HK40007523B - Method for demodulating shared reference signal, terminal device, and network device - Google Patents

Description

Method, terminal device and network device for demodulating a shared reference signal

Technical Field

Embodiments of the present application relate to the field of communications, and more specifically, to a method, terminal device, and network device for demodulating a shared reference signal.

Background Art

In Long Term Evolution (LTE) systems, terminal devices can perform channel measurement or estimation based on reference signals sent by network devices. The length of the reference signal sequence is a key parameter of the reference signal. If the terminal device does not know the length of the reference signal sequence, it cannot demodulate the reference signal and, therefore, cannot estimate or measure the channel. In LTE systems, the length of the reference signal sequence is generally twice the system bandwidth. Terminal devices can obtain the system bandwidth through system messages and, based on the system bandwidth, can determine the length of the reference signal sequence.

In future 5G systems, since terminal devices may not know the system bandwidth, they cannot determine the length of the shared reference signal sequence in the same way as in LTE. Therefore, how to determine the length of the shared reference signal sequence in future 5G systems is a problem that needs to be solved.

Summary of the Invention

Embodiments of the present application provide a method, a terminal device, and a network device for demodulating a shared reference signal, so as to demodulate the shared reference signal.

In a first aspect, a method for demodulating a shared reference signal is provided, the method comprising: a terminal device receiving first indication information sent by a network device, the first indication information being used to indicate resource information of a target resource group allocated to the terminal device; the terminal device determining a length of a sequence of a shared reference signal based on the resource information of the target resource group, wherein the shared reference signal is a reference signal shared by multiple terminal devices, and the length of the sequence of the shared reference signal is used to demodulate the shared reference signal.

Therefore, in an embodiment of the present application, the terminal device can determine the length of the shared reference signal sequence based on the resource information of the target resource group sent by the network device, and then demodulate the shared reference signal to ultimately achieve channel estimation or channel measurement.

In combination with the first aspect, in certain implementations of the first aspect, the first indication information is used to indicate the resources included in the target resource group or the resource size of the resources included in the target resource group, and the terminal device determines the length of the sequence of the shared reference signal based on the resource information of the target resource group, including: the terminal device determines the length of the sequence of the shared reference signal based on the resource size of the target resource group determined by the resources included in the target resource group, or the resource size of the target resource group indicated by the first indication information.

In combination with the first aspect, in certain implementations of the first aspect, the terminal device determines the length of the sequence of the shared reference signal based on the resource size of the target resource group determined by the resources included in the target resource group, or the resource size of the target resource group indicated by the first indication information, including: the terminal device determines the resource size of the target resource group based on the resources included in the target resource group, or the resource size of the target resource group indicated by the first indication information, and determines the length of the sequence of the shared reference signal based on a first preset relationship between the resource size and the length of the sequence of the reference signal.

In combination with the first aspect, in certain implementations of the first aspect, the first indication information is used to indicate the resources contained in the target resource interval where the target resource group is located or the resource size of the resources contained in the target resource interval, and the terminal device determines the length of the sequence of the shared reference signal based on the resource information of the target resource group, including: the terminal device determines the length of the sequence of the shared reference signal based on the resource size of the target resource interval determined by the resources contained in the target resource interval, or the resource size of the target resource interval indicated by the first indication information.

In combination with the first aspect, in certain implementations of the first aspect, the terminal device determines the length of the sequence of the shared reference signal based on the resource size of the target resource interval determined by the resources contained in the target resource interval, or the resource size of the target resource interval indicated by the first indication information, including: the terminal device determines the resource size of the target resource interval based on the resources contained in the target resource interval, or the resource size of the target resource interval indicated by the first indication information, and determines the length of the sequence of the shared reference signal based on a second preset relationship between the resource size and the length of the reference signal sequence.

In combination with the first aspect, in certain implementations of the first aspect, the first indication information is specifically used to indicate the physical resource blocks PRBs included in the target resource group, or to indicate the number of PRBs included in the target resource group.

In combination with the first aspect, in certain implementations of the first aspect, the first indication information is specifically used to indicate the PRBs included in the target resource interval, or to indicate the number of PRBs included in the target resource interval.

In combination with the first aspect, in certain implementations of the first aspect, the first preset relationship indicates that the length of the reference signal sequence is N times the resource size, where N is an integer greater than or equal to 1.

In combination with the first aspect, in some implementations of the first aspect, N is an integer multiple of a first value, wherein the first value is a value pre-agreed upon by the terminal device and the network device.

In combination with the first aspect, in certain implementations of the first aspect, the second preset relationship indicates that the length of the reference signal sequence is M times the resource size, where M is an integer greater than or equal to 1.

In combination with the first aspect, in some implementations of the first aspect, M is an integer multiple of a second value, wherein the second value is a value pre-agreed upon by the terminal device and the network device.

In combination with the first aspect, in certain implementations of the first aspect, before the terminal device receives the first indication information sent by the network device, the method further includes: the terminal device receives the second indication information sent by the network device, the second indication information being used to indicate an initial working bandwidth allocated to the terminal device, the initial working bandwidth being smaller than the system bandwidth; the terminal device determines the length of the sequence of the shared reference signal based on the initial working bandwidth and a third preset relationship between the working bandwidth and the length of the sequence of the reference signal.

The third preset relationship may be used to indicate that the length of the reference signal sequence is L times the resource size, where L is an integer greater than or equal to 1. Furthermore, L may be a multiple of a third value pre-agreed between the terminal device and the network device.

According to a second aspect, a method for demodulating a shared reference signal is provided, the method comprising: a terminal device receiving first indication information sent by a network device; the terminal device determining a target sequence corresponding to the terminal device in a sequence of a shared reference signal based on the first indication information, wherein the shared reference signal is a reference signal shared by multiple terminal devices, and the target sequence is used to demodulate the target reference signal corresponding to the terminal device in the shared reference signal.

In an embodiment of the present application, the terminal device can determine the target sequence corresponding to the terminal device in the sequence of the shared reference signal through the notification information of the network device, and can estimate or measure the channel by demodulating the target reference signal corresponding to the target sequence.

In combination with the second aspect, in certain implementations of the second aspect, the first indication information is used to indicate the position information of the target sequence, and the terminal device determines the target sequence corresponding to the terminal device in the sequence of the shared reference signal based on the first indication information, including: the terminal device determines the target sequence in the sequence of the shared reference signal based on the position information of the target sequence and the length of the target sequence.

In combination with the second aspect, in certain implementations of the second aspect, the first indication information is specifically used to indicate a starting position of the target sequence in a sequence of a shared reference signal.

In combination with the second aspect, in certain implementations of the second aspect, the first indication information is used to indicate the resource information of the target resource group, and the terminal device determines the target sequence corresponding to the terminal device in the shared reference signal sequence based on the first indication information, including: the terminal device determines the position of the target sequence in the sequence of the shared reference signal based on the resource information of the target resource group; the terminal device determines the target sequence in the sequence of the shared reference signal based on the position of the target sequence in the sequence of the shared reference signal and the length of the target sequence.

In combination with the second aspect, in some implementations of the second aspect, the first indication information is specifically used to indicate the location of the resources of the target resource group in the system resources.

The system resources may be all time-frequency resources contained in the cell where the terminal device is located.

According to a third aspect, a method for demodulating a shared reference signal is provided, the method comprising: a network device determining first indication information, the first indication information being used to indicate resource information of a target resource group allocated to the terminal device; the network device sending the first indication information to the terminal device so that the terminal device determines the resource information of the target resource group based on the first indication information, and determines the length of a sequence of a shared reference signal based on the resource information of the target resource group, wherein the shared reference signal is a reference signal shared by multiple terminal devices, and the length of the sequence of the shared reference signal is used to demodulate the shared reference signal.

In combination with the third aspect, in certain implementations of the third aspect, the first indication information is used to indicate the resources included in the target resource group or the resource size of the resources included in the target resource group.

In combination with the third aspect, in certain implementations of the third aspect, the first indication information is used to indicate the resources included in the target resource interval where the target resource group is located or the resource size of the resources included in the target resource interval.

In combination with the third aspect, in certain implementations of the third aspect, the first indication information is specifically used to indicate the PRBs included in the target resource group, or to indicate the number of PRBs included in the target resource group.

In combination with the third aspect, in certain implementations of the third aspect, the first indication information is specifically used to indicate the PRBs included in the target resource interval, or to indicate the number of PRBs included in the target resource interval.

In combination with the third aspect, in certain implementations of the third aspect, before the network device sends the first indication information to the terminal device, the method also includes: the network device sends second indication information to the terminal device, and the second indication information is used to indicate the initial working bandwidth allocated to the terminal device, so that the terminal device determines the length of the sequence of the shared reference signal based on the initial working bandwidth and a second preset relationship between the working bandwidth and the length of the sequence of the reference signal, wherein the initial working bandwidth is smaller than the system bandwidth.

In a fourth aspect, a method for demodulating a shared reference signal is provided, the method comprising: a network device determines first indication information; the network device sends the first indication information to a terminal device, so that the terminal device determines a target sequence corresponding to the terminal device in a sequence of a shared reference signal according to the first indication information, wherein the shared reference signal is a reference signal shared by multiple terminal devices, and the target sequence is used to demodulate the target reference signal corresponding to the terminal device in the shared reference signal.

In combination with the fourth aspect, in certain implementations of the fourth aspect, the first indication information is used to indicate position information of the target sequence.

In combination with the fourth aspect, in certain implementations of the fourth aspect, the first indication information is specifically used to indicate a starting position of the target sequence in a sequence of a shared reference signal.

In combination with the fourth aspect, in certain implementations of the fourth aspect, the first indication information is used to indicate resource information of the target resource group.

In combination with the fourth aspect, in certain implementations of the fourth aspect, the first indication information is specifically used to indicate the location of the resources of the target resource group in the system resources.

In a fifth aspect, a terminal device is provided, comprising a module for executing the method in the above-mentioned first aspect or its various implementations.

In a sixth aspect, a terminal device is provided, comprising a module for executing the method in the above-mentioned second aspect or its various implementations.

In a seventh aspect, a network device is provided, comprising a module for executing the method in the third aspect or its various implementations.

In an eighth aspect, a network device is provided, comprising a module for executing the method in the fourth aspect or various implementations thereof.

In a ninth aspect, a terminal device is provided, comprising a transceiver and a processor, wherein the transceiver and the processor are configured to execute the method of the first aspect or various implementations thereof.

In a tenth aspect, a terminal device is provided, comprising a transceiver and a processor, wherein the transceiver and the processor are configured to execute the method in the above-mentioned second aspect or its various implementations.

In an eleventh aspect, a network device is provided, comprising a processor and a transceiver, wherein the processor and the transceiver are configured to execute the method in the third aspect or various implementations thereof.

In a twelfth aspect, a network device is provided, comprising a processor and a transceiver, wherein the processor and the transceiver are used to execute the method in the above-mentioned fourth aspect or its various implementations.

In a thirteenth aspect, a computer-readable medium is provided, wherein the computer-readable medium stores a program code for execution by a terminal device, wherein the program code includes instructions for executing the method in the first aspect and its various implementations.

In a fourteenth aspect, a computer-readable medium is provided, wherein the computer-readable medium stores a program code for execution by a terminal device, wherein the program code includes instructions for executing the method in the second aspect and its various implementations.

In a fifteenth aspect, a computer-readable medium is provided, wherein the computer-readable medium stores a program code for execution by a network device, wherein the program code includes instructions for executing the method in the third aspect and various implementations thereof.

In a sixteenth aspect, a computer-readable medium is provided, wherein the computer-readable medium stores a program code for execution by a network device, wherein the program code includes instructions for executing the method in the fourth aspect and various implementations thereof.

In the seventeenth aspect, a system chip is provided, which includes an input interface, an output interface, a processor and a memory. The processor is used to execute the code in the memory. When the code is executed, the processor can implement the method in the aforementioned first aspect and various implementation methods.

In the eighteenth aspect, a system chip is provided, which includes an input interface, an output interface, a processor and a memory. The processor is used to execute the code in the memory. When the code is executed, the processor can implement the methods in the aforementioned second aspect and various implementation methods.

In the nineteenth aspect, a system chip is provided, which includes an input interface, an output interface, a processor and a memory. The processor is used to execute the code in the memory. When the code is executed, the processor can implement the method in the aforementioned third aspect and various implementation methods.

In the twentieth aspect, a system chip is provided, which includes an input interface, an output interface, a processor and a memory. The processor is used to execute the code in the memory. When the code is executed, the processor can implement the method in the aforementioned fourth aspect and various implementation methods.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of a possible application scenario of an embodiment of the present application.

FIG2 is a schematic flowchart of a method for demodulating a shared reference signal according to an embodiment of the present application.

FIG3 is a schematic diagram of a target resource group according to an embodiment of the present application.

FIG4 is a schematic flowchart of a method for demodulating a shared reference signal according to an embodiment of the present application.

FIG5 is a schematic flowchart of a method for demodulating a shared reference signal according to an embodiment of the present application.

FIG6 is a schematic flowchart of a method for demodulating a shared reference signal according to an embodiment of the present application.

FIG7 is a schematic block diagram of a terminal device according to an embodiment of the present application.

FIG8 is a schematic block diagram of a terminal device according to an embodiment of the present application.

FIG9 is a schematic block diagram of a network device according to an embodiment of the present application.

FIG10 is a schematic block diagram of a network device according to an embodiment of the present application.

FIG11 is a schematic block diagram of a terminal device according to an embodiment of the present application.

FIG12 is a schematic block diagram of a terminal device according to an embodiment of the present application.

FIG13 is a schematic block diagram of a network device according to an embodiment of the present application.

FIG14 is a schematic block diagram of a network device according to an embodiment of the present application.

FIG15 is a schematic block diagram of a system chip according to an embodiment of the present application.

DETAILED DESCRIPTION

The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application.

It should be understood that the method for scheduling terminal equipment in the embodiment of the present application can be applied to various communication systems, such as: Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Universal Mobile Telecommunication System (UMTS) and other current communication systems, and can be particularly applied to the future fifth generation mobile communication technology (5G) system.

In particular, the technical solutions of the embodiments of the present application can be applied to various communication systems based on non-orthogonal multiple access technology, such as sparse code multiple access (SCMA) system, low density signature (LDS) system, etc. Of course, SCMA system and LDS system can also be called other names in the field of communication; further, the technical solutions of the embodiments of the present application can be applied to multi-carrier transmission systems using non-orthogonal multiple access technology, such as orthogonal frequency division multiplexing (OFDM), filter bank multi-carrier (FBMC), generalized frequency division multiplexing (GFDM), filtered orthogonal frequency division multiplexing (F-OFDM) system, etc.

In order to better understand the method, terminal device and network device for demodulating a shared reference signal in an embodiment of the present application, the following briefly introduces the possible application scenarios of the embodiment of the present application in conjunction with Figure 1.

Figure 1 shows a wireless communication system 100 used in an embodiment of the present application. The wireless communication system 100 may include a network device 110. The network device 110 may be a device that communicates with a terminal device. The network device 110 may provide communication coverage for a specific geographical area and may communicate with a terminal device (e.g., UE) located within the coverage area. Optionally, the network device 110 may be a base station (Base Transceiver Station, BTS) in a GSM system or a CDMA system, a base station (NodeB, NB) in a WCDMA system, an evolved base station (Evolutional Node B, eNB or eNodeB) in an LTE system, or a wireless controller in a cloud radio access network (Cloud Radio Access Network, CRAN), or the network device may be a relay station, an access point, a vehicle-mounted device, a wearable device, a network-side device in a future 5G network, or a network device in a future evolved public land mobile network (Public Land Mobile Network, PLMN), etc.

The wireless communication system 100 also includes at least one terminal device 120 located within the coverage area of the network device 110. The terminal device 120 can be mobile or fixed. Optionally, the terminal device 120 can refer to an access terminal, user equipment (UE), a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent, or a user device. The access terminal can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a future 5G network, or a terminal device in a future evolved PLMN, etc.

Optionally, the 5G system or network may also be referred to as a New Radio (NR) system or network.

It should be understood that Figure 1 only shows one network device and two terminal devices by way of example. Optionally, the wireless communication system 100 may include multiple network devices and each network device may include another number of terminal devices within its coverage area. This embodiment of the present application does not limit this.

It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and/or" is simply a description of an association between related objects, indicating that three possible relationships exist. For example, "A and/or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character "/" generally indicates that the related objects are in an "or" relationship.

FIG2 is a schematic flow chart of a method for demodulating a shared reference signal according to an embodiment of the present application. The method 200 of FIG2 includes:

210. The terminal device receives first indication information sent by the network device, where the first indication information is used to indicate resource information of a target resource group allocated to the terminal device.

The first indication information may be carried in a system message, a broadcast message or a Radio Resource Control (RRC) message.

Optionally, the bandwidth occupied by the target resource group is less than the system bandwidth, and the target resource group may be one resource group or multiple resource groups. As shown in FIG3 , the target resource group may include only resource group 1 or both resource group 1 and resource group 2. When the target resource group includes only resource group 1, all terminal devices in resource group 1 may perform channel estimation or channel measurement using the shared reference signal corresponding to the target resource group; and when the target resource group includes both resource group 1 and resource group 2, all terminal devices in resource group 1 and resource group 2 may perform channel estimation or channel measurement using the shared reference signal corresponding to the target resource group.

In addition, the resource group here may be composed of one or more resource blocks, and the resource block may be a physical resource block (PRB).

220. The terminal device determines the length of the sequence of the shared reference signal based on the resource information of the target resource group, wherein the shared reference signal is a reference signal shared by multiple terminal devices, and the length of the sequence of the shared reference signal is used to demodulate the shared reference signal.

It should be understood that before performing channel estimation or channel measurement, the terminal device needs to first determine the length of the shared reference signal sequence, and then demodulate the shared reference signal according to the length of the shared reference signal sequence, thereby achieving measurement or estimation of the channel.

In an embodiment of the present application, the terminal device can determine the length of the shared reference signal sequence based on the resource information of the target resource group sent by the network device, and then demodulate the shared reference signal to ultimately achieve channel estimation or channel measurement.

It should be understood that multiple terminal devices can share the above-mentioned shared reference signal and use the shared reference signal to perform channel estimation or channel measurement. The multiple terminal devices here can be terminal devices located in the same cell, terminal devices located in the same beam, or terminal devices located in the same group.

Alternatively, the length of the shared reference signal sequence can also be agreed upon in advance by the terminal device and the network device (for example, it can be agreed upon in advance in the communication protocol), so that the terminal device does not have to determine the length of the shared reference signal sequence based on the first indication information sent by the network device, but can directly determine the length of the shared reference signal sequence according to the pre-agreed agreement.

Optionally, the above-mentioned first indication information can be used to indicate the resources included in the target resource group or the resource size of the resources included in the target resource group. Then, the terminal device determines the length of the sequence of the shared reference signal based on the resource information of the target resource group, including: the terminal device determines the length of the sequence of the shared reference signal based on the resource size of the target resource group determined by the resources included in the target resource group, or the resource size of the target resource group indicated by the first indication information.

That is, if the first indication information directly indicates the resource size of the resources included in the target resource group, the terminal device can directly determine the length of the shared reference signal sequence based on the resource size of the target resource group. When the first indication information indicates the resources included in the target resource group (for example, the first indication information can indicate the index of the resources included in the target resource group), the terminal device can first determine the resource size of the target resource group based on the resources included in the target resource group, and then determine the length of the shared reference signal sequence based on the resource size of the target resource group.

Furthermore, the terminal device determines the length of the sequence of the shared reference signal based on the resource size of the target resource group determined by the resources included in the target resource group, or the resource size of the target resource group indicated by the first indication information, which can specifically include: the terminal device determines the resource size of the target resource group based on the resources included in the target resource group, or the resource size of the target resource group indicated by the first indication information, and determines the length of the sequence of the shared reference signal based on a first preset relationship between the resource size and the length of the sequence of the reference signal.

The above resource size can be expressed by the number of PRBs or the number of other resource blocks, and the embodiments of the present application do not limit this.

Optionally, the first indication information may be specifically used to indicate the PRBs included in the target resource group, or to indicate the number of PRBs included in the target resource group.

Specifically, for example, the first indication information can directly indicate that the target resource group contains 3 PRBs. In addition, the first indication information can also indicate that the target resource group contains PRBs numbered 1, 3 and 5. In this way, the terminal device can determine that the target resource group contains 3 PRBs based on the PRBs numbered 1, 3 and 5 contained in the target resource group.

Optionally, the first preset relationship may indicate that the length of the reference signal sequence is N times the resource size of the target resource group, where N is an integer greater than or equal to 1. For example, when the resource size of the target resource group is 3 PRBs, the length of the shared reference signal sequence may be 9 PRBs (in this case, N is 3).

Furthermore, the value of N can be an integer multiple of a first value, where the first value is a value pre-agreed upon by the terminal device and the network device, or a value pre-agreed upon in the communication protocol. That is, although the value range of N is wide, considering certain special requirements during the communication process, the value of N needs to be an integer multiple of certain values. For example, N can be a multiple of 4, 8, or other values.

Optionally, the above-mentioned first indication information can also be used to indicate the resources contained in the target resource interval where the target resource group is located or the resource size of the resources contained in the target resource interval. At this time, the terminal device determines the length of the sequence of the shared reference signal based on the resource information of the target resource group, including: the terminal device determines the length of the sequence of the shared reference signal based on the resource size of the target resource interval determined by the resources contained in the target resource interval, or the resource size of the target resource interval indicated by the first indication information.

It should be understood that the above-mentioned target resource interval can be a continuous resource interval between the largest-numbered PRB and the smallest-numbered PRB in the target resource group, and the target resource interval includes the largest-numbered PRB and the smallest-numbered PRB. For example, if the target resource group contains three PRBs numbered 1, 3, and 5, then the target resource interval includes five PRBs numbered 1-5, of which PRBs numbered 2 and 4 are PRBs belonging to resource groups other than the target resource group.

Taking Figure 2 as an example, if the target resource group includes resource group 1 and resource group 2, and resource group 2 includes PRBs numbered 1-3, resource group 1 includes PRBs numbered 8-10, and there are also PRBs numbered 4-7 between resource group 1 and resource group 2, then the target resource interval includes ten PRBs numbered 1-10, while the target resource group only includes six PRBs numbered 1-3 and 8-10.

Specifically, if the first indication information directly indicates the resource size of the resources included in the target resource interval, the terminal device can directly determine the length of the shared reference signal sequence based on the resource size of the target resource interval. When the first indication information indicates the resources included in the target resource interval (for example, it can indicate the index of the resources included in the target resource interval), the terminal device can first determine the resource size of the target resource interval based on the resources included in the target resource interval, and then determine the length of the shared reference signal sequence based on the resource size of the target resource interval.

Furthermore, the terminal device determines the length of the sequence of the shared reference signal based on the resource size of the target resource interval determined by the resources contained in the target resource interval, or the resource size of the target resource interval indicated by the first indication information, which can specifically include: the terminal device determines the resource size of the target resource interval based on the resources contained in the target resource interval, or the resource size of the target resource interval indicated by the first indication information, and determines the length of the sequence of the shared reference signal based on a second preset relationship between the resource size and the length of the sequence of the reference signal.

Optionally, the first indication information may be specifically used to indicate the PRBs included in the target resource interval, or to indicate the number of PRBs included in the target resource interval.

Generally speaking, the number of PRBs contained in the target resource interval is greater than the number of PRBs contained in the target resource group. In this way, the length of the shared reference signal sequence determined by the terminal device based on the resource size of the target resource interval may be longer than the length of the shared reference signal sequence determined based on the resource size of the target resource group, which facilitates the terminal device to perform channel estimation or channel measurement based on the shared reference signal.

The second preset relationship may be similar to the first preset relationship, and the second preset relationship may indicate that the length of the shared reference signal sequence is M times the resource size of the target resource interval, where M is an integer greater than or equal to 1. For example, when the resource size of the target resource interval is 3 PRBs, the length of the shared reference signal sequence may be 12 PRBs (in this case, M is 4).

Furthermore, the value of M can be an integer multiple of a second value, where the second value is a value pre-agreed upon by the terminal device and the network device, or a value pre-agreed upon in the communication protocol. That is, although the value range of M is wide, considering certain special requirements during the communication process, the value of M needs to be an integer multiple of certain values. For example, M can be a multiple of 3, 9, or other values.

It should be understood that the embodiments of the present application do not limit the values of N and M, nor do they limit the relationship between the first value and the second value.

Optionally, as an embodiment, before the terminal device receives the first indication information sent by the network device, the method of Figure 2 also includes: the terminal device receives the second indication information sent by the network device, wherein the second indication information is used to indicate the initial working bandwidth allocated to the terminal device, and the initial working bandwidth is smaller than the system bandwidth; the terminal device determines the length of the sequence of the shared reference signal based on the initial working bandwidth and a third preset relationship between the working bandwidth and the length of the sequence of the reference signal.

When a terminal device initially accesses the network, the network device may not yet have allocated a resource group to it. In this case, the network device first allocates an initial operating bandwidth to the terminal device within the system bandwidth. To enable the terminal device to perform channel estimation or channel measurement during initial network access, the network device notifies the terminal device of the initial operating bandwidth through indication information. This allows the terminal device to determine the length of the shared reference signal sequence based on the initial operating bandwidth and the corresponding relationship between the initial operating bandwidth and the length of the shared reference signal sequence, thereby enabling channel estimation or channel measurement during initial network access.

It should be understood that in an embodiment of the present application, the second indication information sent by the network device received by the terminal device and the first indication information sent by the network device received by the terminal device can be independent of each other, that is, the terminal device can finally determine the length of the sequence of the shared reference signal based on the resource information obtained from the first indication information alone, or can determine the length of the sequence of the shared reference signal based on the initial working bandwidth determined by the second indication information alone. Alternatively, the terminal device can also determine the length of the sequence of the shared reference signal based on the initial working bandwidth determined by the second indication information when initially accessing the system, and can then re-determine the length of the sequence of the shared reference signal based on the resource information obtained from the received first indication information.

Optionally, the above-mentioned third preset relationship may be similar to the first preset relationship or the second preset relationship, that is, the third preset relationship may indicate that the length of the reference signal sequence is a multiple of the initial working bandwidth, and the multiple may be an integer greater than 1, and further may be a multiple of some special values (such as 4 or 8, etc.) pre-agreed by certain network devices and terminal devices.

It should be understood that the above-mentioned second indication information can also be carried in a system message, a broadcast message or an RRC message.

FIG4 is a schematic flow chart of a method for demodulating a shared reference signal according to an embodiment of the present application. The method 400 of FIG4 includes:

410. The terminal device receives first indication information sent by the network device.

The first indication information here may be carried in a system message, a broadcast message or an RRC message.

420. The terminal device determines a target sequence corresponding to the terminal device in a sequence of a shared reference signal according to the first indication information, wherein the shared reference signal is a reference signal shared by multiple terminal devices, and the target sequence is used to demodulate the target reference signal corresponding to the terminal device in the shared reference signal.

In an embodiment of the present application, the terminal device can determine the target sequence corresponding to the terminal device in the sequence of the shared reference signal through the notification information of the network device, and can estimate or measure the channel by demodulating the target reference signal corresponding to the target sequence.

The length of the above-mentioned shared reference signal sequence can be determined according to the system bandwidth, that is, all terminal devices interacting with the network device can estimate or measure the channel based on the shared reference signal, but when the sequence of the shared reference signal is too long, the terminal device can only measure or estimate the channel by demodulating a section of the shared reference signal sequence, which can simplify the complexity of the terminal device estimating or measuring the channel based on the shared reference signal.

Optionally, the above-mentioned first indication information can be used to indicate the position information of the target sequence. At this time, the terminal device determines the target sequence corresponding to the terminal device in the sequence of the shared reference signal according to the first indication information, which may include: the terminal device determines the target sequence in the sequence of the shared reference signal according to the position information of the target sequence and the length of the target sequence.

Furthermore, the first indication information may be used to specifically indicate the starting position of the target sequence in the shared reference signal sequence. Thus, the terminal device can determine the starting position of the target sequence in the shared reference signal sequence based on the first indication information, and then determine the target sequence in the shared reference signal sequence based on the length of the target sequence.

In addition to directly indicating the location information of the target sequence, the first indication information may also indirectly indicate the location of the target sequence by indicating resource information of the terminal device.

Optionally, the above-mentioned first indication information can be used to indicate resource information of the target resource group. In this case, the terminal device determines the target sequence corresponding to the terminal device in the sequence of the shared reference signal according to the first indication information, which may include: the terminal device determines the position of the target sequence in the sequence of the shared reference signal according to the resource information of the target resource group; the terminal device determines the target sequence in the sequence of the shared reference signal according to the position of the target sequence in the sequence of the shared reference signal and the length of the target sequence.

Optionally, the first indication information may further specifically indicate the location of the resources of the target resource group in the system resources. Specifically, the location of the resources of the target resource group in the system resources may be a starting location, an ending location, or other location information. The system resources here may be all time-frequency resources contained in the cell where the terminal device is located.

It should be understood that the resource position of the target resource group is related to the position of the target sequence. After obtaining the resource position of the target resource group, the terminal device can determine the position of the target sequence based on the correspondence between the resource position of the target resource group and the target sequence.

That is, the network device may directly indicate the starting position of the target sequence in the shared reference signal sequence through the indication information, or may indirectly or implicitly indicate the starting position of the target sequence in the shared reference signal sequence through the indication information.

It should be understood that in the method of Figure 2, the terminal device determines the length of the shared reference signal sequence based on the resource information of the allocated resource group, and then demodulates the shared reference signal based on the length of the shared reference signal sequence. In contrast, in the method of Figure 4, the terminal device does not need to determine the length of the shared reference signal sequence, but instead directly determines the position of the target sequence corresponding to the terminal device within the shared reference signal sequence, and then demodulates the shared reference signal based on the target sequence.

The above text combines Figures 2-4 to provide a detailed introduction to the method for demodulating the shared reference signal in an embodiment of the present application from the perspective of the terminal device. The following text combines Figures 5 and 6 to describe the method for demodulating the shared reference signal in an embodiment of the present application from the perspective of the network device.

It should be understood that the method for demodulating the shared reference signal in the embodiment of the present application described from the perspective of the network device corresponds to the method for demodulating the shared reference signal in the embodiment of the present application described from the perspective of the terminal device. For the sake of brevity, repeated descriptions are appropriately omitted.

FIG5 is a schematic flow chart of a method for demodulating a shared reference signal according to an embodiment of the present application. The method 500 of FIG5 includes:

510. The network device determines first indication information, where the first indication information is used to indicate resource information of a target resource group allocated to the terminal device.

520. The network device sends the first indication information to the terminal device so that the terminal device determines the resource information of the target resource group based on the first indication information, and determines the length of the sequence of the shared reference signal based on the resource information of the target resource group, wherein the shared reference signal is a reference signal shared by multiple terminal devices, and the length of the sequence of the shared reference signal is used to demodulate the shared reference signal.

In an embodiment of the present application, the network device can notify the terminal device of the resource information of the target resource group through indication information, so that the terminal device can determine the length of the shared reference signal sequence based on the resource information of the target resource group, and then demodulate the shared reference signal, and finally realize channel estimation or channel measurement.

Optionally, as an embodiment, the first indication information is specifically used to indicate the resources included in the target resource group or the resource size of the resources included in the target resource group.

Optionally, as an embodiment, the first indication information is specifically used to indicate the resources included in the target resource interval where the target resource group is located or the resource size of the resources included in the target resource interval.

Optionally, as an embodiment, the first indication information is specifically used to indicate the PRBs included in the target resource group, or to indicate the number of PRBs included in the target resource group.

Optionally, as an embodiment, the first indication information is specifically used to indicate the PRBs included in the target resource interval, or to indicate the number of PRBs included in the target resource interval.

Optionally, as an embodiment, before the network device sends the first indication information to the terminal device, the method further includes: the network device sends second indication information to the terminal device, the second indication information being used to indicate an initial working bandwidth allocated to the terminal device, so that the terminal device determines the length of the sequence of the shared reference signal based on the initial working bandwidth and a second preset relationship between the working bandwidth and the length of the sequence of the reference signal, wherein the initial working bandwidth is smaller than the system bandwidth.

FIG6 is a schematic flow chart of a method for demodulating a shared reference signal according to an embodiment of the present application. The method 600 of FIG6 includes:

610. The network device determines first indication information;

620. The network device sends the first indication information to the terminal device so that the terminal device determines the target sequence corresponding to the terminal device in the sequence of the shared reference signal according to the first indication information, wherein the shared reference signal is a reference signal shared by multiple terminal devices, and the target sequence is used to demodulate the target reference signal corresponding to the terminal device in the shared reference signal.

In an embodiment of the present application, the network device can indicate the target sequence corresponding to the terminal device through indication information, so that the terminal device can determine the target sequence and estimate or measure the channel by demodulating the target reference signal corresponding to the target sequence.

Optionally, as an embodiment, the first indication information is used to indicate position information of the target sequence.

Optionally, as an embodiment, the first indication information is specifically used to indicate a starting position of the target sequence in a sequence of a shared reference signal.

Optionally, as an embodiment, the first indication information is used to indicate resource information of the target resource group.

Optionally, as an embodiment, the first indication information is specifically used to indicate the location of the resources of the target resource group in the system resources.

The method for demodulating a shared reference signal according to an embodiment of the present application is described in detail above in conjunction with Figures 2 to 6 . The terminal device and network device according to an embodiment of the present application are described below in conjunction with Figures 7 to 14 . It should be understood that the terminal device and network device described in Figures 7 to 14 are capable of implementing each step of the method for demodulating a shared reference signal described in Figures 2 to 6 . For the sake of brevity, repeated descriptions are appropriately omitted.

FIG7 is a schematic block diagram of a terminal device according to an embodiment of the present application. The terminal device 700 in FIG7 includes:

A receiving module 710 is configured to receive first indication information sent by a network device, where the first indication information is used to indicate resource information of a target resource group allocated to the terminal device;

The determination module 720 is used to determine the length of the sequence of the shared reference signal based on the resource information of the target resource group, wherein the shared reference signal is a reference signal shared by multiple terminal devices, and the length of the sequence of the shared reference signal is used to demodulate the shared reference signal.

Optionally, as an embodiment, the first indication information is used to indicate the resources included in the target resource group or the resource size of the resources included in the target resource group, and the determination module 720 is specifically used to: determine the length of the sequence of the shared reference signal based on the resource size of the target resource group determined according to the resources included in the target resource group, or the resource size of the target resource group indicated by the first indication information.

Optionally, as an embodiment, the determination module 720 is specifically used to: determine the resource size of the target resource group based on the resources contained in the target resource group, or the resource size of the target resource group indicated by the first indication information, and determine the length of the sequence of the shared reference signal based on a first preset relationship between the resource size and the length of the sequence of the reference signal.

Optionally, as an embodiment, the first indication information is used to indicate the resources contained in the target resource interval where the target resource group is located or the resource size of the resources contained in the target resource interval, and the determination module 720 is specifically used to: determine the length of the sequence of the shared reference signal based on the resource size of the target resource interval determined according to the resources contained in the target resource interval, or the resource size of the target resource interval indicated by the first indication information.

Optionally, as an embodiment, the determination module 720 is specifically used to: determine the resource size of the target resource interval based on the resources contained in the target resource interval, or the resource size of the target resource interval indicated by the first indication information, and determine the length of the sequence of the shared reference signal based on a second preset relationship between the resource size and the length of the sequence of the reference signal.

Optionally, as an embodiment, the first indication information is specifically used to indicate the PRBs included in the target resource group, or to indicate the number of PRBs included in the target resource group.

Optionally, as an embodiment, the first indication information is specifically used to indicate the PRBs included in the target resource interval, or to indicate the number of PRBs included in the target resource interval.

Optionally, as an embodiment, the first preset relationship indicates that the length of the reference signal sequence is N times the resource size, where N is an integer greater than or equal to 1.

Optionally, as an embodiment, the N is an integer multiple of a first value, wherein the first value is a value pre-agreed upon by the terminal device and the network device.

Optionally, as an embodiment, the second preset relationship indicates that the length of the reference signal sequence is M times the resource size, where M is an integer greater than or equal to 1.

Optionally, as an embodiment, the M is an integer multiple of a second value, wherein the second value is a value pre-agreed upon by the terminal device and the network device.

Optionally, as an embodiment, before the receiving module receives the first indication information sent by the network device, the receiving module 710 is also used to receive the second indication information sent by the network device, and the second indication information is used to indicate the initial working bandwidth allocated to the terminal device, and the initial working bandwidth is smaller than the system bandwidth; the determination module 720 is specifically used to determine the length of the sequence of the shared reference signal based on the initial working bandwidth and a third preset relationship between the working bandwidth and the length of the sequence of the reference signal.

FIG8 is a schematic block diagram of a terminal device according to an embodiment of the present application. The terminal device 800 in FIG8 includes:

A receiving module 810 is configured to receive first indication information sent by a network device;

The determination module 820 is used to determine the target sequence corresponding to the terminal device in the sequence of the shared reference signal according to the first indication information, wherein the shared reference signal is a reference signal shared by multiple terminal devices, and the target sequence is used to demodulate the target reference signal corresponding to the terminal device in the shared reference signal.

Optionally, as an embodiment, the first indication information is used to indicate the position information of the target sequence, and the determination module 820 is specifically used to determine the target sequence in the sequence of the shared reference signal based on the position information of the target sequence and the length of the target sequence.

Optionally, as an embodiment, the first indication information is specifically used to indicate a starting position of the target sequence in a sequence of a shared reference signal.

Optionally, as an embodiment, the first indication information is used to indicate the resource information of the target resource group, and the determination module 820 is specifically used to: determine the position of the target sequence in the sequence of the shared reference signal based on the resource information of the target resource group; determine the target sequence in the sequence of the shared reference signal based on the position of the target sequence in the sequence of the shared reference signal and the length of the target sequence.

Optionally, as an embodiment, the first indication information is specifically used to indicate the location of the resources of the target resource group in the system resources.

FIG9 is a schematic block diagram of a network device according to an embodiment of the present application. The network device 900 in FIG9 includes:

A determining module 910 is configured to determine first indication information, where the first indication information is used to indicate resource information of a target resource group allocated to the terminal device;

The sending module 920 is used to send the first indication information to the terminal device, so that the terminal device determines the resource information of the target resource group based on the first indication information, and determines the length of the sequence of the shared reference signal based on the resource information of the target resource group, wherein the shared reference signal is a reference signal shared by multiple terminal devices, and the length of the sequence of the shared reference signal is used to demodulate the shared reference signal.

Optionally, as an embodiment, the first indication information is specifically used to indicate the resources included in the target resource group or the resource size of the resources included in the target resource group.

Optionally, as an embodiment, the first indication information is specifically used to indicate the resources included in the target resource interval where the target resource group is located or the resource size of the resources included in the target resource interval.

Optionally, as an embodiment, the first indication information is specifically used to indicate the PRBs included in the target resource group, or to indicate the number of PRBs included in the target resource group.

Optionally, as an embodiment, the first indication information is specifically used to indicate the PRBs included in the target resource interval, or to indicate the number of PRBs included in the target resource interval.

Optionally, as an embodiment, before the sending module 920 sends the first indication information to the terminal device, the sending module 920 is also used to send second indication information to the terminal device, and the second indication information is used to indicate the initial working bandwidth allocated to the terminal device, so that the terminal device determines the length of the sequence of the shared reference signal based on the initial working bandwidth and a second preset relationship between the working bandwidth and the length of the sequence of the reference signal, wherein the initial working bandwidth is smaller than the system bandwidth.

FIG10 is a schematic block diagram of a network device according to an embodiment of the present application. The network device 1000 in FIG10 includes:

Determining module 1010, configured to determine first indication information;

The sending module 1020 is used to send the first indication information to the terminal device so that the terminal device determines the target sequence corresponding to the terminal device in the sequence of the shared reference signal according to the first indication information, wherein the shared reference signal is a reference signal shared by multiple terminal devices, and the target sequence is used to demodulate the target reference signal corresponding to the terminal device in the shared reference signal.

Optionally, as an embodiment, the first indication information is used to indicate position information of the target sequence.

Optionally, as an embodiment, the first indication information is specifically used to indicate a starting position of the target sequence in a sequence of a shared reference signal.

Optionally, as an embodiment, the first indication information is used to indicate resource information of the target resource group.

Optionally, as an embodiment, the first indication information is specifically used to indicate the location of the resources of the target resource group in the system resources.

FIG11 is a schematic block diagram of a terminal device according to an embodiment of the present application. The terminal device 1100 in FIG11 includes a transceiver 1110 and a processor 1120 .

The transceiver 1110 is configured to receive first indication information sent by a network device, where the first indication information is used to indicate resource information of a target resource group allocated to the terminal device;

The processor 1120 is used to determine the length of a sequence of a shared reference signal based on resource information of the target resource group, wherein the shared reference signal is a reference signal shared by multiple terminal devices, and the length of the sequence of the shared reference signal is used to demodulate the shared reference signal.

Optionally, as an embodiment, the first indication information is used to indicate the resources included in the target resource group or the resource size of the resources included in the target resource group, and the processor 1120 is specifically used to: determine the length of the sequence of the shared reference signal based on the resource size of the target resource group determined according to the resources included in the target resource group, or the resource size of the target resource group indicated by the first indication information.

Optionally, as an embodiment, the processor 1120 is specifically used to: determine the resource size of the target resource group based on the resources contained in the target resource group, or the resource size of the target resource group indicated by the first indication information, and determine the length of the sequence of the shared reference signal based on a first preset relationship between the resource size and the length of the sequence of the reference signal.

Optionally, as an embodiment, the first indication information is used to indicate the resources contained in the target resource interval where the target resource group is located or the resource size of the resources contained in the target resource interval, and the processor 1120 is specifically used to: determine the length of the sequence of the shared reference signal based on the resource size of the target resource interval determined according to the resources contained in the target resource interval, or the resource size of the target resource interval indicated by the first indication information.

Optionally, as an embodiment, the processor 1120 is specifically used to: determine the resource size of the target resource interval based on the resources contained in the target resource interval, or the resource size of the target resource interval indicated by the first indication information, and determine the length of the sequence of the shared reference signal based on a second preset relationship between the resource size and the length of the sequence of the reference signal.

Optionally, as an embodiment, the first indication information is specifically used to indicate the PRBs included in the target resource group, or to indicate the number of PRBs included in the target resource group.

Optionally, as an embodiment, the first indication information is specifically used to indicate the PRBs included in the target resource interval, or to indicate the number of PRBs included in the target resource interval.

Optionally, as an embodiment, the first preset relationship indicates that the length of the reference signal sequence is N times the resource size, where N is an integer greater than or equal to 1.

Optionally, as an embodiment, the N is an integer multiple of a first value, wherein the first value is a value pre-agreed upon by the terminal device and the network device.

Optionally, as an embodiment, the second preset relationship indicates that the length of the reference signal sequence is M times the resource size, where M is an integer greater than or equal to 1.

Optionally, as an embodiment, the M is an integer multiple of a second value, wherein the second value is a value pre-agreed upon by the terminal device and the network device.

Optionally, as an embodiment, before the transceiver receives the first indication information sent by the network device, the transceiver 1110 is also used to receive the second indication information sent by the network device, the second indication information being used to indicate the initial working bandwidth allocated to the terminal device, the initial working bandwidth being smaller than the system bandwidth; the processor 1120 is specifically used to determine the length of the sequence of the shared reference signal based on the initial working bandwidth and a third preset relationship between the working bandwidth and the length of the sequence of the reference signal.

FIG12 is a schematic block diagram of a terminal device according to an embodiment of the present application. The terminal device 1200 in FIG12 includes a transceiver 1210 and a processor 1220 .

The transceiver 1210 is configured to receive first indication information sent by a network device;

The processor 1220 is used to determine a target sequence corresponding to the terminal device in a sequence of a shared reference signal according to the first indication information, wherein the shared reference signal is a reference signal shared by multiple terminal devices, and the target sequence is used to demodulate the target reference signal corresponding to the terminal device in the shared reference signal.

Optionally, as an embodiment, the first indication information is used to indicate position information of the target sequence, and the processor 1220 is specifically used to determine the target sequence in the sequence of the shared reference signal based on the position information of the target sequence and the length of the target sequence.

Optionally, as an embodiment, the first indication information is specifically used to indicate a starting position of the target sequence in a sequence of a shared reference signal.

Optionally, as an embodiment, the first indication information is used to indicate resource information of the target resource group, and the processor 1220 is specifically used to: determine the position of the target sequence in the sequence of the shared reference signal based on the resource information of the target resource group; determine the target sequence in the sequence of the shared reference signal based on the position of the target sequence in the sequence of the shared reference signal and the length of the target sequence.

Optionally, as an embodiment, the first indication information is specifically used to indicate the location of the resources of the target resource group in the system resources.

FIG13 is a schematic block diagram of a network device according to an embodiment of the present application. The network device 1300 in FIG13 includes a processor 1310 and a transceiver 1320 .

The processor 1310 is configured to determine first indication information, where the first indication information is used to indicate resource information of a target resource group allocated to the terminal device;

The transceiver 1320 is used to send the first indication information to the terminal device, so that the terminal device determines the resource information of the target resource group based on the first indication information, and determines the length of the sequence of the shared reference signal based on the resource information of the target resource group, wherein the shared reference signal is a reference signal shared by multiple terminal devices, and the length of the sequence of the shared reference signal is used to demodulate the shared reference signal.

Optionally, as an embodiment, the first indication information is specifically used to indicate the resources included in the target resource group or the resource size of the resources included in the target resource group.

Optionally, as an embodiment, the first indication information is specifically used to indicate the resources included in the target resource interval where the target resource group is located or the resource size of the resources included in the target resource interval.

Optionally, as an embodiment, the first indication information is specifically used to indicate the PRBs included in the target resource group, or to indicate the number of PRBs included in the target resource group.

Optionally, as an embodiment, the first indication information is specifically used to indicate the PRBs included in the target resource interval, or to indicate the number of PRBs included in the target resource interval.

Optionally, as an embodiment, before the transceiver 1320 sends the first indication information to the terminal device, the transceiver 1320 is also used to send second indication information to the terminal device, wherein the second indication information is used to indicate an initial working bandwidth allocated to the terminal device, so that the terminal device determines the length of the sequence of the shared reference signal based on the initial working bandwidth and a second preset relationship between the working bandwidth and the length of the sequence of the reference signal, wherein the initial working bandwidth is smaller than the system bandwidth.

FIG14 is a schematic block diagram of a network device according to an embodiment of the present application. The network device 1400 in FIG14 includes a processor 1410 and a transceiver 1420 .

The processor 1410 is configured to determine first indication information;

The transceiver 1420 is used to send the first indication information to the terminal device, so that the terminal device determines the target sequence corresponding to the terminal device in the sequence of the shared reference signal according to the first indication information, wherein the shared reference signal is a reference signal shared by multiple terminal devices, and the target sequence is used to demodulate the target reference signal corresponding to the terminal device in the shared reference signal.

Optionally, as an embodiment, the first indication information is used to indicate position information of the target sequence.

Optionally, as an embodiment, the first indication information is specifically used to indicate a starting position of the target sequence in a sequence of a shared reference signal.

Optionally, as an embodiment, the first indication information is used to indicate resource information of the target resource group.

Optionally, as an embodiment, the first indication information is specifically used to indicate the location of the resources of the target resource group in the system resources.

FIG15 is a schematic structural diagram of a system chip according to an embodiment of the present application. The system chip 1500 in FIG15 includes an input interface 1501 , an output interface 1502 , a processor 1503 , and a memory 1504 , which are connected via a bus 1505 . The processor 1503 is configured to execute code in the memory 1504 .

Optionally, when the code is executed, the processor 1503 implements the method executed by the terminal device in the method embodiment of the present application. For the sake of brevity, no further details are given here.

Optionally, when the code is executed, the processor 1503 implements the method executed by the network device in the method embodiment. For the sake of brevity, no further details are given here.

Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present invention.

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

In the several embodiments provided by the present invention, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

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

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims (12)

1. A method for demodulating a shared reference signal, characterized in that it comprises: The terminal device receives a second indication information sent by the network device, the second indication information being used to indicate the initial working bandwidth allocated to the terminal device, the initial working bandwidth being less than the system bandwidth; The terminal device determines the length of the shared reference signal sequence based on the initial operating bandwidth and a third preset relationship between the operating bandwidth and the length of the reference signal sequence. The terminal device receives first indication information sent by the network device, the first indication information being used to indicate resource information of a target resource group allocated to the terminal device; the resource information includes physical resource blocks (PRBs) contained in the target resource group; The terminal device determines the length of the shared reference signal sequence based on the resource size of the target resource group as determined by the PRB contained in the target resource group, wherein the shared reference signal is a reference signal shared by multiple terminal devices, and the length of the shared reference signal sequence is used to demodulate the shared reference signal. 2. The method as described in claim 1, wherein the terminal device determines the length of the shared reference signal sequence based on the resource size of the target resource group determined by the PRB contained in the target resource group, comprising: The terminal device determines the resource size of the target resource group based on the PRB contained in the target resource group, and determines the length of the shared reference signal sequence based on a first preset relationship between the resource size and the length of the reference signal sequence. 3. The method as described in claim 2, wherein the first preset relationship indicates that the length of the sequence of reference signals is N times the resource size, where N is an integer greater than or equal to 1. 4. The method as described in claim 3, wherein N is an integer multiple of a first value, wherein the first value is a value pre-agreed upon by the terminal device and the network device. 5. A method for demodulating a shared reference signal, characterized in that it comprises: The network device sends a second indication message to the terminal device. The second indication message is used to indicate the initial working bandwidth allocated to the terminal device, so that the terminal device can determine the length of the shared reference signal sequence based on the initial working bandwidth and a second preset relationship between the working bandwidth and the length of the reference signal sequence, wherein the initial working bandwidth is less than the system bandwidth. The network device determines first indication information, which is used to indicate resource information of a target resource group allocated to the terminal device; the resource information includes physical resource blocks (PRBs) contained in the target resource group. The network device sends the first indication information to the terminal device so that the terminal device can determine the PRB of the target resource group according to the first indication information, and determine the length of the shared reference signal sequence according to the resource size of the target resource group determined by the PRB contained in the target resource group, wherein the shared reference signal is a reference signal shared by multiple terminal devices, and the length of the shared reference signal sequence is used to demodulate the shared reference signal. 6. A terminal device, characterized in that it comprises: A receiving module is configured to receive second indication information sent by a network device, the second indication information being used to indicate the initial working bandwidth allocated to the terminal device, the initial working bandwidth being less than the system bandwidth; The determining module is used to determine the length of the shared reference signal sequence based on the initial operating bandwidth and a third preset relationship between the operating bandwidth and the length of the reference signal sequence. The receiving module is specifically configured to receive first indication information sent by the network device, the first indication information being used to indicate resource information of a target resource group allocated to the terminal device; the resource information includes physical resource blocks (PRBs) contained in the target resource group; The determining module is specifically used to determine the length of the shared reference signal sequence based on the resource size of the target resource group determined by the PRB contained in the target resource group, wherein the shared reference signal is a reference signal shared by multiple terminal devices, and the length of the shared reference signal sequence is used to demodulate the shared reference signal. 7. The terminal device as described in claim 6, wherein the determining module is specifically used for: The length of the shared reference signal sequence is determined based on the resource size of the target resource group as determined by the PRB contained in the target resource group, and based on a first preset relationship between the resource size and the length of the reference signal sequence. 8. The terminal device as described in claim 7, wherein the first preset relationship indicates that the length of the sequence of reference signals is N times the resource size, where N is an integer greater than or equal to 1. 9. The terminal device as described in claim 8, wherein N is an integer multiple of a first value, wherein the first value is a value pre-agreed upon by the terminal device and the network device. 10. A network device, characterized in that it comprises: The sending module is used to send second indication information to the terminal device. The second indication information is used to indicate the initial working bandwidth allocated to the terminal device, so that the terminal device can determine the length of the shared reference signal sequence based on the initial working bandwidth and a second preset relationship between the working bandwidth and the length of the reference signal sequence, wherein the initial working bandwidth is less than the system bandwidth. A determining module is configured to determine first indication information, the first indication information being used to indicate resource information of a target resource group allocated to the terminal device; the resource information includes physical resource blocks (PRBs) contained in the target resource group; The sending module is configured to send the first indication information to the terminal device, so that the terminal device can determine the PRB of the target resource group according to the first indication information, and determine the length of the shared reference signal sequence according to the resource size of the target resource group determined by the PRB contained in the target resource group, wherein the shared reference signal is a reference signal shared by multiple terminal devices, and the length of the shared reference signal sequence is used to demodulate the shared reference signal. 11. A terminal device, characterized in that it comprises: a processor and a transceiver, wherein, The transceiver is used to receive and/or transmit signals under the control of the processor; The processor is configured to execute the method according to any one of claims 1 to 4. 12. A network device, characterized in that it comprises: a processor and a transceiver, wherein, The transceiver is used to receive and/or transmit signals under the control of the processor; The processor is configured to execute the method according to claim 5.