WO2023050337A1

WO2023050337A1 - Wireless communication method, and terminal device and network device

Info

Publication number: WO2023050337A1
Application number: PCT/CN2021/122228
Authority: WO
Inventors: 史志华; 陈文洪; 黄莹沛
Original assignee: Oppo广东移动通信有限公司
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2023-04-06
Also published as: CN117242862A

Abstract

A wireless communication method, and a terminal device and a network device. The method comprises: a terminal device receiving first information sent by a network device, wherein the first information comprises first indication information, and the first indication information is used for indicating at least one of the following: at least one first sounding reference signal (SRS) resource, in a first SRS resource set, being used for SRS transmission; or at least one second SRS resource, in the first SRS resource set, not being used for SRS transmission; or at least one first SRS port, of at least one third SRS resource in the first SRS resource set, being used for SRS transmission; or at least one second SRS port, of the at least one third SRS resource in the first SRS resource set, not being used for SRS transmission.

Description

Wireless communication method, terminal device and network device

technical field

The embodiments of the present application relate to the communication field, and in particular to a wireless communication method, a terminal device, and a network device.

Background technique

In the New Radio (NR) system, network devices can use channel reciprocity to obtain downlink channel information by measuring the sounding reference signal (SRS). Limited by cost and hardware, the number of transmitting antennas of a terminal device may be less than the number of receiving antennas. In order to support terminal devices with fewer transmitting antennas than receiving antennas, they can also obtain downlink channel information through channel reciprocity. NR The system supports the use of SRS antenna switching to obtain downlink channel information.

After the network device indicates the SRS resource set parameters used for antenna switching through radio resource control (Radio Resource Control, RRC) signaling, the terminal device performs SRS transmission according to the SRS resource set parameters. In some cases, due to some factors (such as saving SRS resource overhead, reducing terminal power consumption, etc.), it is necessary to change the antenna switching mechanism. In this case, the network device needs to reconfigure the SRS resource set parameters through RRC signaling. The delay resulting in the change of the antenna switching mechanism is relatively large, and the signaling overhead is also relatively large.

Contents of the invention

The present application provides a wireless communication method, a terminal device, and a network device, which are beneficial to reducing the delay of changing an antenna switching mechanism and simultaneously reducing signaling overhead.

In a first aspect, a wireless communication method is provided, including: a terminal device receiving first information sent by a network device, wherein the first information includes first indication information, and the first indication information is used to indicate the following At least one of:

At least one first SRS resource in the first sounding reference signal SRS resource set is used for SRS transmission; or

at least one second SRS resource in the first set of SRS resources is not used for SRS transmission; or

at least one first SRS port of at least one third SRS resource in the first set of SRS resources is used for SRS transmission; or

At least one second SRS port of at least one third SRS resource in the first SRS resource set is not used for SRS transmission.

In a second aspect, a wireless communication method is provided, including: a network device sending first information to a terminal device, where the first information includes first indication information, and the first indication information is used to indicate the following At least one of:

In a third aspect, a terminal device is provided, configured to execute the method in the foregoing first aspect or various implementation manners thereof.

Specifically, the terminal device includes a functional module for executing the method in the above first aspect or its various implementation manners.

In a fourth aspect, a network device is provided, configured to execute the method in the foregoing second aspect or various implementation manners thereof.

Specifically, the network device includes a functional module for executing the method in the above second aspect or each implementation manner thereof.

In a fifth aspect, a terminal device is provided, including a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method in the above first aspect or its various implementations.

A sixth aspect provides a network device, including a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method in the above second aspect or its various implementations.

In a seventh aspect, a chip is provided for implementing any one of the above first aspect to the second aspect or the method in each implementation manner thereof.

Specifically, the chip includes: a processor, configured to call and run a computer program from the memory, so that the device installed with the device executes any one of the above-mentioned first to second aspects or any of the implementations thereof. method.

In an eighth aspect, there is provided a computer-readable storage medium for storing a computer program, and the computer program causes a computer to execute any one of the above-mentioned first to second aspects or the method in each implementation manner thereof.

A ninth aspect provides a computer program product, including computer program instructions, the computer program instructions cause a computer to execute any one of the above first to second aspects or the method in each implementation manner.

In a tenth aspect, a computer program is provided, which, when running on a computer, causes the computer to execute any one of the above-mentioned first to second aspects or the method in each implementation manner.

Through the above technical solution, the network device can dynamically indicate the changed SRS resource set parameters by indicating the transmission status of the SRS resource set parameters through the first information, and does not need to reconfigure the SRS resource set parameters through RRC signaling, which is beneficial to reduce the antenna switching mechanism The delay of the change realizes the rapid adjustment of the parameters of the SRS resource set, and at the same time helps to reduce the signaling overhead.

Description of drawings

FIG. 1 is a schematic diagram of a communication system architecture provided by an embodiment of the present application.

Fig. 2 is a schematic diagram of SRS resource set parameters.

Fig. 3 is a schematic interaction diagram of a wireless communication method provided according to an embodiment of the present application.

FIG. 4 is a MAC CE format diagram indicating SRS resources used for transmission or not used for transmission in an SRS resource set according to an embodiment of the present application.

FIG. 5 is a MAC CE format diagram indicating multiple SRS resources used for transmission or not used for transmission in an SRS resource set according to an embodiment of the present application.

FIG. 6 is a MAC CE format diagram indicating SRS resources used for transmission or not used for transmission in a set of multiple SRS resources according to an embodiment of the present application.

FIG. 7 is a MAC CE format diagram indicating SRS resources used for transmission and SRS resources not used for transmission in the SRS resource set according to an embodiment of the present application.

FIG. 8 is a MAC CE format diagram indicating that all SRS resources in the SRS resource set are used for transmission or none are used for transmission according to an embodiment of the present application.

9 is a MAC CE format diagram indicating SRS resources used for transmission and SRS resources not used for transmission in the SRS resource set according to another embodiment of the present application.

FIG. 10 is a MAC CE format diagram indicating SRS resources used for transmission and SRS resources not used for transmission in a set of multiple SRS resources according to an embodiment of the present application.

11 is a MAC CE format diagram indicating SRS resources used for transmission and SRS resources not used for transmission in a set of multiple SRS resources according to another embodiment of the present application.

FIG. 12 is a MAC CE format diagram of an SRS port used for transmission indicating an SRS resource in an SRS resource set according to an embodiment of the present application.

FIG. 13 is a MAC CE format diagram of an SRS port used for transmission indicating SRS resources in a plurality of SRS resource sets according to an embodiment of the present application.

FIG. 14 is a MAC CE format diagram indicating SRS ports used for transmission and SRS ports not used for transmission of SRS resources in the SRS resource set according to another embodiment of the present application.

FIG. 15 is a MAC CE format diagram indicating that all SRS ports of SRS resources in the SRS resource set are used for transmission or none are used according to an embodiment of the present application.

FIG. 16 is a MAC CE format diagram indicating SRS ports used for transmission and SRS ports not used for transmission of SRS resources in the SRS resource set according to another embodiment of the present application.

FIG. 17 is a MAC CE format diagram of an SRS port used for transmission and an SRS port not used for transmission indicating SRS resources in a plurality of SRS resource sets according to an embodiment of the present application.

FIG. 18 is a MAC CE format diagram of an SRS port used for transmission and an SRS port not used for transmission indicating SRS resources in a plurality of SRS resource sets according to an embodiment of the present application.

FIG. 19 is a MAC CE format diagram indicating the transmission status of SRS resources and SRS ports in the SRS resource set according to an embodiment of the present application.

Fig. 20 is a schematic block diagram of a terminal device provided according to an embodiment of the present application.

Fig. 21 is a schematic block diagram of a network device provided according to an embodiment of the present application.

Fig. 22 is a schematic block diagram of a communication device provided according to an embodiment of the present application.

Fig. 23 is a schematic block diagram of a chip provided according to an embodiment of the present application.

Fig. 24 is a schematic block diagram of a communication system provided according to an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, but not all of the embodiments. With regard to the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

The technical solution of the embodiment of the present application can be applied to various communication systems, such as: Global System of Mobile communication (Global System of Mobile communication, GSM) system, code division multiple access (Code Division Multiple Access, CDMA) system, broadband code division multiple access (Wideband Code Division Multiple Access, WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced long term evolution (LTE-A) system , New Radio (NR) system, evolution system of NR system, LTE (LTE-based access to unlicensed spectrum, LTE-U) system on unlicensed spectrum, NR (NR-based access to unlicensed spectrum) on unlicensed spectrum unlicensed spectrum (NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunications System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (Wireless Fidelity, WiFi), fifth-generation communication (5th-Generation, 5G) system or other communication systems, etc.

Generally speaking, the number of connections supported by traditional communication systems is limited and easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communication, but also support, for example, Device to Device (Device to Device, D2D) communication, Machine to Machine (M2M) communication, Machine Type Communication (MTC), Vehicle to Vehicle (V2V) communication, or Vehicle to everything (V2X) communication, etc. , the embodiments of the present application may also be applied to these communication systems.

Optionally, the communication system in the embodiment of the present application may be applied to a carrier aggregation (Carrier Aggregation, CA) scenario, may also be applied to a dual connectivity (Dual Connectivity, DC) scenario, and may also be applied to an independent (Standalone, SA) deployment Web scene.

Optionally, the communication system in the embodiment of the present application may be applied to an unlicensed spectrum, where the unlicensed spectrum may also be considered as a shared spectrum; or, the communication system in the embodiment of the present application may also be applied to a licensed spectrum, where, Licensed spectrum can also be considered as non-shared spectrum.

The embodiments of the present application describe various embodiments in conjunction with network equipment and terminal equipment, wherein the terminal equipment may also be referred to as user equipment (User Equipment, UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.

The terminal device can be a station (STATION, ST) in a WLAN, a cellular phone, a cordless phone, 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) devices, handheld devices with wireless communication functions, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, next-generation communication systems such as terminal devices in NR networks, or future Terminal equipment in the evolved public land mobile network (Public Land Mobile Network, PLMN) network, etc.

In the embodiment of this application, the terminal device can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; it can also be deployed on water (such as ships, etc.); it can also be deployed in the air (such as aircraft, balloons and satellites) superior).

In this embodiment of the application, the terminal device may be a mobile phone (Mobile Phone), a tablet computer (Pad), a computer with a wireless transceiver function, a virtual reality (Virtual Reality, VR) terminal device, an augmented reality (Augmented Reality, AR) terminal Equipment, wireless terminal equipment in industrial control, wireless terminal equipment in self driving, wireless terminal equipment in remote medical, wireless terminal equipment in smart grid , wireless terminal equipment in transportation safety, wireless terminal equipment in smart city, or wireless terminal equipment in smart home.

As an example but not a limitation, in this embodiment of the present application, the terminal device may also be a wearable device. Wearable devices can also be called wearable smart devices, which is a general term for the application of wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not only a hardware device, but also achieve powerful functions through software support, data interaction, and cloud interaction. Generalized wearable smart devices include full-featured, large-sized, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, etc., and only focus on a certain type of application functions, and need to cooperate with other devices such as smart phones Use, such as various smart bracelets and smart jewelry for physical sign monitoring.

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

As an example but not a limitation, in this embodiment of the present application, the network device may have a mobile feature, for example, the network device may be a mobile device. Optionally, the network equipment may be a satellite or a balloon station. For example, the satellite can be a low earth orbit (low earth orbit, LEO) satellite, a medium earth orbit (medium earth orbit, MEO) satellite, a geosynchronous earth orbit (geosynchronous earth orbit, GEO) satellite, a high elliptical orbit (High Elliptical Orbit, HEO) satellite. ) Satellite etc. Optionally, the network device may also be a base station installed on land, water, and other locations.

In this embodiment of the present application, the network device may provide services for a cell, and the terminal device communicates with the network device through the transmission resources (for example, frequency domain resources, or spectrum resources) used by the cell, and the cell may be a network device ( For example, a cell corresponding to a base station), the cell may belong to a macro base station, or may belong to a base station corresponding to a small cell (Small cell), and the small cell here may include: a metro cell (Metro cell), a micro cell (Micro cell), a pico cell ( Pico cell), Femto cell, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.

Exemplarily, a communication system 100 applied in this embodiment of the application is shown in FIG. 1 . The communication system 100 may include a network device 110, and the network device 110 may be a device for communicating with a terminal device 120 (or called a communication terminal, terminal). The network device 110 can provide communication coverage for a specific geographical area, and can communicate with terminal devices located in the coverage area.

FIG. 1 exemplarily shows one network device and two terminal devices. Optionally, the communication system 100 may include multiple network devices and each network device may include other numbers of terminal devices within the coverage area. This application The embodiment does not limit this.

Optionally, the communication system 100 may further include other network entities such as a network controller and a mobility management entity, which is not limited in this embodiment of the present application.

It should be understood that a device with a communication function in the network/system in the 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 equipment may include a network equipment 110 and a terminal equipment 120 with communication functions. The network equipment 110 and the terminal equipment 120 may be the specific equipment described above, and will not be repeated here. The communication device may also include other devices in the communication system 100, such as network controllers, mobility management entities 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 often used interchangeably herein. The term "and/or" in this article is just an association relationship describing associated objects, which means that there can be three relationships, for example, A and/or B can mean: A exists alone, A and B exist simultaneously, and there exists alone B these three situations. In addition, the character "/" in this article generally indicates that the contextual objects are an "or" relationship.

It should be understood that the "indication" mentioned in the embodiments of the present application may be a direct indication, may also be an indirect indication, and may also mean that there is an association relationship. For example, A indicates B, which can mean that A directly indicates B, for example, B can be obtained through A; it can also indicate that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also indicate that there is an association between A and B relation.

In the description of the embodiments of the present application, the term "corresponding" may indicate that there is a direct or indirect correspondence between the two, or that there is an association between the two, or that it indicates and is indicated, configuration and is configuration etc.

In the embodiment of this application, "predefinition" can be realized by pre-saving corresponding codes, tables or other methods that can be used to indicate related information in devices (for example, including terminal devices and network devices). The implementation method is not limited. For example, pre-defined may refer to defined in the protocol.

In the embodiment of the present application, the "protocol" may refer to a standard protocol in the communication field, for example, it may include the LTE protocol, the NR protocol, and related protocols applied in future communication systems, which is not limited in the present application.

In order to facilitate understanding of the technical solutions of the embodiments of the present application, technologies related to the present application are described.

The Sounding Reference Signal (SRS) is an important reference signal in the NR system and is widely used in various functions in the NR system, such as:

1. Acquisition of downlink channel state information (UE sounding procedure for DL CSI acquisition);

2. Frequency domain scheduling and precoding determination for uplink transmission;

3. Used for antenna switching (Antenna Switching) function;

4. Used for carrier switching (Carrier Switching) function;

5. Used for positioning function;

6. Cooperate with codebook-based UL transmission (codebook-based UL transmission);

7. Cooperate with Non-Codebook based UL transmission.

The network device can configure one or more SRS resource sets (SRS Resource set) for the terminal device, and each SRS Resource set can configure one or more SRS resources (SRS resource).

The transmission of the SRS may include the following types: periodic (Periodic), semi-persistent (Semi-persistent), and aperiodic (Aperiodic).

1. Periodic SRS and semi-persistent SRS:

Periodic SRS refers to SRS that is transmitted periodically. The period and time slot offset of SRS can be configured by Radio Resource Control (RRC) signaling. After receiving the corresponding RRC configuration, the terminal device sends SRS until the RRC configuration fails.

Spatial Relation Info (Spatial Relation Info, indicating the transmission beam in an implicit way) of the periodic SRS can also be configured by RRC signaling. Among them, the space-related information can indicate a reference channel state information reference signal (Channel State Information Reference Signal, CSI-RS), reference synchronization signal block (Synchronization Signal Block, SSB) or reference SRS, and the terminal device according to the indicated reference CSI-RS /Determine the transmission beam of the SRS resource with reference to the reception beam of the SSB, or determine the transmission beam of the SRS resource according to the transmission beam of the reference SRS resource. Or, the terminal device uses the same spatial domain transmission filter (spatial domain transmission filter) as the received indicated reference CSI-RS/reference SSB to send the corresponding SRS resource, or uses the same spatial domain transmission filter as the reference SRS resource to send Corresponding SRS resource.

Semi-persistent SRS is also an SRS for periodic transmission. The period and slot offset (slot offset) are configured by RRC signaling, but its activation and deactivation signaling can be passed through the Media Access Control Control Element (Media Access Control Control Element, MAC CE) bearer. After receiving the activation signaling, the terminal device starts to periodically transmit the SRS until it receives the deactivation signaling. The space-related information (transmission beam) of the semi-persistent SRS is carried by the MAC CE that activates the SRS.

After receiving the cycle and time slot offset configured by RRC, the terminal device determines the time slot that can be used to transmit SRS according to the following formula:

Where T _SRS and T _offset are the configured period and offset, n _f and

are the radio frame and slot numbers, respectively.

2. Aperiodic SRS transmission:

In the NR system, aperiodic SRS transmission is introduced, and the network device can trigger the SRS transmission of the terminal device through the downlink control information (Downlink Control Information, DCI). The trigger signaling used to trigger aperiodic SRS transmission can be used to schedule the physical uplink shared channel (Physical Uplink Shared Channel, PUSCH)/physical downlink shared channel (Physical Downlink Shared Channel, PDSCH) in the UE-specific search space. Downlink control The information (Downlink Control Information, DCI) bearer may also be carried by the DCI format 2_3 (format 2_3) in the public search space. Among them, DCI format 2_3 can not only be used to trigger aperiodic SRS transmission, but also can be used to configure SRS transmission on a group of UEs or a group of carriers and the corresponding transmission power control (Transmission Power Control, TPC) command.

After receiving the aperiodic SRS trigger signaling (for example, DCI), the terminal device performs SRS transmission on the SRS resource set indicated by the trigger signaling. Wherein, the slot offset (slot offset) between the trigger signaling and the SRS transmission is configured by high layer signaling (for example, RRC signaling). The network device instructs the terminal device in advance through high-layer signaling the configuration parameters of each SRS resource set (ie SRS resource set parameters, (SRS-ResourceSet)), including time-frequency resources, sequence parameters, power control parameters, etc. In addition, for each SRS resource in the triggered SRS resource set, the terminal device can also determine the transmission beam or spatial transmission filter used to transmit the SRS on the SRS resource through the spatial correlation information of the SRS resource. The spatial correlation information is passed through the RRC Configured for each SRS resource.

Multiple Input Multiple Output (MIMO) has been widely used in wireless communication systems. With MIMO technology, multiple forms of gain can be obtained:

Space diversity gain;

beamforming gain (precoding gain);

Spatial multiplexing gain.

In order to obtain beamforming gain (or precoding gain) or spatial multiplexing gain, the transmitting end needs to determine a beamforming matrix (or precoding matrix) for signal transmission. It should be understood that in the following embodiments, precoding may also be replaced by beamforming, beamforming may also be replaced by precoding, and the two may be used interchangeably.

In some scenarios, the precoding matrix is determined based on the transmission channel information corresponding to the terminal. Optionally, on this basis, the precoding matrix may also be determined based on channel information, interference information, and the like corresponding to the multi-user MIMO paired users. Therefore, to determine the precoding matrix for terminal A, a basic requirement is to obtain the channel information of the transmission channel corresponding to terminal A.

For the channel information of the transmission channel corresponding to terminal A, there are two types of methods:

1. Feedback method: base station B sends reference information X (such as a CSI-RS signal), and terminal A measures and obtains the information of the corresponding downlink channel according to the reference signal X, and then determines the corresponding channel feedback information. Based on the channel feedback information of terminal A, base station B determines the corresponding precoding matrix to send PDSCH, or physical downlink control channel (Physical Downlink Control Channel, PDCCH), or other downlink channels or downlink reference signals to terminal A.

Optionally, the channel feedback information may include at least one of the following:

Rank Indication (Rank Indication, RI) (corresponding to the number of transmission streams suggested by the terminal);

Channel Quality Indicator (CQI) (Modulation and Coding Scheme (MCS) related information);

Precoding Matrix Indicator (Precoding Matrix Indicator, PMI) (corresponding to codebook information).

2. The method based on channel mutual dissimilarity: terminal A sends SRS information according to the configuration information of base station B, base station B measures the corresponding uplink channel according to the received SRS information, and base station B can determine terminal A according to the mutual dissimilarity of uplink and downlink channels The corresponding precoding matrix is used to send PDSCH or PDCCH, or other downlink channels or downlink reference signals

In the NR system, the usage (usage) in the SRS resource set parameter (ie SRS-ResourceSet) corresponding to the SRS signal is set to "antennaSwitching", where one SRS-ResourceSet includes one or more SRS resources.

The process of SRS signal sounding (sounding) is also called UE sounding procedure for DL CSI acquisition (UE sounding procedure for DL CSI acquisition), or SRS Tx port switching, antenna switching (antenna switching).

For a typical terminal device, the number of receiving antennas is often greater than the number of sending antennas. For example, as shown in FIG. 2 , terminal A has two receiving antennas, but only one sending antenna (single moment). Therefore, if terminal A sends an SRS (for a single antenna, the corresponding SRS resource is 1 SRS port), base station B can only obtain 8*1 channels, that is, it cannot know the channel information corresponding to half of the channels, which will affect the acquisition of more precoding performance.

The number of transmitting antennas, the number of receiving antennas of terminal A, and whether it supports "antennaSwitching" (or, whether it supports SRS Tx port switching), can have different implementations, and report through UE capability (UE capability).

In the NR system, the terminal device can report at least one of the following UE capabilities:

t1r2, t1r4, t2r4, t1r4-t2r4, t1r1, t2r2, t4r4, not supported (notSupported);

Among them, t1r2 is used for 1T2R, t2r4 is used for 2T4R, t1r4 is used for 1T4R, t1r4-t2r4 is used for 1T4R/2T4R, t1r1 is used for 1T=1R, t2r2 is used for 2T=2R, and t4r4 is used for 4T=4R.

Among them, the corresponding description of each UE capability is as follows:

For 1T2R: 0 or 1 or 2 SRS resource sets can be configured. The resource types (resourceType) corresponding to the two SRS resource sets are configured with different values, for example, the value can be aperiodic, semiPersistent, or periodic. When configuring two SRS resource sets later, the resource types corresponding to the SRS resource sets are similar, so I won’t repeat them here.

Each SRS resource set includes two single-port (ie 1-port, or SRS port (SRS port)) SRS resource, these two SRS resource are transmitted on different symbols (symbol), and the same SRS resource set The two SRS resources in correspond to different UE antenna ports (UE antenna port), corresponding to the example in Figure 2.

For 2T4R: 0 or 1 or 2 SRS resource sets can be configured, where each SRS resource set includes 2 SRS resources, each SRS resource includes 2 SRS ports, and the two SRS resources are on different symbols Transmission, and the UE antenna port pair corresponding to the SRS port pair of the second SRS resource in the same SRS resource set is different from the SRS port pair of the first SRS resource.

For 1T4R: 0 or 1 SRS resource set can be configured (periodic or semi-persistent). Each SRS resource set includes 4 single-port (1-port) SRS resources, each SRS resource is transmitted on a different symbol, and different SRS resources correspond to different UE antenna ports.

For 1T4R: 0 or 2 SRS resource sets can be configured (both configured as aperiodic). The 2 SRS resource sets include a total of 4 single-port (1-port) SRS resources, which are transmitted on different symbols in two different slots. The 4 SRS resources correspond to different UE antenna ports. The 4 SRS resources can be that each SRS resource set includes 2 SRS resources, or that 1 SRS resource set includes 3 SRS resources, and the other SRS resource set includes 1 SRS resource.

For 1T=1R, 2T=2R or 4T=4R: 0, 1 or 2 SRS resource sets can be configured, each SRS resource set contains 1 SRS resource, and the number of SRS ports corresponding to the SRS resource is 1 and 2 respectively or 4.

If the UE reports support for 't1r4-t2r4', all SRS resources in the SRS resource set need to be configured with the same SRS port (for example, 1 or 2 SRS ports).

In the subsequent description, for the convenience of distinction and explanation, the antenna switching configuration is represented by xTyR (when x=y, it is expressed as xT=yR), or "txry", and the two are corresponding or equivalent , where x and y represent positive integers greater than 0.

In some embodiments, the value of x may be one of {1, 2, 4}.

In some other embodiments, the value of x may be one of {1, 2, 4, 6, 8}.

The antenna switching configuration supported by the terminal device can be understood as a UE antenna switching capability (UE antenna switching capability).

It should be understood that the UE antenna switching capability of "xTyR" corresponds to: a UE capable of performing SRS transmission on the "x" antenna port, and "y" corresponds to all or a subset of UE receiving antennas, where the terminal supports 2T4R, Indicates that the terminal has two transmit antennas.

In the embodiment of this application, if the number of SRS ports included in an SRS resource is A, then the SRS resource can be expressed as:

The SRS resources of A ports, the SRS resources of A ports, the SRS resources of A SRS ports, the SRS resources of A ports, and the SRS resources of A ports.

In practical applications, antenna switching requires switching time, so the interval between SRS resources transmitted in the same time slot in the same SRS resource set is Y symbols, where Y can be 1 or 2, etc.

In related technologies, after a network device indicates an SRS resource set parameter (ie, SRS-ResourceSet) through RRC signaling, the terminal device performs SRS transmission according to the SRS resource set parameter. In some cases, due to consideration of some factors (such as saving SRS resource overhead, reducing terminal power consumption, etc.), it is necessary to change the antenna switching mechanism, such as changing from 2T4R antenna switching to 1T2R or 2T2R antenna switching. In this case, the network device needs to reconfigure the SRS resource set parameters through RRC signaling, resulting in a relatively long delay in changing the antenna switching mechanism, which is not conducive to the rapid adjustment of the SRS resource set parameters, and the signaling overhead is also relatively large.

In order to facilitate understanding of the technical solutions of the embodiments of the present application, the technical solutions of the present application are described in detail below through specific examples. As optional solutions, the above related technologies may be combined with the technical solutions of the embodiments of the present application in any combination, and all of them belong to the protection scope of the embodiments of the present application. The embodiment of the present application includes at least part of the following content.

FIG. 3 is a schematic flowchart of a wireless communication method 200 according to an embodiment of the present application. The method 200 can be executed by a terminal device in the communication system shown in FIG. 1. As shown in FIG. 3, the method 200 includes the following content :

S210. The terminal device receives first information sent by the network device, where the first information includes first indication information, and the first indication information is used to indicate at least one of the following:

It should be understood that the first indication information may indicate one or more items above, for example, the first indication information indicates that at least one first SRS resource in the first SRS resource set is used for SRS transmission and at least one of the first SRS resource set The second SRS resource is not used for SRS transmission; for another example, the first indication information indicates that at least one first SRS resource in the first sounding reference signal SRS resource set is used for SRS transmission and at least one third SRS resource in the first SRS resource set At least one first SRS port of is used for SRS transmission, wherein the first SRS resource and the third SRS resource are the same SRS resource. The first indication information may also indicate other similar combinations, which will not be listed one by one here. In other similar descriptions, the specific combination will not be repeated.

It should be understood that in this embodiment of the present application, being used for SRS transmission may also be expressed as being used for transmission, and not being used for SRS transmission may also be expressed as not being used for transmission.

That is, the first indication information may indicate at least one of the following:

At least one first SRS resource in the first sounding reference signal SRS resource set is used for transmission; or

At least one second SRS resource in the first set of SRS resources is not used for transmission; or

at least one first SRS port of at least one third SRS resource in the first set of SRS resources is used for transmission; or

At least one second SRS port of at least one third SRS resource in the first SRS resource set is not used for transmission.

In this embodiment of the present application, whether SRS resources are used for SRS transmission can be understood as a transmission state of SRS resources, that is, SRS resources are indicated as being used for transmission, or not used for transmission, or indicated as being able to be used for transmission status, or a status that is not used for transmission. Similarly, whether the SRS port is used for SRS transmission can be understood as the transmission status of the SRS port, that is, the SRS port is indicated as being used for transmission, or not used for transmission, or in other words, the SRS port is indicated as a state that can be used for transmission, Or a state not used for transmission. Whether the SRS resource set is used for SRS transmission can be understood as the transmission status of the SRS resource set, that is, the SRS resource set is indicated as being used for transmission, or not used for transmission, or the SRS resource set is indicated as a state that can be used for transmission, Or a state not used for transmission. .

Optionally, in some embodiments, the first indication information may be used to indicate the transmission status of each SRS resource set in at least one SRS resource set, and/or the transmission status of the SRS resources in the SRS resource set, and/or Or, the transmission status of the SRS port of the SRS resource.

For example, the first indication information may also be used to indicate the transmission state of the second SRS resource set, and/or the transmission state of the SRS resources in the second SRS resource set, and/or, the SRS resources included in the second SRS resource level The transmission status of the SRS port, or, may also indicate the transmission status of more SRS resource sets, and the first SRS resource set is used as an example for illustration below, but the present application is not limited thereto.

In some embodiments, the method 200 also includes:

The network device sends first configuration information to the terminal device, where the first configuration information is used to configure at least one SRS resource set, where the at least one SRS resource set includes the first SRS resource set.

In some embodiments, the first configuration information includes SRS resource set parameters (that is, SRS-ResourceSet) corresponding to each SRS resource set in at least one SRS resource set.

Optionally, the SRS resource set parameters corresponding to the SRS resource set may be used to configure parameters such as resource types, time-frequency resources, sequence parameters, and power control parameters of the SRS resource set.

Optionally, the first configuration information is sent through RRC signaling.

In some embodiments, before the first configuration information becomes invalid, the terminal device may use the first configuration information to perform SRS transmission. In some scenarios, considering some factors (such as saving SRS resource overhead, reducing terminal power consumption, etc.), it is necessary to adopt a different antenna switching mechanism, such as changing from a 2T4R antenna switching mechanism to a 1T2R or 2T2R antenna switching mechanism. In this case, The parameters of the SRS resource set need to be changed. In related technologies, changing SRS resource set parameters is achieved by network devices reconfiguring SRS resource set parameters through RRC signaling. Therefore, the delay in changing the antenna switching mechanism is relatively large, which is not conducive to the rapid adjustment of SRS resource set parameters. At the same time, the signaling overhead is relatively large.

In the embodiment of the present application, changing the SRS resource set parameter may be implemented by changing the transmission status of the SRS resource set parameter.

For example, the network device may indicate the parameter of the SRS resource set whose transmission state changes. For example, the SRS resource set whose transmission state is changed, and/or the SRS resource whose transmission state is changed, and/or the SRS port whose transmission state is changed.

For another example, the network device may indicate the changed transmission status of the SRS resource set parameter, for example, indicate the changed transmission status corresponding to the SRS resource set, and/or the changed transmission status corresponding to the SRS resource, and/or, the SRS port The corresponding changed transfer status.

It should be understood that changing the transmission status of the SRS resource set parameters includes at least one of the following:

Change the transmission status of the SRS resource set, for example, indicate that the SRS resource set is used for transmission, or indicate that the SRS resource set is not used for transmission;

changing the transmission status of the SRS resources in the SRS resource set, for example, indicating that at least one first SRS resource in the SRS resource set is used for transmission and/or at least one second SRS resource is not used for transmission;

Changing the transmission status of the SRS ports of the SRS resources in the SRS resource set, for example, indicating that at least one first SRS port of the SRS resource is used for transmission and/or at least one second SRS port is not used for transmission.

Therefore, in the embodiment of the present application, the network device indicates the transmission status of the SRS resource set parameters through the first information, which can dynamically indicate the changed SRS resource set parameters, for example, the SRS resource set parameters that need to be changed due to the change of the antenna switching mechanism , without the need to reconfigure SRS resource set parameters through RRC signaling, it can realize dynamic indication of SRS resources, help reduce the delay of antenna switching mechanism change, realize rapid adjustment of SRS resource set parameters, and help reduce signaling overhead .

In other words, the technical solutions based on the embodiments of the present application can realize dynamic antenna switching, or dynamic indication of SRS resources, that is, the embodiments of the present application provide a dynamic indication scheme for antenna switching, or a dynamic indication scheme for SRS resources, or, Antenna dynamic switching solution, therefore, the first information may also be replaced by an antenna switching dynamic indication, an SRS resource dynamic indication, or other equivalent expressions, which are not limited in this application.

It should be understood that the embodiments of the present application can be applied to the scenario where the parameters of the SRS resource set need to be changed due to the change of the antenna switching mechanism, or can also be applied to the scenario where the parameters of the SRS resource set need to be changed due to other reasons. An example is used for description, but the present application is not limited thereto.

It should be noted that, in this embodiment of the application, the antenna switching mechanism, or antenna switching configuration, antenna switching capability, SRS Tx port switching capability, etc., the above expressions are equivalent and can be replaced with each other.

As an example and not limitation, the antenna switching configuration may include at least one of the following:

t1r2, t1r4, t2r4, t1r4-t2r4, t1r1, t2r2, t4r4, t1r6, t2r6, t4r6, t1r8, t2r8, t4r8.

In some embodiments, the SRS resource set parameters corresponding to the first SRS resource set include a resource type parameter (resourceType).

In some implementation manners, the resourceType in the SRS resource set parameter corresponding to the first SRS resource set is configured as aperiodic (aperiodic). By configuring only aperiodic SRS resources to adopt the SRS resource dynamic indication mode of the embodiment of the present application, it is beneficial to reduce the implementation complexity of the terminal device.

In some other implementation manners, the resourceType in the SRS resource set parameter corresponding to the first SRS resource set is configured as one of semi-persistent (semiPersistent) and periodic (periodic). By configuring only the semi-persistent and periodic SRS resources to adopt the SRS resource dynamic indication mode of the embodiment of the present application, it is beneficial to reduce the implementation complexity of the terminal device.

In still some implementation manners, the resourceType in the SRS resource set parameter corresponding to the first SRS resource set is configured as one of aperiodic (aperiodic), semi-persistent (semiPersistent) and periodic (periodic). By configuring aperiodic, semi-persistent and periodic SRS resources, the SRS resource dynamic indication method of the embodiment of the present application can be used, which is beneficial to improve system flexibility.

It should be understood that, in the embodiment of the present application, the network device may send the first information through any downlink signaling or downlink message, which is not limited in the present application.

In some embodiments, the first information may be transmitted through MAC CE signaling.

In some other embodiments, the first information is transmitted through DCI signaling.

Transmission of the first information through MAC CE signaling or DCI signaling can realize dynamic indication of SRS resources and reduce the delay of SRS transmission.

In some embodiments, the network device may carry the first information through an existing field in the MAC CE signaling or the DCI signaling, for example, using a reserved field in the MAC CE signaling or the DCI signaling, or may also be in The newly added field in the MAC CE signaling or DCI signaling carries the first information, which is not limited in this application.

Optionally, in some embodiments of the present application, the first indication information may be used to indicate the changed SRS resource set parameters corresponding to the first SRS resource set, for example, by indicating the transmission status of the SRS resource set parameters The changed SRS resource set parameters, or in other words, the first indication information is used to indicate the changed transmission status corresponding to the SRS resource set parameters.

Optionally, in some embodiments of the present application, the first indication information may be used to indicate the changed SRS resource set parameters corresponding to the first SRS resource set, that is, may not indicate SRS resources whose transmission status has not changed Set parameters, which only indicate the set parameters of the SRS resource whose transmission state changes. For example, the first indication information may indicate the SRS resource set whose transmission state has changed, and/or the SRS resource whose transmission state has changed, and/or the SRS port whose transmission state has changed.

Optionally, the unindicated SRS resource set parameters may be considered as no change in the transmission state.

It should be understood that in the embodiment of the present application, the changed SRS resource set parameters may be at the granularity of the SRS resource set, or at the granularity of the SRS resource, or at the granularity of the SRS port, which is not limited in the present application.

For example, the first information is used to deactivate (or disable) one or more SRS resource sets, that is, the one or more SRS resource sets are not used for transmission, or deactivate (or disable) one SRS resource set , to disable) one or more SRS resources, that is, the one or more SRS resources are not used for transmission, or, for one SRS resource, deactivate (or, disable) one or more SRS ports, that is, the one or more Multiple SRS ports are not used for transmission etc.

As an example, in the first antenna switching configuration, the network device configures two SRS resource sets through RRC signaling, and in the second antenna switching configuration, the network device needs to instruct the terminal device to use only one SRS resource set for transmission, then The first information may be used to indicate to disable an SRS resource set, that is, to indicate that the SRS resource set is not used for transmission.

As an example, in the first antenna switching configuration, an SRS resource set configured by the network device through RRC signaling includes 4 SRS resources, and in the second antenna switching configuration, the network device needs to indicate 2 SRS resources in the SRS resource set If used for transmission, the first information may be used to indicate to disable two SRS resources in the one SRS resource set, that is, to indicate that the two SRS resources are not used for transmission.

As an example, in the first antenna switching configuration, one SRS resource configured by the network device through RRC signaling includes two SRS ports, and in the second antenna switching configuration, the network device needs to indicate that one SRS port of the one SRS resource uses For transmission, the first information may be used to indicate to disable one of the two SRS ports of the one SRS resource, that is, to indicate that one SRS port of the SRS resource is not used for transmission.

Correspondingly, when changing from the second antenna switching configuration to the first antenna switching configuration, the network device may indicate the enabled SRS resource set, and/or SRS resource, and/or SRS port through the first information.

Optionally, in some embodiments, when the SRS resource set parameters corresponding to multiple SRS resource sets need to be changed, the first indication information may also be used to indicate the changed SRS resource sets corresponding to the multiple SRS resource sets respectively. The resource set parameters, or the changed SRS resource set parameters of each SRS resource set in the plurality of SRS resource sets, are described below by taking the first SRS resource set as an example, but the present application is not limited thereto.

It should be understood that, in this embodiment of the present application, the first indication information may be used to dynamically indicate the granularity of the SRS resource set, and/or the granularity of the SRS resource, and/or the granularity of the SRS port.

For example, the first indication information is used to indicate that all SRS resources in an SRS resource set are not used for SRS transmission, or are all used for SRS transmission. Indicates the granularity of the corresponding SRS resource set.

For another example, the first indication information is used to indicate that at least one first SRS resource in an SRS resource set is used for SRS transmission, and/or, at least one second SRS resource is not used for SRS transmission. Corresponding to the indication of SRS resource granularity.

For another example, the first indication information is used to indicate that at least one first SRS port of one SRS resource is used for SRS transmission, and/or, at least one second SRS port is not used for SRS transmission. Indication of the corresponding SRS port granularity.

In some embodiments, the first indication information includes:

Indication information of at least one first SRS resource, and/or,

Indication information of at least one second SRS resource.

That is, the network device may indicate the SRS resources used for SRS transmission in one SRS resource set, and/or, the SRS resources not used for SRS transmission in one SRS resource set.

In other words, the network device can dynamically indicate the SRS resource granularity.

Optionally, when the network device only indicates the SRS resources in one SRS resource set that are not used for SRS transmission, then other SRS resources in the one SRS resource set are used for SRS transmission.

Optionally, when the network device only indicates the SRS resources used for SRS transmission in one SRS resource set, other SRS resources in the one SRS resource set are not used for SRS transmission.

The network device can change the terminal device from one antenna switching mechanism to another antenna switching mechanism by indicating that part of the SRS resources in an SRS resource set are not used for transmission or part of the SRS resources are used for transmission.

In some embodiments, the indication information of the at least one first SRS resource may be an identity (Identity, ID) of the at least one SRS resource, an index, or a number of the at least one SRS resource in the first SRS resource set, Or serial number, etc., the present application is not limited thereto.

Similarly, the indication information of the at least one second SRS resource may be the ID and index of the at least two SRS resources, or the number or serial number of the at least two SRS resources in the first SRS resource set, etc., the present application It is not limited to this.

In some embodiments, when the quantity of the at least one first SRS resource is small, the first indication information may include the indication information of the at least one first SRS resource, which is beneficial to reduce signaling overhead.

In some embodiments, when the quantity of the at least one second SRS resource is small, the first indication information may include the indication information of the at least one second SRS resource, which is beneficial to reduce signaling overhead.

In some other embodiments, the network device indicates at least one first SRS resource and/or at least one second SRS resource in a bitmap (bitmap) manner.

Optionally, when the number of at least one first SRS resource and/or at least one second SRS resource is large or the ID is long, it is beneficial to indicate whether the SRS resources in one SRS resource set are used for SRS transmission in a bitmap manner Reduce signaling overhead.

In some implementations, the first indication information includes a first bitmap, the first bitmap includes a plurality of bits, each bit corresponds to an SRS resource in the first SRS resource set, and the value of each bit is used to indicate Whether the corresponding SRS resource is used for SRS transmission.

As an example, a value of 1 indicates that the corresponding SRS resource is used for SRS transmission, and a value of 0 indicates that the corresponding SRS resource is not used for SRS transmission. As another example, a value of 0 indicates that the corresponding SRS resource is used for SRS transmission, and a value of 1 indicates that the corresponding SRS resource is not used for SRS transmission.

For example, if the first SRS resource set includes 8 SRS resources (SRS resource 7-SRS resource 0), the first bitmap may include 8 bits (B7-B0), and each bit corresponds to one SRS resource. If the first The bitmap is 00001111, where a bit value of 1 indicates that the corresponding SRS resource is used for SRS transmission, a value of 0 indicates that the corresponding SRS resource is not used for SRS transmission, and the first bitmap indicates that SRS resource 0 to SRS resource 3 are used For SRS transmission, SRS resource 4 to SRS resource 7 are not used for SRS transmission.

In some embodiments, the first indication information may be used to indicate that all SRS resources in the first SRS resource set are not used for SRS transmission, or all SRS resources in the first SRS resource set are used for SRS transmission.

In some implementations, the first indication information includes a first indication field, and the first indication field is used to indicate that all SRS resources in the first SRS resource set are not used for SRS transmission, or that all SRS resources in the first SRS resource set are not used for SRS transmission. Both are used for SRS transmission.

That is, the aforementioned at least one first SRS resource may include all the SRS resources in the first SRS resource set, or the aforementioned at least one second SRS resource may include all the SRS resources in the first SRS resource set.

In other words, the network device can dynamically indicate the granularity of the SRS resource set.

Indicate that all SRS resources in an SRS resource set are used for SRS transmission or none are used for SRS transmission through an independent indication field. In this way, it is not necessary to separately indicate each SRS resource in the SRS resource set, which is beneficial to reduce signaling overhead.

Optionally, the network device may indicate that all SRS resources in the first SRS resource set are not used for SRS transmission through MAC CE signaling or a reserved bit in DCI signaling, or that all SRS resources in the first SRS resource set are not used for SRS transmission. Used for SRS transmission.

Optionally, the network device may also indicate that all SRS resources in the first SRS resource set are not used for SRS transmission through an invalid value of an existing information field in MAC CE signaling or DCI signaling, or a reserved value, or, All SRS resources in the first SRS resource set are used for SRS transmission.

Optionally, the first indication field may be 1 bit.

For example, the first value of the 1 bit indicates that all SRS resources in the first SRS resource set are used for transmission, and the second value indicates that all SRS resources in the first SRS resource set are not used for transmission.

For another example, the first value of the 1 bit indicates that all SRS resources in the first SRS resource set are used for transmission, and the second value indicates that there is at least one second SRS resource not used for transmission in the first SRS resource set , the at least one second SRS resource is determined according to the indication information of the at least one second SRS resource, or the at least one second SRS resource is determined according to the first SRS resource.

For another example, the value of the 1 bit is the second value indicating that all SRS resources in the first SRS resource set are not used for transmission, and the value of the 1 bit is the first value indicating that there is at least one first SRS resource used for transmission in the first SRS resource set , the at least one first SRS resource is determined according to the indication information of the at least one first SRS resource.

Optionally, the first value is 1 and the second value is 0, or the first value is 0 and the second value is 1.

In some embodiments, the first indication information includes at least one of the following:

Indication information of the at least one first SRS port in the at least one third SRS resource;

Indication information of the at least one second SRS port in the at least one third SRS resource.

That is, the network device may indicate an SRS port of an SRS resource not used for SRS transmission, and/or, an SRS port of an SRS resource used for SRS transmission.

In other words, the network device can dynamically indicate the granularity of the SRS port.

The network device flexibly indicates the SRS port used for SRS transmission or the SRS port not used for SRS transmission through the first indication information, and can turn off part of the transmitting antenna in some scenarios to reduce the power consumption of the terminal device, or realize the terminal device from A transition from one antenna switching mechanism to another.

Optionally, when the network device only indicates the SRS port of the SRS resource that is not used for SRS transmission, then other SRS ports of the SRS resource are used for SRS transmission.

Optionally, when the network device only indicates the SRS port of the SRS resource used for SRS transmission, other SRS ports of the SRS resource are not used for SRS transmission.

In some embodiments, the indication information of the at least one first SRS port may be the port number and port index of the at least one first SRS port, or, all of the at least one first SRS port included in the third SRS resource The number or serial number in the SRS port is not limited in this application.

Similarly, the indication information of the at least one second SRS port may be the port number and port index of the at least one second SRS port, or the at least one second SRS port among all the SRS ports included in the third SRS resource The number, or serial number, etc., the present application is not limited thereto.

Optionally, when the number of the at least one first SRS port is small, the first indication information may include indication information of the at least one first SRS port, which is beneficial to reduce signaling overhead.

Optionally, when the number of the at least one second SRS port is small, the first indication information may include the indication information of the at least one second SRS port, which helps reduce signaling overhead.

In some other embodiments, the network device indicates the at least one first SRS port and/or the at least one second SRS port in a bitmap manner.

Optionally, when the number of the at least one first SRS port and/or the at least one second SRS port is relatively large or the port number is relatively long, it is indicated in a bitmap manner, which helps reduce signaling overhead.

In some implementations, the first indication information includes a second bitmap, the second bitmap includes a plurality of bits, each bit corresponds to an SRS port of the third SRS resource, and the value of each bit is used to indicate the Whether the corresponding SRS port of the three SRS resources is used for SRS transmission. As an example, a value of 1 indicates that the corresponding SRS port is used for SRS transmission, and a value of 0 indicates that the corresponding SRS port is not used for SRS transmission. As another example, a value of 0 indicates that the corresponding SRS port is used for SRS transmission, and a value of 1 indicates that the corresponding SRS port is not used for SRS transmission.

For example, if the third SRS resource includes 4 SRS ports (SRS port 4-SRS port 0), the second bitmap may include 4 bits (B3-B0), each bit corresponds to an SRS port, then if the second The bitmap is 0011, a bit value of 1 indicates that the corresponding SRS port is used for SRS transmission, and a value of 0 indicates that the corresponding SRS port is not used for SRS transmission, and the second bitmap indicates that SRS port 0 to SRS port 1 are used for For SRS transmission, SRS port 2 to SRS port 3 are not used for SRS transmission.

In some embodiments, the first indication information may be used to indicate that all SRS ports of one SRS resource are not used for SRS transmission, or all SRS ports of one SRS resource are used for SRS transmission.

In some implementations, the first indication information includes a second indication field, and the second indication field is used to indicate that all SRS ports of the third SRS resource in the first SRS resource set are not used for SRS transmission, or, the second indication field All SRS ports of the three SRS resources are used for SRS transmission.

An independent indication field indicates that all SRS ports of an SRS resource are used for SRS transmission, or none are used for SRS transmission. In this way, it is not necessary to separately indicate each SRS port, which is beneficial to reduce signaling overhead.

Optionally, the network device may indicate that all SRS ports of the third SRS resource are not used for SRS transmission through MAC CE signaling or reserved bits in DCI signaling, or that all SRS ports of the third SRS resource Both are used for SRS transmission.

Optionally, the network device may also use an invalid value of an existing information field in MAC CE signaling or DCI signaling, or a reserved value to indicate that all SRS ports of the third SRS resource are not used for SRS transmission, or, All SRS ports of the third SRS resource are used for SRS transmission.

Optionally, the second indication field may be 1 bit.

For example, the third value of the 1 bit indicates that all SRS ports of the third SRS resource are used for transmission, and the fourth value indicates that all SRS ports of the third SRS resource are not used for transmission.

For another example, the value of the 1 bit indicates that all SRS ports of the third SRS resource are used for transmission, and the value of the 1 bit indicates that there is at least one second SRS port not used for transmission in the third SRS resource, The at least one second SRS port is determined according to the indication information of the at least one second SRS port, or the at least one second SRS port is determined according to the first SRS port.

For another example, the value of the 1 bit is the fourth value indicating that all SRS ports of the third SRS resource are not used for transmission, and the value of the 1 bit is the third value indicating that there is at least one first SRS port used for transmission in the third SRS resource, The at least one first SRS port is determined according to the indication information of the at least one first SRS port.

Optionally, the third value is 1 and the fourth value is 0, or the third value is 0 and the fourth value is 1.

In some embodiments, the first indication information may further include: indication information of the at least one third SRS resource.

That is, the above-mentioned ports and indication information may be specific to specific SRS resources. In other embodiments, if the SRS resources corresponding to the port indication information are not configured, the above-mentioned port indication information is by default directed to all SRS resources in the first SRS resource set , or, for all SRS resources in the set of all SRS resources.

Optionally, the indication information of the third SRS resource may be an identity (Identity, ID) and index of the third SRS resource, or a serial number or serial number of the third SRS resource in the first SRS resource set, etc., This application is not limited thereto.

In some embodiments, the first indication information further includes indication information of the first SRS resource set.

Optionally, the indication information of the first SRS resource set may be the ID and index of the first SRS resource set, or the serial number or serial number of the first SRS resource in multiple SRS resource sets, etc. This application does not limited to this.

That is, the above-mentioned SRS resource indication information and/or port indication information may be specific to a specific SRS resource set, and in other embodiments, in the case where the SRS resource indication information and/or port indication information corresponding to the SRS resource set is not configured By default, the above SRS resource indication information and/or port indication information is for a specific SRS resource set (for example, the first SRS resource set), or for all SRS resource sets.

In some embodiments, the first information may further include second indication information, the second indication information is used to indicate the application object of the first indication information, for example, the second indication information is used to indicate The serving cell and/or the bandwidth part BWP corresponding to the first indication information.

Optionally, the second indication information may include ID (serving cell ID) or serving cell index (serving cell index) of one or more serving cells. The first indication information may be applied to the serving cell corresponding to the serving cell ID or serving cell index. Alternatively, the first indication information is applied to other serving cells except the serving cell corresponding to the serving cell ID or the serving cell index.

Optionally, the second indication information may include one or more bandwidth part (BandWidth Part, BWP) IDs or BWP indexes. The first indication information may be applied to the uplink BWP corresponding to the BWP ID or the BWP index. Or, the first indication information is applied to other uplink BWPs except the uplink BWP corresponding to the BWP ID or BWP index.

In some embodiments, if the serving cell indicated by the second indication information belongs to the first serving cell list, the first indication information corresponds to all serving cells in the first serving cell list, that is, the first indication information can be applied to the first serving cell list. All serving cells in the first serving cell list, where the first serving cell list is used to indicate at least one serving cell.

It should be understood that in the embodiment of the present application, the serving cell can also be replaced by a component carrier (Component Carrier, CC), then the second indication information can be used to indicate the carrier corresponding to the first indication information, and the first serving cell list can be replaced by First carrier list. Therefore, in the subsequent description, the component carrier and the serving cell are often used equally, or the carrier and the cell are used equally, and the two may be replaced with each other.

In this way, the network device can perform dynamic indication of SRS resources on multiple carriers by sending the first information once, so it is not necessary to perform a separate dynamic indication of SRS resources for each carrier, which is beneficial to reduce terminal power consumption and signaling overhead.

Optionally, the first serving cell list may include one or more serving cell IDs (or serving cell indexes), or may include one or more component carrier indications or identifiers.

In some embodiments, the first serving cell list may be configured by the network device, or pre-configured.

For example, the network device may configure the first serving cell list through RRC signaling.

Optionally, on the serving cells in the first serving cell list, the terminal device can use the same antenna switching configuration, therefore, on the serving cells in the first serving cell list, the terminal device can use the same antenna switching dynamic instruction SRS transmission can minimize terminal power consumption.

In some embodiments, the first indication information corresponds to all carriers in the same frequency band (band, such as intra-band) or all cells in the same frequency band (band, such as intra-band).

In this way, the network device sends the first information once, and can perform SRS resource dynamic indication on multiple carriers (or cells) on one band, so it is not necessary to perform separate SRS resource dynamics on each carrier (or cell) on one band Instructions are beneficial to reduce terminal power consumption and reduce signaling overhead.

Optionally, the second indication information also includes frequency band information. The first indication information is applied to all carriers in the frequency band corresponding to the frequency band information.

In some embodiments of the present application, as shown in FIG. 3 , the method 200 further includes:

S201. The terminal device sends second information to the network device, where the second information includes third indication information, and the third indication information is used to indicate at least one of the following: recommended antenna switching configuration, recommended number of receiving antennas, recommended number of transmit antennas.

Optionally, the recommended number of receiving antennas may be the number of receiving antennas used for antenna switching, or the number of antennas used for data reception, or the number of antennas used for downlink control channel reception, or the number of antennas used for data reception and downlink control channel reception number of antennas.

Optionally, the suggested number of transmit antennas may be the number of transmit antennas used for antenna switching, or the number of antennas used for data transmission, or the number of antennas used for uplink control channel transmission, or the number of antennas used for data transmission and uplink control channel transmission number of antennas.

In other words, the third indication information is used to indicate at least one of the following:

The desired antenna switching configuration of the terminal device, the desired number of receiving antennas, and the desired number of transmitting antennas.

Optionally, the desired antenna switching configuration of the terminal device may include but not limited to at least one of the following:

Optionally, the number of receiving antennas expected by the terminal device may include but not limited to at least one of the following: 1, 2, 4, 6, and 8.

Optionally, the transmit antenna desired by the terminal device may include but not limited to at least one of the following: 1, 2, 4, and 8.

Optionally, the terminal device can indicate to the network device the desired antenna switching mode according to its own capability or transmission requirements, so that the network device can properly configure the terminal device to optimize the configuration of the terminal device or meet the requirements of the terminal device.

It should be understood that, in the embodiment of the present application, the terminal device may send the second information through any uplink signaling or uplink message, which is not limited in the present application.

In some embodiments, the second information is carried by at least one of the following:

MAC CE, Uplink Control Information (UCI), Physical Uplink Control Channel (PUCCH).

In some embodiments, the second information further includes fourth indication information, where the fourth indication information is used to indicate an application object corresponding to the third indication information.

For example, the fourth indication information is used to indicate the serving cell and/or BWP corresponding to the third indication information.

Optionally, the fourth indication information may include one or more serving cell IDs or serving cell indexes. The third indication information may be applied to the serving cell corresponding to the serving cell ID or serving cell index. Or, the third indication information is applied to other serving cells except the serving cell corresponding to the serving cell ID or the serving cell index.

Optionally, the fourth indication information may include one or more component carrier indications or identifications, and the third indication information may be applied to the one or more component carrier indications or identifications of serving cells on corresponding carriers. Or, the third indication information is applied to serving cells on other carriers except one or more component carrier indications or identities.

Optionally, if the serving cell corresponding to the third indication information is not indicated, the third indication information may be defaulted to correspond to the current serving cell.

Optionally, the fourth indication information may include one or more BWP IDs or BWP indexes. The third indication information may be applied to the uplink BWP corresponding to the BWP ID or BWP index. Or, the first indication information is applied to other uplink BWPs except the uplink BWP corresponding to the BWP ID or BWP index.

Optionally, if the BWP corresponding to the third indication information is not indicated, the third indication information may be defaulted to correspond to the currently activated BWP.

S202. The terminal device sends third information to the network device, where the third information includes fifth indication information, and the fifth indication information is used to indicate at least one of the following:

A set of SRS resources not used for transmission suggested by the terminal device;

The terminal device suggests not to use the SRS resource for transmission;

SRS ports not used for transmission suggested by the terminal device;

An SRS resource set for transmission suggested by the terminal device;

SRS resources for transmission suggested by the terminal device;

The SRS port suggested by the terminal device for transmission.

That is, the terminal device may suggest the SRS resource set granularity, and/or the SRS resource granularity, and/or the transmission status indication of the SRS port granularity to the network device. Alternatively, the terminal device may send the desired SRS resource dynamic indication to the network device. Optionally, the SRS port not used for transmission suggested by the terminal device may be an SRS port not used for transmission corresponding to the SRS resource suggested by the terminal device for transmission, or may also be an SRS port not used for transmission suggested by the terminal device SRS ports not used for transmission corresponding to all SRS resources in the suggested SRS resource set for transmission.

That is, the SRS port not used for transmission suggested by the terminal device may correspond to a specific SRS resource, or may correspond to all SRS resources in the SRS resource set.

Optionally, the SRS port for transmission suggested by the terminal device may be the SRS port for transmission corresponding to the SRS resource for transmission suggested by the terminal device, or may be SRS ports used for transmission corresponding to all SRS resources in the suggested SRS resource set for transmission.

That is, the SRS port suggested by the terminal device for transmission may correspond to a specific SRS resource, or may correspond to all SRS resources in the SRS resource set.

Optionally, the terminal device may indicate to the network device the desired SRS resource dynamic indication according to its own capability or transmission requirements, so that the network device may properly configure the terminal device to meet the requirements of the terminal device.

In some embodiments, the fifth indication information may include:

The indication information of the SRS resource set that is not used for transmission suggested by the terminal device, such as the ID and index of the SRS resource set, or the number or sequence number of the SRS resource in multiple SRS resource sets, etc., the present application is not limited thereto.

In some embodiments, the fifth indication information may include:

The indication information of the SRS resource set used for transmission suggested by the terminal device, such as the ID and index of the SRS resource set, or the number or sequence number of the SRS resource in multiple SRS resource sets, etc., the present application is not limited thereto.

In some embodiments, the fifth indication information may include: indication information of an SRS resource not used for transmission suggested by the terminal device, such as the ID and index of the SRS resource, or the number of the SRS resource in the corresponding SRS resource set , or serial number, etc., the present application is not limited thereto.

In some embodiments, the fifth indication information may include:

The indication information of the SRS resource used for transmission suggested by the terminal device, such as the ID and index of the SRS resource, or the serial number or serial number of the SRS resource in the corresponding SRS resource set, the present application is not limited thereto.

In some other embodiments, the terminal device may also indicate the suggested SRS resources for transmission and the suggested SRS resources not used for transmission in an SRS resource set through a bitmap. For specific indication methods, refer to the relevant description of the first bitmap. For the sake of brevity, no more details are given here.

In some embodiments, the fifth indication information may include:

The indication information of the SRS port used for transmission suggested by the terminal device, such as the port number and index of the SRS port, or the number or sequence number of the SRS port in the corresponding SRS resource, etc., the present application is not limited thereto.

In some embodiments, the fifth indication information may include:

The indication information of the SRS port not used for transmission suggested by the terminal device, such as the port number and index of the SRS port, or the number or serial number of the SRS port in the corresponding SRS resource, etc., the present application is not limited thereto.

In some other embodiments, the terminal device may also indicate the suggested SRS port for transmission and the suggested SRS port not used for transmission in an SRS resource through a bitmap. For the specific indication method, refer to the relevant description of the second bitmap. For the sake of brevity, no more details are given here.

It should be understood that, in the embodiment of the present application, the terminal device may send the third information through any uplink signaling or uplink message, which is not limited in the present application.

In some embodiments, the third information is carried by at least one of the following: MAC CE, UCI, and PUCCH.

In some embodiments, the third information further includes sixth indication information, where the sixth indication information is used to indicate the application object corresponding to the fifth indication information.

For example, the sixth indication information is used to indicate the serving cell and/or BWP corresponding to the fifth indication information.

Optionally, the sixth indication information may include one or more serving cell IDs or serving cell indexes. The fifth indication information may be applied to the serving cell corresponding to the serving cell ID or serving cell index. Alternatively, the fifth indication information may be applied to other serving cells except the serving cell corresponding to the serving cell ID or serving cell index.

Optionally, the sixth indication information may include one or more component carrier indications or identifications, and the fifth indication information may be applied to the one or more component carrier indications or identifications of serving cells on corresponding carriers. Or, the fifth indication information is applied to serving cells on other carriers except one or more component carrier indications or identities.

Optionally, if the serving cell corresponding to the fifth indication information is not indicated, the fifth indication information may be defaulted to correspond to the current serving cell.

Optionally, the sixth indication information may include one or more BWP IDs or BWP indexes. The fifth indication information may be applied to the uplink BWP corresponding to the BWP ID or the BWP index. Or, the fifth indication information may be applied to other uplink BWPs except the uplink BWP corresponding to the BWP ID or BWP index.

Optionally, if the BWP corresponding to the fifth indication information is not indicated, the fifth indication information may be defaulted to correspond to the currently activated BWP.

In some embodiments, the method 200 also includes:

S203. The terminal device reports first capability information to the network device, where the first capability information indicates that the terminal device supports at least one of the first information, antenna switching dynamic indication, and SRS resource dynamic indication Perform SRS transmission.

That is, the terminal device can indicate to the network device that it supports dynamic indication of SRS resources, or in other words, support the network device to change the parameters of the SRS resource set by using the dynamic indication of SRS resources. In this way, when the network device needs to change the parameters of the RS resource set, the network device The SRS resource dynamic indication can be sent to indicate the change of the transmission state of the SRS resource set parameters, or the transmission state of the SRS resource set parameters after the change, without reconfiguring the SRS resource set parameters through RRC signaling, so that the terminal device can The dynamic indication of SRS resources for SRS transmission is beneficial to reduce the delay of changing the antenna switching mechanism, realize the rapid adjustment of SRS resource set parameters, and reduce signaling overhead.

It should be understood that, in the embodiment of the present application, the terminal device may send the first capability information through any uplink signaling or uplink message, which is not limited in the present application.

In some embodiments, the first capability information is carried by at least one of the following: MAC CE and RRC signaling.

In some embodiments, the first capability information may also be used to indicate a target frequency band and/or a target carrier, and serving cells on the target frequency band and/or serving cells on the target carrier may be configured in the same serving cell list.

Optionally, after learning the target frequency band information, the network device can know that the terminal device can use the same antenna on the target frequency band, so that the aforementioned first serving cell list or first carrier list can be generated based on the target frequency band information .

Optionally, after learning the target frequency band and target carrier information, the network device can know that the target carrier of the terminal device on the target frequency band can use the same antenna, so that the aforementioned first A list of serving cells, or a list of first carriers.

In some embodiments, the configuration granularity of the first capability information includes at least one of the following:

frequency band, frequency band combination, each frequency band in the frequency band combination, each carrier on each frequency band in the frequency band combination, frequency band range, user equipment.

For example, the first capability information is reported for a frequency band (band), that is, different frequency bands may independently report the corresponding first capability information. That is, the first capability information is per band (per band) granularity. The terminal device independently reports the corresponding first capability information for different frequency bands, which improves the flexibility of the terminal device to report the first capability information. For example, the terminal device can report that the first frequency band supports SRS transmission according to the dynamic indication of SRS resources. Other frequency bands do not support dynamic SRS resource indication for SRS transmission, so that more terminal devices can support SRS transmission according to the dynamic SRS resource indication.

For another example, the first capability information is reported for a frequency band combination (band combination, BC), that is, different frequency band combinations can independently report the corresponding first capability information. That is, the first capability information is per frequency band combination (per BC) granularity. The terminal device independently reports the corresponding first capability information for different frequency band combinations, which improves the flexibility of the terminal device to report the first capability information. For example, the terminal device can report that the first frequency band combination supports SRS transmission according to the dynamic indication of SRS resources. , other frequency band combinations do not support SRS resource dynamic indication for SRS transmission, so that more terminal devices can support SRS transmission according to the SRS resource dynamic indication.

For another example, the first capability information is reported independently for each frequency band in the frequency band combination, that is, each frequency band in a different frequency band combination may independently report the corresponding first capability information. That is, the first capability information is per band per BC granularity. The terminal device independently reports the corresponding first capability information for each frequency band in different frequency band combinations, which improves the flexibility of the terminal device to report the first capability information. For example, the terminal device can report that the first frequency band combination does not support SRS Dynamic resource indication for SRS transmission, and SRS resource dynamic indication for SRS transmission is supported on a certain frequency band in the second frequency band combination, so that more terminal devices can support SRS transmission according to the SRS resource dynamic indication.

For another example, the first capability information is reported independently for each carrier in each frequency band in the frequency band combination, that is, each carrier in each frequency band in different frequency band combinations may independently report the corresponding first capability information. That is, the first capability information is per frequency band combination per frequency band per carrier (per CC per band per BC) granularity. The terminal device independently reports the corresponding first capability information for each carrier in each frequency band in different frequency band combinations, which improves the flexibility of the terminal device to report the first capability information. For example, the terminal device can report the first capability information in the first frequency band combination It does not support SRS transmission based on dynamic indication of SRS resources, but supports dynamic indication of SRS resources for SRS transmission on a certain carrier in a certain frequency band in the second frequency band combination, so that more terminal devices can support dynamic SRS transmission based on SRS resources. Indicates SRS transmission.

For another example, the first capability information is reported for a frequency range (Frequency range, FR), that is, different FRs can independently report the corresponding first capability information. That is, the first capability information is per FR (per FR) granularity, for example, the first frequency range (FR1) and the second frequency range (FR2) independently report the corresponding first capability information. The terminal device independently reports the corresponding first capability information for different FRs, which improves the flexibility of the terminal device to report the first capability information. For example, the terminal device may not support SRS transmission according to the dynamic indication of SRS resources on FR1, but on FR2 The dynamic SRS resource indication is not supported for SRS transmission, so that more terminal devices can support SRS transmission according to the SRS resource dynamic indication.

S220. The terminal device performs SRS transmission according to the first information.

For example, the terminal device performs SRS transmission on the at least one SRS resource in the first SRS resource set; and/or

The terminal device performs SRS transmission on at least one first SRS port of the third SRS resource.

Optionally, the terminal device may perform SRS transmission according to the resource type of the first SRS resource set.

For example, if the resource type of the first SRS resource set is periodic or semi-persistent, the terminal device may perform SRS transmission according to the period and time slot offset of the SRS signal.

For another example, the resource type of the first SRS resource set is aperiodic, and the terminal device may perform SRS transmission based on trigger signaling (for example, DCI) of the network device.

Hereinafter, the 2T4R antenna switching is taken as an example to describe the specific implementation of the first information, but the present application is not limited thereto.

Specifically, the network device configures the first SRS resource set for the terminal device through RRC signaling for 2T4R antenna switching, wherein the first SRS resource set includes two SRS resources (respectively denoted as SRS resource A and SRS resource B), each SRS resource includes 2 SRS ports (respectively marked as SRS port A and SRS port B).

Optionally, the usage (usage) domain (field or field) in the RRC information element (Information Element, IE) corresponding to the first SRS resource set is set to "antennaSwitching", indicating that the first SRS resource set is used for the antenna switch.

Optionally, the resourceType in the SRS-ResourceSet parameter corresponding to the first SRS resource set is configured as one of the following: aperiodic (aperiodic), semi-persistent (semiPersistent), and periodic (periodic).

When the terminal device performs SRS transmission, it performs SRS transmission according to the two SRS resources.

Embodiment one:

In the first embodiment, the network device can indicate the transmission status of the SRS resource granularity.

The terminal device receives first information sent by the network device through MAC CE signaling, the first information includes first indication information, and the first indication information is used to indicate one of the following:

Example 1: The first indication information indicates that SRS resource A is used for transmission.

Example 2: The first indication information indicates that the SRS resource B is not used for transmission.

Example 3: The first indication information indicates that SRS resource A is used for transmission, and SRS resource B is not used for transmission.

Then, when the terminal device performs SRS transmission, it only performs SRS transmission according to SRS resource A, or in other words, only transmits SRS resource A.

According to the transmission state indicated by the first indication information, the transmission performed by the terminal device according to the first SRS resource set is equivalent to 2T2R transmission.

For example, when the terminal device expects to change from 2T4R antenna switching to 2T2R antenna switching (for example, due to power consumption considerations), the terminal device may indicate through the second information that the desired antenna switching configuration is 2T2R, and the network device may pass The first information indicates that one of the two SRS resources is not used for SRS transmission, that is, indicates the change of the transmission state of the SRS resource, or the transmission state of the SRS resource after the change, without reconfiguring the SRS resource set through RRC signaling parameter, which is beneficial to reduce signaling overhead.

For another example, when the terminal device expects to change from 2T4R antenna switching to 2T2R antenna switching (for example, due to power consumption considerations), the terminal device may use the third information to indicate that the SRS resource not recommended for transmission is SRS resource B, Or the SRS resource suggested for transmission is SRS resource A, or, only one of the two SRS resources is suggested for transmission, then the network device may indicate one of the two SRS resources through the first information (such as SRS Resource A) is used for SRS transmission, that is, indicating the change of the transmission state of the SRS resource, or the transmission state of the SRS resource after the change, without reconfiguring the SRS resource set parameters through RRC signaling, which is conducive to reducing signaling overhead.

Optionally, the terminal device may also receive a first serving cell list configured by the network device through RRC signaling, where the first serving cell list is used to indicate serving cell 1 and serving cell 3 . If the first information further includes second indication information for indicating serving cell 1, the first indication information is applied to all serving cells in the serving cell list corresponding to serving cell 1, that is, to serving cell 1 and serving cell 3 .

Optionally, for the foregoing example 1, the first indication information may be indicated in the following manner:

Mode 1: Suppose the ID of the first SRS resource set is Z, and SRS resource A is the first SRS resource in the SRS resource set. Then, the first indication information may indicate that the first resource in the SRS resource set with the ID of Z in the serving cell 3 is used for SRS transmission.

Method 2: Suppose the ID of the first SRS resource set is Z, the ID of SRS resource A is ID1, and the ID of SRS resource B is DI2. Then, the first indication information may indicate that the SRS resource whose ID is ID1 in the serving cell 3 is used for SRS transmission.

That is, the first indication information may be used to indicate the number of the SRS resource used for SRS transmission in the corresponding SRS resource set, or the ID of the SRS resource.

Optionally, for the foregoing example 2, the first indication information may be indicated in the following manner:

Mode 1: Suppose the ID of the first SRS resource set is Z, and SRS resource B is the second SRS resource in the SRS resource set. Then, the first indication information may indicate that the second resource in the SRS resource set with the ID of Z in the serving cell 3 is not used for SRS transmission.

Method 2: Suppose the ID of the first SRS resource set is Z, the ID of SRS resource B is ID2, and the ID of SRS resource B is DI2. Then, the first indication information may indicate that the SRS resource whose ID is ID2 in the serving cell 3 is not used for SRS transmission.

That is, the first indication information may be used to indicate the number of the SRS resource not used for SRS transmission in the corresponding SRS resource set, or the ID of the SRS resource.

For the foregoing example 1, the MAC CE signaling may include:

Indication information of SRS resource A, indicating that SRS resource A is used for SRS transmission.

Optionally, the first information may also include at least one of the following information:

The cell indication information, for example, may be a cell ID, which is used to indicate the cell corresponding to the first indication information;

The BWP indication information, for example, may be a BWP ID, which is used to indicate the uplink BWP corresponding to the first indication information;

The indication information of the first SRS resource set, such as the SRS resource set ID.

Wherein, the cell indication information and the BWP indication information may correspond to the foregoing second indication information.

FIG. 4 is a schematic diagram of the format of a MAC CE according to Example 1.

It should be understood that the positions and sizes of the various fields (or domains) in the MAC CE shown below are only examples, which can be designed and adjusted according to the size of the information actually carried, and some domains in the MAC CE may not exist , such as cell ID domain, BWP ID domain, etc., which are not limited in this application.

Among them, the cell ID in Figure 4 corresponds to the previous cell indication information, the BWP ID corresponds to the previous BWP indication information, the SRS resource set ID corresponds to the indication information of the first SRS resource set, the SRS resource ID corresponds to the indication information of SRS resource A, and R Indicates a reserved bit. Optionally, this R can also be used to indicate other information.

Optionally, the usage of the SRS resource set indicated by the SRS resource set ID is set to "antennaSwitching".

Optionally, if the first SRS resource set includes more SRS resources, for example, in 1T4R, one SRS resource set can contain 4 SRS resources, and there are multiple SRS resources for transmission, then the MAC CE of the example in Figure 4 The format can contain multiple SRS resource ID fields. Fig. 5 is a schematic diagram of the format of a MAC CE indicating that two SRS resources are used for transmission as an example.

Optionally, if there are multiple SRS resource sets, the MAC CE format can be similarly extended. Taking two SRS resource sets as an example, as shown in Figure 6, the MAC CE can include:

SRS resource set ID 1, corresponding to the first SRS resource set indication information;

SRS resource set ID 2, corresponding to the second SRS resource set indication information;

SRS Resource ID 1-X, used to indicate that the SRS resource in the SRS resource set indicated by SRS resource set ID 1 is used for transmission.

SRS Resource ID 2-X is used to indicate that the SRS resource in the SRS resource set indicated by SRS resource set ID 2 is used for transmission.

It should be understood that the number of SRS resources used for transmission in each SRS resource set shown in FIG. 6 is only an example, which is not limited in the present application.

For the aforementioned example 2, the MAC CE signaling may include:

Indication information of SRS resource B, indicating that SRS resource B is used for SRS transmission.

For example 2, the network device can use the similar MAC CE format in Figure 4 to Figure 6 to indicate the SRS resources not used for transmission, the difference is that the SRS resource ID corresponds to the indication information of SRS resource B, that is, the SRS not used for SRS transmission The ID of the resource.

For the aforementioned example 3, the following contents may be included in the MAC CE signaling:

The indication information of SRS resource A, which indicates that SRS resource A is used for SRS transmission;

The indication information of SRS resource B indicates that SRS resource B is not used for SRS transmission.

Optionally, the MAC CE signaling may also include at least one of the following information:

In Example 3, the network device may indicate the SRS resources used for SRS transmission and those not used for SRS transmission in an SRS resource set in a bitmap manner.

Fig. 7 is a schematic diagram of the format of MAC CE indicating SRS resources used for SRS transmission and not used for SRS transmission through a bitmap. Wherein, the cell ID corresponds to the above cell indication information;

The BWP ID corresponds to the BWP indication information above;

The SRS resource set ID corresponds to the indication information of the first SRS resource set, optionally, the usage of the SRS resource set indicated by the SRS resource set ID is set to 'antennaSwitching';

C1-C8 respectively correspond to the first bitmap above. Indicates whether the SRS resources in an SRS resource set are used for transmission by means of a bitmap;

R represents a reserved bit, and optionally, this R may also be used to indicate other information.

Optionally, Ci corresponds to the i-th SRS resource in the first SRS resource set. For another example, Ci corresponds to the 8-ith SRS resource in the first SRS resource set.

Optionally, Ci is related to the size of the SRS resource ID. For example, the IDs corresponding to the SRS resources in the first SRS resource set correspond to C1-C8 in descending order. For another example, IDs corresponding to SRS resources in the first SRS resource set correspond to C1-C8 in ascending order.

Optionally, C1 corresponds to the SRS resource with the smallest ID in the first SRS resource set, and C8 corresponds to the SRS resource with the largest ID in the first SRS resource set.

Optionally, C1 corresponds to the SRS resource with the largest ID in the first SRS resource set, and C8 corresponds to the SRS resource with the smallest ID in the first SRS resource set.

Wherein, the value of Ci is used to indicate whether the corresponding SRS resource is used for transmission, for example, a value of 1 indicates that the corresponding SRS resource is used for transmission, and a value of 0 indicates that the corresponding SRS resource is not used for transmission, or the value of A value of 1 indicates that the corresponding SRS resource is not used for transmission, and a value of 1 indicates that the corresponding SRS resource is used for transmission.

It should be understood that the actual number of bits carrying information in C1-C8 may be determined according to the number of SRS resources included in the first SRS resource set. For example, if the first SRS resource set includes 4 SRS resources, the four bits of C1-C8 (for example, C1-C4, or C5-C8) carry information, and the other bits are ignored, or in other words, do not need read.

It should be understood that the sequence of bits in FIG. 7 is only an example, and the sequence of C8-C1 may also be used, which is not limited in the present application.

In some embodiments, the MAC CE may include a first indication field, and all SRS resources in the first SRS resource set are used for transmission, or none are used for transmission.

As an example, the first indication field can be implemented by an R field in the MAC CE. In this case, the R field can be recorded as an F field, and the value of the F field is used to indicate all SRSs in the first SRS resource set Resources are either used for transfers, or neither are used for transfers.

For example, taking the first value indicates that all SRS resources in the first SRS resource set are used for transmission, and taking the second value indicates that all SRS resources in the first SRS resource set are not used for transmission.

Optionally, the F field is 1 bit, the first value is 1, and the second value is 0.

Figure 8 is a schematic diagram of the MAC CE format including the first indication domain (i.e. the F domain). When all the SRS resources in an SRS resource set are used for transmission or are not used for transmission, the MAC CE may not include the words in Figure 7. Section 3 (oct3).

In some other embodiments, the F field takes a first value to indicate that all SRS resources in the first SRS resource set are used for transmission. In this case, the MAC CE may take a second value as shown in FIG. 8 to indicate that the first SRS resource In an SRS resource set, there are SRS resources used for transmission, or there are SRS resources not used for transmission. Further, bitmaps can be used to indicate which SRS resources are used for transmission and which SRS resources are not used for transmission. In this case, the MAC CE format can be as shown in Figure 9, wherein, the meaning of each bit in byte 3 refers to Figure 7 related instructions in . Alternatively, the MAC CE format can also be as shown in the foregoing Figure 4 or Figure 5.

It should be understood that the positions of the F domains in FIG. 8 and FIG. 9 are only examples, and the F domain can also be implemented by using other R domains in the MAC CE, which is not limited in this application.

Optionally, if it is necessary to indicate whether the SRS resources in the multiple SRS resource sets are used for SRS transmission in a bitmap manner, it can be extended based on the MAC CE format in Figure 8 and Figure 9 . Taking two SRS resource sets as an example, as shown in Figure 10, each SRS resource set corresponds to a bitmap, wherein C1-C8 in the row corresponding to byte 3 (Oct3) is used to indicate the SRS resource set ID 1 indicates Whether the SRS resource in the SRS resource set is used for transmission, C1-C8 in the row corresponding to byte 5 (Oct5) is used to indicate whether the SRS resource in the SRS resource set indicated by SRS resource set ID 2 is used for transmission. As shown in Figure 11, when the value of the F field is the second value, each SRS resource set corresponds to a bitmap, wherein C1-C8 in the row corresponding to byte 3 (Oct3) is used to indicate SRS resource set ID 1 Whether the SRS resource in the indicated SRS resource set is used for transmission, C1-C8 in the row corresponding to byte 5 (Oct5) is used to indicate whether the SRS resource in the SRS resource set indicated by SRS resource set ID 2 is used for transmission.

Embodiment two:

In the second embodiment, the network device can perform SRS port granularity transmission state indication.

Example 4: The first indication information indicates the SRS port A used for transmission.

Example 5: The first indication information indicates the SRS port B not used for transmission.

Example 6: The first indication information indicates SRS port A used for transmission, and indicates SRS port B not used for transmission.

Then, when the terminal device transmits the SRS, it only transmits the SRS from the SRS port A.

According to the SRS port transmission state indicated by the first indication information, the SRS transmission performed by the terminal device according to the first SRS resource set is equivalent to 1T2R transmission. That is, it is equivalent to the SRS resource of a single port for each transmission.

For example, when the terminal device expects to change from 2T4R antenna switching to 1T2R antenna switching (for example, due to power consumption considerations), the terminal device may indicate through the second information that the desired antenna switching configuration is 1T2R, and the network device may pass The first information indicates that an SRS port in the SRS resource is not used for SRS transmission, that is, indicates a change in the transmission state of the SRS port, or the transmission state of the SRS port after the change, without reconfiguring the SRS resource set parameters through RRC signaling, It is beneficial to reduce signaling overhead.

For another example, when the terminal device expects to change from 2T4R antenna switching to 1T2R antenna switching (for example, due to power consumption considerations), the terminal device may use the third information to indicate that the SRS port that is not recommended for transmission is SRS resource B, Or the SRS port suggested for transmission is SRS port A, or, it is suggested that only one of the two SRS ports is used for transmission, then the network device can indicate one of the two SRS ports through the first information (such as SRS Port A) is used for SRS transmission, that is, indicating the change of the transmission state of the SRS port, or the transmission state of the SRS port after the change, without reconfiguring the SRS resource set parameters through RRC signaling, which is conducive to reducing signaling overhead.

Optionally, the terminal device may also receive a first serving cell list configured by the network device through RRC signaling, where the first serving cell list is used to indicate serving cell 1 and serving cell 3 . If the first information further includes second indication information for indicating serving cell 1, the first indication information is applicable to all serving cells in the serving cell list corresponding to serving cell 1, that is, serving cell 1 and serving cell 3.

In some embodiments, it is assumed that the ID of the first SRS resource set is Z. Then, the first indication information may indicate that the SRS port A of the SRS resource in the SRS resource set with the ID of Z in the serving cell 3 is used for SRS transmission.

For the aforementioned example 4, the MAC CE signaling may include:

Indication information of SRS port A, indicating that SRS port A is used for SRS transmission.

Indication information of the SRS resource corresponding to the SRS port, such as the SRS resource ID;

FIG. 12 is a schematic diagram of the format of a MAC CE according to Example 4.

Among them, the cell ID in Figure 12 corresponds to the previous cell indication information, the BWP ID corresponds to the previous BWP indication information, the SRS resource set ID corresponds to the indication information of the first SRS resource set, the SRS port indication corresponds to the indication information of the SRS port A, R Indicates a reserved bit. Optionally, this R can also be used to indicate other information.

Optionally, the usage of the SRS resource set indicated by the SRS resource set ID is set to 'antennaSwitching';

Optionally, if there are multiple SRS resource sets, the MAC CE format in Figure 12 can be similarly extended, taking two SRS resource sets as an example, as shown in Figure 13, the MAC CE can include:

The SRS port indication 1 is used to indicate the SRS port used for transmission of the SRS resource in the SRS resource set indicated by the SRS resource set ID 1.

The SRS port indication 2 is used to indicate the SRS port used for transmission of the SRS resource in the SRS resource set indicated by the SRS resource set ID 2.

For the foregoing example 5, the first information may include:

Indication information of SRS port B, indicating that SRS port B is used for SRS transmission.

Indication information of the SRS resource corresponding to the SRS port B, such as the SRS resource ID;

For Example 5, the MAC CE format similar to that shown in Figure 12 to Figure 13 can be used to indicate the SRS port not used for transmission, the difference is that the SRS port indication corresponds to the SRS port not used for SRS transmission.

For the preceding example 6, the MAC CE signaling contains the following content:

Indication information of SRS port A, that is, indicating that SRS port A is used for SRS transmission;

The indication information of the SRS port B indicates that the SRS port B is not used for SRS transmission.

SRS resource indication information corresponding to SRS port A and SRS port B, such as SRS resource ID;

In Example 6, the network device may indicate the SRS ports used for SRS transmission and those not used for SRS transmission in the SRS resource in a bitmap manner.

In some implementations, Example 6 may use the MAC CE format indication in FIG. 14 . In this case, the meanings of the fields in Figure 14 are as follows:

The cell ID corresponds to the cell indication information above;

The BWP ID corresponds to the BWP indication information above;

The SRS resource set ID corresponds to the indication information of the first SRS resource set;

P1～P8 respectively correspond to the second bitmap above, and indicate whether all SRS ports included in an SRS resource are used for transmission through the bitmap mode;

For example, Pi corresponds to the i-th SRS port in the SRS resource. For example, Pi corresponds to the 8-ith SRS port in the SRS resource.

Among them, the value of Pi is used to indicate whether the corresponding SRS port is used for transmission, for example, a value of 1 indicates that the corresponding SRS port is used for transmission, a value of 0 indicates that the corresponding SRS port is not used for transmission, or a value of 1 indicates that the corresponding SRS port is not used for transmission, and a value of 1 indicates that the corresponding SRS port is used for transmission.

It should be understood that the number of bits actually carrying information in P1-P8 may be determined according to the number of SRS ports included in the SRS resource. For example, if the SRS resource includes 4 SRS ports, four bits of P1-P8 (for example, P1-P4, or P5-P8) carry information, and other bits are ignored, or do not need to be interpreted.

It should be understood that the sequence of bits in FIG. 14 is only an example, and the sequence of P8-P1 may also be used, which is not limited in the present application.

In some embodiments, the MAC CE signaling may include a second indication field, which is used to indicate that all SRS ports included in the SRS resource are used for transmission, or none of them are used for transmission.

For example, the second indication field may be an R field in the MAC CE. In this case, the R field may also be recorded as an F field, and the value of the F field is used to indicate that all SRS ports of the SRS resource are used for transmission, or neither is used for transmission.

For example, taking the first value indicates that all SRS ports included in the SRS resource are used for transmission, and taking the second value indicates that all SRS ports included in the SRS resource are not used for transmission. Optionally, the F field is 1 bit, the first value is 1, and the second value is 0.

The MAC CE including the second indication field (ie, the F field) may also adopt the format in FIG. 8 .

In some other embodiments, the F field takes the first value to indicate that all SRS ports of the SRS resource are used for transmission. In this case, the MAC CE can be as shown in FIG. The SRS port used for transmission, or there is an SRS port not used for transmission. In this case, the MAC CE format can be as shown in Figure 16.

It should be understood that the positions of the F domains in FIG. 15 and FIG. 16 are only examples, and the F domain can also be implemented by using other R domains in the MAC CE, which is not limited in this application.

Optionally, if it is necessary to indicate whether the SRS ports in multiple SRS resource sets are used for SRS transmission in a bitmap manner, it can be extended based on the MAC CE format in Figure 15 and Figure 16 . Taking two SRS resource sets as an example, as shown in Figure 17, each SRS resource set corresponds to a bitmap, wherein P1-P8 in the row corresponding to byte 3 (Oct3) is used to indicate the SRS resource set ID 1 indicates Whether the SRS port included in the SRS resource in the SRS resource set is used for transmission, P1~P8 in the row corresponding to byte 5 (Oct5) is used to indicate whether the SRS port of the SRS resource in the SRS resource set indicated by SRS resource set ID 2 is for transmission. As shown in Figure 18, when the value of the F field is the second value, each SRS resource set corresponds to a bitmap, wherein P1-P8 in the row corresponding to byte 3 (Oct3) is used to indicate SRS resource set ID 1 Whether the SRS port of the SRS resource in the indicated SRS resource set is used for transmission, P1~P8 in the row corresponding to byte 5 (Oct5) is used to indicate the SRS port of the SRS resource in the SRS resource set indicated by SRS resource set ID 2 Whether to use for transmission.

It should be understood that Embodiment 1 and Embodiment 2 above may be implemented independently, or may also be implemented in combination, for example, the foregoing Examples 1 to 3 may be combined with any of Examples 4 to 6.

When combined with implementation, the MAC CE format can carry the information in the above two embodiments, for example, the indication information of the SRS resource and the SRS port indication. In this case, the MAC CE format can be flexibly adjusted according to the information content that needs to be carried, for example, The format of the MAC CE carrying the SRS resource indication information and the SRS port indication information can be shown in Figure 19. It should be understood that the content of byte 3 in Figure 19 can be replaced by byte 3 in Figure 7, byte 3 in Figure 19 The content of 4 can be replaced by byte 3 in Figure 14.

To sum up, the network device can dynamically indicate the changed SRS resource set parameters through the first information indicating the transmission status of the SRS resource set parameters, for example, the SRS resource set parameters that need to be changed due to the change of the antenna switching mechanism, without By reconfiguring SRS resource set parameters through RRC, dynamic indication of SRS resources can be realized, which helps reduce the delay of antenna switching mechanism change, realizes rapid adjustment of SRS resource set parameters, and helps reduce signaling overhead.

The method embodiment of the present application is described in detail above in conjunction with FIG. 3 to FIG. 19 , and the device embodiment of the present application is described in detail below in conjunction with FIG. 20 to FIG. 24 . It should be understood that the device embodiment and the method embodiment correspond to each other, similar to The description can refer to the method embodiment.

Fig. 20 shows a schematic block diagram of a terminal device 400 according to an embodiment of the present application. As shown in Figure 20, the terminal device 400 includes:

The communication unit 410 is configured to receive first information sent by the network device, where the first information includes first indication information, and the first indication information is used to indicate at least one of the following:

In some embodiments of the present application, the first information is carried by at least one of the following:

Media access control control element MAC CE, downlink control information DCI.

In some embodiments of the present application, the communication unit 410 is also used to:

Receive first configuration information sent by the network device, where the first configuration information is used to configure at least one SRS resource set, where the at least one SRS resource set includes the first SRS resource set.

In some embodiments of the present application, the resource type corresponding to the first SRS resource set in the first configuration information is aperiodic; or,

The resource type corresponding to the first SRS resource set in the first configuration information is one of the following: semi-persistent, periodic; or

The resource type corresponding to the first SRS resource set in the first configuration information is one of the following: aperiodic, semi-persistent, and periodic.

In some embodiments of the present application, the first indication information includes a first indication field, and the first indication field is used to indicate that all SRS resources in the first SRS resource set are not used for SRS transmission, or, the All SRS resources in the first SRS resource set are used for SRS transmission.

In some embodiments of the present application, the first indication information includes:

Indication information of the at least one first SRS resource, and/or,

Indication information of the at least one second SRS resource.

In some embodiments of the present application, the indication information of the at least one first SRS resource includes: an ID of the at least one first SRS resource;

The indication information of the at least one second SRS resource includes: an ID of the at least one second SRS resource.

In some embodiments of the present application, the first indication information indicates the at least one first SRS resource and/or the at least one second SRS resource in a bitmap manner.

In some embodiments of the present application, the first indication information includes a first bitmap, and the first bitmap includes a plurality of bits, each bit corresponds to an SRS resource in the first SRS resource set, and each bit The value of is used to indicate whether the corresponding SRS resource is used for SRS transmission.

In some embodiments of the present application, the first indication information includes at least one of the following:

In some embodiments of the present application, the indication information of the at least one first SRS port includes: the port number of the at least one first SRS port;

The indication information of the at least one second SRS port includes: a port number of the at least one second SRS port.

In some embodiments of the present application, the first indication information indicates the at least one first SRS port and/or the at least one second SRS port in a bitmap manner.

In some embodiments of the present application, the first indication information includes a second bitmap, and the second bitmap includes a plurality of bits, each bit corresponds to an SRS port of the third SRS resource, and each bit The value is used to indicate whether the corresponding SRS port of the third SRS resource is used for SRS transmission.

In some embodiments of the present application, the first indication information includes a second indication field, and the second indication field is used to indicate that all SRS ports of the third SRS resource in the first SRS resource set are not used for SRS transmission , or, all SRS ports of the third SRS resource are used for SRS transmission.

In some embodiments of the present application, the first indication information further includes:

Indication information of the at least one third SRS resource.

In some embodiments of the present application, the first indication information further includes indication information of the first SRS resource set.

In some embodiments of the present application, the first information further includes second indication information, and the second indication information is used to indicate the serving cell corresponding to the first indication information and/or the serving cell corresponding to the first indication information. Corresponding bandwidth part BWP.

In some embodiments of the present application, if the serving cell indicated by the second indication information belongs to the first serving cell list, the first indication information corresponds to all serving cells in the first serving cell list, wherein the The first serving cell list is used to indicate at least one serving cell.

In some embodiments of the present application, the first indication information corresponds to all carriers in the same frequency band.

Sending second information to the network device, where the second information includes third indication information, where the third indication information is used to indicate at least one of the following: recommended antenna switching configuration, recommended number of receiving antennas, recommended number of transmit antennas.

In some embodiments of the present application, the second information is carried by at least one of the following:

MAC CE, UCI, physical uplink control channel PUCCH.

In some embodiments of the present application, the second information further includes fourth indication information, and the fourth indication information is used to indicate the serving cell corresponding to the third indication information/or the serving cell corresponding to the third indication information The BWP.

Send third information to the network device, where the third information includes fifth indication information, where the fifth indication information is used to indicate at least one of the following:

SRS resources not used for transmission suggested by the terminal device;

SRS ports not used for transmission suggested by the terminal device;

An SRS resource set for transmission suggested by the terminal device;

SRS resources for transmission suggested by the terminal device;

The SRS port suggested by the terminal device for transmission.

In some embodiments of the present application, the third information is carried by at least one of the following:

MAC CE, UCI, physical uplink control channel PUCCH.

In some embodiments of the present application, the third information further includes sixth indication information, and the sixth indication information is used to indicate the serving cell corresponding to the fifth indication information and/or the sixth indication information. Corresponding BWP.

Reporting first capability information to the network device, where the first capability information indicates that the terminal device supports SRS transmission according to at least one of the first information, antenna switching dynamic indication, and SRS resource dynamic indication.

In some embodiments of the present application, the first capability information is sent through radio resource control RRC signaling and/or MAC CE.

In some embodiments of the present application, the first capability information is also used to indicate the target frequency band and/or the target carrier, and the serving cell on the target frequency band and/or the serving cell on the target carrier can be configured in the same service in the district list.

In some embodiments of the present application, the configuration granularity of the first capability information includes at least one of the following:

perform SRS transmission on the at least one SRS resource in the first set of SRS resources; and/or

performing SRS transmission on at least one first SRS port of the third SRS resource.

Optionally, in some embodiments, the above-mentioned communication unit may be a communication interface or a transceiver, or an input-output interface of a communication chip or a system-on-chip. The aforementioned processing unit may be one or more processors.

It should be understood that the terminal device 400 according to the embodiment of the present application may correspond to the terminal device in the method embodiment of the present application, and the above-mentioned and other operations and/or functions of each unit in the terminal device 400 are to realize the For the sake of brevity, the corresponding process of the terminal device in the shown method 200 will not be repeated here.

Fig. 21 is a schematic block diagram of a network device according to an embodiment of the present application. The network device 500 of FIG. 5 includes:

A communication unit 510, configured to send first information to the terminal device, where the first information includes first indication information, and the first indication information is used to indicate at least one of the following:

Media access control control element MAC CE, downlink control information DCI.

In some embodiments of the present application, the communication unit 510 is also used to:

Sending first configuration information to the terminal device, where the first configuration information is used to configure at least one SRS resource set, where the at least one SRS resource set includes the first SRS resource set.

Indication information of the at least one first SRS resource, and/or,

Indication information of the at least one second SRS resource.

In some embodiments of the present application, the first indication information further includes: indication information of the at least one third SRS resource.

In some embodiments of the present application, the first indication information further includes indication information of the first SRS resource set. 17. The network device according to any one of claims 1-16, wherein the first information further includes second indication information, and the second indication information is used to indicate the The corresponding serving cell and/or the bandwidth part BWP corresponding to the first indication information.

receiving second information sent by the terminal device, where the second information includes third indication information, where the third indication information is used to indicate at least one of the following: a suggested antenna switching configuration, a suggested number of receiving antennas, Recommended number of transmit antennas.

MAC CE, UCI, physical uplink control channel PUCCH.

In some embodiments of the present application, the communication unit is also used for:

receiving third information sent by the terminal device, where the third information includes fifth indication information, where the fifth indication information is used to indicate at least one of the following:

SRS resources not used for transmission suggested by the terminal device;

SRS ports not used for transmission suggested by the terminal device;

An SRS resource set for transmission suggested by the terminal device;

SRS resources for transmission suggested by the terminal device;

The SRS port suggested by the terminal device for transmission.

MAC CE, UCI, physical uplink control channel PUCCH.

receiving first capability information reported by the terminal device, where the first capability information indicates that the terminal device supports SRS transmission according to at least one of the first information, an antenna switching dynamic indication, and an SRS resource dynamic indication.

receiving an SRS on said at least one SRS resource in said first set of SRS resources; and/or

An SRS is received on at least one first SRS port of the third SRS resource.

It should be understood that the network device 500 according to the embodiment of the present application may correspond to the network device in the method embodiment of the present application, and the above-mentioned and other operations and/or functions of each unit in the network device 500 are to realize the For the sake of brevity, the corresponding flow of the network device in the shown method 200 is not repeated here.

FIG. 22 is a schematic structural diagram of a communication device 600 provided in an embodiment of the present application. The communication device 600 shown in FIG. 22 includes a processor 610, and the processor 610 can call and run a computer program from a memory, so as to implement the method in the embodiment of the present application.

Optionally, as shown in FIG. 22 , the communication device 600 may further include a memory 620 . Wherein, the processor 610 can invoke and run a computer program from the memory 620, so as to implement the method in the embodiment of the present application.

Wherein, the memory 620 may be an independent device independent of the processor 610 , or may be integrated in the processor 610 .

Optionally, as shown in FIG. 22, the communication device 600 may further include a transceiver 630, and the processor 610 may control the transceiver 630 to communicate with other devices, specifically, to send information or data to other devices, or receive other Information or data sent by the device.

Wherein, the transceiver 630 may include a transmitter and a receiver. The transceiver 630 may further include antennas, and the number of antennas may be one or more.

Optionally, the communication device 600 may specifically be the network device of the embodiment of the present application, and the communication device 600 may implement the corresponding processes implemented by the network device in each method of the embodiment of the present application. For the sake of brevity, details are not repeated here. .

Optionally, the communication device 600 may specifically be the mobile terminal/terminal device of the embodiment of the present application, and the communication device 600 may implement the corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiment of the present application, for the sake of brevity , which will not be repeated here.

FIG. 23 is a schematic structural diagram of a chip according to an embodiment of the present application. The chip 700 shown in FIG. 23 includes a processor 710, and the processor 710 can call and run a computer program from a memory, so as to implement the method in the embodiment of the present application.

Optionally, as shown in FIG. 23 , the chip 700 may further include a memory 720 . Wherein, the processor 710 can invoke and run a computer program from the memory 720, so as to implement the method in the embodiment of the present application.

Wherein, the memory 720 may be an independent device independent of the processor 710 , or may be integrated in the processor 710 .

Optionally, the chip 700 may also include an input interface 730 . Wherein, the processor 710 can control the input interface 730 to communicate with other devices or chips, specifically, can obtain information or data sent by other devices or chips.

Optionally, the chip 700 may also include an output interface 740 . Wherein, the processor 710 can control the output interface 740 to communicate with other devices or chips, specifically, can output information or data to other devices or chips.

Optionally, the chip can be applied to the network device in the embodiment of the present application, and the chip can implement the corresponding processes implemented by the network device in the methods of the embodiment of the present application. For the sake of brevity, details are not repeated here.

Optionally, the chip can be applied to the mobile terminal/terminal device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the mobile terminal/terminal device in the various methods of the embodiments of the present application. For the sake of brevity, here No longer.

It should be understood that the chip mentioned in the embodiment of the present application may also be called a system-on-chip, a system-on-chip, a system-on-a-chip, or a system-on-a-chip.

FIG. 24 is a schematic block diagram of a communication system 900 provided by an embodiment of the present application. As shown in FIG. 23 , the communication system 900 includes a terminal device 910 and a network device 920 .

Wherein, the terminal device 910 can be used to realize the corresponding functions realized by the terminal device in the above method, and the network device 920 can be used to realize the corresponding functions realized by the network device in the above method. .

It should be understood that the processor in the embodiment of the present application may be an integrated circuit chip, which has a signal processing capability. In the implementation process, each step of the above-mentioned method embodiments may be completed by an integrated logic circuit of hardware in a processor or instructions in the form of software. The above-mentioned processor can 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 available Program logic devices, discrete gate or transistor logic devices, discrete hardware components. Various methods, steps, and logic block diagrams disclosed in the embodiments of the present application may be implemented or executed. 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 directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, register. The storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware.

It can be understood that the memory in the embodiments of the present application may be a volatile memory or a nonvolatile memory, or may include both volatile and nonvolatile memories. Among them, the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electronically programmable Erase Programmable Read-Only Memory (Electrically EPROM, EEPROM) or Flash. The volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of illustration and not limitation, many forms of RAM are available, such as Static Random Access Memory (Static RAM, SRAM), Dynamic Random Access Memory (Dynamic RAM, DRAM), Synchronous Dynamic Random Access Memory (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (Synchlink DRAM, SLDRAM ) and Direct Memory Bus Random Access Memory (Direct Rambus RAM, DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but not be limited to, these and any other suitable types of memory.

It should be understood that the above-mentioned memory is illustrative but not restrictive. For example, the memory in the embodiment of the present application may also be a static random access memory (static RAM, SRAM), a dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM), etc. That is, the memory in the embodiments of the present application is intended to include, but not be limited to, these and any other suitable types of memory.

The embodiment of the present application also provides a computer-readable storage medium for storing computer programs.

Optionally, the computer-readable storage medium can be applied to the network device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the network device in the methods of the embodiments of the present application. For brevity, here No longer.

Optionally, the computer-readable storage medium can be applied to the mobile terminal/terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the mobile terminal/terminal device in the various methods of the embodiments of the present application , for the sake of brevity, it is not repeated here.

The embodiment of the present application also provides a computer program product, including computer program instructions.

Optionally, the computer program product may be applied to the network device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application. For the sake of brevity, the Let me repeat.

Optionally, the computer program product can be applied to the mobile terminal/terminal device in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the mobile terminal/terminal device in the methods of the embodiments of the present application, For the sake of brevity, details are not repeated here.

The embodiment of the present application also provides a computer program.

Optionally, the computer program can be applied to the network device in the embodiment of the present application. When the computer program is run on the computer, the computer executes the corresponding process implemented by the network device in each method of the embodiment of the present application. For the sake of brevity , which will not be repeated here.

Optionally, the computer program can be applied to the mobile terminal/terminal device in the embodiment of the present application. When the computer program is run on the computer, the computer executes each method in the embodiment of the present application to be implemented by the mobile terminal/terminal device For the sake of brevity, the corresponding process will not be repeated here.

Those skilled in the art can appreciate that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present application.

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

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

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

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

If the functions described above are realized in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disc and other media that can store program codes. .

The above is only a specific implementation of the application, but the scope of protection of the application is not limited thereto. Anyone familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the application. Should be covered within the protection scope of this application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

A method for wireless communication, comprising:

The terminal device receives the first information sent by the network device, where the first information includes first indication information, and the first indication information is used to indicate at least one of the following:

At least one first SRS resource in the first sounding reference signal SRS resource set is used for SRS transmission; or

at least one second SRS resource in the first set of SRS resources is not used for SRS transmission; or

at least one first SRS port of at least one third SRS resource in the first set of SRS resources is used for SRS transmission; or

At least one second SRS port of at least one third SRS resource in the first SRS resource set is not used for SRS transmission.
The method according to claim 1, wherein the first information is carried by at least one of the following:

Media access control control element MAC CE, downlink control information DCI.
The method according to claim 1 or 2, characterized in that the method further comprises:

The terminal device receives first configuration information sent by the network device, where the first configuration information is used to configure at least one SRS resource set, where the at least one SRS resource set includes the first SRS resource set.
The method according to claim 3, wherein the resource type corresponding to the first SRS resource set in the first configuration information is aperiodic; or,

The resource type corresponding to the first SRS resource set in the first configuration information is one of the following: semi-persistent, periodic; or

The resource type corresponding to the first SRS resource set in the first configuration information is one of the following: aperiodic, semi-persistent, and periodic.
The method according to any one of claims 1-4, wherein the first indication information includes a first indication field, and the first indication field is used to indicate all SRSs in the first SRS resource set None of the resources are used for SRS transmission, or all the SRS resources in the first SRS resource set are used for SRS transmission.
The method according to any one of claims 1-4, wherein the first indication information includes:

Indication information of the at least one first SRS resource, and/or,

Indication information of the at least one second SRS resource.
The method according to claim 6, characterized in that,

The indication information of the at least one first SRS resource includes: the identification ID of the at least one first SRS resource;

The indication information of the at least one second SRS resource includes: an ID of the at least one second SRS resource.
The method according to any one of claims 1-4, wherein the first indication information indicates the at least one first SRS resource and/or the at least one second SRS resource in a bitmap manner.
The method according to claim 8, wherein the first indication information includes a first bitmap, and the first bitmap includes a plurality of bits, and each bit corresponds to an SRS in the first SRS resource set. Resource, the value of each bit is used to indicate whether the corresponding SRS resource is used for SRS transmission.
The method according to any one of claims 1-9, wherein the first indication information includes at least one of the following:

Indication information of the at least one first SRS port in the at least one third SRS resource;

Indication information of the at least one second SRS port in the at least one third SRS resource.
The method according to claim 10, characterized in that,

The indication information of the at least one first SRS port includes: the port number of the at least one first SRS port;

The indication information of the at least one second SRS port includes: a port number of the at least one second SRS port.
The method according to any one of claims 1-9, wherein the first indication information indicates the at least one first SRS port and/or the at least one second SRS port in a bitmap manner.
The method according to claim 12, wherein the first indication information includes a second bitmap, the second bitmap includes a plurality of bits, and each bit corresponds to an SRS port of the third SRS resource , the value of each bit is used to indicate whether the corresponding SRS port of the third SRS resource is used for SRS transmission.
The method according to any one of claims 1-13, wherein the first indication information includes a second indication field, and the second indication field is used to indicate the third SRS resource in the first SRS resource set. All SRS ports of the SRS resource are not used for SRS transmission, or all SRS ports of the third SRS resource are used for SRS transmission.
The method according to any one of claims 1-14, wherein the first indication information further includes:

Indication information of the at least one third SRS resource.
The method according to any one of claims 1-15, wherein the first indication information further includes indication information of the first SRS resource set.
The method according to any one of claims 1-16, wherein the first information further includes second indication information, and the second indication information is used to indicate the service corresponding to the first indication information A cell and/or a bandwidth part BWP corresponding to the first indication information.
The method according to claim 17, wherein if the serving cell indicated by the second indication information belongs to the first serving cell list, the first indication information corresponds to all service cells in the first serving cell list cells, wherein the first serving cell list is used to indicate at least one serving cell.
The method according to any one of claims 1-18, wherein the first indication information corresponds to all carriers in the same frequency band.
The method according to any one of claims 1-19, further comprising:

The terminal device sends second information to the network device, where the second information includes third indication information, and the third indication information is used to indicate at least one of the following: a suggested antenna switching configuration, a suggested reception Number of antennas, the recommended number of transmit antennas.
The method according to claim 20, wherein the second information is carried by at least one of the following:

MAC CE, UCI, physical uplink control channel PUCCH.
The method according to claim 20 or 21, wherein the second information further includes fourth indication information, and the fourth indication information is used to indicate the serving cell/or the serving cell corresponding to the third indication information. The BWP corresponding to the third indication information.
The method according to any one of claims 1-22, further comprising:

The terminal device sends third information to the network device, where the third information includes fifth indication information, and the fifth indication information is used to indicate at least one of the following:

A set of SRS resources not used for transmission suggested by the terminal device;

SRS resources not used for transmission suggested by the terminal device;

SRS ports not used for transmission suggested by the terminal device;

An SRS resource set for transmission suggested by the terminal device;

SRS resources for transmission suggested by the terminal device;

The SRS port suggested by the terminal device for transmission.
The method according to claim 23, wherein the third information is carried by at least one of the following:

MAC CE, UCI, physical uplink control channel PUCCH.
The method according to claim 23 or 24, wherein the third information further includes sixth indication information, and the sixth indication information is used to indicate the serving cell and/or The BWP corresponding to the sixth indication information.
The method according to any one of claims 1-25, further comprising:

The terminal device reports first capability information to the network device, and the first capability information indicates that the terminal device supports SRS according to at least one of the first information, antenna switching dynamic indication and SRS resource dynamic indication transmission.
The method according to claim 26, wherein the first capability information is sent through radio resource control RRC signaling and/or MAC CE.
The method according to claim 26 or 27, wherein the first capability information is further used to indicate the target frequency band and/or the target carrier, the serving cell on the target frequency band and/or the target carrier Serving cells can be configured in the same serving cell list.
The method according to any one of claims 26-28, wherein the configuration granularity of the first capability information includes at least one of the following:

frequency band, frequency band combination, each frequency band in the frequency band combination, each carrier on each frequency band in the frequency band combination, frequency band range, user equipment.
The method according to any one of claims 1-29, further comprising:

The terminal device performs SRS transmission on the at least one SRS resource in the first SRS resource set; and/or

The terminal device performs SRS transmission on at least one first SRS port of the third SRS resource.
A method for wireless communication, comprising:

The network device sends first information to the terminal device, where the first information includes first indication information, and the first indication information is used to indicate at least one of the following:

At least one first SRS resource in the first sounding reference signal SRS resource set is used for SRS transmission; or

at least one second SRS resource in the first set of SRS resources is not used for SRS transmission; or

at least one first SRS port of at least one third SRS resource in the first set of SRS resources is used for SRS transmission; or

At least one second SRS port of at least one third SRS resource in the first SRS resource set is not used for SRS transmission.
The method according to claim 31, wherein the first information is carried by at least one of the following:

Media access control control element MAC CE, downlink control information DCI.
The method according to claim 31 or 32, further comprising:

The network device sends first configuration information to the terminal device, where the first configuration information is used to configure at least one SRS resource set, where the at least one SRS resource set includes the first SRS resource set.
The method according to claim 33, wherein the resource type corresponding to the first SRS resource set in the first configuration information is aperiodic; or,

The resource type corresponding to the first SRS resource set in the first configuration information is one of the following: semi-persistent, periodic; or

The resource type corresponding to the first SRS resource set in the first configuration information is one of the following: aperiodic, semi-persistent, and periodic.
The method according to any one of claims 31-34, wherein the first indication information includes a first indication field, and the first indication field is used to indicate all SRSs in the first SRS resource set None of the resources are used for SRS transmission, or all the SRS resources in the first SRS resource set are used for SRS transmission.
The method according to any one of claims 31-34, wherein the first indication information includes:

Indication information of the at least one first SRS resource, and/or,

Indication information of the at least one second SRS resource.
The method of claim 36, wherein,

The indication information of the at least one first SRS resource includes: the identification ID of the at least one first SRS resource;

The indication information of the at least one second SRS resource includes: an ID of the at least one second SRS resource.
The method according to any one of claims 31-34, wherein the first indication information indicates the at least one first SRS resource and/or the at least one second SRS resource in a bitmap manner.
The method according to claim 38, wherein the first indication information includes a first bitmap, and the first bitmap includes a plurality of bits, and each bit corresponds to an SRS in the first SRS resource set. Resource, the value of each bit is used to indicate whether the corresponding SRS resource is used for SRS transmission.
The method according to any one of claims 31-39, wherein the first indication information includes at least one of the following:

Indication information of the at least one first SRS port in the at least one third SRS resource;

Indication information of the at least one second SRS port in the at least one third SRS resource.
The method of claim 40, wherein,

The indication information of the at least one first SRS port includes: the port number of the at least one first SRS port;

The indication information of the at least one second SRS port includes: a port number of the at least one second SRS port.
The method according to any one of claims 31-39, wherein the first indication information indicates the at least one first SRS port and/or the at least one second SRS port in a bitmap manner.
The method according to claim 42, wherein the first indication information includes a second bitmap, the second bitmap includes a plurality of bits, and each bit corresponds to an SRS port of the third SRS resource , the value of each bit is used to indicate whether the corresponding SRS port of the third SRS resource is used for SRS transmission.
The method according to any one of claims 31-43, wherein the first indication information further includes: indication information of the at least one third SRS resource.
The method according to any one of claims 31-44, wherein the first indication information includes a second indication field, and the second indication field is used to indicate the third SRS resource in the first SRS resource set. All SRS ports of the SRS resource are not used for SRS transmission, or all SRS ports of the third SRS resource are used for SRS transmission.
The method according to any one of claims 31-45, wherein the first indication information further includes indication information of the first SRS resource set.
The method according to any one of claims 31-46, wherein the first information further includes second indication information, and the second indication information is used to indicate the service corresponding to the first indication information A cell and/or a bandwidth part BWP corresponding to the first indication information.
The method according to claim 47, wherein if the serving cell indicated by the second indication information belongs to the first serving cell list, the first indication information corresponds to all service cells in the first serving cell list. cells, wherein the first serving cell list is used to indicate at least one serving cell.
The method according to any one of claims 31-48, wherein the first indication information corresponds to all carriers in the same frequency band.
The method according to any one of claims 31-49, further comprising:

The network device receives the second information sent by the terminal device, where the second information includes third indication information, and the third indication information is used to indicate at least one of the following: a suggested antenna switching configuration, a suggested Number of receive antennas, recommended number of transmit antennas.
The method according to claim 50, wherein the second information is carried by at least one of the following:

MAC CE, UCI, physical uplink control channel PUCCH.
The method according to claim 50 or 51, wherein the second information further includes fourth indication information, and the fourth indication information is used to indicate the serving cell/or the serving cell corresponding to the third indication information. The BWP corresponding to the third indication information.
The method according to any one of claims 51-52, further comprising:

The network device receives third information sent by the terminal device, where the third information includes fifth indication information, and the fifth indication information is used to indicate at least one of the following:

A set of SRS resources not used for transmission suggested by the terminal device;

SRS resources not used for transmission suggested by the terminal device;

SRS ports not used for transmission suggested by the terminal device;

An SRS resource set for transmission suggested by the terminal device;

SRS resources for transmission suggested by the terminal device;

The SRS port suggested by the terminal device for transmission.
The method according to claim 53, wherein the third information is carried by at least one of the following:

MAC CE, UCI, physical uplink control channel PUCCH.
The method according to claim 53 or 54, wherein the third information further includes sixth indication information, and the sixth indication information is used to indicate the serving cell and/or The BWP corresponding to the sixth indication information.
The method according to any one of claims 31-55, further comprising:

The network device receives first capability information reported by the terminal device, where the first capability information indicates that the terminal device supports at least one of the first information, antenna switching dynamic indication, and SRS resource dynamic indication. SRS transmission.
The method according to claim 26, wherein the first capability information is sent through radio resource control RRC signaling and/or MAC CE.
The method according to claim 26 or 27, wherein the first capability information is further used to indicate the target frequency band and/or the target carrier, the serving cell on the target frequency band and/or the target carrier Serving cells can be configured in the same serving cell list.
The method according to any one of claims 26-28, wherein the configuration granularity of the first capability information includes at least one of the following:

frequency band, frequency band combination, each frequency band in the frequency band combination, each carrier on each frequency band in the frequency band combination, frequency band range, user equipment.
The method according to any one of claims 31-59, further comprising:

the network device receives an SRS on the at least one SRS resource in the first set of SRS resources; and/or

The network device receives an SRS on at least one first SRS port of the third SRS resource.
A terminal device, characterized in that it includes:

A communication unit, configured to receive first information sent by a network device, where the first information includes first indication information, and the first indication information is used to indicate at least one of the following:

At least one first SRS resource in the first sounding reference signal SRS resource set is used for SRS transmission; or

at least one second SRS resource in the first set of SRS resources is not used for SRS transmission; or

at least one first SRS port of at least one third SRS resource in the first set of SRS resources is used for SRS transmission; or

At least one second SRS port of at least one third SRS resource in the first SRS resource set is not used for SRS transmission.
A network device, characterized in that it includes:

A communication unit, configured to send first information to the terminal device, where the first information includes first indication information, and the first indication information is used to indicate at least one of the following:

At least one first SRS resource in the first sounding reference signal SRS resource set is used for SRS transmission; or

at least one second SRS resource in the first set of SRS resources is not used for SRS transmission; or

at least one first SRS port of at least one third SRS resource in the first set of SRS resources is used for SRS transmission; or

At least one second SRS port of at least one third SRS resource in the first SRS resource set is not used for SRS transmission.
A terminal device, characterized in that it includes: a processor and a memory, the memory is used to store computer programs, the processor is used to call and run the computer programs stored in the memory, and execute any one of claims 1 to 30 one of the methods described.
A chip, characterized by comprising: a processor, configured to invoke and run a computer program from a memory, so that a device installed with the chip executes the method according to any one of claims 1 to 30.
A computer-readable storage medium, characterized by being used to store a computer program, the computer program causing a computer to execute the method according to any one of claims 1 to 30.
A computer program product, characterized by comprising computer program instructions, the computer program instructions causing a computer to execute the method according to any one of claims 1 to 30.
A computer program, characterized in that the computer program causes a computer to execute the method according to any one of claims 1-30.
A network device, characterized by comprising: a processor and a memory, the memory is used to store a computer program, the processor is used to invoke and run the computer program stored in the memory, and execute any of the following claims 31 to 60 one of the methods described.
A chip, characterized by comprising: a processor, configured to invoke and run a computer program from a memory, so that a device equipped with the chip executes the method according to any one of claims 31 to 60.
A computer-readable storage medium, characterized by being used to store a computer program, the computer program causes a computer to execute the method according to any one of claims 31 to 60.
A computer program product, characterized by comprising computer program instructions, the computer program instructions cause a computer to execute the method according to any one of claims 31 to 60.
A computer program, characterized in that the computer program causes a computer to execute the method according to any one of claims 31 to 60.