CN117242862A

CN117242862A - Wireless communication method, terminal equipment and network equipment

Info

Publication number: CN117242862A
Application number: CN202180097900.0A
Authority: CN
Inventors: 史志华; 陈文洪; 黄莹沛
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2023-12-15
Also published as: WO2023050337A1

Abstract

A method of wireless communication, a terminal device and a network device, the method comprising: the terminal equipment receives first information sent by the network equipment, 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 SRS resource in the first sounding reference signal, SRS, resource set is used for SRS transmission; or at least one second SRS resource of the first SRS resource set is not used for SRS transmission; or at least one first SRS port of at least one third SRS resource in the first SRS resource set 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.

Description

Wireless communication method, terminal equipment and network equipment

Technical Field

The embodiment of the application relates to the field of communication, in particular to a wireless communication method, terminal equipment and network equipment.

Background

In a New Radio (NR) system, a network device may acquire downlink channel information by measuring a sounding reference signal (sounding reference signal, SRS) using channel reciprocity. The number of transmitting antennas of the terminal device may be less than the number of receiving antennas due to the limitation of cost and hardware, so that the terminal device with the number of transmitting antennas less than the number of receiving antennas can also obtain the downlink channel information through channel reciprocity, and the NR system supports the downlink channel information to be obtained by adopting the SRS antenna switching transmission mode.

After the network device indicates the SRS resource set parameter for antenna switching through radio resource control (Radio Resource Control, 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.), the antenna switching mechanism needs to be changed, in this case, the network device needs to reconfigure the SRS resource set parameter through RRC signaling, which results in a larger delay of the antenna switching mechanism change and a larger signaling overhead.

Disclosure of Invention

The application provides a wireless communication method, terminal equipment and network equipment, which are beneficial to reducing the time delay of antenna switching mechanism change and reducing signaling overhead.

In a first aspect, a method of wireless communication is provided, comprising: the terminal equipment receives first information sent by the network equipment, 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 SRS resource in the first sounding reference signal, SRS, resource set is used for SRS transmission; or (b)

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

At least one first SRS port of at least one third SRS resource in the first SRS resource set is used for SRS transmission; or (b)

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

In a second aspect, there is provided a method of wireless communication, comprising: the network device sends first information to the terminal 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 SRS resource in the first sounding reference signal SRS resource set is used for SRS transmission; or (b)

In a third aspect, a terminal device is provided for performing the method in the first aspect or each implementation manner thereof.

Specifically, the terminal device comprises functional modules for performing the method of the first aspect or its implementation manner.

In a fourth aspect, a network device is provided for performing the method of the second aspect or implementations thereof.

In particular, the network device comprises functional modules for performing the method of the second aspect or implementations thereof described above.

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

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

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

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

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

A ninth aspect provides a computer program product comprising computer program instructions for causing a computer to perform the method of any one of the first to second aspects or implementations thereof.

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

According to the technical scheme, the network equipment can dynamically indicate the changed SRS resource set parameters through the transmission state of the SRS resource set parameters indicated by the first information, and the SRS resource set parameters do not need to be reconfigured through RRC signaling, so that the time delay of antenna switching mechanism change is reduced, the rapid adjustment of the SRS resource set parameters is realized, and meanwhile, the signaling overhead is reduced.

Drawings

Fig. 1 is a schematic diagram of a communication system architecture according to 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 method of wireless communication provided in accordance with an embodiment of the present application.

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

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

Fig. 6 is a MAC CE format diagram indicating SRS resources for transmission or not for transmission among a plurality of SRS resource sets according to an embodiment of the present application.

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

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

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

Fig. 10 is a MAC CE format diagram indicating SRS resources for transmission and SRS resources not for transmission among a plurality of SRS resource sets according to an embodiment of the present application.

Fig. 11 is a MAC CE format diagram indicating SRS resources for transmission and SRS resources not for transmission among a plurality of SRS resource sets according to another embodiment of the present application.

Fig. 12 is a MAC CE format diagram of an SRS port for transmission indicating SRS resources 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 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 of an SRS port for transmission indicating SRS resources in an SRS resource set and an SRS port not for transmission according to another embodiment of the present application.

Fig. 15 is a MAC CE format diagram indicating that SRS ports of SRS resources in an SRS resource set are used for transmission or are not used for transmission, according to an embodiment of the present application.

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

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

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

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

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

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

Fig. 22 is a schematic block diagram of a communication device provided in accordance with 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 in accordance with an embodiment of the present application.

Detailed Description

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

The technical scheme of the embodiment of the application can be applied to various communication systems, such as: global system for mobile communications (Global System of Mobile communication, GSM), code division multiple access (Code Division Multiple Access, CDMA) system, wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) system, general packet Radio service (General Packet Radio Service, GPRS), long term evolution (Long Term Evolution, LTE) system, advanced long term evolution (Advanced long term evolution, LTE-a) system, new Radio (NR) system, evolved system of NR system, LTE-based access to unlicensed spectrum, LTE-U) system on unlicensed spectrum, NR (NR-based access to unlicensed spectrum, NR-U) system on unlicensed spectrum, non-terrestrial communication network (Non-Terrestrial Networks, NTN) system, universal mobile communication system (Universal Mobile Telecommunication System, UMTS), wireless local area network (Wireless Local Area Networks, WLAN), wireless fidelity (Wireless Fidelity, wiFi), fifth Generation communication (5 th-Generation, 5G) system, or other communication system, etc.

Generally, the number of connections supported by the conventional communication system is limited and easy to implement, however, as the communication technology advances, the mobile communication system will support not only conventional communication but also, for example, device-to-Device (D2D) communication, machine-to-machine (Machine to Machine, M2M) communication, machine type communication (Machine Type Communication, MTC), inter-vehicle (Vehicle to Vehicle, V2V) communication, or internet of vehicles (Vehicle to everything, V2X) communication, etc., to which the embodiments of the present application can also be applied.

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

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

Embodiments of the present application are described in connection with a network device and a terminal device, where the terminal device may also be referred to as a User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a User terminal, a wireless communication device, a User agent, a User Equipment, or the like.

The terminal device may be a STATION (ST) in a WLAN, may be a cellular telephone, a cordless telephone, a session initiation protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) STATION, a personal digital assistant (Personal Digital Assistant, PDA) device, a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, a vehicle mounted device, a wearable device, a terminal device in a next generation communication system such as an NR network, or a terminal device in a future evolved public land mobile network (Public Land Mobile Network, PLMN) network, etc.

In the embodiment of the application, the terminal equipment can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; can also be deployed on the water surface (such as ships, etc.); but may also be deployed in the air (e.g., on aircraft, balloon, satellite, etc.).

In the embodiment of the present application, the terminal device may be a Mobile Phone (Mobile Phone), a tablet computer (Pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal device, an augmented Reality (Augmented Reality, AR) terminal device, a wireless terminal device in industrial control (industrial control), a wireless terminal device in unmanned driving (self driving), a wireless terminal device in remote medical (remote medical), a wireless terminal device in smart grid (smart grid), a wireless terminal device in transportation security (transportation safety), a wireless terminal device in smart city (smart city), or a wireless terminal device in smart home (smart home), and the like.

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

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

By way of example, and not limitation, in embodiments of the present application, a network device may have a mobile nature, e.g., the network device may be a mobile device. Alternatively, the network device may be a satellite, a balloon station. For example, the satellite may be a Low Earth Orbit (LEO) satellite, a medium earth orbit (medium earth orbit, MEO) satellite, a geosynchronous orbit (geostationary earth orbit, GEO) satellite, a high elliptical orbit (High Elliptical Orbit, HEO) satellite, or the like. Alternatively, the network device may be a base station disposed on land, in a water area, or the like.

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

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

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

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

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

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

It should be understood that the "indication" mentioned in the embodiments of the present application may be a direct indication, an indirect indication, or an indication having an association relationship. For example, a indicates B, which may mean that a indicates B directly, e.g., B may be obtained by a; it may also indicate that a indicates B indirectly, e.g. a indicates C, B may be obtained by C; it may also be indicated that there is an association between a and B.

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

In the embodiment of the present application, the "predefining" may be implemented by pre-storing corresponding codes, tables or other manners that may be used to indicate relevant information in devices (including, for example, terminal devices and network devices), and the present application is not limited to the specific implementation manner thereof. Such as predefined may refer to what is 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, may include an LTE protocol, an NR protocol, and related protocols applied in a future communication system, which is not limited in the present application.

In order to facilitate understanding of the technical scheme of the embodiment of the present application, the related technology of the present application is described.

The sounding reference signal (Sounding Reference Signal, SRS) is an important reference signal in NR systems and is widely used in various functions in NR systems, for example:

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

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

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

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

5. for a positioning function;

6. cooperate with codebook-based uplink (codebook-based UL transmission);

7. non-codebook based uplink transmission (Non-Codebook based UL transmission) is coordinated.

The network device may configure the terminal device with one or more SRS Resource sets (SRS Resource sets), each of which may configure 1 or more SRS resources (SRS Resource).

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

1. Periodic SRS and semi-persistent SRS:

the periodic SRS refers to a periodically transmitted SRS, the period and slot offset of the SRS may be configured by radio resource control (Radio Resource Control, RRC) signaling, and after receiving the corresponding RRC configuration, the terminal device sends the SRS according to the RRC configuration until the RRC configuration fails.

The spatially related information of the periodic SRS (Spatial Relation Info, indicating the transmit beam by implicit means) may also be configured by RRC signaling. The spatial correlation information may indicate a reference channel state information reference signal (Channel State Information Reference Signal, CSI-RS), a reference synchronization signal block (Synchronization Signal Block, SSB) or a reference SRS, and the terminal device determines a transmission beam of the SRS resource according to the indicated reception beam of the reference CSI-RS/reference SSB or determines a transmission beam of the SRS resource according to the transmission beam of the reference SRS resource. Or the terminal equipment adopts the same spatial transmission filter (spatial domain transmission filter) as the reference CSI-RS/reference SSB for receiving the indication to transmit the corresponding SRS resource, or adopts the same spatial transmission filter as the reference SRS resource to transmit the corresponding SRS resource.

Semi-persistent SRS is also a periodically transmitted SRS, the period and slot offset (slot offset) being configured by RRC signaling, but its activation and deactivation signaling may be carried by a medium access control element (Media Access Control Control Element, MAC CE). The terminal device starts periodically transmitting SRS after receiving the activation signaling until receiving the deactivation signaling. The spatially related information (transmit beam) of the semi-persistent SRS is carried by the MAC CE that activates the SRS.

After receiving the period and the slot offset of the RRC configuration, the terminal device determines the slots that can be used for transmitting SRS according to the following formula:

wherein T is _SRS And T _offset For the configured period and offset, n _f Andthe radio frames and time slots are numbered respectively.

2. Aperiodic SRS transmission:

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

After receiving the aperiodic SRS trigger signaling (e.g., DCI), the terminal device performs SRS transmission on the SRS resource set indicated by the trigger signaling. Wherein a slot offset (slot offset) between the trigger signaling and SRS transmission is configured by higher layer signaling (e.g., RRC signaling). The network device indicates the configuration parameters of each SRS resource set (namely SRS resource set parameters) of the terminal device through high-layer signaling in advance, wherein the configuration parameters comprise time-frequency resources, sequence parameters, power control parameters and the like. In addition, for each SRS resource in the triggered SRS resource set, the terminal device may also determine a transmit beam or a spatial transmission filter used for transmitting the SRS on the SRS resource through spatial related information of the SRS resource, where the spatial related information is configured to each SRS resource through RRC.

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

spatial diversity gain;

beamforming gain (precoding gain);

spatial multiplexing gain.

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

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

For the channel information of the transmission channel corresponding to the terminal a, there are two main methods:

1. the feedback method comprises the following steps: the base station B transmits reference information X (e.g., CSI-RS signal), and the terminal a obtains information of a corresponding downlink channel by measurement according to the reference signal X, and then determines corresponding channel feedback information. And the base station B determines a corresponding precoding matrix to transmit the PDSCH to the terminal A according to the channel feedback information of the terminal A, or a physical downlink control channel (Physical Downlink Control Channel, PDCCH), or other downlink channels or downlink reference signals.

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

rank Indication (RI) (corresponding to the number of transport streams proposed by the terminal);

channel quality indication (Channel Quantity Indicator, CQI) (modulation coding scheme (Modulation and Coding Scheme, MCS) related information);

precoding matrix indicator (Precoding Matrix Indicator, PMI) (corresponding codebook information).

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

In the NR system, the use (usage) of the SRS resource set parameter (i.e., SRS-resource set) corresponding to the SRS signal is set to "antistenna switching", where one SRS-resource set includes 1 or more SRS resources.

The sounding (sounding) procedure of the SRS signal is also called as a UE sounding procedure (UE sounding procedure for DL CSI acquisition) for downlink CSI acquisition, or SRS transmission port switching (SRS Tx port switching), and antenna switching (antenna switching).

For a typical terminal device, the number of receive antennas would tend to be greater than the number of transmit antennas, e.g., as shown in fig. 2, terminal a has two receive antennas, but only 1 transmit antenna (a single time). Therefore, if terminal a transmits SRS once (when a single antenna is used, the corresponding SRS resource is 1 SRS port), base station B can only acquire the channel of 8*1, i.e. cannot acquire half of the channel information corresponding to the channel, which may affect obtaining the better precoding performance.

The number of transmitting antennas, the number of receiving antennas, and whether "antenna switching" is supported (or, whether SRS Tx port switching is supported) of the terminal a may be implemented differently, and reported by UE capability (UE capability).

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

t1r2, t1r4, t2r4, t1r4-t2r4, t1r1, t2r2, t4r4, unsupported (notSupported);

where 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, T4R4 is used for 4t=4r.

The corresponding descriptions of the UE capabilities are as follows:

for 1T2R: 0 or 1 or 2 SRS resource sets may be configured. The resource types (resource types) corresponding to the two SRS resource sets are configured with different values, for example, the value may be an apidic, semiPersistent, or periodic. In the subsequent configuration of the two SRS resource sets, the resource types corresponding to the SRS resource sets are similar, and will not be described herein.

Each SRS resource set includes 2 single-port (i.e., 1-port, or SRS port) SRS resources, which are transmitted on different symbols (symbols), and two SRS resources in the same SRS resource set correspond to different UE antenna ports (UE antenna ports), corresponding to the example in fig. 2.

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

For 1T4R: 0 or 1 SRS resource set may be configured (may be 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: either 0 or 2 SRS resource sets (all configured to be aperiodic) may be configured. The 2 SRS resources set includes a total of 4 single-port (1-port) SRS resources transmitted on different symbols of two different slots (slots). The 4 SRS resources correspond to different UE antenna ports. The 4 SRS resources may be that each SRS resource set includes 2 SRS resources, or that 1 SRS resource set includes 3 SRS resources and another SRS resource set includes 1 SRS resource.

For 1t=1r, 2t=2r, or 4t=4r: 0 or 1 or 2 SRS resource sets may be configured, each SRS resource set includes 1 SRS resource, and the number of SRS ports corresponding to the SRS resource is 1,2 or 4 respectively.

If the UE reports support't 1r4-t2r4', the SRS resources in all SRS resources set need to be configured with the same SRS port (e.g., 1 or 2 SRS ports).

In the following description, for convenience of distinction and explanation, for the antenna switching configuration, xTyR (when x=y, it is denoted as xt=yr), or "txry", which are corresponding, or equivalent, where x and y represent positive integers greater than 0, are used.

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

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

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

It should be appreciated that a UE antenna switching capability of "xTyR" corresponds to: one UE is capable of SRS transmission on the "x" antenna port, while "y" corresponds to all or a subset of the UE receive antennas, where the terminal supports 2T4R, indicating that the terminal has two transmit antennas.

In the embodiment of the present application, if the number of SRS ports included in one SRS resource is a, the SRS resource may be expressed as:

the method comprises the steps of SRS resources of A ports, SRS resources of A SRS ports, SRS resources of A ports, and SRS resources of A ports.

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

In the related art, after the network device indicates the SRS resource set parameter (i.e., SRS-resource) through RRC signaling, the terminal device performs SRS transmission according to the SRS resource set parameter. In some cases, due to factors (e.g., saving SRS resource overhead, reducing terminal power consumption, etc.) it is desirable to change the antenna switching mechanism, e.g., from 2T4R antenna switching to 1T2R or 2T2R antenna switching. In this case, the network device needs to reconfigure the SRS resource set parameter through RRC signaling, which results in relatively large delay of antenna switching mechanism change, which is not beneficial to rapid adjustment of the SRS resource set parameter, and signaling overhead is also relatively large.

In order to facilitate understanding of the technical solution of the embodiments of the present application, the technical solution of the present application is described in detail below through specific embodiments. The above related technologies may be optionally combined with the technical solutions of the embodiments of the present application, which all belong to the protection scope of the embodiments of the present application. Embodiments of the present application include at least some of the following.

Fig. 3 is a schematic flow chart of a method 200 of wireless communication according to an embodiment of the application, the method 200 being executable by a terminal device in the communication system shown in fig. 1, as shown in fig. 3, the method 200 comprising:

s210, the terminal device receives first information sent by the network device, where the first information includes first indication information, where the first indication information is used to indicate at least one of the following:

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.

It is to be appreciated that the first indication information may indicate one or more of the above, e.g., the first indication information indicates that at least one first SRS resource of the first set of SRS resources is used for SRS transmission and at least one second SRS resource of the first set of SRS resources is not used for SRS transmission; for another example, the first indication information indicates that at least one first SRS resource of the first sounding reference signal, SRS, resource set is used for SRS transmission and at least one first SRS port of at least one third SRS resource of the first SRS resource set 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 are not exemplified here. Other similar descriptions will not be repeated for specific combinations.

It should be understood that in the embodiment of the present application, the use of SRS transmission may be expressed as use of SRS transmission, and use of SRS transmission may be expressed as use of SRS transmission.

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

at least one first SRS resource in the first sounding reference signal SRS resource set is used for transmission; or (b)

At least one second SRS resource in the first SRS resource set is not used for transmission; or (b)

At least one first SRS port of at least one third SRS resource in the first SRS resource set is for transmission; or (b)

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 the embodiment of the present application, whether the SRS resource is used for SRS transmission may be understood as a transmission state of the SRS resource, that is, the SRS resource is indicated as being used for transmission or not used for transmission, or is indicated as being capable of being used for transmission or not used for transmission. Similarly, whether an SRS port is used for SRS transmission may be understood as a transmission status of the SRS port, i.e., 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 being capable of being used for transmission or not used for transmission. Whether or not the SRS resource set is used for SRS transmission may be understood as a transmission state of the SRS resource set, i.e. the SRS resource set is indicated as being used for transmission or not used for transmission, or the SRS resource set is indicated as being capable of being used for transmission or not used for transmission. .

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

For example, the first indication information may also be used to indicate a transmission state of the second SRS resource set, and/or a transmission state of the SRS resources in the second SRS resource set, and/or a transmission state of the SRS ports included in the SRS resources in the second SRS resource level, or may also indicate a transmission state of a plurality of SRS resource sets, and the description below uses the first SRS resource set as an example, but the present application is not limited thereto.

In some embodiments, the method 200 further comprises:

the network device sends first configuration information to the terminal device, wherein the first configuration information is used for configuring at least one SRS resource set, and the at least one SRS resource set comprises a first SRS resource set.

In some embodiments, the first configuration information includes SRS resource set parameters (i.e., SRS-resource set) corresponding to each of at least one SRS resource set.

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

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

In some embodiments, the terminal device may use the first configuration information for SRS transmission before the first configuration information is invalid. In some scenarios, a different antenna switching mechanism needs to be adopted from some factors (such as saving SRS resource overhead, reducing terminal power consumption, etc.), for example, the antenna switching mechanism is changed from a 2T4R antenna switching mechanism to a 1T2R or a 2T2R antenna switching mechanism, in which case, the SRS resource set parameter needs to be changed. In the related art, changing the SRS resource set parameter is implemented by the network device needing to reconfigure the SRS resource set parameter through RRC signaling, so that the delay of antenna switching mechanism change is larger, which is not beneficial to quick adjustment of the SRS resource set parameter, and signaling overhead is also larger.

In the embodiment of the application, changing the SRS resource set parameter can be realized by changing the transmission state of the SRS resource set parameter.

For example, the network device may indicate SRS resource set parameters for which the transmission state is changed. For example, a set of SRS resources with changed transmission state, and/or SRS ports with changed transmission state.

For another example, the network device may indicate a changed transmission state of the SRS resource set parameter, e.g., indicate a changed transmission state corresponding to the SRS resource set, and/or a changed transmission state corresponding to the SRS resource, and/or a changed transmission state corresponding to the SRS port.

It should be appreciated that altering the transmission state of the SRS resource set parameter includes at least one of:

changing a transmission state of the SRS resource set, for example, indicating that the SRS resource set is used for transmission or indicating that the SRS resource set is not used for transmission;

changing a transmission state of SRS resources in the SRS resource set, e.g., 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;

the transmission state of the SRS ports of the SRS resources in the SRS resource set is changed, e.g. indicating that at least one first SRS port of the SRS resources 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, through the first information, the transmission state of the SRS resource set parameter, which is dynamically indicated to be changed, for example, the SRS resource set parameter that needs to be changed due to the change of the antenna switching mechanism, without reconfiguring the SRS resource set parameter through RRC signaling, so that the dynamic indication of the SRS resource can be implemented, which is beneficial to reducing the delay of the change of the antenna switching mechanism, realizing the rapid adjustment of the SRS resource set parameter, and reducing the signaling overhead.

In other words, the technical solution according to the embodiment of the present application can implement dynamic antenna switching, or dynamic indication of SRS resources, that is, the embodiment of the present application provides an antenna switching dynamic indication scheme, or an SRS resource dynamic indication scheme, or an antenna dynamic switching scheme, so that the first information may also be replaced by antenna switching dynamic indication, SRS resource dynamic indication, or other equivalent expression, which is not limited in this aspect of the present application.

It should be understood that the embodiment of the present application may be applied to a scenario in which the SRS resource set parameter needs to be changed due to the change of the antenna switching mechanism, or may be applied to a scenario in which the SRS resource set parameter needs to be changed due to other reasons, and in the following, an antenna switching scenario is taken as an example, but the present application is not limited thereto.

In the embodiment of the present application, the antenna switching mechanism, or antenna switching configuration, antenna switching capability, SRS Tx port switching capability, etc. are equivalent and may be replaced with each other.

By way of example and not limitation, the antenna switching configuration may include at least one of:

t1r2、t1r4、t2r4、t1r4-t2r4、t1r1、t2r2、t4r4、t1r6、t2r6、t4r6、t1r8、t2r8、t4r8。

in some embodiments, the SRS resource set parameter corresponding to the first SRS resource set includes a resource type parameter (resourceType).

In some implementations, the resourceType in the SRS resource set parameters corresponding to the first SRS resource set is configured to be aperiodic (adaptive). The SRS resource dynamic indication mode of the embodiment of the application is only adopted for the aperiodic SRS resource by configuration, thereby being beneficial to reducing the implementation complexity of the terminal equipment.

In other implementations, the resourceType in the SRS resource set parameters corresponding to the first SRS resource set is configured as one of semi-persistent (semi persistent) and periodic (periodic). The SRS resource dynamic indication mode of the embodiment of the application is adopted by configuring the SRS resources which are only semi-persistent and periodic, thereby being beneficial to reducing the implementation complexity of the terminal equipment.

In still other implementations, the resource type in the SRS resource set parameter corresponding to the first SRS resource set is configured as one of aperiodic (aperiodic), semi-persistent (semi persistent), and periodic (periodic). By configuring aperiodic, semi-persistent and periodic SRS resources, the SRS resource dynamic indication mode of the embodiment of the application can be adopted, which is beneficial to improving the flexibility of the system.

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 by the present application.

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

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

The first information is transmitted through the MAC CE signaling or the DCI signaling, so that dynamic indication of SRS resources can be realized, and the time delay of SRS transmission is reduced.

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 carry the first information through a new field in the MAC CE signaling or the DCI signaling, which is not limited in this aspect of the present application.

Optionally, in some embodiments of the present application, the first indication information may be used to indicate a modified SRS resource set parameter corresponding to the first SRS resource set, for example, indicate the modified SRS resource set parameter by indicating a transmission state of the SRS resource set parameter, or the first indication information is used to indicate a modified transmission state corresponding to the SRS resource set parameter.

Optionally, in some embodiments of the present application, the first indication information may be used to indicate an SRS resource set parameter corresponding to the first SRS resource set that is changed, that is, may not indicate an SRS resource set parameter whose transmission state is unchanged, but only indicate an SRS resource set parameter whose transmission state is changed. For example, the first indication information may indicate a set of SRS resources with changed transmission state, and/or SRS ports with changed transmission state.

Alternatively, the non-indicated SRS resource set parameter may consider that the transmission state has not changed.

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

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

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

As an example, in the first antenna switching configuration, where the network device includes 4 SRS resources in one SRS resource set configured through RRC signaling, and in the second antenna switching configuration, the network device needs to indicate that 2 SRS resources in the one SRS resource set are used for transmission, the first information may be used to indicate that two SRS resources in the one SRS resource set are disabled, i.e. 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 2 SRS ports, and in the second antenna switching configuration, the network device needs to indicate that 1 SRS port of the one SRS resource is used for transmission, and the first information may be used to indicate that one of two SRS ports of the one SRS resource is disabled, that is, 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 resources, and/or SRS ports through the first information.

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

It should be appreciated that, in the embodiment of the present application, the first indication information may be used to perform SRS resource set granularity, and/or SRS resource granularity, and/or dynamic indication of SRS port granularity.

For example, the first indication information is used to indicate that all SRS resources in one SRS resource set are not used for SRS transmission or are used for SRS transmission. An indication of 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 of one SRS resource set is used for SRS transmission and/or at least one second SRS resource is not used for SRS transmission. An indication of the granularity of corresponding SRS resources.

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. An indication of the granularity of the corresponding SRS port.

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 SRS resources in one SRS resource set for SRS transmission and/or SRS resources in one SRS resource set not for SRS transmission.

In other words, the network device may make a dynamic indication of SRS resource granularity.

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

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

The network device may implement a change of the terminal device from one antenna switching mechanism to another antenna switching mechanism by indicating that a portion of the SRS resources in one SRS resource set are not used for transmission or that a portion 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 (ID) of the at least one SRS resource, an index, or a number, a sequence number, or the like of the at least one SRS resource in the first SRS resource set, which is not limited to this.

Similarly, the indication information of the at least one second SRS resource may be an ID, an index, or a number, a sequence number, or the like of the at least two SRS resources in the first SRS resource set, which is not limited to this.

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

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

In other embodiments, the network device indicates the at least one first SRS resource and/or the at least one second SRS resource by way of a bitmap (bitmap).

Optionally, when the number of the at least one first SRS resource and/or the at least one second SRS resource is greater or the ID is longer, indicating whether the SRS resource in one SRS resource set is used for SRS transmission in a bitmap manner is beneficial to reducing signaling overhead.

In some implementations, the first indication information includes a first bitmap including a plurality of bits, each bit corresponding to one SRS resource in the first set of SRS resources, a value of each bit indicating 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, the first SRS resource set includes 8 SRS resources (SRS resources 7 to SRS resource 0), and the first bitmap may include 8 bits (B7 to B0) each corresponding to one SRS resource, and if the first bitmap is 00001111, 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 resources 0 to 3 are used for SRS transmission, and SRS resources 4 to 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 set of SRS resources are not used for SRS transmission or that all SRS resources in the first set of SRS resources are used for SRS transmission.

In some implementations, the first indication information includes a first indication field that indicates that none, or all, of the SRS resources in the first set of SRS resources are used for SRS transmission.

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

In other words, the network device may make a dynamic indication of SRS resource set granularity.

By indicating that all SRS resources in one SRS resource set are used for SRS transmission or not used for SRS transmission through an independent indication domain, it is unnecessary to separately indicate each SRS resource in the SRS resource set, which is beneficial to reducing signaling overhead.

Optionally, the network device may 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 used for SRS transmission through reserved bits in MAC CE signaling or DCI signaling.

Alternatively, the network device may also 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 used for SRS transmission, by an invalid value of an existing information field in MAC CE signaling or DCI signaling.

Alternatively, the first indication field may be 1 bit.

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

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

Alternatively, the first value is 1, the second value is 0, or the first value is 0, the second value is 1.

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

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 one SRS resource that is not used for SRS transmission and/or an SRS port of one SRS resource that is used for SRS transmission.

In other words, the network device may make a dynamic indication of SRS port granularity.

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 may close part of the transmitting antennas in some scenarios, reduce power consumption of the terminal device, or may implement transition from one antenna switching mechanism to another antenna switching mechanism.

Optionally, when the network device only indicates an 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 indicates only SRS ports of the SRS resource for SRS transmission, then 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 a port number, a port index of the at least one first SRS port, or a number, a sequence number, or the like of the at least one first SRS port in all SRS ports included in the third SRS resource, which is not limited to this embodiment.

Similarly, the indication information of the at least one second SRS port may be a port number, a port index of the at least one second SRS port, or a number, a sequence number, or the like of all SRS ports included in the third SRS resource, which is not limited to this embodiment.

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

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

In other embodiments, the network device indicates the at least one first SRS port and/or the at least one second SRS port by way of a bitmap.

Optionally, when the number of the at least one first SRS port and/or the at least one second SRS port is greater or the port number is longer, the signaling overhead is reduced by indicating in a bitmap manner.

In some implementations, the first indication information includes a second bitmap including a plurality of bits, each bit corresponding to one SRS port of the third SRS resource, the value of each bit being used to indicate whether the corresponding SRS port of the third SRS resource 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 ports 4 to 0), the second bitmap may include 4 bits (B3 to B0) corresponding to one SRS port, if the second bitmap is 0011, a bit value of 1 indicates that the corresponding SRS port is used for SRS transmission, a value of 0 indicates that the corresponding SRS port is not used for SRS transmission, and the second bitmap indicates that SRS ports 0 to 1 are used for SRS transmission, and SRS ports 2 to 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 that all SRS ports of the one SRS resource are used for SRS transmission.

In some implementations, the first indication information includes a second indication field that indicates that none, or all, of the SRS ports of a third SRS resource in the first set of SRS resources are used for SRS transmission.

All the SRS ports of one SRS resource are indicated by the independent indication domain to be used for SRS transmission or not used for SRS transmission, so that each SRS port does not need to be indicated independently, and signaling overhead is reduced.

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

Optionally, the network device may also use an invalid value of an existing information field in the MAC CE signaling or the DCI signaling, or the reserved value indicates 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.

Alternatively, the second indication field may be 1 bit.

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

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

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

Alternatively, the third value is 1, the fourth value is 0, or the third value is 0, 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 port and the indication information may be specific to the specific SRS resource, and in other embodiments, in a case where the SRS resource corresponding to the port indication information is not configured, the port indication information is default to all SRS resources in the first SRS resource set, or to all SRS resources in all SRS resource sets.

Alternatively, the indication information of the third SRS resource may be an Identity (ID) of the third SRS resource, an index, or a number, a sequence number, or the like of the third SRS resource in the first SRS resource set, which is not limited to this.

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

Alternatively, the indication information of the first SRS resource set may be an ID, an index, or a number, a sequence number, or the like of the first SRS resource in the plurality of SRS resource sets, which is not limited to this.

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

In some embodiments, the first information may further include second indication information, where the second indication information is used to indicate an application object of the first indication information, for example, the second indication information is used to indicate a serving cell corresponding to the first indication information and/or a bandwidth portion 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. Or, the first indication information is applied to other serving cells except for the serving cell ID or the serving cell corresponding to serving cell index.

Alternatively, the second indication information may include one or more BandWidth Part (BWP) IDs or BWP index. The first indication information may be applied to an uplink BWP corresponding to the BWP ID or BWP index. Alternatively, the first indication information is applied to other uplink BWP except the corresponding uplink BWP of 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 the serving cells in the first serving cell list, that is, the first indication information may be applied to all the 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 may be replaced by a member carrier (Component Carrier, CC), and then the second indication information may be used to indicate a carrier corresponding to the first indication information, and the first serving cell list may be replaced by the first carrier list. Therefore, in the following description, the component carrier and the serving cell are often used equally, or the carrier and the cell are used equally, which may be replaced with each other.

In this way, the network device sends the first information once, and the SRS resource dynamic indication on the multiple carriers can be performed, so that it is unnecessary to perform separate SRS resource dynamic indication on each carrier, which is beneficial to reducing the power consumption of the terminal and reducing the signaling overhead.

Alternatively, the first serving cell list may include one or more serving cell IDs (or serving cell index), or may include one or more component carrier indications or identifications.

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

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

Optionally, on the serving cell in the first serving cell list, the terminal device may use the same antenna switching configuration, so on the serving cell in the first serving cell list, the terminal device performs SRS transmission based on the same antenna switching dynamic indication, which can reduce the terminal power consumption to the maximum extent.

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

In this way, the network device sends the first information once, and can dynamically indicate the SRS resources on a plurality of carriers (or cells) on one band, so that separate SRS resource dynamic indication is not needed for each carrier (or cell) on one band, which is beneficial to reducing the power consumption of the terminal and reducing the signaling overhead.

Optionally, the second indication information further includes frequency band information. The first indication information is applied to all carriers in a 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, where the third indication information is used to indicate at least one of the following: a recommended antenna switching configuration, a recommended number of receive antennas, a recommended number of transmit antennas.

Alternatively, the proposed number of receiving antennas may be the number of receiving antennas for antenna switching, or the number of antennas for data reception, or the number of antennas for downlink control channel reception, or the number of antennas for data reception and downlink control channel reception.

Alternatively, the proposed 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.

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

the terminal device may have a desired antenna switching configuration, a desired number of receive antennas, a desired number of transmit antennas.

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

alternatively, the number of receive antennas desired by the terminal device may include, but is not limited to, at least one of: 1,2,4,6,8.

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

Optionally, the terminal device may indicate, to the network device, an antenna switching manner that is desired to be adopted according to its own capability or transmission requirement, etc., so that the network device may perform appropriate configuration on the terminal device to optimize the configuration of the terminal device or meet the requirement 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 this application.

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

MAC CE, uplink control information (Uplink Control Information, UCI), physical uplink control channel (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.

Alternatively, the fourth indication information may include one or more serving cell IDs or serving cell index. 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 for the serving cell ID or the serving cell corresponding to serving cell index.

Optionally, the fourth indication information may include one or more component carrier indications or identifiers, and the third indication information may be applied to serving cells on carriers corresponding to the one or more component carrier indications or identifiers. Alternatively, the third indication information is applied to the serving cell on other carriers than the one or more component carrier indications or identifications.

Alternatively, in the case where 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.

Alternatively, the fourth indication information may include one or more BWP IDs or BWP indices. The third indication information may be applied to an upstream BWP corresponding to the BWP ID or BWP index. Alternatively, the first indication information is applied to other uplink BWP except the corresponding uplink BWP of the BWP ID or BWP index.

Alternatively, in case that 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, where the fifth indication information is used to indicate at least one of the following:

the SRS resource set which is suggested by the terminal equipment and is not used for transmission;

the terminal equipment suggests that the SRS resource is not used for transmission;

the SRS ports which are suggested by the terminal equipment and are not used for transmission;

the SRS resource set recommended by the terminal equipment for transmission;

the SRS resource recommended by the terminal equipment for transmission;

The terminal device suggests SRS ports for transmission.

That is, the terminal device may suggest an SRS resource set granularity, and/or an SRS resource granularity, and/or a transmission status indication of 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 proposed by the terminal device may be an SRS port not used for transmission corresponding to the SRS resource proposed by the terminal device for transmission, or may also be an SRS port not used for transmission corresponding to all SRS resources in the SRS resource set proposed by the terminal device for transmission.

That is, the SRS ports proposed by the terminal device and not used for transmission may correspond to specific SRS resources, or may correspond to all SRS resources in the SRS resource set.

Optionally, the SRS port for transmission proposed by the terminal device may be an SRS port for transmission corresponding to the SRS resource for transmission proposed by the terminal device, or may also be an SRS port for transmission corresponding to all SRS resources in the SRS resource set proposed by the terminal device.

That is, the SRS port proposed 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 the desired SRS resource dynamic indication to the network device according to its own capability or transmission requirement, so that the network device may perform appropriate configuration on the terminal device to meet the requirement of the terminal device.

In some embodiments, the fifth indication information may include:

the indication information of the SRS resource set proposed by the terminal device and not used for transmission, for example, an ID, an index of the SRS resource set, or numbers, serial numbers, or the like of the SRS resource in the plurality of SRS resource sets, which is not limited to this.

In some embodiments, the fifth indication information may include:

the indication information of the SRS resource set proposed by the terminal device for transmission, for example, an ID, an index of the SRS resource set, or numbers, serial numbers, or the like of the SRS resource in the plurality of SRS resource sets, the present application is not limited thereto.

In some embodiments, the fifth indication information may include: the indication information of the SRS resource proposed by the terminal device and not used for transmission, for example, an ID, an index of the SRS resource, or a number, a sequence number, or the like of the SRS resource in the corresponding SRS resource set, which is not limited to this.

In some embodiments, the fifth indication information may include:

The indication information of the SRS resource proposed by the terminal device for transmission, for example, an ID, an index of the SRS resource, or a number, a sequence number, or the like of the SRS resource in the corresponding SRS resource set, the present application is not limited thereto.

In other embodiments, the terminal device may also indicate, by using a bitmap, the SRS resources proposed for transmission in one SRS resource set and the SRS resources proposed for no transmission, and the specific indication manner refers to the description related to the first bitmap, which is not described herein for brevity.

In some embodiments, the fifth indication information may include:

the indication information of the SRS port proposed by the terminal device for transmission, for example, a port number, an index of the SRS port, or a number, a sequence number, or the like of the SRS port in the corresponding SRS resource, which is not limited to this.

In some embodiments, the fifth indication information may include:

the indication information of the SRS port proposed by the terminal device and not used for transmission, for example, the port number, index, or number, sequence number, or the like of the SRS port in the corresponding SRS resource, which is not used for transmission, and the present application is not limited to this.

In other embodiments, the terminal device may also indicate, by using a bitmap, the proposed SRS ports for transmission and the proposed SRS ports not for transmission in one SRS resource, and the specific indication manner refers to the description related to the second bitmap, which is not described herein for brevity.

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 this application.

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

In some embodiments, the third information further includes sixth indication information, where the sixth indication information is used to indicate an 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.

Alternatively, the sixth indication information may include one or more serving cell IDs or serving cell index. 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 than the serving cell ID or serving cell index corresponding serving cell.

Optionally, the sixth indication information may include one or more component carrier indications or identifiers, and the fifth indication information may be applied to serving cells on carriers corresponding to the one or more component carrier indications or identifiers. Alternatively, the fifth indication information is applied to the serving cell on other carriers than the one or more component carrier indications or identifications.

Alternatively, in the case where the serving cell to which the fifth indication information corresponds is not indicated, the fifth indication information may be defaulted to correspond to the current serving cell.

Alternatively, the sixth indication information may include one or more BWP IDs or BWP indices. The fifth indication information may be applied to an upstream BWP corresponding to the BWP ID or BWP index. Alternatively, the fifth indication information may be applied to other upstream BWP other than the upstream BWP corresponding to the BWP ID or BWP index.

Alternatively, in case that 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 further comprises:

and S203, the terminal equipment reports first capability information to the network equipment, wherein the first capability information indicates that the terminal equipment supports SRS transmission according to at least one of the first information, an antenna switching dynamic indication and an SRS resource dynamic indication.

That is, the terminal device may indicate to the network device that the terminal device supports SRS resource dynamic indication, or, in other words, the network device supports the network device to change the SRS resource set parameter in an SRS resource dynamic indication manner, so that the network device may send an SRS resource dynamic indication when the RS resource set parameter needs to be changed, to indicate a change of a transmission state of the SRS resource set parameter, or, after the change, the transmission state of the SRS resource set parameter does not need to be reconfigured through RRC signaling, so that the terminal device may perform SRS transmission according to the SRS resource dynamic indication, which is favorable to reduce a time delay of changing the antenna switching mechanism, realize rapid adjustment of the SRS resource set parameter, and also is favorable to 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 by the present application.

In some embodiments, the first capability information is carried by at least one of: MAC CE, 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 the serving cells on the target frequency band and/or the serving cells on the target carrier may be configured in the same serving cell list.

Optionally, after the network device learns the target frequency band information, it may be learned that the terminal device may use the same antenna on the target frequency band, so that the foregoing first serving cell list or the first carrier list may be generated based on the target frequency band information.

Optionally, after the network device acquires the target frequency band and the target carrier information, it may be acquired that the target carrier of the terminal device on the target frequency band may use the same antenna, so that the first serving cell list or the first carrier list described above may be generated based on the target frequency band and the target carrier information.

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

The system comprises a frequency band, a frequency band combination, each frequency band in the frequency band combination, each carrier wave on each frequency band in the frequency band combination, a frequency band range and user equipment.

For example, the first capability information is reported for a frequency band (band), that is, different frequency bands may independently report corresponding first capability information. I.e. the first capability information is per band (per band) granularity. The terminal device independently reports the corresponding first capability information according to different frequency bands, so that flexibility of reporting the first capability information by the terminal device is improved, for example, the terminal device can report that the terminal device supports SRS transmission according to the SRS resource dynamic indication on the first frequency band, and does not support SRS transmission according to the SRS resource dynamic indication on other frequency bands, 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 for Band Combination (BC), that is, different band combinations may independently report the corresponding first capability information. I.e. the first capability information is per bin combination (per BC) granularity. The terminal device independently reports the corresponding first capability information according to different frequency band combinations, so that flexibility of reporting the first capability information by the terminal device is improved, for example, the terminal device can report that the terminal device supports SRS transmission according to the SRS resource dynamic indication on the first frequency band combination, and does not support SRS resource dynamic indication to perform SRS transmission on other frequency band combinations, 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 report the corresponding first capability information independently. I.e. the first capability information is per band per BC granularity per band combination. The terminal device independently reports the corresponding first capability information for each frequency band in different frequency band combinations, so that flexibility of reporting the first capability information by the terminal device is improved, for example, the terminal device can report that the first frequency band combination does not support SRS transmission according to the SRS resource dynamic indication, and support SRS resource dynamic indication to perform SRS transmission 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, i.e., each carrier on each frequency band in a different frequency band combination may report the corresponding first capability information independently. I.e. the first capability information is per band per carrier per band (per CC per band per BC) granularity of the combination per band. The terminal device independently reports the corresponding first capability information for each carrier in each frequency band in different frequency band combinations, so that the flexibility of reporting the first capability information by the terminal device is improved, for example, the terminal device can report that the terminal device does not support SRS transmission according to the SRS resource dynamic indication on the first frequency band combination, and support SRS resource dynamic indication on a certain carrier in 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 for a Frequency Range (FR), that is, different FR may independently report the corresponding first capability information. That is, the first capability information is granularity per FR (per FR), for example, the first frequency band range (FR 1) and the second frequency band range (FR 2) report the corresponding first capability information independently. The terminal device independently reports the corresponding first capability information for different FRs, so that flexibility of reporting the first capability information by the terminal device is improved, for example, the terminal device may not support SRS transmission according to the SRS resource dynamic indication on FR1 and not support SRS resource dynamic indication on FR2, so that more terminal devices may support SRS transmission according to the SRS resource dynamic indication.

s220, the terminal equipment 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

And the terminal equipment 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 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 a trigger signaling (e.g., DCI) of the network device.

Hereinafter, the specific implementation of the first information will be described by taking 2T4R type antenna switching as an example, but the present application is not limited thereto.

Specifically, the network device configures a first SRS resource set for the terminal device through RRC signaling for 2T4R type antenna switching, where the first SRS resource set includes 2 SRS resources (respectively referred to as SRS resource a and SRS resource B), and each SRS resource includes 2 SRS ports (respectively referred to as SRS port a and SRS port B).

Optionally, a usage (field) field in the RRC information element (Information Element, IE) corresponding to the first SRS resource set is set to "antenna switching", which indicates that the first SRS resource set is used for antenna switching.

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

And when the terminal equipment performs SRS transmission, performing SRS transmission according to the 2 SRS resources.

Embodiment one:

in this embodiment one, the network device may perform transmission status indication of SRS resource granularity.

The terminal equipment receives first information sent by the network equipment through the MAC CE signaling, wherein the first information comprises first indication information, and the first indication information is used for indicating 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 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.

When the terminal device performs SRS transmission, only SRS resource a is transmitted according to SRS resource a, or only SRS resource a is transmitted.

And the terminal equipment performs transmission according to the first SRS resource set, which is equivalent to 2T2R transmission, through the transmission state indicated by the first indication information.

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

For another example, when the terminal device desires to change from the antenna switching of 2T4R to the antenna switching of 2T2R (e.g., due to power consumption), the terminal device may indicate that the SRS resource proposed for transmission is SRS resource B or the SRS resource proposed for transmission is SRS resource a through the third information, or that only one of the two SRS resources is proposed for transmission, the network device may indicate that one of the two SRS resources (e.g., SRS resource a) is used for SRS transmission through the first information, that is, indicate a change in transmission state of the SRS resource, or the transmission state after the SRS resource change, without reconfiguring the SRS resource set parameter through RRC signaling, which is beneficial to reduce signaling overhead.

Optionally, the terminal device may further 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 the serving cell 1, the first indication information is applied to all the serving cells in the serving cell list corresponding to the serving cell 1, that is, to the serving cell 1 and the serving cell 3.

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

Mode 1: assuming that the ID of the first SRS resource set is Z, SRS resource a is the first SRS resource in the SRS resource set. The first indication information may indicate that a first resource of the SRS resource set with ID Z in the serving cell 3 is used for SRS transmission.

Mode 2: the first SRS resource set has an ID Z, SRS resource a has an ID1, and SRS resource B has an ID DI2. The first indication information may indicate that the SRS resource with ID1 in the serving cell 3 is used for SRS transmission.

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

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

mode 1: assuming that the ID of the first SRS resource set is Z, SRS resource B is the second SRS resource in the SRS resource set. The first indication information may indicate that a second resource of the SRS resource set with ID Z in the serving cell 3 is not used for SRS transmission.

Mode 2: the first SRS resource set has an ID Z, SRS resource B has an ID2, and SRS resource B has an ID DI2. The first indication information may indicate that the SRS resource with ID2 in the serving cell 3 is not used for SRS transmission.

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

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

the indication information of the SRS resource A indicates that the SRS resource A is used for SRS transmission.

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

the cell indication information may be, for example, a cell ID, and is used for indicating a cell corresponding to the first indication information;

the BWP indication information may be, for example, a BWP ID, configured to indicate an uplink BWP corresponding to the first indication information;

indication information of the first SRS resource set, for example, 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 format schematic diagram of a MAC CE according to example 1.

It should be understood that the locations and sizes of the various fields (or domains) in the MAC CE illustrated below are merely examples, which may be designed and adjusted according to the size of the information actually carried, and that some domains in the MAC CE may also be absent, such as a cell ID domain, a BWP ID domain, etc., to which the present application is not limited.

The cell ID in fig. 4 corresponds to the cell indication information of the preamble, the BWP ID corresponds to the BWP indication information of the preamble, 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 the SRS resource a, and R represents a reserved bit, and optionally, the R may 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 "antannaswitching".

Optionally, if the first SRS resource set includes more SRS resources, for example, in 1T4R, one SRS resource set may include 4 SRS resources, and there are multiple SRS resources for transmission, a MAC CE format illustrated in fig. 4 may include a field of multiple SRS resource IDs. Fig. 5 is a format diagram of a MAC CE exemplified by indicating 2 SRS resources for transmission.

Alternatively, if there are multiple SRS resource sets, the MAC CE format may be similarly extended, and taking 2 SRS resource sets as an example, as shown in fig. 6, the MAC CE may 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 is used to indicate that SRS Resource in SRS Resource set indicated by SRS Resource set ID 1 is used for transmission.

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

It should be understood that the number of SRS resources for transmission in each SRS resource set illustrated in fig. 6 is merely an example, and the present application is not limited thereto.

For the foregoing example 2, the mac CE signaling may include:

and the indication information of the SRS resource B indicates that the SRS resource B is used for SRS transmission.

For example 2, the network device may indicate SRS resources not used for transmission in the similar MAC CE format in fig. 4 to 6, except that the SRS resource ID corresponds to indication information of SRS resource B, i.e., an ID of the SRS resource not used for SRS transmission.

For the foregoing example 3, the following may be included in the mac CE signaling:

the indication information of the SRS resource A, namely the indication that the SRS resource A is used for SRS transmission;

the indication information of the SRS resource B, that is, the indication that the SRS resource B is not used for SRS transmission.

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

In this example 3, the network device may indicate SRS resources for SRS transmission and not for SRS transmission in one set of SRS resources by way of a bitmap.

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

the BWP ID corresponds to the BWP indication information of the preamble;

the SRS resource set ID corresponds to the indication information of the first SRS resource set, optionally, a user of the SRS resource set indicated by the SRS resource set ID is set to 'antannaswitching';

c1 to C8 correspond to the first bitmaps of the foregoing, respectively. Indicating whether SRS resources in one SRS resource set are used for transmission or not in a bitmap mode;

r represents a reserved bit, which may alternatively be used to indicate other information.

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

Optionally, ci is related to the size of SRS resource ID. For example, the IDs corresponding to the SRS resources in the first SRS resource set correspond to C1 to C8 in order from the largest. For another example, the IDs corresponding to the SRS resources in the first SRS resource set sequentially correspond to C1 to C8 in order from the smallest ID to the largest ID.

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

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, a value of 0 indicates that the corresponding SRS resource is not used for transmission, or 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 appreciated that the number of bits actually carrying information in the 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, four bits (e.g., C1-C4, or C5-C8) of the C1-C8 carry information, and other bits are ignored, or otherwise do not require interpretation.

It should be understood that the order of bits in fig. 7 is merely exemplary, and that the order of C8-C1 may be used, as the application is not limited in this respect.

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

As an example, the first indication field may be implemented by an R field in the MAC CE, in which case the R field may be denoted as an F field, where a value of the F field is used to indicate that all SRS resources in the first SRS resource set are used for transmission, or none are used for transmission.

For example, taking a first value indicates that all SRS resources in the first SRS resource set are used for transmission, and taking a 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.

Fig. 8 is a schematic diagram of a MAC CE format including a first indication field (i.e., F field), and byte 3 (oct 3) in fig. 7 may not be included in the MAC CE when all SRS resources in one SRS resource set are used for transmission or are not used for transmission.

In other embodiments, the F-domain takes a first value to indicate that all SRS resources in the first SRS resource set are used for transmission, in which case the MAC CE may take a second value to indicate that SRS resources in the first SRS resource set are present for transmission or SRS resources not used for transmission, as shown in fig. 8. Further, which SRS resources are used for transmission and which SRS resources are not used for transmission may be indicated by a bitmap, in which case the MAC CE format may be as shown in fig. 9, where the meaning of each bit in byte 3 refers to the relevant description in fig. 7. Alternatively, the MAC CE format may be as shown in fig. 4 or fig. 5, as described above.

It should be understood that the location of the F-domain in fig. 8 and 9 is only an example, and the F-domain may also be implemented using other R-domains in the MAC CE, which is not limited by the present application.

Alternatively, if it is required to indicate whether the SRS resources in the plurality of SRS resource sets are used for SRS transmission by bitmap, the expansion may be performed based on the MAC CE format in fig. 8 and 9. Taking 2 SRS resources sets as an example, as shown in fig. 10, each SRS resource set corresponds to a bitmap, where C1 to C8 in a row corresponding to byte 3 (Oct 3) are used to indicate whether SRS resources in the SRS resources set indicated by SRS resource set ID are used for transmission, and C1 to C8 in a row corresponding to byte 5 (Oct 5) are used to indicate whether SRS resources in the SRS resources set indicated by SRS resource set ID are used for transmission. As shown in fig. 11, when the F field value is the second value, each SRS resource set corresponds to a bitmap, where C1 to C8 in the row corresponding to byte 3 (Oct 3) are used to indicate whether SRS resource in the SRS resource set indicated by SRS resource set ID is used for transmission, and C1 to C8 in the row corresponding to byte 5 (Oct 5) are used to indicate whether SRS resource in the SRS resource set indicated by SRS resource set ID is used for transmission.

Embodiment two:

In this second embodiment, the network device may perform transmission status indication of SRS port granularity.

example 4: the first indication information indicates SRS port a for transmission.

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

Example 6: the first indication information indicates SRS port a for transmission and indicates SRS port B not for transmission.

Then, when the terminal device performs SRS transmission, only SRS is transmitted from SRS port a.

And the terminal equipment performs SRS transmission according to the first SRS resource set by using the SRS port transmission state indicated by the first indication information, which is equivalent to 1T2R transmission. I.e., the SRS resources corresponding to a single port per transmission.

For example, when the terminal device desires to change from the antenna switching of 2T4R to the antenna switching of 1T2R (e.g., due to power consumption considerations), the terminal device may indicate that the desired antenna switching is configured to 1T2R through the second information, and the network device may indicate that one SRS port in the SRS resource is not used for SRS transmission through the first information, that is, indicate a change in a transmission state of the SRS port, or indicate the transmission state after the SRS port is changed, without reconfiguring the SRS resource set parameter through RRC signaling, which is beneficial to reducing signaling overhead.

For another example, when the terminal device desires to change from the antenna switching of 2T4R to the antenna switching of 1T2R (e.g., due to power consumption), the terminal device may indicate that the SRS port that is not used for transmission is SRS resource B, or that the SRS port that is used for transmission is SRS port a, or that only one of the two SRS ports is used for transmission, through the third information, and the network device may indicate that one of the two SRS ports (e.g., SRS port a) is used for SRS transmission through the first information, that is, indicate a change in the transmission state of the SRS port, or indicate the transmission state after the SRS port is changed, without reconfiguring the SRS resource set parameter through RRC signaling, which is beneficial for reducing signaling overhead.

Optionally, the terminal device may further 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 the serving cell 1, the first indication information is applicable to all the serving cells in the serving cell list corresponding to the serving cell 1, that is, the serving cell 1 and the serving cell 3.

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

For the foregoing example 4, the mac CE signaling may include:

the indication information of the SRS port A indicates that the SRS port A is used for SRS transmission.

indication information of SRS resources corresponding to the SRS ports, such as SRS resource IDs;

Fig. 12 is a format schematic diagram of a MAC CE according to example 4.

The cell ID in fig. 12 corresponds to the cell indication information of the preamble, the BWP ID corresponds to the BWP indication information of the preamble, the SRS resource set ID corresponds to the indication information of the first SRS resource set, the SRS port indicates the indication information corresponding to the SRS port a, and R represents a reserved bit, and optionally, R may 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 'anticnnaswitching';

Alternatively, if there are multiple SRS resource sets, the MAC CE format in fig. 12 may be similarly extended, and, taking 2 SRS resource sets as an example, as shown in fig. 13, the MAC CE may include:

the SRS port indicates 1, and is used for indicating an SRS port for transmission of the SRS resource in the SRS resource set indicated by SRS resource set ID 1.

The SRS port indicates 2, and is used for indicating an SRS port for transmission of the SRS resource in the SRS resource set indicated by SRS resource set ID 2.

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

the indication information of the SRS port B indicates that the SRS port B is used for SRS transmission.

indication information of SRS resources corresponding to SRS port B, for example, SRS resource ID;

For example 5, similar MAC CE formats in fig. 12-13 may be employed to indicate SRS ports not used for transmission, except that the SRS port indication corresponds to SRS ports not used for SRS transmission.

For the foregoing example 6, the following are included in the mac CE signaling:

the indication information of the SRS port A, namely, the indication that the SRS port A is used for SRS transmission;

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

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

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

In some implementations, this example 6 may employ the format indication of the MAC CE in fig. 14. In this case, the meaning of each field in fig. 14 is as follows:

the cell ID corresponds to the cell indication information of the preamble;

the BWP ID corresponds to the BWP indication information of the preamble;

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

P1-P8 respectively correspond to the second bitmap of the previous, and indicate whether all SRS ports included in one SRS resource are used for transmission or not in a bitmap mode;

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

The Pi value 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 the 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 (e.g., P1-P4, or P5-P8) of the P1-P8 carry information, and other bits are ignored, or otherwise, interpretation is not required.

It should be understood that the order of bits in fig. 14 is merely exemplary, and that the ordering of P8-P1 may also be employed, as the application is not limited in this regard.

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

For example, the second indication field may be an R field in the MAC CE, in which case the R field may also be denoted as an F field, where the value of the F field is used to indicate that all SRS ports of the SRS resource are used for transmission, or none are 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 of 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 (i.e., F-field) may also employ the format of fig. 8.

In other embodiments, the F-field takes a first value to indicate that all SRS ports of the SRS resource are used for transmission, in which case the MAC CE may be as shown in fig. 15, and the F-field takes a second value to indicate that the SRS resource includes an SRS port used for transmission, or that there is an SRS port not used for transmission, in which case the MAC CE format may be as shown in fig. 16.

It should be understood that the location of the F-domain in fig. 15 and 16 is only an example, and the F-domain may also be implemented using other R-domains in the MAC CE, which is not limited by the present application.

Alternatively, if it is required to indicate whether the SRS ports in the plurality of SRS resource sets are used for SRS transmission in a bitmap manner, the expansion may be performed based on the MAC CE format in fig. 15 and 16. Taking 2 SRS resources sets as an example, as shown in fig. 17, each SRS resource set corresponds to a bitmap, where P1 to P8 in a row corresponding to byte 3 (Oct 3) are used to indicate whether an SRS port included in the SRS resource set indicated by SRS resource set ID is used for transmission, and P1 to P8 in a row corresponding to byte 5 (Oct 5) are used to indicate whether an SRS port of the SRS resource set indicated by SRS resource set ID is used for transmission. As shown in fig. 18, when the F field value is the second value, each SRS resource set corresponds to a bitmap, where P1 to P8 in the row corresponding to byte 3 (Oct 3) are used to indicate whether the SRS port of the SRS resource in the SRS resource set indicated by SRS resource set ID is used for transmission, and P1 to P8 in the row corresponding to byte 5 (Oct 5) are used to indicate whether the SRS port of the SRS resource in the SRS resource set indicated by SRS resource set ID is used for transmission.

It should be understood that the above-described first embodiment and second embodiment may be implemented alone or in combination, for example, the foregoing examples 1 to 3 may be combined with any one of examples 4 to 6.

In combination, the MAC CE format may carry information in the two embodiments, for example, the indication information of the SRS resource and the SRS port indication, where the MAC CE format may be flexibly adjusted according to the information content that needs to be carried, for example, the MAC CE format carrying the SRS resource indication information and the SRS port indication information may be as shown in fig. 19, it should be understood that the content of byte 3 in fig. 19 may be replaced with byte 3 in fig. 7, and the content of byte 4 in fig. 19 may be replaced with byte 3 in fig. 14.

In summary, the network device may dynamically indicate the SRS resource set parameter that is changed by indicating the transmission state of the SRS resource set parameter through the first information, for example, the SRS resource set parameter that needs to be changed due to the change of the antenna switching mechanism, without reconfiguring the SRS resource set parameter through RRC, so as to implement dynamic indication of the SRS resource, thereby being beneficial to reducing delay of the change of the antenna switching mechanism, implementing fast adjustment of the SRS resource set parameter, and reducing signaling overhead.

The method embodiment of the present application is described in detail above with reference to fig. 3 to 19, and the apparatus embodiment of the present application is described in detail below with reference to fig. 20 to 24, it being understood that the apparatus embodiment and the method embodiment correspond to each other, and similar descriptions can be made with reference to the method embodiment.

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

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

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

A media access control element MAC CE, downlink control information DCI.

In some embodiments of the present application, the communication unit 410 is further configured to:

and receiving first configuration information sent by the network equipment, wherein the first configuration information is used for configuring at least one SRS resource set, and the at least one SRS resource set comprises the first SRS resource set.

In some embodiments of the present application, a 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-continuous, periodic; or alternatively

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

In some embodiments of the present application, the first indication information includes a first indication field, where 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 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 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.

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, where the first bitmap includes a plurality of bits, each bit corresponds to one SRS resource in the first SRS resource set, and a value of each bit 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:

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

the indication information of the at least one second SRS port includes: and the 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, where the second bitmap includes a plurality of bits, each bit corresponds to one SRS port of the third SRS resource, and a value of each bit 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, where the second indication field is used to indicate that all SRS ports of a third SRS resource in the first SRS resource set are not used for SRS transmission, or that 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, where the second indication information is used to indicate a serving cell corresponding to the first indication information and/or a bandwidth portion BWP corresponding to the first indication information.

In some embodiments of the present application, if the serving cell indicated by the second indication information belongs to a first serving cell list, the first indication information corresponds to all serving cells in the first serving cell list, where 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.

transmitting second information to the network device, wherein the second information comprises third indication information, and the third indication information is used for indicating at least one of the following: a recommended antenna switching configuration, a recommended number of receive antennas, a recommended number of transmit antennas.

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

MAC CE, UCI, physical uplink control channel PUCCH.

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

transmitting third information to the network device, the third information including fifth indication information for indicating at least one of:

the SRS resources which are not used for transmission and suggested by the terminal equipment;

the SRS resource set recommended by the terminal equipment for transmission;

the SRS resource recommended by the terminal equipment for transmission;

the terminal device suggests SRS ports for transmission.

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

MAC CE, UCI, physical uplink control channel PUCCH.

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

and reporting first capability information to the network equipment, wherein the first capability information indicates that the terminal equipment 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 application, the first capability information is sent by radio resource control, RRC, signaling and/or MAC CE.

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

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

performing SRS transmission on the at least one SRS resource in the first SRS resource set; and/or

And SRS transmission is carried out on at least one first SRS port of the third SRS resource.

Alternatively, in some embodiments, the communication unit may be a communication interface or transceiver, or an input/output interface of a communication chip or a system on a chip. The 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 embodiment of the method of the present application, and the above and other operations and/or functions of each unit in the terminal device 400 are respectively for implementing the corresponding flow of the terminal device in the method 200 shown in fig. 3 to 19, which are not repeated herein for brevity.

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 a terminal device, where the first information includes first indication information, where the first indication information is used to indicate at least one of the following:

a media access control element MAC CE, downlink control information DCI.

In some embodiments of the present application, the communication unit 510 is further configured to:

and sending first configuration information to the terminal equipment, wherein the first configuration information is used for configuring at least one SRS resource set, and the at least one SRS resource set comprises 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 of claims 1-16, wherein the first information further comprises second indication information, the second indication information being used for indicating a serving cell to which the first indication information corresponds and/or a bandwidth portion BWP to which the first indication information corresponds.

receiving second information sent by the terminal equipment, wherein the second information comprises third indication information, and the third indication information is used for indicating at least one of the following: a recommended antenna switching configuration, a recommended number of receive antennas, a recommended number of transmit antennas.

MAC CE, UCI, physical uplink control channel PUCCH.

In some embodiments of the application, the communication unit is further configured to:

receiving third information sent by the terminal equipment, wherein the third information comprises fifth indication information, and the fifth indication information is used for indicating at least one of the following:

the SRS resource set recommended by the terminal equipment for transmission;

the SRS resource recommended by the terminal equipment for transmission;

the terminal device suggests SRS ports for transmission.

MAC CE, UCI, physical uplink control channel PUCCH.

and receiving first capability information reported by the terminal equipment, wherein the first capability information indicates that the terminal equipment 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 the at least one SRS resource in the first SRS resource set; 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 embodiment of the method of the present application, and the above and other operations and/or functions of each unit in the network device 500 are respectively for implementing the corresponding flow of the network device in the method 200 shown in fig. 3 to 19, which are not repeated herein for brevity.

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 comprises a processor 610, from which the processor 610 may call and run a computer program to implement the method in an embodiment of the application.

Optionally, as shown in fig. 22, the communication device 600 may further comprise a memory 620. Wherein the processor 610 may call and run a computer program from the memory 620 to implement the method in an embodiment of the application.

The memory 620 may be a separate device from the processor 610 or may be integrated into 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, and in particular, may send information or data to other devices, or receive information or data sent by other devices.

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

Optionally, the communication device 600 may be specifically a network device according to the embodiment of the present application, and the communication device 600 may implement a corresponding flow implemented by the network device in each method according to the embodiment of the present application, which is not described herein for brevity.

Optionally, the communication device 600 may be specifically a mobile terminal/terminal device according to an embodiment of the present application, and the communication device 600 may implement corresponding processes implemented by the mobile terminal/terminal device in each method according to the embodiment of the present application, which are not described herein for brevity.

Fig. 23 is a schematic structural view of a chip of an embodiment of the present application. The chip 700 shown in fig. 23 includes a processor 710, and the processor 710 may call and run a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, as shown in fig. 23, chip 700 may also include memory 720. Wherein the processor 710 may call and run a computer program from the memory 720 to implement the method in an embodiment of the application.

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

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

Optionally, the chip 700 may further include an output interface 740. The processor 710 may control the output interface 740 to communicate with other devices or chips, and in particular, may output information or data to other devices or chips.

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

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

It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, or the like.

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.

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

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

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

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

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

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

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

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

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

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

The embodiment of the application also provides a computer program.

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

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

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

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

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

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

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

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

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

Claims

A method of wireless communication, comprising:

the terminal equipment receives first information sent by the network equipment, 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 SRS resource in the first sounding reference signal, SRS, resource set is used for SRS transmission; or (b)

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

At least one first SRS port of at least one third SRS resource in the first SRS resource set is used for SRS transmission; or (b)

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

A media access 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, wherein the first configuration information is used for configuring at least one SRS resource set, and the at least one SRS resource set comprises the first SRS resource set.
The method of 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-continuous, periodic; or alternatively

The resource type corresponding to the first SRS resource set in the first configuration information is one of the following: non-periodic, semi-continuous, periodic.
The method of any of claims 1-4, wherein the first indication information comprises a first indication field that indicates that none of the SRS resources in the first set of SRS resources are used for SRS transmission or that none of the SRS resources in the first set of SRS resources are used for SRS transmission.
The method of any one of claims 1-4, wherein the first indication information comprises:

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 6, wherein the step of providing the first layer comprises,

the indication information of the at least one first SRS resource includes: an 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 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 by means of a bitmap.
The method of claim 8, wherein the first indication information comprises a first bitmap comprising a plurality of bits, each bit corresponding to one of the SRS resources in the first set of SRS resources, the value of each bit being 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 comprises at least one of:

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 10, wherein the step of determining the position of the first electrode is performed,

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

the indication information of the at least one second SRS port includes: and the port number of the at least one second SRS port.
The method according to any 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 by way of a bitmap.
The method of claim 12, wherein the first indication information comprises a second bitmap comprising a plurality of bits, each bit corresponding to one SRS port of the third SRS resource, and wherein a 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 of any of claims 1-13, wherein the first indication information comprises a second indication field that indicates that none of the SRS ports of a third SRS resource in the first set of SRS resources are used for SRS transmission or that none of the SRS ports of the third SRS resource are used for SRS transmission.
The method of any one of claims 1-14, wherein the first indication information further comprises:

indication information of the at least one third SRS resource.
The method of any of claims 1-15, wherein the first indication information further comprises indication information of the first SRS resource set.
The method according to any one of claims 1-16, wherein the first information further comprises second indication information, the second indication information being used for indicating a serving cell to which the first indication information corresponds and/or a bandwidth portion BWP to which the first indication information corresponds.
The method of claim 17, wherein the first indication information corresponds to all cells in a first cell list if the cells indicated by the second indication information belong to the first cell list, wherein the first cell list is used to indicate at least one cell.
The method according to any 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, wherein the second information comprises third indication information, and the third indication information is used for indicating at least one of the following: a recommended antenna switching configuration, a recommended number of receive antennas, a recommended number of transmit antennas.
The method of claim 20, wherein the second information is carried by at least one of:

MAC CE, UCI, physical uplink control channel PUCCH.
The method according to claim 20 or 21, wherein the second information further comprises fourth indication information, the fourth indication information being used for indicating a serving cell corresponding to the third indication information and/or a 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, wherein the third information comprises fifth indication information, and the fifth indication information is used for indicating at least one of the following:

the SRS resource set which is suggested by the terminal equipment and is not used for transmission;

the SRS resources which are not used for transmission and suggested by the terminal equipment;

The SRS ports which are suggested by the terminal equipment and are not used for transmission;

the SRS resource set recommended by the terminal equipment for transmission;

the SRS resource recommended by the terminal equipment for transmission;

the terminal device suggests SRS ports for transmission.
The method of claim 23, wherein the third information is carried by at least one of:

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

and the terminal equipment reports first capability information to the network equipment, wherein the first capability information indicates that the terminal equipment supports SRS transmission according to at least one of the first information, the antenna switching dynamic indication and the SRS resource dynamic indication.
The method of claim 26, wherein the first capability information is sent by 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 a target frequency band and/or a target carrier, and the serving cells on the target frequency band and/or the serving cells on the target carrier are configurable in the same serving cell list.
The method of any of claims 26-28, wherein the configuration granularity of the first capability information comprises at least one of:

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

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

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

the network device sends first information to the terminal 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 SRS resource in the first sounding reference signal, SRS, resource set is used for SRS transmission; or (b)

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

At least one first SRS port of at least one third SRS resource in the first SRS resource set is used for SRS transmission; or (b)

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

a media access control element MAC CE, downlink control information DCI.
The method according to claim 31 or 32, characterized in that the method further comprises:

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 of 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-continuous, periodic; or alternatively

The resource type corresponding to the first SRS resource set in the first configuration information is one of the following: non-periodic, semi-continuous, periodic.
The method of any of claims 31-34, wherein the first indication information comprises a first indication field that indicates that none of the SRS resources in the first set of SRS resources are used for SRS transmission or that none of the SRS resources in the first set of SRS resources are used for SRS transmission.
The method of any one of claims 31-34, wherein the first indication information comprises:

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 step of determining the position of the probe is performed,

the indication information of the at least one first SRS resource includes: an 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 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 by means of a bitmap.
The method of claim 38, wherein the first indication information comprises a first bitmap comprising a plurality of bits, each bit corresponding to one of the SRS resources in the first set of SRS resources, the value of each bit being used to indicate whether the corresponding SRS resource is used for SRS transmission.
The method of any one of claims 31-39, wherein the first indication information includes at least one of:

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 step of,

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

the indication information of the at least one second SRS port includes: and the port number of the at least one second SRS port.
The method of any 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 by way of a bitmap.
The method of claim 42, wherein the first indication information comprises a second bitmap comprising a plurality of bits, each bit corresponding to one SRS port of the third SRS resource, and wherein 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 of any one of claims 31-43, wherein the first indication information further comprises: indication information of the at least one third SRS resource.
The method of any of claims 31-44, wherein the first indication information comprises a second indication field that indicates that none of the SRS ports of a third SRS resource in the first set of SRS resources are used for SRS transmission or that none of the SRS ports of the third SRS resource are used for SRS transmission.
The method of any one of claims 31-45, wherein the first indication information further comprises indication information of the first SRS resource set.
The method according to any one of claims 31-46, wherein the first information further comprises second indication information, the second indication information being used for indicating a serving cell to which the first indication information corresponds and/or a bandwidth portion BWP to which the first indication information corresponds.
The method of claim 47, wherein if the serving cell indicated by the second indication information belongs to a first serving cell list, the first indication information corresponds to all serving cells in the first serving cell list, 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 a same frequency band.
The method of any one of claims 31-49, further comprising:

the network device receives second information sent by the terminal device, wherein the second information comprises third indication information, and the third indication information is used for indicating at least one of the following: a recommended antenna switching configuration, a recommended number of receive antennas, a recommended number of transmit antennas.
The method of claim 50, wherein the second information is carried by at least one of:

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, the fourth indication information being used for indicating a serving cell corresponding to the third indication information and/or a BWP corresponding to the third indication information.
The method of any one of claims 51-52, further comprising:

the network device receives third information sent by the terminal device, wherein the third information comprises fifth indication information, and the fifth indication information is used for indicating at least one of the following:

the SRS resource set which is suggested by the terminal equipment and is not used for transmission;

the SRS resources which are not used for transmission and suggested by the terminal equipment;

the SRS ports which are suggested by the terminal equipment and are not used for transmission;

the SRS resource set recommended by the terminal equipment for transmission;

the SRS resource recommended by the terminal equipment for transmission;

the terminal device suggests SRS ports for transmission.
The method of claim 53, wherein the third information is carried by at least one of:

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, where the sixth indication information is used to indicate a serving cell corresponding to the fifth indication information and/or a BWP corresponding to the sixth indication information.
The method of any one of claims 31-55, further comprising:

The network device receives first capability information reported by the terminal device, wherein 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.
The method of claim 26, wherein the first capability information is sent by 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 a target frequency band and/or a target carrier, and the serving cells on the target frequency band and/or the serving cells on the target carrier are configurable in the same serving cell list.
The method of any of claims 26-28, wherein the configuration granularity of the first capability information comprises at least one of:

the system comprises a frequency band, a frequency band combination, each frequency band in the frequency band combination, each carrier wave on each frequency band in the frequency band combination, a frequency band range and user equipment.
The method of any one of claims 31-59, further comprising:

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

The network device receives SRS on at least one first SRS port of the third SRS resource.
A terminal device, comprising:

a communication unit, configured to receive first information sent by a network device, where the first information includes first indication information, where the first indication information is used to indicate 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 (b)

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

At least one first SRS port of at least one third SRS resource in the first SRS resource set is used for SRS transmission; or (b)

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

a communication unit, configured to send first information to a terminal device, where the first information includes first indication information, where the first indication information is used to indicate 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 (b)

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

At least one first SRS port of at least one third SRS resource in the first SRS resource set is used for SRS transmission; or (b)

At least one second SRS port of at least one third SRS resource in the first set of SRS resources is not used for SRS transmission.
A terminal device, comprising: a processor and a memory for storing a computer program, the processor being for invoking and running the computer program stored in the memory, performing the method of any of claims 1 to 30.
A chip, comprising: a processor for calling and running a computer program from a memory, causing a device on which the chip is mounted to perform the method of any one of claims 1 to 30.
A computer readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 1 to 30.
A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 1 to 30.
A computer program, characterized in that the computer program causes a computer to perform the method of any one of claims 1 to 30.
A network device, comprising: a processor and a memory for storing a computer program, the processor being for invoking and running the computer program stored in the memory, performing the method of any of claims 31 to 60.
A chip, comprising: a processor for calling and running a computer program from memory, causing a device on which the chip is mounted to perform the method of any one of claims 31 to 60.
A computer readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 31 to 60.
A computer program product comprising computer program instructions which cause a computer to perform the method of any one of claims 31 to 60.
A computer program, characterized in that the computer program causes a computer to perform the method of any one of claims 31 to 60.