WO2022061733A1

WO2022061733A1 - Wireless communication method and device

Info

Publication number: WO2022061733A1
Application number: PCT/CN2020/117812
Authority: WO
Inventors: 史志华; 田杰娇; 陈文洪
Original assignee: Oppo广东移动通信有限公司
Priority date: 2020-09-25
Filing date: 2020-09-25
Publication date: 2022-03-31
Also published as: CN115804204A

Abstract

Embodiments of the present application provide a wireless communication method and device. The method comprises: receiving first indication information; and determining a target cell group on the basis of the first indication information, wherein aperiodic sounding reference signal (SRS) trigger signaling on a first cell is used for triggering an SRS on an active cell in the target cell group. The aperiodic SRS trigger signaling on the first cell can trigger SRS transmission of a terminal device on the active cell in the target cell group by means of the first indication information, in other words, cross-cell (or cross-carrier) trigger and transmission of the aperiodic SRS in a multi-cell scenario can be achieved.

Description

Wireless communication method and device

technical field

The embodiments of the present application relate to the field of communication, and more particularly, to wireless communication methods and devices.

Background technique

In a New Radio (New Radio, NR) system, the network device can trigger the terminal device to transmit aperiodic SRS through aperiodic SRS trigger signaling.

However, if the aperiodic SRS trigger signaling is sent on the cell X, the aperiodic SRS trigger signaling can only trigger the transmission of the aperiodic SRS on the uplink corresponding to the cell X. However, this triggering method has many limitations for scenarios with multiple cells. For example, a carrier aggregation (Carrier Aggregation, CA) scenario.

Therefore, how to realize the triggered transmission of aperiodic SRS across cells (or across carriers) in a multi-cell scenario is a technical problem that needs to be solved urgently in the art. SUMMARY OF THE INVENTION

The embodiments of the present application provide a wireless communication method and device, which can realize the triggered transmission of aperiodic SRS across cells (or across carriers) in a multi-cell scenario.

In a first aspect, a wireless communication method is provided, including:

receiving first indication information;

The target cell group is determined based on the first indication information, wherein the aperiodic sounding reference signal SRS trigger signaling on the first cell is used to trigger the SRS on the active cell in the target cell group.

In a second aspect, a wireless communication method is provided, including:

Sending first indication information, where the first indication information is used to determine the target cell group, wherein the aperiodic sounding reference signal SRS trigger signaling on the first cell is used to trigger the SRS on the active cell in the target cell group .

In a third aspect, a terminal device is provided for executing the method in the above-mentioned first aspect or each implementation manner thereof. Specifically, the terminal device includes a functional module for executing the method in the first aspect or each implementation manner thereof.

In a fourth aspect, a network device is provided for executing the method in the second aspect or each of its implementations. Specifically, the network device includes a functional module for executing the method in the second aspect or each implementation manner thereof.

In a fifth aspect, a terminal device is provided, including a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory, so as to execute the method in the above-mentioned first aspect or each implementation manner thereof.

In a sixth aspect, a network device is provided, including 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, so as to execute the method in the above-mentioned second aspect or each implementation manner thereof.

In a seventh aspect, a chip is provided for implementing any one of the above-mentioned first aspect to the second aspect or the method in each implementation manner thereof. Specifically, the chip includes: a processor for calling and running a computer program from a memory, so that a device installed with the chip executes any one of the above-mentioned first to second aspects or each of its implementations method in .

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

In a ninth aspect, a computer program product is provided, comprising computer program instructions, the computer program instructions causing a computer to execute the method in any one of the above-mentioned first to second aspects or the 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 in any one of the above-mentioned first to second aspects or the respective implementations thereof.

Based on the above technical solutions, through the first indication information, the aperiodic SRS triggering signaling on the first cell can trigger the SRS transmission of the terminal equipment on the active cell in the target cell group, in other words, the multi-cell target can be realized. Triggered transmission of aperiodic SRS across cells (or across carriers) in scenarios.

In addition, it is avoided to trigger the SRS for each cell only through the aperiodic SRS trigger signaling received by itself, which can not only improve the flexibility of the trigger signaling, but also reduce the resource consumption of the aperiodic SRS trigger signaling (DCI).

Description of drawings

FIG. 1 is an example of a system framework provided by an embodiment of the present application.

FIG. 2 is a schematic interaction diagram of a wireless communication method provided by an embodiment of the present application.

3 to 16 are schematic diagrams of third indication information provided by embodiments of the present application.

FIG. 17 is a schematic block diagram of a terminal device provided by an embodiment of the present application.

FIG. 18 is a schematic block diagram of a network device provided by an embodiment of the present application

FIG. 19 is a schematic block diagram of a communication device provided by an embodiment of the present application.

FIG. 20 is a schematic block diagram of a chip provided by an embodiment of the present application.

detailed description

The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

FIG. 1 is a schematic diagram of an application scenario of an embodiment of the present application.

As shown in FIG. 1 , the communication system 100 may include a terminal device 110 and a network device 120 . The network device 120 may communicate with the terminal device 110 through the air interface. Multi-service transmission is supported between the terminal device 110 and the network device 120 .

It should be understood that the embodiment of the present application only uses the communication system 100 for exemplary description, but the embodiment of the present application is not limited thereto. That is to say, the technical solutions of the embodiments of the present application can be applied to various communication systems, such as: long term evolution (Long Term Evolution, LTE) system, LTE time division duplex (Time Division Duplex, TDD), universal mobile communication system (Universal mobile communication system) Mobile Telecommunication System, UMTS), 5G communication system (also known as New Radio (New Radio, NR) communication system), or future communication systems, etc.

In the communication system 100 shown in FIG. 1 , the network device 120 may be an access network device that communicates with the terminal device 110 . An access network device may provide communication coverage for a particular geographic area, and may communicate with terminal devices 110 (eg, UEs) located within the coverage area.

The network device 120 may be an evolved base station (Evolutional Node B, eNB or eNodeB) in a Long Term Evolution (Long Term Evolution, LTE) system, or a next generation radio access network (Next Generation Radio Access Network, NG RAN) device, Or a base station (gNB) in an NR system, or a wireless controller in a cloud radio access network (Cloud Radio Access Network, CRAN), or the network device 120 can be a relay station, an access point, a vehicle-mounted device, a wearable Devices, hubs, switches, bridges, routers, or network devices in the future evolved Public Land Mobile Network (PLMN).

The terminal device 110 may be any terminal device, which includes, but is not limited to, a terminal device that adopts a wired or wireless connection with the network device 120 or other terminal devices.

For example, the terminal equipment 110 may refer to an access terminal, a user equipment (UE), a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, user agent, or user device. The access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, end devices in 5G networks or end devices in future evolved networks, etc.

The terminal device 110 may be used for device-to-device (Device to Device, D2D) communication.

The wireless communication system 100 may further include a core network device 130 that communicates with the base station, and the core network device 130 may be a 5G core network (5G Core, 5GC) device, for example, an Access and Mobility Management Function (Access and Mobility Management Function). , AMF), another example, authentication server function (Authentication Server Function, AUSF), another example, user plane function (User Plane Function, UPF), another example, session management function (Session Management Function, SMF). Optionally, the core network device 130 may also be an evolved packet core (Evolved Packet Core, EPC) device of an LTE network, for example, a session management function+core network data gateway (Session Management Function+Core Packet Gateway, SMF+PGW- C) Equipment. It should be understood that the SMF+PGW-C can simultaneously implement the functions that the SMF and the PGW-C can implement. In the process of network evolution, the above-mentioned core network equipment may also be called by other names, or a new network entity may be formed by dividing the functions of the core network, which is not limited in this embodiment of the present application.

The various functional units in the communication system 100 may also establish a connection through a next generation network (next generation, NG) interface to implement communication.

For example, the terminal equipment establishes an air interface connection with the access network equipment through the NR interface to transmit user plane data and control plane signaling; the terminal equipment can establish a control plane signaling connection with the AMF through the NG interface 1 (N1 for short); access Network equipment, such as the next generation wireless access base station (gNB), can establish a user plane data connection with the UPF through the NG interface 3 (N3 for short); the access network equipment can establish a control plane signaling with the AMF through the NG interface 2 (N2 for short). connection; UPF can establish a control plane signaling connection with SMF through NG interface 4 (N4 for short); UPF can exchange user plane data with the data network through NG interface 6 (N6 for short); AMF can communicate with SMF through NG interface 11 (N11 for short) The SMF establishes a control plane signaling connection; the SMF can establish a control plane signaling connection with the PCF through the NG interface 7 (N7 for short).

FIG. 1 exemplarily shows one base station, one core network device and two terminal devices. Optionally, the wireless communication system 100 may include multiple base station devices and the coverage area of each base station may include other numbers of terminals equipment, which is not limited in this embodiment of the present application.

It should be understood that, in the embodiments of the present application, a device having a communication function in the network/system can 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 120 and a terminal device 110 with a communication function, and the network device 120 and the terminal device 110 may be the devices described above, which will not be repeated here; The communication device may further include other devices in the communication system 100, such as other network entities such as a network controller and a mobility management entity, which are not limited in this embodiment of the present application.

It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and/or" in this article is only an association relationship to describe the associated objects, indicating that there can be three kinds of relationships, for example, A and/or B, it can mean that A exists alone, A and B exist at the same time, and A and B exist independently B these three cases. In addition, the character "/" in this document generally indicates that the related objects are an "or" relationship.

The embodiment of the present application provides a wireless communication method, which can be used to determine a time slot for sending an SRS.

To facilitate understanding of the embodiments of the present application, the SRS is introduced below.

The Sounding Reference Signal (SRS) signal is an important reference signal in the 5G/NR system and is widely used in various functions in the NR system. For example, the SRS can be used in the following scenarios:

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

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

3. Used for Antenna Switching function;

4. Used for carrier switching (UE sounding procedure between component carriers);

5. Used for positioning function;

6. Cooperate with codebook-based uplink transmission;

7. Cooperate with the uplink transmission based on non-codebook (Non-Codebook based).

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

The transmission of the SRS can be divided into periodic (Periodic), semi-persistent (Semi-persistent), and aperiodic (Aperiodic).

Periodic SRS refers to periodically transmitted SRS, and its period and time slot offset are configured by RRC signaling. Once the terminal device receives the corresponding configuration parameters, it will send SRS according to a certain period until the RRC configuration is invalid. The spatial correlation information (Spatial Relation Info) of the periodic SRS is also configured by RRC signaling. The spatial correlation information may indicate a channel state information reference signal (Channel State Information Reference Signal, CSI-RS), a synchronization signal/physical broadcast channel block (Synchronization Signal/PBCH Block, SSB) or a reference SRS. For example, the transmission beam of the periodic SRS may be indicated in an implicit manner. For example, the terminal device determines the transmission beam of the periodic SRS according to the indicated CSI-RS/SSB. For another example, the terminal device may determine the transmission beam used for transmitting the SRS on the SRS resource through the spatial correlation information of the SRS resource.

The period and slot offset of semi-persistent SRS are configured by RRC signaling, but its activation and deactivation signaling is carried by MAC CE. The terminal device starts to transmit SRS after receiving the activation signaling until it receives the deactivation signaling. The spatially related information (transmission beam) of the semi-persistent SRS is carried along with the MAC CE that activates the SRS.

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

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

are the radio frame and time slot numbers, respectively.

Aperiodic SRS transmission means that the network device can trigger the SRS transmission of the terminal device through DCI. The trigger signaling for triggering aperiodic SRS transmission can be either through the DCI bearer for scheduling PUSCH/PDSCH in the UE-specific search space or the common search space (Common search space), or through the DCI format 2_3 in the common search space. bear.

Wherein, DCI format 2_3 can not only be used to trigger aperiodic SRS transmission, but also can be used to configure a power control command (TPC) command of SRS on a group of UEs or a group of carriers at the same time.

Table 1 SRS trigger signaling

For example, if the value of the SRS request field in the DCI is 11, the trigger signaling of the SRS indicates that the SRS resource group with the higher layer parameter aperiodic SRS resource trigger (aperiodicSRS-ResourceTrigger) set to 3 is used for SRS transmission.

After receiving the aperiodic SRS trigger signaling (eg DCI), the terminal device performs SRS transmission on the aperiodic SRS resource group indicated by the trigger signaling. The time slot offset (slot offset) between the trigger signaling and the SRS transmission may be configured by higher layer signaling (RRC). The network device pre-instructs the terminal device configuration parameters of each SRS resource group through high-level signaling, including time-frequency resources, sequence parameters, power control parameters, and the like. In addition, for each SRS resource in the triggered SRS resource group, the terminal device can also determine the transmission beam used for transmitting the SRS on the resource through the spatial correlation information of the resource, and the spatial correlation information can be configured for each SRS through RRC resource.

In the New Radio (NR) system, in order to support various possible deployment scenarios and various new service types in the future, the system design is very flexible. For example, the uplink and downlink resources can be transmitted through high-level signaling and physical layer signaling. to indicate and adjust. Therefore, some symbols in a slot or a slot may be used for transmission in different directions at different times, for example, a certain time can be used for uplink transmission, and a certain time can be used for downlink transmission.

However, as mentioned above, for the aperiodic sounding reference signal (Sounding Reference Signal, SRS), its slot offset (slot offset) can be configured by high-level signaling, which is equivalent to before the RRC signaling reconfigures other values. , the time slot offset between each trigger signaling and SRS transmission is constant, resulting in a fixed relative position between the time slot used to receive the trigger signaling and the time slot used to send the SRS, which increases the restriction and Reduced system flexibility.

For example, assuming that the time slot offset is k, if the SRS is to be triggered to transmit on slot n+k, the corresponding trigger signaling can only be sent on slot n, which limits the timing of sending trigger signaling, and gives the network device The scheduling of jobs adds additional unnecessary constraints.

For another example, when a certain slot, or some symbols on a certain slot are dynamically changed from uplink transmission to downlink transmission, a certain aperiodic SRS may not be transmitted. For example, if slot n+k is changed to be used for downlink transmission, the trigger SRS signaling sent on slot n is invalid, or the trigger signaling cannot be sent on slot n.

In some embodiments of the present application, if the network device sends SRS trigger signaling on slot n, the terminal device can transmit SRS on slot n+k or the first valid slot after that. By transmitting SRS on slot n+k or the first effective slot after that, although the success rate of transmitting SRS can be improved, the efficiency is not high, and the configuration and scheduling complexity of network equipment will be increased. The main reason is that the effective slot is not It is fixed and needs to be determined according to related configurations or factors (eg, uplink and downlink time slot configuration and/or indication).

Further, an embodiment of the present application provides a wireless communication method.

It should be noted that, in this embodiment of the present application, a time slot that can or can be used to transmit an SRS is referred to as a valid time slot (valid slot).

FIG. 2 shows a schematic flowchart of a wireless communication method 200 according to an embodiment of the present application, and the method 200 may be executed interactively by a terminal device and a network device. The terminal device shown in FIG. 2 may be the terminal device shown in FIG. 1 , and the network device shown in FIG. 2 may be the access network device shown in FIG. 1 .

As shown in FIG. 2, the method 200 may include:

S210, receiving first indication information;

S220. Determine a target cell set (Cell Set) based on the first indication information, where the aperiodic sounding reference signal SRS trigger signaling on the first cell is used to trigger SRS on active cells in the target cell set.

For example, the terminal device determines a target cell group in at least one cell group according to the first indication information.

Through the first indication information, the aperiodic SRS triggering signaling on the first cell can trigger the SRS transmission of the terminal equipment on the active cell in the target cell group. Triggered transmission of aperiodic SRS (or across carriers) or multi-cell (or multi-carrier).

In some embodiments of the present application, the first indication information indicates the target cell group through a first trigger state in the aperiodic SRS trigger signaling.

In some embodiments of the present application, the aperiodic sounding reference signal SRS trigger signaling may be transmitted through one of downlink control information DCI format 0_1, or DCI format 0_2, DCI format 1_1, or DCI format 1_2, or, also Can be transmitted by doing DCI format 2_3.

For example, different trigger states may correspond to different cell groups.

In other words, the target cell group is a cell group corresponding to the first trigger state.

Optionally, the first trigger state may be a non-zero trigger state.

Optionally, for the specific category of the first trigger state, reference may be made to the trigger states shown in Table 1.

In some embodiments of the present application, the first indication information and the aperiodic SRS trigger signaling are located in the same signaling, and the first indication information indicates the target cell group.

In other words, the first indication information and the aperiodic SRS trigger signaling may be sent to the terminal device as one signaling or carried in the same signaling.

In some embodiments of the present application, the value of the uplink shared channel UL-SCH indication in the same signaling is 0, and the first field includes part or all of the bits of at least one of the following fields;

Carrier indicator field;

BWP indicator (Bandwidth part indicator) field;

Frequency domain resource assignment (Frequency domain resource assignment) domain;

Time domain resource assignment domain;

Modulation and coding scheme field;

Redundancy version field;

Hybrid Automatic Repeat Request (HARQ) process number field;

The transmit power control TPC command (TPC command for scheduled PUSCH) field for a predetermined PUSCH;

SRS resource indicator (SRS resource indicator) field;

Precoding information and number of layers fields; or

Antenna ports field.

For example, the number of bits in the carrier indication field may be 3, which is equivalent to that the target cell group may be a cell group among 8 cell groups at most, which is a good compromise between complexity and flexibility. The number of bits in the time domain resource allocation domain may be larger, which is equivalent to indicating the target cell group more flexibly. The number of bits in the frequency domain resource allocation domain may be larger, which is equivalent to indicating the target cell group more flexibly. The number of bits in the modulation and coding scheme field is fixed, and the maximum supported group is also fixed, which can reduce terminal and network complexity. The number of bits in the HARQ process ID field is fixed, and the maximum supported group is also fixed, which can reduce terminal and network complexity. The number of bits used in the transmission power control TPC command field of the predetermined PUSCH is fixed, and the maximum supported group is also fixed, which can reduce the complexity of the terminal and the network. The number of bits in the SRS resource indication field may be larger, which is equivalent to indicating the target cell group more flexibly. The number of bits in the precoding information and layer number fields may be larger, which is equivalent to indicating the target cell group more flexibly. The number of bits in the antenna port type field may be larger, which is equivalent to indicating the target cell group more flexibly.

In addition, part or all of the bits in the first field are used to carry the first indication information, which is equivalent to multiplexing the bits of the first field to carry the first indication information, which can reduce signaling overhead.

In some embodiments of the present application, the same signaling is downlink control information DCI format 0_1 or DCI format 0_2.

In some embodiments of the present application, the first domain is a domain dedicated to the first indication information.

In other words, the bits in the first field are exclusively used to carry the first indication information.

In some embodiments of the present application, the same signaling is downlink control information DCI format 0_1, or DCI format 0_2, DCI format 1_1, or DCI format 1_2.

In some embodiments of the present application, whether the first domain exists is determined through the first RRC signaling.

For example, the terminal device determines whether the first domain exists in the terminal device through the first RRC signaling. For example, in the presence of the first domain, the terminal device may acquire the first indication information in the first domain. For example, in the case where the first domain does not exist, the terminal device may determine the target cell group through the trigger state in the aperiodic SRS trigger signaling.

In some embodiments of the present application, the method 200 may further include:

Second indication information is received, where the second indication information is used to determine whether to trigger the SRS on the cell based on the cell group.

For example, the terminal device receives the second indication information sent by the network device to determine the manner in which the terminal device triggers the SRS. For example, the second indication information is used to instruct the terminal device to activate the function of triggering the SRS on the cell based on the cell group.

For example, the second indication information is carried by the second RRC signaling. In some embodiments of the present application, the method 200 may further include:

Sending capability information, where the capability information is used to indicate that the terminal device has the capability of triggering an SRS on a cell based on a cell group.

For example, the terminal device sends the capability information to the network device to indicate that the terminal device supports a function of triggering an SRS on a cell based on a cell group.

It should be noted that the triggering of the SRS on the cell based on the cell group involved in this application means that the same aperiodic SRS triggering signaling can trigger the SRS transmission on all cells in the corresponding cell group, or can trigger the SRS transmission on all cells in the corresponding cell group. SRS transmission on all active cells. For example, the second indication information may be used to instruct the terminal device to activate the same aperiodic SRS trigger signaling to trigger the triggering method of SRS transmission on all cells in the corresponding cell group, or the second indication information may be used to indicate A triggering method in which the terminal device activates the same aperiodic SRS trigger signaling to trigger SRS transmission on all active cells in the corresponding cell group. Similarly, the capability information can be used to indicate whether the terminal device has the capability of triggering SRS transmission on all cells in the corresponding cell group by the same aperiodic SRS trigger signaling, or the capability information can be used to indicate whether the terminal device has the same aperiodic SRS trigger signaling capability to trigger SRS transmission on all cells in the corresponding cell group. An aperiodic SRS trigger signaling can trigger the capability of SRS transmission on all active cells in the corresponding cell group.

Third indication information is received, where the third indication information is used to indicate at least one cell group, and the at least one cell group includes the target cell group.

For example, the terminal device receives the third indication information sent by the network device, so that the terminal device determines the target cell group in the at least one cell group after receiving the first indication information.

For example, the terminal device determines a target cell group in the at least one cell group according to the first indication information.

In some embodiments of the present application, the at least one cell group corresponds to the first cell or a first bandwidth part BWP of the first cell, wherein all the cells on the first cell or the first BWP The aperiodic SRS trigger signaling triggers the SRS on the cell based on the first cell or a cell group in the at least one cell group corresponding to the first BWP.

In other words, the third indication information is configured for the first cell or the first BWP, and the third indication information indicates the at least one cell group. Equivalently, for different cells, or for different BWPs of a cell, at least one cell group configured therein may be different. Thereby, the flexibility of configuration can be improved, thereby improving the optimization performance of the network device.

In some embodiments of the present application, the at least one cell group corresponds to at least one trigger state, and the at least one trigger state includes a first trigger state in the aperiodic SRS trigger signaling, wherein the first cell Or the aperiodic SRS trigger signaling on the first BWP triggers the SRS on the cell based on the cell group in the at least one cell group corresponding to the first trigger state.

In other words, the third indication information is configured for a trigger state, and the third indication information indicates the at least one cell group. For example, different trigger states may correspond to different cell groups. Equivalently, two different trigger states may trigger aperiodic SRS transmission on cells in different cell groups. For example, the trigger state corresponding to a certain cell group in the at least one cell group may be the first trigger state in the aperiodic SRS trigger signaling. For example, trigger state 1 may correspond to aperiodic SRS transmission on cell 0 and cell 1, that is, trigger state 1 may be used to trigger aperiodic SRS transmission on active cells in cell 0 and cell 1. For another example, trigger state 2 may correspond to aperiodic SRS transmission on cell 0, cell 1 and cell 3, that is, trigger state 2 may be used to trigger aperiodic SRS transmission on active cells in cell 0, cell 1 and cell 3.

For example, the third indication information involved in this embodiment of the present application may be configured for a terminal device. In other words, the third indication information is configured for the trigger state of the terminal device. That is, the correspondence between at least one trigger state indicated by the third indication information and at least one cell group is applicable to each cell of the terminal device, or to each BWP of each cell of the terminal device.

For example, the third indication information involved in this embodiment of the present application may be configured for a first cell group (Cell group) of the terminal device. In other words, the third indication information is configured for a trigger state on a first cell group of the terminal device. That is, the correspondence between at least one trigger state indicated by the third indication information and at least one cell group is applicable to each cell of the one first cell group, or to each BWP of each cell of the one first cell group.

It should be noted that the first cell group may refer to a cell group under a dual connection (Dual Connection, DC). For example, a master cell group (MCG, Master Cell group), or a secondary cell group (SCG, Secondary Cell group). However, both a cell group and a target cell group in the at least one cell group involved in this application may be understood as a cell group formed by one or more cells that can be triggered by an aperiodic SRS trigger signaling.

For example, the third indication information involved in this embodiment of the present application may be configured for one cell of the terminal device. In other words, the third indication information is configured for the trigger state on one cell of the terminal device. That is, the correspondence between at least one trigger state indicated by the third indication information and at least one cell group is applicable to the one cell, or applicable to each BWP of the one cell.

For example, the third indication information involved in this embodiment of the present application may be configured for one BWP of one cell of the terminal device. In other words, the third indication information is configured for the trigger state on one BWP of one cell of the terminal device. That is, the correspondence between at least one trigger state indicated by the third indication information and at least one cell group is applicable to the one BWP of the one cell.

In some embodiments of the present application, the first trigger state is a non-zero trigger state.

In some embodiments of the present application, the at least one cell group corresponds to a terminal device or a first cell group of the terminal device, wherein the first cell of the terminal device or a cell in the first cell group The aperiodic SRS trigger signaling on the first cell triggers the SRS on the cell based on the terminal device or a cell group in the at least one cell group corresponding to the first cell group.

In other words, the third indication information is configured for the terminal device or a cell group including the first cell, and the third indication information indicates the at least one cell group. Equivalently, for different cells or different cells in the same cell group, the configured at least one cell group may be the same. Therefore, the network device and the terminal device are simple to implement and process, and the implementation complexity can be reduced.

In some embodiments of the present application, the third indication information is carried by third RRC signaling.

Optionally, some or all of the above-mentioned first RRC signaling, the above-mentioned second RRC signaling, and the above-mentioned third RRC signaling are carried in the same signaling.

Optionally, some or all of the above-mentioned first RRC signaling, the above-mentioned second RRC signaling, and the above-mentioned third RRC signaling are the same RRC signaling.

In some embodiments of the present application, the third RRC signaling is configured by at least one of the following:

SRS configuration SRS-Config;

Serving cell configuration ServingCellConfig;

Special cell configuration SpCellConfig;

Secondary cell configuration SCellConfig;

Serving cell shared configuration ServingCellConfigCommon;

Uplink configuration UplinkConfig;

Bandwidth Part Uplink BWP-Uplink;

The bandwidth part shares the uplink BWP-UplinkCommon;

Bandwidth Part Dedicated Uplink BWP-UplinkDedicated; or

Cell group CellGroupConfig.

In some embodiments of the present application, the third RRC signaling indicates the at least one cell group through a bitmap or a cell identifier.

For example, it can be configured by a value in the "BIT STRING(SIZE(T))" format, where T in SIZE(T) is a positive integer, indicating how many bits in total. Of course, the names and positions are only examples of the present application, which are not specifically limited in the present application.

It should be understood that the cell identifier involved in this application may also be referred to as a cell number, which is not specifically limited in this application.

In some embodiments of the present application, the third indication information is carried by medium access control control element MAC CE signaling.

In some embodiments of the present application, the MAC CE signaling indicates the at least one cell group through a bitmap.

For example, the MAC CE signaling includes at least one bit group, one bit group in the at least one bit group corresponds to one cell group in the at least one cell group, and a bit on one bit in the one bit group The value is used to indicate whether the cell corresponding to the one bit belongs to the cell group corresponding to the one bit group.

For another example, the MAC CE signaling also includes at least one of the following:

the identifier of the first cell;

the identifier of the first bandwidth part BWP of the first cell;

first information for indicating the number of the at least one cell group; or

reserved bits.

Below with reference to Fig. 3 to Fig. 7, the solution that the MAC CE signaling indicates the at least one cell group through a bitmap is exemplarily described.

As shown in FIG. 3 , the MAC CE signaling may include a serving cell ID (Serving Cell ID) and a bitmap of T cell groups, wherein the length of the bitmap for each cell group in the MAC CE signaling is 8. That is, the bitmap for each cell group in the MAC CE signaling is C ₀ to C ₇ . If the number of cells configured by the terminal is less than 8, some bits in the bitmap are inactive, or the terminal may ignore some bits in the bitmap, or some bits in the bitmap may be reserved bits. In other words, if the number of bits available for the bitmap in the aforementioned MAC CE signaling is X, and the actual maximum value of ServCellIndex is less than X, then some of the X bits can be used as reserved bits. Optionally, the reserved bits may not be used for practical purposes. In other words, the X bits may include the reserved bits other than the bitmap for indicating the first cell group. The reserved bits may also be referred to as remaining bits. It should be understood that similar processes in other embodiments are not repeated to avoid repetition.

The serving cell identity may be the identity of the first cell described above.

In other words, the serving cell identity can be used to indicate which cell the MAC CE described above is used for (indicates the identity of the Serving Cell for which the MAC CE applies). For example, the serving cell identifier may occupy 5 bits.

For example, C ₀ to C ₇ are respectively the bits corresponding to the identifiers of the cells in each of the above-mentioned at least one cell group.

In other words, C ₀ to C ₇ respectively correspond to 8 cells. For example, C _i in C ₀ to C ₇ corresponds to a cell whose serving cell index (ServCellIndex) is i. If the value of C _i is 1, it means that the cell whose ServCellIndex is i belongs to the corresponding cell group; if the value of C _i is 1 If it is 0, it means that the cell whose ServCellIndex is i does not belong to the corresponding cell group. Of course, in other alternative embodiments, if the value of C _i is 0, it means that the cell whose ServCellIndex is i belongs to the corresponding cell group; if the value of C _i is 1, it means that the cell whose ServCellIndex is i does not belong to the corresponding cell group. community group.

It should be noted that this application does not limit the specific use of bits that are not marked or described. For example, it can be used for indication or reserved bit.

For example, a bit that is not marked or described may be R, where R represents a reserved bit (reserved bit), for example, its value may be 0.

It should be understood that FIG. 3 is only an example of the present application, and should not be construed as a limitation of the present application.

The modified structure of FIG. 3 will be schematically described below with reference to FIGS. 4 to 7 .

As shown in Figure 4, the MAC CE signaling may also include X2, X1, and X0.

Wherein, some or all of the bits in X2, X1, and X0 are used to indicate the number T of cell groups.

In other words, some or all of the bits in X2, X1, and X0 may be used to carry the above-mentioned first information.

As shown in FIG. 5 , the MAC CE signaling may also include a bandwidth part identifier (Bandwidth Part ID, BWP ID). For example, if the at least one cell group is configured for the first BWP on the first cell, the MAC CE signaling may include the BWP ID.

The BWP ID may be the identifier of the first BWP described above, that is, the identifier of the first BWP on the first cell.

In other words, the BWP ID can be used to indicate which BWP this MAC CE applies to (indicates a DL BWP for which the MAC CE applies). For example, the BWP ID may occupy 2 bits.

As shown in Figure 6, the length of the bitmap for each cell group in the MAC CE signaling is 24.

That is, the bitmap for each cell group in the MAC CE signaling is C ₀ to C ₂₃ .

As shown in Figure 7, the length of the bitmap for each cell group in the MAC CE signaling is 32.

That is, the bitmap for each cell group in the MAC CE signaling is C ₀ to C ₃₁ .

It should be understood that FIG. 3 to FIG. 7 are only examples of the present application, and should not be construed as limiting the present application.

For example, in other alternative embodiments, the bitmap for each cell group in the MAC CE signaling can be changed from the left-to-right arrangement order to the right-to-left arrangement order. In other words, as long as the terminal device and the network device have a consistent understanding of the arrangement order of the cells in each cell group, the present application does not specifically limit the arrangement order of the cells in each cell group.

For another example, in other alternative embodiments, the MAC CE signaling may also include other information. For another example, in other alternative embodiments, the position of each piece of information in the MAC CE signaling can be changed, for example, R can be placed at the end of the first line, or can be placed in front of the first line.

In addition, the format of the MAC CE signaling may be determined based on the maximum value of the serving cell index (ServCellIndex) configured by the terminal device.

For example, the network device may determine or switch the length of the at least one bit through RRC signaling, that is, determine or switch the format of the MAC CE signaling. For example, if the maximum value of ServCellIndex configured by the terminal device is less than 8, a MAC CE with a bitmap length of 8 bits can be used; if the maximum value of ServCellIndex configured by the terminal device is greater than or equal to 8 and less than 16, the bitmap can be used The length of the picture is the MAC CE of 16 bits; if the maximum value of the ServCellIndex configured by the terminal device is greater than or equal to 16 and less than 24, the MAC CE with the length of the bitmap of 24 bits can be used; if the maximum value of the ServCellIndex configured by the terminal device is If the value is greater than or equal to 24, the MAC CE with a length of 32 bits of the bitmap can be used.

Of course, the division granularity of the length of the bitmap can also be greater than 8.

For example, if the maximum value of ServCellIndex configured by the terminal device is greater than or equal to 8 and less than 32, a MAC CE with a bitmap length of 16 bits or 32 bits can be used.

In some embodiments of the present application, the MAC CE signaling indicates the at least one cell group through a cell identity.

For example, the MAC CE signaling includes an identity of a cell in each of the at least one cell group.

the identifier of the first cell;

the identifier of the first bandwidth part BWP of the first cell;

first information, used to indicate the number of the at least one cell group;

second information, one of the second information is used to indicate the number of cells in each cell group in the at least one cell group, or one of the second information is used to indicate the number of cells in a cell group;

third information, one piece of third information is used to indicate a cell group to which a cell indicated by a cell identifier belongs; or

reserved bits.

In some embodiments of the present application, the number of the at least one cell group is predefined, or the number of the at least one cell group is indicated by the network device, or the number of the at least one cell group is determined by the terminal device according to the The configuration information sent by the network device is determined.

8 to 10, the solution for the MAC CE signaling of the bearer cell identity provided by the embodiment of the present application is exemplarily described.

As shown in FIG. 8 , the MAC CE signaling may include serving cell IDs (Serving Cell IDs) 0 to K, and X2, X1, X0 or X2 corresponding to each of the serving cell IDs 1 to K, and X2, X1, X0 or X2, Some bits in X1, X0.

The serving cell identifier 0 represents the identifier of the first cell described above.

In other words, serving cell identity 0 may be used to indicate which cell the MAC CE signaling described above is used for (indicates the identity of the Serving Cell for which the MAC CE applies). For example, the serving cell identifier 0 may occupy 5 bits.

The serving cell identifiers 1 to K represent the identifiers of the cells in the second cell group described above.

In other words, for the serving cell identifier i (i>=1) in the serving cell identifiers 1 to K, the serving cell identifier i may be used to indicate a serving cell index i (ServCellIndex i). For example, the serving cell identifier i may occupy 5 bits.

Wherein, some or all of the bits in the X2, X1, and X0 are used to indicate the cell group to which the cell indicated by the corresponding serving cell identifier belongs. In other words, some or all of the bits in the X2, X1, and X0 may be used to carry the third information described above.

It should be understood that FIG. 13 is only an example of the present application, and should not be construed as a limitation of the present application.

The modified structure of FIG. 13 will be exemplarily described below with reference to FIGS. 14 to 17 .

As shown in FIG. 9 , X2, X1, and X0 corresponding to each of the serving cell identifiers 1 to K may be replaced with _{X1_2} , _{X1_1} , _{X1_0} to _{XT_2} , _{XT_1} , and _{XT_0} ; All or part of the _bits in X _{1_2} , X _{1_1} , X _{1_0} to X _{T_2} , X _{T_1} , X _{i_1} , X _{i_0} _are used to indicate the i-th cell group (1<=i<=T ) contains how many cells.

In other words, the X _{1_2} , X _{1_1} , X _{1_0} _{˜XT_2} , X _{T_1} , and X _{T_0} may be used to carry the above-mentioned second information.

In other words, the third information in the MAC CE signaling can be replaced with the second information.

As shown in FIG. ₁₀ , X2, X1, _X0 corresponding to each serving cell identifier in the serving cell identifiers ₁ to K can be replaced with the X5, _X4 , _X3 , X2, X1, _X0 , some or all of the bits in the X ₅ , X ₄ , X ₃ , X ₂ , X ₁ , and X ₀ are used for indicating pairs to indicate how many cells each cell group contains.

In other words, when the number of cells in different cell groups in the at least one cell group is different, the number of cells included in one cell group in the at least one cell group may be indicated by one piece of the second information. That is, at least one of the second pieces of information respectively indicates the number of cells in the at least one cell group. When the number of cells in different cell groups in the at least one cell group is the same, the number of cells included in each cell group in the at least one cell group may be indicated by one piece of the second information. By using one piece of the second information, the number of bits to be interpreted by the terminal device can be reduced, the complexity of the terminal device can be reduced, and the flexibility can be improved.

It should also be understood that the MAC CE signaling shown in FIG. 3 to FIG. 10 includes the identifier of the first cell described above, and the third indication information is configured for a terminal device or a cell group including the first cell In this case, the MAC CE signaling may not include the identity of the first cell or the identity of the first BWP, and of course, the identity of the first cell and the identity of the first BWP may not be included at the same time. logo.

For example, as shown in FIG. 11 , the MAC CE signaling only includes bitmaps C ₀ to C ₇ for each cell group.

Of course, as shown in FIG. 12 , the MAC CE signaling only includes bitmaps C ₀ to C ₂₃ for each cell group.

For another example, as shown in FIG. 13 , the MAC CE signaling only includes bitmaps C ₀ to C ₃₁ for each cell group.

For another example, as shown in FIG. 14 , the MAC CE signaling only includes serving cell identifiers 1 to K, and X2, X1, and X0 corresponding to each serving cell identifier in the serving cell identifiers 1 to K.

For another example, as shown in FIG. 15 , the MAC CE signaling only includes serving cell identifiers 1 to K, and X _{1_2} , X _{1_1} , X _{1_0} to X _{T_2} , X _{T_1} , X _{T_0} ; the X _{1_2} , X _{1_1} , X _{1_0} to X _{T_2} , X _{T_1} , X _{i_2} , X _{i_1} , and all or part of bits in X _{i_0} in X _{T_0} are used to indicate how many cells the i-th cell group (1<=i<=T) contains.

For another example, as shown in FIG. 16 , the MAC CE signaling only includes serving cell identifiers 1 to K, and X ₅ , X ₄ , X ₃ , X ₂ , X ₁ , X ₀ , the X ₅ , X ₄ Part or all of the bits in , X ₃ , X ₂ , X ₁ , and X ₀ are used for indicating pairs to indicate how many cells each cell group contains.

Of course, FIGS. 11 to 16 are only examples, and should not be construed as limiting the present application.

In some embodiments of the present application, the maximum number of cells in each cell group in the at least one cell group is 2, 4, 8 or 32.

Fourth RRC signaling is received, where the fourth RRC signaling is used to configure at least one cell, where the at least one cell includes the first cell and cells in the target cell group.

For example, the terminal device receives the fourth RRC signaling sent by the network device.

In other words, the network device sends the fourth RRC signaling to the terminal device to configure the cells in the first cell and the target cell group.

It should be noted that, for SRS, transmission needs to be performed based on an SRS resource group (SRS-ResourceSet) or an SRS resource (SRS-Resource). In other words, the SRS sent by the terminal device may be an SRS resource group or an SRS corresponding to an SRS resource. The slot offset of the SRS corresponding to the SRS resource group is configured for the SRS resource group, and the slot offset corresponding to the SRS resource is configured for the SRS resource. The SRS corresponding to the SRS resource group introduced above may also be referred to as a common SRS. Optionally, the usage field in the SRS resource group may be configured as one of beam management (beamManagement), codebook (codebook), non-codebook (nonCodebook), and antenna switching (antennaSwitching). The SRS corresponding to the SRS resource may also be an SRS used for positioning, which is configured through RRC signaling SRS-PosResource-r16, and the corresponding SRS resource group is configured through RRC signaling SRS-PosResourceSet-r16. In order to simplify the description later, only ordinary SRS is used as an example for introduction in some places, but the solution is also applicable to positioning SRS.

In some embodiments of the present application, the SRS resource groups of the different cells are configured through different SRS resource group SRS-ResourceSet signaling, and the SRS resources in the different SRS resource groups in the SRS resource group are configured through different SRS resources SRS -Resource signaling configuration.

It should be noted that the SRS resource groups involved in the various embodiments of the present application are all aperiodic SRS resource groups, and the SRS resources are all aperiodic SRS resources.

In some embodiments of the present application, the SRS-ResourceSet signaling or the SRS-Resource signaling is configured through the SRS configuration SRS-Config.

In some embodiments of the present application, for multiple trigger states corresponding to the SRS resource group of the first cell and the SRS resource group of the cells in the target cell group, the SRS resource group information element SRS-ResourceSet IE The aperiodic SRS resource triggers aperiodicSRS-ResourceTrigger and/or the aperiodicSRS resource trigger list aperiodicSRS-ResourceTriggerList configuration, the aperiodicSRS-ResourceTrigger is used to configure one of the multiple non-zero trigger states, the aperiodicSRS-ResourceTriggerList for configuring one or more than one trigger state of the plurality of non-zero trigger states.

For example, the value of the aperiodicSRS-ResourceTrigger is an integer from 1 to N-1, where N represents the number of aperiodic SRS trigger states; the value of each element in the aperiodicSRS-ResourceTriggerLis is from 1 to N-1 the integer.

For example, the N is greater than or equal to 4; if N is greater than 4, the N is indicated by the network device to the terminal device, or the N is determined based on the capability of the terminal device to report to the network device.

In some embodiments of the present application, the SRS resource group of each cell in the target cell group is configured with at least one time slot offset; the method 200 may further include:

The second time slot is determined based on the first time slot and the time slot offset k corresponding to the SRS resource group of one cell in the target cell group, and the first time slot is where the aperiodic SRS trigger signaling is located The SRS resource group of the one cell is the SRS resource group corresponding to the first value, and the first value is the value of the trigger state in the aperiodic SRS trigger signaling;

On the second time slot of the one cell, the SRS corresponding to the SRS resource group of the one cell is sent.

For example, the SRS resource group of the one cell is configured with multiple timeslot offsets, and the timeslot offset k corresponding to the SRS resource group of the one cell is an activated timeslot offset among the multiple timeslot offsets shift.

For another example, the SRS resource group of the one cell is configured with a slot offset, and the one slot offset is the slot offset k.

For another example, the second time slot is an effective time slot after the first time slot, and the effective time slot is a time slot that can be used to transmit SRS.

In some embodiments of the present application, the SRS resource groups of different cells are configured through different SRS-Pos resource groups version 16 SRS-PosResourceSet-r16 signaling, and the SRS resources of different SRS resource groups in the SRS resource groups are configured through different SRS-Pos resource groups. SRS Pos Resource Version 16 SRS-PosResource-r16 signaling configuration.

In some embodiments of the present application, the SRS-PosResourceSet-r16 signaling and the SRS-PosResource-r16 are configured through the SRS configuration SRS-Config.

In some embodiments of the present application, for the multiple trigger states corresponding to the SRS resource group of the first cell and the SRS resource group of the cells in the target cell group, the SRS-PosResourceSet-r16 in the Periodic SRS Resource Trigger List Version 16 aperiodicSRS-ResourceTriggerList-r16 configuration.

For example, the value of each element in the aperiodicSRS-ResourceTriggerLis is an integer from 1 to N-1; the N represents the number of aperiodic SRS trigger states.

In some embodiments of the present application, the SRS resources in the SRS resource group of each cell in the target cell group are configured with at least one time slot offset; the method 200 may further include:

A third time slot is determined based on the first time slot and the time slot offset k' corresponding to the SRS resource in the SRS resource group of one cell in the target cell group, and the first time slot is the aperiodic SRS trigger The time slot where the signaling is located, the SRS resource group of the one cell is the SRS resource group corresponding to the first value, and the first value is the value of the trigger state in the aperiodic SRS trigger signaling;

On the third time slot of the one cell, the SRS corresponding to the SRS resource in the SRS resource group of the one cell is sent.

For example, the SRS resource group of the one cell is configured with multiple timeslot offsets, and the timeslot offset k' corresponding to the SRS resources in the SRS resource group of the one cell is the number of timeslot offsets already in the multiple timeslot offsets. Active slot offset.

For another example, the SRS resource group of the one cell is configured with a slot offset, and the one slot offset is the slot offset k'.

For another example, the third time slot is an effective time slot after the first time slot, and the effective time slot is a time slot that can be used to transmit SRS.

It should be noted that, the valid time slot may also be understood as a time slot available for uplink transmission. The time slot that can be used for uplink transmission can be understood as a time slot only used for uplink transmission, that is, it is always used for uplink transmission, it can also be understood as a time slot containing an uplink symbol (uplink symbol), and it can also be understood as a time slot containing flexible symbols. The time slot of (flexible symbol) can also be understood as a flexible time slot (flexible slot), and it can also be understood as a time slot that is occasionally unavailable for uplink transmission, for example, a time slot that is occasionally used for downlink transmission. Optionally, whether the time slot that can be used for uplink transmission in this application can actually be used for uplink transmission depends on whether it collides with other signal transmissions.

The technical solution of the method 200 will be described below with reference to specific embodiments. It should be noted that, in the following embodiments, the steps are mainly used to describe relatively related function points. In actual implementation, some steps may be omitted, or the relative order of different steps may be changed, or the relative order of different sub-processes in different steps may be Changes are not limited here. Optionally, in subsequent embodiments, the SRS resource group refers to an aperiodic SRS resource group; the SRS resource refers to an aperiodic SRS resource.

Example 1:

In this embodiment, the third indication information is configured for the first cell or the first BWP.

step 1:

The terminal device receives the cell configuration information sent by the network device through RRC signaling.

For example, cell aggregation (Carrier Aggregation, CA) configuration information. A cells are configured therein. For each cell in one or more of the A cells (denoted as B, B<=A) (in some cases, some cells may not be configured with the corresponding aperiodic SRS, so it is written as one of A or more), the network device carries the SRS configuration information through RRC signaling, and configures one or more SRS resource groups, and each SRS resource group includes one or more SRS resources. The following description is for a certain cell in the B cells, and the configurations on different cells may be independent. The following description takes the cell Z as an example.

Optionally, the SRS resource group on cell Z is configured through RRC signaling SRS-ResourceSet, and the SRS resources are configured through RRC signaling SRS-Resource.

Optionally, the usage field in the SRS-ResourceSet signaling may be configured as one of beam management (beamManagement), codebook (codebook), non-codebook (nonCodebook), and antenna switching (antennaSwitching).

Optionally, the SRS resource group on the cell Z is configured with multiple (denoted as M, M>=1) trigger states. Optionally, each trigger state corresponds to a value of the SRS request field in the aperiodic SRS trigger signaling, that is, a code point. For example, the value of the trigger state in Table 1.

Optionally, the above multiple trigger states are configured by aperiodicSRS-ResourceTrigger and/or aperiodicSRS-ResourceTriggerList in the SRS-ResourceSet IE, wherein aperiodicSRS-ResourceTrigger is configured with one value, and aperiodicSRS-ResourceTriggerList is configured with one or more values.

Optionally, aperiodicSRS-ResourceTrigger is an integer ranging from 1 to N-1.

Optionally, the value of each element in aperiodicSRS-ResourceTriggerLis is an integer ranging from 1 to N-1.

For example, N may be equal to the number of aperiodic SRS trigger states (maxNrofSRS-TriggerStates), which is 4.

For another example, the value of N is determined to be 4 or greater (eg, 8 or 16) according to the configuration information sent by the network device; of course, in other alternative embodiments, other names may be used. By increasing the number of states corresponding to aperiodic SRS trigger signaling, the flexibility of DCI triggering aperiodic SRS can be improved, and system performance can be improved, thereby enabling cross-cell triggering of aperiodic SRS, reducing DCI overhead, and increasing system flexibility. Optionally, the configuration information indicates the terminal equipment through RRC signaling or MAC CE signaling. Optionally, the terminal device informs the network device through the terminal device capability reporting information that it can support more aperiodic SRS trigger states (Maximum number of SRS trigger states), that is, N is greater than 4, so that the network device can determine N based on the capability reported by the terminal device. .

Optionally, the RRC signaling is configured through SRS-Config.

Step 2:

For the cell Z, or the BWP Y of the cell Z, the network device indicates the T group of cells through the third indication information. Each group of cells contains one or more cells, where T>=1. The aperiodic SRS trigger signaling indicated by the first indication information to be transmitted on the cell Z or the BWP Y of the cell Z can trigger the SRS on some or all cells in the T group of cells, or can trigger the SRS in the T group of cells. SRS on some or all cells in a group.

Optionally, when the network device does not indicate relevant information through the above signaling, the aperiodic SRS trigger signaling sent on the cell Z or the BWP Y of the cell Z only triggers the SRS sent on the uplink corresponding to the cell Z. Equivalently, when the terminal device does not receive the first indication information, the original triggering method is used.

Optionally, before the terminal device receives the first indication information, it may be determined by the second indication information that the terminal device triggers the SRS on the cell based on the cell group.

Optionally, before the terminal device receives the first indication information, the capability information may be used to indicate that the terminal device has the capability of triggering the SRS on the cell based on the cell group.

Optionally, each of the T cell groups indicates one or more cells through a bitmap. For example, if the corresponding bit is a specified value (for example, 1), the cell corresponding to this bit belongs to the group of cells. When the number of cells in the group is large, the bitmap method can reduce signaling overhead or resource overhead.

Optionally, each cell group in the at least one group of cells indicated by the third indication information includes at most 32, or 8, or 4, or 2 cells.

Optionally, each of the T cell groups indicates one or more cells by a cell number, that is, the information corresponding to each group includes the identifiers of the one or more cells. When the number of cells in the group is small, can reduce signaling overhead.

Optionally, each cell group in the at least one group of cells indicated by the third indication information indicates a maximum of 32, or 8, or 4, or 2 cells.

Optionally, the number T of cell groups is determined according to network RRC signaling.

Optionally, the number T of the cell groups is pre-specified (specified by the protocol).

Optionally, the third indication information may be transmitted through third RRC signaling.

Optionally, the third RRC signaling may be configured in any of the following manners:

The third RRC signaling is configured through SRS-Config;

The third RRC signaling is configured through ServingCellConfig;

The third RRC signaling is configured through SpCellConfig;

The third RRC signaling is configured through SCellConfig;

The third RRC signaling is configured through ServingCellConfigCommon;

The third RRC signaling is configured through UplinkConfig;

The third RRC signaling is configured through BWP-Uplink;

The third RRC signaling is configured through BWP-UplinkCommon; or

The third RRC signaling is configured through BWP-UplinkDedicated.

Optionally, the third indication information can be transmitted through MAC CE signaling. Compared with transmission through RRC signaling, the configuration of MAC CE signaling is more flexible, and the modification delay is lower, which can provide greater flexibility for the system. .

Optionally, the number T of the cell groups is determined according to the RRC signaling sent by the network.

Optionally, the number of cell groups T is determined according to the MAC CE signaling sent by the network.

Option 1:

The terminal device receives the aperiodic SRS trigger signaling (referred to as the first signaling) on the cell Z or the BWP Y of the cell Z, and the trigger state corresponding to the first signaling is greater than 0 (the value of which is recorded as value, referred to as value for short). is the first value), that is, a non-zero trigger state, the corresponding aperiodic SRS is sent on the cell determined above.

Optionally, in a certain cell group in the T cell groups corresponding to the first value (referred to as cell group t), the terminal can be in one or more cells in the cell group t according to the first signaling. The corresponding aperiodic SRS is sent on the active cell in the DCI (any active cell is denoted as Z'), and the bits used in the aperiodic SRS trigger field in the DCI can be reused without adding new bits or additional interpretation. bits of other fields. More scenarios can be used.

Optionally, the non-zero trigger state of the aperiodic SRS corresponds to the aforementioned T cell groups.

Optionally, the non-zero code points (codepoing) of the SRS request field correspond to the aforementioned T cell groups. The non-zero codepoing of the SRS request field can correspond to the non-zero trigger state of the aperiodic SRS.

Option 2: The terminal indicates through the first field (field) in the same signaling which cell group (which of the T cell groups) the first signaling corresponds to, which is denoted as cell group t. Equivalently, the bits of other fields in the DCI can be reused without adding new bits or additionally interpreting the bits of other fields.

Optionally, the first field and the aperiodic SRS trigger signaling are in the same DCI signaling (first signaling).

Optionally, the first signaling is indicated by DCI Format 0_1 or DCI Format 0_2.

Optionally, if the value of the UL-SCH indicator in the first signaling is 0, the first field may use all or part of the bits in the following fields of DCI to indicate relevant information:

Carrier indicator field;

BWP indicator (Bandwidth part indicator) field;

Time domain resource assignment domain;

Modulation and coding scheme field;

Redundancy version field;

Hybrid Automatic Repeat Request (HARQ) process number field;

SRS resource indicator (SRS resource indicator) field;

Precoding information and number of layers fields; or

Antenna ports field.

Option 3:

In the same signaling, the terminal device indicates through the first field which cell group (which of the T cell groups) the first signaling corresponds to, which is denoted as cell group t. Compared with option 1, the cell group can be indicated more flexibly, thus providing more room for network scheduling optimization. Compared with option 2, more scenarios can be used, because option 2 can only be applied to scenarios where the UL-SCH indicator value is 0.

Optionally, the first domain is a newly added domain, and whether it exists is determined according to network RRC signaling.

Optionally, the first signaling is indicated by DCI Format 0_1, or DCI Format 0_2, or DCI Format 1_1, or DCI Format 1_2.

Step 3:

The terminal device may send the aperiodic SRS on one or more cells according to the first signaling.

Option 1:

According to the first signaling, the terminal device may send the corresponding aperiodic SRS on an active cell in one or more cells in the cell group t, wherein any active cell is denoted as Z'. Aperiodic SRS transmissions that only trigger other cells can be implemented, which can provide greater flexibility to the network.

Option 2:

According to the first signaling, the terminal device can send the corresponding aperiodic SRS on the active cell in the cell Z and one or more cells in the cell group t, wherein any active cell is denoted as Z', which can include the cell Z in the active cell. Inside. Compared with option 1, the signaling overhead when RRC or MAC CE indicates T cell groups can be reduced.

For each cell Z' in the above determined cells, the aperiodic SRS corresponding to the SRS resource group corresponding to the first signaling value value is sent. Since the aperiodic SRS resource group on Z' is configured with a trigger state, therefore There is an aperiodic SRS resource group corresponding to the first signaling value value on each Z'. The corresponding SRS resource group is configured with one slot offset (slot offset) or multiple slot offsets.

Optionally, the terminal device receives the aperiodic SRS trigger signaling (such as DCI) on the time slot slot n of the cell Z, and the terminal device determines the corresponding time slot offset of the cell Z' according to the time slot offset corresponding to the SRS resource group where the SRS resource is located. SRS resources are transmitted on slot n'.

Optionally, according to the time slot offset k corresponding to the SRS resource group (in the case that the SRS resource group is configured with 1 time slot offset, or when one time slot offset is activated), or the MAC signaling is activated The time slot offset k corresponding to the SRS resource group of the k (in the case where the SRS resource group is configured with multiple time slot offsets), the determined SRS transmission slot, that is, slot n'.

For example, slot n’ can be determined using the following formula:

Wherein, the u _SRS represents the subcarrier spacing configuration corresponding to the SRS, the u _PDCCH represents the subcarrier spacing configuration corresponding to the physical downlink control channel PDCCH used by the trigger signaling, and the k represents the corresponding SRS resource group. slot offset, where n represents the first slot.

As another example, slot n’ can be determined based on the following formula:

Wherein, the u _SRS represents the subcarrier spacing configuration corresponding to the SRS, the u _PDCCH represents the subcarrier spacing configuration corresponding to the physical downlink control channel PDCCH used by the trigger signaling, and the

and the u _{offset, PDCCH} respectively depends on the time slot offset for carrier aggregation CA configured by the upper layer for receiving the physical downlink control channel PDCCH

and u _offset , the

and the u _{offset, the SRS} respectively depends on the slot offset for carrier aggregation CA configured by the upper layer for transmitting the SRS

and u _offset , where k represents the slot offset corresponding to the SRS resource group, and n represents the first slot. also,

and u _offset may be the relevant parameters of the slot offset for CA specified in the communication standard.

Optionally, according to the time slot offset k corresponding to the SRS resource group (in the case that the SRS resource group is configured with 1 time slot offset, or when one time slot offset is activated), or the MAC signaling is activated The time slot offset k corresponding to the SRS resource group of the k (when the SRS resource group is configured with multiple time slot offsets), the kth or k+1th effective time slot on cell Z' after the time slot where the aperiodic SRS trigger signaling is located is slot n '. In this way, the aperiodic SRS can be triggered more flexibly, and the probability of signaling congestion in response to the aperiodic SRS triggering is reduced. Optionally, the valid time slot is a time slot that can transmit the SRS.

Example 2:

In this embodiment, the third indication information is configured for an aperiodic SRS trigger state.

Step 1: The terminal device receives the cell configuration information sent by the network device through RRC signaling.

It should be understood that, for step 1 in Embodiment 2, reference may be made to Step 1 in Embodiment 1, and to avoid repetition, details are not repeated here.

Step 2:

For the non-zero aperiodic SRS trigger state, the network device indicates the T group of cells through the third indication information. Each group of cells contains one or more cells, where T>=1. Optionally, different non-zero aperiodic SRS triggering states may correspond to different groups of cells in the T groups of cells. The aperiodic SRS trigger signaling indicated by the first indication information to be transmitted on the cell Z or the BWP Y of the cell Z can trigger the SRS on some or all cells in the T group of cells, or can trigger the SRS in the T group of cells. SRS on some or all cells of a group.

For cell Z or the BWP Y of cell Z, the network device indicates through the first indication information that the aperiodic SRS trigger state S on cell Z or the BWP Y of cell Z can trigger the SRS on some or all cells in the T group of cells . When the aperiodic SRS trigger signaling on the BWP Y of cell Z or cell Z corresponds to the non-zero aperiodic SRS trigger state S, some of the cell groups corresponding to the non-zero aperiodic SRS trigger state S in the T group of cells are triggered Or SRS on all cells.

Optionally, the aperiodic SRS triggering state S is a non-zero state.

Optionally, corresponding different cell groups may be configured for different aperiodic SRS triggering states.

Optionally, when the network device does not indicate relevant information through the above signaling, the trigger state S corresponding to the aperiodic SRS trigger signaling sent on the cell Z only triggers the SRS sent on the uplink corresponding to the cell Z. Equivalently, when the terminal device does not receive the first indication information, the original triggering method is used.

Optionally, before the terminal device receives the first indication information, the second indication information may be used to determine whether the terminal device triggers the SRS on the cell based on the cell group.

Optionally, the number T of cell groups is determined through network RRC signaling.

The RRC signaling is configured through SRS-Config;

The RRC signaling is configured through ServingCellConfig;

The RRC signaling is configured through SpCellConfig;

The RRC signaling is configured through SCellConfig;

The RRC signaling is configured through ServingCellConfigCommon;

The RRC signaling is configured through UplinkConfig;

The RRC signaling is configured through BWP-Uplink;

The RRC signaling is configured through BWP-UplinkCommon; or

The RRC signaling is configured through BWP-UplinkDedicated.

Option 1:

Carrier indicator field;

BWP indicator (Bandwidth part indicator) field;

Time domain resource assignment domain;

Modulation and coding scheme field;

Redundancy version field;

Hybrid Automatic Repeat Request (HARQ) process number field;

SRS resource indicator (SRS resource indicator) field;

Precoding information and number of layers fields; or

Antenna ports field.

Option 3:

Step 3: It should be understood that, for Step 3 in Embodiment 2, reference may be made to Step 3 in Embodiment 1, and in order to avoid repetition, details are not repeated here.

Example 3:

In this embodiment, the third indication information is configured for the terminal device or a cell group including the first cell.

It should be understood that, for step 1 in Embodiment 3, reference may be made to Step 1 in Embodiment 1, and to avoid repetition, details are not repeated here.

Step 2:

For the terminal device, or for the first cell group of the terminal device, the network device indicates the cells of the T group through the third indication information. Each group of cells contains one or more cells, where T>=1. The aperiodic SRS trigger signaling indicated by the first indication information to be transmitted on the cell Z or the BWP Y of the cell Z can trigger the SRS on some or all cells in the T group of cells, or can trigger the SRS in the T group of cells. SRS on some or all cells in a group. For example, the cell Z may be any cell on the terminal device or any cell in the first cell group. Optionally, the T group of cells (cells) are indicated by signaling, and a certain cell group (denoted as Q) can be further indicated by DCI, and the aperiodic SRS trigger signaling sent on cell Z can trigger the cells of cell group Q. Aperiodic SRS transmission on the network, so that the network can obtain greater flexibility and optimization space, and improve system performance.

Optionally, when the network device does not indicate the relevant information through the above signaling, the aperiodic SRS trigger signaling sent on the cell Z only triggers the SRS sent on the uplink corresponding to the cell Z. Equivalently, when the terminal device does not receive the first indication information, the original triggering method is used.

The third RRC signaling is configured through SRS-Config;

The third RRC signaling is configured through ServingCellConfig;

The third RRC signaling is configured through SpCellConfig;

The third RRC signaling is configured through SCellConfig;

The third RRC signaling is configured through ServingCellConfigCommon;

The third RRC signaling is configured through UplinkConfig;

The third RRC signaling is configured through BWP-Uplink;

The third RRC signaling is configured through BWP-UplinkCommon;

The third RRC signaling is configured through BWP-UplinkDedicated; or

The third RRC signaling is through CellGroupConfig.

Optionally, the number T of cell groups is determined according to the network through RRC signaling.

Optionally, the number of cell groups T is determined according to the network through MAC CE signaling.

Option 1:

The terminal device receives aperiodic SRS trigger signaling (referred to as the first signaling) on any cell or any cell in the first cell group, and the trigger state corresponding to the first signaling is greater than 0 (whichever The value is denoted as value, referred to as the first value for short), that is, in a non-zero trigger state, the corresponding aperiodic SRS is sent on the cell determined above.

Optionally, in a certain cell group in the T cell groups corresponding to the first value (referred to as cell group t), the terminal can be in one or more cells in the cell group t according to the first signaling. The corresponding aperiodic SRS is sent on the active cell in the DCI, and the bits used in the aperiodic SRS trigger field in the DCI can be reused, and there is no need to add new bits, or to additionally interpret the bits of other fields. More scenarios can be used.

Carrier indicator field;

BWP indicator (Bandwidth part indicator) field;

Time domain resource assignment domain;

Modulation and coding scheme field;

Redundancy version field;

Hybrid Automatic Repeat Request (HARQ) process number field;

SRS resource indicator (SRS resource indicator) field;

Precoding information and number of layers fields; or

Antenna ports field.

Option 3:

Optionally, the first domain is a newly added domain, and whether it exists or not is configured by network RRC signaling.

Step 3: It should be understood that for Step 3 in Embodiment 3, reference may be made to Step 3 in Embodiment 1, and in order to avoid repetition, details are not repeated here.

The solution in which the first indication information is used to trigger the SRS corresponding to the SRS resource group has been described above with reference to Embodiment 1 to Embodiment 3. The following describes the first indication information used to trigger the SRS resource in combination with Embodiment 4 to Embodiment 6. The corresponding SRS is described.

Example 4:

step 1:

Optionally, the SRS resource group is configured through RRC signaling SRS-PosResourceSet-r16, and the SRS resources are configured through RRC signaling SRS-PosResource-r16.

Optionally, at least one of the SRS resource groups (denoted as Set X) is configured with multiple (denoted as M, M>=1) trigger states. Optionally, each trigger state corresponds to a value of the SRS request field in the aperiodic SRS trigger signaling, that is, a code point. For example, the value of the trigger state in Table 1.

Optionally, multiple trigger states are configured through aperiodicSRS-ResourceTriggerList-r16 in SRS-PosResourceSet-r16.

Optionally, the value of each element in aperiodicSRS-ResourceTriggerList-r16 is an integer ranging from 1 to N-1.

For another example, the value of N is determined to be 4 or greater (eg, 8 or 16) according to the configuration information sent by the network device; of course, in other alternative embodiments, other names may be used. By increasing the number of states corresponding to the aperiodic SRS triggering signaling, the flexibility of triggering the aperiodic SRS by the DCI can be improved, and the system performance can be improved, thereby enabling the triggering of the aperiodic SRS across cells, reducing the DCI overhead, and increasing the system flexibility.

Optionally, the configuration information indicates the terminal equipment through RRC signaling or MAC CE signaling.

Optionally, the terminal device informs the network device through the terminal device capability reporting information that it can support more aperiodic SRS trigger states (Maximum number of SRS trigger states), that is, N is greater than 4, so that the network device determines N based on the capability reported by the terminal device. .

Optionally, the RRC signaling is configured through SRS-Config

Step 2: It should be understood that, for Step 2 in Embodiment 4, reference may be made to Step 2 in Embodiment 1, and to avoid repetition, details are not repeated here.

Step 3:

The terminal device receives aperiodic SRS trigger signaling (referred to as the first signaling) on cell Z, and the trigger state corresponding to the first signaling is greater than 0 (the value of which is recorded as value, referred to as the first value for short) , that is, a non-zero trigger state, the corresponding aperiodic SRS is sent on the cell determined above.

For each cell (denoted as Z') in the above determined cells, the aperiodic SRS corresponding to the SRS resource group corresponding to the value of the first signaling may be sent, including the cell Z. A trigger state is configured in the aperiodic SRS resource group, so each Z' has an aperiodic SRS resource group corresponding to the first signaling value value. The corresponding SRS resource is configured with 1 slot offset (slot offset) or multiple slot offsets

Optionally, the terminal device receives aperiodic SRS trigger signaling (such as DCI) on the time slot slot n of the cell Z, and the terminal device determines the transmission on the slot n' corresponding to the cell Z' according to the time slot offset corresponding to the SRS resource. SRS resources.

Optionally, according to the time slot offset k corresponding to the SRS resource (in the case that the SRS resource is configured with 1 time slot offset, or when one time slot offset is activated), or the SRS activated by the MAC signaling The time slot offset k corresponding to the resource (when the SRS resource is configured with one or more time slot offsets), or the time slot offset k corresponding to the SRS resource indicated by the aperiodic SRS trigger signaling (in the case of the SRS resource In the case of configuring multiple time slot offsets), determine the transmission slot of the SRS, that is, slot n'.

For example, the slot n' can be determined with reference to the formula involved in Example 1.

Optionally, according to the time slot offset k corresponding to the SRS resource (in the case that the SRS resource is configured with 1 time slot offset, or when one time slot offset is activated), or the SRS activated by the MAC signaling The time slot offset k corresponding to the resource (when the SRS resource is configured with one or more time slot offsets), or the time slot offset k corresponding to the SRS resource indicated by the aperiodic SRS trigger signaling (in the case of the SRS resource In the case of configuring multiple timeslot offsets), the kth or k+1th effective timeslot on cell Z' after the timeslot where the aperiodic SRS trigger signaling is located is slot n'. In this way, the aperiodic SRS can be triggered more flexibly, and the probability of signaling congestion in response to the aperiodic SRS triggering is reduced. Optionally, the valid time slot is a time slot that can transmit the SRS.

Example 5:

It should be understood that for step 1 in Embodiment 5, reference may be made to Step 1 in Embodiment 4, and in order to avoid repetition, details are not repeated here.

Step 2: It should be understood that, for Step 2 in Embodiment 5, reference may be made to Step 2 in Embodiment 2. In order to avoid repetition, details are not repeated here.

Step 3: It should be understood that for Step 3 in Embodiment 5, reference may be made to Step 3 in Embodiment 4, and in order to avoid repetition, details are not repeated here.

Example 6:

It should be understood that, for step 1 in Embodiment 5, reference may be made to Step 1 in Embodiment 3, and to avoid repetition, details are not repeated here.

Step 2: It should be understood that for Step 2 in Embodiment 6, reference may be made to Step 2 in Embodiment 3, and to avoid repetition, details are not repeated here.

Step 3: It should be understood that for Step 3 in Embodiment 6, reference may be made to Step 3 in Embodiment 4, and in order to avoid repetition, details are not repeated here.

The method embodiments of the present application are described in detail above with reference to FIGS. 2 to 16 , and the apparatus embodiments of the present application are described in detail below with reference to FIGS. 17 to 20 .

FIG. 17 is a schematic block diagram of a terminal device 300 according to an embodiment of the present application.

As shown in FIG. 17 , the terminal device 300 may include:

The receiving unit 310 is configured to receive first indication information, where the first indication information is used to determine a target cell group, wherein the aperiodic sounding reference signal SRS trigger signaling on the first cell is used to trigger the target cell group SRS on the active cell.

carrier indication field;

BWP indication field;

frequency domain resource allocation domain;

Time domain resource allocation domain;

modulation coding scheme field;

Redundant version field;

Hybrid automatic repeat request HARQ process ID field;

The transmit power control TPC command field for the predetermined PUSCH;

SRS resource indication field;

precoding information and number of layers fields; or

Antenna port type field.

In some embodiments of the present application, the receiving unit 310 is further configured to:

In some embodiments of the present application, the second indication information is carried through second RRC signaling.

SRS configuration SRS-Config;

Serving cell configuration ServingCellConfig;

Special cell configuration SpCellConfig;

Secondary cell configuration SCellConfig;

Serving cell shared configuration ServingCellConfigCommon;

Uplink configuration UplinkConfig;

Bandwidth Part Uplink BWP-Uplink;

The bandwidth part shares the uplink BWP-UplinkCommon;

Bandwidth Part Dedicated Uplink BWP-UplinkDedicated; or

Cell group CellGroupConfig.

In some embodiments of the present application, the MAC CE signaling includes at least one bit group, one bit group in the at least one bit group corresponds to one cell group in the at least one cell group, and the one bit group The value of one bit in is used to indicate whether the cell corresponding to the one bit belongs to the cell group corresponding to the one bit group.

In some embodiments of the present application, the MAC CE signaling further includes at least one of the following:

the identifier of the first cell;

the identifier of the first bandwidth part BWP of the first cell;

first information for indicating the number of the at least one cell group; or

reserved bits.

In some embodiments of the present application, the MAC CE signaling includes an identity of a cell in each of the at least one cell group.

the identifier of the first cell;

the identifier of the first bandwidth part BWP of the first cell;

first information, used to indicate the number of the at least one cell group;

reserved bits.

In some embodiments of the present application, the value of the aperiodicSRS-ResourceTrigger is an integer from 1 to N-1, where N represents the number of aperiodic SRS trigger states; the value of each element in the aperiodicSRS-ResourceTriggerLis is an integer from 1 to N-1.

In some embodiments of the present application, the N is greater than or equal to 4; if N is greater than 4, the N is indicated by the network device to the terminal device, or the N is reported to the terminal device based on the The capabilities of the network device are determined.

In some embodiments of the present application, the SRS resource group of each cell in the target cell group is configured with at least one time slot offset; the receiving unit 310 is further configured to:

In some embodiments of the present application, the SRS resource group of the one cell is configured with multiple timeslot offsets, and the timeslot offset k corresponding to the SRS resource group of the one cell is the multiple timeslot offsets Active slot offset in .

In some embodiments of the present application, the SRS resource group of the one cell is configured with a slot offset, and the one slot offset is the slot offset k.

In some embodiments of the present application, the second time slot is a valid time slot after the first time slot, and the valid time slot is a time slot that can be used to transmit SRS.

In some embodiments of the present application, the value of each element in the aperiodicSRS-ResourceTriggerLis is an integer from 1 to N-1; the N represents the number of aperiodic SRS trigger states.

In some embodiments of the present application, the SRS resources in the SRS resource group of each cell in the target cell group are configured with at least one time slot offset; the receiving unit 310 is further configured to:

In some embodiments of the present application, the SRS resource group of the one cell is configured with multiple timeslot offsets, and the timeslot offset k' corresponding to the SRS resources in the SRS resource group of the one cell is the multiple timeslot offset k' Activated slot offsets in slot offsets.

In some embodiments of the present application, the SRS resource group of the one cell is configured with a slot offset, and the one slot offset is the slot offset k'.

In some embodiments of the present application, the third time slot is a valid time slot after the first time slot, and the valid time slot is a time slot that can be used to transmit SRS.

It should be understood that the apparatus embodiments and the method embodiments may correspond to each other, and similar descriptions may refer to the method embodiments. Specifically, the terminal device 300 shown in FIG. 17 may correspond to the corresponding subject in executing the method 200 of the embodiment of the present application, and the aforementioned and other operations and/or functions of the various units in the terminal device 300 are respectively for the purpose of realizing the method shown in FIG. 2 . For the sake of brevity, the corresponding processes in each of the methods are not repeated here.

FIG. 18 is a schematic block diagram of a network device 400 provided by an embodiment of the present application.

As shown in FIG. 18, the network device 400 may include:

The sending unit 410 is configured to send first indication information, where the first indication information is used to determine a target cell group, wherein the aperiodic sounding reference signal SRS trigger signaling on the first cell is used to trigger the target cell group SRS on the active cell.

carrier indication field;

BWP indication field;

frequency domain resource allocation domain;

Time domain resource allocation domain;

modulation coding scheme field;

Redundant version field;

Hybrid automatic repeat request HARQ process ID field;

The transmit power control TPC command field for the predetermined PUSCH;

SRS resource indication field;

precoding information and number of layers fields; or

Antenna port type field.

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

Send second indication information, where the second indication information is used to determine whether to trigger the SRS on the cell based on the cell group.

receiving capability information, where the capability information is used to indicate that the terminal device has the capability of triggering an SRS on a cell based on a cell group.

Send third indication information, where the third indication information is used to indicate at least one cell group, and the at least one cell group includes the target cell group.

SRS configuration SRS-Config;

Serving cell configuration ServingCellConfig;

Special cell configuration SpCellConfig;

Secondary cell configuration SCellConfig;

Serving cell shared configuration ServingCellConfigCommon;

Uplink configuration UplinkConfig;

Bandwidth Part Uplink BWP-Uplink;

The bandwidth part shares the uplink BWP-UplinkCommon;

Bandwidth Part Dedicated Uplink BWP-UplinkDedicated; or

Cell group CellGroupConfig.

the identifier of the first cell;

the identifier of the first bandwidth part BWP of the first cell;

first information for indicating the number of the at least one cell group; or

reserved bits.

the identifier of the first cell;

the identifier of the first bandwidth part BWP of the first cell;

first information, used to indicate the number of the at least one cell group;

reserved bits.

Send fourth RRC signaling, where the fourth RRC signaling is used to configure at least one cell, where the at least one cell includes the first cell and cells in the target cell group.

In some embodiments of the present application, the SRS resource groups of different cells are configured through different SRS resource group SRS-ResourceSet signaling, and the SRS resources in different SRS resource groups in the SRS resource group are configured through different SRS resources SRS-Resource Signaling configuration.

In some embodiments of the present application, the SRS resource group of each cell in the target cell group is configured with at least one time slot offset; the sending unit 410 is further configured to:

In some embodiments of the present application, the SRS resources in the SRS resource group of each cell in the target cell group are configured with at least one time slot offset; the sending unit 410 is further configured to:

It should be understood that the apparatus embodiments and the method embodiments may correspond to each other, and similar descriptions may refer to the method embodiments. Specifically, the network device 400 shown in FIG. 18 may correspond to the corresponding subject in executing the method 200 of the embodiment of the present application, and the aforementioned and other operations and/or functions of the various units in the network device 400 are respectively for the purpose of realizing the method shown in FIG. 2 . For the sake of brevity, the corresponding processes in each of the methods are not repeated here.

The communication device of the embodiments of the present application is described above from the perspective of functional modules with reference to the accompanying drawings. It should be understood that the functional modules can be implemented in the form of hardware, can also be implemented by instructions in the form of software, and can also be implemented by a combination of hardware and software modules.

Specifically, the steps of the method embodiments in the embodiments of the present application may be completed by hardware integrated logic circuits in the processor and/or instructions in the form of software, and the steps of the methods disclosed in conjunction with the embodiments of the present application may be directly embodied as hardware The execution of the decoding processor is completed, or the execution is completed by a combination of hardware and software modules in the decoding processor.

Optionally, the software modules may be located in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, and other storage media mature in the art. The storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps in the above method embodiments in combination with its hardware.

For example, the receiving unit or the transmitting unit referred to above may be implemented by a transceiver.

FIG. 19 is a schematic structural diagram of a communication device 500 according to an embodiment of the present application.

As shown in FIG. 19 , the communication device 500 may include a processor 510 .

The processor 510 may call and run a computer program from the memory to implement the methods in the embodiments of the present application.

Continuing to refer to FIG. 19 , the communication device 500 may further include a memory 520 .

Wherein, the memory 520 may be used to store instruction information, and may also be used to store codes, instructions, etc. executed by the processor 510 . The processor 510 may call and run a computer program from the memory 520 to implement the methods in the embodiments of the present application. The memory 520 may be a separate device independent of the processor 510 , or may be integrated in the processor 510 .

Continuing to refer to FIG. 19 , the communication device 500 may further include a transceiver 530 .

The processor 510 may control the transceiver 530 to communicate with other devices, specifically, may send information or data to other devices, or receive information or data sent by other devices. Transceiver 530 may include a transmitter and a receiver. The transceiver 530 may further include antennas, and the number of the antennas may be one or more.

It should be understood that each component in the communication device 500 is connected through a bus system, wherein the bus system includes a power bus, a control bus and a status signal bus in addition to a data bus.

It should also be understood that the communication device 500 may be a terminal device of an embodiment of the present application, and the communication device 500 may implement the corresponding processes implemented by the terminal device in each method of the embodiment of the present application. The communication device 500 may correspond to the terminal device 400 or the terminal device 600 in the embodiment of the present application, and may correspond to the corresponding subject in executing the method according to the embodiment of the present application, which is not repeated here for brevity. Similarly, the communication device 500 may be the network device of the embodiments of the present application, and the communication device 500 may implement corresponding processes implemented by the network device in each method of the embodiments of the present application. That is to say, the communication device 500 in the embodiment of the present application may correspond to the network device 500 or the network device 700 in the embodiment of the present application, and may correspond to the corresponding subject in executing the method according to the embodiment of the present application. This will not be repeated here.

In addition, the embodiment of the present application also provides a chip.

For example, the chip may be an integrated circuit chip, which has a signal processing capability, and can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of the present application. The chip may also be referred to as a system-on-chip, a system-on-chip, a system-on-a-chip, or a system-on-a-chip, or the like. Optionally, the chip can be applied to various communication devices, so that the communication device installed with the chip can execute the methods, steps and logic block diagrams disclosed in the embodiments of the present application.

FIG. 20 is a schematic structural diagram of a chip 600 according to an embodiment of the present application.

As shown in FIG. 20 , the chip 600 includes a processor 610 .

The processor 610 may call and run a computer program from the memory to implement the methods in the embodiments of the present application.

Please continue to refer to FIG. 20 , the chip 600 may further include a memory 620 .

The processor 610 may call and run a computer program from the memory 620 to implement the methods in the embodiments of the present application. The memory 620 may be used to store instruction information, and may also be used to store codes, instructions and the like executed by the processor 610 . The memory 620 may be a separate device independent of the processor 610 , or may be integrated in the processor 610 .

Please continue to refer to FIG. 20 , the chip 600 may further include an input interface 630 .

The processor 610 may control the input interface 630 to communicate with other devices or chips, and specifically, may acquire information or data sent by other devices or chips.

Please continue to refer to FIG. 20 , the chip 600 may further include an output interface 640 .

The processor 610 can control the output interface 640 to communicate with other devices or chips, and specifically, can output information or data to other devices or chips.

It should be understood that the chip 600 can be applied to the network device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the network device in the various methods in the embodiments of the present application, and can also implement the various methods in the embodiments of the present application. For the sake of brevity, the corresponding process implemented by the terminal device in FIG. 1 is not repeated here.

It should also be understood that various components in the chip 600 are connected through a bus system, wherein the bus system includes a power bus, a control bus and a status signal bus in addition to a data bus.

The processors referred to above may include, but are not limited to:

General-purpose processor, Digital Signal Processor (DSP), Application Specific Integrated Circuit (ASIC), Field Programmable Gate Array (FPGA) or other programmable logic devices, discrete gates Or transistor logic devices, discrete hardware components, and so on.

The processor may be used to implement or execute the methods, steps, and logical block diagrams disclosed in the embodiments of this application. The steps of the method disclosed in conjunction with the embodiments of the present application may be directly embodied as executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software module may be located in random access memory, flash memory, read-only memory, programmable read-only memory or erasable programmable memory, registers and other storage media mature in the art. The storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware.

The memory mentioned above includes but is not limited to:

Volatile memory and/or non-volatile memory. Wherein, the non-volatile memory may be a read-only memory (Read-Only Memory, ROM), a programmable read-only memory (Programmable ROM, PROM), an erasable programmable read-only memory (Erasable PROM, EPROM), an electrically programmable read-only memory (Erasable PROM, EPROM). Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. Volatile memory may be Random Access Memory (RAM), which acts as an external cache. By way of illustration and not limitation, many forms of RAM are available, such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM).

It should be noted that the memory described herein is intended to include these and any other suitable types of memory.

Embodiments of the present application also provide a computer-readable storage medium for storing a computer program. The computer-readable storage medium stores one or more programs, the one or more programs including instructions that, when executed by a portable electronic device including a plurality of application programs, enable the portable electronic device to perform the implementation shown in method 200 example method.

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

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

The embodiments of the present application also provide a computer program product, including a computer program.

Optionally, the computer program product can be applied to the network device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the network device in each method of the embodiments of the present application. Repeat.

Optionally, the computer program product can be applied to the mobile terminal/terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiments of the present application, in order to It is concise and will not be repeated here.

A computer program is also provided in the embodiments of the present application. When the computer program is executed by a computer, the computer can execute the method of the embodiment shown in method 200 .

Optionally, the computer program can be applied to the network device in the embodiments of the present application. When the computer program is run on the computer, it causes the computer to execute the corresponding processes implemented by the network device in each method of the embodiments of the present application. For the sake of brevity. , and will not be repeated here.

In addition, an embodiment of the present application further provides a communication system, which may include the above-mentioned terminal equipment and network equipment to form a communication system 100 as shown in FIG. 1 , which is not repeated here for brevity. It should be noted that the terms "system" and the like in this document may also be referred to as "network management architecture" or "network system" and the like.

It should also be understood that the terms used in the embodiments of the present application and the appended claims are only for the purpose of describing specific embodiments, and are not intended to limit the embodiments of the present application.

For example, as used in the embodiments of this application and the appended claims, the singular forms "a," "the," "above," and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. meaning.

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

If implemented in the form of a software functional unit and sold or used as a stand-alone product, it may be stored in a computer-readable storage medium. Based on this understanding, the technical solutions of the embodiments of the present application can be embodied in the form of software products in essence, or the parts that make contributions to the prior art or the parts of the technical solutions, and the computer software products are stored in a storage medium , including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the embodiments of the present application. The aforementioned storage medium includes: a U disk, a removable hard disk, a read-only memory, a random access memory, a magnetic disk or an optical disk and other media that can store program codes.

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

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods may be implemented in other manners.

For example, the division of units, modules or components in the apparatus embodiments described above is only a logical function division, and other division methods may be used in actual implementation. For example, multiple units, modules or components may be combined or integrated. To another system, or some units or modules or components can be ignored, or not implemented.

For another example, the above-mentioned units/modules/components described as separate/display components may or may not be physically separated, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units/modules/components may be selected according to actual needs to achieve the purpose of the embodiments of the present application.

Finally, it should be noted that the mutual coupling or direct coupling or communication connection shown or discussed above may be through some interfaces, indirect coupling or communication connection of devices or units, which may be electrical, mechanical or other forms .

The above contents are only specific implementations of the embodiments of the present application, but the protection scope of the embodiments of the present application is not limited thereto. Changes or substitutions should all be covered within the protection scope of the embodiments of the present application. Therefore, the protection scope of the embodiments of the present application should be subject to the protection scope of the claims.

Claims

A wireless communication method, comprising:

receiving first indication information;

The target cell group is determined based on the first indication information, wherein the aperiodic sounding reference signal SRS trigger signaling on the first cell is used to trigger the SRS on the active cell in the target cell group.
The method according to claim 1, wherein the first indication information indicates the target cell group through a first trigger state in the aperiodic SRS trigger signaling.
The method according to claim 1, wherein the first indication information and the aperiodic SRS trigger signaling are located in the same signaling, and the first indication information is passed through the first indication in the same signaling. field indicates the target cell group.
The method according to claim 3, wherein the value of the uplink shared channel UL-SCH indication in the same signaling is 0, and the first field includes part or all of at least one of the following fields bits;

carrier indication field;

BWP indication field;

frequency domain resource allocation domain;

Time domain resource allocation domain;

modulation coding scheme field;

Redundant version field;

Hybrid automatic repeat request HARQ process ID field;

The transmit power control TPC command field for the predetermined PUSCH;

SRS resource indication field;

precoding information and number of layers fields; or

Antenna port type field.
The method according to claim 4, wherein the same signaling is downlink control information DCI format 0_1 or DCI format 0_2.
The method according to claim 3, wherein the first field is a field dedicated to the first indication information.
The method according to claim 6, wherein the same signaling is downlink control information DCI format 0_1, or DCI format 0_2, DCI format 1_1, or DCI format 1_2.
The method according to claim 6 or 7, wherein whether the first domain exists is determined through first RRC signaling.
The method according to any one of claims 1 to 8, wherein the method further comprises:

Second indication information is received, where the second indication information is used to determine whether to trigger the SRS on the cell based on the cell group.
The method according to claim 9, wherein the second indication information is carried by second RRC signaling.
The method according to any one of claims 1 to 10, wherein the method further comprises:

Sending capability information, where the capability information is used to indicate that the terminal device has the capability of triggering an SRS on a cell based on a cell group.
The method according to any one of claims 1 to 11, wherein the method further comprises:

Third indication information is received, where the third indication information is used to indicate at least one cell group, and the at least one cell group includes the target cell group.
The method according to claim 12, wherein the at least one cell group corresponds to the first cell or a first bandwidth part BWP of the first cell, wherein the first cell or the first The aperiodic SRS trigger signaling on the BWP triggers the SRS on the cell based on the first cell or a cell group in the at least one cell group corresponding to the first BWP.
The method according to claim 12 or 13, wherein the at least one cell group corresponds to at least one trigger state, and the at least one trigger state includes a first trigger state in the aperiodic SRS trigger signaling, wherein , the aperiodic SRS trigger signaling on the first cell or the first BWP triggers the SRS on the cell based on the cell group in the at least one cell group corresponding to the first trigger state.
The method according to claim 14, wherein the first trigger state is a non-zero trigger state.
The method according to claim 12, wherein the at least one cell group corresponds to a terminal equipment or a first cell group of the terminal equipment, wherein the first cell of the terminal equipment or the first cell group of the terminal equipment The aperiodic SRS trigger signaling on the first cell in the cell group triggers the SRS on the cell based on the terminal device or a cell group in the at least one cell group corresponding to the first cell group.
The method according to any one of claims 12 to 16, wherein the third indication information is carried by third RRC signaling.
The method according to claim 17, wherein the third RRC signaling is configured by at least one of the following:

SRS configuration SRS-Config;

Serving cell configuration ServingCellConfig;

Special cell configuration SpCellConfig;

Secondary cell configuration SCellConfig;

Serving cell shared configuration ServingCellConfigCommon;

Uplink configuration UplinkConfig;

Bandwidth Part Uplink BWP-Uplink;

The bandwidth part shares the uplink BWP-UplinkCommon;

Bandwidth Part Dedicated Uplink BWP-UplinkDedicated; or

Cell group CellGroupConfig.
The method according to claim 17 or 18, wherein the third RRC signaling indicates the at least one cell group through a bitmap or a cell identifier.
The method according to any one of claims 12 to 16, wherein the third indication information is carried by medium access control control element (MAC CE) signaling.
The method according to claim 20, wherein the MAC CE signaling indicates the at least one cell group through a bitmap.
The method according to claim 21, wherein the MAC CE signaling comprises at least one bit group, one bit group in the at least one bit group corresponds to one cell group in the at least one cell group, and the The value of one bit in the one bit group is used to indicate whether the cell corresponding to the one bit bit belongs to the cell group corresponding to the one bit group.
The method according to claim 22, wherein the MAC CE signaling further comprises at least one of the following:

the identifier of the first cell;

the identifier of the first bandwidth part BWP;

first information for indicating the number of the at least one cell group; or

reserved bits.
The method according to claim 20, wherein the MAC CE signaling indicates the at least one cell group through a cell identity.
The method of claim 24, wherein the MAC CE signaling includes an identity of a cell in each of the at least one cell group.
The method of claim 25, wherein the MAC CE signaling further comprises at least one of the following:

the identifier of the first cell;

the identifier of the first bandwidth part BWP of the first cell;

first information, used to indicate the number of the at least one cell group;

second information, one of the second information is used to indicate the number of cells in each cell group in the at least one cell group, or one of the second information is used to indicate the number of cells in a cell group;

third information, one piece of third information is used to indicate a cell group to which a cell indicated by a cell identifier belongs; or

reserved bits.
The method according to any one of claims 12 to 26, wherein the number of the at least one cell group is predefined, or the number of the at least one cell group is indicated by a network device, or the The number of at least one cell group is determined by the terminal device according to the configuration information sent by the network device.
The method of claim 27, wherein the maximum number of cells in each of the at least one cell group is 2, 4, 8 or 32.
The method according to any one of claims 1 to 28, wherein the method further comprises:

Fourth RRC signaling is received, where the fourth RRC signaling is used to configure at least one cell, where the at least one cell includes the first cell and cells in the target cell group.
The method according to claim 29, wherein the SRS resource groups of the different cells are configured through different SRS resource group SRS-ResourceSet signaling, and the SRS resources in the different SRS resource groups in the SRS resource group are configured through different SRS resource groups. SRS resource SRS-Resource signaling configuration.
The method according to claim 30, wherein the SRS-ResourceSet signaling or the SRS-Resource signaling is configured through SRS configuration SRS-Config.
The method according to claim 30 or 31, wherein for multiple trigger states corresponding to the SRS resource group of the first cell and the SRS resource group of the cells in the target cell group, the SRS resource group information AperiodicSRS-ResourceTrigger in the element SRS-ResourceSet IE triggers aperiodicSRS-ResourceTrigger and/or aperiodicSRS-ResourceTriggerList configuration, the aperiodicSRS-ResourceTrigger is used to configure one of the multiple non-zero trigger states , the aperiodicSRS-ResourceTriggerList is used to configure one or more than one trigger states in the multiple non-zero trigger states.
The method according to claim 32, wherein the value of the aperiodicSRS-ResourceTrigger is an integer from 1 to N-1, where N represents the number of aperiodic SRS trigger states; each of the aperiodicSRS-ResourceTriggerLis The value of the element is an integer from 1 to N-1.
The method according to claim 33, wherein the N is greater than or equal to 4; if N is greater than 4, the N is indicated by the network device to the terminal device, or the N is based on the terminal device The capability of reporting to the network device is determined.
The method according to any one of claims 30 to 34, wherein the SRS resource group of each cell in the target cell group is configured with at least one time slot offset; the method comprises:

The second time slot is determined based on the first time slot and the time slot offset k corresponding to the SRS resource group of one cell in the target cell group, and the first time slot is where the aperiodic SRS trigger signaling is located The SRS resource group of the one cell is the SRS resource group corresponding to the first value, and the first value is the value of the trigger state in the aperiodic SRS trigger signaling;

On the second time slot of the one cell, the SRS corresponding to the SRS resource group of the one cell is sent.
The method according to claim 35, wherein the SRS resource group of the one cell is configured with a plurality of time slot offsets, and the time slot offset k corresponding to the SRS resource group of the one cell is the plurality of time slot offsets Activated slot offset in slot offset.
The method according to claim 35, wherein the SRS resource group of the one cell is configured with a slot offset, and the one slot offset is the slot offset k.
The method according to any one of claims 35 to 37, wherein the second time slot is an effective time slot after the first time slot, and the effective time slot is a time slot available for transmitting SRS gap.
The method according to claim 29, wherein SRS resource groups of different cells are configured through SRS-PosResourceSet-r16 signaling of different SRS-Pos resource groups version 16, and SRSs of different SRS resource groups in the SRS resource group The resources are configured through different SRS Pos resource version 16 SRS-PosResource-r16 signaling.
The method according to claim 39, wherein the SRS-PosResourceSet-r16 signaling and the SRS-PosResource-r16 are configured through SRS configuration SRS-Config.
The method according to claim 39 or 40, wherein for multiple trigger states corresponding to the SRS resource group of the first cell and the SRS resource group of the cells in the target cell group, the SRS- AperiodicSRS-ResourceTriggerList-r16 configuration in PosResourceSet-r16 for aperiodic SRS resource trigger list version 16.
The method according to claim 41, wherein the value of each element in the aperiodicSRS-ResourceTriggerLis is an integer from 1 to N-1; the N represents the number of aperiodic SRS trigger states.
The method according to claim 42, wherein the N is greater than or equal to 4; if N is greater than 4, the N is indicated by the network device to the terminal device, or the N is based on the terminal device The capability of reporting to the network device is determined.
The method according to any one of claims 39 to 43, wherein the SRS resources in the SRS resource group of each cell in the target cell group are configured with at least one time slot offset; the method further include:

A third time slot is determined based on the first time slot and the time slot offset k' corresponding to the SRS resource in the SRS resource group of one cell in the target cell group, and the first time slot is the aperiodic SRS trigger The time slot where the signaling is located, the SRS resource group of the one cell is the SRS resource group corresponding to the first value, and the first value is the value of the trigger state in the aperiodic SRS trigger signaling;

On the third time slot of the one cell, the SRS corresponding to the SRS resource in the SRS resource group of the one cell is sent.
The method according to claim 44, wherein the SRS resource group of the one cell is configured with multiple time slot offsets, and the time slot offset k' corresponding to the SRS resources in the SRS resource group of the one cell is an activated slot offset among the plurality of slot offsets.
The method according to claim 44, wherein the SRS resource group of the one cell is configured with a slot offset, and the one slot offset is the slot offset k'.
The method according to any one of claims 44 to 46, wherein the third time slot is an effective time slot after the first time slot, and the effective time slot is a time slot available for transmitting SRS gap.
A wireless communication method, comprising:

Send first indication information, where the first indication information is used to determine the target cell group, wherein the aperiodic sounding reference signal SRS trigger signaling on the first cell is used to trigger the SRS on the active cell in the target cell group .
The method according to claim 48, wherein the first indication information indicates the target cell group through a first trigger state in the aperiodic SRS trigger signaling.
The method according to claim 48, wherein the first indication information and the aperiodic SRS trigger signaling are located in the same signaling, and the first indication information is passed through the first indication in the same signaling. field indicates the target cell group.
The method according to claim 50, wherein the value of the uplink shared channel UL-SCH indication in the same signaling is 0, and the first field includes part or all of at least one of the following fields bits;

carrier indication field;

BWP indication field;

frequency domain resource allocation domain;

Time domain resource allocation domain;

modulation coding scheme field;

Redundant version field;

Hybrid automatic repeat request HARQ process ID field;

The transmit power control TPC command field for the predetermined PUSCH;

SRS resource indication field;

precoding information and number of layers fields; or

Antenna port type field.
The method according to claim 51, wherein the same signaling is downlink control information DCI format 0_1 or DCI format 0_2.
The method according to claim 50, wherein the first field is a field dedicated to the first indication information.
The method according to claim 53, wherein the same signaling is downlink control information DCI format 0_1, or DCI format 0_2, DCI format 1_1, or DCI format 1_2.
The method according to claim 53 or 54, wherein whether the first domain exists is determined through first RRC signaling.
The method according to any one of claims 48 to 55, wherein the method further comprises:

Send second indication information, where the second indication information is used to determine whether to trigger the SRS on the cell based on the cell group.
The method according to claim 56, wherein the second indication information is carried by second RRC signaling.
The method according to any one of claims 48 to 57, wherein the method further comprises:

receiving capability information, where the capability information is used to indicate that the terminal device has the capability of triggering an SRS on a cell based on a cell group.
The method according to any one of claims 48 to 58, wherein the method further comprises:

Send third indication information, where the third indication information is used to indicate at least one cell group, and the at least one cell group includes the target cell group.
The method of claim 59, wherein the at least one cell group corresponds to the first cell or a first bandwidth part BWP of the first cell, wherein the first cell or the first The aperiodic SRS trigger signaling on the BWP triggers the SRS on the cell based on the first cell or a cell group in the at least one cell group corresponding to the first BWP.
The method according to claim 59 or 60, wherein the at least one cell group corresponds to at least one trigger state, and the at least one trigger state includes the first trigger state in the aperiodic SRS trigger signaling, wherein , the aperiodic SRS trigger signaling on the first cell or the first BWP triggers the SRS on the cell based on the cell group in the at least one cell group corresponding to the first trigger state.
The method of claim 61, wherein the first trigger state is a non-zero trigger state.
The method according to claim 59, wherein the at least one cell group corresponds to a terminal equipment or a first cell group of the terminal equipment, wherein the first cell of the terminal equipment or the first cell group of the terminal equipment The aperiodic SRS trigger signaling on the first cell in the cell group triggers the SRS on the cell based on the terminal device or a cell group in the at least one cell group corresponding to the first cell group.
The method according to any one of claims 59 to 63, wherein the third indication information is carried by third RRC signaling.
The method according to claim 64, wherein the third RRC signaling is configured by at least one of the following:

SRS configuration SRS-Config;

Serving cell configuration ServingCellConfig;

Special cell configuration SpCellConfig;

Secondary cell configuration SCellConfig;

Serving cell shared configuration ServingCellConfigCommon;

Uplink configuration UplinkConfig;

Bandwidth Part Uplink BWP-Uplink;

The bandwidth part shares the uplink BWP-UplinkCommon;

Bandwidth Part Dedicated Uplink BWP-UplinkDedicated; or

Cell group CellGroupConfig.
The method according to claim 64 or 65, wherein the third RRC signaling indicates the at least one cell group through a bitmap or a cell identifier.
The method according to claim 66, wherein the third indication information is carried by medium access control element (MAC CE) signaling.
The method of claim 67, wherein the MAC CE signaling indicates the at least one cell group through a bitmap.
The method according to claim 68, wherein the MAC CE signaling comprises at least one bit group, one bit group in the at least one bit group corresponds to one cell group in the at least one cell group, and the The value of one bit in the one bit group is used to indicate whether the cell corresponding to the one bit bit belongs to the cell group corresponding to the one bit group.
The method of claim 69, wherein the MAC CE signaling further comprises at least one of the following:

the identifier of the first cell;

the identifier of the first bandwidth part BWP of the first cell;

first information for indicating the number of the at least one cell group; or

reserved bits.
The method of claim 68, wherein the MAC CE signaling indicates the at least one cell group through a cell identity.
The method of claim 71, wherein the MAC CE signaling includes an identity of a cell in each of the at least one cell group.
The method of claim 72, wherein the MAC CE signaling further comprises at least one of the following:

the identifier of the first cell;

the identifier of the first bandwidth part BWP of the first cell;

first information, used to indicate the number of the at least one cell group;

second information, one of the second information is used to indicate the number of cells in each cell group in the at least one cell group, or one of the second information is used to indicate the number of cells in a cell group;

third information, one piece of third information is used to indicate a cell group to which a cell indicated by a cell identifier belongs; or

reserved bits.
The method according to any one of claims 59 to 73, wherein the number of the at least one cell group is predefined, or the number of the at least one cell group is indicated by a network device, or the The number of at least one cell group is determined by the terminal device according to the configuration information sent by the network device.
The method of claim 74, wherein the maximum number of cells in each of the at least one cell group is 2, 4, 8 or 32.
The method according to any one of claims 48 to 75, wherein the method further comprises:

Send fourth RRC signaling, where the fourth RRC signaling is used to configure at least one cell, where the at least one cell includes the first cell and cells in the target cell group.
The method according to claim 76, wherein SRS resource groups of different cells are configured through different SRS resource group SRS-ResourceSet signaling, and SRS resources in different SRS resource groups in the SRS resource group are configured through different SRS resource groups. Resource SRS-Resource signaling configuration.
The method according to claim 77, wherein the SRS-ResourceSet signaling or the SRS-Resource signaling is configured through SRS configuration SRS-Config.
The method according to claim 77 or 78, wherein for multiple trigger states corresponding to the SRS resource group of the first cell and the SRS resource group of the cells in the target cell group, the SRS resource group information AperiodicSRS-ResourceTrigger in the element SRS-ResourceSet IE triggers aperiodicSRS-ResourceTrigger and/or aperiodicSRS-ResourceTriggerList configuration, the aperiodicSRS-ResourceTrigger is used to configure one of the multiple non-zero trigger states , the aperiodicSRS-ResourceTriggerList is used to configure one or more than one trigger states in the multiple non-zero trigger states.
The method according to claim 79, wherein the value of the aperiodicSRS-ResourceTrigger is an integer from 1 to N-1, where N represents the number of aperiodic SRS trigger states; each of the aperiodicSRS-ResourceTriggerLis The value of the element is an integer from 1 to N-1.
The method according to claim 80, wherein the N is greater than or equal to 4; if N is greater than 4, the N is indicated by the network device to the terminal device, or the N is based on the terminal device The capability of reporting to the network device is determined.
The method according to any one of claims 77 to 81, wherein the SRS resource group of each cell in the target cell group is configured with at least one time slot offset; the method comprises:

The second time slot is determined based on the first time slot and the time slot offset k corresponding to the SRS resource group of one cell in the target cell group, and the first time slot is where the aperiodic SRS trigger signaling is located time slot, the SRS resource group of the one cell is the SRS resource group corresponding to the first value, and the first value is the value of the trigger state in the aperiodic SRS trigger signaling;

On the second time slot of the one cell, the SRS corresponding to the SRS resource group of the one cell is sent.
The method according to claim 82, wherein the SRS resource group of the one cell is configured with multiple timeslot offsets, and the timeslot offset k corresponding to the SRS resource group of the one cell is the multiple timeslot offsets k Activated slot offset in slot offset.
The method according to claim 82, wherein the SRS resource group of the one cell is configured with a slot offset, and the one slot offset is the slot offset k.
The method according to any one of claims 82 to 84, wherein the second time slot is an effective time slot after the first time slot, and the effective time slot is a time slot available for transmitting SRS gap.
The method according to claim 85, wherein SRS resource groups of different cells are configured through SRS-PosResourceSet-r16 signaling of different SRS-Pos resource groups version 16, and SRSs of different SRS resource groups in the SRS resource group The resources are configured through different SRS Pos resource version 16 SRS-PosResource-r16 signaling.
The method according to claim 86, wherein the SRS-PosResourceSet-r16 signaling and the SRS-PosResource-r16 are configured through SRS configuration SRS-Config.
The method according to claim 86 or 87, wherein for multiple trigger states corresponding to the SRS resource group of the first cell and the SRS resource group of the cells in the target cell group, the SRS- AperiodicSRS-ResourceTriggerList-r16 configuration in PosResourceSet-r16 for aperiodic SRS resource trigger list version 16.
The method according to claim 88, wherein the value of each element in the aperiodicSRS-ResourceTriggerLis is an integer from 1 to N-1; the N represents the number of aperiodic SRS trigger states.
The method according to claim 89, wherein the N is greater than or equal to 4; if N is greater than 4, the N is indicated by the network device to the terminal device, or the N is based on the terminal device The capability of reporting to the network device is determined.
The method according to any one of claims 86 to 90, wherein the SRS resources in the SRS resource group of each cell in the target cell group are configured with at least one time slot offset; the method further include:

A third time slot is determined based on the first time slot and the time slot offset k' corresponding to the SRS resource in the SRS resource group of one cell in the target cell group, and the first time slot is the aperiodic SRS trigger The time slot where the signaling is located, the SRS resource group of the one cell is the SRS resource group corresponding to the first value, and the first value is the value of the trigger state in the aperiodic SRS trigger signaling;

On the third time slot of the one cell, the SRS corresponding to the SRS resource in the SRS resource group of the one cell is sent.
The method according to claim 91, wherein the SRS resource group of the one cell is configured with multiple time slot offsets, and the time slot offset k' corresponding to the SRS resources in the SRS resource group of the one cell is an activated slot offset among the plurality of slot offsets.
The method according to claim 91, wherein the SRS resource group of the one cell is configured with a slot offset, and the one slot offset is the slot offset k'.
The method according to any one of claims 91 to 93, wherein the third time slot is an effective time slot after the first time slot, and the effective time slot is a time slot available for transmitting SRS gap.
A terminal device, characterized in that it includes:

A receiving unit, configured to receive first indication information, where the first indication information is used to indicate that the aperiodic sounding reference signal SRS trigger signaling on the first cell is used to trigger the SRS on the active cell in the target cell group.
A network device, characterized in that it includes:

A sending unit, configured to send first indication information, where the first indication information is used to indicate that the aperiodic sounding reference signal SRS trigger signaling on the first cell is used to trigger the SRS on the active cell in the target cell group.
A terminal device, characterized in that it includes:

A processor, a memory and a transceiver, the memory for storing a computer program, the processor for invoking and running the computer program stored in the memory to perform the method of any one of claims 1 to 47.
A network device, characterized in that it includes:

A processor, a memory and a transceiver, the memory for storing a computer program, the processor for invoking and executing the computer program stored in the memory to perform the method of any one of claims 48 to 94.
A chip, characterized in that it includes:

A processor for invoking and running a computer program from the memory, so that the device equipped with the chip performs the method as claimed in any one of claims 1 to 47, or the method as claimed in any one of claims 48 to 94 method described.
A computer-readable storage medium, characterized by being used for storing a computer program, the computer program causing a computer to execute the method according to any one of claims 1 to 47, or any one of claims 48 to 94 method described in item.
A computer program product, characterized by comprising computer program instructions that cause a computer to perform a method as claimed in any one of claims 1 to 47 or as claimed in any one of claims 48 to 94 method described.
A computer program, characterized in that the computer program causes a computer to perform the method as claimed in any one of claims 1 to 47 or the method as claimed in any one of claims 48 to 94.