CN118283822A

CN118283822A - Communication method and device

Info

Publication number: CN118283822A
Application number: CN202211717819.0A
Authority: CN
Inventors: 李怡然; 余健; 许华
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2022-12-29
Filing date: 2022-12-29
Publication date: 2024-07-02
Also published as: WO2024140304A1

Abstract

The application provides a communication method and a communication device, which are used for improving the communication capacity of a transmission scene of a multi-antenna panel under a scene of a multi-transmission site. According to the method, a first terminal device may determine a first resource, the first resource corresponding to a first set of antenna ports of the first terminal device, wherein the first resource may be included in a first set of transmission resources, the first set of transmission resources corresponding to a first transmission site; the first terminal device may further transmit the first information through the first antenna port set according to the precoding information corresponding to the first resource. Wherein the first set of transmission resources may further comprise second resources; the second resource corresponds to a second set of antenna ports of the first terminal device, the first resource also corresponds to a third set of antenna ports of the second terminal device, or the second resource corresponds to a third set of antenna ports of the second terminal device.

Description

Communication method and device

Technical Field

The present application relates to the field of mobile communications technologies, and in particular, to a communication method and apparatus.

Background

In the fourth generation (4th generation,4G) and fifth generation (5th generation,5G) wireless communication systems, i.e., new Radio (NR) access technology systems, uplink communication may perform measurement of channel state information (CHANNEL STATE information, CSI) through Sounding REFERENCE SIGNAL (SRS). According to the measurement result, the network device can jointly indicate the Physical Uplink Shared Channel (PUSCH) sending port and the precoding matrix of the UE through the sounding reference signal resource indication (SRS resource indicator, SRI) and the transmission precoding matrix indication (TRANSMITTED PRECODING MATRIX INDICATOR, TPMI), so as to realize the indication of uplink transmission.

Currently, NR already supports a single User Equipment (UE) scenario, the UE transmits PUSCH to multiple transmission reception points (transmission reception point, TRP) respectively. In addition, NR may support UE transmissions through multiple antenna panels (mPanel), each including at least one antenna port. When the UE transmits uplink data to multiple TRP (multi-TRP, mTRP) through the multiple antenna panels, a beam (beam) formed by each antenna panel of the UE is directed to the TRP corresponding to the antenna panel, and the beams formed by antennas of different antenna panels can be independently adjusted. However, considering that when the UE performs uplink transmission simultaneously based on multiple antenna panels, the power of each antenna panel may be limited, one possible solution is to additionally obtain a power gain through a UE aggregate transmission technology (i.e., a multiple UE cooperative transmission technology), so as to increase uplink capacity. Therefore, it is necessary to propose a transmission scheme suitable for a UE aggregate transmission scenario of a multi-antenna panel in a multi-TRP scenario.

Disclosure of Invention

The application provides a communication method and a communication device, which are used for realizing the transmission of a UE aggregate transmission scene of a multi-antenna panel in a multi-TRP scene so as to improve the communication capacity of the transmission scene of the multi-antenna panel in the multi-TRP scene.

In a first aspect, a communication method is provided. The method may be implemented by a first terminal device, which may also be referred to as a first communication device. The first terminal device may be a terminal device or a component of a terminal device. The component in the present application may include, for example, at least one of a chip, a chip system, a processor, a transceiver, a processing unit, or a transceiver unit. Taking the example that the execution subject is the first terminal device, the method can be realized by the following steps: the first terminal device may determine a first resource corresponding to a first set of antenna ports of the first terminal device, wherein the first resource may be included in a first set of transmission resources corresponding to a first transmission site; the first terminal device may further transmit the first information through the first antenna port set according to the precoding information corresponding to the first resource. Wherein the first set of transmission resources may further comprise second resources; the second resource corresponds to a second set of antenna ports of the first terminal device, the first resource also corresponds to a third set of antenna ports of the second terminal device, or the second resource corresponds to a third set of antenna ports of the second terminal device.

Based on the method shown in the first aspect, the first transmission resource set includes a first resource and a second resource, where the first resource corresponds to different antenna port sets (i.e., antenna panels) of the multiple terminal devices, or the first resource and the second resource respectively correspond to different antenna panels of different terminal devices, and since the first transmission resource set corresponds to the first transmission site (i.e., TRP), the above resource configuration manner supports that the multiple terminal devices in the multiple transmission site scenario respectively use a part of the antenna port sets, and respectively use precoding information corresponding to the resources to transmit uplink information to the same transmission site, so that aggregate transmission of UEs of the multiple antenna panels in the multiple TRP scenario can be implemented, so as to obtain power gain and improve uplink communication capacity.

In one possible implementation, if the second resource corresponds to a third set of antenna ports of the second terminal device, the first set of transmission resources further includes a third resource, the third resource corresponds to the second set of antenna ports of the first terminal device, the first set of transmission resources further includes a fourth resource, and the fourth resource corresponds to a fourth set of antenna ports of the second terminal device.

Based on the resource allocation manner, four resources in the resource set corresponding to the first transmission site may correspond to two antenna port sets of each of the two terminal devices, so as to distinguish different antenna port sets through different resource indexes, thereby indicating the UE to perform aggregate transmission, so as to improve the communication capacity.

In one possible implementation, the second resource corresponds to a third set of antenna ports of the second terminal device, the first terminal device may further determine a fifth resource, the fifth resource corresponds to a second set of antenna ports of the first terminal device, the fifth resource belongs to a second set of transmission resources, the second set of transmission resources corresponds to the second transmission site, the second set of transmission resources further includes a sixth resource, the sixth resource corresponds to a fourth set of antenna ports of the second terminal device; the first terminal device may further transmit second information through the second antenna port set according to the precoding information corresponding to the fifth resource.

Based on the implementation manner, the first terminal device can send uplink information to different two transmission stations through the two antenna port sets respectively through the precoding information corresponding to the first resource and the precoding information corresponding to the fifth resource, so that flexible independent modulation of beams formed by different antenna ports of the aggregated UE can be realized, and the communication capacity can be further improved.

In one possible implementation, the second set of transmission resources may further include a seventh resource, the seventh resource corresponding to the first set of antenna ports, the second set of transmission resources further including an eighth resource, the eighth resource corresponding to the third set of antenna ports.

Based on the resource allocation mode, four resources in the resource set corresponding to the second transmission site can correspond to two antenna ports of each of the two terminal devices, so that the network equipment can jointly allocate resources for the UE in the aggregate UE group, and the flexibility of the network equipment in scheduling a plurality of terminals for uplink transmission is improved.

In one possible implementation manner, the first terminal device may further receive first control information, where the first control information includes at least one of the following information: an index of a first cell and an index of a first resource in a first set of transmission resources, the first cell belonging to a first transmission site; an index of a second cell and an index of a fifth resource in a second set of transmission resources, the second cell belonging to a second transmission site.

Based on this implementation, the first terminal device may implement according to the first control information: the first resource is determined according to the index of the first cell and the index of the first resource in the first transmission resource set, and/or the fifth resource is determined according to the index of the second cell and the index of the fifth resource in the second transmission resource set, so that accurate indication and determination of the resources can be realized, uplink transmission of the UE to different transmission sites by adopting different antenna panels is realized, and communication efficiency and uplink capacity are improved. When the first control information contains the two contents, multiplexing indication of aggregation transmission of the same control information to different antenna panels can be realized, and signaling overhead can be reduced.

In one possible implementation, the first control information may be included in first downlink control information, and the first downlink control information may further include at least one of the following information: an index of a third cell and an index of a second resource in the first set of transmission resources, the third cell belonging to the first transmission site; an index of a fourth cell and an index of a fourth resource in the first set of transmission resources, the fourth cell belonging to the first transmission site; an index of a fifth cell and an index of a sixth resource in the second set of transmission resources, the fifth cell belonging to the second transmission site; an index of a sixth cell and an index of an eighth resource in the second set of transmission resources, the sixth cell belonging to the second transmission site.

Based on the implementation manner, the first terminal device may determine the first resource and the fifth resource according to the first downlink control information, and perform transmission of uplink information. Further, the second terminal device may implement at least one of the following according to the first downlink control information: determining a second resource according to the index of the third cell and the index of the second resource in the first transmission resource set, so that uplink information can be sent to the first transmission station through precoding information corresponding to the second resource and through the third antenna port set; or determining the fourth resource according to the index of the fourth cell and the index of the fourth resource in the first transmission resource set, so that uplink information can be sent to the first transmission station through precoding information corresponding to the fourth resource and through the fourth antenna port set; or determining the fourth resource according to the index of the fourth cell and the index of the fourth resource in the first transmission resource set, so that uplink information can be sent to the first transmission station through precoding information corresponding to the fourth resource and through the fourth antenna port set; or determining the sixth resource according to the index of the fifth cell and the index of the sixth resource in the second transmission resource set, so that uplink information can be sent to the second transmission station through precoding information corresponding to the sixth resource and through the third antenna port set; or determining the eighth resource according to the index of the sixth cell and the index of the eighth resource in the second transmission resource set, so that uplink information can be sent to the second transmission station through precoding information corresponding to the eighth resource and through the fourth antenna port set. Therefore, in the aggregation UE transmission scenario of the multi-TRP multi-antenna panel, the implementation supports uplink transmission that jointly indicates the first terminal device and the second terminal device through the same downlink control information, so that signaling overhead can be saved.

In one possible implementation, if the second resource corresponds to a second set of antenna ports of the first terminal device and the first resource also corresponds to a third set of antenna ports of the second terminal device, the second resource also corresponds to a fourth set of antenna ports of the second terminal device.

Based on the implementation, the same transmission resource in the first transmission resource set may respectively correspond to antenna panels of different terminal apparatuses, so as to support multiplexing indication of the resource for uplink transmission of the multi-aggregation UE. For example, the first resource may indicate transmission by the first terminal device through the first set of antenna ports and indicate transmission by the second terminal device through the third set of antenna ports; as another example, the second resource may indicate transmission of the first terminal device through the second set of antenna ports and indicate transmission of the second terminal device through the fourth set of antenna ports.

In one possible implementation, the first terminal device may further determine a third resource, where the third resource corresponds to a second set of antenna ports of the first terminal device, the third resource is included in a second set of transmission resources, the second set of transmission resources corresponds to a second transmission site, the third resource further corresponds to a fourth set of antenna ports, the second set of transmission resources further includes a fourth resource, and the fourth resource corresponds to the first set of antenna ports and the third set of antenna ports. The first terminal device may further send second information through the second antenna port set according to the precoding information corresponding to the third resource.

Based on the implementation manner, the first terminal device can send uplink information to different two transmission stations through the two antenna port sets respectively through the precoding information corresponding to the first resource and the precoding information corresponding to the third resource, so that the communication capacity can be improved.

In one possible implementation, the first terminal device may further receive second control information, where the second control information includes at least one of the following information: an index of a first cell and an index of a first resource in a first set of transmission resources, the first cell belonging to a first transmission site; an index of a second cell and an index of a third resource in the first set of transmission resources, the second cell belonging to a second transmission site.

Based on this implementation, the first terminal device may implement: the first resource is determined according to the index of the first cell and the index of the first resource in the first transmission resource set, and/or the third resource is determined according to the index of the second cell and the index of the third resource in the second transmission resource set, so that accurate indication and determination of the resources can be realized, uplink transmission of the UE to different transmission sites by adopting different antenna panels is realized, and communication efficiency and uplink capacity are improved. When the second control information contains the two contents, multiplexing indication of aggregation transmission of the same control information to different antenna panels can be realized, and signaling overhead can be reduced.

In one possible implementation, the first terminal device may send the first information through a ninth resource, where the ninth resource is further used for the second terminal device to send the first information through the third set of antenna ports.

Based on the implementation manner, the first terminal device and the second terminal device can transmit the same uplink information on the same resource through respective antenna panels, so as to realize CJT transmission, realize uplink power gain and diversity gain, and reduce interference among uplink transmission UEs.

In one possible implementation, the first terminal device may further receive a first correspondence, where the first correspondence includes a correspondence between the first resource and the first set of antenna ports.

Based on the implementation manner, the first terminal device can configure the first corresponding relation according to the received signaling, realize efficient configuration of the first corresponding relation, and realize efficient determination of the first antenna port set.

In a second aspect, a communication method is provided. The method may be implemented by a network device or a component in a network device, which may also be referred to as a communication apparatus. The component in the present application may include, for example, at least one of a chip, a chip system, a processor, a transceiver, a processing unit, or a transceiver unit. Taking the example that the execution subject is a network device, the method can be realized by the following steps: the network device may send first control information, where the first control information includes an index of a first cell and an index of a first resource in a first transmission resource set, where the first cell belongs to a first transmission site, the first resource corresponds to a first antenna port set of a first terminal device, and the first transmission resource set corresponds to the first transmission site; wherein the first set of transmission resources further comprises a second resource; the second resource corresponds to a second set of antenna ports of the first terminal device, the first resource also corresponds to a third set of antenna ports of the second terminal device, or the second resource corresponds to a third set of antenna ports of the second terminal device.

In one possible implementation, the second resource corresponds to a third set of antenna ports of a second terminal device, the first set of transmission resources further includes a third resource, the third resource corresponds to the second set of antenna ports of the first terminal device, and the first set of transmission resources further includes a fourth resource, the fourth resource corresponds to the fourth set of antenna ports of the second terminal device.

In one possible implementation manner, the second resource corresponds to a third antenna port set of the second terminal device, the first control information further includes an index of a second cell and an index of a fifth resource in the second transmission resource set, the second cell belongs to the second transmission site, the fifth resource corresponds to a second antenna port set of the first terminal device, the fifth resource belongs to a second transmission resource set, the second transmission resource set corresponds to the second transmission site, and the second transmission resource set further includes a sixth resource, the sixth resource corresponds to a fourth antenna port set of the second terminal device.

In a possible implementation manner, the network device includes the second transmission station, and the network device may further receive second information according to precoding information corresponding to the fifth resource, where the second information is sent by the first terminal device through the second antenna port set.

In one possible implementation, the second set of transmission resources further includes a seventh resource, the seventh resource corresponding to the first set of antenna ports, the second set of transmission resources further includes an eighth resource, the eighth resource corresponding to the third set of antenna ports.

In one possible implementation, the first control information is included in first downlink control information, and the first downlink control information further includes at least one of the following information: an index of a third cell and an index of the second resource in the first set of transmission resources, the third cell belonging to the first transmission site; an index of a fourth cell and an index of the fourth resource in the first set of transmission resources, the fourth cell belonging to the first transmission site; an index of a fifth cell and an index of the sixth resource in the second set of transmission resources, the fifth cell belonging to the second transmission site; an index of a sixth cell and an index of the eighth resource in the second set of transmission resources, the sixth cell belonging to the second transmission site.

In one possible implementation, the second resource corresponds to a second set of antenna ports of the first terminal device, the first resource also corresponds to a third set of antenna ports of a second terminal device, and the second resource also corresponds to a fourth set of antenna ports of the second terminal device.

In one possible implementation manner, the first control information further includes an index of a second cell and an index of a third resource in the first set of transmission resources, where the second cell belongs to the second transmission site, the third resource corresponds to a second set of antenna ports of the first terminal device, the third resource is included in the second set of transmission resources, the second set of transmission resources corresponds to the second transmission site, the third resource further corresponds to the fourth set of antenna ports, and the second set of transmission resources further includes a fourth resource, where the fourth resource corresponds to the first set of antenna ports and the third set of antenna ports.

In a possible implementation manner, the network device includes the second transmission site, and the network device may further receive second information through precoding information corresponding to the third resource, where the second information is sent by the first terminal device through the second antenna port set.

In a possible implementation manner, the network device includes the first transmission site, and the network device may further receive first information through precoding information corresponding to the first resource, where the first information is sent by the first terminal device through the first antenna port set.

In a possible implementation manner, the first information is carried on a ninth resource, and the ninth resource is further used for the second terminal device to send the first information through the third antenna port set.

In one possible implementation, the network device may further send a first correspondence, where the first correspondence includes a correspondence between the first resource and the first set of antenna ports.

In a third aspect, a communication device is provided. The apparatus may implement the method of any of the possible designs of the first aspect or the second aspect. The device has the functions of the network equipment or the first terminal device. The means are, for example, terminal devices, or functional modules in network devices or network devices, etc.

In an alternative implementation manner, the apparatus may include modules corresponding to each other in performing the methods/operations/steps/actions described in the first aspect or the second aspect, where the modules may be hardware circuits, or software, or implemented by using hardware circuits in combination with software. In an alternative implementation, the apparatus includes a processing unit (sometimes also referred to as a processing module) and a communication unit (sometimes also referred to as a transceiver module, a communication module, etc.). The transceiver unit can realize a transmission function and a reception function, and may be referred to as a transmission unit (sometimes referred to as a transmission module) when the transceiver unit realizes the transmission function, and may be referred to as a reception unit (sometimes referred to as a reception module) when the transceiver unit realizes the reception function. The transmitting unit and the receiving unit may be the same functional module, which is called a transceiver unit, and which can implement a transmitting function and a receiving function; or the transmitting unit and the receiving unit may be different functional modules, and the transceiver unit is a generic term for these functional modules.

For example, when the apparatus is used to perform the method described in the first or second aspect, the apparatus may comprise a communication unit and a processing unit.

In a fourth aspect, embodiments of the present application also provide a communications apparatus comprising a processor for executing a computer program (or computer executable instructions) stored in a memory, which when executed causes the apparatus to perform a method as in the first or second aspect and its respective possible implementations.

In one possible implementation, the processor and memory are integrated together;

in another possible implementation, the memory is located outside the communication device.

The communication device also includes a communication interface for the communication device to communicate with other devices, such as the transmission or reception of data and/or signals. By way of example, the communication interface may be a transceiver, circuit, bus, module, or other type of communication interface.

In a fifth aspect, there is provided a computer readable storage medium storing a computer program or instructions which, when executed, cause the method of the first or second aspect and any possible implementation thereof to be carried out.

In a sixth aspect, there is provided a computer program product containing instructions which, when run on a computer, cause the method of the first or second aspect and any possible implementation thereof to be carried out.

In a seventh aspect, embodiments of the present application further provide a communication device configured to perform the method in the first aspect or the second aspect and various possible implementations thereof.

In an eighth aspect, a chip system is provided, where the chip system includes logic (or is understood that the chip system includes a processor, where the processor may include logic, etc.), and may further include an input-output interface. The input-output interface may be used for inputting messages as well as for outputting messages. The input/output interfaces may be the same interface, i.e., the same interface can implement both a transmitting function and a receiving function; or the input/output interface comprises an input interface and an output interface, wherein the input interface is used for realizing a receiving function, namely, receiving a message; the output interface is used for implementing the sending function, i.e. for sending messages. Logic circuitry may be operative to perform operations other than transceiver functions in the methods of the first or second aspects and any possible implementation thereof; the logic may also be used to transmit messages to the input-output interface or to receive messages from other communication devices from the input-output interface. The system on a chip may be used to implement the method of the first or second aspect described above and any possible implementation thereof. The chip system may be formed of a chip or may include a chip and other discrete devices.

Optionally, the system on a chip may further include a memory, the memory being operable to store instructions, the logic circuit being operable to invoke the instructions stored in the memory to implement the corresponding functionality.

A ninth aspect provides a communication system which may comprise at least one terminal device and a network apparatus, any terminal device being operable to perform a method as described in the first aspect and any possible implementation thereof, and the network apparatus being operable to perform a method as described in the second aspect and any possible implementation thereof.

Technical effects brought about by the second to ninth aspects may be referred to the description of the first aspect, and are not repeated here.

Drawings

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

fig. 2 is a schematic flow chart of a communication method according to an embodiment of the present application;

Fig. 3A is a schematic diagram of an aggregate UE transmission architecture with multiple TRP multiple antenna port sets according to an embodiment of the present application;

fig. 3B is a flow chart of another communication method according to an embodiment of the present application;

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

fig. 5 is a flow chart of another communication method according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a communication device according to an embodiment of the present application;

Fig. 7 is a schematic structural diagram of another communication device according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of another communication device according to an embodiment of the present application.

Detailed Description

The embodiment of the application provides a communication method and device. The method and the device are based on the same inventive concept, and because the principles of solving the problems by the method and the device are similar, the implementation of the device and the method can be referred to each other, and the repetition is not repeated. In the description of the embodiment of the present application, "and/or" describing the association relationship of the association object indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship. At least one in reference to the present application means one or more; plural means two or more. In addition, it should be understood that in the description of the present application, the words "first," "second," and the like are used merely for distinguishing between the descriptions and not for indicating or implying any relative importance or order.

The communication method provided by the embodiment of the application can be applied to a fourth generation (4th generation,4G) communication system, such as a long term evolution (long term evolution, LTE) communication system, a fifth generation (5th generation,5G) communication system, such as a 5G New Radio (NR) communication system, or various future communication systems, such as a sixth generation (6th generation,6G) communication system. The method provided by the embodiment of the application can be also applied to a Bluetooth system, a WiFi system, a LoRa system or a car networking system. The method provided by the embodiment of the application can also be applied to a satellite communication system, wherein the satellite communication system can be integrated with the communication system.

In order to facilitate understanding of the embodiments of the present application, an application scenario used in the present application will be described by taking a communication system architecture shown in fig. 1 as an example. Referring to fig. 1, a communication system 100 includes a network device 101 and a terminal device 102. The apparatus provided by the embodiment of the present application may be applied to the network device 101 or applied to the terminal device 102. It will be appreciated that fig. 1 illustrates only one possible communication system architecture in which embodiments of the present application may be applied, and that other devices may be included in the communication system architecture in other possible scenarios.

The network device 101 is a node in a radio access network (radio access network, RAN), which may also be referred to as a base station, and may also be referred to as a RAN node (or device). Currently, some access network devices are exemplified by: a gNB/NR-NB, macro base station, micro base station, indoor station, transmission and reception point (transmission reception point, TRP), evolved Node B (eNB), radio network controller (radio network controller, RNC), node B (NB), base station controller (base station controller, BSC), base transceiver station (base transceiver station, BTS), home base station (e.g., home evolved NodeB, or home Node B, HNB), baseband unit (BBU), or wireless fidelity (WIRELESS FIDELITY, wifi) access point (access point, AP), satellite device, radio controller in a relay Node, donor Node, cloud radio access network (cloud radio access network, CRANN) scenario, vehicle outside connection (vehicle to everything, V2X) technology, or network device in a 5G communication system, or access network device or module of devices in an open access network (ORAN) system, or network device in a future possible communication system. The network device 101 may be another device having a network device function, for example, the network device 101 may be a device-to-device (D2D) communication, a vehicle networking communication, or a machine communication serving as a network device function. Network device 101 may also be a network device in a future possible communication system. It is understood that the plurality of access network devices in the communication system may be of the same type or of different types.

In some deployments, the gNB may include a centralized unit (centralized unit, CU) and DUs. The gNB may also include a Radio Unit (RU). The CU implements part of the functions of the gNB, the DU implements part of the functions of the gNB, for example, the CU implements the functions of a radio resource control (radio resource control, RRC), a packet data convergence layer protocol (PACKET DATA convergence protocol, PDCP) layer, and the DU implements the functions of a radio link control (radio link control, RLC), a medium access control (MEDIA ACCESS control, MAC), and a Physical (PHY) layer. Since the information of the RRC layer may be eventually changed into or converted from the information of the PHY layer, under this architecture, higher layer signaling, such as RRC layer signaling or PHCP layer signaling, may also be considered as being transmitted by the DU or by the du+ru. It is understood that the network device may be a CU node, or a DU node, or a device comprising a CU node and a DU node. In addition, the CU may be divided into network devices in the access network RAN, or may be divided into network devices in the core network CN, which is not limited herein. In ORAN systems, a CU may also be referred to as an O-CU, a DU may also be referred to as an open (O) -DU, a CU-CP may also be referred to as an O-CU-CP, a CU-UP may also be referred to as an O-CUP-UP, and a RU may also be referred to as an O-RU.

The terminal device 102, which may be referred to as a User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (MT), etc., is a device that provides voice or data connectivity to a user, and may also be an internet of things device. For example, the terminal device includes a handheld device having a wireless connection function, an in-vehicle device, and the like. Currently, the terminal device may be: a mobile phone, tablet, laptop, palmtop, mobile internet device (mobile INTERNET DEVICE, MID), wearable device (e.g., smart watch, smart bracelet, pedometer, etc.), on-board device (e.g., car, bicycle, electric car, airplane, boat, train, high-speed rail, etc.), virtual Reality (VR) device, augmented reality (augmented reality, AR) device, wireless terminal in industrial control, smart home device (e.g., refrigerator, television, air conditioner, electric meter, etc.), smart robot, workshop device, wireless terminal in unmanned, wireless terminal in teleoperation, wireless terminal in smart grid (SMART GRID), wireless terminal in transportation security, wireless terminal in smart city, or wireless terminal in smart home, flying device (e.g., smart robot, hot air balloon, drone, airplane), etc. The terminal device may also be other devices with terminal functions, for example, the terminal device may also be a device functioning as a terminal function in D2D communication. In the application, the terminal equipment with wireless receiving and transmitting function and the chip capable of being arranged on the terminal equipment are collectively called as the terminal equipment.

The following describes in detail a communication method provided by an embodiment of the present application with reference to the communication system shown in fig. 1.

In order to better understand the solution provided by the embodiments of the present application, some terms, concepts or flows related to the embodiments of the present application are described below.

1. Uplink communication and downlink communication

In a wireless communication system, communications can be classified into different types according to the kinds of transmitting nodes and receiving nodes. The network device is generally referred to as a Downlink (DL) communication, and the UE is generally referred to as an Uplink (UL) communication.

2. Communication resource

In the present application, the communication resources may include an uplink resource for performing uplink communication and a downlink resource for performing downlink communication. In the present application, unless specifically stated, a resource refers to a combination of a time-frequency resource, i.e., a time-domain resource and a frequency-domain resource.

3. Uplink transmission indication

In the NR system, the network device may estimate the quality of an uplink channel by measuring a Sounding REFERENCE SIGNAL (SRS) sent by the terminal, and may also use the SRS to manage an uplink beam. In the uplink transmission process, the network device may jointly indicate a transmission port and a precoding matrix through an SRS resource indication (SRS resource indicator, SRI) field and a transmission precoding matrix indication (TRANSMITTED PRECODING MATRIX INDICATOR, TPMI) field in downlink control information (downlink control information, DCI) according to the measurement result, and be used for the UE to transmit PUSCH through the indicated transmission port and the precoding matrix.

4. Beam

A beam may be considered a communication resource. The beam may be a wide beam, or a narrow beam, or other type of beam. Different beams may be considered different resources. The same information or different information may be transmitted through different beams. A beam may be formed by one or more antenna ports. The beam may be used to transmit data channels, control channels, or sounding signals, etc. One or more antenna ports forming a beam may be considered as a set of antenna ports. The beam may be represented by an identification of signals, e.g., a resource index of a channel state information reference signal (CHANNEL STATE information REFERENCE SIGNAL, CSI-RS), a resource index of a synchronization signal broadcast channel block (synchronous signal block, SSB), a resource index of an SRS, or a resource index of a tracking reference signal (TRACKING REFERENCE SIGNAL, TRS), etc.

5. Multi-TRP transmission

TRP is understood to be a physical transceiving point of a cell, which can be jointly covered by a plurality of TRPs, thereby increasing the coverage radius of the cell, i.e. the transmission scheme of multiple TRP transmissions. The multi-TRP transmission may be described in the present application as a plurality of transmission reception points, mTRP, multi-TRP, or multi-TRP.

The third generation partnership project (3rd generation partnership project,3GPP) protocol release (R) 17 protocol has supported PUSCH retransmission using a single DCI (SINGLE DCI, S-DCI) information to instruct a single UE (single UE) in a multi-TRP scenario, and supports separate beam indication and power control for each TRP, i.e., the UE transmits PUSCH to two TRPs, respectively. The specific indication scheme is that the network device configures two sounding reference signal resource sets (SRS resource sets) for the UE, where the two SRS resource sets are respectively associated with two TRPs, each SRS resource set includes at least one SRS resource (SRS resource), and each SRS resource can be distinguished by an SRS resource Identifier (ID). Each SRS resource set may be associated with one SRI and/or TPMI field.

In a multi-TRP transmission scenario indicated by S-DCI, a network device may implement dynamic switching of mTRP transmission and single TRP transmission, indicated by different DCI code points (codepoint). The network device may further associate a plurality of SRI and TPMI fields in the S-DCI with different TRPs, respectively, to implement a transmission indication for the different TRPs. For example, the network device may indicate PUSCH ports and precoding matrix information corresponding to TRP1 and TRP2, respectively, through two SRI fields and two TPMI fields included in the DCI. The UE may indicate TRP1 for uplink transmission through one of the SRI field and the TPMI field, and indicate TRP2 for uplink transmission using the other of the SRI field and the TPMI field. Wherein the DCI may be transmitted by the network device through TRP1 and/or TRP2, or the network device may be said to include TRP1 and/or TRP2.

For example, the SRI field and TPMI field in the multi-TRP scenario may satisfy:

(1) The number of transport layers (layers) indicated by the plurality of SRI fields is the same. For example, in the two SRI fields, the first SRI field indicates an SRS resource index (SRS resource ID) and a transmission layer number, the second SRI field indicates the SRS resource index without indicating the transmission layer number, and the transmission layer number corresponding to the second SRI field is the same as the transmission layer number indicated by the first SRI field by default, so that the cost of DCI indication is saved.

(2) The number of transport layers indicated by the plurality of TPMI fields is the same. For example, among two TPMI fields, a first TPMI field indicates index information of TPMI and the number of layers of transmission; the second TPMI field contains only index information of TPMI, where the number of transmission layers is the same as the first TPMI indication.

As shown in tables 1 and 2, the mapping relation table between the first SRI and the second SRI fields and the SRS resource ID is respectively represented as a maximum number of transmission layers under non-codebook uplink transmission is 2 (i.e. the maximum rank (rank) number is 2). Table 1 can be found in third Generation partnership project (3rd generation partnership project,3GPP) technical Specification (TECHNICAL SPECIFICATION, TS) 38.212 section 7.3.1.1. As for the first SRI field, as can be seen from table 1, if each SRS resource set includes 4 SRS resources (i.e., N _SRS =4), that is, the fifth column and the sixth column in table 1, the first SRI field of the DCI may use 4 bits (bit) information to indicate a port used for transmitting PUSCH to TRP1 (i.e., indicate SRS resource ID) and the number of transmission layers. Wherein 4 bits may indicate bit field mapping indexes (bits FIELD MAPPED to index) 0-15. For example, when ^N _SRS＝⁴, a bit field mapping index of 1 indicates that the number of transmission layers is 1 and the corresponding SRS resource ID is 1; a bit field mapping index of 4 indicates that the number of transmission layers is 2 and the corresponding SRS resource IDs are 0 and 1, respectively. For the second SRI field, if each SRS resource set includes 4 SRS resources, the second SRI field may use 3bit information to indicate a port and a transmission layer number used for transmitting PUSCH to TRP2, where the transmission layer number indicated by the second SRI field may be considered to be the same as the transmission layer number indicated by the first SRI field, so that the second SRI field is not required to indicate the transmission layer number, that is, the 3bit information only needs to indicate a port used for transmitting PUSCH to TRP 2. For example, as shown in table 2, when N _SRS =4, a bit field mapping index of 1 indicates that the number of transmission layers is 1 and the corresponding SRS resource ID is 1, or indicates that the number of transmission layers is 2 and the corresponding SRS resource IDs are 0 and 1, respectively, where a transmission port specifically indicated when the bit field mapping index of 1 in the second SRI field is required to be determined according to the number of transmission layers indicated by the first SRI field. Assuming that the bit field mapping index in the first SRI field is 1 when N _SRS =4, that is, indicates that the number of transmission layers is 1, the bit field mapping index in the second SRI field is 1 when N _SRS =4 indicates that the number of transmission layers is 1 and the corresponding SRS resource ID is 1. For another example, when N _SRS = 4, if the number of transmission layers indicated by the first SRI field is 1 and the second SRI field bit field mapping index is 1, the second SRI field bit field mapping index is 1 indicating that the number of transmission layers is 2 and the corresponding SRS resource IDs are 0 and 2, respectively.

TABLE 1

TABLE 2

In addition, for the scenario of single DCI indication mTRP uplink PUSCH transmission, the network device may activate two corresponding UL transmission control indication (transmission configuration indication, TCI) states (states) (which may be simply referred to as TCI states) in one DCI codepoint through a MAC Control Element (CE), that is, the DCI sent by the network device carries two TCI states, where the TCI states may be used to control uplink PUSCH transmission to two TRPs. The TCI state is associated with the SRS resource ID, and is used to determine the beam direction of PUSCH transmission, and indicates which TRP the PUSCH is transmitted to. Illustratively, the TCI-UL-State-r17 information element (information element, IE) in RRC signaling may contain a variety of TCI State information based on Table 1.2.1-1 in 3GPP TS 38.331 (as shown in Table 3). Different TCI state information may be distinguished by a TCI state identifier, and optionally, the network device may be configured to indicate the TCI state information by DCI indication TCI STATE ID. As shown in table 3, SERVINGCELLID-r17 indicates cell index (cell ID) information for controlling to which TRP the uplink data is transmitted, REFERENCESIGNAL-r17 indicates a reference signal resource index associated with the TCI, which may include a SSB, CSI-RS, or SRS resource index, that is, indicates that the UE PUSCH transmission may employ the same spatial filtering (or referred to as a precoding matrix) as the indicated SRS resource ID, thereby indicating a beam direction. Note that in general, one beam corresponds to one TCI state or one SRI.

TABLE 3 Table 3

6. Multi-antenna panel transmission

An antenna panel may be used to describe a set of antennas or a set of antenna ports; the transmit beams formed by antennas belonging to different antenna panels can be adjusted independently. In the present application, the UE may have a plurality of antenna panels, and the transmission by the UE through the plurality of antenna panels may be referred to as multi-Panel, mPanel, multi-Panel, multi-antenna Panel, or the like.

7. Uplink UE aggregate transmissions

In uplink communications, a cell edge UE is generally limited by uplink transmission power, resulting in a reduction in transmission rate, which cannot meet the requirements of high-rate services, such as high-definition video backhaul services. By the multi-UE cooperative transmission or aggregation transmission technology, the power of two or more UEs can be aggregated together to perform data transmission, so that the power gain is obtained, and the uplink transmission rate is improved. The core idea of UE aggregate transmission is that one or more UEs (which may be referred to as coordinated users (cooperation UEs, CUEs)) assist another one or more UEs (which may be referred to as Service Users (SUEs)) to transmit service data, which is equivalent to transmitting uplink data of the SUE by using the transmission power and antennas of the CUEs. The transmission modes of the aggregate transmission may include a non-coherent joint transmission mode (non-coherent joint transmission, NCJT), a coherent joint transmission mode (coherent joint transmission, cqt). It is to be appreciated that one or more CUEs can facilitate SUE transmission of traffic data to obtain power gain, multiplexing, and diversity gain.

The cqt uses coherent transmission, and signals sent by a plurality of aggregation UEs in the coherent transmission are coherently superimposed, that is, two or more vector signals are superimposed in the same direction. A strong coherence indicates a strong signal power of the superposition of two or more vectors and a weak coherence indicates a weak signal power of the superposition of two or more vectors. NCJT adopts a non-coherent superposition mode of signals for transmission. And NCJT employs incoherent transmission.

Based on the foregoing description, in multi-TRP transmission, a network device may implement transmission indication of one UE for different TRPs through S-DCI. However, when the UE uses a multi-antenna panel for transmission, the existing S-DCI indication scheme cannot realize transmission indication when the aggregated UE uses the multi-antenna panel for transmission to multiple TRPs, and there is a limitation in the transmission indication mode.

In order to support the aggregate UE to transmit to multiple TRPs by using multiple antenna panels, the embodiment of the present application provides a communication method. The method is described below in connection with fig. 2. Fig. 2 illustrates an example in which the execution subject is a terminal device. The terminal device may comprise the terminal device shown in fig. 1 or comprise components in the terminal device, such as a processor, a chip, a processing unit, or a communication unit, etc.

The communication method may include the steps of:

S101: the first terminal device determines a first resource corresponding to a first set of antenna ports of the first terminal device, the first resource included in a first set of transmission resources corresponding to a first transmission site.

In S101, the first set of transmission resources may further include a second resource. Wherein the second resource corresponds to a second set of antenna ports of the first terminal device, the first resource also corresponds to a third set of antenna ports of the second terminal device; or the second resource corresponds to a third set of antenna ports of the second terminal device. That is, the resources in the first set of transmission resources correspond to respective antenna panels of the plurality of terminal devices, and thus may support multi-TRP and/or multi-antenna panel transmissions by the plurality of terminal devices.

In the present application, each antenna port set may include at least one antenna port therein. For example, if a dual polarization arrangement is used, two antenna ports may be included in the antenna port set. The antenna ports in the same antenna port set belong to the same antenna panel, and the ports in different antenna port sets belong to different antenna panels, so that the antenna port set can be replaced by the antenna panel or the antenna ports belonging to the same antenna panel.

In addition, the resources in the transmission resource set in the present application are reference signal resources, for example, SRS resources. Illustratively, the resources in the first set of transmission resources correspond to different SRS resource IDs, that is, the first and second resources may correspond to different SRS resource IDs. Optionally, the resources in the same set of transmission resources correspond to the same transmission site. The transmission site is, for example, a TRP.

As described in the present application for uplink transmission indication, the SRI field and the TPMI field in the DCI may jointly indicate transmission of the terminal PUSCH, that is, indicate antenna port set information and precoding information. Precoding information such as precoding matrix information, or uplink transmit side spatial filtering (UL Tx SPATIAL FILTER). It may be understood that the fact that the resources in the transmission resource set correspond to the antenna port set means that there is a correspondence between the resources in the transmission resource set and the antenna port set, and when the network device indicates the resources in the transmission resource set, the terminal device may send a signal through the antenna port in the antenna port set corresponding to the transmission resource set and use the precoding information corresponding to the resources.

Alternatively, in S101, the first terminal apparatus may determine the first resource according to control information from the network device. For example, the first terminal apparatus may determine the first resource according to DCI. For example, the DCI may include a resource index of the first resource. The DCI may further include indication information of the first transmission site, e.g., a cell index corresponding to the first transmission site. As a possible example, the first terminal device may receive DCI from the network device, where the DCI may carry a TCI state field, where the DCI includes a cell index corresponding to the first transmission site and a resource index of the first resource, and the first terminal device may determine the first set of transmission resources according to the cell index corresponding to the first transmission site, and determine the first resource from the first set of transmission resources according to the resource index.

Optionally, in the present application, the first terminal device may receive a first correspondence from the network device, where the first correspondence may include a correspondence between the first resource and the first antenna port set. Accordingly, the first terminal device may determine that the first resource corresponds to the first antenna port set according to the first correspondence after determining the first resource, and thus may determine to transmit uplink information through the first antenna port set. Alternatively, the first correspondence may be configured by the network device through RRC signaling, MAC CE, or DCI, or may be preconfigured or predefined through other means. Wherein the predefined includes being defined in a protocol such as 3 GPP.

Optionally, the first terminal device may further receive a second correspondence from the network device, where the second correspondence may include a correspondence between at least one of the first transmission site and the first set of transmission resources and a first cell, where the first cell belongs to the first transmission site, or the first cell belongs to the first transmission site. The first terminal device may thus determine to transmit uplink information to the first transmission station based on the second correspondence after determining the serving cell. The serving cell may be determined according to a serving cell identifier, such as a cell index. The serving cell identity may be carried in DCI which may be used to indicate an uplink transmission of the network device, or alternatively, the DCI may be used to determine the first resource. Alternatively, the second correspondence may be configured by the network device through RRC signaling, MAC CE, or DCI, or may be preconfigured or predefined through other means. Wherein the predefined includes being defined in a protocol such as 3 GPP.

Alternatively, either one of the first terminal apparatus and the second terminal apparatus may be regarded as a SUE, and the other may be regarded as a CUE. Optionally, the SUE and the CUE may send service data of the SUE through the communication method provided by the present application. The SUE and the CUE may communicate through wired and/or wireless interfaces such as a sidelink (sidelink), bluetooth (bluetooth), a universal serial bus (universal serial bus, USB) interface, etc., so that the CUE obtains service data of the SUE. The application does not require any specific requirements for the communication mode between the SUE and the CUE.

The possible correspondence between the resources in the first set of transmission resources, the set of antenna ports of the first terminal device, and the set of antenna ports of the second terminal device, and the manner in which the first terminal device determines the first resources are described below in conjunction with tables 4 and 6, respectively.

Wherein in the examples shown in tables 4 and 6, the first terminal apparatus and the second terminal apparatus respectively include 2 sets of antenna ports. For convenience of explanation, the antenna port set of the first terminal device is denoted as an antenna port set 1 and an antenna port set 2, the antenna port set of the second terminal device is denoted as an antenna port set 3 and an antenna port set 4, and in practical application, the antenna port set of the first terminal device and the antenna port set of the second terminal device may be respectively numbered, for example, the antenna port set of the first terminal device is denoted as an antenna port set 0 and an antenna port set 1, and the antenna port set of the second terminal device is denoted as an antenna port set 0 and an antenna port set 1.

In the examples shown in tables 4 and 6, at least TRP1 (corresponding to the first transmission site) and TRP2 (corresponding to the second transmission site) are present in the current multi-TRP scenario of the first terminal apparatus and the second terminal apparatus, and TRP1 and TRP2 correspond to SRS resource set 1 (corresponding to the first transmission resource set) and SRS resource set 2 (corresponding to the second transmission resource set), respectively, and SRS resource set 1 and SRS resource set 2 include a plurality of SRS resources, respectively.

As shown in table 4, the resources in the first transmission resource set correspond to the first terminal device and the second terminal device, and the resources corresponding to the first terminal device are different from the resource indexes corresponding to the second terminal device; the resources in the second set of transmission resources correspond to the first terminal device and the second terminal device, and the resources corresponding to the first terminal device are different from the resource index corresponding to the second terminal device.

TABLE 4 Table 4

As shown in table 4, in one possible example, SRS resource set 1 may include a first resource, a second resource, a third resource, and a fourth resource. The SRS resource set 2 may include a fifth resource, a sixth resource, a seventh resource, and an eighth resource. Wherein the first resource, the second resource, the third resource and the fourth resource have different SRS resource IDs, respectively, and the fifth resource, the sixth resource, the seventh resource and the eighth resource have different SRS resource IDs, respectively, for example, a certain resource corresponds to one SRS resource ID, that is, corresponds to one antenna port set, respectively. The resources in SRS resource set 1 and the resources in SRS resource set 2 may have the same or different SRS resource identifications. For example, the resources in SRS resource set 1 and the resources in SRS resource set 2 may each take a number from small to large starting from 0 as the SRS resource ID, and thus different SRS resources may be distinguished by the SRS resource set and the SRS resource identification.

Based on table 4, it can be seen that a first resource may correspond to antenna port set 1 of a first terminal device, a second resource may correspond to antenna port set 3 of the second terminal device, a third resource corresponds to antenna port set 2 of the first terminal device, and a fourth resource corresponds to antenna port set 4 of the second terminal device.

Further, as shown in table 4, in SRS resource set 2, the fifth resource may correspond to antenna port set 1 of the first terminal device, the sixth resource may correspond to antenna port set 4 of the second terminal device, the seventh resource may correspond to antenna port set 1 of the first terminal device, and the eighth resource may correspond to antenna port set 3 of the second terminal device. Thus, when the first terminal device determines the fifth resource, the first terminal device may transmit information through the antenna port set 2 using precoding information corresponding to the fifth resource.

Based on the example shown in table 4, the first terminal apparatus may receive first control information, where the first control information may include an index of a first cell and an index of a first resource in SRS resource set 1, where the first cell may be a cell of TRP1, or the first cell belongs to TRP1. The first terminal device may determine that a TRP corresponding to the first cell is TRP1 according to a known correspondence between an index of the cell and the TRP, further determine that a transmission resource set corresponding to the TRP1 is SRS resource set 1, and determine the first resource from at least one SRS resource included in the SRS resource set 1 according to an index of the first resource in the SRS set 1. Or the first terminal device may determine that the first cell corresponds to the SRS resource set 2 according to the correspondence between the index of the cell and the transmission resource set, and determine the first resource from at least one SRS resource included in the SRS resource set 1 according to the index of the first resource in the SRS set 1. After determining the first resource from the at least one SRS resource included in the SRS resource set 1, further, the first terminal apparatus may determine that the first resource corresponds to the antenna port set 1 according to the correspondence shown in table 4, and thus may determine to transmit the first information to the TRP1 through the antenna ports in the antenna port set 1.

Optionally, the first control information may further include an index of the second cell and an index of the fifth resource in the SRS resource set 2. The method may be similar to the method in which the first terminal device determines, according to the index of the first cell in the first control information and the index of the first resource in the SRS resource set 1, that the first information is transmitted to the TRP1 through the antenna ports in the antenna port set 1, the first terminal device may determine, according to the index of the second cell, that the TRP corresponding to the second cell is TRP2, and determine that the transmission resource set corresponding to the TRP2 is SRS resource set 2, and further, the first terminal device may determine, according to the index of the fifth resource in the SRS resource set 2, the fifth resource from at least one SRS resource included in the SRS resource set 2. According to the correspondence relationship shown in table 4, it is determined that the fifth resource corresponds to the antenna port set 2, and therefore the first terminal device may determine to transmit the second information to TRP2 through the antenna ports in the antenna port set 2 using the precoding information corresponding to the fifth resource.

It will be appreciated that the first information and the second information in the present application are sent to two TRPs by two antenna port sets of the first terminal device, respectively, for example, the first information is sent to TRP1 by one antenna port set and the second information is sent to TRP2 by the other antenna port set. Optionally, if the two antenna port sets of the first terminal device perform cqt transmission, the first information and the second information may be the same uplink data; in addition, the first information and the second information may be different uplink data.

As a possible implementation manner of the present application, when the first terminal device is instructed to send through the antenna port set 1 according to the precoding information of the first resource in the SRS resource set 1, the network device may carry, in the DCI, the SRS resource ID of the first resource through the SRI, and carry, through the TCI state field, the SRS resource ID of the first resource and/or the serving cell identifier corresponding to the first resource (SERVING CELL ID). The serving cell identification field may carry an index of the cell. That is, the above first control information may be understood to include an SRI field (for indicating an SRS resource ID) in the DCI and/or a TCI state field (for indicating an SRS resource ID and a cell index) in the DCI, or the first control information may be understood to include a and/or DCI carrying the SRI field and the TCI state field. The DCI may further include a TPMI field, configured to carry precoding matrix information corresponding to the first resource.

As an example, TCI state 1 for indicating the index of the first cell and the index of the first resource in SRS resource set 1, SRI 1 for indicating the index of the first resource in SRS resource set 1, TCI state 2 for indicating the index of the second cell and the index of the fifth resource in SRS resource set 2, and SRI2 for indicating the index of the fifth resource in SRS resource set 2 are carried in the same DCI (hereinafter may be referred to as the first DCI). TPMI 1 and TPMI 2 may also be included in the first DCI. Wherein, TCI state 1, SRI 1 and TPMI 1 are related, TCI state 2, SRI2 and TPMI 2 are related. It is understood that the TPMI 1 field may indicate precoding information corresponding to the first resource and/or the TPMI 2 field may indicate precoding information corresponding to the fifth resource.

Similarly, in table 4, if the network device indicates that the first terminal device sends the first terminal device according to the precoding information corresponding to the seventh resource in the SRS resource set 2 and through the antenna port set 1, the network device may carry the SRS resource ID corresponding to the seventh resource in the SRI, carry the SRS resource ID corresponding to the seventh resource and the serving cell identifier in the TCI state, and carry the precoding information corresponding to the seventh resource through the TPMI field. If the network device indicates that the first terminal device sends the precoding information corresponding to the third resource in the SRS resource set 1 through the antenna port set 2, the network device may carry the SRS resource ID corresponding to the third resource in the SRI, carry the SRS resource ID corresponding to the third resource and the serving cell identifier in the TCI state, and carry the precoding information corresponding to the third resource through the TPMI field.

In addition, for the UE aggregation scenario, if the indication scheme of the S-DCI is still used, the first DCI may carry at least one of the following in addition to TCI state1, SRI 1 and TPMI 1 and/or TCI state 2, SRI 2 and TPMI 2 to support the uplink transmission indication of the second terminal device: TCI state 3, SRI 3 and TPMI 3, where TCI state 3 includes an index of a third cell and an index of the second resource in the first transmission resource set, the third cell belongs to the first transmission site, SRI 3 includes an index of the second resource in the first transmission resource set, and TPMI 3 is used to indicate precoding information corresponding to the second resource; TCI state 4, SRI 4 and TPMI 4, where TCI state 4 includes an index of a fourth cell and an index of the fourth resource in the first transmission resource set, the fourth cell belongs to the first transmission site, SRI 4 includes an index of the fourth resource in the first transmission resource set, and TPMI 4 is used to indicate precoding information corresponding to the fourth resource; TCI state 5, SRI5, and TPMI 5, where TCI state 5 includes an index of a fifth cell and an index of the sixth resource in the second transmission resource set, the fifth cell belongs to the second transmission site, SRI5 includes an index of the sixth resource in the second transmission resource set, and TPMI 5 is configured to indicate precoding information corresponding to the sixth resource; TCI state 6, SRI 6 and TPMI 6, where TCI state 6 includes an index of a sixth cell and an index of the eighth resource in the second transmission resource set, the sixth cell belongs to the second transmission site, SRI 6 includes an index of the eighth resource in the second transmission resource set, and TPMI 6 is used to indicate precoding information corresponding to the eighth resource. Therefore, based on the first DCI, S-DCI indication for the first terminal device and the second terminal device can be realized, and signaling overhead can be reduced.

Taking the first DCI further including TCI state3, SRI 3, and TPMI 3 as an example, the second terminal device may determine, according to SRI 3, to use a precoding information transmission signal corresponding to the second resource after receiving the first DCI, further determine, based on an index of a third cell indicated in TCI state3, that the third cell belongs to the first transmission site (i.e. TRP 1), and determine that a transmission resource set corresponding to the first transmission site is the first transmission resource set. Further, the second resource is determined according to the index of the second resource indicated by TCI state3 and/or SRI 3 in the first transmission resource set, and the second resource is determined to correspond to the antenna port set 3 according to the correspondence shown in table 4, so that the second terminal device may determine to send uplink information to TRP1 through the antenna ports in the antenna port set 3 by using the precoding information indicated by TPMI 3. The actions (including determining the antenna port set and the precoding information) performed by the second terminal device when the first DCI further includes TCI state 4, SRI 4 and TPMI 4, TCI state 5, SRI 5 and TPMI 5, or TCI state 6, SRI6 and TPMI 6 may be implemented with reference to the foregoing description, which is not repeated.

Based on table 4, a possible SRI field mapping table for one SRS resource configuration is shown in table 5. For a scenario where the number of aggregated UEs is 2, if the maximum number of SRS resources configured by the SRS resource set to the first terminal device and the second terminal device is 4, a 4-bit SRI field needs to be designed to indicate, and then the existing SRI field may be multiplexed to indicate the aggregated UE transmission. As can be seen from the table, each SRI bit state indicates K SRS resource IDs of one SRS resource set, where K represents the number of UEs in the aggregated UE group, i.e. the sum of the numbers of UEs performing the aggregated transmission (i.e. the aggregated UEs, including the first terminal device and the second terminal device), and K is a positive integer greater than 1. For example, the first and second columns in table 5 represent SRI bit field mapping relationships when 2 SRS resources are included in SRS resource sets of two UEs, where a bit field index of 0 indicates that an SRS resource ID corresponding to UE1 is 0 and an SRS resource ID corresponding to UE2 is 1, that is, precoding information corresponding to a resource indicating that UE1 uses SRS resource id=0 by the network device and precoding information corresponding to a resource indicating that SRS resource id=1 is used by UE 2. Similarly, the third column and the fourth column in table 5 respectively represent the SRI bit field mapping relationship when the SRS resource sets of two UEs each include 3 SRS resources, where a bit field index of 2 indicates that the SRS resource ID corresponding to UE1 is 1 and the SRS resource ID corresponding to UE2 is 0.

Further, the resource mapping order of the SRI field may be indicated by a predefined manner, for example, when the first terminal device is a SUE and the second terminal device is a CUE, the SRS resource identification of the first terminal device is indicated first and then the SRS resource identification of the second terminal device is indicated. Or the aggregation UE ID set in the aggregation UE group can be configured through RRC signaling, and the sequence of SRS resource identification sets indicated by the SRI field corresponds to the configured aggregation UE ID set one by one. For example, the RRC signaling configures the UE ID set of the aggregate UE group to {1,3,5}, and the SRS resource identifier indicated by the SRI field is {0,1,2}, and then three UEs with UE IDs {1,3,5} use antenna ports corresponding to the SRS resource whose SRS resource identifier is {0,1,2} to perform PUSCH transmission respectively. Considering that the SRS Resource configuration manner in this scheme is that the SRS resources configured by the SUE and the CUE in the aggregated UE group are different SRS Resource IDs in the same SRS Resource Set, the SRS Resource indexes of the SUE and the CUE indicated in the mapping table of the designed SRI field are different, for example, in table 5, there is no case that the SRS Resource IDs corresponding to the UE1 and the UE2 are {0,0}, {1,1}, and the like. It will be appreciated that UE1 and UE2 in table 5 may be respectively one of the first terminal device and the second terminal device, for example, UE1 as the first terminal device and UE2 as the second terminal device, or, as another example, UE1 as the second terminal device and UE2 as the first terminal device.

TABLE 5

It will be appreciated that the scenario in table 5 is illustrated with the example of only one UE1 and one UE2 performing the aggregation transmission, and the table may be adaptively extended when there are more UEs performing the aggregation parameters.

UE1 and UE2 may be instructed to transmit over different sets of antenna ports, respectively, via two SRI fields based on table 5,S-DCI. At this time, the DCI may carry two SRI fields and two TCI state fields and two TPMI fields corresponding to the two SRI fields, where each SRI field indicates SRS resource IDs of two UEs, and the two TCI state fields and the two TPMI fields corresponding to the same SRI field correspond to the two UEs, respectively. For example, if the SRS resource set of each UE includes 4 SRS resources (i.e., UE1-N _SRS＝4,UE2-N_SRS =4), when the bit field mapping index of the first SRI field is 0, it indicates that UE1 and UE2 respectively use SRS resources with SRS resource IDs of 0 and 1. Further, UE1 and UE2 may determine respective transmission sites and SRS resource sets corresponding to the transmission sites according to the serving cell identities in the two TCI state fields corresponding to the first SRI field, respectively, and thus may determine respective adopted antenna port sets according to table 4. Similarly, each TPMI field may jointly indicate precoding matrix information of two UEs, and UE1 and UE2 may also determine precoding information corresponding to the antenna port set according to the corresponding first TPMI field. As with the first SRI field, each of the UE1 and the UE2 may further determine the antenna panel and precoding information to be used by each based on the SRS resource ID and the precoding matrix index indicated by the second SRI field and the second TPMI field, where the antenna port set (and/or transmission site) determined by the same UE according to the first SRI field may be different from the antenna port set (and/or transmission site) determined by the same UE according to the second SRI field, so that transmission from the multi-UE multi-antenna panel to the multi-transmission site may be achieved through the two SRI fields. Further, two TCI state fields corresponding to the two SRI fields may also use a joint indication manner, that is, each TCI state field may indicate cell index information corresponding to the antenna port set of UE1 and UE 2. Or the two SRI fields, the two TPMI fields and the four TCI state fields can be carried in the S-DCI to indicate the UE1 and the UE2 to carry out uplink transmission, namely the SRI field and the TPMI field adopt a joint indication mode, and the TCI state field adopts an independent indication mode to respectively indicate the cell index information corresponding to different antenna port sets of the UE1 and the UE2, so that the specific embodiment of the invention is not excessively introduced.

Therefore, based on the examples shown in tables 4 and 5, the network device may carry multiple TCI state fields and SRI fields in the DCI to determine the antenna port set of one or more UEs employed for transmitting signals and the SRS resource ID, and in addition, the DCI middle sea may carry multiple TPMI fields to indicate precoding information corresponding to multiple SRS resources, so as to implement indication of SRS resources, antenna panels and precoding information. The design of the uplink mode of the S-DCI allows the UE to monitor less search space, so that the complexity of blind decoding of the UE and the power consumption of the UE can be reduced. Meanwhile, the scheme supports UE to aggregate CJT and NCJT transmission, can additionally acquire power gain and diversity or multiplexing gain, and improves uplink capacity.

In the UE aggregate transmission scenario of the multiple TRP multiple antenna port sets of the SUE and the CUE, as shown in fig. 3A, the SUE and the CUE each use one antenna port set (e.g., panel 0 of each of the SUE and the CUE) to send uplink information to TRP1, and the SUE and the CUE each use one antenna port set (e.g., panel 1 of each of the SUE and the CUE) to send uplink information to TRP 2. Wherein, if the SUE and the CUE perform CJT transmission, the SUE and the CUE may transmit the same uplink data to the same TRP, and if the SUE and the CUE perform NCJT transmission, the SUE and the CUE may transmit different uplink data to the same TRP.

As shown in table 6, the resources in the first transmission resource set correspond to the first terminal device and the second terminal device, and the same resource corresponds to one antenna panel in the first terminal device and one antenna panel in the second terminal device; the resources in the second set of transmission resources correspond to the second terminal device and the same resources correspond to one antenna panel in the first terminal device and one antenna panel in the second terminal device.

TABLE 6

As shown in table 6, in one possible example, SRS resource set 1 may include a first resource and a second resource. SRS resource set 2 may include a third resource and a fourth resource. The first resource and the second resource respectively have different SRS resource IDs, and the third resource and the fourth resource respectively have different SRS resource IDs. The resources in SRS resource set 1 and the resources in SRS resource set 2 may have the same or different SRS resource identifications. In the example of table 2, each SRS resource set may include 2 SRS resources of 4 antenna ports, denoted as SRS resource ID0 and SRS resource ID01, respectively. Each SRS resource may include a total of 4 port resources from port 0 to port 3, taking a first resource as an example, where port 0 and port 1 of the first resource correspond to antenna port set 1 of the first terminal device, and port 2 and port 3 of the first resource correspond to antenna port set 3 of the second terminal device.

For any embodiment of the present application, for the scenario of UE aggregate CJT transmission, the SUE and the CUE transmit the same data packet, and the SUE and the CUE may be equivalent to a virtual UE, that is, a UE composed of the SUE and the CUE, and the virtual UE may use a joint precoding technology on different antennas to perform uplink data transmission. In this case, the antenna panel for cqt transmission by the UE aggregate may use the same SRS resource, for example, if the antenna capability of the SUE and the CUE is to support 2 antennas, and after the SUE and the CUE aggregate, it may be considered that a virtual UE with the antenna capability of 4 antennas performs uplink transmission, so as to obtain the power gain and the diversity gain. It should be noted that when the same SRS resource is used by the SUE and the CUE, the SUE and the CUE may be enabled to determine the port mapping relationship between the SRS resource and the aggregated UE based on a predefined manner or a manner configured by the network device, etc. One of the SUE and the CUE may be a first terminal device, and the other may be a second terminal device.

The manner in which the SRS resources are configured with the port mapping relation of the aggregated UE by the predefined and network devices, respectively, is described below.

(1) Predefined manner

If a predefined mode is adopted, the SUE and the CUE can be respectively informed of the mapping relation between the SUE and the ports in the SRS resources through modes such as protocol definition or factory setting. An alternative predefined way is a sequential mapping way. The sequential mapping approach may be implemented based on the antenna capabilities of the terminal device, for example. For example, for one antenna panel, the number of antenna ports supported by SUE is N1, and the number of antenna ports of CUE is N2, then the first N1 antenna ports of SRS resources of n1+n2 antenna ports configured by the network device correspond to SUE, and the last N2 antenna ports correspond to CUE; or the first N2 antenna ports of SRS resources correspond to CUE and the last N1 antenna ports correspond to SUE. For example, taking the first resource shown in table 5 as an example, the first 2 port resources (i.e., port 0 and port 1) may be defaulted to correspond to antenna port set 1 of the first terminal device (i.e., SUE), and the last two pants of the first resource may be defaulted to correspond to antenna port set 3 of the second terminal device (i.e., CUE) (i.e., port 2 and port 3).

Another alternative predefined way is a cross-mapping rule. If the number of UEs in the aggregate UE group is N and the set of UE IDs is { X1, X2, … XN }, the number of transmit antenna ports supported by each UE is the same, and the number of antenna ports of the configured virtual UE is M, the rule for determining the UE IDs corresponding to antenna ports M (m=0, 1, … M-1) is: the result of calculating mod (m, N) obtains the index of the UE ID set, thereby determining the UE ID. For example, if the number of antenna ports supported by the SUE and the CUE is N1, the SRS resources of the configured 2×n1 antenna ports are mapped according to the rules of ports 0-SUE, ports 1-CUE, ports 2-SUE, ports 3-CUE, …, and ports 2×n1-CUE.

(2) Network equipment configuration mode

In this manner, the network device may instruct the first terminal device and the second terminal device of the mapping relationship between the aggregation UE and the ports in the SRS resource through a message such as RRC signaling.

As shown in table 7, the network device may carry UE number information (aggregationUE-Num) of an aggregated UE group in an aggregated UE Port Mapping (aggregationUE-Port-Mapping) field of an SRS Resource (SRS-Resource) IE in RRC signaling, where a field aggregated UE identity (aggregationUE-Id) and a field aggregated UE Port index (aggregationUE-PortIndex) respectively represent a UE Id set and an SRS Port set of the aggregated UE, and UE Id information in the two sets corresponds to SRS Port information one by one. It can be appreciated that the present application is not limited to the configuration of UE aggregation related parameters by using the SRS-Resource IE described above, and other IEs may be added to indicate, for example, other IEs may use names such as an aggregation UE Port mapping IE (aggregationUE-Port-MAPPING IE).

TABLE 7

Based on table 6, it can be seen that the first resource may correspond to the antenna port set 1 of the first terminal device and the antenna port set 3 of the second terminal device, and the second resource may correspond to the antenna port set 2 of the first terminal device and the antenna port set 4 of the second terminal device.

As shown in table 6, in SRS resource set 2, the third resource corresponds to antenna port set 2 of the first terminal device and antenna port set 4 of the second terminal device, and the fourth resource corresponds to antenna port set 1 of the first terminal device and antenna port set 3 of the second terminal device. Thus, when the first terminal device determines the third resource, the first terminal device may transmit information through the antenna port set 2 using the precoding information corresponding to the third resource.

Based on the example shown in table 6, the first terminal apparatus may receive second control information, which may include an index of the first cell and an index of the first resource in SRS resource set 1. The first cell may be a cell of TRP1, or the first cell belongs to TRP1. The first terminal device may determine that a TRP corresponding to the first cell is TRP1 according to a known correspondence between an index of the cell and the TRP, further determine that a transmission resource set corresponding to the TRP1 is SRS resource set 1, and determine the first resource from at least one SRS resource included in the SRS resource set 1 according to an index of the first resource in the SRS set 1. Further, the first terminal apparatus may determine that the first resource corresponds to the antenna port set 1 according to the correspondence relationship shown in table 6, and thus may determine to transmit the first information to the TRP1 through the antenna ports in the antenna port set 1. Or the first terminal device may determine that the first cell corresponds to the SRS resource set 1 according to the correspondence between the index of the cell and the transmission resource set, and determine the first resource from at least one SRS resource included in the SRS resource set 1 according to the index of the first resource in the SRS set 1. After determining the first resource from the at least one SRS resource included in the SRS resource set 1, further, the first terminal apparatus may determine that the first resource corresponds to the antenna port set 1 according to the correspondence shown in table 6, and thus may determine to transmit the first information to the TRP1 through the antenna ports in the antenna port set 1.

Optionally, the second control information may further include an index of the second cell and an index of the third resource. The first terminal device may determine that the third resource corresponds to the antenna port set 2 according to the correspondence shown in table 6, so the first terminal device may determine to transmit the second information to the TRP2 through the antenna ports in the antenna port set 2 using the precoding information corresponding to the third resource, in the same manner as the first terminal device determines to transmit the first information to the TRP1 through the antenna ports in the antenna port set 1 according to the index of the first cell in the second control information and the index of the first resource in the SRS resource set 1.

As a possible implementation manner of the present application, when the first terminal device is instructed to send through the antenna port set 1 according to the precoding information of the first resource in the SRS resource set 1, the network device may carry, in the DCI, the SRS resource ID of the first resource through the SRI, and carry, in the TCI state field, the SRS resource ID of the first resource and/or the serving cell identifier corresponding to the first resource. Wherein the serving cell identification field may carry an index of the cell. In addition, the DCI may further include a serving cell identification field in the TCI state, which may carry an index of a cell. That is, the above second control information may be understood to include an SRI field (for indicating an SRS resource ID) in the DCI and/or a TCI state field (for indicating an SRS resource ID and a cell index) in the DCI, or the second control information may be understood to include a and/or DCI carrying the SRI field and the TCI state field. In addition, the DCI may further include a TPMI field, which is configured to carry precoding matrix information corresponding to the first resource.

As an example, a TCI state (hereinafter, may be referred to as TCI state 7) for indicating an index of the first cell and an index of the first resource in SRS resource set 1, an SRI (hereinafter, may be referred to as SRI 7) for indicating an index of the first resource in SRS resource set 1, a TCI state (hereinafter, may be referred to as TCI state 8) for indicating an index of the second cell and an index of the third resource in SRS resource set 2, and an SRI (hereinafter, may be referred to as SRI 8) for indicating an index of the third resource in SRS resource set 2 are carried in the same DCI (hereinafter, may be referred to as second DCI). TPMI 7 and TPMI8 may also be included in the second DCI. Wherein, TCI state 7, SRI 7 and TPMI 7 are associated, TCI state 8, SRI 8 and TPMI8 are associated. It is to be appreciated that the TPMI 7 field may indicate precoding information corresponding to the first resource and/or the TPMI8 field may indicate precoding information corresponding to the third resource.

The first terminal device may determine the first resource according to TCI state 7 and SRI 7 after receiving the second DCI, and according to table 6, the first resource corresponds to antenna port set 1 of the first terminal device, so the first terminal device may send the first information to TRP1 through the antenna ports in antenna port set 1 through the precoding information corresponding to the first resource. If the second DCI further includes TCI state 8, SRI 8 and TPMI 8, the first terminal device may further determine a third resource according to the TCI state 8 and the SRI 8, where the third resource corresponds to the antenna port set 2 of the first terminal device, and the first terminal device may send the second information to TRP2 through the antenna ports in the antenna port set 2 through precoding matrix information corresponding to the third resource.

In addition, the second terminal apparatus may also receive the second DCI. As shown in table 6, after receiving the second DCI, the second terminal device may determine the first resource according to TCI state 7 and SRI 7, where the first resource corresponds to antenna port set 3 of the second terminal device as shown in table 6, so that the second terminal device may send uplink information to TRP1 through the antenna ports in antenna port set 3 using precoding matrix information corresponding to the first resource. If the second DCI further includes TCI state 8, SRI 8 and TPMI 8, the second terminal device may further determine a third resource according to the TCI state 8 and the SRI 8, where the third resource corresponds to the antenna port set 4 of the second terminal device, and the second terminal device may send uplink information to TRP2 through the antenna ports in the antenna port set 4 by using precoding matrix information corresponding to the third resource.

Similarly, if the network device indicates that the first terminal device sends uplink information according to the precoding information corresponding to the fourth resource in the SRS resource set 2 and through the antenna port set 1, and indicates that the second terminal device sends uplink information according to the precoding information corresponding to the fourth resource in the SRS resource set 2 and through the antenna port set 3, the network device may indicate, in the DCI, an index of a cell corresponding to the TRP2 and an index of the fourth resource in the SRS resource set 2 through the TCI state, an index of the fourth resource in the SRS resource set 2 through the SRI, and precoding information indicating that the fourth resource is lost through the TPMI. If the network device instructs the first terminal device to send uplink information according to the precoding information corresponding to the second resource in the SRS resource set 1 and through the antenna port set 2, and instructs the second terminal device to send uplink information according to the precoding information corresponding to the second resource in the SRS resource set 1 through the antenna port set 4, the network device may indicate, in the DCI, an index of a cell corresponding to the TRP1 and an index of the second resource in the SRS resource set 1 through the TCI state, an index of the second resource in the SRS resource set 1 through the SRI, and precoding information corresponding to the second resource through the TPMI.

Based on the scheme shown in table 6, the uplink transmission can be performed by using the same TCI state indication and aggregation UE and using one antenna port set. Furthermore, if each UE needs to transmit separately using two sets of antenna ports, the network device needs to instruct separately through two TCI states. The aggregate UE may use precoding information corresponding to different ports of the same SRS resource in uplink transmission.

Optionally, for the aggregated UE uplink indication scenario provided by the present application, the network device may scramble DCI (e.g., the foregoing first DCI and/or second DCI) through a group RNTI (G-RNTI), so that the first terminal device and/or the second terminal device descrambles the DCI according to the G-RNTI to obtain the TCI state, SRI and TPMI carried therein. Wherein the G-RNTI is configurable by the network device to an aggregated UE comprising the first terminal device and the second terminal device.

Further alternatively, for cqt transmission of the aggregate UE, the first terminal device and the second terminal device may transmit the same data using the same uplink resource. For example, if the network device transmits the second DCI including TCI state 7, SRI 7, and TPMI 7 to the first terminal device and the second terminal device, the first terminal device transmits the first information to TRP1 through antenna port 1 using the precoding information corresponding to the first resource, where the first information transmitted by the first terminal device may be carried on the first PUSCH. In addition, according to TCI state 7, SRI 7, and TPMI 7, the second terminal apparatus may transmit first information to TRP1 through antenna port 3 using precoding information corresponding to the first resource, and the first information transmitted by the second terminal apparatus may be carried on the second PUSCH. The time-frequency resource where the first PUSCH is located is the same as the time-frequency resource where the second PUSCH is located, for example, both are referred to as a ninth resource.

S102: and the first terminal device sends the first information through the first antenna port set according to the precoding information corresponding to the first resource.

The precoding information corresponding to the first resource may be indicated by a TPMI field corresponding to the first resource. For example, according to the description of table 4, when the TCI state 1 field and the SRI 1 field and the TPMI1 field are included in the first DCI, the first terminal device may determine the first resource according to the TCI state 1 and the SRI 1 fields, and then in S102, the first terminal device may transmit the first information using the precoding information indicated by the TPMI1 field.

In addition, the first antenna port set in S102 may be determined according to the first resource and the correspondence between the SRS resource and the antenna port set. Optionally, after determining the first resource in S101, the first terminal device may determine the first antenna port set according to the first resource and a correspondence between the SRS resource and the antenna port set. For example, as shown in table 4 or table 6, the manner in which the first terminal device determines the first antenna port set may be referred to the foregoing description of the usage of table 4 and/or table 6, and will not be further described herein.

Wherein the first information is receivable by the first transmission site as the first resource corresponds to the first transmission site.

Optionally, in addition to using the S-DCI method to indicate uplink transmissions of multiple terminal devices, in the communication method provided in the embodiment of the present application, the network device may also use multiple different DCIs to indicate uplink transmissions of the first terminal device and uplink transmissions of the second terminal device respectively.

In the flow shown in fig. 3B, a scheme in which a first terminal apparatus and a second terminal apparatus are respectively used as SUE and CUE and a plurality of DCIs respectively used to instruct uplink transmission of a UE will be described. The process may include the steps of:

s201: the network device (such as TRP1 and/or TRP 2) configures the corresponding relation (i.e. the first corresponding relation in the present application) between the SRS resource in the SRS resource set of different TRPs and the antenna port set of the UE for the SUE and the CUE respectively through RRC signaling.

Alternatively, the correspondence between the SRS resources respectively configured by the SUE and the CUE and the antenna port sets respectively configured by the SUE and the CUE may be shown in table 4 or table 6.

It can be appreciated that the correspondence between SRS resources in the SRS resource sets of different TRPs and the antenna port set of the UE may correspond to the first correspondence and/or the second correspondence described in the foregoing method embodiments.

S202: the network device (such as TRP1 or TRP 2) respectively sends DCI 0 and DCI 1 scrambled by cell radio network temporary identifier (cell-radio network temporary identifier, C-RNTI) to the SUE and the CUE to perform uplink scheduling.

In S202, the network device adopts two DCIs to schedule the SUE and the CUE respectively, and each DCI may indicate two TCI states, two SRIs and two TPMI. For example, DCI 0 is used to indicate uplink transmission of a SUE, DCI 1 is used to indicate uplink transmission of a CUE, and two SRIs and two TCI states in DCI 0 are used to indicate SRS resources and TRPs corresponding to uplink transmission respectively corresponding to two antenna port sets of the SUE. In addition, the two TPMI in DCI 0 are respectively used to indicate precoding information corresponding to SRS resources corresponding to two antenna port sets of the SUE. And the two SRIs and the two TCI states in DCI 1 are used for indicating SRS resources corresponding to the two antenna port sets of the CUE and TRPs corresponding to uplink transmission respectively, and the two TPMI in DCI 1 are used for indicating precoding information corresponding to the SRS resources corresponding to the two antenna port sets of the CUE respectively.

S203: the two antenna port sets of the SUE respectively adopt the precoding information corresponding to the SRS resources corresponding to the two antenna port sets of the CUE to send uplink information to different TRPs, and the two antenna port sets of the CUE respectively adopt the precoding information corresponding to the SRS resources corresponding to the two antenna port sets of the CUE to send uplink information to different TRPs.

It is understood that in the flow shown in fig. 3B, if the SUE is considered to correspond to the first terminal device and the CUE corresponds to the second terminal device, DCI 0 may correspond to the first control information or the first downlink control information described in the foregoing method embodiment part.

Alternatively, in the example shown in fig. 3B, the SRS resources corresponding to the two antenna port sets of the SUE respectively belong to TRP1 and TRP2, so in step S203, the SUE may respectively send uplink data to TRP1 and TRP2 through the two antenna port sets. In addition, since the SRS resources corresponding to the two antenna port sets of the CUE respectively belong to TRP1 and TRP2, in step S203, the CUE may respectively transmit uplink data to TRP1 and TRP2 through the two antenna port sets.

In another possible implementation manner, the network device may further send uplink scheduling information of the SUE and the CUE to the SUE, and the SUE sends the uplink scheduling indication corresponding to the CUE through a link between the SUE and the CUE, so that the CUE may not be required to be within a coverage range of the network device, or may not be required to establish a connection with the network device, and signaling overhead between the network device and the CUE may be reduced. Wherein the link between the SUE and the CUE may comprise a sidelink or bluetooth, etc.

It can be understood that if the indication manner of the S-DCI is adopted, the scheduling procedure may be performed with reference to fig. 3B, and it is only necessary to carry the content carried by DCI 0 and DCI 1 in S202 in the same DCI, such as DCI scrambled by the group RNTI, and receive the DCI scrambled by the group RNTI by the SUE and the CUE.

Taking the side-link as an example, as shown in fig. 4, the scheduling scheme may include the following steps:

s301: the network device (such as TRP1 and/or TRP 2) configures corresponding relations between SRS resources in SRS resource sets of different TRPs and antenna port sets of the UE for the SUE and the CUE respectively through RRC signaling.

S301 may refer to the description of S201, and the description is not repeated.

S302: the network device (e.g., TRP1 or TRP 2) sends the C-RNTI scrambled DCI to the SUE, wherein the DCI may include 4 TCI states, which may be denoted TCI STATE A, TCI state B, TCI STATE C, and TCI STATE C, respectively.

Wherein, the DCI can also comprise 4 SRIs and 4 TPMI. Alternatively, SRIs a and TCI STATE A may be used to indicate SRS resource 0 corresponding to antenna port set 0 of the SUE and TRP corresponding to uplink transmission, SRIs B and TCI state B may be used to indicate SRS resource 1 corresponding to antenna port set 1 of the SUE and TRP corresponding to uplink transmission, SRIs C and TCI STATE C may be used to indicate SRS resource 2 corresponding to antenna port set 0 of the CUE and TRP corresponding to uplink transmission, and SRIs D and TCI STATE D may be used to indicate SRS resource 3 corresponding to antenna port set 1 of the CUE and TRP corresponding to uplink transmission.

In addition, TPMI a and TPMI B may be used to indicate precoding information corresponding to SRS resource 0 and SRS resource 1, respectively. TPMI C and TPMI D may be used to indicate precoding information corresponding to SRS resource 2 and SRS resource 3, respectively.

S303: the SUE sends TCI STATE C, SRI C, TPMI C, TCI STATE D, SRID, and TPMI D to the CUE via the side links.

S304: the two antenna port sets of the SUE respectively adopt the precoding information corresponding to the SRS resources corresponding to the two antenna port sets of the CUE to send uplink information to different TRPs, and the two antenna port sets of the CUE respectively adopt the precoding information corresponding to the SRS resources corresponding to the two antenna port sets of the CUE to send uplink information to different TRPs.

It is understood that in the flow shown in fig. 4, if the SUE is considered to correspond to the first terminal apparatus and the CUE corresponds to the second terminal apparatus, the DCI in S302 may correspond to the first control information or the first downlink control information described in the foregoing method embodiment section. Further, if the CUE is considered to correspond to the first terminal device, the information or signaling for carrying TCI STATE C and SRI, and/or TCI STATE D and SRI D transmitted through the side downlink in S303 may correspond to the first control information or the first downlink control information described in the foregoing method embodiment section.

In another possible implementation, the uplink transmission scheduling of multiple UEs may also be implemented using a multi-DCI (multi-DCI) scheme. The multi-DCI scheme refers to transmitting a plurality of DCIs by a plurality of TRPs, wherein the DCI transmitted by each TRP is used to indicate that an aggregate UE (i.e., SUE and CUE) faces an uplink transmission of the TRP transmitting the DCI. The multi-DCI scheme can be suitable for the scene of non-ideal back transmission among TRPs, namely, the transmission of control information and/or data information cannot be realized among different TRPs or the transmission delay does not meet the requirement, and the signaling overhead in the uplink scheduling process is reduced by a mode of aggregate scheduling of a plurality of UE.

As shown in fig. 5, the method may include the steps of:

S401: the network device (such as TRP1 and/or TRP 2) configures corresponding relations between SRS resources in SRS resource sets of different TRPs and antenna port sets of the UE for the SUE and the CUE respectively through RRC signaling.

S401 may refer to the description of S201, and the description is not repeated.

S402: TRP1 and TRP2 send G-RNTI scrambled DCI to the SUE and CUE, respectively.

That is, in S402, TRP1 and TRP2 transmit one DCI, respectively, and both DCI transmitted by TRP1 and TRP2, respectively, may be used to schedule uplink transmission of SUE and CUE.

The RRC signaling sent by the network device in S401 may include a PDCCH-Config IE, which may configure two control resource sets (control resource set, CORESET) Chi Suoyin (CORESET poolIndex), that is, indicate that TRP1 and TRP2 send DCI to the aggregate UE group for uplink scheduling, respectively. For example, CORESETpoolIndex =0 represents Group-DCI 0 transmitted by TRP 1; CORESETpoolIndex =1 denotes Group-DCI 1 transmitted by TRP 2. Wherein, DCI0 is used to indicate the antenna port set and precoding information used by the SUE and the CUE to transmit PUSCH to TRP1, and DCI1 is used to indicate the antenna port set and precoding information used by the SUE and the CUE to transmit PUSCH to TRP 2. The manner in which DCI0 and DCI1 indicate the antenna port set may refer to the manner in which the SRS resource is indicated by TCI state and/or SRI and the corresponding antenna port set is determined according to the SRS resource in the present application, and DCI0 and DCI1 may indicate precoding information corresponding to the SRS resource by TPMI field, so that the indication of the antenna port set and the precoding information may be implemented.

S403: the two antenna port sets of the SUE respectively adopt the precoding information corresponding to the SRS resources corresponding to the two antenna port sets of the CUE to send uplink information to different TRPs, and the two antenna port sets of the CUE respectively adopt the precoding information corresponding to the SRS resources corresponding to the two antenna port sets of the CUE to send uplink information to different TRPs.

It is understood that in the flowchart shown in fig. 4, the DCI in S402 may correspond to the first control information or the first downlink control information described in the foregoing method embodiment section.

Based on the same conception, the embodiment of the application also provides a communication device. The communication device may include corresponding hardware structures and/or software modules that perform the functions shown in the above methods. Those of skill in the art will readily appreciate that the various illustrative elements and method steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is implemented as hardware or computer software driven hardware depends upon the particular application scenario and design constraints imposed on the solution.

Fig. 6 to 8 are schematic structural diagrams of possible communication devices according to an embodiment of the present application. The communication device can be used for realizing the functions of the network equipment and/or the terminal device in the method embodiment, so that the beneficial effects of the method embodiment can be realized. In one possible implementation, the communication means may be a terminal device or a network device as shown in fig. 1. Details and effects relating to the foregoing embodiments may be found in the description of the foregoing embodiments.

As shown in fig. 6, the communication apparatus 600 includes a processing unit 610 and a communication unit 620. The communication unit 620 may implement corresponding communication functions, and the processing unit 610 is configured to perform data processing. The communication unit 620 may also be a transceiver unit or an input/output interface. The communication device 600 may be configured to implement the functionality of the first terminal device and/or the network equipment in the method embodiment shown in fig. 2 and described above.

For example, the processing unit 610 may be configured to determine the first resource when implementing the functionality of the first terminal device. The communication unit 620 may be configured to send the first information through the first antenna port set according to the precoding information corresponding to the first resource.

Optionally, the processing unit 610 may be further configured to determine a fifth resource. The communication unit 620 may be configured to send second information through the second antenna port set according to the precoding information corresponding to the fifth resource.

Optionally, the communication unit 620 may be further configured to receive the first control information.

Optionally, the processing unit 610 may be further configured to determine a third resource. The communication unit 620 may be configured to send the second information through the second antenna port set according to the precoding information corresponding to the third resource.

Optionally, the communication unit 620 may be further configured to receive second control information.

Optionally, the communication unit 620 may be specifically configured to send the first information through the ninth resource.

Optionally, the communication unit 620 may be further configured to receive the first correspondence.

As another example, the communication unit 620 may be configured to transmit at least one of the first control information, the second control information, or the first downlink control information when implementing the function of the network device.

Optionally, the communication unit 620 may be further configured to receive the second information according to the precoding information corresponding to the fifth resource.

Optionally, the communication unit 620 may be further configured to receive the second information through precoding information corresponding to the third resource.

Optionally, the communication unit 620 may be further configured to receive the first information through precoding information corresponding to the first resource.

Optionally, the communication unit 620 may be further configured to send the first correspondence.

The meanings of the above technologies may be referred to the description of the method embodiment section, and will not be repeated.

It should be understood that the division of the modules in the embodiments of the present application is merely illustrative, and there may be another division manner in actual implementation, and in addition, each functional module in the embodiments of the present application may be integrated in one processor, or may exist separately and physically, or two or more modules may be integrated in one module. The integrated modules may be implemented in hardware or in software functional modules.

Fig. 7 shows a communication apparatus 700 according to an embodiment of the present application, for implementing the communication method according to the present application. The communication device 700 may be a communication device to which the communication method is applied, may be a component in a communication device, or may be a device that can be used in cooperation with a communication device. The communication device 700 may be a network apparatus and/or a terminal device. The communication device 700 may be a system-on-chip or a chip. In the embodiment of the application, the chip system can be formed by a chip, and can also comprise the chip and other discrete devices. The communication device 700 comprises at least one processor 720 for implementing the communication method provided by the embodiment of the application. The communication device 700 may also include an input-output interface 710, which may include an input interface and/or an output interface. In embodiments of the present application, input-output interface 710 may be used to communicate with other devices via a transmission medium, the functions of which may include transmitting and/or receiving. For example, when the communication apparatus 700 is a chip, it is transmitted to other chips or devices through the input/output interface 710. Processor 720 may be used to implement the methods shown in the method embodiments described above.

Illustratively, the processor 720 may be configured to perform actions performed by the processing unit 610, and the input-output interface 710 may be configured to perform actions performed by the communication unit 620, which are not described in detail.

Optionally, the communication device 700 may further comprise at least one memory 730 for storing program instructions and/or data. Memory 730 is coupled to processor 720. The coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units, or modules, which may be in electrical, mechanical, or other forms for information interaction between the devices, units, or modules. Processor 720 may operate in conjunction with memory 730. Processor 720 may execute program instructions stored in memory 730. At least one of the at least one memory may be integrated with the processor.

In an embodiment of the present application, the memory 730 may be a nonvolatile memory, such as a hard disk (HARD DISK DRIVE, HDD) or a Solid State Disk (SSD), or may be a volatile memory (RAM). The memory is any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited to such. The memory in embodiments of the present application may also be circuitry or any other device capable of performing memory functions for storing program instructions and/or data.

In an embodiment of the present application, processor 720 may be a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, where the methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. The general purpose processor may be a microprocessor or any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present application may be embodied directly in a hardware processor for execution, or in a combination of hardware and software modules in the processor for execution.

Fig. 8 shows a communication apparatus 800 according to an embodiment of the present application, for implementing the communication method according to the present application. The communication device 800 may be a communication device to which the communication method according to the embodiment of the present application is applied, or may be a component in a communication device, or may be a device that can be used in a matching manner with a communication device. The communication device 800 may be a network apparatus and/or a terminal device. The communication device 800 may be a system-on-chip or a chip. In the embodiment of the application, the chip system can be formed by a chip, and can also comprise the chip and other discrete devices. Some or all of the communication methods provided in the above embodiments may be implemented by hardware or software, and when implemented by hardware, the communication apparatus 800 may include: an input interface circuit 801, a logic circuit 802, and an output interface circuit 803.

Optionally, taking the function of the device for implementing the receiving end as an example, the input interface circuit 801 may be used to perform the above-mentioned receiving action performed by the communication unit 620, the output interface circuit 803 may be used to perform the above-mentioned sending action performed by the communication unit 620, and the logic circuit 802 may be used to perform the above-mentioned action performed by the processing unit 610, which is not repeated.

Alternatively, the communication device 800 may be a chip or an integrated circuit when embodied.

Some or all of the operations and functions performed by the communication device described in the above method embodiments of the present application may be implemented by a chip or an integrated circuit.

An embodiment of the present application provides a computer-readable storage medium storing a computer program including instructions for performing the above-described method embodiments.

Embodiments of the present application provide a computer program product comprising instructions which, when run on a computer, cause the computer to perform the above-described method embodiments.

The embodiment of the application provides a communication system which comprises at least one terminal device and network equipment. The at least one terminal device may perform the actions of the first terminal device and/or the second terminal device in the present application. The network device may be used to perform the actions of the network device in the method shown in fig. 2.

It is to be appreciated that the processor in embodiments of the application may be a central processing unit (central processing unit, CPU), but may also be other general purpose processors, digital signal processors (DIGITAL SIGNAL processors, DSPs), application Specific Integrated Circuits (ASICs), field programmable gate arrays (field programmable GATE ARRAY, FPGAs), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. The general purpose processor may be a microprocessor, but in the alternative, it may be any conventional processor.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, the processes or functions in accordance with embodiments of the present application are produced in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). Computer readable storage media can be any available media that can be accessed by a computer or data storage devices, such as servers, data centers, etc., that contain an integration of one or more available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., high-density digital video disc (digital video disc, DVD)), or a semiconductor medium (e.g., SSD), etc.

It is noted that a portion of this patent document contains material which is subject to copyright protection. The copyright owner has reserved copyright rights, except for making copies of patent documents or recorded patent document content of the patent office.

The network device in the above-described respective apparatus embodiments corresponds to the terminal device and the network device or the terminal device in the method embodiments, the respective steps are performed by respective modules or units, for example, the communication unit (transceiver) performs the steps of receiving or transmitting in the method embodiments, and other steps than transmitting and receiving may be performed by the processing unit (processor). Reference may be made to corresponding method embodiments for the function of a specific unit. Wherein the processor may be one or more.

As used in this specification, the terms "component," "module," "system," and the like are intended to refer to a computer-related entity, either hardware, firmware, a combination of hardware and software, or software in execution. For example, a component may be, but is not limited to being, a process running on a processor, an object, an executable, a thread of execution, a program, and/or a computer. By way of illustration, both an application running on a computing device and the computing device can be a component. One or more components may reside within a process and/or thread of execution and a component may be localized on one computer and/or distributed between two or more computers. Furthermore, these components can execute from various computer readable media having various data structures stored thereon. The components may communicate by way of local and/or remote processes such as in accordance with a signal having one or more data packets (e.g., data from two components interacting with one another in a local system, distributed system, and/or across a network such as the internet with other systems by way of the signal).

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

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

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

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

In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium.

The foregoing is merely illustrative embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about variations or substitutions within the technical scope of the present application, and the application should be covered. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method of communication, comprising:

A first terminal device determining a first resource, the first resource corresponding to a first set of antenna ports of the first terminal device, the first resource included in a first set of transmission resources, the first set of transmission resources corresponding to a first transmission site;

The first terminal device sends first information through the first antenna port set according to the precoding information corresponding to the first resource;

wherein the first set of transmission resources further comprises a second resource;

The second resource corresponds to a second set of antenna ports of the first terminal device, the first resource also corresponds to a third set of antenna ports of the second terminal device, or

The second resource corresponds to a third set of antenna ports of a second terminal device.

2. The method of claim 1, wherein the second set of resources corresponds to a third set of antenna ports of a second terminal device, the first set of transmission resources further comprising third resources corresponding to a second set of antenna ports of the first terminal device, the first set of transmission resources further comprising fourth resources corresponding to a fourth set of antenna ports of the second terminal device.

3. The method of claim 1, wherein the second resource corresponds to a third set of antenna ports of a second terminal device, the method further comprising:

The first terminal device determines a fifth resource, the fifth resource corresponding to a second antenna port set of the first terminal device, the fifth resource belonging to a second transmission resource set, the second transmission resource set corresponding to a second transmission site, the second transmission resource set further including a sixth resource, the sixth resource corresponding to a fourth antenna port set of the second terminal device;

and the first terminal device sends second information through the second antenna port set according to the precoding information corresponding to the fifth resource.

4. The method of claim 3, wherein the second set of transmission resources further comprises a seventh resource, the seventh resource corresponding to the first set of antenna ports, the second set of transmission resources further comprising an eighth resource, the eighth resource corresponding to the third set of antenna ports.

5. The method of claim 3 or 4, wherein the method further comprises:

The first terminal device receives first control information, wherein the first control information comprises at least one of the following information:

An index of a first cell and an index of the first resource in the first set of transmission resources, the first cell belonging to the first transmission site;

And the index of a second cell and the index of the fifth resource in the second transmission resource set, wherein the second cell belongs to the second transmission site.

6. The method of claim 5, wherein first control information is included in first downlink control information, the first downlink control information further comprising at least one of:

an index of a third cell and an index of the second resource in the first set of transmission resources, the third cell belonging to the first transmission site;

an index of a fourth cell and an index of the fourth resource in the first set of transmission resources, the fourth cell belonging to the first transmission site;

An index of a fifth cell and an index of the sixth resource in the second set of transmission resources, the fifth cell belonging to the second transmission site;

an index of a sixth cell and an index of the eighth resource in the second set of transmission resources, the sixth cell belonging to the second transmission site.

7. The method of claim 1, wherein the second resource corresponds to a second set of antenna ports of the first terminal device, the first resource further corresponds to a third set of antenna ports of a second terminal device, and the second resource further corresponds to a fourth set of antenna ports of the second terminal device.

8. The method of claim 7, wherein the method further comprises:

The first terminal device determining a third resource, the third resource corresponding to a second set of antenna ports of the first terminal device, the third resource included in a second set of transmission resources, the second set of transmission resources corresponding to a second transmission site, the third resource further corresponding to the fourth set of antenna ports, the second set of transmission resources further including a fourth resource, the fourth resource corresponding to the first set of antenna ports and the third set of antenna ports;

And the first terminal device sends second information through the second antenna port set according to the precoding information corresponding to the third resource.

9. The method of claim 8, wherein the method further comprises:

the first terminal device receives second control information including at least one of:

An index of a second cell and an index of the third resource in the first set of transmission resources, the second cell belonging to the second transmission site.

10. The method according to any one of claims 7-9, wherein the first terminal device sends first information through the first antenna port set according to the precoding information corresponding to the first resource, including:

the first terminal device sends the first information through a ninth resource, and the ninth resource is further used for the second terminal device to send the first information through the third antenna port set.

11. The method of any one of claims 1-10, wherein the method further comprises:

The first terminal device receives a first correspondence, wherein the first correspondence comprises a correspondence between the first resource and the first antenna port set.

12. A method of communication, comprising:

The network equipment sends first control information, wherein the first control information comprises an index of a first cell and an index of a first resource in a first transmission resource set, the first cell belongs to a first transmission site, the first resource corresponds to a first antenna port set of a first terminal device, and the first transmission resource set corresponds to the first transmission site;

13. The method of claim 12, wherein the second set of resources corresponds to a third set of antenna ports of a second terminal device, the first set of transmission resources further comprising third resources corresponding to a second set of antenna ports of the first terminal device, the first set of transmission resources further comprising fourth resources corresponding to a fourth set of antenna ports of the second terminal device.

14. The method of claim 12, wherein the second resource corresponds to a third set of antenna ports of a second terminal device, the first control information further comprises an index of a second cell and an index of a fifth resource in the second set of transmission resources, the second cell belonging to the second transmission site, the fifth resource corresponding to the second set of antenna ports of the first terminal device, the fifth resource belonging to the second set of transmission resources, the second set of transmission resources corresponding to the second transmission site, the second set of transmission resources further comprising a sixth resource, the sixth resource corresponding to a fourth set of antenna ports of the second terminal device.

15. The method of claim 14, wherein the network device comprises the second transmission site, the method further comprising:

And the network equipment receives second information according to the precoding information corresponding to the fifth resource, wherein the second information is sent by the first terminal device through the second antenna port set.

16. The method of claim 14 or 15, wherein the second set of transmission resources further comprises a seventh resource, the seventh resource corresponding to the first set of antenna ports, the second set of transmission resources further comprising an eighth resource, the eighth resource corresponding to the third set of antenna ports.

17. The method according to any of claims 12-16, wherein the first control information is included in first downlink control information, the first downlink control information further comprising at least one of:

18. The method of claim 12, wherein the second resource corresponds to a second set of antenna ports of the first terminal device, the first resource further corresponds to a third set of antenna ports of a second terminal device, and the second resource further corresponds to a fourth set of antenna ports of the second terminal device.

19. The method of claim 18, wherein the first control information further comprises an index of a second cell and an index of a third resource in the first set of transmission resources, the second cell belonging to the second transmission site, the third resource corresponding to a second set of antenna ports of the first terminal device, the third resource included in a second set of transmission resources, the second set of transmission resources corresponding to a second transmission site, the third resource further corresponding to the fourth set of antenna ports, the second set of transmission resources further comprising a fourth resource, the fourth resource corresponding to the first set of antenna ports and the third set of antenna ports.

20. The method of claim 19, wherein the network device comprises the second transmission site, the method further comprising:

and the network equipment receives second information through the precoding information corresponding to the third resource, and the second information is sent by the first terminal device through the second antenna port set.

21. The method of any of claims 12-20, wherein the network device comprises the first transmission site, the method further comprising:

The network equipment receives first information through the precoding information corresponding to the first resource, and the first information is sent by the first terminal device through the first antenna port set.

22. The method of claim 21, wherein the first information is carried on a ninth resource that is further used by the second terminal device to send the first information through the third set of antenna ports.

23. The method of any one of claims 12-22, wherein the method further comprises:

The network device sends a first correspondence, where the first correspondence includes a correspondence between the first resource and the first antenna port set.

24. A communication device comprising a processor for executing computer program instructions stored in a memory to implement the method of any one of claims 1-11 or to implement the method of any one of claims 12-23.

25. A computer readable storage medium comprising computer program instructions which, when executed by a computer, cause the receiver to implement the method of any one of claims 1-11 or cause the receiver to implement the method of any one of claims 12-23.