CN116848907A

CN116848907A - Wireless communication mode, terminal device and network device

Info

Publication number: CN116848907A
Application number: CN202180076904.0A
Authority: CN
Inventors: 方昀; 史志华; 陈文洪; 黄莹沛
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2021-04-30
Filing date: 2021-04-30
Publication date: 2023-10-03
Also published as: WO2022227033A1

Abstract

The embodiment of the application provides a wireless communication mode, terminal equipment and network equipment, which indicate uplink transmission to be sent to STRP or MTRP through at least one indication field in DCI, and indicate SRS resource sets corresponding to the uplink transmission when the uplink transmission is sent to the STRP or MTRP.

Description

Wireless communication method, terminal device and network device

Technical Field

The embodiment of the application relates to the field of communication, and more particularly relates to a wireless communication mode, terminal equipment and network equipment.

Background

Currently, there are a single-transceiver point (Single Transmission Receive Point, STRP) uplink transmission scheme based on one sounding reference signal (Sounding Reference Signal, SRS) resource set and a multi-transceiver point (Multi Transmission Receive Point, MTRP) uplink retransmission scheme based on two SRS resource sets.

In the dynamic switching scenario between the supporting STRP uplink transmission scheme and the MTRP uplink repeated transmission scheme, how to instruct the SRS resource set corresponding to the uplink transmission is a technical problem to be solved in the application.

Disclosure of Invention

The embodiment of the application provides a wireless communication mode, terminal equipment and network equipment, wherein STRP or MTRP is indicated by at least one indication field in DCI, and when uplink transmission is sent to the STRP or MTRP, an SRS resource set corresponding to the uplink transmission is indicated.

In a first aspect, a wireless communication method is provided, including: the terminal device receives the DCI. Wherein, the terminal equipment is configured with two SRS resource sets, and the DCI comprises: the at least one indication domain is used for indicating that the uplink transmission is sent to the STRP or the MTRP, and when the uplink transmission is sent to the STRP or the MTRP, the corresponding SRS resource set is transmitted in the uplink.

In a second aspect, there is provided a wireless communication method comprising: the network device transmits DCI to the terminal device. Wherein, the terminal equipment is configured with two SRS resource sets, and the DCI comprises: the at least one indication domain is used for indicating that the uplink transmission is sent to the STRP or the MTRP, and when the uplink transmission is sent to the STRP or the MTRP, the corresponding SRS resource set is transmitted in the uplink.

In a third aspect, there is provided a terminal device comprising: and a communication unit for receiving the DCI. Wherein, the terminal equipment is configured with two SRS resource sets, and the DCI comprises: the at least one indication domain is used for indicating that the uplink transmission is sent to the STRP or the MTRP, and when the uplink transmission is sent to the STRP or the MTRP, the corresponding SRS resource set is transmitted in the uplink.

In a fourth aspect, there is provided a network device comprising: and the communication unit is used for sending the DCI to the terminal equipment. Wherein, the terminal equipment is configured with two SRS resource sets, and the DCI comprises: the at least one indication domain is used for indicating that the uplink transmission is sent to the STRP or the MTRP, and when the uplink transmission is sent to the STRP or the MTRP, the corresponding SRS resource set is transmitted in the uplink.

In a fifth aspect, a terminal device is provided comprising a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory and executing the method in the first aspect or various implementation manners thereof.

In a sixth aspect, a network device is provided that includes a processor and a memory. The memory is for storing a computer program and the processor is for calling and running the computer program stored in the memory for performing the method of the second aspect or implementations thereof described above.

A seventh aspect provides an apparatus for implementing the method of any one of the first to second aspects or each implementation thereof.

Specifically, the device comprises: a processor for calling and running a computer program from a memory, causing a device in which the apparatus is installed to perform the method as in any one of the first to second aspects or implementations thereof described above.

In an eighth aspect, a computer-readable storage medium is provided for storing a computer program that causes a computer to perform the method of any one of the above-described first to second aspects or implementations thereof.

In a ninth aspect, there is provided a computer program product comprising computer program instructions for causing a computer to perform the method of any one of the first to second aspects or implementations thereof.

In a tenth aspect, there is provided a computer program which, when run on a computer, causes the computer to perform the method of any one of the first to second aspects or implementations thereof.

In summary, in the present application, at least one indication field in DCI indicates STRP or MTRP, and when uplink transmission is sent to STRP or MTRP, the SRS resource set corresponding to uplink transmission is indicated.

Drawings

Fig. 1 is a schematic diagram of a communication system architecture according to an embodiment of the present application;

fig. 2 is a flow chart of a non-codebook based uplink transmission scheme;

fig. 3 is a flow chart of a codebook-based uplink transmission scheme;

fig. 4 is an interaction flow chart of a wireless communication method according to an embodiment of the present application;

fig. 5 shows a schematic block diagram of a terminal device 500 according to an embodiment of the application;

fig. 6 shows a schematic block diagram of a network device 600 according to an embodiment of the application;

fig. 7 is a schematic block diagram of a communication device 700 according to an embodiment of the present application;

FIG. 8 is a schematic block diagram of an apparatus of an embodiment of the present application;

fig. 9 is a schematic block diagram of a communication system 900 provided by an embodiment of the present application.

Detailed Description

The following description of the technical solutions according to the embodiments of the present application will be given with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art to which the application pertains without inventive faculty, are intended to fall within the scope of the application.

The embodiment of the application can be applied to various communication systems, such as: global system for mobile communications (Global System of Mobile communication, GSM), code division multiple access (Code Division Multiple Access, CDMA) system, wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) system, general packet radio service (General Packet Radio Service, GPRS), long term evolution (Long Term Evolution, LTE) system, long term evolution advanced (Advanced long term evolution, LTE-a) system, NR system, evolution system of NR system, LTE-on-unlicensed spectrum (LTE-based access to unlicensed spectrum, LTE-U) system, NR on-unlicensed spectrum (NR-based access to unlicensed spectrum, NR-U) system, universal mobile communication system (Universal Mobile Telecommunication System, UMTS), wireless local area network (Wireless Local Area Networks, WLAN), wireless fidelity (Wireless Fidelity, wiFi), next generation communication system or other communication system, etc.

Generally, the number of connections supported by the conventional communication system is limited and easy to implement, however, as the communication technology advances, the mobile communication system will support not only conventional communication but also, for example, device-to-Device (D2D) communication, machine-to-machine (Machine to Machine, M2M) communication, machine type communication (Machine Type Communication, MTC), inter-vehicle (Vehicle to Vehicle, V2V) communication, and the like, to which the embodiments of the present application can also be applied.

Optionally, the communication system in the embodiment of the present application may be applied to a carrier aggregation (Carrier Aggregation, CA) scenario, a dual connectivity (Dual Connectivity, DC) scenario, or a Stand Alone (SA) fabric scenario.

The frequency spectrum of the application of the embodiment of the application is not limited. For example, the embodiment of the application can be applied to licensed spectrum and unlicensed spectrum.

An exemplary communication system 100 to which embodiments of the present application may be applied is shown in fig. 1. The communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal device 120 (or referred to as a communication terminal, terminal). Network device 110 may provide communication coverage for a particular geographic area and may communicate with terminal devices located within the coverage area.

Fig. 1 illustrates one network device and two terminal devices by way of example, and the communication system 100 may alternatively include multiple network devices and may include other numbers of terminal devices within the coverage area of each network device, as embodiments of the application are not limited in this regard.

Optionally, the communication system 100 may further include a network controller, a mobility management entity, and other network entities, which are not limited by the embodiment of the present application.

It should be understood that a device having a communication function in a network/system according to an embodiment of the present application may be referred to as a communication device. Taking the communication system 100 shown in fig. 1 as an example, the communication device may include a network device 110 and a terminal device 120 with communication functions, where the network device 110 and the terminal device 120 may be specific devices described above, and are not described herein again; the communication device may also include other devices in the communication system 100, such as a network controller, a mobility management entity, and other network entities, which are not limited in this embodiment of the present application.

It should be understood that the terms "system" and "network" are used interchangeably herein. The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

The embodiments of the present application describe various embodiments in connection with a terminal device and a network device, wherein: a terminal device may also be called a User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a User terminal, a wireless communication device, a User agent, a User device, or the like. The terminal device may be a Station (ST) in a WLAN, may be a cellular telephone, a cordless telephone, a session initiation protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital assistant (Personal Digital Assistant, PDA) device, a handheld device with wireless communication functionality, a computing device or other processing device connected to a wireless modem, a vehicle mounted device, a wearable device, and a next generation communication system, such as a terminal device in an NR network or a terminal device in a future evolved public land mobile network (Public Land Mobile Network, PLMN) network, etc.

By way of example, and not limitation, in embodiments of the present application, the terminal device may also be a wearable device. The wearable device can also be called as a wearable intelligent device, and is a generic name for intelligently designing daily wear by applying wearable technology and developing wearable devices, such as glasses, gloves, watches, clothes, shoes and the like. The wearable device is a portable device that is worn directly on the body or integrated into the clothing or accessories of the user. The wearable device is not only a hardware device, but also can realize a powerful function through software support, data interaction and cloud interaction. The generalized wearable intelligent device includes full functionality, large size, and may not rely on the smart phone to implement complete or partial functionality, for example: smart watches or smart glasses, etc., and focus on only certain types of application functions, and need to be used in combination with other devices, such as smart phones, for example, various smart bracelets, smart jewelry, etc. for physical sign monitoring.

The network device may be a device for communicating with the mobile device, the network device may be an Access Point (AP) in WLAN, a base station (Base Transceiver Station, BTS) in GSM or CDMA, a base station (NodeB, NB) in WCDMA, an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, or a relay station or an Access Point, or a vehicle device, a wearable device, and a network device in NR network or a base station (gNB) or a network device in future evolved PLMN network, etc.

In the embodiment of the present application, a network device provides a service for a cell, and a terminal device communicates with the network device through a transmission resource (for example, a frequency domain resource, or a spectrum resource) used by the cell, where the cell may be a cell corresponding to the network device (for example, a base station), and the cell may belong to a macro base station or a base station corresponding to a Small cell (Small cell), where the Small cell may include: urban cells (Metro cells), micro cells (Micro cells), pico cells (Pico cells), femto cells (Femto cells) and the like, and the small cells have the characteristics of small coverage area and low transmitting power and are suitable for providing high-rate data transmission services.

It should be appreciated that Multiple-Input Multiple-Output (MIMO) technology may be employed in the present application.

Before introducing the technical scheme of the present application, the following first describes SRS, an uplink transmission scheme based on a non-codebook, an uplink transmission scheme based on a codebook, and an indication manner of SRS resources in the uplink transmission scheme:

1. SRS (sounding reference Signal)

SRS can be used for CSI acquisition, downlink channel information acquisition and uplink beam management. The NR system manages and configures SRS in the manner of SRS resource set. The network device may configure a plurality of SRS resource sets for the terminal device according to different purposes, where each SRS resource set includes one or more SRS resources, and each SRS resource includes 1, 2, or 4 ports. The configuration information of each SRS resource set includes a usage indication, which may be configured as "beam management", "codebook", "non-codebook" or "antenna switching", and is used for uplink beam management, CSI acquisition based on a codebook, CSI acquisition based on a non-codebook, and downlink channel information acquisition based on SRS antenna switching, respectively.

2. Uplink transmission scheme based on non-codebook

The uplink transmission scheme based on the non-codebook is different from the uplink transmission scheme based on the codebook in that: precoding based on the non-codebook based uplink transmission scheme is not limited to a limited candidate set based on the fixed codebook, and the terminal device determines an uplink precoding matrix based on channel reciprocity. If the channel reciprocity is good enough, the terminal device can obtain better uplink precoding, and compared with a codebook-based transmission scheme, the overhead of precoding indication can be saved, and better performance can be obtained. Fig. 2 is a flowchart of a non-codebook based uplink transmission scheme, as shown in fig. 2, including the following steps:

S210: the terminal equipment measures the downlink reference signals to obtain candidate uplink precoding matrixes.

S220: and the terminal equipment uses the candidate uplink precoding matrix to precode at least one SRS used for the non-codebook uplink transmission scheme.

S230: the terminal device transmits the at least one SRS to the network device.

S240: the network equipment measures the channel of at least one SRS to obtain a channel measurement result, and selects SRS resources, the number of transmission layers, demodulation reference signal (Demodulation Reference Sgnal, DMRS) port indication information, PUSCH resource allocation and corresponding modulation and coding strategy (Modulation and Coding Scheme, MCS) levels in the SRS set according to the channel measurement result.

S250: the network device transmits downlink control information (Downlink control information, DCI) to the terminal device.

The DCI includes an SRI, DMRS port indication information, physical uplink shared channel (Physical Uplink Shared Channel, PUSCH) resource allocation, and a corresponding MCS level, where the SRI is used to indicate SRS resources selected by a network device.

S260: and the terminal equipment carries out modulation coding on the data of the PUSCH according to the MCS level, and determines a precoding matrix and a transmission layer number used when the data is transmitted by utilizing the SRI.

S270: and the terminal equipment performs precoding transmission on the PUSCH according to the precoding matrix and the transmission layer number.

Wherein, the DMRS of PUSCH and the data of PUSCH are precoded in the same way.

S280: and the network equipment estimates an uplink channel according to the DMRS and demodulates and decodes the data of the PUSCH.

For the non-codebook based uplink transmission scheme, the network device may configure 1 SRS resource set for uplink CSI acquisition for the terminal device, where the SRS resource set includes 1-4 SRS resources, and each SRS resource includes 1 SRS port. The SRI may indicate one or more SRS resources selected by the network device for use in the determination of PUSCH precoding. The number of SRS resources indicated by the SRI is the transmission layer number of the PUSCH, namely the transmission layer number of the PUSCH corresponds to the SRS resources indicated by the SRI one by one.

For the non-codebook uplink transmission scheme, the terminal equipment needs to obtain uplink precoding information according to the downlink reference signal based on channel reciprocity. One terminal device may be configured with multiple downlink reference signals, some of which may be used for beam management, some of which may be used for downlink CSI measurement, and some of which may be used for downlink channel demodulation. In order to enable the terminal device to obtain better candidate precoding for the non-codebook uplink transmission scheme, in the NR system, the network device is allowed to configure an associated NZP CSI-RS resource for channel measurement for the SRS resource set for the non-codebook uplink transmission scheme. And the terminal equipment can obtain the precoding of SRS signal transmission of the SRS resource set used for the non-codebook uplink transmission scheme according to the associated NZP CSI-RS resource.

3. Uplink transmission scheme based on codebook

Fig. 3 is a flowchart of a codebook-based uplink transmission scheme, and as shown in fig. 3, the codebook-based uplink transmission scheme in the NR system R16 includes the following steps:

s310: and the terminal equipment sends at least one SRS to the network equipment according to the SRS resources configured by the network equipment.

S320: the network equipment measures the channel of at least one SRS to obtain a channel measurement result, and selects SRS resources, TPMI, DMRS port indication information, PUSCH resource allocation and corresponding MCS levels in the SRS set according to the channel measurement result.

S330: the network device transmits DCI to the terminal device.

Wherein, the DCI comprises: SRI, TPMI, DMRS port indication information, PUSCH resource allocation, and corresponding MCS levels, wherein SRIs are used to indicate SRS resources selected by the network device.

S340: the terminal equipment carries out modulation coding on the data of the PUSCH according to the MCS, determines a precoding matrix used when the data is transmitted by utilizing the SRI and the TPMI, determines the transmission layer number by utilizing the SRI, and selects a precoder of the PUSCH from the codebook by utilizing the TPMI.

S350: and the terminal equipment performs precoding transmission on the PUSCH through the selected precoder according to the precoding matrix and the transmission layer number.

Wherein, the DMRS of PUSCH and the data of PUSCH are precoded in the same way.

S360: and the network equipment estimates an uplink channel according to the DMRS and demodulates and decodes the data of the PUSCH.

In the NR system, the network device is allowed to configure at most one SRS resource set for obtaining CSI based on a codebook for the terminal device, where at most two SRS resources may be configured in the SRS resource set, and the two SRS resources include the same SRS antenna port number. Since enhancement of PUSCH based on multiple TRP is introduced in R17, starting from R17, the NR system allows the network device to configure at most two SRS resource sets for the terminal device for codebook CSI acquisition, and there is no limitation on whether the number of resources that can be contained in the two resource sets is the same in R17.

The network device indicates the selected SRS resource to the terminal device through the SRI in the DCI, so as to assist the terminal device to determine the antenna, analog beamforming and the like used for PUSCH transmission according to the SRS resource selected by the network device. Since the number of SRS resources configured by the network device for different uplink transmission schemes may be different, determining the number of bits occupied by the SRI based on the uplink transmission scheme may reduce the overhead of the SRI. The number of bits occupied by the SRI is thus dependent on the number of SRS resources configured by the uplink transmission scheme. When the network device configures only one SRS resource for one uplink transmission scheme of the terminal device, the PUSCH under the uplink transmission scheme corresponds to the SRS resource, and therefore, the SRI indication field may not exist in the DCI.

4. Indication of SRS resources in downlink control channel

The downlink control channel carries DCI sent by the network device to the terminal device, where DCI format 0_0,DCI format 0_1 and DCI format 0_2 are used to schedule the uplink PUSCH. In DCI format 0_1 and DCI format 0_2, there is one SRI indication field, which carries an SRI. In the uplink transmission scheme based on the non-codebook, since one SRS resource corresponds to one transmission layer, the network device performs uplink channel detection based on the SRS sent by the terminal device, selects one or more SRS resources, and indicates to the terminal device through SRI, wherein the SRI indicates that the domain occupation is occupiedBitsWherein N is _SRS L for configuring the SRS resource number in the SRS resource set for non-codebook transmission _max Is a configurable maximum number of layers. This is because when the network indicates layer 1, there isThe SRS resource combination is possible, and when the SRS resource combination indicates 2 layers, the SRS resource combination existsThe combination of the possible SRS resources is possible until the network indicates min { L } _max ,N _SRS When a layer is presentA SRS resource combination is possible. In codebook transmission, since only one SRS resource is selected as a resource reference in uplink transmission at a time, the SRI indication field occupiesBits, where N _SRS The number of SRS resources in the SRS resource set for non-codebook transmission is configured.

As described above, there are currently an STRP uplink transmission scheme based on one SRS resource set and an MTRP uplink repetition transmission scheme based on two SRS resource sets. How to realize dynamic switching between the STRP uplink transmission scheme and the MTRP uplink repeated transmission scheme, and how to instruct the SRS resource set corresponding to the uplink transmission when the uplink transmission is sent to the STRP is a technical problem to be solved in the application.

In order to solve the technical problem, the present application indicates, through at least one indication field in DCI, dynamic switching between an STRP uplink transmission scheme and an MTRP uplink repeated transmission scheme, and how to indicate an SRS resource set corresponding to uplink transmission when the uplink transmission is sent to the STRP.

The technical scheme of the application will be described in detail as follows:

fig. 4 is an interaction flow chart of a wireless communication method according to an embodiment of the present application, as shown in fig. 4, the method includes the following steps:

s410: the terminal equipment receives DCI; wherein, the terminal equipment is configured with two SRS resource sets, and the DCI comprises: the at least one indication domain is used for indicating that the uplink transmission is sent to the STRP or the MTRP, and when the uplink transmission is sent to the STRP or the MTRP, the corresponding SRS resource set is transmitted in the uplink.

Alternatively, the two SRS resource sets may be SRS resource sets based on codebook transmission, or SRS resource sets based on non-codebook transmission, which is not limited in the present application.

Alternatively, the terminal device may be configured with more than two SRS resource sets, such as three SRS resource sets, which is not limited in this aspect of the present application.

Optionally, the number of SRS resource sets is related to the number of TRPs, for example: the number of SRS resource sets is the same as the number of TRPs, and the SRS resource sets and the TRPs are in one-to-one correspondence. Alternatively, the SRS resource set is independent of the number of TRPs in the MTRP, which the present application does not limit.

Optionally, at least one indication field is used to indicate that the uplink transmission is sent to the MTRP, and is further used to indicate the two SRS resource sets corresponding to the uplink transmission when the uplink transmission is sent to the MTRP.

Optionally, at least one indication field is configured to indicate that the uplink transmission is sent to the STRP, and when the uplink transmission is sent to the STRP, the uplink transmission corresponds to a target SRS resource set, where the target SRS resource set is one of the two SRS resource sets.

It should be appreciated that the target SRS resource set is one of two SRS resource sets.

It should be understood that the DCI is used to schedule the uplink transmission.

Alternatively, the uplink transmission may be a PUSCH transmission, but is not limited thereto.

Optionally, the at least one indication field may be, but is not limited to, the following:

case 1: when both SRS resource sets include one SRS resource, the at least one indication field includes: a first indication field and a second indication field; the first indication domain is used for indicating that the uplink transmission is sent to the STRP or the MTRP, and the second indication domain is used for indicating that the uplink transmission corresponds to the target SRS resource set when the uplink transmission is sent to the STRP.

Case 2: when both SRS resource sets include one SRS resource, at least one indication domain is a third indication domain; the third indication domain indicates a target SRS resource set, indicates that uplink transmission is sent to the STRP, and corresponds to the target SRS resource set; or, the third indication field indicates two SRS resource sets, indicating that the uplink transmission is sent to the MTRP, and the uplink transmission corresponds to the two SRS resource sets.

Case 3: when a first SRS resource set of the two SRS resource sets includes one SRS resource and a second SRS resource set includes a plurality of SRS resources, the at least one indication field includes: a fourth indication field, a fifth indication field, and the DCI further includes a sixth indication field; the fourth indication domain is used for indicating that the uplink transmission is sent to the STRP or the MTRP, and the fifth indication domain is used for indicating that the uplink transmission corresponds to a target SRS resource set when the uplink transmission is sent to the STRP, wherein the target SRS resource set is a first SRS resource set; or, the fourth indication domain is used for indicating that the uplink transmission is sent to the STRP or the MTRP, the fifth indication domain is used for indicating a target SRS resource set corresponding to the uplink transmission when the uplink transmission is sent to the STRP, the sixth indication domain is used for indicating SRS resources in the target SRS resource set corresponding to the uplink transmission when the uplink transmission is sent to the STRP, and the target SRS resource set is the second SRS resource set.

Case 4: when both SRS resource sets include a plurality of SRS resources, the at least one indication field includes: a seventh indication field, an eighth indication field, and the DCI further includes: a ninth indication field; the seventh indication domain is used for indicating that the uplink transmission is sent to the STRP or the MTRP, the eighth indication domain is used for indicating a target SRS resource set corresponding to the uplink transmission when the uplink transmission is sent to the STRP, and the ninth indication domain is used for indicating the SRS resource in the target SRS resource set corresponding to the uplink transmission when the uplink transmission is sent to the STRP.

The following description is made for case 1:

optionally, the first indication field occupies at least 1 bit, for example, but not limited thereto, 1 bit.

Optionally, the value of the first indication field is 0, which indicates that the uplink transmission is sent to the STRP, and the value of the first indication field is 1, which indicates that the uplink transmission is sent to the MTRP. Or the first indication field value is 1, which indicates that the uplink transmission is sent to the STRP, and the first indication field value is 0, which indicates that the uplink transmission is sent to the MTRP.

Optionally, the second indication field occupies at least 1 bit, for example, but not limited thereto, 1 bit.

Assuming that the two SRS resource sets are SRS resource set 1 and SRS resource set 2, this will not be described in detail.

Optionally, the value of the second indication field is 0, which indicates that when the uplink transmission is sent to the STRP, the uplink transmission corresponds to the SRS resource set 1, and the value of the second indication field is 1, which indicates that when the uplink transmission is sent to the STRP, the uplink transmission corresponds to the SRS resource set 2. Or, the value of the second indication field is 1, which indicates that the uplink transmission corresponds to the SRS resource set 1 when the uplink transmission is sent to the STRP, and the value of the second indication field is 0, which indicates that the uplink transmission corresponds to the SRS resource set 2 when the uplink transmission is sent to the STRP.

Optionally, when the uplink transmission is based on a codebook and the number of ports of SRS resources in the two SRS resource sets is greater than 1, the second indication field is one transmission precoding matrix indication (Transmission Precoding Matrix Indicator, TPMI) field in the DCI.

Alternatively, the one TPMI field may be any one TPMI field in DCI, for example, the first TPMI field or the second TPMI field in DCI, which is not limited by the present application.

Example 1, assuming that the first indication field has a value of 0, indicates that the uplink is sent to the STRP, and the first indication field has a value of 1, indicates that the uplink is sent to the MTRP. The second indication field has a value of 0, which indicates that the uplink transmission corresponds to the SRS resource set 1 when the uplink transmission is sent to the STRP, and the second indication field has a value of 1, which indicates that the uplink transmission corresponds to the SRS resource set 2 when the uplink transmission is sent to the STRP. Assuming that the value of the first indication field of the DCI is 0 and the value of the second indication field is also 0, it indicates that uplink transmission is sent to the STRP, and that the uplink transmission corresponds to SRS resource set 1.

The following description is made for case 2:

optionally, the third indication field occupies at least 2 bits, for example, but not limited thereto, 2 bits.

It should be understood that the third indication domain may determine that the uplink transmission is sent to the STRP or MTRP through the SRS resource set indicated by the third indication domain, and the uplink transmission corresponds to the SRS resource set.

Example 2, when the third indication field indicates the SRS resource set 1, indicates that the uplink transmission is sent to the STRP, and the uplink transmission corresponds to the SRS resource set 1. When the third indication field indicates SRS resource set 1 and SRS resource set 2, uplink transmission is indicated to be sent to the MTRP, and the uplink transmission corresponds to SRS resource set 1 and SRS resource set 2.

The following description is made for case 3:

optionally, the fourth indication field occupies at least 1 bit, for example, occupies 1 bit, but is not limited thereto.

Optionally, the fourth indication field has a value of 0, which indicates that the uplink transmission is sent to the STRP, and the fourth indication field has a value of 1, which indicates that the uplink transmission is sent to the MTRP. Or, the fourth indication field has a value of 1, which indicates that the uplink transmission is sent to the STRP, and the fourth indication field has a value of 0, which indicates that the uplink transmission is sent to the MTRP.

Optionally, the fifth indicator field occupies at least 1 bit, for example, 1 bit, but is not limited thereto.

Optionally, the fifth indication field has a value of 0, which indicates that when the uplink transmission is sent to the STRP, the uplink transmission corresponds to the SRS resource set 1, and the fifth indication field has a value of 1, which indicates that when the uplink transmission is sent to the STRP, the uplink transmission corresponds to the SRS resource set 2. Or, the fifth indication field has a value of 1, which indicates that the uplink transmission corresponds to the SRS resource set 1 when the uplink transmission is sent to the STRP, and the fifth indication field has a value of 0, which indicates that the uplink transmission corresponds to the SRS resource set 2 when the uplink transmission is sent to the STRP.

Alternatively, if the uplink transmission is a codebook-based uplink transmission, the greater one N of the number of bits occupied by the sixth indication field and the number of SRS resources included in SRS resource set 1 and SRS resource set 2 _max Related, for example: the sixth indication field occupies at least a bit number of

Example 3, assuming that SRS resource set 1 includes 2 SRS resources and SRS resource set 2 includes 4 SRS resources, the number of bits occupied by the sixth indication field is at least

Alternatively, if the uplink transmission is a codebook-based uplink transmission, the greater one N of the number of bits occupied by the sixth indication field and the number of SRS resources included in SRS resource set 1 and SRS resource set 2 _max Maximum number of transmission layers L supported by terminal equipment _max Related, for example: the sixth finger indicates that the domain occupies at least the bit number of Wherein,representation ofThe explanation of the symbol is not explained below.

Example 4, assuming that the maximum number of transmission layers supported by the terminal device is 2, and SRS resource set 1 includes 2 SRS resources, SRS resource set 2 includes 4 SRS resources, then the number of bits occupied by the sixth indication field is at least

Optionally, the fifth indication field is one SRI field in the DCI, i.e., in an STRP scenario, the target SRS resource set is indicated by multiplexing the SRI field. In this case, the sixth indication field may be one TPMI field in the DCI or another indication field in the DCI, which is not limited by the present application.

The number of bits occupied by the SRI field is described below assuming that the fifth indication field is an SRI field in the DCI:

in one implementation, when the uplink transmission is based on the codebook, the number of bits occupied by the SRI field and N ₁ Related to; wherein N is ₁ And the SRS resource number included in the SRS resource set corresponding to one SRI domain is represented in the MTRP scene.

Optionally, the number of bits occupied by the SRI field isAlternatively, the SRI field occupies a greater number of bits thanThe application is not limited in this regard.

Example 5, assuming that the uplink transmission is based on a codebook, the target SRS resource set in the STRP scenario is indicated by the SRI field 1 in the DCI, the SRS resource set 1 includes the SRS resource number of 2, the SRS resource set 2 includes the SRS resource number of 4, and in the MTRP scenario, the SRS resource set corresponding to the SRI field 1 is the SRS resource set 2, then the number of bits occupied by the SRI field 1 is the number of bits

In a second implementation manner, when the uplink transmission is based on the uplink transmission of the non-codebook, the number of bits occupied by the SRI field is equal to N ₁ And L _max Related to; wherein N is ₁ Representing the number, L, of SRS resources included in an SRS resource set corresponding to one SRI domain in an MTRP scene _max Indicating the maximum number of layers supported by the terminal device.

Example 6, assuming that the uplink transmission is based on a non-codebook, the maximum number of layers supported by the terminal device is 2, the target SRS resource set in the STRP scenario is indicated by the SRI field 1 in the dci, the SRS resource set 1 includes the SRS resource number of 2, the SRS resource set 2 includes the SRS resource number of 4, and in the MTRP scenario, the SRS resource set corresponding to the SRI field 1 is the SRS resource set 2, then the number of bits occupied by the SRI field 1 is the number of bits

For the first and second realizations, the following description is given:

optionally, when the number of bits occupied by the SRI field is greater than 1 and the fourth indication field is used to indicate that the uplink transmission is sent to the STRP, 1 bit in the SRI field is used to indicate the target SRS resource set, and the other bits in the SRI field are padded with 0.

Optionally, the 1 bit in the SRI field is the lowest bit or the highest bit in the SRI field.

Example 7, assuming that the number of bits occupied by SRI field 1 is 2 and the fourth indicated field indicates that an uplink transmission is sent to STRP, then the lowest 1 bit in SRI field 1 is used to indicate the target SRS resource set and the other 1 bit in SRI field 1 is padded with 0.

Optionally, the sixth indication field is one SRI field in the DCI, that is, in the STRP scenario, the SRS resource is indicated in the target SRS resource set by multiplexing the SRI field. In this case, the fifth indication field may be one TPMI field in the DCI or another indication field in the DCI, which the present application is not limited to.

The number of bits occupied by the SRI field is described below assuming that the sixth indicator field is an SRI field in the DCI:

in one implementation, when the uplink transmission is based on the codebook, the number of bits occupied by the SRI field and N ₁ 、N _max Related to; wherein N is ₁ Representing the SRS resource number, N, included in the SRS resource set corresponding to one SRI domain in the MTRP scene _max The larger of the number of SRS resources included in the two SRS resource sets is represented.

Example 8, assuming that the uplink transmission is based on a codebook, the SRS resources in the target SRS resource set are indicated in the DCI through the SRI field 1, the number of SRS resources included in the SRS resource set 1 is 2, the number of SRS resources included in the SRS resource set 2 is 4, and in the MTRP scenario, the SRS resource set corresponding to the SRI field 1 is the SRS resource set 2, then the number of bits occupied by the SRI field 1 is

Alternatively, when the number of bits occupied by the SRI field is greater thanAnd the fourth indication field is used for indicating that the uplink transmission is sent to the STRP, the SRI fieldThe bits are used to indicate SRS resources in the target SRS resource set, and other bits in the SRI field are padded with 0.

Optionally, in the SRI domainBits are from the low order bits in the SRI fieldBits, or starting from high order bits in the SRI domainBits, to which the present application is not limited.

Example 9, assuming that SRI field 1 occupies a number of bits of 4, and the fourth indicated field indicates that an uplink transmission is sent to STRP, andthe lowest 2 bits in SRI field 1 are used to indicate SRS resources in the target SRS resource set, while the other bits in SRI field 1 are padded with 0.

In a second implementation manner, when the uplink transmission is based on the uplink transmission of the non-codebook, the number of bits occupied by the SRI field is equal to N ₁ 、N _max And L _max Related to; wherein N is ₁ Representing the SRS resource number, N, included in the SRS resource set corresponding to the SRI domain in the MTRP scene _max Representing two SRS resource sets includedThe larger of the SRS resource numbers, L _max Indicating the maximum number of layers supported by the terminal device.

Optionally, the number of bits occupied by the SRI field is greater than or equal to the following result:

Example 10, assuming that the uplink transmission is based on a non-codebook, the maximum number of layers supported by the terminal device is 2, the SRS resources in the target SRS resource set are indicated by the SRI field 1 in the dci, the number of SRS resources included in the SRS resource set 1 is 2, the number of SRS resources included in the SRS resource set 2 is 4, and in the MTRP scenario, the SRS resource set corresponding to the SRI field 1 is the SRS resource set 2, then the number of bits occupied by the SRI field 1 is

Example 11, assuming that SRI field 1 occupies a number of bits of 4, and the fourth indicated field indicates that an uplink transmission is sent to STRP, andthe lowest 2 bits in SRI field 1 are used to indicate SRS resources in the target SRS resource set, while the other bits in SRI field 1 are padded with 0.

The following description is made for case 4:

Optionally, the seventh indication field occupies at least 1 bit, for example, occupies 1 bit, but is not limited thereto.

Optionally, the seventh indication field has a value of 0, which indicates that the uplink transmission is sent to the STRP, and the seventh indication field has a value of 1, which indicates that the uplink transmission is sent to the MTRP. Or, the seventh indication field value is 1, which indicates that the uplink transmission is sent to the STRP, and the seventh indication field value is 0, which indicates that the uplink transmission is sent to the MTRP.

Optionally, the eighth indication field occupies at least 1 bit, for example, occupies 1 bit, but is not limited thereto.

Optionally, the value of the eighth indication field is 0, which indicates that when the uplink transmission is sent to the STRP, the uplink transmission corresponds to the SRS resource set 1, and the value of the eighth indication field is 1, which indicates that when the uplink transmission is sent to the STRP, the uplink transmission corresponds to the SRS resource set 2. Or, the eighth indication field has a value of 1, which indicates that the uplink transmission corresponds to the SRS resource set 1 when the uplink transmission is sent to the STRP, and the eighth indication field has a value of 0, which indicates that the uplink transmission corresponds to the SRS resource set 2 when the uplink transmission is sent to the STRP.

Alternatively, if the uplink transmission is a codebook-based uplink transmission, the ninth indication field occupies the number of bits with SRS resource sets 1 andthe larger of the number of SRS resources N included in SRS resource set 2 _max Related, for example: the ninth indication field occupies at least a bit number of

Alternatively, if the uplink transmission is a codebook-based uplink transmission, then the greater of the number of bits occupied by the ninth indication field and the number of SRS resources included in SRS resource set 1 and SRS resource set 2, N _max Maximum number of transmission layers L supported by terminal equipment _max Related, for example: the ninth indication field occupies at least a bit number of

Optionally, the eighth indication field is a first TPMI field in the DCI, and the ninth indication field is a second TPMI field in the DCI.

Optionally, the eighth indication field is a first SRI field in the DCI and the ninth indication field is a second SRI field in the DCI.

The following describes the number of bits occupied by the first SRI field, assuming that the eighth indication field is the first SRI field in the DCI and the ninth indication field is the second SRI field in the DCI:

in one implementation, when the uplink transmission is based on the codebook, the number of bits occupied by the first SRI field and N ₂ Related to; wherein N is ₂ And the SRS resource number included in the SRS resource set corresponding to the first SRI domain in the MTRP scene is represented.

Optionally, the number of bits occupied by the first SRI domain isAlternatively, the SRI field occupies a greater number of bits thanThe application is not limited in this regard.

Example 12, assuming that the uplink transmission is based on a codebook, in DCI, SRI field 1 indicates a target SRS resource set in an STRP scenario, the number of SRS resources included in SRS resource set 1 is 2, the number of SRS resources included in SRS resource set 2 is 4, and in an MTRP scenario, the SRS resource set corresponding to SRI field 1 is SRS resource set 2, then the number of bits occupied by SRI field 1 is

In a second implementation manner, when the uplink transmission is based on the uplink transmission of the non-codebook, the number of bits occupied by the first SRI field and N ₂ And L _max Related to; wherein N is ₂ Representing the number, L, of SRS resources included in the SRS resource set corresponding to the first SRI domain in the MTRP scene _max Indicating the maximum number of layers supported by the terminal device.

Optionally, the first SRI field occupies a number of bits greater than or equal to

Example 13, assuming that the uplink transmission is based on a non-codebook, the maximum number of layers supported by the terminal device is 2, the target SRS resource set in the STRP scenario is indicated by the SRI field 1 in the dci, the SRS resource set 1 includes the SRS resource number of 2, the SRS resource set 2 includes the SRS resource number of 4, and in the MTRP scenario, the SRS resource set corresponding to the SRI field 1 is the SRS resource set 2, then the number of bits occupied by the SRI field 1 is the number of bits

Third implementation manner, when the uplink transmission is based on the non-codebook, the number of bits occupied by the first SRI field and N _1max Related to; wherein N is _1max Indicating that in MTRP scene, the first SRI domain corresponds toThe number of SRS resource combinations corresponding to the layer with the largest number of SRS resource combinations in the SRS resource set.

It should be understood that the third implementation is applicable to the terminal device that can learn the actual number of transmission layers of the terminal device according to the second SRI domain, based on the number of bits occupied by the first SRI domain and N _1max Related to the following.

Optionally, the first SRI field occupies a number of bits greater than or equal toBut is not limited thereto.

Example 14, assuming that the uplink transmission is based on a non-codebook, the maximum number of layers supported by the terminal device is 2, the target SRS resource set in the STRP scenario is indicated by the SRI field 1 in the dci, the SRS resource set 1 includes the SRS resource number of 2, the SRS resource set 2 includes the SRS resource number of 4, in the MTRP scenario, the SRS resource set corresponding to the SRI field 1 is the SRS resource set 2, and in the MTRP scenario, the SRS resource combination number corresponding to the layer with the largest corresponding SRS resource combination number in the SRS resource set 2 isI.e. N _1max =6, then SRI field 1 occupies a number of bits of

For the first, second and third realizations, the following description is given in detail:

optionally, when the number of bits occupied by the first SRI field is greater than 1 and the seventh indication field is used to indicate that the uplink transmission is sent to the STRP, the 1 bits in the first SRI field are used to indicate the target SRS resource set, and the other bits in the first SRI field are filled with 0.

Example 15, assuming that the number of bits occupied by SRI field 1 is 2, and the seventh indicated field indicates that an uplink is sent to STRP, then the lowest 1 bit in SRI field 1 is used to indicate the target SRS resource set, and then the other 1 bit in SRI field 1 is padded with 0.

The following describes the number of bits occupied by the second SRI field, assuming that the eighth indicator field is the first SRI field in the DCI and the ninth indicator field is the second SRI field in the DCI:

in one implementation, when the uplink transmission is based on the codebook, the number of bits occupied by the second SRI field and N ₃ 、N _max Related to; wherein N is ₃ Representing the number, N, of SRS resources included in the SRS resource set corresponding to the second SRI domain in the MTRP scene _max The larger of the number of SRS resources included in the two SRS resource sets is represented.

Optionally, the number of bits occupied by the second SRI domain is greater than or equal to

Example 16, assuming that the uplink transmission is based on a codebook, the SRS resources in the target SRS resource set are indicated in the DCI through the SRI field 2, the number of SRS resources included in the SRS resource set 1 is 2, the number of SRS resources included in the SRS resource set 2 is 4, and in the MTRP scenario, the SRS resource set corresponding to the SRI field 2 is the SRS resource set 1, then the number of bits occupied by the SRI field 2 is

Alternatively, when the number of bits occupied by the second SRI field is greater thanAnd a seventh indication field is used for indicating that the uplink transmission is sent to the STRP, in the second SRI fieldThe bits are used to indicate SRS resources in the target SRS resource set, and other bits in the second SRI domain are padded with 0.

Optionally, in the second SRI domainBits are from the lower order in the second SRI domainBits, or starting from high order in the second SRI fieldBits, to which the present application is not limited.

Example 17, assuming that SRI field 2 occupies a number of bits of 4, and the seventh indicated field indicates that an uplink transmission is sent to STRP, andthe lowest 2 bits in SRI field 2 are used to indicate SRS resources in the target SRS resource set, while the other bits in SRI field 2 are padded with 0.

In a second implementation manner, when the uplink transmission is based on the non-codebook, the number of bits occupied by the second SRI field and N ₃ 、N _max And L _max Related to; wherein N is ₃ Representing the number, N, of SRS resources included in the SRS resource set corresponding to the second SRI domain in the MTRP scene _max Representing the larger of the number of SRS resources included in the two SRS resource sets, L _max Indicating the maximum number of layers supported by the terminal device.

Optionally, the number of bits occupied by the second SRI field is greater than or equal to the following result:

example 18, assuming that the uplink transmission is based on a non-codebook, the maximum number of layers supported by the terminal device is 2, the SRS resources in the target SRS resource set are indicated by the SRI field 2 in the dci, the number of SRS resources included in the SRS resource set 1 is 2, the number of SRS resources included in the SRS resource set 2 is 4, and in the MTRP scenario, the SRS resource set corresponding to the SRI field 2 is the SRS resource set 2, then the number of bits occupied by the SRI field 2 is

Third implementation manner, when the uplink transmission is based on the non-codebook, the number of bits occupied by the second SRI field and N _2max 、N _max And L _max Related to; wherein N is _2max Representing the number of SRS resource combinations corresponding to the layer with the largest number of SRS resource combinations in the SRS resource set corresponding to the second SRI domain in the MTRP scene, N _max Representing the larger of the number of SRS resources included in the two SRS resource sets, L _max Indicating the maximum number of layers supported by the terminal device.

example 19, assuming that the uplink transmission is based on a non-codebook, the maximum number of layers supported by the terminal device is 2, the SRS resources in the target SRS resource set are indicated by the SRI field 2 in the dci, the number of SRS resources included in the SRS resource set 1 is 2, the number of SRS resources included in the SRS resource set 2 is 4, and in the MTRP scenario, the SRS resource set corresponding to the SRI field 2 is the SRS resource set 2, and in the MTRP scenario, the SRS resource set 2 corresponds to the SRS resource setThe SRS resource combination number corresponding to the layer with the largest combination number isI.e. N _2max =6, then SRI field 2 occupies a number of bits of

For the second and third realizations, the following descriptions are provided:

alternatively, when the number of bits occupied by the second SRI field is greater than And a seventh indication field is used for indicating that the uplink transmission is sent to the STRP, in the second SRI fieldThe bits are used to indicate SRS resources in the target SRS resource set, and other bits in the second SRI domain are padded with 0.

Example 20, assume that SRI Domain 2 occupies a number of bits of4, and the seventh indication field indicates that the uplink transmission is sent to the STRP, andthe lowest 2 bits in SRI field 2 are used to indicate SRS resources in the target SRS resource set, while the other bits in SRI field 2 are padded with 0.

The number of bits occupied by the first SRI indication field and the second SRI indication field is described in detail below by way of the following example:

example 21, assuming that the uplink transmission is based on a non-codebook, the maximum number of layers supported by the terminal device is 2, and the SRS resource set 1 includes SRS resources of 2, which are respectively resource 1 and resource 2. The SRS resource set 2 includes SRS resources of number 2, namely, resources 3 and 4. In the MTRP scenario, SRI field 1 corresponds to SRS resource set 1, SRI field 2 corresponds to SRS resource set 2, and in the STRP scenario, SRI field 1 is used to indicate the target SRS resource set, and SRI field 2 is used to indicate SRS resources in the target SRS resource set. The target SRS resource set may be SRS resource set 1 or SRS resource set 2, and SRS resource set 1 has 3 resource combinations: resource 1, resource 2, resource 1, and resource 2.SRS resource set 2 there are also 3 resource combinations: resource 3, resource 4, resource 3, and resource 4. Based on this, the number of bits occupied by SRI field 1 may be Wherein,the bit number occupied by the number of resource combinations corresponding to the SRS resource set 1 in the MTRP scene is represented, and 1 represents the bit number required for indicating the target SRS resource set in the STRP scene. The number of bits occupied by SRI field 2 may beWherein the first one Representing the number of bits occupied by the number of resource combinations corresponding to SRS resource set 2 in the MTRP scene, the second oneThe number of bits occupied by SRS resources in the target SRS resource set is indicated in the STRP scenario.

In example 22, assuming that the uplink transmission is based on a non-codebook, the maximum number of layers supported by the terminal device is 4, and the SRS resource set 1 includes SRS resources of 4, which are respectively resource 1, resource 2, resource 3, and resource 4. The SRS resource set 2 includes SRS resources 4, namely, resources 5, 6, 7 and 8. In the MTRP scenario, SRI field 1 corresponds to SRS resource set 1, SRI field 2 corresponds to SRS resource set 2, and in the STRP scenario, SRI field 1 is used to indicate the target SRS resource set, and SRI field 2 is used to indicate SRS resources in the target SRS resource set. The target SRS resource set may be SRS resource set 1 or SRS resource set 2, and SRS resource set 1 has 15 resource combinations as shown in table 1:

TABLE 1

SRS resource 1
SRS resource 2
SRS resource 3
SRS resource 4
SRS resources 1 and 2
SRSResources 1 and 3
SRS resources 1 and 4
SRS resources 2 and 3

SRS resources 2 and 4
SRS resources 3 and 4
SRS resources 1 and 2 and 3
SRS resources 1 and 2 and 4
SRS resources 1 and 3 and 4
SRS resources 2 and 3 and 4
SRS resources 1 and 2 and 3 and 4

Whereas SRS resource set 2 has 15 resource combinations as shown in table 2:

TABLE 2

SRS resource 5
SRS resource 6
SRS resource 7
SRS resource 8
SRS resources 5 and 6
SRS resources 5 and 7
SRS resources 5 and 8
SRS resources 6 and 7
SRS resources 6 and 8
SRS resources 7 and 8
SRS resources 5 and 6 and 7
SRS resources 5 and 6 and 8
SRS resources 5 and 7 and 8
SRS resources 6 and 7 and 8
SRS resources 5 and 6 and 7 and 8

Based on this, the number of bits occupied by SRI field 1 may beWherein,representing the number of bits occupied by the number of resource combinations corresponding to SRS resource set 1 in MTRP scene, 1 representing the number of bits occupied by the number of resources in STRP scene,for indicating the number of bits required for the target SRS resource set. The number of bits occupied by SRI field 2 may beWherein the first oneRepresenting the number of bits occupied by the number of resource combinations corresponding to SRS resource set 2 in the MTRP scene, the second oneThe number of bits occupied by SRS resources in the target SRS resource set is indicated in the STRP scenario. Alternatively, since the number of transmission layers of the terminal device can be determined according to the resource combination indicated by the first SRI domain, the number of bits occupied by the second SRI domain can be Wherein,representing the number of SRS resource combinations corresponding to the layer with the largest number of corresponding SRS resource combinations in the SRS resource set 2 in the MTRP scene, the second oneThe number of bits occupied by SRS resources in the target SRS resource set is indicated in the STRP scenario.

Example 23, assuming that the uplink transmission is based on a non-codebook, the maximum number of layers supported by the terminal device is 2, and the SRS resource set 1 includes SRS resources of 2.SRS resource set 2 includes SRS resources 4 in number. In the MTRP scene, SRI domain 1 corresponds to SRS resource set 1, and SRI domain 2 corresponds to SRS resource set 2In the STRP scenario, SRI field 1 is used to indicate a target SRS resource set, and SRI field 2 is used to indicate SRS resources in the target SRS resource set. The target SRS resource set may be SRS resource set 1 or SRS resource set 2, based on which the number of bits occupied by SRI domain 1 may beWherein,the bit number occupied by the number of resource combinations corresponding to the SRS resource set 1 in the MTRP scene is represented, and 1 represents the bit number required for indicating the target SRS resource set in the STRP scene. The number of bits occupied by SRI field 2 may beWherein the first oneRepresenting the number of bits occupied by the number of resource combinations corresponding to SRS resource set 2 in the MTRP scene, the second one The number of bits occupied by SRS resources in the target SRS resource set is indicated in the STRP scenario. Alternatively, since the number of transmission layers of the terminal device can be determined according to the resource combination indicated by the first SRI domain, the number of bits occupied by the second SRI domain can beWherein,representing the number of SRS resource combinations corresponding to the layer with the largest number of corresponding SRS resource combinations in the SRS resource set 2 in the MTRP scene, the second oneThe number of bits occupied by SRS resources in the target SRS resource set is indicated in the STRP scenario.

Example 24, assuming that the uplink transmission is based on a non-codebook, the maximum number of layers supported by the terminal device is 2, and the SRS resource set 1 includes SRS resources of 4.SRS resource set 2 includes SRS resources 2 in number. In the MTRP scenario, SRI field 1 corresponds to SRS resource set 1, SRI field 2 corresponds to SRS resource set 2, and in the STRP scenario, SRI field 1 is used to indicate the target SRS resource set, and SRI field 2 is used to indicate SRS resources in the target SRS resource set. The target SRS resource set may be SRS resource set 1 or SRS resource set 2, based on which the number of bits occupied by SRI domain 1 may beWherein,the bit number occupied by the number of resource combinations corresponding to the SRS resource set 1 in the MTRP scene is represented, and 1 represents the bit number required for indicating the target SRS resource set in the STRP scene. The number of bits occupied by SRI field 2 may be Wherein,represents the number of bits occupied by the number of resource combinations corresponding to SRS resource set 2 in the MTRP scene,indicating the number of bits occupied by SRS resources in the target SRS resource set in the STRP scenario, or since the number of transmission layers of the terminal device can be determined according to the resource combination indicated by the first SRI domain, the number of bits occupied by the second SRI domain may beWherein,representing the number of SRS resource combinations corresponding to the layer with the largest number of corresponding SRS resource combinations in the SRS resource set 2 in the MTRP scene, the second oneThe number of bits occupied by SRS resources in the target SRS resource set is indicated in the STRP scenario.

In summary, the present application indicates STRP or MTRP through at least one indication field in DCI, and indicates an SRS resource set corresponding to uplink transmission when the uplink transmission is sent to STRP or MTRP.

Fig. 5 shows a schematic block diagram of a terminal device 500 according to an embodiment of the application. As shown in fig. 5, the terminal device 500 includes: a communication unit 510 configured to receive DCI; wherein, the terminal equipment is configured with two SRS resource sets, and the DCI comprises: the at least one indication domain is used for indicating that the uplink transmission is sent to the STRP or the MTRP, and when the uplink transmission is sent to the STRP or the MTRP, the corresponding SRS resource set is transmitted in the uplink.

Optionally, when both SRS resource sets include one SRS resource, the at least one indication field includes: a first indication field and a second indication field; the first indication domain is used for indicating that the uplink transmission is sent to the STRP or the MTRP, and the second indication domain is used for indicating that the uplink transmission corresponds to the target SRS resource set when the uplink transmission is sent to the STRP.

Optionally, when the uplink transmission is based on a codebook and the number of ports of SRS resources in the two SRS resource sets is greater than 1, the second indication field is one transmission precoding matrix in the DCI indicating the TPMI field.

Optionally, when both SRS resource sets include one SRS resource, at least one indication domain is a third indication domain; the third indication domain indicates a target SRS resource set, indicates that uplink transmission is sent to the STRP, and corresponds to the target SRS resource set; or, the third indication field indicates two SRS resource sets, indicating that the uplink transmission is sent to the MTRP, and the uplink transmission corresponds to the two SRS resource sets.

Optionally, when the first SRS resource set of the two SRS resource sets includes one SRS resource and the second SRS resource set includes a plurality of SRS resources, the at least one indication field includes: a fourth indication field, a fifth indication field, and the DCI further includes a sixth indication field; the fourth indication domain is used for indicating that the uplink transmission is sent to the STRP or the MTRP, and the fifth indication domain is used for indicating that the uplink transmission corresponds to a target SRS resource set when the uplink transmission is sent to the STRP, wherein the target SRS resource set is a first SRS resource set; or, the fourth indication domain is used for indicating that the uplink transmission is sent to the STRP or the MTRP, the fifth indication domain is used for indicating a target SRS resource set corresponding to the uplink transmission when the uplink transmission is sent to the STRP, the sixth indication domain is used for indicating SRS resources in the target SRS resource set corresponding to the uplink transmission when the uplink transmission is sent to the STRP, and the target SRS resource set is the second SRS resource set.

Optionally, the fifth indication field is one SRS resource indication SRI field in the DCI.

Alternatively, when the uplink transmission is a codebook-based uplink transmission, the number of bits occupied by one SRI field is equal to N ₁ Related to; wherein N is ₁ Representation in MTRP sceneSRS resource sets corresponding to one SRI domain comprise SRS resource numbers.

Alternatively, one SRI domain occupies a bit number of

Alternatively, when the uplink transmission is based on a non-codebook, the number of bits occupied by one SRI field is equal to N ₁ And L _max Related to; wherein N is ₁ Representing the number, L, of SRS resources included in an SRS resource set corresponding to one SRI domain in an MTRP scene _max Indicating the maximum number of layers supported by the terminal device.

Alternatively, one SRI domain occupies a bit number of

Optionally, when the number of bits occupied by one SRI field is greater than 1 and the fourth indication field is used to indicate that an uplink transmission is sent to the STRP, 1 bit in one SRI field is used to indicate the target SRS resource set and the other bits in one SRI field are filled with 0.

Optionally, the sixth indication field is one SRI field in the DCI.

Alternatively, when the uplink transmission is a codebook-based uplink transmission, the number of bits occupied by one SRI field is equal to N ₁ 、N _max Related to; wherein N is ₁ Representing the SRS resource number, N, included in the SRS resource set corresponding to one SRI domain in the MTRP scene _max The larger of the number of SRS resources included in the two SRS resource sets is represented.

Alternatively, one SRI domain occupies a bit number of

Alternatively, when the number of bits occupied by one SRI field is greater thanAnd the fourth indication field is used for indicating that the uplink transmission is sent to the STRP, the fourth indication field is in one SRI field The bits are used to indicate SRS resources in the target SRS resource set, and other bits in one SRI domain are padded with 0.

Alternatively, when the uplink transmission is based on a non-codebook, the number of bits occupied by one SRI field is equal to N ₁ 、N _max And L _max Related to; wherein N is ₁ Representing the SRS resource number, N, included in the SRS resource set corresponding to one SRI domain in the MTRP scene _max Representing the larger of the number of SRS resources included in the two SRS resource sets, L _max Indicating the maximum number of layers supported by the terminal device.

Alternatively, one SRI domain occupies a bit number of

Alternatively, when the number of bits occupied by one SRI field is greater thanAnd the fourth indication field is used for indicating that the uplink transmission is sent to the STRP, the fourth indication field is in one SRI fieldThe bits are used to indicate SRS resources in the target SRS resource set, and other bits in one SRI domain are padded with 0.

Optionally, when both SRS resource sets include a plurality of SRS resources, the at least one indication field includes: a seventh indication field, an eighth indication field, and the DCI further includes: a ninth indication field; the seventh indication domain is used for indicating that the uplink transmission is sent to the STRP or the MTRP, the eighth indication domain is used for indicating a target SRS resource set corresponding to the uplink transmission when the uplink transmission is sent to the STRP, and the ninth indication domain is used for indicating the SRS resource in the target SRS resource set corresponding to the uplink transmission when the uplink transmission is sent to the STRP.

Optionally, when the uplink transmission is a codebook-based uplink transmission, the number of bits occupied by the first SRI field is equal to N ₂ Related to; wherein N is ₂ And the SRS resource number included in the SRS resource set corresponding to the first SRI domain in the MTRP scene is represented.

Optionally, the number of bits occupied by the first SRI domain is

Optionally, when the uplink transmission is based on a non-codebook, the number of bits occupied by the first SRI field is equal to N ₂ And L _max Related to; wherein N is ₂ Representing the number, L, of SRS resources included in the SRS resource set corresponding to the first SRI domain in the MTRP scene _max Indicating the maximum number of layers supported by the terminal device.

Optionally, the number of bits occupied by the first SRI domain is

Optionally, when the uplink transmission is based on a non-codebook, the number of bits occupied by the first SRI field is equal to N _1max Related to; wherein N is _1max And the SRS resource combination number corresponding to the layer with the largest corresponding SRS resource combination number in the SRS resource set corresponding to the first SRI domain is represented in the MTRP scene.

Optionally, the first SRI domain occupiesThe number of bits used is

Optionally, when the uplink transmission is a codebook-based uplink transmission, the number of bits occupied by the second SRI field is equal to N ₃ 、N _max Related to; wherein N is ₃ Representing the number, N, of SRS resources included in the SRS resource set corresponding to the second SRI domain in the MTRP scene _max The larger of the number of SRS resources included in the two SRS resource sets is represented.

Optionally, the number of bits occupied by the second SRI domain is

Optionally, when the uplink transmission is based on a non-codebook, the number of bits occupied by the second SRI field is equal to N ₃ 、N _max And L _max Related to; wherein N is ₃ Representing SRs included in SRS resource set corresponding to second SRI domain in MTRP sceneS number of resources, N _max Representing the larger of the number of SRS resources included in the two SRS resource sets, L _max Indicating the maximum number of layers supported by the terminal device.

Optionally, the number of bits occupied by the second SRI domain is

Optionally, when the uplink transmission is based on a non-codebook, the number of bits occupied by the second SRI field is equal to N _2max 、N _max And L _max Related to; wherein N is _2max Representing the number of SRS resource combinations corresponding to the layer with the largest number of SRS resource combinations in the SRS resource set corresponding to the second SRI domain in the MTRP scene, N _max Representing the larger of the number of SRS resources included in the two SRS resource sets, L _max Indicating the maximum number of layers supported by the terminal device.

Optionally, the number of bits occupied by the second SRI domain is

Alternatively, both SRS resource sets are transmitted with a codebook or are used for non-codebook transmission.

Alternatively, in some embodiments, the communication unit may be a communication interface or transceiver, or an input/output interface of a communication chip or a system on a chip.

It should be understood that the terminal device 500 according to the embodiment of the present application may correspond to the terminal device in the embodiment of the method of fig. 4, and the above and other operations and/or functions of each unit in the terminal device 500 are respectively for implementing the corresponding flow of the terminal device in the embodiment of the method of fig. 4, which is not described herein for brevity.

Fig. 6 shows a schematic block diagram of a network device 600 according to an embodiment of the application. As shown in fig. 6, the network device 600 includes: a communication unit 610 configured to send DCI to a terminal device; wherein, the terminal equipment is configured with two SRS resource sets, and the DCI comprises: the at least one indication domain is used for indicating that the uplink transmission is sent to the STRP or the MTRP, and when the uplink transmission is sent to the STRP or the MTRP, the corresponding SRS resource set is transmitted in the uplink.

Optionally, when the uplink transmission is based on a codebook and the number of ports of SRS resources in the two SRS resource sets is greater than 1, the second indication field is one TPMI field in the DCI.

Optionally, the fifth indication field is one SRI field in the DCI.

Alternatively, when the uplink transmission is a codebook-based uplink transmission, the number of bits occupied by one SRI field is equal to N ₁ Related to; wherein N is ₁ And the SRS resource number included in the SRS resource set corresponding to one SRI domain is represented in the MTRP scene.

Alternatively, one SRI domain occupies a bit number of

Optionally, the sixth indication field is one SRI field in the DCI.

Alternatively, one SRI domain occupies a bit number of

Optionally, when the uplink transmission is a codebook-based uplink transmission, the number of bits occupied by the first SRI field is equal to N ₂ Related to; wherein N is ₂ Indicating that in MTRP scene, the first SRI domain corresponds toThe SRS resource set includes the SRS resource number.

Optionally, the number of bits occupied by the first SRI domain is

Optionally, when the uplink transmission is a codebook-based uplink transmission, the number of bits occupied by the second SRI field is equal to N ₃ 、N _max Related to; wherein N is ₃ Representing SRS resource corresponding to the second SRI domain in MTRP sceneNumber of SRS resources, N, included in the source set _max The larger of the number of SRS resources included in the two SRS resource sets is represented.

Optionally, the number of bits occupied by the second SRI domain is

Optionally, when the uplink transmission is based on a non-codebook, the number of bits occupied by the second SRI field is equal to N ₃ 、N _max And L _max Related to; wherein N is ₃ Representing the number, N, of SRS resources included in the SRS resource set corresponding to the second SRI domain in the MTRP scene _max Representing the larger of the number of SRS resources included in the two SRS resource sets, L _max Indicating the maximum number of layers supported by the terminal device.

Optionally, the number of bits occupied by the second SRI domain is

Optionally, when the uplink transmission is based on a non-codebook, the number of bits occupied by the second SRI field is equal to N _2max 、N _max And L _max Related to; wherein N is _2max Indicating that in MTRP scene, the second SRI domain corresponds toSRS resource combination number corresponding to layer with largest corresponding SRS resource combination number in SRS resource set and N _max Representing the larger of the number of SRS resources included in the two SRS resource sets, L _max Indicating the maximum number of layers supported by the terminal device.

Optionally, the number of bits occupied by the second SRI domain is

It should be understood that the network device 600 according to the embodiment of the present application may correspond to the network device in the embodiment of the method of fig. 4, and the above and other operations and/or functions of each unit in the network device 600 are respectively for implementing the corresponding flow of the network device in the embodiment of the method of fig. 4, which is not described herein for brevity.

Fig. 7 is a schematic block diagram of a communication device 700 according to an embodiment of the present application. The communication device 700 shown in fig. 7 comprises a processor 710, from which the processor 710 may call and run a computer program to implement the method in an embodiment of the application.

Optionally, as shown in fig. 7, the communication device 700 may further comprise a memory 720. Wherein the processor 710 may call and run a computer program from the memory 720 to implement the method in an embodiment of the application.

Wherein the memory 720 may be a separate device from the processor 710 or may be integrated into the processor 710.

Optionally, as shown in fig. 7, the communication device 700 may further include a transceiver 730, and the processor 710 may control the transceiver 730 to communicate with other devices, and in particular, may send information or data to other devices or receive information or data sent by other devices.

Among other things, transceiver 730 may include a transmitter and a receiver. Transceiver 730 may further include antennas, the number of which may be one or more.

Optionally, the communication device 700 may be specifically a network device according to an embodiment of the present application, and the communication device 700 may implement a corresponding flow implemented by the network device in each method according to an embodiment of the present application, which is not described herein for brevity.

Optionally, the communication device 700 may be specifically a terminal device in the embodiment of the present application, and the communication device 700 may implement a corresponding flow implemented by the terminal device in each method in the embodiment of the present application, which is not described herein for brevity.

Fig. 8 is a schematic structural view of an apparatus of an embodiment of the present application. The apparatus 800 shown in fig. 8 includes a processor 810, and the processor 810 may call and run a computer program from a memory to implement the method in an embodiment of the present application.

Optionally, as shown in fig. 8, the apparatus 800 may further include a memory 820. Wherein the processor 810 may call and run a computer program from the memory 820 to implement the method in embodiments of the present application.

Wherein the memory 820 may be a separate device from the processor 810 or may be integrated into the processor 810.

Optionally, the apparatus 800 may further comprise an input interface 830. The processor 810 may control the input interface 830 to communicate with other devices or chips, and in particular, may obtain information or data sent by other devices or chips.

Optionally, the apparatus 800 may further comprise an output interface 840. The processor 810 may control the output interface 840 to communicate with other devices or chips, and in particular, may output information or data to other devices or chips.

Optionally, the apparatus may be applied to a network device in the embodiment of the present application, and the apparatus may implement a corresponding flow implemented by the network device in each method in the embodiment of the present application, which is not described herein for brevity.

Optionally, the apparatus may be applied to a terminal device in the embodiment of the present application, and the apparatus may implement a corresponding flow implemented by the terminal device in each method in the embodiment of the present application, which is not described herein for brevity.

Alternatively, the device according to the embodiment of the present application may be a chip. For example, a system-on-chip or a system-on-chip, etc.

Fig. 9 is a schematic block diagram of a communication system 900 provided by an embodiment of the present application. As shown in fig. 9, the communication system 900 includes a terminal device 910 and a network device 920.

The terminal device 910 may be configured to implement the corresponding functions implemented by the terminal device in the above method, and the network device 920 may be configured to implement the corresponding functions implemented by the network device or the base station in the above method, which are not described herein for brevity.

It should be appreciated that the processor of an embodiment of the present application may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method embodiments may be implemented by integrated logic circuits of hardware in a processor or instructions in software form. The processor may be a general purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. The disclosed methods, steps, and logic blocks in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be embodied directly in the execution of a hardware decoding processor, or in the execution of a combination of hardware and software modules in a decoding processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor reads the information in the memory and, in combination with its hardware, performs the steps of the above method.

It will be appreciated that the memory in embodiments of the application may be volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (Double Data Rate SDRAM), enhanced SDRAM (ESDRAM), synchronous DRAM (SLDRAM), and Direct RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

It should be understood that the above memory is illustrative but not restrictive, and for example, the memory in the embodiments of the present application may be Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), direct RAM (DR RAM), and the like. That is, the memory in embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.

The embodiment of the application also provides a computer readable storage medium for storing a computer program.

Optionally, the computer readable storage medium may be applied to a network device or a base station in the embodiment of the present application, and the computer program causes a computer to execute a corresponding flow implemented by the network device or the base station in each method of the embodiment of the present application, which is not described herein for brevity.

Optionally, the computer readable storage medium may be applied to a mobile terminal/terminal device in the embodiment of the present application, and the computer program causes a computer to execute a corresponding procedure implemented by the mobile terminal/terminal device in each method of the embodiment of the present application, which is not described herein for brevity.

The embodiment of the application also provides a computer program product comprising computer program instructions.

Optionally, the computer program product may be applied to a network device or a base station in the embodiment of the present application, and the computer program instructions cause a computer to execute corresponding flows implemented by the network device or the base station in the methods in the embodiments of the present application, which are not described herein for brevity.

Optionally, the computer program product may be applied to a mobile terminal/terminal device in the embodiment of the present application, and the computer program instructions cause a computer to execute corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiment of the present application, which are not described herein for brevity.

The embodiment of the application also provides a computer program.

Optionally, the computer program may be applied to a network device or a base station in the embodiment of the present application, and when the computer program runs on a computer, the computer is caused to execute a corresponding flow implemented by the network device or the base station in each method in the embodiment of the present application, which is not described herein for brevity.

Optionally, the computer program may be applied to a mobile terminal/terminal device in the embodiment of the present application, and when the computer program runs on a computer, the computer is caused to execute corresponding processes implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein for brevity.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

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

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

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. For such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

A method of wireless communication, comprising:

the terminal equipment receives downlink control information DCI;

wherein the terminal device is configured with two sounding reference signal SRS resource sets, the DCI includes: and the at least one indication domain is used for indicating that the uplink transmission is sent to the single transceiving point STRP or the multi-transceiving point MTRP, and when the uplink transmission is sent to the STRP or the MTRP, the SRS resource set corresponding to the uplink transmission is sent.
The method of claim 1, wherein the at least one indication field is configured to indicate that an uplink transmission is sent to an STRP, and wherein when the uplink transmission is sent to an STRP, the uplink transmission corresponds to a target SRS resource set, the target SRS resource set being one of the two SRS resource sets.
The method of claim 2, wherein the at least one indication field comprises, when the two SRS resource sets each comprise one SRS resource: a first indication field and a second indication field;

the first indication field is used for indicating that the uplink transmission is sent to an STRP or an MTRP, and the second indication field is used for indicating that the uplink transmission corresponds to the target SRS resource set when the uplink transmission is sent to the STRP.
The method of claim 3, wherein the second indication field is one transmission precoding matrix in the DCI indicating a TPMI field when the uplink transmission is a codebook-based uplink transmission and a number of ports of SRS resources in the two SRS resource sets is greater than 1.
The method of claim 2, wherein the at least one indication field is a third indication field when the two SRS resource sets each comprise one SRS resource;

the third indication field indicates the target SRS resource set, indicates that the uplink transmission is sent to the STRP, and the uplink transmission corresponds to the target SRS resource set; or, the third indication field indicates the two SRS resource sets, which indicates that the uplink transmission is sent to the MTRP, and the uplink transmission corresponds to the two SRS resource sets.
The method of claim 2, wherein the at least one indication field comprises, when a first set of SRS resources of the two sets of SRS resources comprises one SRS resource and a second set of SRS resources comprises a plurality of SRS resources: a fourth indication field, a fifth indication field, and the DCI further includes a sixth indication field;

the fourth indication field is configured to indicate that the uplink transmission is sent to an STRP or an MTRP, and the fifth indication field is configured to indicate, when the uplink transmission is sent to the STRP, the target SRS resource set corresponding to the uplink transmission, where the target SRS resource set is the first SRS resource set; or,

the fourth indication field is configured to indicate that the uplink transmission is sent to an STRP or an MTRP, the fifth indication field is configured to indicate that, when the uplink transmission is sent to the STRP, the target SRS resource set corresponding to the uplink transmission is the target SRS resource set, and the sixth indication field is configured to indicate that, when the uplink transmission is sent to the STRP, the SRS resource in the target SRS resource set corresponding to the uplink transmission is the target SRS resource set, where the target SRS resource set is the second SRS resource set.
The method of claim 6, wherein the fifth indication field is one SRS resource indication, SRI, field in the DCI.
The method of claim 7, wherein when the uplink is codebook-based uplink, the number of bits occupied by the one SRI field is equal to N ₁ Related to;

wherein N is ₁ And the SRS resource number included in the SRS resource set corresponding to the SRI domain is represented in the MTRP scene.
The method of claim 8, wherein the number of bits occupied by the one SRI field is
The method of claim 7, wherein when the uplink transmission is a non-codebook based uplink transmission, the number of bits occupied by the one SRI field is equal to N ₁ And L _max Related to;

wherein N is ₁ Representing the number, L, of SRS resources included in the SRS resource set corresponding to the SRI domain in the MTRP scene _max Indicating the maximum number of layers supported by the terminal equipment.
The method of claim 10, wherein the number of bits occupied by the one SRI field is
The method of any of claims 7-11, wherein when the number of bits occupied by the one SRI field is greater than 1 and the fourth indication field is used to indicate that the uplink transmission is sent to an STRP, 1 bit in the one SRI field is used to indicate the target SRS resource set and the other bits in the one SRI field are padded with 0.
The method of claim 6, wherein the sixth indication field is one SRI field in the DCI.
The method of claim 13 wherein when the uplink is codebook-based uplink, the number of bits occupied by the one SRI field is equal to N ₁ 、N _max Related to;

wherein N is ₁ Representing the number of SRS resources, N, included in the SRS resource set corresponding to the SRI domain in the MTRP scene _max Representing the greater of the number of SRS resources included in the two SRS resource sets.
The method of claim 14, wherein the number of bits occupied by the one SRI field is
The method of claim 15, wherein when the number of bits occupied by the one SRI domain is greater thanAnd the fourth indication field is configured to indicate, when the uplink transmission is sent to the STRP, the one SRI fieldBits are used to indicate SRS resources in the target SRS resource set, and other bits in the one SRI field are padded with 0.
The method of claim 13, wherein when the uplink transmission is a non-codebook based uplink transmissionWhen the number of bits occupied by the SRI domain is equal to N ₁ 、N _max And L _max Related to;

Wherein N is ₁ Representing the number of SRS resources, N, included in the SRS resource set corresponding to the SRI domain in the MTRP scene _max Representing the larger of the number of SRS resources included in the two SRS resource sets, L _max Indicating the maximum number of layers supported by the terminal equipment.
The method of claim 17, wherein the number of bits occupied by the one SRI field is
The method of claim 18, wherein when the number of bits occupied by the one SRI domain is greater thanAnd the fourth indication field is configured to indicate, when the uplink transmission is sent to the STRP, the one SRI fieldBits are used to indicate SRS resources in the target SRS resource set, and other bits in the one SRI field are padded with 0.
The method of claim 2, wherein the at least one indication field comprises, when the two SRS resource sets each comprise a plurality of SRS resources: a seventh indication field, an eighth indication field, and the DCI further includes: a ninth indication field;

the seventh indication field is configured to indicate that the uplink transmission is sent to an STRP or an MTRP, the eighth indication field is configured to indicate that, when the uplink transmission is sent to the STRP, the target SRS resource set corresponding to the uplink transmission is the uplink transmission, and the ninth indication field is configured to indicate that, when the uplink transmission is sent to the STRP, the SRS resource in the target SRS resource set corresponding to the uplink transmission is the uplink transmission.
The method of claim 20, wherein the eighth indication field is a first SRI field in the DCI and the ninth indication field is a second SRI field in the DCI.
The method of claim 21 wherein when the uplink transmission is a codebook-based uplink transmission, the number of bits occupied by the first SRI field is equal to N ₂ Related to;

wherein N is ₂ And representing the number of SRS resources included in the SRS resource set corresponding to the first SRI domain in the MTRP scene.
The method of claim 22 wherein the number of bits occupied by the first SRI domain is
The method of claim 21 wherein when the uplink transmission is a non-codebook based uplink transmission, the number of bits occupied by the first SRI field is equal to N ₂ And L _max Related to;

wherein N is ₂ Representing the number, L, of SRS resources included in the SRS resource set corresponding to the first SRI domain in the MTRP scene _max Indicating the maximum number of layers supported by the terminal equipment.
The method of claim 24 wherein the number of bits occupied by the first SRI domain is
The method of claim 21 wherein when the uplink transmission is a non-codebook based uplink transmission, the number of bits occupied by the first SRI field is equal to N _1max Related to;

wherein N is _1max And representing the number of SRS resource combinations corresponding to the layer with the largest number of SRS resource combinations in the SRS resource set corresponding to the first SRI domain in the MTRP scene.
The method of claim 26 wherein the number of bits occupied by the first SRI domain is
The method of any of claims 21-27, wherein when a number of bits occupied by the first SRI field is greater than 1 and the seventh indication field is used to indicate that the uplink transmission is sent to an STRP, 1 bit in the first SRI field is used to indicate the target SRS resource set and other bits in the first SRI field are padded with 0.
The method of claim 21 wherein the number of bits occupied by the second SRI field and N when the uplink is codebook-based uplink ₃ 、N _max Related to;

wherein N is ₃ Representing the number of SRS resources, N, included in the SRS resource set corresponding to the second SRI domain in the MTRP scene _max Representing the greater of the number of SRS resources included in the two SRS resource sets.
According to claimThe method of claim 29, wherein the number of bits occupied by the second SRI domain is
The method of claim 30 wherein when the number of bits occupied by the second SRI domain is greater than And the seventh indication field is configured to indicate, when the uplink transmission is sent to the STRP, the second SRI fieldBits are used to indicate SRS resources in the target SRS resource set, and other bits in the second SRI domain are padded with 0.
The method of claim 21 wherein the number of bits occupied by the second SRI field is equal to N when the uplink is a non-codebook based uplink ₃ 、N _max And L _max Related to;

wherein N is ₃ Representing the number of SRS resources, N, included in the SRS resource set corresponding to the second SRI domain in the MTRP scene _max Representing the larger of the number of SRS resources included in the two SRS resource sets, L _max Indicating the maximum number of layers supported by the terminal equipment.
The method of claim 32 wherein the number of bits occupied by the second SRI domain is
The method of claim 21 wherein the number of bits occupied by the second SRI field is equal to N when the uplink is a non-codebook based uplink _2max 、N _max And L _max Related to;

wherein N is _2max Representing the number of SRS resource combinations corresponding to the layer with the largest number of SRS resource combinations in the SRS resource set corresponding to the second SRI domain in the MTRP scene, N _max Representing the larger of the number of SRS resources included in the two SRS resource sets, L _max Indicating the maximum number of layers supported by the terminal equipment.
The method of claim 34 wherein the number of bits occupied by the second SRI domain is
The method of claim 33 or 35, wherein when the number of bits occupied by the second SRI domain is greater thanAnd the seventh indication field is configured to indicate, when the uplink transmission is sent to the STRP, the second SRI fieldBits are used to indicate SRS resources in the target SRS resource set, and other bits in the second SRI domain are padded with 0.
The method of claim 20, wherein the eighth indication field is a first TPMI field in the DCI and the ninth indication field is a second TPMI field in the DCI.
The method of claim 1, wherein both SRS resource sets are transmitted with a codebook or are used for non-codebook transmissions.
A method of wireless communication, comprising:

the network equipment sends DCI to the terminal equipment;

wherein the terminal device is configured with two SRS resource sets, and the DCI includes: and the at least one indication domain is used for indicating that the uplink transmission is sent to the STRP or the MTRP, and when the uplink transmission is sent to the STRP or the MTRP, the SRS resource set corresponding to the uplink transmission is sent.
The method of claim 39, wherein the at least one indication field is used to indicate that an uplink transmission is sent to an STRP, and when the uplink transmission is sent to an STRP, the uplink transmission corresponds to a target SRS resource set, the target SRS resource set being one of the two SRS resource sets.
The method of claim 40, wherein when the two SRS resource sets each comprise one SRS resource, the at least one indication field comprises: a first indication field and a second indication field;

the first indication field is used for indicating that the uplink transmission is sent to an STRP or an MTRP, and the second indication field is used for indicating that the uplink transmission corresponds to the target SRS resource set when the uplink transmission is sent to the STRP.
The method of claim 41, wherein the second indication field is one TPMI field in the DCI when the uplink transmission is a codebook-based uplink transmission and a number of ports of SRS resources in the two SRS resource sets is greater than 1.
The method of claim 40, wherein the at least one indication field is a third indication field when the two SRS resource sets each comprise one SRS resource;

The third indication field indicates the target SRS resource set, indicates that the uplink transmission is sent to the STRP, and the uplink transmission corresponds to the target SRS resource set; or, the third indication field indicates the two SRS resource sets, which indicates that the uplink transmission is sent to the MTRP, and the uplink transmission corresponds to the two SRS resource sets.
The method of claim 40, wherein the at least one indication field comprises, when a first set of SRS resources of the two sets of SRS resources comprises one SRS resource and a second set of SRS resources comprises a plurality of SRS resources: a fourth indication field, a fifth indication field, and the DCI further includes a sixth indication field;

the fourth indication field is configured to indicate that the uplink transmission is sent to an STRP or an MTRP, and the fifth indication field is configured to indicate, when the uplink transmission is sent to the STRP, the target SRS resource set corresponding to the uplink transmission, where the target SRS resource set is the first SRS resource set; or,

the fourth indication field is configured to indicate that the uplink transmission is sent to an STRP or an MTRP, the fifth indication field is configured to indicate that, when the uplink transmission is sent to the STRP, the target SRS resource set corresponding to the uplink transmission is the target SRS resource set, and the sixth indication field is configured to indicate that, when the uplink transmission is sent to the STRP, the SRS resource in the target SRS resource set corresponding to the uplink transmission is the target SRS resource set, where the target SRS resource set is the second SRS resource set.
The method of claim 44, wherein the fifth indication field is one SRI field in the DCI.
The method of claim 45, wherein when saidWhen the uplink transmission is based on the uplink transmission of the codebook, the bit number occupied by the SRI domain and N ₁ Related to;

wherein N is ₁ And the SRS resource number included in the SRS resource set corresponding to the SRI domain is represented in the MTRP scene.
The method of claim 46, wherein the number of bits occupied by the one SRI field is
The method of claim 46 wherein when the uplink transmission is a non-codebook based uplink transmission, the number of bits occupied by the one SRI field is equal to N ₁ And L _max Related to;

wherein N is ₁ Representing the number, L, of SRS resources included in the SRS resource set corresponding to the SRI domain in the MTRP scene _max Indicating the maximum number of layers supported by the terminal equipment.
The method of claim 48, wherein the number of bits occupied by the one SRI field is
The method of any of claims 45-49, wherein when the number of bits occupied by the one SRI field is greater than 1 and the fourth indication field is used to indicate that the uplink transmission is sent to an STRP, 1 bit in the one SRI field is used to indicate the target SRS resource set and other bits in the one SRI field are padded with 0.
The method of claim 44, wherein the sixth indication field is one SRI field in the DCI.
The method of claim 51 wherein when the uplink is codebook-based uplink, the number of bits occupied by the one SRI field is equal to N ₁ 、N _max Related to;

wherein N is ₁ Representing the number of SRS resources, N, included in the SRS resource set corresponding to the SRI domain in the MTRP scene _max Representing the greater of the number of SRS resources included in the two SRS resource sets.
The method of claim 52 wherein the number of bits occupied by the one SRI field is
The method of claim 53, wherein when the number of bits occupied by the one SRI field is greater thanAnd the fourth indication field is configured to indicate, when the uplink transmission is sent to the STRP, the one SRI fieldBits are used to indicate SRS resources in the target SRS resource set, and other bits in the one SRI field are padded with 0.
The method of claim 51 wherein when the uplink transmission is a non-codebook based uplink transmission, the number of bits occupied by the one SRI field is equal to N ₁ 、N _max And L _max Related to;

Wherein N is ₁ Representing the number of SRS resources, N, included in the SRS resource set corresponding to the SRI domain in the MTRP scene _max Representing the larger of the number of SRS resources included in the two SRS resource sets, L _max Indicating the maximum number of layers supported by the terminal equipment.
The method of claim 55 wherein the number of bits occupied by the one SRI domain is
The method of claim 56 wherein when said one SRI domain occupies a greater number of bits thanAnd the fourth indication field is configured to indicate, when the uplink transmission is sent to the STRP, the one SRI fieldBits are used to indicate SRS resources in the target SRS resource set, and other bits in the one SRI field are padded with 0.
The method of claim 40, wherein the at least one indication field comprises, when the two SRS resource sets each comprise a plurality of SRS resources: a seventh indication field, an eighth indication field, and the DCI further includes: a ninth indication field;

the seventh indication field is configured to indicate that the uplink transmission is sent to an STRP or an MTRP, the eighth indication field is configured to indicate that, when the uplink transmission is sent to the STRP, the target SRS resource set corresponding to the uplink transmission is the uplink transmission, and the ninth indication field is configured to indicate that, when the uplink transmission is sent to the STRP, the SRS resource in the target SRS resource set corresponding to the uplink transmission is the uplink transmission.
The method of claim 58, wherein the eighth indication field is a first SRI field in the DCI and the ninth indication field is a second SRI field in the DCI.
The method of claim 59 wherein when the uplink transmission is a codebook-based uplink transmission, the number of bits occupied by the first SRI field is equal to N ₂ Related to;

wherein N is ₂ And representing the number of SRS resources included in the SRS resource set corresponding to the first SRI domain in the MTRP scene.
The method of claim 60 wherein the number of bits occupied by the first SRI domain is
The method of claim 59 wherein when the uplink transmission is a non-codebook based uplink transmission, the number of bits occupied by the first SRI field is equal to N ₂ And L _max Related to;

wherein N is ₂ Representing the number, L, of SRS resources included in the SRS resource set corresponding to the first SRI domain in the MTRP scene _max Indicating the maximum number of layers supported by the terminal equipment.
The method of claim 62 wherein the number of bits occupied by the first SRI domain is
The method of claim 59 wherein when the uplink transmission is a non-codebook based uplink transmission, the number of bits occupied by the first SRI field is equal to N _1max Related to;

wherein N is _1max And representing the number of SRS resource combinations corresponding to the layer with the largest number of SRS resource combinations in the SRS resource set corresponding to the first SRI domain in the MTRP scene.
The method of claim 64 wherein the number of bits occupied by the first SRI domain is
The method of any of claims 59-65, wherein when a number of bits occupied by the first SRI field is greater than 1 and the seventh indication field is used to indicate that the uplink transmission is sent to an STRP, 1 bit in the first SRI field is used to indicate the target SRS resource set and other bits in the first SRI field are padded with 0.
The method of claim 59 wherein when the uplink transmission is a codebook-based uplink transmission, the number of bits occupied by the second SRI field is equal to N ₃ 、N _max Related to;

wherein N is ₃ Representing the number of SRS resources, N, included in the SRS resource set corresponding to the second SRI domain in the MTRP scene _max Representing the greater of the number of SRS resources included in the two SRS resource sets.
The method of claim 67, wherein the second SRI domain occupancyThe number of bits is
The method of claim 68 wherein when the number of bits occupied by the second SRI domain is greater than And the seventh indication field is configured to indicate, when the uplink transmission is sent to the STRP, the second SRI fieldBits are used to indicate SRS resources in the target SRS resource set, and other bits in the second SRI domain are padded with 0.
The method of claim 59 wherein when the uplink transmission is a non-codebook based uplink transmission, the number of bits occupied by the second SRI field is equal to N ₃ 、N _max And L _max Related to;

wherein N is ₃ Representing the number of SRS resources, N, included in the SRS resource set corresponding to the second SRI domain in the MTRP scene _max Representing the larger of the number of SRS resources included in the two SRS resource sets, L _max Indicating the maximum number of layers supported by the terminal equipment.
The method of claim 70 wherein the number of bits occupied by the second SRI domain is
The method of claim 59 wherein when the uplink transmission is a non-codebook based uplink transmission, the number of bits occupied by the second SRI field is equal to N _2max 、N _max And L _max Related to;

wherein N is _2max Representing the number of SRS resource combinations corresponding to the layer with the largest number of SRS resource combinations in the SRS resource set corresponding to the second SRI domain in the MTRP scene, N _max Representing the larger of the number of SRS resources included in the two SRS resource sets, L _max Indicating the maximum number of layers supported by the terminal equipment.
The method of claim 72 wherein the number of bits occupied by the second SRI domain is
The method of claim 71 or claim 73, wherein when the number of bits occupied by the second SRI domain is greater thanAnd the seventh indication field is configured to indicate, when the uplink transmission is sent to the STRP, the second SRI fieldBits are used to indicate SRS resources in the target SRS resource set, and other bits in the second SRI domain are padded with 0.
The method of claim 58, wherein the eighth indication field is a first TPMI field in the DCI and the ninth indication field is a second TPMI field in the DCI.
The method of claim 39, wherein the two SRS resource sets are transmitted with a codebook or are both transmitted with a non-codebook.
A terminal device, comprising:

a communication unit configured to receive DCI;

wherein the terminal device is configured with two SRS resource sets, and the DCI includes: and the at least one indication domain is used for indicating that the uplink transmission is sent to the STRP or the MTRP, and when the uplink transmission is sent to the STRP or the MTRP, the SRS resource set corresponding to the uplink transmission is sent.
A network device, comprising:

a communication unit for transmitting DCI to a terminal device;

wherein the terminal device is configured with two SRS resource sets, and the DCI includes: and the at least one indication domain is used for indicating that the uplink transmission is sent to the STRP or the MTRP, and when the uplink transmission is sent to the STRP or the MTRP, the SRS resource set corresponding to the uplink transmission is sent.
A terminal device, comprising: a processor and a memory for storing a computer program, the processor being for invoking and running the computer program stored in the memory, performing the method of any of claims 1 to 38.
A network device, comprising: a processor and a memory for storing a computer program, the processor being for invoking and running the computer program stored in the memory, performing the method of any of claims 39 to 76.
A chip, comprising: a processor for calling and running a computer program from a memory, causing a device on which the chip is mounted to perform the method of any one of claims 1 to 38.
A chip, comprising: a processor for calling and running a computer program from memory, causing a device on which the chip is mounted to perform the method of any one of claims 39 to 76.
A computer readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 1 to 38.
A computer readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 39 to 76.
A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 1 to 38.
A computer program product comprising computer program instructions which cause a computer to perform the method of any one of claims 39 to 76.
A computer program, characterized in that the computer program causes a computer to perform the method of any one of claims 1 to 38.
A computer program, characterized in that the computer program causes a computer to perform the method of any one of claims 39 to 76.