication device that has the function of realizing the above-mentioned second aspect or any of the network devices in the possible design of the second aspect. The function can be implemented by hardware or by The hardware executes corresponding software implementation, and the hardware or software includes one or more modules corresponding to the above-mentioned functions.

In a possible design, the structure of the communication device includes a processing module and a transceiver module, wherein the processing module is configured to support the communication device to perform the corresponding function in the second aspect or any one of the second aspects above. . The transceiver module is used to support the communication between the communication device and other communication equipment, such as sending a downlink control channel or a downlink data channel to a terminal device. The communication device may also include a storage module, which is coupled with the processing module, which stores program instructions and data necessary for the communication device. As an example, the processing module may be a processor, the communication module may be a transceiver, and the storage module may be a memory. The memory may be integrated with the processor or may be provided separately from the processor, which is not limited in this application.

In an eighth aspect, an embodiment of the present application provides a chip system, including: a processor, the processor is coupled with a memory, the memory is used to store a program or an instruction, when the program or instruction is executed by the processor , Enabling the chip system to implement any of the possible design methods in the second aspect.

In a ninth aspect, an embodiment of the present application provides a computer-readable storage medium having computer-readable instructions stored in the computer storage medium. When the computer reads and executes the computer-readable instructions, the computer executes the second Any one of the possible design methods in the aspect.

In a tenth aspect, an embodiment of the present application provides a computer program product. When the computer reads and executes the computer program product, the computer executes any of the possible design methods in the second aspect.

In an eleventh aspect, an embodiment of the present application provides a communication device that has the function of a terminal device in any possible design of the foregoing first aspect or the first aspect, or has the capability of implementing the foregoing second or second aspect. The function of network equipment in any possible design.

Description of the drawings

FIG. 1 is a schematic diagram of a control resource set applicable to an embodiment of this application;

2 is a schematic diagram of a group of time-frequency resources corresponding to a control resource set applicable to an embodiment of this application;

FIG. 3 is a schematic diagram of a network architecture of a communication system to which an embodiment of this application is applicable;

FIG. 4 is a schematic flowchart of a data transmission method provided by an embodiment of the application;

FIG. 5 is a schematic structural diagram of a communication device provided by an embodiment of this application;

FIG. 6 is a schematic structural diagram of another communication device provided by an embodiment of this application;

FIG. 7 is a schematic structural diagram of another communication device provided by an embodiment of this application.

detailed description

The embodiments of the present application will be described in further detail below in conjunction with the accompanying drawings.

Hereinafter, some terms in the embodiments of the present application will be explained.

1) Terminal equipment, also known as user equipment (UE), mobile station (MS), mobile terminal (MT), etc., is a way to provide users with voice and/or data connectivity The terminal device can communicate with the core network via a radio access network (RAN) and exchange voice and/or data with the RAN. For example, the terminal device can be a handheld device with wireless connection function, Vehicle equipment, etc. At present, some examples of terminal devices are: mobile phones (mobile phones), tablets, laptops, palmtop computers, mobile internet devices (MID), wearable devices, virtual reality (VR) devices, augmented Augmented reality (AR) equipment, wireless terminals in industrial control (industrial control), wireless terminals in self-driving (self-driving), wireless terminals in remote medical surgery, and smart grid (smart grid) The wireless terminal in the transportation safety (transportation safety), the wireless terminal in the smart city (smart city), the wireless terminal in the smart home (smart home), etc. The terminal device may also specifically refer to one or more chips in the aforementioned terminal device, or one module in the terminal device, etc., which is not limited in the embodiment of the present application.

2) Network equipment is the equipment used in the network to connect terminal equipment to the wireless network. The network equipment may be a node in a radio access network, which may also be referred to as a base station, or a radio access network (RAN) equipment (or node). The network device can be used to convert received air frames and Internet Protocol (IP) packets to each other, and act as a router between the terminal device and the rest of the access network, where the rest of the access network may include an IP network. The network equipment can also coordinate the attribute management of the air interface. For example, the network equipment may include an evolved base station (NodeB or eNB or e-NodeB, evolutional Node B) in a long term evolution (LTE) system or an evolved LTE system (LTE-Advanced, LTE-A), or It may also include the next generation node B (gNB) in the 5G NR system, or it may also include a transmission reception point (TRP), a home base station (for example, home evolved NodeB, or home Node B, HNB), baseband unit (BBU), or WiFi access point (access point, AP), etc., or may also include the centralized unit (cloud radio access network, CloudRAN) system Centralized unit (CU) and distributed unit (DU) are not limited in this embodiment of the application.

Terminal equipment and network equipment can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted; they can also be deployed on water; they can also be deployed on airborne aircraft, balloons, and satellites. The embodiments of the present application do not limit the application scenarios of terminal devices and network devices.

3) Business type, which can also be called business application scenario or application scenario. The service types involved in the embodiments of this application may include, for example, URLLC, eMBB, massive machine type communications (mMTC), or other service types. Different service types have different requirements on the delay and/or reliability of data transmission. Even if it is the same service type (such as URLLC), under more detailed service types, different URLLC services have different requirements for delay and reliability. It may be different.

For example, the URLLC service has extremely high requirements for delay, and the transmission delay is generally required to be within 1 millisecond (millisecond, ms), and data generation is bursty and random. The data volume of eMBB business is relatively large, and the transmission rate is relatively high.

4) Physical downlink control channel (PDCCH), a downlink control channel sent by a network device (such as a base station) to a terminal device, is used at least for one or more of the following functions: (1) The terminal device sends downlink scheduling information, which is also called downlink assignment (downlink assignment) information. The downlink scheduling information includes the transmission parameters of a physical downlink shared channel (PDSCH) so that the terminal device can receive the PDSCH. Among them, PDSCH is a downlink data channel used to carry downlink data sent by network equipment to terminal equipment; (2) Carrying radio network temporary identifier (RNTI) information, RNTI information can be implicitly included in the cyclic redundancy check Such as cyclic redundancy check (CRC), the RNTI information is used by the terminal device to determine whether the PDCCH sent by the network device is for itself.

Among them, the information carried by the PDCCH can be called downlink control information (DCI). One PDCCH can carry a DCI scrambled by an RNTI in a format, and the information carried by the DCI can be based on the DCI format (format ), and/or high-level signaling (for example, radio resource control (Radio Resource Control, RRC) signaling) configuration is different. DCI can indicate cell-level information, such as instructing terminal equipment to use system information, radio network temporary identifier (RNTI, SI-RNTI), paging RNTI (paging RNTI, P-RNTI), or random access RNTI (radom access RNTI, RA-RNTI) scrambled downlink control information. DCI can also indicate terminal equipment-level information, such as instructing terminal equipment to use cell RNTI (cell RNTI, C-RNTI), configure scheduling RNTI (configured scheduling RNTI, CS-RNTI), or semi-persistent CSI RNTI (semi-persistent CSI RNTI, SP CSI-RNTI) scrambled downlink control information.

A network device may send multiple PDCCHs on a control resource set, and the multiple PDCCHs may carry the same or different control information, including scheduling information for downlink data or scheduling information for uplink data, that is, the scheduling information can schedule terminal equipment It can also schedule the uplink data of the terminal equipment. In addition, a network device can also schedule multiple terminal devices in a control resource set, and one scheduling information is transmitted on one PDCCH.

A PDCCH is sent in the form of a control channel element (control-channel element, CCE), which can also be called a time-frequency resource of a PDCCH includes one or more CCEs. Among them, a CCE may be composed of multiple resource element groups (REG), for example, a CCE may be composed of 6 REGs. One REG can be several resource blocks (RB) on several orthogonal frequency division multiplexing (OFDM) symbols. For example, one REG can be one on one OFDM symbol. Resource block (resource block, RB). One REG can be composed of several resource elements (resource elements, RE), for example, one REG can be composed of 12 resource elements (resource elements, RE), and the number of 12 REs in one REG ranges from 0 to 11.

Table 1 Aggregation levels supported by PDCCH

The PDCCH can support different aggregation levels (AL). For example, the aggregation levels supported by the PDCCH may include {1, 2, 4, 8, 16} and so on. Wherein, the aggregation level indicates the number of CCEs occupied by a candidate PDCCH. For example, as shown in Table 1, if the aggregation level supported by the PDCCH is 4, it means that the candidate PDCCH occupies 4 CCEs. In practical applications, the network equipment will determine the current aggregation level used by the PDCCH according to factors such as channel quality. For example, if the PDCCH is sent to a terminal device with good downlink channel quality (for example, a terminal device located in the center of a cell), the network device can use aggregation level 1 to send the PDCCH; if the PDCCH is sent to a downlink channel with poor quality For a terminal device (for example, a terminal device located at the edge of a cell), the network device can use an aggregation level of 8 or even 16 to transmit the PDCCH to achieve sufficient robustness.

5) Control resource set (CORESET), corresponding to a group of time-frequency resource blocks, used to carry PDCCH. As shown in FIG. 1, a time-frequency resource block corresponding to a CORESET may include one or more OFDM symbols in the time domain, and may be composed of several resource blocks (RB) in the frequency domain.

Table 2 Two configuration methods of CORESET

The frequency domain parameters and time domain interval parameters of a CORESET can be configured through high-level signaling (such as RRC signaling). For example, as shown in Table 2, the frequency domain parameters and time domain interval parameters of a CORESET can be configured by the RRC information unit ControlResourceSet or ControlResourceSetZero. The size of a CORESET time-frequency resource block can be determined according to the frequency domain parameters and time domain interval parameters of CORESET. Multiple CORESETs can be configured for a UE, and the parameter sets on these CORESETs can be the same or different. It is also possible to configure a CORESET for a UE.

6) For the candidate PDCCH, the terminal device obtains downlink control information, and can perform blind detection on the configured aggregation level and the candidate PDCCH corresponding to the aggregation level. Network equipment can be configured with aggregation level sets. For example, an aggregation level set {1, 2, 4, 8, 16} can be configured, a group of corresponding number of CCEs corresponds to a candidate PDCCH (PDCCH candidate), and the network device can send a PDCCH through one of the candidate PDCCHs, correspondingly, The terminal device performs blind detection on candidate PDCCHs with aggregation levels of 1, 2, 4, 8, or 16, respectively, to confirm whether there is a PDCCH sent to itself.

7) Search space set (search space set, SS set), the candidate PDCCH set that can be monitored by the terminal device is called the search space set. The set of candidate PDCCHs corresponding to a certain aggregation level can be referred to as the search space under the aggregation level. A search space set is configured with parameters associated with it, such as one or more of the following parameters: control resource set, PDCCH monitoring period, aggregation level, and the number of candidate PDCCHs corresponding to the aggregation level.

A search space set can be configured through high-level signaling (such as RRC signaling). For example, a search space set can be configured by the RRC information unit SearchSpace or searchSpaceZero. When configured by SearchSpace, it contains one or more of the following parameters: the period in slot units and the starting slot offset (monitoringSlotPeriodicityAndOffset), the number of continuous slots in a period (duration), bitmap indicates each slot The starting symbol within (monitoringSymbolsWithinSlot). When configured by searchSpaceZero, time domain information of search space set 0 can be included.

One search space set can correspond to one CORESET, and one CORESET can correspond to one or more search space sets. For example, a CORESET frequency domain parameter and time domain interval parameter are recorded as parameter group 1, the configuration parameters of all search space sets corresponding to this CORESET are recorded as parameter group 2, and the search space set corresponding to this CORESET is 0 time domain The information is recorded as parameter group 3. According to the above-mentioned parameter group 1, parameter group 2, and parameter group 3, a group of time-frequency resources corresponding to the CORESET can be determined. The group of time-frequency resources corresponding to the CORESET includes the time-frequency resources determined according to the parameter group 1 and the parameter group 2 of the CORESET, and/or the time-frequency resources determined according to the parameter group 1 and the parameter group 3 of the CORESET.

For example, as shown in Figure 2, a certain CORESET corresponds to two search space sets, namely search space set 1 and search space set 2. According to the parameter group 1 of the CORESET and the corresponding parameter group 2 and parameter group 2, it can be determined that the group of time-frequency resources corresponding to the CORESET includes the time-frequency resources filled with diagonal lines in FIG. 2 and the squares in FIG. Fill in the time-frequency resources shown.

8) The terms "system" and "network" in the embodiments of this application can be used interchangeably. "Multiple" refers to two or more. In view of this, "multiple" may also be understood as "at least two" in the embodiments of the present application. "At least one" can be understood as one or more, for example, one, two or more. For example, including at least one means including one, two or more, and it does not limit which ones are included. For example, if at least one of A, B, and C is included, then A, B, C, A and B, A and C, B and C, or A and B and C are included. In the same way, the understanding of "at least one" and other descriptions is similar. "And/or" describes the association relationship of the associated objects, indicating that there can be three types of relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, and B exists alone. In addition, the character "/", unless otherwise specified, generally indicates that the associated objects before and after are in an "or" relationship.

Unless otherwise stated, the ordinal numbers such as “first” and “second” mentioned in the embodiments of the present application are used to distinguish multiple objects, and are not used to limit the order, timing, priority, or importance of multiple objects.

The technical solutions provided by the embodiments of the present application may be applied to 5G systems, or applied to future communication systems or other similar communication systems.

As shown in FIG. 3, it is a schematic diagram of a network architecture of a communication system to which an embodiment of this application is applicable. The communication system includes a network device 320 and a terminal device 330. Optionally, the communication system may further include a network device 310.

Among them, the network device 320 may be an access network device, such as a base station, which is used to provide wireless access-related services for the terminal device 330 to implement physical layer functions, resource scheduling and wireless resource management, service quality management, wireless access control, and Functions such as mobility management. The terminal device 330 and the network device 320 realize two-way communication through an air interface. The network device 310 may be a core network device.

Although only one terminal device 330 is shown in FIG. 3, it should be understood that in practical applications, the network device 320 may provide services for multiple terminal devices 330, and the embodiment of the present application does not limit the number of terminal devices in the communication system .

As shown in FIG. 4, it is a schematic flowchart corresponding to a data transmission method provided by an embodiment of this application. The method includes the following steps S401 to S405:

Step S401: The network device sends a downlink control channel, where the downlink control channel indicates the first time-frequency resource and the first service type corresponding to the data transmitted on the downlink data channel scheduled by the downlink control channel.

In the embodiment of this application, the downlink control channel may be a PDCCH, or an enhanced physical downlink control channel (EPDCCH), or may be other downlink control channels, which is not limited in this embodiment. The downlink data channel may be the PDSCH, or an enhanced physical downlink shared channel (EPDSCH), or other downlink data channels, which is not limited in the embodiment of the present application.

In this step, the network device sending the downlink control channel can be understood as the network device sending the downlink control information DCI to the terminal device on the downlink control channel. The downlink control channel indicates the first time-frequency resource and the first service type corresponding to the data transmitted on the downlink data channel scheduled by the downlink control channel can be understood as the DCI carried in the downlink control channel indicates the first time-frequency resource and the scheduled downlink The first data type of the data.

The DCI contains downlink data scheduling information, which is used to tell the terminal equipment what time-frequency resource location and what configuration parameters (configuration parameters include modulation and coding scheme (MCS) or redundancy version (redundancy version, for example). , RV)) etc. to receive and demodulate the downlink data. The first time-frequency resource may also be understood as the position of the time-frequency resource for receiving downlink data indicated in the DCI. In a possible design, the network device can indicate the time-frequency resource where the downlink data channel is located, that is, the first time-frequency resource, through the two fields of the frequency domain resource assignment field and the time domain resource assignment field in the DCI.

The first service type may be any service type (such as URLLC, eMBB, or mMTC) involved in the embodiments of this application. The network device can indicate the first service type according to one or more of the following methods:

The service type indication in the downlink control information DCI carried by the downlink control channel, the radio network temporary identification RNTI of the downlink control channel, the search space set SSset where the downlink control channel is located, the control resource set CORESET where the downlink control channel is located, and the downlink control channel bearer The format of the DCI, the subcarrier interval of the downlink data channel, the bandwidth part (BWP) where the downlink data channel is located, the mapping type of the downlink data channel, and the time domain duration of the downlink data channel.

Step S402: The terminal device receives the downlink control channel.

In this step, the terminal device receiving the downlink control channel can be understood as the terminal device receiving the DCI from the network device on the downlink control channel. In this way, the terminal device can determine the first time-frequency resource and the first service type indicated by the network device. The terminal device can determine the first service type according to one or more of the following information:

The service type indication in the downlink control information DCI carried by the downlink control channel, the radio network temporary identification RNTI of the downlink control channel, the search space set SSset where the downlink control channel is located, the control resource set CORESET where the downlink control channel is located, and the downlink control channel bearer The format of the DCI, the subcarrier interval of the downlink data channel, the BWP of the bandwidth of the downlink data channel, the mapping type of the downlink data channel, and the time domain duration of the downlink data channel.

Step S403: The terminal device determines a second time-frequency resource that is not used to transmit data of the first service type according to the first service type.

In the embodiments of this application, not all time-frequency resources can be used to transmit the downlink data channel. This part of the resources not used to transmit the downlink data channel may be called rate matching resources, or may have other names, and this application is not limited . The rate matching resource is not used to transmit the downlink data channel. It can have other uses. These uses may have higher priority than the downlink data channel, or these uses are periodic or semi-continuous, and the use of these resources cannot be dynamically stopped.

The network equipment can statically configure this part of the rate matching resources that are not used to transmit the downlink data channel, or use the rate matching indication information carried in the downlink control channel to indicate the time-frequency resources that are written to a certain rate matching pattern group rate match pattern group Whether it is a rate matching resource, that is, whether it can be used to transmit a downlink data channel, or both methods can also be used to jointly configure a rate matching resource that is not used to transmit a downlink data channel. Exemplarily, the rate matching indication information may be carried by the rate matching indicator field in the DCI, and the rate matching indication information may also be referred to as group indication information.

Exemplarily, this part of rate matching resources may also overlap with the first time-frequency resource (for example, partially overlap). That is, although the network device indicates that the time-frequency resource location where the downlink data channel is located is the first time-frequency resource, there may still be some time-frequency resources in the first time-frequency resource that are not used to transmit the downlink data channel.

Exemplarily, for different service types, the rate matching resources configured in this part that are not used to transmit downlink data channels may be different. In the embodiment of the present application, the downlink data channel scheduled by the downlink control channel needs to transmit data of the first service type. Therefore, the second time-frequency resource specifically refers to a rate matching resource that is not used to transmit data of the first service type. It is understandable that the second time-frequency resource may also be an empty set.

In a possible implementation manner, the second time-frequency resource may include a fourth time-frequency resource and/or a seventh time-frequency resource. Optionally, the second time-frequency resource may also include other time-frequency resources, which is not limited in the embodiment of the present application.

Exemplarily, the fourth time-frequency resource is the intersection of the first time-frequency resource and the fifth time-frequency resource, and the fifth time-frequency resource is determined by the terminal device according to the rate matching indication information carried in the downlink control channel and is not used for downlink transmission. The time-frequency resource of the data channel. The fifth time-frequency resource is part or all of the time-frequency resource of the sixth time-frequency resource. The sixth time-frequency resource is a candidate time-frequency resource determined according to the first set of rate matching information. The frequency resource may not be used to transmit data of the first service type, but may also be used to transmit data of the first service type. The first set of rate matching information is determined by the terminal device according to the first service type.

Exemplarily, the seventh time-frequency resource is the intersection of the first time-frequency resource and the eighth time-frequency resource, and the eighth time-frequency resource is determined according to the second set of rate matching information and is not used to transmit data of the first service type. Time-frequency resources, the second set of rate matching information is determined by the terminal device according to the first service type.

It is understandable that in this embodiment of the application, the first set of rate matching information and the third set of rate matching information determined according to the second service type are independently configured, and the second service type is another service type that is different from the first service type. Service type, the third set of rate matching information is used to determine candidate time-frequency resources not used to transmit data of the second service type. Here, the independent configuration of the first set of rate matching information and the third set of rate matching information means that the first set of rate matching information may have the same partial information as the third set of rate matching information (or be understood as having partial information different), or it may The two sets of rate matching information are completely different, and it is even possible that the two sets of rate matching information are completely the same. It can be understood that the rate matching resources corresponding to different service types that may not be used to transmit data of the service type are independently configured. The rate matching resources corresponding to the two types may be completely the same or completely different, or there may be some The time-frequency resources are the same (or understood as part of the time-frequency resources are different).

In the same way, the second set of rate matching information and the fourth set of rate matching information determined according to the second service type are also independently configured, and the fourth set of rate matching information is used to determine the time and frequency not used to transmit data of the second service type. Resources. That is, the second set of rate matching information may have the same partial information as the fourth set of rate matching information (or be understood as having partial information different), or the two sets of rate matching information may be completely different, or even the two sets of rate matching information may be completely the same .

In the embodiment of this application, the network device can be configured with several rate match patterns. The time-frequency resource corresponding to a rate match pattern can be a set of time-frequency resources corresponding to a bitmap pair bitmap pair, or a CORESET corresponding one. Group time-frequency resources. For a rate match pattern, the network device can write the time-frequency resource corresponding to the rate match pattern into one or two groups, such as rate match pattern group1 and/or rate match pattern group2. It is understandable that a group may include one or more rate match pattern time-frequency resources, that is, one or more rate match pattern time-frequency resources can be written into the same group.

The one or two groups mentioned in the embodiments of this application are only an example. Optionally, the maximum number of groups corresponding to a service type is K, and K is a positive integer. The value of K for different service types can be the same or different. On this basis, the network side can configure M groups for a service type. Where M is a positive integer less than or equal to K.

Optionally, the sixth time-frequency resource is the time-frequency resource written into the group in the rate match pattern related to the first service type, for example, it may include the time-frequency resource in rate match pattern group1 and/or rate match pattern group2 . The sixth time-frequency resource may be used to transmit data of the first service type, or may not be used to transmit data of the first service type, and it can be determined whether it is finally used for transmission under the indication of the rate matching indication information carried in the downlink control channel Data of the first business type. Therefore, the function of the rate matching indication information can be understood as whether to enable the candidate time-frequency resource in the group to transmit the downlink data channel. It is understandable that the rate matching indication information may separately indicate whether one or more groups transmit data of the first service type. The fifth time-frequency resource refers to the time-frequency resource included in the group that is indicated by the rate matching indication information not to be used to transmit data of the first service type. For example, if the rate matching indication information indicates that rate match pattern group1 is not used to transmit data of the first service type, then the fifth time-frequency resource includes the time-frequency resource corresponding to the rate match pattern group1. It can be understood that, under the indication of the rate matching indication information, the fifth time-frequency resource may include time-frequency resources corresponding to one or two groups.

The terminal device determining the sixth time-frequency resource according to the first set of rate matching information may specifically include: the terminal device may determine the sixth time-frequency resource according to the first data channel configuration information sent by the network device. The first data channel configuration information may include the configuration information of the rate match pattern group related to the first service type. According to the configuration information of the rate match pattern group related to the first service type, the terminal device can determine the configuration information of the first service type. Time-frequency resources in rate match pattern group1 and/or rate match pattern group2. In a possible design, the first data channel configuration information may be PDSCH-Config IE.

In a possible implementation manner, the network device may send a piece of first data channel configuration information to the terminal device, and the first data channel configuration information includes multiple groups of rate match pattern group configuration information, and a group of rate match pattern group configuration information. The configuration information corresponds to a service type and includes one or two rate match pattern groups configured for the service type. Here, the service types included in one data channel configuration information may be two or more, which is not limited by this application. In this way, after receiving the first data channel configuration information, the terminal device can determine a group of rate match pattern group configuration information related to the first service type from the first data channel configuration information according to the first service type. Thereby determining the sixth time-frequency resource.

In another possible implementation manner, the network device may send multiple pieces of first data channel configuration information to the terminal device, and one piece of first data channel configuration information corresponds to one service type, where the quantity of the first data channel configuration information may be Two or more than two, this application is not limited. For one of the first data channel configuration information, the first data channel configuration information includes a service type indication and configuration information of a rate match pattern group corresponding to the service type indicated by the service type. In this way, after the terminal device receives a plurality of first data channel configuration information, it can determine the first data channel configuration information related to the first service type from the plurality of first data channel configuration information according to the first service type, and then Determine the configuration information of the rate match pattern group related to the first service type, and determine the sixth time-frequency resource.

In another possible implementation manner, the network device may send a piece of first data channel configuration information to the terminal device, and the first data channel configuration information includes the configuration information of multiple rate match pattern groups, and one rate match pattern group The configuration information is set to be associated with a service type. For example, the configuration information of the rate match pattern group further includes a service type indication, which is used to indicate the service type associated with the rate match pattern group. A service type can be associated with the configuration information of one or two rate match pattern groups in the configuration information of multiple rate match pattern groups at the same time. For example, if the number of service types is N, then the first data channel configuration information may include 1 to 2N rate match pattern group configuration information. For another example, if the maximum number of groups corresponding to a service type is Tn, then the first data channel configuration information may include 1 to sum (T1, T2,..., TN) rate match pattern group configuration information, where sum( T1, T2,..., TN) represent the sum of T1, T2 to TN, and Tn can be the same or different for different service types. Using this implementation method can achieve the effect of configuring the rate match pattern group according to the service type. In this way, after receiving the first data channel configuration information, the terminal device can determine the rate match pattern group configuration information associated with the first service type from the first data channel configuration information according to the first service type, thereby determining the first service type. Six time-frequency resources.

The eighth time-frequency resource is the time-frequency resource corresponding to the rate match pattern related to the first service type and the time-frequency resource corresponding to CORESET that is not written into the group in the union. It includes the time-frequency resource corresponding to the rate match pattern. Frequency resources are not configured into the rate match pattern group of time-frequency resources, and the time-frequency resources corresponding to CORESET are not configured into rate match pattern time-frequency resources. In the embodiment of the present application, the eighth time-frequency resource is not used to transmit the downlink data channel of the first service type. It can also be understood that the eighth time-frequency resource is the time-frequency resource remaining after the sixth time-frequency resource is removed from the union of the ninth time-frequency resource and the tenth time-frequency resource, where the ninth time-frequency resource refers to the above and The resources corresponding to several rate match patterns related to the first service type. The tenth time-frequency resource refers to the resources corresponding to several CORESETs, and the ninth time-frequency resource and the tenth time-frequency resource may have partially overlapping time-frequency resources. This partially overlapping time-frequency resource is the time-frequency resource corresponding to the CORESET written in the group.

The terminal device determining the eighth time-frequency resource according to the second set of rate matching information may specifically include: the terminal device determining the ninth time-frequency resource according to the second data channel configuration information, determining the tenth time-frequency resource according to the control channel configuration information, and further according to the foregoing The relationship between the ninth time-frequency resource, the tenth time-frequency resource, and the sixth time-frequency resource is the eighth time-frequency resource.

Optionally, the terminal device may determine the ninth time-frequency resource according to the second data channel configuration information sent by the network device. The second data channel configuration information includes the rate match pattern configuration information related to the first service type, such as rateMatchPatternToAddModList , RateMatchPatternToReleaseModList information. According to the rateMatchPatternToAddModList and rateMatchPatternToReleaseModList information, the terminal device can determine the time-frequency resource corresponding to the rate match pattern related to the first service type. In a possible design, the second data channel configuration information may include any one or more of PDSCH-Config IE, ServingCellConfig IE, and ServingCellConfigCommon IE, and the second data channel configuration information and the first data channel configuration information may Same or different, and this application does not specifically limit this.

In a possible implementation manner, the network device may send a piece of second data channel configuration information to the terminal device, and the second data channel configuration information may include multiple sets of rate match pattern configuration information, and a set of rate match pattern configurations The information corresponds to a service type and includes several rate match patterns configured for the service type. In this way, after receiving the second data channel configuration information, the terminal device can determine a set of rate match pattern configuration information related to the first service type according to the first service type, so as to determine the rate match related to the first service type The time-frequency resource corresponding to the pattern.

In another possible implementation manner, the network device may send multiple second data channel configuration information to the terminal device. One second data channel configuration information corresponds to one service type. Here, the quantity of the second data channel configuration information may be Two or more than two, this application is not limited. For one of the second data channel configuration information, the second data channel configuration information includes a service type indication, and configuration information of a rate match pattern corresponding to the service type indicated by the service type. In this way, after receiving multiple second data channel configuration information, the terminal device can determine the second data channel configuration information related to the first service type from the multiple second data channel configuration information according to the first service type, thereby Determine the time-frequency resource corresponding to the rate match pattern related to the first service type.

In another possible implementation manner, the network device may send a piece of second data channel configuration information to the terminal device, and the second data channel configuration information includes configuration information of multiple rate match patterns and configuration information of one rate match pattern. It is set to be associated with a service type. For example, the configuration information of the rate match pattern further includes a service type indicator, which is used to indicate the service type associated with the rate match pattern. In this way, after receiving the second data channel configuration information, the terminal device can determine the configuration information of the rate match pattern related to the first service type from the configuration information of the multiple rate match patterns according to the first service type, and then determine The ninth time-frequency resource. It should be understood that a rate match pattern here may be associated with one type of service, or may be associated with multiple types of services, which is not limited in this application.

The terminal device may determine the tenth time-frequency resource according to the control channel configuration information sent by the network device. The control channel configuration information includes CORESET configuration information and search space configuration information. According to the CORESET configuration information and search space configuration information, the terminal device can determine several time-frequency resources corresponding to CORESET, and one CORESET corresponds to a group of time-frequency resources. Here, the control channel configuration information may include any one or more of PDCCH-Config IE, PDCCH-ConfigCommon IE, and PDCCH-ConfigSIB1IE.

Based on the foregoing, the first set of rate matching information and the second set of rate matching information in the embodiments of this application may be the same, for example, both include the configuration information of the rate match pattern and the configuration information of the rate match pattern group related to the first service type. . Alternatively, the first set of rate matching information and the second set of rate matching information may also have part of the same information, for example, both include rate match pattern group information related to the first service type.

Exemplarily, the first group of rate matching information may include rate match pattern configuration information and rate match pattern group configuration information related to the first service type, including rateMatchPatternToAddModList information, rrateMatchPatternToReleaseModList information, rate match pattern group1, rate match pattern One or more of group2, and this information is selectively configured, that is, only part of it can be configured, or all of it can be configured. Further, the second set of rate matching information may be the same as the first set of rate matching information.

It is understandable that in this embodiment of the application, the first set of rate matching information and the second set of rate matching information may be sent by the network device to the terminal device through the same RRC signaling, or may be sent through different RRC signaling. For terminal equipment. For example, the first set of rate matching information and the second set of rate matching information may be included in the PDSCH-Config IE and sent to the terminal device, or the first set of rate matching information may be included in the PDSCH-Config IE and sent to the terminal device. The second set of rate matching information is included in the ServingCellConfig IE and sent to the terminal device.

In a possible design, in the embodiment of this application, the implementation methods of configuring the rate match pattern and rate match pattern group corresponding to each service type can be used in combination with each other, or the rate match pattern configuration can be performed only according to the service type, or only The rate match pattern group configuration is performed according to the service type, which is not specifically limited in this application.

Step S404: The network device sends the downlink data channel on a third time-frequency resource, where the third time-frequency resource is part or all of the first time-frequency resource, and the third time-frequency resource does not include the second time-frequency resource.

In this step, the network device sending the downlink data channel on the third time-frequency resource can be understood as the network device sending the downlink data to the terminal device on the downlink data channel, and the time-frequency resource occupied by the downlink data channel is the third time-frequency resource. Resources.

In the embodiment of the present application, the third time-frequency resource refers to the time-frequency resource used by the network device to transmit the downlink data channel of the first service type. The third time-frequency resource does not include the second time-frequency resource, and the second time-frequency resource refers to a time-frequency resource that is not used to transmit the downlink data channel of the first service type. Therefore, when the second time-frequency resource is an empty set, the third time-frequency resource may be the same as the first time-frequency resource; when the second time-frequency resource is not an empty set, the third time-frequency resource may be the first time-frequency resource A part of the resource may also be understood as the third time-frequency resource as a subset of the first time-frequency resource.

Step S405: The terminal device receives the downlink data channel on the third time-frequency resource.

In this step, the terminal device receiving the downlink data channel on the third time-frequency resource can be understood to mean that the terminal device receives the downlink data from the network device on the downlink data channel, and the time-frequency resource occupied by the downlink data channel is the third Time-frequency resources.

With the technical solution provided by the embodiment of the present application, the configuration of rate matching parameters can be performed according to the service type, thereby effectively improving resource utilization. For example, configure more rate match patterns in the rate match pattern group of the eMBB service, and configure fewer rate match patterns in the rate match pattern group of the URLLC service. These have lower priority than the URLLC service and higher priority than the eMBB service. The resources corresponding to other services of the eMBB service may be included in the rate match pattern group of the eMBB service, but not included in the rate match pattern group of the URLLC service. In this way, the number of rate match patterns in the rate match pattern group of the URLLC service can be reduced, and all the rate match patterns in the entire rate match pattern group cannot be used because one rate match pattern in a rate match pattern group cannot be used. The problem of reduced resource utilization efficiency.

It should be noted that the sequence of the above steps is only an example. The network device can also perform step S401 and step S404 at the same time to send the downlink control channel and the downlink data channel at the same time. Accordingly, the terminal device can also receive the downlink at the same time. Control channel and downlink data channel. It is worth noting that the simultaneous transmission or simultaneous reception mentioned here does not mean "simultaneous" in a strict time sense, but refers to the possibility of being within a certain length of time (for example, one or more orthogonal frequency division multiplexing (orthogonal frequency division multiplexing, OFDM) symbols, or one or more time slots) perform two operations of sending a downlink control channel and sending a downlink data channel, and the same is true for receiving a downlink control channel and a downlink data channel, and will not be repeated. In the embodiment of the present application, data transmission may include two operations: data sending and/or data receiving.

In this embodiment of the application, the terminal device may determine the rate match pattern group corresponding to the first service type in the following manner:

In the first possible implementation manner, the terminal device can determine the rate match pattern group corresponding to the first service type according to the priority indicator in the DCI, and the priority indicator is used to indicate that the scheduled downlink data channel corresponds to The priority of the uplink control channel may also reflect the priority of the first service type, and different priority indications may correspond to different rate match pattern groups. For example, the priority indicator may be used to indicate the priority of the physical uplink control channel (PUCCH) corresponding to the PDSCH, and the PUCCH is the uplink feedback channel corresponding to the scheduled PDSCH.

For example, the network equipment is configured with two rate match pattern groups and at least one DCI format. One set of rate match pattern group includes rateMatchPatternGroup1 and/or rateMatchPatternGroup2, and the other set of rate match pattern group includes rateMatchPatternGroup1ForDCIFormat1_2 and/or rateMatchPatternGroup2ForDCIFormat1_2, the format of the at least one DCI may include DCI format 1_1 and/or DCI format 1_2. In this way, after the terminal device receives the downlink control channel in step S402, it can determine the rate match pattern group corresponding to the first service type according to the priority indicator in the DCI carried in the downlink control channel, if the priority indicator is low Priority, that is, the first service type is low priority, then rateMatchPatternGroup1 and/or rateMatchPatternGroup2 can be used. If the priority indicator indicates high priority, that is, the first service type is high priority, then rateMatchPatternGroup1ForDCIFormat1_2 and/or rateMatchPatternGroup2ForDCIFormat1_2 can be used .

Optionally, when the network device only configures one DCI format, for example, when only DCI format 1_1 or DCI format 1_2 is configured, the terminal device can use this implementation method to determine the rate match pattern group corresponding to the first service type. .

In the second possible implementation manner, as described above, the format of the DCI carried in the downlink control channel can be used to indicate the first service type. Therefore, the terminal device can determine the first service type according to the format of the DCI carried in the downlink control channel. A rate match pattern group corresponding to a service type, where there is a corresponding relationship between the DCI format and the rate match pattern group configured by the network device. The corresponding relationship may be predefined or configured by the network device to the terminal device.

For example, the network equipment is configured with two sets of rate match pattern groups and two DCI formats. Among the two sets of rate match pattern groups, one of the rate match pattern groups includes rateMatchPatternGroup1 and/or rateMatchPatternGroup2, and the other set of rate match pattern groups Including rateMatchPatternGroup1ForDCIFormat1_2 and/or rateMatchPatternGroup2ForDCIFormat1_2, the two DCI formats are DCI format 1_1 and DCI format 1_2 respectively, and DCI format 1_1 corresponds to the first set of rate match pattern group (that is, rateMatchPatternGroup1 and/or rateMatchPatternGroup1 and/or rateMatchPatternGroup1 and/or second rateMatchPattern) Set the rate match pattern group (that is, rateMatchPatternGroup1ForDCIFormat1_2 and/or rateMatchPatternGroup2ForDCIFormat1_2) to correspond. In this way, after receiving the downlink control channel in step S402, the terminal device can determine the rate match pattern group corresponding to the first service type according to the format of the DCI carried by the downlink control channel. If the DCI format is DCI format 1_1, use rateMatchPatternGroup1 And/or rateMatchPatternGroup2, if the DCI format is DCI format 1_2, use rateMatchPatternGroup1ForDCIFormat1_2 and/or rateMatchPatternGroup2ForDCIFormat1_2.

Optionally, when the network device is configured with two DCI formats, for example, when DCI format 1_1 and DCI format 1_2 are configured, the terminal device can use this implementation method to determine the rate match pattern group corresponding to the first service type. .

Optionally, the DCI carried in the downlink control channel may also include a priority indicator. The priority indicator is used to indicate the priority of the uplink control channel corresponding to the scheduled downlink data channel, and may also reflect the first service. The priority of the type. For the specific implementation manner of the priority indication, refer to the description in the first implementation manner, which is not repeated here.

It should be noted that the terminal device can select the first possible implementation method or the second possible implementation method according to a certain predefined or configured rule by the network device to determine the rate match pattern group corresponding to the first service type For example, when the network device is configured with only one DCI format, the terminal device chooses to use the first possible implementation, and when the network device is configured with two DCI formats, the terminal device chooses to use the second possible implementation .

Alternatively, the terminal device can also select one of the above two implementations according to the instructions of the network device to determine the rate match pattern group corresponding to the first service type. For example, the network device can send an instruction message to the terminal device. The information is used to indicate the use of one of the above two possible implementation manners, and the terminal device can use the implementation manner indicated by the network device to determine the rate match pattern group corresponding to the first service type.

The embodiments of the present application also provide a communication device. The communication device can be used as a terminal device to implement the function of the terminal device in any of the foregoing method embodiments, or it can be used as a network device to implement any of the foregoing method embodiments. Involving the functions of network devices. FIG. 5 is a schematic structural diagram of a communication device provided by an embodiment of the application. As shown in FIG. 5, the communication device includes: a transceiver module 510 and a processing module 520.

When the communication device is used as a terminal device to perform the method embodiment shown in FIG. 4, the transceiver module 510 is used to perform operations such as receiving the downlink control channel and receiving the downlink data channel on the third time-frequency resource; the processing module 520 uses To perform an operation of determining a second time-frequency resource not used to transmit data of the first service type according to the first service type. When the communication device is used as a network device to perform the method embodiment shown in FIG. 4, the transceiver module 510 is configured to perform operations such as sending a downlink control channel and sending a downlink data channel on the third time-frequency resource; a processing module 520, Used to perform operations such as configuring the first set of rate matching information and the second set of rate matching information.

It should be understood that the communication device provided in the embodiments of the present application may be a complete device such as a terminal device or a network device, or may be a component in the device or a chip inside the device, etc. The processing module 520 involved in the communication device may be composed of The processor or processor-related circuit components are implemented, and the transceiver module 510 may be implemented by a transceiver or transceiver-related circuit components.

It should be noted that the communication device 500 provided in the embodiment of the present application may correspond to a terminal device or a network device that executes the data transmission methods S401 to S405 provided in the embodiment of the present application, and the operation and/or function of each module in the communication device In order to realize the corresponding process of the method shown in FIG. 4, for the sake of brevity, details are not repeated here.

FIG. 6 is another schematic structural diagram of the communication device provided in the embodiment of the application. As shown in FIG. 6, the communication device is specifically a terminal device. It is easy to understand and easy to illustrate. In FIG. 6, the terminal device uses a mobile phone as an example. As shown in Figure 6, the terminal equipment includes a processor, a memory, a radio frequency circuit, an antenna, and an input and output device. The processor is mainly used to process the communication protocol and communication data, and to control the terminal device, execute the software program, and process the data of the software program. The memory is mainly used to store software programs and data. The radio frequency circuit is mainly used for the conversion of baseband signal and radio frequency signal and the processing of radio frequency signal. The antenna is mainly used to send and receive radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, and keyboards, are mainly used to receive data input by users and output data to users. It should be noted that some types of terminal devices may not have input and output devices.

When data needs to be sent, the processor performs baseband processing on the data to be sent, and outputs the baseband signal to the radio frequency circuit. The radio frequency circuit performs radio frequency processing on the baseband signal and sends the radio frequency signal to the outside in the form of electromagnetic waves through the antenna. When data is sent to the terminal device, the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, and the processor converts the baseband signal into data and processes the data. For ease of description, only one memory and processor are shown in FIG. 6. In actual terminal equipment products, there may be one or more processors and one or more memories. The memory may also be referred to as a storage medium or storage device. The memory may be set independently of the processor, or may be integrated with the processor, which is not limited in the embodiment of the present application.

In the embodiments of the present application, the antenna and radio frequency circuit with the transceiving function can be regarded as the transceiving unit of the terminal device, and the processor with the processing function can be regarded as the processing unit of the terminal device. As shown in FIG. 6, the terminal device includes a transceiver unit 610 and a processing unit 620. The transceiver unit may also be referred to as a transceiver, a transceiver, a transceiver, and so on. The processing unit may also be called a processor, a processing board, a processing module, a processing device, and so on. Optionally, the device for implementing the receiving function in the transceiver unit 610 can be regarded as the receiving unit, and the device for implementing the sending function in the transceiver unit 610 can be regarded as the sending unit, that is, the transceiver unit 610 includes a receiving unit and a sending unit. The transceiver unit may sometimes be called a transceiver, a transceiver, or a transceiver circuit. The receiving unit may sometimes be called a receiver, receiver, or receiving circuit. The transmitting unit may sometimes be called a transmitter, a transmitter, or a transmitting circuit. It should be understood that the transceiving unit 610 is configured to perform sending and receiving operations on the terminal device side in the foregoing method embodiment, and the processing unit 620 is configured to perform other operations on the terminal device in the foregoing method embodiment except for the transceiving operation.

FIG. 7 is a schematic diagram of another structure of a communication device provided in an embodiment of this application. As shown in FIG. 7, the communication device is specifically a kind of network equipment, such as a base station. The network equipment includes: one or more radio frequency units, such as a remote radio unit (RRU) 701 and one or more baseband units (BBU) (also known as digital units, digital units, DU) )702. The RRU 701 may be called a transceiver unit, a transceiver, a transceiver circuit, or a transceiver, etc., and it may include at least one antenna 7011 and a radio frequency unit 7012. The RRU 701 part is mainly used for receiving and sending radio frequency signals and converting radio frequency signals and baseband signals. The part 702 of the BBU is mainly used to perform baseband processing and control the base station. The RRU 701 and the BBU 702 may be physically set together, or may be physically separated, that is, a distributed base station.

The BBU 702 is the control center of the base station, which may also be called a processing unit, and is mainly used to complete baseband processing functions, such as channel coding, multiplexing, modulation, and spreading. For example, the BBU (processing unit) 702 may be used to control the base station to execute the operation procedure of the network device in the foregoing method embodiment.

In an example, the BBU 702 may be composed of one or more single boards, and multiple single boards may jointly support a radio access network with a single access indication (such as an LTE network), or support different access standards. Wireless access network (such as LTE network, 5G network or other networks). The BBU 702 further includes a memory 7021 and a processor 7022, and the memory 7021 is used to store necessary instructions and data. The processor 7022 is used to control the base station to perform necessary actions, for example, to control the base station to perform the sending operation in the foregoing method embodiment. The memory 7021 and the processor 7022 may serve one or more single boards. In other words, the memory and the processor can be set separately on each board. It can also be that multiple boards share the same memory and processor. In addition, necessary circuits can be provided on each board.

An embodiment of the present application also provides a chip system, including: a processor, the processor is coupled with a memory, the memory is used to store a program or instruction, when the program or instruction is executed by the processor, the The chip system implements any one of the possible design methods of the foregoing first aspect, or implements any of the foregoing second aspect of the possible design methods.

The embodiment of the present application also provides a computer-readable storage medium, in which computer-readable instructions are stored. When the computer reads and executes the computer-readable instructions, the computer is caused to execute any of the above-mentioned first aspects. A possible design method, or implement any one of the possible design methods in the second aspect described above.

The embodiments of the present application also provide a computer program product. When the computer reads and executes the computer program product, the computer executes any of the possible design methods in the first aspect, or executes the method in the second aspect. Any possible design method.

It should be understood that the processor mentioned in the embodiments of this application may be a central processing unit (CPU), or may be other general-purpose processors, digital signal processors (DSP), or application specific integrated circuits ( application specific integrated circuit (ASIC), ready-made programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.

It should also be understood that the memory mentioned in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. Among them, the non-volatile memory can be read-only memory (ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), and electrically available Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory. The volatile memory may be random access memory (RAM), which is used as an external cache. By way of exemplary but not restrictive description, many forms of RAM are available, such as static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (synchlink DRAM, SLDRAM) ) And direct memory bus random access memory (direct rambus RAM, DR RAM).

It should be noted that when the processor is a general-purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic device, or discrete hardware component, the memory (storage module) is integrated in the processor.

It should be noted that the memories described herein are intended to include, but are not limited to, these and any other suitable types of memories.

It should be understood that in the various embodiments of the present application, the size of the sequence numbers of the above-mentioned processes does not mean the order of execution. The execution order of the processes should be determined by their functions and internal logic, and should not be used in the embodiments of the present invention. The implementation process constitutes any limitation.

A person of ordinary skill in the art may be aware that the units and algorithm steps of the examples described in combination with the embodiments disclosed herein can be implemented by electronic hardware or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that, for the convenience and conciseness of description, the specific working process of the above-described system, device, and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, device, and method may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or It can be integrated into another system, or some features can be ignored or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.

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

In addition, the functional units in the various embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.

If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on this understanding, the technical solution of this application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program code .

The above are only specific implementations of this application, but the protection scope of this application is not limited to this. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in this application. Should be covered within the scope of protection of this application. Therefore, the protection scope of this application shall be subject to the protection scope of the claims.

Claims (25)

A data transmission method, characterized in that the method includes: Receiving a downlink control channel, where the downlink control channel indicates a first time-frequency resource and a first service type corresponding to data transmitted on a downlink data channel scheduled by the downlink control channel; Determine, according to the first service type, a second time-frequency resource that is not used to transmit data of the first service type; The downlink data channel is received on a third time-frequency resource, the third time-frequency resource is part or all of the first time-frequency resource, and the third time-frequency resource does not include the second time-frequency resource Resources. The method according to claim 1, wherein the downlink control channel carries rate matching indication information; The second time-frequency resource includes a fourth time-frequency resource, the fourth time-frequency resource is an intersection of the first time-frequency resource and a fifth time-frequency resource, and the fifth time-frequency resource is based on the rate The time-frequency resource that is not used to transmit the downlink data channel determined by the matching indication information, the fifth time-frequency resource is part or all of the time-frequency resource of the sixth time-frequency resource, and the sixth time-frequency resource is based on the first Candidate time-frequency resources that are not used to transmit data of the first service type determined by the group rate matching information, and the first group rate matching information is determined according to the first service type. The method according to claim 1 or 2, wherein the second time-frequency resource further comprises a seventh time-frequency resource, and the seventh time-frequency resource is the first time-frequency resource and the eighth time-frequency resource. The intersection of resources, the eighth time-frequency resource is a time-frequency resource determined according to a second set of rate matching information that is not used to transmit data of the first service type, and the second set of rate matching information is based on the first set of rate matching information. A business type is determined. The method according to any one of claims 1 to 3, wherein the first set of rate matching information and a third set of rate matching information determined according to the second service type are independently configured, and the third set of rate matching information is independently configured The group rate matching information is used to determine candidate time-frequency resources that are not used to transmit data of the second service type; and/or, The second set of rate matching information and the fourth set of rate matching information determined according to the second service type are independently configured, and the fourth set of rate matching information is used to determine the data not used to transmit the second service type Time-frequency resources. The method according to any one of claims 1 to 4, characterized in that the first service type is determined by one or more of the following information: The service type indication in the downlink control information DCI carried by the downlink control channel, the radio network temporary identifier RNTI of the downlink control channel, the search space set where the downlink control channel is located, and the control resource set where the downlink control channel is located CORESET, the format of the DCI carried by the downlink control channel, the subcarrier spacing of the downlink data channel, the bandwidth part BWP where the downlink data channel is located, the mapping type of the downlink data channel, and the time of the downlink data channel Domain duration. A data transmission method, characterized in that the method includes: Sending a downlink control channel, where the downlink control channel indicates the first time-frequency resource and the first service type corresponding to the data transmitted on the downlink data channel scheduled by the downlink control channel; Sending the downlink data channel on a third time-frequency resource, the third time-frequency resource is part or all of the first time-frequency resource, and the third time-frequency resource does not include the second time-frequency resource, The second time-frequency resource is a time-frequency resource that is determined according to the first service type and is not used to transmit data of the first service type. The method according to claim 6, wherein the second time-frequency resource comprises a fourth time-frequency resource, and the fourth time-frequency resource is an intersection of the first time-frequency resource and the fifth time-frequency resource , The fifth time-frequency resource is part or all of the time-frequency resource of the sixth time-frequency resource, and the sixth time-frequency resource is indicated by the first set of rate matching information and is not used to transmit data of the first service type A candidate time-frequency resource, where the rate matching indication information carried in the downlink control channel indicates that the fifth time-frequency resource is not used to transmit the downlink data channel; The method also includes: Send the first set of rate matching information, where the first set of rate matching information corresponds to a first service type. The method according to claim 6 or 7, wherein the second time-frequency resource further comprises a seventh time-frequency resource, and the seventh time-frequency resource is the first time-frequency resource and the eighth time-frequency resource. An intersection of resources, the eighth time-frequency resource is a time-frequency resource that is indicated by the second set of rate matching information and is not used to transmit data of the first service type; The method also includes: Send the second set of rate matching information, where the second set of rate matching information corresponds to the first service type. The method according to any one of claims 6 to 8, further comprising: Independently configure the first set of rate matching information and a third set of rate matching information corresponding to the second service type, where the third set of rate matching information is used to indicate candidates not used to transmit data of the second service type Time-frequency resources; and/or, The second set of rate matching information and the fourth set of rate matching information determined according to the second service type are independently configured, and the fourth set of rate matching information is used to determine when not used to transmit data of the second service type Frequency resources. The method according to any one of claims 6 to 9, wherein the first service type is indicated by one or more of the following information: The service type indication in the downlink control information DCI carried by the downlink control channel, the radio network temporary identifier RNTI of the downlink control channel, the search space set where the downlink control channel is located, and the control resource set where the downlink control channel is located CORESET, the format of the DCI carried by the downlink control channel, the subcarrier spacing of the downlink data channel, the bandwidth part BWP where the downlink data channel is located, the mapping type of the downlink data channel, and the time of the downlink data channel Domain duration. A communication device, characterized in that the device includes: A transceiver module, configured to receive a downlink control channel, where the downlink control channel indicates a first time-frequency resource and a first service type corresponding to data transmitted on a downlink data channel scheduled by the downlink control channel; A processing module, configured to determine, according to the first service type, a second time-frequency resource that is not used to transmit data of the first service type; The transceiver module is further configured to receive the downlink data channel on a third time-frequency resource, where the third time-frequency resource is a part or all of the first time-frequency resource, and the third time-frequency resource is Does not include the second time-frequency resource. The apparatus according to claim 11, wherein the downlink control channel carries rate matching indication information; The second time-frequency resource includes a fourth time-frequency resource, the fourth time-frequency resource is an intersection of the first time-frequency resource and a fifth time-frequency resource, and the fifth time-frequency resource is based on the rate The time-frequency resource that is not used to transmit the downlink data channel determined by the matching indication information, the fifth time-frequency resource is part or all of the time-frequency resource of the sixth time-frequency resource, and the sixth time-frequency resource is based on the first Candidate time-frequency resources that are not used to transmit data of the first service type determined by the group rate matching information, and the first group rate matching information is determined according to the first service type. The apparatus according to claim 11 or 12, wherein the second time-frequency resource further comprises a seventh time-frequency resource, and the seventh time-frequency resource is the first time-frequency resource and the eighth time-frequency resource. The intersection of resources, the eighth time-frequency resource is a time-frequency resource determined according to a second set of rate matching information that is not used to transmit data of the first service type, and the second set of rate matching information is based on the first set of rate matching information. A business type is determined. The apparatus according to any one of claims 11 to 13, wherein the first set of rate matching information and a third set of rate matching information determined according to a second service type are independently configured, and the third set of rate matching information is independently configured The group rate matching information is used to determine candidate time-frequency resources that are not used to transmit data of the second service type; and/or, The second set of rate matching information and the fourth set of rate matching information determined according to the second service type are independently configured, and the fourth set of rate matching information is used to determine the data not used to transmit the second service type Time-frequency resources. The apparatus according to any one of claims 11 to 14, wherein the processing module is specifically configured to determine the first service type through one or more of the following information: The service type indication in the downlink control information DCI carried by the downlink control channel, the radio network temporary identifier RNTI of the downlink control channel, the search space set where the downlink control channel is located, and the control resource set where the downlink control channel is located CORESET, the format of the DCI carried by the downlink control channel, the subcarrier spacing of the downlink data channel, the bandwidth part BWP where the downlink data channel is located, the mapping type of the downlink data channel, and the time of the downlink data channel Domain duration. A communication device, characterized in that the device includes: A transceiver module, configured to send a downlink control channel, where the downlink control channel indicates a first time-frequency resource and a first service type corresponding to data transmitted on a downlink data channel scheduled by the downlink control channel; The transceiver module is further configured to send the downlink data channel on a third time-frequency resource, where the third time-frequency resource is a part or all of the first time-frequency resource, and the third time-frequency resource is The second time-frequency resource is not included, and the second time-frequency resource is a time-frequency resource that is determined according to the first service type and is not used to transmit data of the first service type. The apparatus according to claim 16, wherein the second time-frequency resource comprises a fourth time-frequency resource, and the fourth time-frequency resource is an intersection of the first time-frequency resource and the fifth time-frequency resource , The fifth time-frequency resource is part or all of the time-frequency resource of the sixth time-frequency resource, and the sixth time-frequency resource is indicated by the first set of rate matching information and is not used to transmit data of the first service type A candidate time-frequency resource, where the rate matching indication information carried in the downlink control channel indicates that the fifth time-frequency resource is not used to transmit the downlink data channel; The transceiver module is also used for: Send the first set of rate matching information, where the first set of rate matching information corresponds to a first service type. The apparatus according to claim 16 or 17, wherein the second time-frequency resource further comprises a seventh time-frequency resource, and the seventh time-frequency resource is the first time-frequency resource and the eighth time-frequency resource. An intersection of resources, the eighth time-frequency resource is a time-frequency resource that is indicated by the second set of rate matching information and is not used to transmit data of the first service type; The transceiver module is also used for: Send the second set of rate matching information, where the second set of rate matching information corresponds to the first service type. The device according to any one of claims 16 to 18, wherein the device further comprises a processing module, and the processing module is configured to: Independently configure the first set of rate matching information and a third set of rate matching information corresponding to the second service type, where the third set of rate matching information is used to indicate candidates not used to transmit data of the second service type Time-frequency resources; and/or, The second set of rate matching information and the fourth set of rate matching information determined according to the second service type are independently configured, and the fourth set of rate matching information is used to determine when not used to transmit data of the second service type Frequency resources. The apparatus according to any one of claims 16 to 19, wherein the processing module is specifically configured to indicate the first service type through one or more of the following information: The service type indication in the downlink control information DCI carried by the downlink control channel, the radio network temporary identifier RNTI of the downlink control channel, the search space set where the downlink control channel is located, and the control resource set where the downlink control channel is located CORESET, the format of the DCI carried by the downlink control channel, the subcarrier spacing of the downlink data channel, the bandwidth part BWP where the downlink data channel is located, the mapping type of the downlink data channel, and the time of the downlink data channel Domain duration. A communication device, characterized by comprising at least one processor, the at least one processor being coupled with at least one memory: The at least one processor is configured to execute a computer program or instruction stored in the at least one memory, so that the device executes the method according to any one of claims 1 to 5. A computer-readable storage medium, characterized in that a computer program or instruction is stored in the computer-readable storage medium, and when the computer reads and executes the computer program or instruction, the computer is caused to execute as claimed in claims 1 to 5. The method described in any one of. A communication device, characterized by comprising at least one processor, the at least one processor being coupled with at least one memory: The at least one processor is configured to execute a computer program or instruction stored in the at least one memory, so that the device executes the method according to any one of claims 6 to 10. A computer-readable storage medium, characterized in that a computer program or instruction is stored in the computer-readable storage medium, and when the computer reads and executes the computer program or instruction, the computer is caused to execute as claimed in claims 6 to 10 The method described in any one of. A communication device, characterized in that the device is used to execute the method according to any one of claims 1 to 5 or claims 6 to 10.

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