Uplink transmission method and communication apparatus

Abstract

An uplink transmission method and a communication apparatus. In the method, a terminal device determines that an association relationship between two SRS resource sets configured by a network device for the terminal device and SBFD and non-SBFD time units is a first association relationship or a second association relationship, wherein the first association relationship is that a first SRS resource set is associated with the SBFD time unit and a second SRS resource set is associated with the non-SBFD time unit, and the second association relationship is that the first SRS resource set is associated with the non-SBFD time unit and the second SRS resource set is associated with the SBFD time unit; then, the terminal device sends PUSCH repetitions on corresponding time units on the basis of the SRS resource sets associated with the time units. The method can ensure that different types of time units are associated with different SRS resource sets, thereby ensuring that PUSCH repetitions are sent on different types of time units by using different spatial domain parameters.

Description

Uplink transmission method and communication device

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on November 3, 2023, with application number 202311462035.2 and application name “Method and Communication Device for Uplink Transmission”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of communications, and more specifically, to an uplink transmission method and a communication device. Background Art

[0003] With the rapid development of fifth-generation mobile communication technology, new radio (NR), a diverse range of communication needs have emerged. To meet the demands of emerging services, a subband full-duplex (SBFD) solution has been proposed to improve the uplink coverage of time-division duplex (TDD) systems. Subband full-duplex means that in TDD systems, network devices use different subbands for uplink and downlink transmissions, enabling both reception and transmission within a single time slot or orthogonal frequency division multiplexing (OFDM) symbol.

[0004] In a TDD system, the protocol supports terminal devices sending physical uplink shared channel (PUSCH) repetitions, and different repetitions can use different spatial parameters. Taking PUSCH repetition type A as an example, specifically, the network device can configure two sounding reference signal (SRS) resource sets for the terminal device, and the terminal device can associate the two SRS resource sets with different time slots based on the existing SRS resource set mapping pattern. The existing SRS resource set mapping pattern includes a cyclic mapping method, a sequential mapping method, etc. Afterwards, the terminal device sends PUSCH repetitions on the corresponding time slot based on the spatial parameters determined by the SRS resource set associated with each time slot.

[0005] Since the channel environments and interference environments corresponding to SBFD time slots and uplink time slots (or flexible time slots) are different, if PUSCH repetitions are to be sent in SBFD time slots and uplink time slots (or flexible time slots), the optimal spatial domain parameters used for sending PUSCH repetitions in SBFD time slots and uplink time slots (or flexible time slots) are different. Currently, SBFD time slots and non-SBFD time slots can be flexibly configured, for example, as XXXXU and DXXXU, where X represents the SBFD time slot, U represents the uplink time slot, and D represents the downlink time slot. Based on the existing SRS resource set mapping pattern, it cannot be guaranteed that SBFD time slots and non-SBFD time slots are associated with different SRS resource sets, that is, it cannot be guaranteed that different spatial domain parameters are used to send PUSCH repetitions in SBFD time slots and non-SBFD time slots.

[0006] Summary of the Invention

[0007] The present application provides an uplink transmission method and a communication device, which can use different spatial domain parameters to send PUSCH repetitions in SBFD time slots and non-SBFD time slots.

[0008] In a first aspect, a method for uplink transmission is provided. The method may be executed by a terminal device, or may be executed by a component of the terminal device (such as a chip or circuit), which is not limited in this application.

[0009] The method includes: receiving a first signaling from a network device, the first signaling indicating sending a first signal, wherein the first signal is carried on a physical uplink shared channel PUSCH; determining whether the association relationship between a first sounding reference signal SRS resource set and a second SRS resource set and a sub-band full-duplex SBFD time unit and a non-SBFD time unit is a first association relationship or a second association relationship, wherein the first SRS resource set and the second SRS resource set are two SRS resource sets configured by the network device for a terminal device, the first association relationship is that the first SRS resource set is associated with the SBFD time unit, and the second SRS resource set is associated with the non-SBFD time unit, and the second association relationship is that the first SRS resource set is associated with the non-SBFD time unit, and the second SRS resource set is associated with the SBFD time unit; sending the first signal on the SBFD time unit based on the SRS resource set associated with the SBFD time unit, and / or sending the first signal on the non-SBFD time unit based on the SRS resource set associated with the non-SBFD time unit.

[0010] In the above technical solution, the terminal device can ensure that different SRS resource sets are associated with SBFD time units and non-SBFD time units based on the first association relationship or the second association relationship, thereby ensuring that the first signal is sent using different spatial domain parameters in SBFD time units and non-SBFD time units.

[0011] In certain implementations of the first aspect, determining that the association relationship between the first SRS resource set and the second SRS resource set and the SBFD time unit and the non-SBFD time unit is the first association relationship or the second association relationship includes: receiving first information from a network device, the first information indicating the first association relationship or the second association relationship; based on the first information, determining that the association relationship between the first SRS resource set and the second SRS resource set and the SBFD time unit and the non-SBFD time unit is the first association relationship or the second association relationship.

[0012] In certain implementations of the first aspect, the first information is carried in the second signaling, which is the radio resource control RRC signaling, or the first information is carried in the SRS resource set indication information field of the first signaling, which is the downlink control information DCI.

[0013] In the above technical solution, the terminal device may indicate the association relationship between the first SRS resource set and the second SRS resource set and the SBFD time unit and the non-SBFD time unit based on the RRC configuration or DCI of the network device.

[0014] In certain implementations of the first aspect, the first SRS resource set includes a first field and / or the second SRS resource set includes a second field, the first field indicates that the first SRS resource set is associated with an SBFD time unit or a non-SBFD time unit, the second field indicates that the second SRS resource set is associated with an SBFD time unit or a non-SBFD time unit, the time unit types associated with the first SRS resource set and the second SRS resource set are different, and determining that the association relationship between the first SRS resource set and the second SRS resource set and the SBFD time unit and the non-SBFD time unit is the first association relationship or the second association relationship includes: determining, based on the first field and / or the second field, that the association relationship between the first SRS resource set and the second SRS resource set and the SBFD time unit and the non-SBFD time unit is the first association relationship or the second association relationship.

[0015] In the above technical solution, a field may be added to the first SRS resource set and / or the second SRS resource set to indicate the association relationship between the first SRS resource set and the second SRS resource set and the SBFD time unit and the non-SBFD time unit.

[0016] In certain implementations of the first aspect, when the value of the first field is a first value, it indicates that the first SRS resource set is associated with the SBFD time unit; when the value of the first field is a second value, it indicates that the first SRS resource set is associated with the non-SBFD time unit; when the value of the second field is a first value, it indicates that the second SRS resource set is associated with the SBFD time unit; when the value of the second field is a second value, it indicates that the second SRS resource set is associated with the non-SBFD time unit.

[0017] In certain implementations of the first aspect, a value of the first field is different from a value of the second field.

[0018] In certain implementations of the first aspect, determining the association relationship between the first SRS resource set and the second SRS resource set and the SBFD time unit and the non-SBFD time unit is a first association relationship or a second association relationship, including: the first SRS resource set is an SRS resource set dedicated to SBFD, and determining the association relationship between the first SRS resource set and the second SRS resource set and the SBFD time unit and the non-SBFD time unit is a first association relationship; or, the second SRS resource set is an SRS resource set dedicated to SBFD, and determining the association relationship between the first SRS resource set and the second SRS resource set and the SBFD time unit and the non-SBFD time unit is a second association relationship.

[0019] In the above technical solution, an SRS resource set dedicated to SBFD may be defined. This SRS resource set is only associated with SBFD time units, and another SRS resource set is only associated with non-SBFD time units.

[0020] In certain implementations of the first aspect, the method further includes: receiving second information from a network device, the second information indicating that the first signal is transmitted in the first transmission mode or the second transmission mode, wherein the first transmission mode indicates that the first signal is sent in an SBFD time unit or a non-SBFD time unit, and the second transmission mode indicates that the first signal is sent in an SBFD time unit and a non-SBFD time unit; and determining, based on the second information, to transmit the first signal in the first transmission mode or the second transmission mode.

[0021] In the above technical solution, dynamic switching between transmission mode 1 and transmission mode 2 can be achieved through the second information, thereby improving the flexibility of signal transmission.

[0022] In certain implementations of the first aspect, the second information is carried in an SRS resource set indication information field in the first signaling, and the first signaling is downlink control information DCI.

[0023] In the above technical solution, the SRS resource set indication information field in the DCI can be reinterpreted to indicate the second information without increasing the DCI length.

[0024] In certain implementations of the first aspect, the method further includes: receiving third information from a network device, wherein the third information indicates that the first signal is transmitted in a first transmission mode, or the third information indicates that the first signal is transmitted in a second transmission mode, or the third information indicates that the first signal is transmitted based on the second information.

[0025] In the above technical solution, the network device can semi-statically configure three different transmission modes through the third information.

[0026] In certain implementations of the first aspect, the third information is carried in the second signaling, and the second signaling is radio resource control RRC signaling.

[0027] In a second aspect, a method for uplink transmission is provided. The method can be executed by a network device, or can also be executed by a component of the network device (such as a chip or circuit), which is not limited in this application.

[0028] The method includes: sending a first signaling to a terminal device, the first signaling indicating sending a first signal, wherein the first signal is carried on a physical uplink shared channel (PUSCH); receiving the first signal in a sub-band full-duplex SBFD time unit, and / or receiving the first signal in a non-SBFD time unit, wherein the first signal received in the SBFD time unit is transmitted based on an SRS resource set associated with the SBFD time unit in two sounding reference signal (SRS) resource sets configured for the terminal device, and the first signal received in the non-SBFD time unit is transmitted based on an SRS resource set associated with the non-SBFD time unit in two SRS resource sets, the two SRS resource sets include a first SRS resource set and a second SRS resource set, and the association relationship between the two SRS resource sets and the SBFD time unit and the non-SBFD time unit is a first association relationship or a second association relationship, the first association relationship being that the first SRS resource set is associated with the SBFD time unit and the second SRS resource set is associated with the non-SBFD time unit; the second association relationship being that the first SRS resource set is associated with the non-SBFD time unit and the second SRS resource set is associated with the SBFD time unit.

[0029] For the beneficial effects of the second aspect, please refer to the description of the first aspect and will not be repeated here.

[0030] In certain implementations of the second aspect, the method further includes: sending first information to the terminal device, where the first information indicates the first association relationship or the second association relationship.

[0031] In certain implementations of the second aspect, the first information is carried in the second signaling, which is the radio resource control RRC signaling, or the first information is carried in the SRS resource set indication information field of the first signaling, which is the downlink control information DCI.

[0032] In certain implementations of the second aspect, the first SRS resource set includes a first field and / or the second SRS resource set includes a second field, the first field indicates that the first SRS resource set is associated with an SBFD time unit or a non-SBFD time unit, the second field indicates that the second SRS resource set is associated with an SBFD time unit or a non-SBFD time unit, and the time unit types associated with the first SRS resource set and the second SRS resource set are different.

[0033] In certain implementations of the second aspect, when the value of the first field is a first value, it indicates that the first SRS resource set is associated with the SBFD time unit; when the value of the first field is a second value, it indicates that the first SRS resource set is associated with the non-SBFD time unit; when the value of the second field is a first value, it indicates that the second SRS resource set is associated with the SBFD time unit; when the value of the second field is a second value, it indicates that the second SRS resource set is associated with the non-SBFD time unit.

[0034] In certain implementations of the second aspect, a value of the first field is the same as a value of the second field.

[0035] In certain implementations of the second aspect, the first SRS resource set is an SRS resource set dedicated to SBFD; or, the second SRS resource set is an SRS resource set dedicated to SBFD.

[0036] In certain implementations of the second aspect, the method further includes: sending second information to the terminal device, the second information indicating that the first signal is transmitted in the first transmission mode or the second transmission mode, wherein the first transmission mode indicates that the first signal is sent in the SBFD time unit or the non-SBFD time unit, and the second transmission mode indicates that the first signal is sent in the SBFD time unit and the non-SBFD time unit.

[0037] In certain implementations of the second aspect, the second information is carried in an SRS resource set indication information field in the first signaling, and the first signaling is downlink control information DCI.

[0038] In certain implementations of the second aspect, the method further includes: sending third information to the terminal device, wherein the third information indicates that the first signal is transmitted in the first transmission mode, or the third information indicates that the first signal is transmitted in the second transmission mode, or the third information indicates that the first signal is transmitted based on the second information.

[0039] In certain implementations of the second aspect, the third information is carried in the second signaling, and the second signaling is radio resource control RRC signaling.

[0040] In a third aspect, a communication device is provided, configured to execute the method provided in the first or second aspect. Specifically, the communication device may include units and / or modules configured to execute the method provided in the first aspect or any one of the aforementioned implementations of the first aspect, or units and / or modules, such as a processing unit and / or a transceiver unit, configured to execute the method provided in the second aspect or any one of the aforementioned implementations of the second aspect.

[0041] In one implementation, the communication device is a device (e.g., a terminal device or a network device). When the communication device is a device, the transceiver unit may be a transceiver or an input / output interface; and the processing unit may be at least one processor. Alternatively, the transceiver may be a transceiver circuit. Alternatively, the input / output interface may be an input / output circuit.

[0042] In another implementation, the communication device is a chip, chip system, or circuit used in a device (such as a terminal device or a network device). When the communication device is a chip, chip system, or circuit used in a device, the transceiver unit may be an input / output interface, interface circuit, output circuit, input circuit, pin, or related circuit on the chip, chip system, or circuit; the processing unit may be at least one processor, processing circuit, or logic circuit.

[0043] In a fourth aspect, a communication device is provided, which includes: a memory for storing programs; and at least one processor for executing computer programs or instructions stored in the memory to execute the method provided by the first aspect or any one of the above-mentioned implementations of the first aspect, or to execute the method provided by the second aspect or any one of the above-mentioned implementations of the second aspect.

[0044] In one implementation, the communication device is a device (such as a terminal device or a network device).

[0045] In another implementation, the device is a chip, a chip system, or a circuit used in a device (such as a terminal device or a network device).

[0046] In a fifth aspect, the present application provides a processor for executing the methods provided in the above aspects.

[0047] For the operations such as sending and acquiring / receiving involved in the processor, unless otherwise specified, or if they do not conflict with their actual functions or internal logic in the relevant descriptions, they can be understood as processor output, reception, input and other operations, and can also be understood as sending and receiving operations performed by the radio frequency circuit and antenna. This application does not limit this.

[0048] In a sixth aspect, a computer-readable storage medium is provided, which stores a program code for execution by a device, wherein the program code includes instructions for executing the method provided by the first aspect or any one of the above-mentioned implementations of the first aspect, or includes instructions for executing the method provided by the second aspect or any one of the above-mentioned implementations of the second aspect.

[0049] In the seventh aspect, a computer program product comprising instructions is provided. When the computer program product is run on a computer, the computer is caused to execute the method provided by the first aspect or any one of the above-mentioned implementations of the first aspect, or the computer is caused to execute the method provided by the second aspect or any one of the above-mentioned implementations of the second aspect.

[0050] In an eighth aspect, a chip is provided, which includes a processor and a communication interface. The processor reads instructions stored in a memory through the communication interface, executes the method provided by the first aspect or any one of the above-mentioned implementations of the first aspect, or executes the method provided by the second aspect or any one of the above-mentioned implementations of the second aspect.

[0051] Optionally, as an implementation method, the chip also includes a memory, in which a computer program or instruction is stored, and the processor is used to execute the computer program or instruction stored on the memory. When the computer program or instruction is executed, the processor is used to execute the method provided by the above-mentioned first aspect or any one of the above-mentioned implementation methods of the first aspect, or execute the above-mentioned second aspect or the method provided by any one of the above-mentioned implementation methods of the second aspect.

[0052] In a ninth aspect, a communication system is provided, comprising the terminal device and network device described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] FIG1 is a schematic diagram of a communication system 100 provided in an embodiment of the present application.

[0054] FIG2 is a schematic diagram of time-frequency division of a typical SBFD scheme.

[0055] FIG3 is a schematic diagram of PUSCH repetition type B transmission.

[0056] FIG4 is a schematic diagram of the configuration of SBFD dedicated uplink and downlink time slots.

[0057] FIG5 is a schematic diagram of association relationships between the first SRS resource set and the second SRS resource set and K repetitions obtained based on different SRS resource set mapping patterns.

[0058] FIG6 is a schematic diagram of TRP1 and TRP2 receiving PUSCHs associated with different SRS resource sets in an mTRP scenario.

[0059] FIG7 is a schematic flowchart of an uplink transmission method 700 proposed in this application.

[0060] FIG8 is a schematic diagram of transmitting a first signal in corresponding time units based on transmission mode 1 and transmission mode 2.

[0061] FIG9 is a schematic block diagram of a communication device 900 provided in an embodiment of the present application.

[0062] FIG10 is a schematic block diagram of a communication device 1000 provided in an embodiment of the present application. DETAILED DESCRIPTION

[0063] The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings.

[0064] Before introducing the embodiments of the present application, the following points are first explained.

[0065] First, in this application, unless otherwise specified or there is a logical conflict, the terms and / or descriptions between different embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form new embodiments based on their internal logical relationships.

[0066] It can be understood that some optional features in the embodiments of the present application may not depend on other features in certain scenarios, and may also be combined with other features in certain scenarios, without limitation.

[0067] It can be understood that the solutions in the embodiments of this application can be used in combination, and the explanations or descriptions of each term, similar operations or steps appearing in the embodiments can be referenced or explained with each other in each embodiment, and this application does not limit this.

[0068] Second, in this application, "at least one" means one or more, and "more" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. In the text description of this application, the character " / " generally indicates that the previous and next associated objects are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b and (or) c can mean: a, or b, or c, or a and b, or a and c, or b and c, or a, b and c. Wherein a, b and c can be single or multiple, respectively.

[0069] Third, throughout this application, the terms "first," "second," and various numerical references are used for descriptive purposes only and are not intended to limit the scope of the embodiments of this application. For example, they are used to distinguish between different messages, rather than to describe a specific order or precedence. It should be understood that these references are interchangeable, where appropriate, to allow for the description of scenarios beyond the embodiments of this application.

[0070] Fourth, in this application, the terms "comprise" and "have" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units that are not explicitly listed or are inherent to these processes, methods, products or apparatuses.

[0071] Fifth, in this application, "indication" can include direct indications and indirect indications. When describing that a certain indication information indicates A, it can include that the indication information directly indicates A or indirectly indicates A, but it does not mean that the indication information must contain A.

[0072] Sixth, in this application, "sending information to XX (device)" can be understood as the destination of the information being the device. This can include sending information to the device directly or indirectly. "Receiving information from XX (device) or receiving information from XX (device)" can be understood as the source of the information being the device, which can include receiving information from the device directly or indirectly. The information may undergo necessary processing between the source and destination, such as format changes, but the destination can still understand the valid information from the source.

[0073] Seventh, the arrows or boxes shown by dotted lines in the schematic diagrams of the accompanying drawings in the specification of this application represent optional steps or optional modules.

[0074] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD) system, universal mobile telecommunication system (UMTS), worldwide interoperability for microwave access (WiMAX) communication system, fifth generation (5G) system or new radio (NR) and future communication systems, vehicle-to-other devices (V2X), where V2X may include vehicle to network (V2N), vehicle to vehicle (V2V), vehicle to infrastructure (V2I), vehicle to pedestrian (V2P), etc., long term evolution-vehicle (LTE-V), Internet of Vehicles, machine type communication (MTC), Internet of Things (IoT), etc. things, IoT), long term evolution-machine (LTE-M), machine to machine (M2M), etc.

[0075] Figure 1 is a schematic diagram of a communication system 100 provided in an embodiment of the present application. Communication system 100 includes at least one network device, such as network device 110 shown in Figure 1 ; communication system 100 may also include at least one terminal device, such as terminal device 120 and / or terminal device 130 shown in Figure 1 . Network device 110 and terminal devices 120 / 130 can communicate via wireless links and exchange information. It is understood that network devices and terminal devices may also be referred to as communication devices.

[0076] A network device is a network-side device with wireless transceiver functions. A network device may be a device in a radio access network (RAN) that provides wireless communication functions for terminal devices, and is called a RAN device. For example, the network device may be a base station, an evolved NodeB (eNodeB), a next-generation NodeB (gNB) in a 5G mobile communication system, a base station that has been subsequently evolved by 3GPP, a transmission reception point (TRP), an access node in a WiFi system, a wireless relay node, a wireless backhaul node, etc. In communication systems using different radio access technologies (RAT), the names of devices with base station functions may be different. For example, in an LTE system, it may be called an eNB or eNodeB, and in a 5G system or NR system, it may be called a gNB. This application does not limit the specific name of the base station. The network device may include one or more co-located or non-co-located transmission and reception points. For another example, the network device may include at least one of the following items: one or more centralized units (CU), one or more distributed units (DU), and one or more radio units (RU). Exemplarily, the functions of the CU may be implemented by one entity or different entities. For example, the functions of the CU are further divided, that is, the control plane and the user plane are separated and implemented through different entities, namely the control plane CU entity (i.e., CU-CP entity) and the user plane CU entity (i.e., CU-UP entity). The CU-CP entity and the CU-UP entity can be coupled with the DU to jointly complete the functions of the access network device. For example, the CU is responsible for processing non-real-time protocols and services, and implementing the functions of the radio resource control (RRC) and packet data convergence protocol (PDCP) layers. The DU is responsible for processing physical layer protocols and real-time services, and implementing the functions of the radio link control (RLC) layer, the media access control (MAC) layer, and the physical (PHY) layer. In this way, some functions of the wireless access network device can be implemented through multiple network function entities. These network function entities can be network elements in hardware devices, software functions running on dedicated hardware, or virtualized functions instantiated on a platform (e.g., a cloud platform).The network device may also include an active antenna unit (AAU). The AAU implements some physical layer processing functions, radio frequency processing, and related functions of the active antenna. Since the information of the RRC layer will eventually become the information of the PHY layer, or be converted from the information of the PHY layer, under this architecture, high-layer signaling, such as RRC layer signaling, can also be considered to be sent by the DU, or sent by the DU+AAU. It can be understood that the network device can be a device including one or more of a CU node, a DU node, and an AAU node. In addition, the CU can be divided into a network device in the access network (radio access network, RAN), or the CU can be divided into a network device in the core network (CN), and this application does not limit this. For example, in the vehicle to everything (V2X) technology, the access network device can be a road side unit (RSU). Multiple access network devices in the communication system can be base stations of the same type or different types. The base station can communicate with the terminal device, or it can communicate with the terminal device through a relay station. In the embodiments of the present application, the apparatus for implementing the network device function may be the network device itself, or may be an apparatus capable of supporting the network device in implementing the function, such as a chip system or a combination of devices or components capable of implementing the access network device function, which may be installed in the network device. In the embodiments of the present application, the chip system may be composed of a chip or may include a chip and other discrete components.

[0077] A terminal device is a user-side device with wireless transceiver capabilities. It can be a fixed device, mobile device, handheld device (such as a mobile phone), wearable device, in-vehicle device, or a wireless device built into any of the above devices (such as a communication module, modem, or chip system). Terminal devices are used to connect people, objects, and machines, and can be used in a wide range of scenarios, such as cellular communications, device-to-device (D2D) communications, vehicle-to-everything (V2X) communications, machine-to-machine / machine-type communications (M2M / MTC) communications, the Internet of Things (IoT), virtual reality (VR), augmented reality (AR), industrial control, self-driving, remote medical care, smart grids, smart furniture, smart offices, smart wearables, smart transportation, smart cities, drones, robots, and other scenarios. Exemplarily, the terminal device may be a handheld terminal in cellular communication, a communication device in D2D, an IoT device in MTC, a surveillance camera in intelligent transportation and smart cities, or a communication device on a drone, etc. The terminal device may sometimes be referred to as user equipment (UE), user terminal, user device, user unit, user station, terminal, access terminal, access station, UE station, remote station, mobile device or wireless communication device, etc. In the embodiment of the present application, the device for realizing the function of the terminal device may be the terminal device, or may be a device that can support the terminal device to realize the function, such as a chip system or a combination device or component that can realize the function of the terminal device, and the device may be installed in the terminal device.

[0078] To facilitate understanding of the embodiments of the present application, the concepts and related processes involved in the present application are first introduced.

[0079] 1. Symbol: Short for time domain symbol, also known as OFDM symbol. It should be noted that time domain symbol can also be named in combination with other multiple access methods, which is not limited in this embodiment of the application. The length of the time domain symbol can be different for different subcarrier spacings.

[0080] It should be understood that symbols within a time slot may include three types: downlink symbols, uplink symbols, and flexible symbols. Uplink symbols can only be used for uplink transmission, while downlink symbols can only be used for downlink transmission. Flexible symbols have no fixed transmission direction and can be used for uplink or downlink transmission based on control signaling. The symbols in a time slot can be all downlink symbols, all uplink symbols, all flexible symbols, or a mixture of these types.

[0081] 2. Time unit: A time unit may be a time slot, a symbol, a subframe, a half-frame, a frame, a mini-subframe, a mini-time slot, a transmission occasion (TO), or a nominal repetition, which is not limited in this application.

[0082] It can be understood that for PUSCH repetition type A, TBoMS PUSCH, or TBoMS PUSCH repetition, a transmission opportunity is defined as L consecutive symbols starting from the start symbol S in one of the one or more time slots allocated for PUSCH repetition type A, TBoMS PUSCH, or TBoMS PUSCH repetition, where the start symbol S, the symbol length L, and the first time slot and the number of time slots in the one or more allocated time slots are configured by the network device. Alternatively, it can be understood that a transmission opportunity is defined as all symbols allocated for PUSCH transmission in one time slot. For PUSCH repetition type B, a transmission opportunity is defined as a nominal repetition. PUSCH repetition type A and PUSCH repetition type B will be described later and will not be elaborated here.

[0083] 3. SBFD: In the SBFD scheme, a carrier is divided into multiple overlapping or non-overlapping subbands, and the transmission directions of different subbands can be different, that is, a carrier includes a non-overlapping first subband and a second subband, and the transmission directions of the first subband and the second subband are different. It should be noted that the first subband and the second subband refer to two types of subbands with different transmission directions, and does not mean that a carrier contains only two subbands. For example, a carrier includes subband #1 and subband #2, wherein the transmission directions of subband #1 and subband #2 are different. Alternatively, a carrier includes subband #1, subband #2 and subband #3, wherein the transmission directions of subband #1 and subband #3 are the same, and the transmission directions of subband #1 and subband #2 are different.

[0084] In this application, SBFD includes subband overlapping full duplex and subband non-overlapping full duplex.

[0085] 4. Subband: A subband is a portion of a frequency band within a carrier, i.e., one or more consecutive physical resource blocks (PRBs) in the frequency domain. In this application, a subband can also be understood as a frequency domain resource. It is understood that an SBFD subband consists of one resource block (RB) or a group of consecutive RBs in the same transmission direction.

[0086] 5. SBFD time unit: The frequency resources within the SBFD time unit include uplink frequency resources and downlink frequency resources. Uplink frequency resources are used for uplink transmission, while downlink frequency resources are used for downlink transmission. It is understood that the SBFD time unit includes subbands for uplink and downlink transmission, and the gNB can use the subbands within the SBFD time unit for SBFD operation.

[0087] Figure 2 is a schematic diagram of the time-frequency partitioning of a typical SBFD solution. The horizontal axis represents the time domain, and the vertical axis represents the frequency domain. The two rectangles filled with left slashes in Figure 2 represent a set of time-frequency resources for downlink transmission, while the rectangle filled with vertical bars represents a set of time-frequency resources for uplink transmission. The time domain resources occupied by these three time-frequency resources are called SBFD time units.

[0088] 6. Non-SBFD time unit: The frequency resource corresponding to each of all the symbols contained in the non-SBFD time unit is used only for downlink transmission or only for uplink transmission. As an example, all the symbols in the non-SBFD time unit are downlink symbols, or all the symbols in the non-SBFD time unit are uplink symbols, or all the symbols in the non-SBFD time unit are flexible symbols, or some of the symbols in the non-full-duplex time unit are downlink symbols and some are uplink symbols, or some of the symbols in the non-full-duplex time unit are downlink symbols, some are uplink symbols, and some are flexible symbols, or some of the symbols in the non-full-duplex time unit are downlink symbols and some are flexible symbols, or some of the symbols in the non-full-duplex time unit are uplink symbols and some are flexible symbols. For example, the rectangular blocks filled with right slashes in Figure 2 represent a group of time-frequency resources used for uplink transmission. The time slots within the time domain range occupied by them are called uplink time units. The transmission direction of all frequency resources in these time units is uplink. These time units can be called non-SBFD time slots.

[0089] 7. Time unit type: includes SBFD time units and non-SBFD time units. Non-SBFD time units include uplink time units, downlink time units, and SBFD time units. The frequency resources corresponding to uplink time units are used only for uplink transmission; the frequency resources corresponding to downlink time units are used only for downlink transmission. The frequency resources corresponding to SBFD time units include uplink frequency resources and downlink frequency resources, with uplink frequency resources used for uplink transmission and downlink frequency resources used for downlink transmission.

[0090] It should be understood that in the embodiment of the present application, since PUSCH cannot be sent in downlink symbols, unless otherwise specified, the non-SBFD time unit in the embodiment of the present application only includes the uplink time unit and the flexible time unit.

[0091] 8. Multi-slot PUSCH: This includes PUSCH repetition type A, PUSCH repetition type B, and transport block processing over multiple slots (TBoMS PUSCH). The following briefly describes PUSCH repetition type A and PUSCH repetition type B.

[0092] For PUSCH repetition type A, first, the network device indicates the number K of PUSCH repetitions and a starting time slot. The terminal device traverses the time slots after the starting time slot based on the available time slot counting method. If the traversed time slots meet the inclusion conditions of the counting method of the currently used time slots, they are included in the time slot count of PUSCH repetition type A until the number of included time slots reaches K. After that, the terminal device can send uplink signals on the time slots that can be used to transmit uplink signals in the determined K time slots. For example, the time slot counting methods that can be used by the terminal device include the available slot counting method and the physical slot counting method.

[0093] For PUSCH repetition type B, first, the network device can indicate multiple nominal repetition time domain resources in PUSCH repetition type B to the terminal device, and the multiple nominal repetition time domain resources are continuous in the time domain and have equal lengths. Specifically, the network device can indicate the number K of nominal PUSCH repetitions, the starting symbol S of the first nominal repetition time domain resource, and the number L of symbols contained in a nominal repetition to the terminal device, and the number L of symbols contained in each nominal repetition time domain resource is the same, where 0≤S≤13,1≤L≤14, and S+L>14 can be achieved. Starting from the second nominal repetition, the starting symbol of the nominal repetition time domain resource is the next symbol of the end symbol of the previous nominal repetition time domain resource. Secondly, the terminal device determines the invalid symbols in each nominal repetition time domain resource, and the remaining symbols can be considered as potential valid symbols. Afterwards, if the number of consecutive potentially valid symbols (here consecutive refers to the longest consecutive potentially valid symbols) in a time slot in a nominal repetition is greater than 0, an actual repetition can be mapped, and the time domain resources of a nominal repetition can contain one or more actual repetition time domain resources. The terminal device does not send PUSCH repetitions on the actual repetition of a single symbol unless the nominal repetition duration L indicated by the base station is a single symbol.

[0094] As shown in Figure 3, Figure 3 is a schematic diagram of PUSCH repetition type B transmission. As shown in Figure 3, the starting symbol S of the first nominal repetition time domain resource is shown in the figure, K = 4, L = 6 symbols, that is, the network device indicates 4 nominal repetitions to the terminal device, each nominal repetition includes 6 symbols, assuming that the invalid symbols in each nominal repetition time domain resource are determined as shown in Figure 3, and the remaining symbols except the invalid symbols are potentially valid symbols, where the potentially valid symbols are all uplink symbols. Then, as shown in Figure 3, the starting symbol S of the first nominal repetition time domain resource is the first symbol from left to right in the figure. Therefore, the starting symbol of the first nominal repetition is the first symbol in the figure, and the ending symbol is the 6th symbol in the figure. The starting symbol of the second nominal repetition is the next symbol (i.e., the 7th symbol) after the ending symbol of the first nominal repetition, and the ending symbol is the 12th symbol in the figure. The starting symbol and ending symbol of the third and fourth nominal repetitions are similar, and will not be described here one by one.

[0095] 9. SBFD dedicated uplink and downlink timeslot configuration

[0096] According to the different configurations of the uplink subband and downlink subband in a time slot, SBFD dedicated uplink and downlink time slot configurations may include the following three types: XXXXX, XXXXU and DXXXU, where D represents the downlink time unit, all symbols in the downlink time unit are downlink symbols, and the uplink subband cannot be configured on the downlink symbol; U represents the uplink time unit, all symbols in the uplink time unit are uplink symbols, and the downlink subband cannot be configured on the uplink symbol; X represents the SBFD time unit, and each symbol in the SBFD time unit can be configured with at least one uplink subband and at least one downlink subband at the same time.

[0097] It should be understood that the number of Xs in XXXXX, XXXXU, and DXXXU is only an example description, and the number of Xs can be configured by the network device according to actual conditions. In addition, XXXXX, XXXXU, and DXXXU can be configured through cell-level uplink and downlink time slot configuration signaling and UE-level uplink and downlink time slot configuration signaling.

[0098] As shown in Figure 4, Figure 4 is a schematic diagram of the SBFD dedicated uplink and downlink time slot configuration. Figure 4(a) is a possible example of XXXXX, Figure 4(b) is a possible example of XXXXU, and Figure 4(c) is a possible example of DXXXU. In this configuration method, the UE is not visible to the uplink and downlink subbands configured on the flexible symbols, that is, the UE does not know the frequency resource locations of the uplink and downlink subbands. Therefore, if the UE determines to perform downlink transmission on the flexible symbols, the gNB should ensure that the UE is instructed to perform downlink reception only in the downlink subbands configured with the flexible symbols. If the UE determines to perform uplink transmission on the flexible symbols, the gNB should ensure that the UE is instructed to perform uplink transmission only in the uplink subbands configured with the flexible symbols.

[0099] Currently, in the multiple transmission and reception point (mTRP) scenario, when the protocol supports the UE sending PUSCH repetition type A, different repetitions can use different spatial parameters. Similarly, when the protocol supports the UE sending PUSCH repetition type B, different nominal repetitions use different spatial parameters. For ease of description, the following specific description is taken as an example of PUSCH repetition type A. It should be noted that in steps 1 to 5 below, SBFD is not involved when the terminal device sends PUSCH repetition type A.

[0100] Step 1: The network device configures two sounding reference signal (SRS) resource sets (SRS resource sets) for the terminal device through high-layer signaling (such as RRC), where each SRS resource set includes at least one SRS resource (SRS resource), and the number of SRS resources included in the two SRS resource sets is the same.

[0101] For example, the two SRS resource sets include a first SRS resource set and a second SRS resource set.

[0102] Step 2: The network device schedules the terminal device to send PUSCH repetition type A through downlink control information (DCI). The DCI includes the following parameters.

[0103] (1) An SRS resource set indicator, which indicates the relationship between K repetitions of PUSCH repetition type A and two SRS resource sets, where K is the number of PUSCH repetitions and each repetition corresponds to one time slot, i.e., K repetitions correspond to K time slots. For example, this indicator occupies 2 bits. If the number of transmission layers for PUSCH repetition type A is limited to one, the following examples illustrate the specific meanings of different values ​​for the 2 bits.

[0104] If the 2 bits are "00", the first SRS resource set is associated with K time slots, as shown in FIG5(a). For example, FIG5 takes K=4 as an example.

[0105] If the two bits are "01", the second SRS resource set is associated with K time slots, as shown in FIG5(b).

[0106] It should be noted that this application does not limit the method of distinguishing the first SRS resource set from the second SRS resource set. For example, the two SRS resource sets have different IDs, where the resource set with the smaller ID is the first SRS resource set and the other is the second SRS resource set, or vice versa.

[0107] If the 2 bits are "10", the association relationship between the first SRS resource set and the second SRS resource set and the K time slots is determined according to the following method.

[0108] a) When K=2, the first SRS resource set is associated with the first time slot of the K time slots and the second SRS resource set is associated with the second time slot of the K time slots.

[0109] b) When K>2 and the high-level signaling configures a cyclic mapping mode (for example, cyclic Mapping is enabled in the PUSCH configuration of the RRC), the first SRS resource set is associated with the first time slot of the K time slots and the second SRS resource set is associated with the second time slot of the K time slots, and the first SRS resource set and the second SRS resource set are associated with the remaining time slots of the K time slots based on the same SRS resource set mapping pattern, as shown in (c) of Figure 5.

[0110] c) When K>2 and the high-level signaling is configured with a sequential mapping mode (for example, sequential Mapping is enabled in the PUSCH configuration of RRC), the first SRS resource set is associated with the first time slot and the second time slot in the K time slots, and the second SRS resource set is associated with the third time slot and the fourth time slot in the K time slots. The same SRS resource set mapping pattern continues to be applied to the remaining time slots in the K time slots, as shown in (d) of Figure 5.

[0111] If the two bits are "11," then the first SRS resource set in a), b), and c) where the two bits are "10" is replaced with the second SRS resource set, and the second SRS resource set is replaced with the first SRS resource set. This is not repeated here. The corresponding meanings of FIG5(e) and FIG5(f) are not repeated here.

[0112] (2) If the uplink transmission is codebook-based uplink transmission, the DCI further includes two SRS resource indicators (SRIs) and two precoding information and layer number information.

[0113] Among them, the two SRIs include a first SRI and a second SRI, and the two precoding and layer information include first precoding and layer information and second precoding and layer information, wherein the first SRI and the first precoding and layer information are related to the first SRS resource set, and the second SRI and the second precoding and layer information are related to the second SRS resource set.

[0114] Specifically, the first SRI indicates the first SRS resource in the first SRS resource set, the beam associated with the reused first SRS resource associated with the first SRS resource set, and the first precoding and layer number information indicates the number of layers and precoding reused in the associated first SRS resource set. Similarly, the second SRI indicates the second SRS resource in the second SRS resource set, the beam associated with the reused second SRS resource associated with the second SRS resource set, and the second precoding and layer number information indicates the number of layers and precoding reused in the associated second SRS resource set.

[0115] Currently, the protocol stipulates that the first precoding and layer number information and the second precoding and layer number information indicate the same number of layers.

[0116] (3) If the uplink transmission is non-codebook based uplink transmission, the DCI also includes two SRIs.

[0117] The two SRIs include a first SRI and a second SRI, wherein the first SRI is associated with the first SRS resource set and the second SRI is associated with the second SRS resource set. It should be noted that the first SRI and the second SRI in (2) and (3) have different meanings.

[0118] Specifically, the first SRI indicates the first SRS resource subset, and the time slot associated with the first SRS resource set uses the beam, number of layers, and precoding associated with the first SRS resource subset. The first SRS resource subset includes at least one SRS resource in the first SRS resource set. For non-codebook uplink transmission, the number of SRS resources included in the first SRS resource subset implicitly indicates the number of layers, and the spatial domain filter associated with the first SRS resource subset also includes the reused beam and precoding information associated with the first SRS resource set.

[0119] Similarly, the second SRI indicates the second SRS resource subset in the second SRS resource set, and the time slot associated with the second SRS resource set uses the beam, number of layers, and precoding associated with the second SRS resource subset. The second SRS resource subset includes at least one SRS resource in the second SRS resource set. For non-codebook uplink transmission, the number of SRS resources included in the second SRS resource subset implicitly indicates the number of layers, and the spatial domain filter associated with the second SRS resource also includes the beam and precoding information used by the time slot associated with the second SRS resource set.

[0120] Currently, the protocol stipulates that the number of layers indicated by the first SRI and the second SRI is the same, that is, the number of SRS resources included in the first SRS resource subset and the second SRS resource subset is the same.

[0121] Step 3: The terminal device determines the association between the two SRS resource sets and K time slots based on the SRS resource set indication information in the DCI described in step 2. For a detailed description, please refer to the description of the SRS resource set indication information in parameter (1) in step 2, which will not be repeated here.

[0122] Step 4: The terminal device determines the beam and precoding used to send PUSCH repetition type A.

[0123] If the uplink transmission is codebook-based uplink transmission, the terminal device can determine the beam and precoding used for sending PUSCH reuse in K time slots based on the description in parameter (2) included in the DCI in step 1.

[0124] If the uplink transmission is non-codebook based uplink transmission, the terminal device can determine the beam and precoding used to send PUSCH on K time slots based on the description in parameter (3) included in the DCI in step 1, which will not be repeated here.

[0125] Step 5: The terminal device sends K repetitions of PUSCH repetition type A over K time slots based on the corresponding beam and precoding. Correspondingly, the network device receives PUSCH repetition type A from the terminal device.

[0126] For example, as shown in FIG6 , in the mTRP scenario, the network device may include TRP1 and TRP2, wherein TRP1 may receive PUSCH repetitions on a time slot associated with a first SRS resource set, and TRP2 may receive PUSCH repetitions on a time slot associated with a second SRS resource set.

[0127] It can be understood that if PUSCH repetition type A in the above steps is replaced with PUSCH repetition type B, then the number of transmission layers is also limited to one layer. It is only necessary to modify the "time slot" in the above description to "nominal repetition", which is not repeated here.

[0128] Currently, due to various reasons, the channel and interference environments corresponding to SBFD time units and uplink time units (or flexible time units) are different. The following uses SBFD time units and uplink time units as examples to explain these reasons. These reasons may include:

[0129] 1) The network device has different receiving antennas in the SBFD time unit and the uplink time unit, resulting in different uplink channels in the SBFD time unit and the uplink channel in the uplink time unit.

[0130] For example, the number of receiving antenna ports in the SBFD time unit is half of the number of receiving antenna ports in the uplink time unit, because the other half of the antenna ports are used for downlink transmission.

[0131] For example, the receiving antenna panel on the SBFD time unit is different from the receiving antenna panel on the uplink time unit.

[0132] 2) Compared with uplink time units, in SBFD time units, network devices can send downlink signals while receiving uplink signals. Therefore, network devices in SBFD time units will suffer from severe self-interference (SI) and cross-link interference (CLI), resulting in a different interference environment in SBFD time units than in uplink time units.

[0133] Therefore, the optimal spatial parameters used to transmit uplink signals in SBFD time units and uplink time units are different. Spatial parameters include: beam, precoder, and number of layers. In other words, in SBFD duplex mode, terminal devices must be able to transmit uplink signals using different spatial parameters in SBFD time units and uplink time units. In particular, when transmitting multi-slot PUSCH, a transport block (TB) is sent over multiple time units.

[0134] As can be seen from Figure 3, SBFD time slots and non-SBFD time slots can be flexibly configured, for example, configured as XXXXU and DXXXU, etc. If the four SRS resource set mapping patterns corresponding to (c), (d), (e) and (f) in Figure 5 are associated, these four SRS resource set mapping patterns cannot guarantee that different SRS resource sets are associated with SBFD time slots and non-SBFD time slots respectively, that is, it cannot guarantee that different spatial domain parameters are used to send PUSCH repetitions in SBFD time slots and non-SBFD time slots.

[0135] In view of this, the present application proposes an uplink transmission method that can effectively solve the above-mentioned technical problems. The method proposed in the present application is described in detail below. The processing described below as being performed by a single execution entity can also be divided into multiple execution entities, and these execution entities can be logically and / or physically separated. For example, the processing performed by the network device can be divided into at least one of the CU, DU, and RU.

[0136] As shown in Figure 7, Figure 7 is a schematic flow chart of an uplink transmission method 700 proposed in this application. The method includes the following steps.

[0137] S710: The network device sends a first signaling to the terminal device, where the first signaling instructs the terminal device to send a first signal, wherein the first signal is carried on a PUSCH. Correspondingly, the terminal device receives the first signaling from the network device.

[0138] For example, the first signaling is downlink control information (DCI).

[0139] Illustratively, the first signal is carried on PUSCH repetition type A, or PUSCH repetition type B, or TBoMS PUSCH, or TBoMS PUSCH repetition.

[0140] S720, the terminal device determines that the association relationship between the first SRS resource set and the second SRS resource set and the SBFD time unit and the non-SBFD time unit is the first association relationship or the second association relationship, wherein the first SRS resource set and the second SRS resource set are two SRS resource sets configured by the network device for the terminal device.

[0141] The first association relationship is that the first SRS resource set is associated with the SBFD time unit and the second SRS resource set is associated with the non-SBFD time unit; the second association relationship is that the first SRS resource set is associated with the non-SBFD time unit and the second SRS resource set is associated with the SBFD time unit.

[0142] It should be noted that for PUSCH repetition type A, TBoMS PUSCH, or TBoMS PUSCH repetition, the time unit in this application can be understood as a time slot (or transmission opportunity, or repetition); for PUSCH repetition type B, the time unit in this application can be understood as a nominal repetition (or transmission opportunity).

[0143] Optionally, the non-SBFD time unit includes an uplink time unit and a flexible time unit. It can be understood that the solution of the embodiment of the present application is applicable to uplink transmission, and uplink transmission cannot be performed on the downlink time unit. Therefore, the non-SBFD time unit does not include the downlink time unit.

[0144] Optionally, the method further includes: the network device sending a second signaling to the terminal device, the second signaling including information #1, where the information #1 is used to configure a first SRS resource set and a second SRS resource set for the terminal device, wherein each SRS resource set includes at least one SRS resource. Correspondingly, the terminal device receives the second signaling from the network device.

[0145] For example, the second signaling is RRC signaling.

[0146] Optionally, the number of SRS resources included in the first SRS resource subset is equal to the number of SRS resources included in the second SRS resource subset.

[0147] It should be noted that the present application does not limit the method for distinguishing the first SRS resource set from the second SRS resource set. For example, the two SRS resource sets have different IDs, where the resource set with the smaller ID is the first SRS resource set and the other is the second SRS resource set.

[0148] Several specific implementations of the terminal device determining that the association relationship between the first SRS resource set and the second SRS resource set and the SBFD time unit and the non-SBFD time unit is the first association relationship or the second association relationship are given below.

[0149] Implementation method 1: The protocol predefines the association relationship between the first SRS resource set and the second SRS resource set and the SBFD time unit and the non-SBFD time unit.

[0150] For example, the protocol predefines that the first SRS resource set is associated with the SBFD time unit and the second SRS resource set is associated with the non-SBFD time unit, then the terminal device determines that the association relationship between the first SRS resource set and the second SRS resource set and the SBFD time unit and the non-SBFD time unit is the first association relationship.

[0151] For example, the protocol predefines that the first SRS resource set is associated with the non-SBFD time unit and the second SRS resource set is associated with the SBFD time unit, then the terminal device determines that the association relationship between the first SRS resource set and the second SRS resource set and the SBFD time unit and the non-SBFD time unit is the second association relationship.

[0152] Implementation method 2: The terminal device determines the association relationship between the first SRS resource set and the second SRS resource set and the SBFD time unit and the non-SBFD time unit based on the instruction of the network device.

[0153] Optionally, based on this implementation, the method further includes: the network device sends first information to the terminal device, where the first information indicates a first association relationship or a second association relationship. Correspondingly, the terminal device receives the first information and determines, based on the first information, an association relationship between the first SRS resource set and the second SRS resource set and the SBFD time unit and the non-SBFD time unit. Specifically, if the first information indicates a first association relationship, the association relationship is determined to be the first association relationship. Similarly, if the first information indicates a second association relationship, the association relationship is determined to be the second association relationship.

[0154] Optionally, when the first information is a first value, it indicates a first association relationship, and when the second information is a second value, it indicates a second association relationship, wherein the first value and the second value are different. For example, if the first information is 1-bit information, the first value can be "0" and the second value can be "1", or vice versa, which is not further described here.

[0155] Optionally, the first information is carried in the first signaling, and the first signaling is DCI. For example, the first information can be carried in the SRS resource set indication information field of the first signaling. It can be understood that since the SRS resource set mapping pattern corresponding to Figures 5 (a) to 5 (f) above is based on the SRS resource set indication information field in the DCI, when the SBFD time unit is introduced, it is not necessary to indicate the SRS resource set mapping pattern corresponding to Figures 5 (a) to 5 (f) through the indication information. Therefore, 1 bit in the SRS resource set indication information field can be redefined / interpreted to indicate the first information.

[0156] Optionally, the first information is carried in the second signaling, and the second signaling is RRC signaling.

[0157] Implementation method three: The terminal device determines the association relationship between the first SRS resource set and the second SRS resource set and the SBFD time unit and the non-SBFD time unit based on the fields in the first SRS resource set and / or the second SRS resource set. In this implementation method, both SRS resource sets may include fields for determining the association relationship, or only one of the SRS resource sets may include fields for determining the association relationship, as illustrated below.

[0158] Example 1: The first SRS resource set includes a first field, and the second SRS resource includes a second field. The first field indicates that the first SRS resource set is associated with an SBFD time unit or a non-SBFD time unit, and the second field indicates that the second SRS resource set is associated with an SBFD time unit or a non-SBFD time unit. The time unit types associated with the first SRS resource set and the second SRS resource set are different.

[0159] For example, when the value of the first field is a first value, it indicates that the first SRS resource set is associated with the SBFD time unit, and when the value of the first field is a second value, it indicates that the first SRS resource set is associated with the non-SBFD time unit. Similarly, when the value of the second field is a first value, it indicates that the second SRS resource set is associated with the SBFD time unit, and when the value of the second field is a second value, it indicates that the second SRS resource set is associated with the non-SBFD time unit. For example, if the first field is a 1-bit field, the first value can be "0" and the second value can be "1", or the first value can be "1" and the second value can be "0".

[0160] It can be understood that, since the time unit types associated with the first SRS resource set and the second SRS resource set are different, the values ​​of the first field of the first SRS resource set and the second field of the second SRS resource set need to be different, or, it is not expected that the values ​​of the first field of the first SRS resource set and the second field of the second SRS resource set are the same. For example, the value of the first field is the first value, and the value of the second field is the second value, then the terminal device determines that the first SRS resource set is associated with the SBFD time unit based on the first value, and determines that the second SRS resource set is associated with the non-SBFD time unit based on the second value, and then determines that the association relationship is the first association relationship. For another example, the value of the first field is the second value, and the value of the second field is the first value, then the terminal device determines that the association relationship is the second association relationship, and the specific determination process is not repeated here.

[0161] Example 2: The first SRS resource set includes the first field or the second SRS resource includes the second field. For the description of the first field and the second field, please refer to the description in Example 1. The time unit types associated with the first SRS resource set and the second SRS resource set are different.

[0162] For example, the first SRS resource set includes a first field, indicating that the first SRS resource set is associated with the SBFD time unit, and the second SRS resource set does not include a second field, indicating that the second SRS resource set is associated with the non-SBFD time unit, then the terminal device determines that the association relationship is the first association relationship; similarly, the first SRS resource set does not include the first field, indicating that the first SRS resource set is associated with the non-SBFD time unit, and the second SRS resource set includes a second field, indicating that the second SRS resource set is associated with the SBFD time unit, then the terminal device determines that the association relationship is the second association relationship.

[0163] For example, the first SRS resource set includes a first field, indicating that the first SRS resource set is associated with a non-SBFD time unit, and the second SRS resource set does not include a second field, indicating that the second SRS resource set is associated with a SBFD time unit, then the terminal device determines that the association relationship is the second association relationship; similarly, the first SRS resource set does not include the first field, indicating that the first SRS resource set is associated with a SBFD time unit, and the second SRS resource set includes a second field, indicating that the second SRS resource set is associated with a non-SBFD time unit, then the terminal device determines that the association relationship is the first association relationship.

[0164] It should be understood that the above examples do not limit the values ​​of the first field and the second field.

[0165] It can be understood that it is not expected that the first field in the first SRS resource set and the second field in the second SRS resource set exist at the same time, nor is it expected that the first field in the first SRS resource set and the second field in the second SRS resource set do not exist at the same time.

[0166] Implementation method 4: define one of the first SRS resource set and the second SRS resource set as an SRS resource set dedicated to SBFD, which is associated only with SBFD time units, and define the other SRS resource set as an SRS resource set not dedicated to SBFD, which is associated only with non-SBFD time units.

[0167] It should be noted that the names of the SBFD-specific SRS resource set and the non-SBFD-specific SRS resource set in this implementation are just examples, which are only for the convenience of distinguishing descriptions. This application does not exclude other names for the two SRS resources in the future.

[0168] For example, the two SRS resource sets can be distinguished by different signaling names. Currently, the signaling name of the SRS resource set in high-level signaling is SRS-ResourceSet, so the signaling name of the SRS resource set dedicated to SBFD needs to be different from it. For example, the signaling name of the SRS resource set dedicated to SBFD can be SRS-ResourceSet-SBFD.

[0169] For example, if the above information #1 configures the first SRS resource set as an SRS resource set dedicated to SBFD and the second SRS resource set as an SRS resource set dedicated to non-SBFD, the terminal device can know that the first SRS resource set is associated with the SBFD time unit and the second SRS resource set is associated with the non-SBFD time unit, thereby determining that the association relationship is the first association relationship. For another example, if the information #1 configures the first SRS resource set as an SRS resource set dedicated to non-SBFD and the second SRS resource set as an SRS resource set dedicated to SBFD, the terminal device can know that the first SRS resource set is associated with the non-SBFD time unit and the second SRS resource set is associated with the SBFD time unit, thereby determining that the association relationship is the second association relationship.

[0170] It can be understood that it is not expected that both the first SRS resource set and the second SRS resource set are SRS resource sets not dedicated to SBFD, nor is it expected that both the first SRS resource set and the second SRS resource set are SRS resource sets dedicated to SBFD.

[0171] It can also be understood that when information #1 is carried in the second signaling, and the second signaling is RRC signaling, the above-mentioned implementation method three and implementation method four can be regarded as being based on RRC configuration.

[0172] S730: The terminal device transmits a first signal in an SBFD time unit based on an SRS resource set associated with the SBFD time unit, and / or transmits a first signal in a non-SBFD time unit based on an SRS resource set associated with the non-SBFD time unit. Correspondingly, the network device receives the first signal in the SBFD time unit, and / or receives the first signal in the non-SBFD time unit.

[0173] It can be understood that the terminal device sends the first signal based on the SRS resource set associated with the SBFD time unit on the SBFD time unit, and / or sends the first signal based on the SRS resource set associated with the non-SBFD time unit on the non-SBFD time unit. It can also be replaced by describing that the terminal device sends the first signal based on the first SRS resource set on the time unit associated with the first SRS resource set, and / or sends the first signal based on the second SRS resource set on the time unit associated with the second SRS resource set.

[0174] Based on the previous description, it can be known that the first SRS resource set and the second SRS resource set can be used to determine the spatial domain parameters used by the terminal device to send the uplink signal (i.e., the first signal), including beam, precoding and number of layers, etc. Therefore, sending the first signal based on the corresponding SRS resource set here can also be understood as determining the spatial domain parameters for sending the first signal based on the corresponding SRS resource set, and then sending the first signal based on the determined spatial domain parameters.

[0175] The following describes how to determine the spatial domain parameters used for sending the first signal based on the SRS resource set, using uplink transmission as codebook-based uplink transmission and uplink transmission as non-codebook-based uplink transmission.

[0176] (1) Uplink transmission is codebook-based uplink transmission.

[0177] Optionally, the first signaling includes a first SRI and a second SRI, wherein the first SRI indicates a first SRS resource in the first SRS resource set, and the second SRI indicates a second SRS resource in the second SRS resource set.

[0178] Optionally, the first signaling includes first layer number information, first precoding information, second layer number information and second precoding information, wherein the first layer number information and the first precoding information are related to the first SRS resource set, and the second layer number information and the second precoding information are related to the second SRS resource set.

[0179] Optionally, the second layer number is equal to the first layer number. Therefore, the first layer number information and the second layer number information can indicate only one, and the terminal device can implicitly determine the other layer number information based on the above equal relationship.

[0180] Specifically, if the first SRS resource set is associated with the SBFD time unit and the second SRS resource set is associated with the non-SBFD time unit (that is, the association relationship is the first association relationship), then in the SBFD time unit, the terminal device uses the beam associated with the first SRS resource, the first layer number information and the first precoding information to send the first signal; in the non-SBFD time unit, the terminal device uses the beam associated with the second SRS resource, the second layer number and the second precoding to send the first signal.

[0181] Similarly, if the first SRS resource set is associated with a non-SBFD time unit and the second SRS resource set is associated with a SBFD time unit (i.e., the association relationship is the second association relationship), then in the non-SBFD time unit, the terminal device uses the beam, first layer number information and first precoding information associated with the first SRS resource to send the first signal; in the SBFD time unit, the terminal device uses the beam, second layer number and second precoding associated with the second SRS resource to send the first signal.

[0182] (2) The uplink transmission is non-codebook based.

[0183] Optionally, the first signaling includes a first SRI and a second SRI, wherein the first SRI indicates a first SRS resource subset in the first SRS resource set, and the first SRS resource subset includes at least one SRS resource in the first SRS resource set; and the second SRI indicates a second SRS resource subset in the second SRS resource set, and the second SRS resource subset includes at least one SRS resource in the second SRS resource set.

[0184] It can be understood that, for non-codebook uplink transmission, the number of SRS resources included in the SRS resource subset implicitly indicates the number of layers.

[0185] Optionally, the number of SRS resources included in the first SRS resource subset is equal to the number of SRS resources included in the second SRS resource subset.

[0186] Specifically, if the first SRS resource set is associated with the SBFD time unit and the second SRS resource set is associated with the non-SBFD time unit (that is, the association relationship is the first association relationship), then in the SBFD time unit, the terminal device uses the beam, number of layers and precoding associated with the first SRS resource subset to send the first signal; in the non-SBFD time unit, the terminal device uses the beam, number of layers and precoding associated with the second SRS resource subset to send the first signal.

[0187] Similarly, if the first SRS resource set is associated with a non-SBFD time unit and the second SRS resource set is associated with a SBFD time unit (i.e., the association relationship is the second association relationship), then in the non-SBFD time unit, the terminal device uses the beam, number of layers and precoding associated with the first SRS resource subset to send the first signal; in the SBFD time unit, the terminal device uses the beam, number of layers and precoding associated with the second SRS resource subset to send the first signal.

[0188] Optionally, the second signaling includes third information, the third information indicating a transmission mode in which the terminal device sends the first signal, and the transmission mode indicated by the third information is one of transmission modes 1 to 3. The three transmission modes are described in detail below.

[0189] 1) Transmission mode 1: The terminal device can only send the first signal in the same type of time unit.

[0190] It can be understood that if the third information indicates that the transmission mode for the terminal device to send the first signal is transmission mode 1, then the terminal device sends the first signal only in the SBFD time unit, or the terminal device sends the first signal only in the non-SBFD time unit. For example, the terminal device determines to send the first signal on the first time unit set based on transmission mode 1, and the time units included in the first time unit set are all SBFD time units, or the time units included in the first time unit set are all uplink time units and / or flexible time units. Regarding whether the first time unit set determined by the terminal device is all SBFD time units or all non-SBFD time units, a detailed description will be given below with examples and will not be elaborated here.

[0191] It is also understood that the terminal device can send different uplink signals on different types of time units, which is not limited here. For example, the network device also instructs the terminal device to send a second signal, and the second signal is also carried on the PUSCH. At the same time, the network device also instructs the terminal device to send the second signal in transmission mode 1. Then, for example, the terminal device can send the first signal on the SBFD time unit and send the second signal on the non-SBFD time unit, or vice versa. This application does not limit this.

[0192] It can also be understood that the first signal is carried on the first TB, and the second signal is carried on the second TB, wherein the first TB and the second TB are different TBs.

[0193] 2) Transmission mode 2: The terminal device can send the first signal in different types of time units.

[0194] It can be understood that the third information indicates that the transmission mode for the terminal device to send the first signal is transmission mode 2, then the terminal device can send the first signal across (across) SBFD time units and non-SBFD time units (or across different time unit types). For example, the terminal device determines to send the first signal on the first time unit set based on transmission mode 2, and the first time unit set includes 10 time units, namely XXXUUXXXXU, where X is the SBFD time unit and U is the uplink time unit. Among them, the types of the third time unit and the fourth time unit are different, then it can be considered that the terminal device sends the first signal across the SBFD time unit and the non-SBFD time unit. Similarly, the types of the fifth time unit and the sixth time unit are different, and the types of the ninth time unit and the tenth time unit are different, which can also be considered as sending the first signal across the SBFD time unit and the non-SBFD time unit.

[0195] 3) Transmission mode 3: Based on the second information, determine whether to send the first signal in transmission mode 1 or transmission mode 2.

[0196] Optionally, the method further includes: the network device sending second information to the terminal device, where the second information indicates that the first signal is transmitted in transmission mode 1 or transmission mode 2. Correspondingly, the terminal device receives the second information from the network device.

[0197] It can be understood that the network device can semi-statically configure the three transmission modes through the third information. Under the transmission mode 3, the transmission mode 1 and the transmission mode 2 can be dynamically switched through the second information.

[0198] For example, the second information is carried in the SRS resource set indication information of the first signaling, and the first signaling is DCI. It can be understood that this implementation method can achieve dynamic switching between the two transmission modes by reinterpreting the current SRS resource set indication information field without increasing the DCI length, thereby improving the flexibility of signal transmission.

[0199] As shown in Figure 8, Figure 8 is a schematic diagram of transmitting a first signal in corresponding time units based on transmission mode 1 and transmission mode 2. For example, in Figure 8, the first signal is carried in PUSCH repetition type A, and the first SRS resource set is associated with the SBFD time unit and the second SRS resource set is associated with the non-SBFD time unit (i.e., the first association relationship).

[0200] Among them, Figure 8 (a) and Figure 8 (b) are schematic diagrams of transmitting the first signal on the corresponding time unit when the third information indicates transmission mode 1, or when the third information indicates transmission mode 3 and the second information indicates transmission mode 1. For example, if the terminal device determines to transmit the first signal only on the SBFD time unit, then as shown in Figure 8 (a), the terminal device sends the PUSCH repetition of the first signal only on the SBFD time unit (i.e., the time unit associated with the first SRS resource set); if the terminal device determines to transmit the first signal only on the non-SBFD time unit, then as shown in Figure 8 (b), the terminal device sends the first signal only on the non-SBFD time unit (i.e., the time unit associated with the second SRS resource set). Figure 8 (c) shows that the third information indicates transmission mode 2, or the third information indicates transmission mode 3 and the second information indicates transmission mode 2, and the terminal device can send the first signal on the SBFD time unit and the non-SBFD time unit (i.e., the time unit associated with the two SRS resource sets).

[0201] Optionally, when the second information indicates transmission mode 1, the terminal device may be directly informed through the second information whether to transmit the first signal in an SBFD time unit or a non-SBFD time unit. Alternatively, the terminal device may be left uninformed and independently determine the time unit type for transmitting the first signal. This is illustrated below with an example.

[0202] Example 1: The second information only indicates the transmission method.

[0203] It is understandable that because the network device only instructs the first signal to be transmitted using transmission mode 1 and does not explicitly indicate whether the first signal should be transmitted in SBFD time units or non-SBFD time units, the terminal device must further determine whether the first signal should be transmitted in SBFD time units or non-SBFD time units. Several possible methods for determining whether the first signal should be transmitted in SBFD time units or non-SBFD time units are described below.

[0204] Mode 1: The terminal device determines, based on the type of the first time unit to which the first signal is allocated, the type of time unit in which to send the first signal.

[0205] Specifically, if the first time unit is an SBFD time unit, the terminal device only sends the first signal on the SBFD time unit; if the first time unit is an uplink time unit or a flexible time unit, the terminal device only sends the first signal on the uplink time unit and the flexible time unit; if the first time unit is a downlink time unit, the terminal device determines on which type of time unit to send the first signal based on the type of the first non-downlink time unit after the first time unit, which will not be repeated here.

[0206] Method 2: The terminal device determines on which type of time unit to send the first signal according to the SRS resource set associated with the first time unit allocated to the first signal.

[0207] Specifically, if the first time unit is associated with the first SRS resource set, the terminal device only sends the first signal in the time unit associated with the first SRS resource set; if the first time unit is associated with the second SRS resource set, the terminal device only sends the first signal in the time unit associated with the second SRS resource set; if the first time unit is not associated with any SRS resource set, the terminal device determines that the first time unit associated with the SRS resource set after the first time unit is time unit #1, and if the SRS resource set associated with time unit #1 is the first SRS resource set, the terminal device determines to send the first signal only in the time unit associated with the first SRS resource set. Similarly, if the SRS resource set associated with time unit #1 is the second SRS resource set, the terminal device determines to send the first signal only in the time unit associated with the second SRS resource set.

[0208] It can be understood that the above-mentioned method 1 and method 2 are equivalent descriptions and can be replaced with each other.

[0209] In one implementation, the first information described in S720 and the second information in this example can be carried together in two bits of the SRS resource set indication information field of the first signaling. The first signaling is DCI. Reinterpreting the meaning of the SRS resource set indication information field, the first information occupies one bit and indicates whether the association between the first SRS resource set and the second SRS resource set and the SBFD time unit is the first association relationship or the second association relationship. The second information occupies one bit and indicates whether the transmission mode is transmission mode 1 or transmission mode 2. For example, when the first information takes the value of "0", it indicates the first association relationship, and when the second information takes the value of "1", it indicates the second association relationship, and vice versa. For example, when the second information takes the value of "0", it indicates that the first signal is transmitted using transmission mode 1, and when the second information takes the value of "1", it indicates that the first signal is transmitted using transmission mode 2, and vice versa.

[0210] In another implementation, the first information described in S720 and the second information in this example can be carried together in the 2 bits of the SRS resource set indication information field of the first signaling. The first signaling is DCI, and the meaning of the SRS resource set indication information field is reinterpreted. Optionally, the SRS resource set indication information is a first value, indicating that the first SRS resource set is associated with the SBFD time unit and the second SRS resource set is associated with the non-SBFD time unit (i.e., the first association relationship), and instructs the terminal device to send the first signal in transmission mode 1; the SRS resource set indication information is a second value, indicating that the first SRS resource set is associated with the SBFD time unit and the second SRS resource set is associated with the non-SBFD time unit (i.e., the first association relationship), and instructs the terminal device to send the first signal in transmission mode 2; the SRS resource set indication information is a third value, indicating that the first SRS resource set is associated with the non-SBFD time unit and the second SRS resource set is associated with the SBFD time unit (i.e., the second association relationship), and instructs the terminal device to send the first signal in transmission mode 1; the SRS resource set indication information is a fourth value, indicating that the first SRS resource set is associated with the non-SBFD time unit and the second SRS resource set is associated with the SBFD time unit (i.e., the second association relationship), and instructs the terminal device to send the first signal in transmission mode 2, wherein the first value, the second value, the third value and the fourth value are different from each other. For example, the first value, the second value, the third value, and the fourth value may be one of “00”, “01”, “10”, and “11”.

[0211] Example 2: The second information not only indicates the transmission mode, but also clearly indicates whether the first signal is transmitted in an SBFD time unit or a non-SBFD time unit when the transmission mode is 1.

[0212] Optionally, the second information is a first value, instructing the terminal device to transmit the first signal in transmission mode 1 and to send the first signal only in SBFD time units; the second information is a second value, instructing the terminal device to transmit the first signal in transmission mode 1 and to send the first signal only in non-SBFD time units; and the second information is a third value, instructing the terminal device to transmit the first signal in transmission mode 2, i.e., the terminal device can send the first signal in different types of time units. The first value, the second value, and the third value are different from each other. For example, the first value, the second value, and the third value can be one of "00", "01", "10", and "11".

[0213] For example, the above description can also be replaced as follows: the second information is the first value, indicating that the terminal device transmits the first signal in transmission mode 1, and only sends the first signal in the time unit associated with the first SRS resource set; the second information is the second value, indicating that the terminal device sends the first signal in transmission mode 1, and only sends the first signal in the time unit associated with the second SRS resource set; the second information is the third value, indicating that the terminal device sends the first signal in transmission mode 2, that is, the first signal can be sent in the time unit associated with two SRS resource sets.

[0214] In one implementation, the second information is 2-bit information, and the second information can be indicated by 2 bits of the SRS resource set indication information field of the first signaling, and the first signaling is DCI.

[0215] In another implementation, the first information described in S720 and the second information in this example can be carried together in the two bits of the SRS resource set indication information field of the first signaling. The first signaling is DCI, and the meaning of the SRS resource set indication information field is reinterpreted. It can be understood that because the second information not only indicates the transmission mode, but also explicitly indicates whether the first signal is transmitted in SBFD time units or non-SBFD time units when the transmission mode is transmission mode 1, there are six possible combinations of the two association relationships and the two transmission modes. However, the SRS resource set indication information only has two bits. Therefore, in the implementation, any four of the six combinations can be selected based on actual needs. The six combinations are: the first combination: indicating that the first SRS resource set is associated with the SBFD time unit and the second SRS resource set is associated with the non-SBFD time unit (i.e., the first association relationship), and indicating that the terminal device sends the first signal in transmission mode 1 and the terminal device only sends the first signal in the time unit associated with the first SRS resource (i.e., the first signal is only sent in the SBFD time unit); the second combination: indicating that the first SRS resource set is associated with the SBFD time unit and the second SRS resource set is associated with the non-SBFD time unit (i.e., the first association relationship), and indicating that the terminal device sends the first signal in transmission mode 1 and the terminal device only sends the first signal in the time unit associated with the second SRS resource (i.e., the first signal is only sent in the non-SBFD time unit); the third combination: indicating that the first SRS resource set is associated with the non-SBFD time unit and the second SRS resource set is associated with the SBFD time unit (i.e., the second association relationship), and indicating that the terminal device sends the first signal in transmission mode 1 The first signal and the terminal device only sends the first signal in the time unit associated with the first SRS resource (that is, the first signal is only sent in the non-SBFD time unit); the fourth combination: indicating that the first SRS resource set is associated with the non-SBFD time unit and the second SRS resource set is associated with the SBFD time unit (that is, the second association relationship), and indicating that the terminal device sends the first signal in transmission mode 1 and the terminal device only sends the first signal in the time unit associated with the second SRS resource (that is, the first signal is only sent in the SBFD time unit); combination five: indicating that the first SRS resource set is associated with the SBFD time unit and the second SRS resource set is associated with the non-SBFD time unit (that is, the first association relationship), and indicating that the terminal device sends the first signal in transmission mode 2; combination six: indicating that the first SRS resource set is associated with the non-SBFD time unit and the second SRS resource set is associated with the SBFD time unit (that is, the second association relationship), and indicating that the terminal device sends the first signal in transmission mode 2.

[0216] For example, the four combinations selected from the six combinations are combination #1, combination #2, combination #3 and combination #4. Optionally, the SRS resource set indication information field is a first value, indicating combination #1, the SRS resource set indication information field is a second value, indicating combination #2, the SRS resource set indication information is a third value, indicating combination #3, and the SRS resource set indication information field is a fourth value, indicating combination #4, wherein the first value, the second value, the third value and the fourth value are different from each other. For example, the first value, the second value, the third value and the fourth value can be one of "00", "01", "10" and "11".

[0217] In another implementation, the first information described in S720 and the second information in this example may be carried together in a first field of a first signaling, the length of the first field is 3 bits, and the first signaling is DCI.

[0218] Optionally, when the first field is a first value, it indicates that the first SRS resource set is associated with the SBFD time unit and the second SRS resource set is associated with the non-SBFD time unit (i.e., the first association relationship), and indicates that the terminal device sends the first signal in transmission mode 1 and the terminal device sends the first signal only in the time unit associated with the first SRS resource (i.e., the first signal is sent only in the SBFD time unit); when the first field is a second value, it indicates that the first SRS resource set is associated with the SBFD time unit and the second SRS resource set is associated with the non-SBFD time unit. time unit (i.e., the first association relationship), and, indicating that the terminal device sends the first signal in transmission mode 1 and the terminal device sends the first signal only in the time unit associated with the second SRS resource (i.e., the first signal is sent only in the non-SBFD time unit); when the first field is the third value, it indicates that the first SRS resource set is associated with the non-SBFD time unit and the second SRS resource set is associated with the SBFD time unit (i.e., the second association relationship), and, indicating that the terminal device sends the first signal in transmission mode 1 and the terminal device sends the first signal only in the time unit associated with the first SRS resource (i.e., the first signal is sent only in the non-SBFD time unit); when the first field is the fourth value, it indicates that the first SRS resource set is associated with the non-SBFD time unit and the second SRS resource set is associated with the SBFD time unit. The first field is associated with an SBFD time unit (i.e., a second association relationship), and instructs the terminal device to send the first signal in transmission mode 1 and the terminal device to send the first signal only in the time unit associated with the second SRS resource (i.e., send the first signal only in the SBFD time unit); when the first field is the fifth value, it indicates that the first SRS resource set is associated with the SBFD time unit and the second SRS resource set is associated with the non-SBFD time unit (i.e., the first association relationship), and instructs the terminal device to send the first signal in transmission mode 2; when the first field is the sixth value, it indicates that the first SRS resource set is associated with the non-SBFD time unit and the second SRS resource set is associated with the SBFD time unit (i.e., the second association relationship), and instructs the terminal device to send the first signal in transmission mode 2. The first value, the second value, the third value, the fourth value, the fifth value, and the sixth value are different from each other. For example, the first value, the second value, the third value, and the fourth value can be one of "000", "001", "010", "011", "100", and "101".

[0219] Optionally, in one possible solution, the meaning of the two bits in the SRS resource set indication information in the first signaling (DCI) can be redefined to indicate the association between the first SRS resource set and the second SRS resource set and the SBFD time unit and the non-SBFD time unit, as well as the transmission method of the uplink signal. In this way, after receiving the SRS resource set indication information, the terminal device reinterprets the meaning of the two bits in the SRS resource set indication information in the first signaling (DCI). The following example illustrates this.

[0220] In one implementation, the SRS resource set indication information is a first value, indicating that the first SRS resource set is associated with the SBFD time unit and the second SRS resource set is associated with the non-SBFD time unit (i.e., the first association relationship), and instructs the terminal device to send the first signal in transmission mode 1; the SRS resource set indication information is a second value, indicating that the first SRS resource set is associated with the SBFD time unit and the second SRS resource set is associated with the non-SBFD time unit (i.e., the first association relationship), and instructs the terminal device to send the first signal in transmission mode 2; the SRS resource set indication information is a third value, indicating that the first SRS resource set is associated with the non-SBFD time unit and the second SRS resource set is associated with the SBFD time unit (i.e., the second association relationship), and instructs the terminal device to send the first signal in transmission mode 1; the SRS resource set indication information is a fourth value, indicating that the first SRS resource set is associated with the non-SBFD time unit and the second SRS resource set is associated with the SBFD time unit (i.e., the second association relationship), and instructs the terminal device to send the first signal in transmission mode 2, wherein the first value, the second value, the third value and the fourth value are different from each other. For example, the first value, the second value, the third value, and the fourth value may be one of “00”, “01”, “10”, and “11”.

[0221] In another possible implementation, the network device can select any four of the six combinations described above based on actual needs. For example, the four selected combinations are combination #1, combination #2, combination #3, and combination #4. Optionally, when the SRS resource set indication information field is the first value, it indicates combination #1; when the 2 bits are the second value, it indicates combination #2; when the 2 bits are the third value, it indicates combination #3; when the 2 bits are the fourth value, it indicates combination #4, wherein the first value, the second value, the third value, and the fourth value are different from each other. For example, the first value, the second value, the third value, and the fourth value can be one of "00", "01", "10", and "11".

[0222] In another possible solution, the first signaling (DCI) includes a first field having a length of 3 bits. The first field indicates the association relationship between the first SRS resource set and the second SRS resource set and the SBFD time unit and the non-SBFD time unit, as well as the transmission method of the uplink signal. In this way, the terminal device obtains the association relationship and transmission method based on the first field after receiving the SRS resource set indication information.

[0223] Optionally, when the first field is the first value, it indicates that the first SRS resource set is associated with the SBFD time unit and the second SRS resource set is associated with the non-SBFD time unit (i.e., the first association relationship), and indicates that the terminal device sends the first signal in transmission mode 1 and the terminal device only sends the first signal in the time unit associated with the first SRS resource (i.e., the first signal is only sent in the SBFD time unit); when the first field is the second value, it indicates that the first SRS resource set is associated with the SBFD time unit and the second SRS resource set is associated with the non-SBFD time unit (i.e., the first association relationship), and indicates that the terminal device sends the first signal in transmission mode 1 and the terminal device only sends the first signal in the time unit associated with the second SRS resource (i.e., the first signal is only sent in the non-SBFD time unit); when the first field is the third value, it indicates that the first SRS resource set is associated with the non-SBFD time unit and the second SRS resource set is associated with the SBFD time unit (i.e., the second association relationship), and indicates that the terminal device sends the first signal in transmission mode 1. When the first field is a fourth value, it indicates that the first SRS resource set is associated with a non-SBFD time unit and the second SRS resource set is associated with an SBFD time unit (i.e., the first signal is sent only in a non-SBFD time unit), and when the first field is a fifth value, it indicates that the first SRS resource set is associated with an SBFD time unit and the second SRS resource set is associated with a non-SBFD time unit (i.e., the first association relationship), and when the first field is a sixth value, it indicates that the first SRS resource set is associated with a non-SBFD time unit and the second SRS resource set is associated with an SBFD time unit (i.e., the second ... For example, the first value, the second value, the third value, and the fourth value may be one of “000”, “001”, “010”, “011”, “100”, and “101”.

[0224] The above describes method 700 in detail. It can be seen that in this method, the terminal device can ensure that different SRS resource sets are associated with the SBFD time unit and the non-SBFD time unit respectively based on the first association relationship or the second association relationship, thereby ensuring that the first signal is sent using different spatial domain parameters in the SBFD time unit and the non-SBFD time unit.

[0225] It can be understood that method 700 can be applied to a single TRP scenario or an mTRP scenario.

[0226] Optionally, in the Single TRP scenario, the network device in method 700 can be regarded as a TRP.

[0227] Optionally, in the mTRP scenario, the network device in S730 may include a first network device (e.g., a first TRP) and a second network device (e.g., a second TRP). However, it should be noted that in this scenario, the network device in S710 may be the first network device or the second network device, and this application does not limit this.

[0228] This method differs from method 700 in that, in S730, the first signal sent by the terminal device in a non-SBFD time unit is sent to the first network device, and the first signal sent in an SBFD time unit is sent to the second network device. Accordingly, the first network device receives the first signal only in the SBFD time unit, and the second network device receives the first signal only in the non-SBFD time unit. This method ensures compatibility between SBFD and mTRP.

[0229] For example, if the association relationship is a first association relationship, the first network device receives the first signal only in the SBFD time unit, and the second network device receives the first signal only in the non-SBFD time unit. It can also be understood that the first network device receives the first signal in the time unit associated with the first SRS resource set, and the second network device receives the first signal in the time unit associated with the second SRS resource set.

[0230] It should be understood that the size of the serial numbers of the above processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0231] It should also be understood that in some of the above embodiments, devices in existing network architectures are mainly used as examples for illustrative purposes, and it should be understood that the embodiments of the present application do not limit the specific form of the devices. For example, devices that can achieve the same functions in the future are applicable to the embodiments of the present application.

[0232] It can be understood that in the above-mentioned various method embodiments, the methods and operations implemented by devices (such as the above-mentioned network devices, terminal devices, etc.) can also be implemented by components of the devices (such as chips or circuits).

[0233] The method provided by the embodiments of the present application is described in detail above with reference to Figures 1 to 8 . The method is primarily described from the perspective of interaction between a network device and a terminal device. It is understood that, in order to implement the aforementioned functions, the network device and the terminal device include hardware structures and / or software modules corresponding to the respective functions.

[0234] Those skilled in the art should be aware that, in combination with the units and algorithm steps of each example described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is performed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0235] Hereinafter, the communication device provided by the embodiment of the present application will be described in detail with reference to Figures 9 and 10. It should be understood that the description of the device embodiment corresponds to the description of the method embodiment. Therefore, for the content not described in detail, please refer to the method embodiment above. For the sake of brevity, some contents will not be repeated. In the embodiment of the present application, the network device or terminal device can be divided into functional modules according to the above method example. For example, each functional module can be divided corresponding to each function, or two or more functions can be integrated into one processing module. The above-mentioned integrated module can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of modules in the embodiment of the present application is schematic and is only a logical functional division. There may be other division methods in actual implementation. The following is an example of dividing each functional module corresponding to each function.

[0236] The above describes in detail the uplink transmission method provided by this application. The following describes the communication device provided by this application. In one possible implementation, the device is used to implement the steps or processes corresponding to the terminal device in the above method embodiment. In another possible implementation, the device is used to implement the steps or processes corresponding to the network device in the above method embodiment.

[0237] Figure 9 is a schematic block diagram of a communication device 900 provided in an embodiment of the present application. As shown in Figure 9, the device 900 may include a communication unit 910 and a processing unit 920. The communication unit 910 can communicate with the outside world, and the processing unit 920 is used to process data. The communication unit 910 may also be referred to as a communication interface or a transceiver unit.

[0238] In one possible design, the device 900 can implement steps or processes corresponding to those performed by the network device in the above method embodiment, wherein the processing unit 920 is used to perform processing-related operations of the network device in the above method embodiment, and the communication unit 910 is used to perform sending-related operations of the network device in the above method embodiment.

[0239] In another possible design, the device 900 can implement steps or processes corresponding to those performed by the terminal device in the above method embodiment, wherein the communication unit 910 is used to perform reception-related operations of the terminal device in the above method embodiment, and the processing unit 920 is used to perform processing-related operations of the terminal device in the above method embodiment.

[0240] It should be understood that the device 900 here is embodied in the form of a functional unit. The term "unit" here may refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor (such as a shared processor, a dedicated processor or a group processor, etc.) and a memory for executing one or more software or firmware programs, a merging logic circuit and / or other suitable components that support the described functions. In an optional example, those skilled in the art will understand that the device 900 may be specifically a network device in the above-mentioned embodiment, and may be used to execute the various processes and / or steps corresponding to the network device in the above-mentioned method embodiment, or the device 900 may be specifically a terminal device in the above-mentioned embodiment, and may be used to execute the various processes and / or steps corresponding to the terminal device in the above-mentioned method embodiment. To avoid repetition, it will not be described here.

[0241] The apparatus 900 of each of the above-mentioned solutions has the function of implementing the corresponding steps performed by the network device in the above-mentioned method, or the apparatus 900 of each of the above-mentioned solutions has the function of implementing the corresponding steps performed by the terminal device in the above-mentioned method. The functions can be implemented by hardware, or can be implemented by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above-mentioned functions; for example, the communication unit can be replaced by a transceiver (for example, the sending unit in the communication unit can be replaced by a transmitter, and the receiving unit in the communication unit can be replaced by a receiver), and other units, such as the processing unit, can be replaced by a processor to respectively perform the sending and receiving operations and related processing operations in each method embodiment.

[0242] In addition, the above-mentioned communication unit can also be a transceiver circuit (for example, it can include a receiving circuit and a transmitting circuit), and the processing unit can be a processing circuit. In an embodiment of the present application, the device in Figure 9 can be a terminal device or network device in the aforementioned embodiment, or it can be a chip or chip system, such as a system on chip (SoC). Among them, the communication unit can be an input and output circuit, a communication interface; the processing unit is a processor or microprocessor or integrated circuit integrated on the chip. This is not limited here.

[0243] Figure 10 is a schematic block diagram of a communication device 1000 provided in an embodiment of the present application. The device 1000 includes a processor 1010 and a transceiver 1020. The processor 1010 and the transceiver 1020 communicate with each other via an internal connection path. The processor 1010 is configured to execute instructions to control the transceiver 1020 to send and / or receive signals.

[0244] Optionally, the apparatus 1000 may further include a memory 1030, which communicates with the processor 1010 and the transceiver 1020 via an internal connection path. The memory 1030 is used to store instructions, and the processor 1010 can execute the instructions stored in the memory 1030. In one possible implementation, the apparatus 1000 is used to implement the various processes and steps corresponding to the network device in the above-mentioned method embodiment. In another possible implementation, the apparatus 1000 is used to implement the various processes and steps corresponding to the terminal device in the above-mentioned method embodiment.

[0245] It should be understood that the device 1000 can be specifically a network device or terminal device in the above-mentioned embodiment, or a chip or chip system. Correspondingly, the transceiver 1020 can be the transceiver circuit of the chip, which is not limited here. Specifically, the device 1000 can be used to execute the various steps and / or processes corresponding to the network device or terminal device in the above-mentioned method embodiment. Optionally, the memory 1030 can include a read-only memory and a random access memory, and provide instructions and data to the processor. A portion of the memory can also include a non-volatile random access memory. For example, the memory can also store device type information. The processor 1010 can be used to execute instructions stored in the memory, and when the processor 1010 executes the instructions stored in the memory, the processor 1010 is used to execute the various steps and / or processes of the above-mentioned method embodiment corresponding to the network device or terminal device.

[0246] During implementation, each step of the above method can be completed by an integrated logic circuit of the hardware in the processor or by instructions in the form of software. The steps of the method disclosed in conjunction with the embodiments of the present application can be directly embodied as being executed by a hardware processor, or can be executed by a combination of hardware and software modules in the processor. The software module can be located in a storage medium mature in the art such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. 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 conjunction with its hardware. To avoid repetition, it will not be described in detail here.

[0247] It should be noted that the processor in the embodiments of the present application can be an integrated circuit chip with signal processing capabilities. During implementation, each step of the above-mentioned method embodiment can be completed by hardware integrated logic circuits in the processor or by software instructions. The above-mentioned processor can be a general-purpose processor, digital signal processing (DSP), ASIC, field-programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, or discrete hardware component. The processor in the embodiments of the present application can implement or execute the various methods, steps, and logic block diagrams disclosed in the embodiments of the present application. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in the embodiments of the present application can be directly implemented and executed by a hardware decoding processor, or by a combination of hardware and software modules in the decoding processor. The software module can be located in a storage medium mature in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, etc. The storage medium is located in the memory, and the processor reads the information in the memory and, in conjunction with its hardware, completes the steps of the above-mentioned method.

[0248] It is understood that the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchlink DRAM (SLDRAM), and direct RAM bus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0249] It should be noted that when the processor is a general-purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, the memory (storage module) can be integrated into the processor.

[0250] In addition, the present application also provides a computer-readable storage medium, which stores computer instructions. When the computer instructions are executed on a computer, the operations and / or processes performed by the network device or terminal device in each method embodiment of the present application are executed.

[0251] The present application also provides a computer program product, which includes computer program code or instructions. When the computer program code or instructions are run on a computer, the operations and / or processes performed by the network device or terminal device in the various method embodiments of the present application are executed.

[0252] In addition, the present application further provides a chip, the chip including a processor. A memory for storing a computer program is provided independently of the chip, and the processor is configured to execute the computer program stored in the memory, so that the operations and / or processing performed by the network device or the terminal device in any one of the method embodiments are performed.

[0253] Furthermore, the chip may further include a communication interface. The communication interface may be an input / output interface, or an interface circuit, etc. Furthermore, the chip may further include a memory.

[0254] In addition, the present application also provides a communication system, including the network device and terminal device in the embodiments of the present application.

[0255] It should also be noted that the memory described herein is intended to comprise, but not be limited to, these and any other suitable types of memory.

[0256] Those skilled in the art will appreciate that the various exemplary units and algorithmic steps described in conjunction with the embodiments disclosed herein can be implemented using electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians may use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this application. Those skilled in the art will clearly understand that, for ease of description and brevity, the specific operating processes of the systems, devices, and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here. In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units described is merely a logical functional division. In actual implementation, other divisions may be used, such as multiple units or components being combined or integrated into another system, or some features being omitted or not implemented. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interface, or indirect coupling or communication connection between devices or units, which may be electrical, mechanical, or other forms. The units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment. In addition, the functional units in the various embodiments of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0257] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

[0258] It should be understood that references to "embodiments" throughout this specification mean that a particular feature, structure, or characteristic associated with the embodiment is included in at least one embodiment of the present application. Therefore, various embodiments throughout this specification do not necessarily refer to the same embodiment. Furthermore, these particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0259] It should also be understood that in this application, "when", "if" and "if" all mean that the network element will make corresponding processing under certain objective circumstances, which is not a time limit, and does not require the network element to make judgment actions when implementing it, nor does it mean that there are other limitations.

[0260] It should also be understood that in each embodiment of the present application, "A corresponds to B" means that B is associated with A, and B can be determined based on A. However, it should also be understood that determining B based on A does not mean determining B based solely on A, and B can also be determined based on A and / or other information.

[0261] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A method for uplink transmission, characterized in that: include: Receiving a first signaling from a network device, where the first signaling indicates sending a first signal, wherein the first signal is carried on a physical uplink shared channel PUSCH; Determine that the association relationship between the first sounding reference signal SRS resource set and the second SRS resource set and the sub-band full-duplex SBFD time unit and the non-SBFD time unit is a first association relationship or a second association relationship, wherein the first SRS resource set and the second SRS resource set are two SRS resource sets configured by the network device for the terminal device, the first association relationship is that the first SRS resource set is associated with the SBFD time unit, and the second SRS resource set is associated with the non-SBFD time unit, and the second association relationship is that the first SRS resource set is associated with the non-SBFD time unit, and the second SRS resource set is associated with the SBFD time unit; The first signal is sent in the SBFD time unit based on the SRS resource set associated with the SBFD time unit, and / or the first signal is sent in the non-SBFD time unit based on the SRS resource set associated with the non-SBFD time unit.

2. The method according to claim 1, characterized in that The determining that the association relationship between the first SRS resource set and the second SRS resource set and the SBFD time unit and the non-SBFD time unit is the first association relationship or the second association relationship includes: receiving first information from the network device, where the first information indicates the first association relationship or the second association relationship; Based on the first information, it is determined that the association relationship between the first SRS resource set and the second SRS resource set and the SBFD time unit and the non-SBFD time unit is the first association relationship or the second association relationship.

3. The method according to claim 2, characterized in that The first information is carried in a second signaling, where the second signaling is a radio resource control RRC signaling, or the first information is carried in an SRS resource set indication information field of the first signaling, where the first signaling is downlink control information DCI.

4. The method according to claim 1, characterized in that: The first SRS resource set includes a first field and / or the second SRS resource set includes a second field, the first field indicates that the first SRS resource set is associated with the SBFD time unit or the non-SBFD time unit, the second field indicates that the second SRS resource set is associated with the SBFD time unit or the non-SBFD time unit, and the first SRS resource set and the second SRS resource set are associated with different time unit types, The determining that the association relationship between the first SRS resource set and the second SRS resource set and the SBFD time unit and the non-SBFD time unit is the first association relationship or the second association relationship includes: Based on the first field and / or the second field, it is determined that the association relationship between the first SRS resource set and the second SRS resource set and the SBFD time unit and the non-SBFD time unit is the first association relationship or the second association relationship.

5. The method according to claim 1, characterized in that The determining that the association relationship between the first SRS resource set and the second SRS resource set and the SBFD time unit and the non-SBFD time unit is the first association relationship or the second association relationship includes: The first SRS resource set is an SRS resource set dedicated to SBFD, and an association relationship between the first SRS resource set and the second SRS resource set and the SBFD time unit and the non-SBFD time unit is determined to be the first association relationship; or, The second SRS resource set is an SRS resource set dedicated to SBFD, and the association relationship between the first SRS resource set and the second SRS resource set and the SBFD time unit and the non-SBFD time unit is determined to be the second association relationship.

6. The method according to any one of claims 1 to 5, characterized in that The method further comprises: receiving second information from the network device, the second information indicating that the first signal is transmitted in a first transmission mode or a second transmission mode, wherein the first transmission mode indicates that the first signal is sent in the SBFD time unit or the non-SBFD time unit, and the second transmission mode indicates that the first signal is sent in the SBFD time unit and the non-SBFD time unit; Based on the second information, determine to transmit the first signal in the first transmission mode or the second transmission mode.

7. The method according to claim 6, characterized in that The second information is carried in the SRS resource set indication information field in the first signaling, and the first signaling is downlink control information DCI.

8. The method according to claim 6 or 7, characterized in that: The method further comprises: Receive third information from the network device, wherein the third information indicates that the first signal is transmitted in the first transmission mode, or the third information indicates that the first signal is transmitted in the second transmission mode, or the third information indicates that the first signal is transmitted based on the second information.

9. The method according to claim 8, characterized in that The third information is carried in the second signaling, and the second signaling is the radio resource control RRC signaling.

10. A method for uplink transmission, characterized in that: include: Sending a first signaling to a terminal device, where the first signaling indicates sending a first signal, wherein the first signal is carried on a physical uplink shared channel PUSCH; The first signal is received in a sub-band full-duplex SBFD time unit, and / or the first signal is received in a non-SBFD time unit, wherein the first signal received in the SBFD time unit is transmitted based on one SRS resource set associated with the SBFD time unit among two sounding reference signal SRS resource sets configured for the terminal device, and the first signal received in the non-SBFD time unit is transmitted based on one SRS resource set associated with the non-SBFD time unit among the two SRS resource sets, The two SRS resource sets include a first SRS resource set and a second SRS resource set, and the association relationship between the two SRS resource sets and the SBFD time unit and the non-SBFD time unit is a first association relationship or a second association relationship, The first association relationship is that the first SRS resource set is associated with the SBFD time unit, and the second SRS resource set is associated with the non-SBFD time unit; the second association relationship is that the first SRS resource set is associated with the non-SBFD time unit, and the second SRS resource set is associated with the SBFD time unit.

11. The method according to claim 10, characterized in that The method further comprises: Sending first information to the terminal device, where the first information indicates the first association relationship or the second association relationship.

12. The method according to claim 11, characterized in that The first information is carried in a second signaling, where the second signaling is a radio resource control RRC signaling, or the first information is carried in an SRS resource set indication information field of the first signaling, where the first signaling is downlink control information DCI.

13. The method according to claim 10, characterized in that The first SRS resource set includes a first field and / or the second SRS resource set includes a second field, the first field indicates that the first SRS resource set is associated with the SBFD time unit or the non-SBFD time unit, the second field indicates that the second SRS resource set is associated with the SBFD time unit or the non-SBFD time unit, and the time unit types associated with the first SRS resource set and the second SRS resource set are different.

14. The method according to claim 10, characterized in that The first SRS resource set is an SRS resource set dedicated to SBFD; or, the second SRS resource set is an SRS resource set dedicated to SBFD.

15. The method according to any one of claims 10 to 14, characterized in that The method further comprises: Send second information to the terminal device, wherein the second information indicates that the first signal is transmitted in a first transmission mode or a second transmission mode, wherein the first transmission mode indicates that the first signal is sent in the SBFD time unit or the non-SBFD time unit, and the second transmission mode indicates that the first signal is sent in the SBFD time unit and the non-SBFD time unit.

16. The method according to claim 15, characterized in that The second information is carried in the SRS resource set indication information field in the first signaling, and the first signaling is downlink control information DCI.

17. The method according to claim 15 or 16, characterized in that The method further comprises: Sending third information to the terminal device, wherein the third information indicates that the first signal is transmitted in the first transmission mode, or, the third information indicates that the first signal is transmitted in the second transmission mode, or, the third information indicates that the first signal is transmitted based on the second information.

18. The method according to claim 17, characterized in that The third information is carried in the second signaling, and the second signaling is the radio resource control RRC signaling.

19. A communication device, characterized in that: The communication device comprises a module for executing the method according to any one of claims 1 to 9, or comprises a module for executing the method according to any one of claims 10 to 18.

20. A communication device, characterized in that: include: at least one processor, The at least one processor is configured to execute a computer program stored in the memory, so that the apparatus performs the method according to any one of claims 1 to 9, or so that the apparatus performs the method according to any one of claims 10 to 18.

21. A computer-readable storage medium, characterized in that: include: The computer-readable storage medium stores a computer program; when the computer program is executed on a computer, the computer executes the method according to any one of claims 1 to 9, or the computer executes the method according to any one of claims 10 to 18.

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