WO2025086274A1 - Communication method and apparatus - Google Patents

Abstract

The present application relates to the field of communications, and discloses a communication method and apparatus. The method comprises: a terminal receives first information indicating sending of an uplink signal on the basis of a downlink reference signal and second information indicating a resource configuration parameter during uplink transmission, wherein the first information and the second information come from a network device; and the terminal sends the uplink signal to the network device on the basis of the second information and uplink precoding, wherein the uplink precoding is determined on the basis of the downlink reference signal, and the uplink signal comprises an uplink data signal and/or an uplink demodulation reference signal. The overhead of uplink information transmission is reduced.

Description

Communication method and device Technical Field

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

Background Art

In the new radio/new air interface (NR) system of the 3rd generation partnership project (3GPP), there are two transmission modes for uplink information: codebook-based (CB) and noncodebook-based (NCB). Among them, the CB mode can be used in frequency division duplex (FDD) scenarios or time division duplex (TDD) scenarios, and NCB is mainly used in TDD scenarios.

In the new generation of mobile communication systems, with the significant increase in the number of terminals and the number of spatial division multiplexing streams RANK, the uplink information transmission overhead in the current sending mode is huge.

Summary of the invention

The present application provides a communication method and device, which reduce uplink information transmission overhead.

In order to achieve the above objectives, this application adopts the following technical solutions:

In a first aspect, a communication method is provided, which is applied to a terminal. The execution subject of the method can be a terminal, or a component or device (such as a processor, a chip, or a chip system, etc.) applied to the terminal, or a logic module or software that can realize all or part of the terminal functions. The method includes: receiving first information indicating that an uplink signal is sent according to a downlink reference signal and second information indicating resource configuration parameters during uplink transmission. An uplink signal is sent according to the second information and an uplink precoding, wherein the uplink precoding is determined according to the downlink reference signal, and the uplink signal includes an uplink data signal and/or an uplink demodulation reference signal.

In the first aspect, the network device instructs the terminal to send an uplink signal according to the downlink reference signal, as well as the resource configuration parameters during uplink transmission, so that the terminal can send an uplink signal. There is no need to transmit SRS between the terminal and the network device, thus realizing a "simplified uplink transmission mode" and greatly reducing the uplink transmission overhead.

In one possible implementation, the method also includes: receiving third information, the third information indicating a resource configuration parameter of a target downlink reference signal; receiving the target downlink reference signal according to the third information; sending an uplink signal according to the second information and the uplink precoding, including: sending an uplink signal according to the second information and the target uplink precoding, wherein the target uplink precoding is determined based on the target downlink reference signal.

In this implementation, the resource configuration parameters of the target downlink reference signal used to send the uplink signal are configured to the terminal by the network device, so that the uplink signal can be successfully sent in the "simplified uplink transmission mode".

In one possible implementation, the second information includes: time-frequency resource parameters of uplink transmission, the first parameter, and downlink reference signal trigger indication information, the first parameter includes at least one of a modulation and coding scheme and a number of spatial division multiplexing streams; receiving the third information includes: after receiving the downlink reference signal trigger indication information, receiving the third information.

In this implementation, the second information configures the parameters required for uplink transmission, and also configures the downlink reference signal trigger indication information for triggering the reception of the third information, which can ensure the transmission of the uplink signal in the "simplified uplink transmission mode".

In a possible implementation, the second information includes: a time-frequency resource parameter of uplink transmission and a first parameter, where the first parameter includes at least one of a modulation and coding scheme and a number of space-division multiplexing streams.

In this implementation, the second information configures some parameters required for uplink transmission, which can ensure uplink signal transmission in the "simplified uplink transmission mode".

In a possible implementation, the modulation and coding scheme includes one or more modulation and coding schemes, and the number of spatial division multiplexing streams includes one or more number of spatial division multiplexing streams.

In this implementation, one or more modulation and coding schemes (number of spatial division multiplexing streams) are set to enable the terminal to send uplink signals.

In a possible implementation, the time-frequency resource parameters of the target downlink reference signal are determined according to preset downlink resource parameters and/or resource configuration parameters during uplink transmission.

In this implementation, three determination rules for the time-frequency resource parameters of the target downlink reference signal are designed, which can be used by the terminal to send uplink signals. Number.

In a possible implementation, the second information is carried in a radio resource control message, or the second information is carried in a media access control message, or the second information is carried in a downlink control information message.

In this implementation, several possible message types carrying the second information are provided.

In one possible implementation, the method also includes: receiving fourth information, the fourth information indicating the antenna port corresponding to the transmission of the uplink signal; sending the uplink signal according to the second information and the uplink precoding, including: sending the uplink signal on the antenna port corresponding to the uplink signal according to the second information and the uplink precoding.

In this implementation, the network device configures the antenna port for sending uplink signals to the terminal through the fourth information, which can ensure the uplink signal transmission in the "simplified uplink transmission mode".

In a second aspect, a communication method is provided, which is applied to a network device. The execution subject of the method can be a network device, or a component or device (such as a processor, a chip, or a chip system, etc.) applied to the network device, or a logic module or software that can realize all or part of the functions of the network device. The method includes: sending first information and second information, the first information indicates that an uplink signal is sent according to a downlink reference signal, and the second information indicates a resource configuration parameter during uplink transmission; receiving an uplink signal, wherein the uplink precoding of the uplink signal is determined according to the downlink reference signal, and the uplink signal includes an uplink data signal and/or an uplink demodulation reference signal.

In the second aspect, the network device instructs the terminal to send an uplink signal according to the downlink reference signal, as well as the resource configuration parameters during uplink transmission, so that the terminal can send an uplink signal. There is no need to transmit SRS between the terminal and the network device, thus realizing a "simplified uplink transmission mode" and greatly reducing the uplink transmission overhead.

In a possible implementation, the method further includes: sending third information indicating a resource configuration parameter of a target downlink reference signal; and sending a target downlink reference signal, wherein the target downlink reference signal is used to determine uplink precoding of the uplink signal.

In this implementation, the resource configuration parameters of the target downlink reference signal used to send the uplink signal are configured to the terminal by the network device, so that the uplink signal can be successfully sent in the "simplified uplink transmission mode".

In a possible implementation, the second information includes: time-frequency resource parameters of uplink transmission, first parameters, and downlink reference signal trigger indication information, and the first parameter includes at least one of a modulation and coding scheme and a number of spatial division multiplexing streams.

In this implementation, the second information configures the parameters required for uplink transmission, and also configures the downlink reference signal trigger indication information for triggering the reception of the third information, which can ensure the transmission of the uplink signal in the "simplified uplink transmission mode".

In a possible implementation, the second information includes: a time-frequency resource parameter of uplink transmission and a first parameter, where the first parameter includes at least one of a modulation and coding scheme and a number of space-division multiplexing streams.

In this implementation, the second information configures some parameters required for uplink transmission, which can ensure uplink signal transmission in the "simplified uplink transmission mode".

In a possible implementation, the modulation and coding scheme includes one or more modulation and coding schemes, and the number of spatial division multiplexing streams includes one or more number of spatial division multiplexing streams.

In this implementation, one or more modulation and coding schemes (number of spatial division multiplexing streams) are set to enable the terminal to send uplink signals.

In a possible implementation, the time-frequency resource parameters of the target downlink reference signal are determined according to preset downlink resource parameters and/or resource configuration parameters during uplink transmission.

In this implementation, three determination rules for the time-frequency resource parameters of the target downlink reference signal are designed, which can be used by the terminal to send uplink signals.

In a possible implementation, the second information is carried in a radio resource control message, or the second information is carried in a media access control message, or the second information is carried in a downlink control information message.

In this implementation, several possible message types carrying the second information are provided.

In a possible implementation, the method further includes: sending fourth information, where the fourth information indicates an antenna port corresponding to the transmission of the uplink signal.

In this implementation, the network device configures the antenna port for sending uplink signals to the terminal through the fourth information, which can ensure the uplink signal transmission in the "simplified uplink transmission mode".

In a third aspect, a communication method is provided, which is applied to a terminal. The execution subject of the method may be a terminal, or a component or device (such as a processor, a chip, or a chip system, etc.) applied to the terminal, or a logic module or software that can realize all or part of the terminal functions. The method comprises: receiving fifth information, the fifth information indicating a generation mode of uplink precoding; when the fifth information indicates that an uplink signal is sent according to a downlink reference signal, receiving second information, the second information indicating a resource configuration parameter during uplink transmission; sending an uplink signal according to the second information and the uplink precoding, wherein the uplink precoding is based on the downlink reference signal It is determined that the uplink signal includes an uplink data signal and/or an uplink demodulation reference signal.

In the third aspect, the network device instructs the terminal on the generation mode of uplink precoding, and when instructing to send an uplink signal according to a downlink reference signal, sends the resource configuration parameters for uplink transmission to the terminal, so that the terminal can send an uplink signal. Uplink transmission can be achieved between the terminal and the network device without transmitting SRS, thereby realizing a "simplified uplink transmission mode" and greatly reducing the uplink transmission overhead.

In a fourth aspect, a communication method is provided, which is applied to a network device. The execution subject of the method can be a network device, or a component or device (such as a processor, a chip, or a chip system, etc.) applied to the network device, or a logic module or software that can realize all or part of the functions of the network device. The method includes: sending fifth information, the fifth information indicating the generation mode of uplink precoding; when the fifth information indicates that an uplink signal is sent according to a downlink reference signal, sending second information, the second information indicating the resource configuration parameters during uplink transmission; receiving an uplink signal, wherein the uplink precoding of the uplink signal is determined according to the downlink reference signal, and the uplink signal includes an uplink data signal and/or an uplink demodulation reference signal.

In the fourth aspect, the network device instructs the terminal on the generation mode of uplink precoding, and when instructing to send an uplink signal according to a downlink reference signal, sends the resource configuration parameters for uplink transmission to the terminal for the terminal to send an uplink signal. Uplink transmission can be achieved between the terminal and the network device without transmitting SRS, thereby realizing a "simplified uplink transmission mode" and greatly reducing the uplink transmission overhead.

In a fifth aspect, a communication device is provided, which may be a terminal or a chip or system on chip in the terminal. The communication device may implement the functions performed by the terminal in the first aspect or the possible design of the first aspect, and the functions may be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions. For example, the communication device includes: a transceiver module for receiving first information and second information, the first information indicating that an uplink signal is sent according to a downlink reference signal, and the second information indicating resource configuration parameters during uplink transmission; the transceiver module is also used to send an uplink signal according to the second information and an uplink precoding, wherein the uplink precoding is determined according to the downlink reference signal, and the uplink signal includes an uplink data signal and/or an uplink demodulation reference signal.

In one possible implementation, the transceiver module is also used to receive third information, where the third information indicates a resource configuration parameter of a target downlink reference signal; the transceiver module is also used to receive a target downlink reference signal according to the third information; the transceiver module is specifically used to send an uplink signal according to the second information and a target uplink precoding, wherein the target uplink precoding is determined based on the target downlink reference signal.

In one possible implementation, the second information includes: time-frequency resource parameters of uplink transmission, a first parameter, and downlink reference signal trigger indication information, the first parameter including at least one of a modulation and coding scheme and a number of spatial division multiplexing streams; a transceiver module is specifically used to receive the third information after receiving the downlink reference signal trigger indication information.

In a possible implementation, the second information includes: a time-frequency resource parameter of uplink transmission and a first parameter, where the first parameter includes at least one of a modulation and coding scheme and a number of space-division multiplexing streams.

In a possible implementation, the modulation and coding scheme includes one or more modulation and coding schemes, and the number of spatial division multiplexing streams includes one or more number of spatial division multiplexing streams.

In a possible implementation, the time-frequency resource parameters of the target downlink reference signal are determined according to preset downlink resource parameters and/or resource configuration parameters during uplink transmission.

In a possible implementation, the second information is carried in a radio resource control message, or the second information is carried in a media access control message, or the second information is carried in a downlink control information message.

In a possible implementation, the transceiver module is further used to receive fourth information, where the fourth information indicates an antenna port corresponding to the transmission of the uplink signal;

The transceiver module is specifically used to send an uplink signal on the antenna port corresponding to the uplink signal according to the second information and uplink precoding.

In another example, the communication device provided in the fifth aspect can implement the functions performed by the terminal in the above-mentioned third aspect or a possible design of the third aspect. For example, the communication device includes: a transceiver module, used to receive fifth information, the fifth information indicating a generation mode of uplink precoding; the transceiver module is also used to receive second information when the fifth information indicates that an uplink signal is to be sent according to a downlink reference signal, the second information indicating a resource configuration parameter during uplink transmission; the transceiver module is also used to send an uplink signal according to the second information and the uplink precoding, wherein the uplink precoding is determined according to the downlink reference signal, and the uplink signal includes an uplink data signal and/or an uplink demodulation reference signal.

In a sixth aspect, a communication device is provided, which may be a network device or a chip or system on chip in the network device. The communication device may implement the functions performed by the network device in the second aspect or the possible design of the second aspect, and the functions may be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions. For example, the communication device includes: a transceiver module for sending a first message and a second message, the first message Indicates that an uplink signal is sent according to a downlink reference signal, and the second information indicates resource configuration parameters during uplink transmission; the transceiver module is also used to receive an uplink signal, wherein the uplink precoding of the uplink signal is determined according to the downlink reference signal, and the uplink signal includes an uplink data signal and/or an uplink demodulation reference signal.

In one possible implementation, the transceiver module is further used to send third information, where the third information indicates resource configuration parameters of a target downlink reference signal; the transceiver module is further used to send a target downlink reference signal, where the target downlink reference signal is used to determine uplink precoding of an uplink signal.

In a possible implementation, the second information includes: time-frequency resource parameters of uplink transmission, first parameters, and downlink reference signal trigger indication information, and the first parameter includes at least one of a modulation and coding scheme and a number of spatial division multiplexing streams.

In a possible implementation, the second information includes: a time-frequency resource parameter of uplink transmission and a first parameter, where the first parameter includes at least one of a modulation and coding scheme and a number of space-division multiplexing streams.

In a possible implementation, the modulation and coding scheme includes one or more modulation and coding schemes, and the number of spatial division multiplexing streams includes one or more number of spatial division multiplexing streams.

In a possible implementation, the time-frequency resource parameters of the target downlink reference signal are determined according to preset downlink resource parameters and/or resource configuration parameters during uplink transmission.

In a possible implementation, the second information is carried in a radio resource control message, or the second information is carried in a media access control message, or the second information is carried in a downlink control information message.

In a possible implementation, the transceiver module is further used to send fourth information, where the fourth information indicates the antenna port corresponding to the transmission of the uplink signal.

In another example, the communication device provided in the sixth aspect can implement the functions performed by the terminal in the above-mentioned fourth aspect or the possible design of the fourth aspect. For example, the communication device includes: a transceiver module, used to send fifth information, the fifth information indicating a generation mode of uplink precoding; the transceiver module is also used to send second information when the fifth information indicates that an uplink signal is to be sent according to a downlink reference signal, the second information indicating a resource configuration parameter during uplink transmission; the transceiver module is also used to receive an uplink signal, wherein the uplink precoding of the uplink signal is determined according to the downlink reference signal, and the uplink signal includes an uplink data signal and/or an uplink demodulation reference signal.

In a seventh aspect, the present application provides a communication device, the communication device includes a processor, the processor is used to execute the methods of the first aspect to the fourth aspect. Further, the communication device may also include a memory, the memory stores computer instructions, and the processor can run the computer instructions to execute the methods of the first aspect to the fourth aspect. Further, the communication device may also include a transceiver, the transceiver is used to execute the methods of the first aspect to the fourth aspect.

In an eighth aspect, the present application provides a computer-readable storage medium, which stores computer instructions. When the computer instructions are executed, the methods of the first to fourth aspects are executed.

In a ninth aspect, the present application provides a computer program product comprising instructions, which, when executed on a computer, enables the computer to execute the methods of the first to fourth aspects described above.

In a tenth aspect, the present application provides a chip, comprising a processor and a communication interface, wherein the processor and the communication interface are used to support the chip in executing the methods of the first to fourth aspects.

In an eleventh aspect, the present application provides a communication system, the communication system comprising a terminal and a network device, wherein the terminal is used to execute the method of the first aspect or the third aspect, and the access network device is used to execute the method of the second aspect or the fourth aspect.

Among them, the beneficial effects described in the fifth to eleventh aspects of the present application can refer to the analysis of the beneficial effects of the first to fourth aspects, and will not be repeated here.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the structure of a communication system provided in an embodiment of the present application;

FIG2 is a flow chart of a communication method provided in an embodiment of the present application;

FIG3 is a flow chart of another communication method provided in an embodiment of the present application;

FIG4 is a flow chart of another communication method provided in an embodiment of the present application;

FIG5 is a schematic diagram of a flow chart of another communication method provided in an embodiment of the present application;

FIG6 is a schematic diagram of the structure of a communication device provided in an embodiment of the present application.

DETAILED DESCRIPTION

The network architecture and service scenarios described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application. It does not constitute a limitation on the technical solutions provided in the embodiments of the present application. A person skilled in the art may appreciate that, with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

It should be noted that the terms "first" and "second" in the specification, claims and drawings of the present application are used to distinguish different objects rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units that are inherent to these processes, methods, products or devices.

It should be understood that in the embodiments of the present application, "at least one (item)" refers to one or more, "multiple" refers to two or more, "at least two (items)" refers to two or three and more than three, and "and/or" is used to describe the association relationship of the associated objects, indicating that there can be three relationships. For example, "A and/or B" can represent: only A exists, only B exists, and A and B exist at the same time, where A and B can be singular or plural. The character "/" generally indicates that the associated objects before and after are in an "or" relationship. "At least one of the following (items)" or similar expressions refers to any combination of these items, including any combination of single items (items) or plural items (items). For example, at least one of a, b or c can represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, c can be single or multiple. It should be understood that in the embodiments of the present application, "B corresponding to A" means that B is associated with A. For example, B can be determined based on A. It should also be understood that determining B based on A does not mean determining B based only on A, but B can also be determined based on A and/or other information. In addition, the "connection" in the embodiments of the present application refers to various connection modes such as direct connection or indirect connection to achieve communication between devices, and the embodiments of the present application do not impose any limitation on this.

Unless otherwise specified, the "transmission" (transmit/transmission) appearing in the embodiments of the present application refers to bidirectional transmission, including sending and/or receiving actions. Specifically, the "transmission" in the embodiments of the present application includes the sending of data, the receiving of data, or the sending of data and the receiving of data. In other words, the data transmission here includes uplink and/or downlink data transmission. Data may include channels and/or signals, uplink data transmission is uplink channel and/or uplink signal transmission, and downlink data transmission is downlink channel and/or downlink signal transmission. The "network" and "system" appearing in the embodiments of the present application express the same concept, and the communication system is the communication network.

Before introducing the embodiments of the present application, some terms involved in the embodiments of the present application are explained.

CB-based uplink (UL) transmission method:

The base station will configure the terminal with one or two SRS resources (SRS Resource) of multiple ports belonging to the same sounding reference signal resource set (SRS Resource Set). Assume that the number of SRS ports is P; the terminal sends one or two SRS signals of P ports through the SRS resources. Different SRS resources can have different beam directions. The base station measures the uplink channel state information (CSI) based on the SRS signal. When there is uplink data to be sent, the base station schedules the uplink resources and indicates the following information:

1) The index of the SRS resource to be used (SRS resource indicator, SRI), indicating the uplink beam information.

2) In the beam corresponding to the SRS resource, the number of layers L used in the uplink and the transmission precoding matrix indicator (TPMI) and other information are included, and multiple demodulation reference signal (DMRS) ports are configured, where the number of DMRS ports is equal to L.

The terminal receives the above configuration information, inserts the DMRS signals of the L ports into the L data streams, and then performs precoding according to the instruction of the TPMI to obtain the signals of the P ports; the terminal then sends the signals of the P ports in the same manner as the previous P port SRS signal.

UL transmission method based on NCB:

The base station configures P single-port SRS resources belonging to the same SRS resource set for the terminal. The beam directions of these P single-port SRSs can be different; the base station sends a downlink channel state information-reference signal (CSI-RS) to the terminal.

Based on the downlink CSI-RS, the terminal measures the downlink channel state information relative to P single ports. Then, based on the channel reciprocity, it infers the uplink channel state information and calculates the corresponding SRS signal transmission mode (digital precoding and analog precoding mode). Then, based on the calculated SRS signal transmission mode, the uplink SRS signal is sent through the SRS resources of P single ports.

The base station receives P SRS signals, selects L SRS signals with less interference and noise, and sends the indexes (SRI) of these L SRS signals to the terminal through downlink control information (DCI). The base station also configures multi-port DMRS for the terminal, where the number of DMRS ports is L.

The terminal receives the DCI, and according to the instruction of the DCI, inserts the DMRS signal of the L port into the L data streams, and then sends them in the same sending manner as the L SRS signals sent previously.

In the new generation of mobile communication systems, with the significant increase in the number of terminals and ranks, if the uplink transmission of the terminal is still sent in CB mode or NCB mode, it will lead to complicated transmission process, further increasing the resource scheduling overhead of the base station; and increase the transmission delay of uplink data; it will also increase the overhead of uplink data transmission.

In order to solve the above technical problems, an embodiment of the present application provides a communication method. The method provided by the embodiment of the present application is described below in conjunction with the drawings in the specification.

The communication method provided in the embodiments of the present application can be applied to various communication systems, such as: the sixth generation (6th generation mobile networks, 6G) communication system, long term evolution (long term evolution, LTE) system, fifth generation (5th generation, 5G) mobile communication system, wireless fidelity (wireless fidelity, WiFi) system, future communication system, or a system integrating multiple communication systems, etc., which is not limited by the embodiments of the present application. Among them, 5G can also be called new radio (new radio, NR). As long as there are two entities in the communication system, and one of the entities can send information to the other entity, or receive information sent by the other entity, the communication method provided in the embodiments of the present application can be implemented. The information here can be physical signals such as preambles, reference signals, etc.; physical layer control information such as downlink control information (DCI) and uplink control information (UCI); control plane (CP) data such as radio resource control (RRC) messages; user plane (UP) data; other information related to specific scenarios or applications, such as relevant data enabled or generated by artificial intelligence (AI) and machine learning (ML) (such as gradient information, training data, model parameters, etc.), enabling sensing functions or relevant data generated by sensing, etc.

The communication method provided in the embodiments of the present application can be applied to various communication scenarios, for example, it can be applied to one or more of the following communication scenarios: enhanced mobile broadband (eMBB), ultra-reliable low latency communication (URLLC), machine type communication (MTC), massive machine type communication (mMTC), device to device (D2D), vehicle to everything (V2X), vehicle to vehicle (V2V), and internet of things (IoT), etc.

The embodiments of the present application can be used for transmission based on dynamic authorization, and can also be used for authorization-free transmission such as 2-step/4-step random access (RA) or preconfigured uplink resource (PUR)/configured grant (CG). The embodiments of the present application can be used in high-frequency scenarios, such as millimeter wave and THz scenarios, and can also be used in low-frequency scenarios, such as 700/900MHz, 2.1/2.6/3.5GHz frequency bands, etc. The embodiments of the present application can be used in licensed frequency bands, and can also be used in unlicensed frequency bands. The embodiments of the present application can be used for the air interface Uu link between the terminal and the network device, and can also be used for the sidelink Sidelink such as D2D, and can also be used for the non-terrestrial network (NTN) communication link.

The embodiments of the present application can be applied to a terminal in a connected state or an activated state (ACTIVE), a terminal in a non-connected state (INACTIVE) or an idle state (IDLE), and a terminal that is not in the above three states, such as a terminal that is not attached to the network or is not synchronized with the network downlink.

The communication method provided in the embodiment of the present application is described below using the communication system shown in FIG. 1 as an example.

FIG. 1 is a schematic diagram of a communication system provided in an embodiment of the present application. As shown in FIG. 1 , the communication system may include:

Multiple network devices and multiple terminals. A network device can cover one or more cells, such as: network device 1 covers cell 1, network device 2 covers cell 2, and network device 3 covers cell 3 (in this example, the network device covers one cell as an example. In the specific implementation, the network device can also cover multiple cells without limitation). Network device 1, network device 2, and network device 3 can be the same device or different devices. The terminal receives the service of the network device in one of the cells 1, cell 2, and cell 3 and is in a connected state. The terminal sends data to the network device via the uplink.

It should be noted that FIG1 is only an exemplary framework diagram, and the number of nodes, the number of cells, and the state of the terminal included in FIG1 are not limited. In addition to the functional nodes shown in FIG1, other nodes may also be included, such as: core network equipment, gateway equipment, application servers, etc., without limitation. The network equipment communicates with the core network equipment through wired or wireless means, such as through the next generation (NG) interface.

Among them, the network device is mainly used to implement at least one function of resource scheduling, wireless resource management, and wireless resource control of the terminal. Specifically, the network device may include any node in a base station, a wireless access point, a transmission receive point (TRP), a transmission point (TP), and some other access nodes. In the embodiment of the present application, the device for implementing the function of the network device may be a network device; it may also be a device that can support the network device to implement the function, such as a chip system, which can be installed in the network device or used in combination with the network device.

Terminal (terminal equipment) can be user equipment (UE), mobile station (MS) or mobile terminal (MT), etc. Specifically, the terminal can be a mobile phone, tablet computer or computer with wireless transceiver function, or virtual reality (VR) terminal, augmented reality (AR) terminal, etc.

(augmented reality, AR) terminal, wireless terminal in industrial control, wireless terminal in unmanned driving, wireless terminal in telemedicine, wireless terminal in smart grid, wireless terminal in smart city, smart home, or vehicle terminal, etc. In the embodiment of the present application, the device for realizing the function of the terminal device can be a terminal, or a device that can support the terminal to realize the function, such as a chip system, which can be installed in the terminal or used in combination with the terminal.

FIG2 shows a flow chart of a communication method provided in an embodiment of the present application. As shown in FIG2 , the method may include the following steps:

S210: The network device sends first information and second information to the terminal. Correspondingly, the terminal receives the first information and the second information.

The first information indicates that an uplink signal is sent according to a downlink reference signal. In other words, compared with the current mode of transmitting uplink signals through SRS resources based on the CB/NCB method, the first information indicates that the terminal starts a "simplified uplink transmission mode (simplified UL Mode)" without transmitting SRS. In this mode, the uplink precoding of the uplink signal is generated based on the downlink reference signal. The first information can be carried by multiple types of messages. For example, the first information can be carried in a radio resource control (RRC) message, or the first information can also be carried in a media access control (MAC) message.

The second information indicates resource configuration parameters during uplink transmission. The second information may be carried by multiple messages, and illustratively, the second information may be carried in RRC, or the second information may also be carried in MAC, or the second information may also be carried in DCI.

S220, the terminal sends an uplink signal to the network device according to the second information and the uplink precoding. Correspondingly, the network device receives the uplink signal.

Among them, after receiving the first information, the terminal starts the "simplified uplink transmission mode" and sends an uplink signal to the network device according to the second information and the uplink precoding. The uplink precoding UL Precoder is determined according to the downlink reference signal. The downlink reference signal can be a downlink reference signal received by the terminal from the network device at a past time close to the current time, or it can be pre-agreed between the terminal and the network device, or it can be pre-configured through a protocol, or it can be instantly configured by the network device to the terminal. The implementation method of the instant configuration will be described in S310-S330. The uplink signal is an uplink data signal, for example, a downlink physical shared channel (physical uplink shared channel, PUSCH) signal. Alternatively, the uplink signal is an uplink demodulation reference signal (demodulation reference signal, DMRS).

The antenna ports UL Antenna Ports corresponding to the uplink signal sent by the terminal can be pre-agreed between the terminal and the network device, or pre-configured through a protocol, or can be immediately indicated to the terminal by the network device. In the "simplified UL Mode", the antenna ports for transmitting uplink signals are associated with the downlink reference signal instead of the uplink reference signal (SRS).

The implementation method of the immediacy indication will be described in S410.

In an embodiment of the present application, the network device instructs the terminal to send an uplink signal according to the downlink reference signal, as well as the resource configuration parameters during uplink transmission, so that the terminal can send the uplink signal. There is no need to transmit SRS between the terminal and the network device, thereby realizing a "simplified uplink transmission mode" and greatly reducing the uplink transmission overhead.

In comparison, in the existing CB mode, the UL transmission process is: UL transmission SRS->downlink DL transmission DCI->UL transmission PUSCH. In the existing NCB mode, the UL transmission process is DL transmission CSI-RS->UL transmission SRS->DL transmission DCI->UL transmission PUSCH. In the uplink simplified mode of this embodiment, the UL transmission process is DL transmission DCI or CSI-RS->UL transmission PUSCH. It is not difficult to see that in the uplink simplified mode of this embodiment, the uplink transmission overhead is greatly reduced.

In one embodiment, as shown in FIG3 , the method may further include:

S310: The network device sends third information to the terminal. Correspondingly, the terminal receives the third information.

Among them, the third information indicates the resource configuration parameters of the target downlink reference signal, and the time-frequency resource parameters of the target downlink reference signal can be determined according to the preset downlink resource parameters and/or the resource configuration parameters during uplink transmission. The terminal can receive the target downlink reference signal based on the third information. The time when the terminal receives the third information can be pre-agreed between the terminal and the network device, or pre-configured through a protocol, or can be an immediate indication from the network device to the terminal. The third information can be sent periodically, semi-periodically, or non-periodically, without limitation.

S320: The network device sends a target downlink reference signal to the terminal. Correspondingly, the terminal receives the target downlink reference signal according to the third information.

Wherein, after receiving the target downlink reference signal, the terminal can send an uplink signal based on it. Exemplarily, the target downlink reference signal can be a channel state information reference signal (Channel State Information-Reference Signal, CSI-RS). Accordingly, in this embodiment, S220 may include:

S330, the terminal sends an uplink signal to the network device according to the second information and the target uplink precoding. Correspondingly, the network device receives the uplink signal.

The target uplink precoding is determined according to the target downlink reference signal.

In the embodiment of the present application, the resource configuration parameters of the target downlink reference signal used to send the uplink signal are configured to the terminal by the network device, so as to ensure the successful transmission of the uplink signal in the "simplified uplink transmission mode".

In an embodiment, the second information may include: time-frequency resource parameters of uplink transmission, the first parameter, and downlink reference signal trigger indication information.

The first parameter includes at least one of a modulation and coding scheme and a number of spatial division multiplexing streams. The modulation and coding scheme includes one or more modulation and coding schemes, and the number of spatial division multiplexing streams includes one or more numbers of spatial division multiplexing streams. In S310, it is introduced that the transmission time of the third information can be an immediate indication of the network device to the terminal, and the information applied by the indication is the downlink reference signal trigger indication information in the second information. When the terminal receives the downlink reference signal trigger indication information, it triggers the reception of the third information.

When the modulation and coding scheme (or the number of spatial division multiplexing streams) includes multiple items, the network device can configure multiple optional MCS sets and/or Rank set parameters for the terminal in a semi-static or dynamic manner. The network device can also bundle different MCS and/or Rank selections with different uplink signal parameters (such as DMRS) and send them to the terminal. The terminal can select a modulation and coding scheme (or the number of spatial division multiplexing streams) for sending an uplink signal from multiple modulation and coding schemes (or the number of spatial division multiplexing streams).

After receiving the uplink signal sent by the terminal, the network device can determine the MCS or Rank selected by the terminal by blind detection. Specifically, the network device can try different MCS options in the optional MCS set until the decoding is correct; similarly, the network device can try different Rank options in the optional Rank set until the decoding is correct.

In an embodiment of the present application, the second information configures the parameters required for uplink transmission, and also configures the downlink reference signal trigger indication information that triggers the reception of the third information, which can ensure the transmission of the uplink signal under the "simplified uplink transmission mode".

In one embodiment, the second information includes: time-frequency resource parameters of uplink transmission and a first parameter, where the first parameter includes at least one of a modulation and coding scheme and a number of space-division multiplexing streams.

Among them, in S310, it is introduced that the transmission time of the third information can be pre-agreed between the terminal and the network device, or pre-configured through a protocol. In these two scenarios, the terminal can determine when to receive the third information without the need for an indication from the network device. No downlink reference signal trigger indication information is configured in the second information.

In the embodiment of the present application, the second information configures some parameters required for uplink transmission, which can ensure the uplink signal transmission under the "simplified uplink transmission mode".

In one embodiment, as shown in FIG4 , the method may further include:

S410: The network device sends fourth information to the terminal. Correspondingly, the terminal receives the fourth information.

The fourth information indicates the UL Antenna Ports corresponding to the transmission of the uplink signal. The terminal may send the uplink signal based on the UL Antenna Ports indicated by the fourth information. That is, in this embodiment, S220 may include:

S420, the terminal sends an uplink signal to the network device on the UL Antenna Ports indicated by the fourth information according to the second information and the uplink precoding. Correspondingly, the network device receives the uplink signal.

In the embodiment of the present application, the network device configures the UL Antenna Ports for sending uplink signals to the terminal through the fourth information, thereby ensuring the sending of uplink signals under the "simplified uplink transmission mode".

In an embodiment of the present application, the network device instructs the terminal to send an uplink signal according to the downlink reference signal, as well as the resource configuration parameters during uplink transmission, so that the terminal can send the uplink signal. Uplink transmission can be achieved between the terminal and the network device without transmitting SRS, thereby realizing a "simplified uplink transmission mode" and greatly reducing the uplink transmission overhead.

FIG5 shows a flow chart of another communication method provided in an embodiment of the present application. As shown in FIG5 , the method may include the following steps:

S510, the network device sends fifth information to the terminal, and correspondingly, the terminal receives the fifth information.

The fifth information indicates the generation mode of the uplink precoder. In this embodiment, the network device can configure the generation mode of the uplink precoder according to information such as the communication environment. The configured generation mode of the uplink precoder can be to generate the uplink precoder by transmitting the SRS. The specific implementation of generating the uplink precoder by transmitting the SRS can refer to the prior art and will not be described in detail. The generation mode under the "simplified uplink transmission mode" in the example, that is, the fifth information indicates that the uplink signal is sent according to the downlink reference signal.

S520: When the fifth information indicates that an uplink signal is to be sent according to the downlink reference signal, the network device sends second information to the terminal, and correspondingly, the terminal receives the second information.

The second information indicates resource configuration parameters during uplink transmission. For a specific description of the second information, reference may be made to the description of S210 and will not be repeated here.

S530: The terminal sends an uplink signal to the network device according to the second information and the uplink precoding. Correspondingly, the network device receives the uplink signal.

The uplink precoding is determined according to a downlink reference signal, and the uplink signal includes an uplink data signal and/or an uplink demodulation reference signal. The specific description of this step can refer to the description of S220, which will not be repeated here.

It should be understood that when the "simplified uplink transmission mode" is implemented in this embodiment, steps S310-S330 and/or S410 may also be performed to achieve corresponding beneficial effects, which will not be described in detail.

In an embodiment of the present application, the network device instructs the terminal on the generation mode of uplink precoding, and when instructing to send an uplink signal according to a downlink reference signal, sends the resource configuration parameters for uplink transmission to the terminal, so that the terminal can send the uplink signal. Uplink transmission can be achieved between the terminal and the network device without transmitting SRS, thereby realizing a "simplified uplink transmission mode" and greatly reducing the uplink transmission overhead.

The above mainly introduces the scheme provided by the embodiment of the present application from the perspective of the execution logic of each step. It is understandable that each node, such as a terminal, includes a hardware structure and/or software module corresponding to each function in order to realize the above functions. Those skilled in the art should easily realize that, in combination with the algorithm steps of each example described in the embodiment disclosed herein, the method of the embodiment of the present application can be implemented in the form of hardware, software, or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of this application.

The embodiment of the present application can divide the functional modules of the terminal according to the above method example. For example, each functional module can be divided according to each function, or two or more functions can be integrated into one processing module. The above integrated module can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of modules in the embodiment of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation.

In a specific implementation, each network element shown in the present application, such as a terminal, may adopt the composition structure shown in FIG6 or include the components shown in FIG6. FIG6 is a schematic diagram of the structure of a communication device provided in an embodiment of the present application. When the communication device has the function of the terminal described in the embodiment of the present application, the communication device may be a chip or system on chip in a terminal or network device. When the communication device has the function of the terminal described in the embodiment of the present application, the communication device may be a chip or system on chip in a terminal or network device.

As shown in FIG6 , the communication device may include a processor 601, a communication line 602, a transceiver 603, and a memory 604. The processor 601, the memory 604, and the transceiver 603 may be connected via the communication line 602. In an example, the processor 601 may include one or more CPUs, such as CPU0 and CPU1 in FIG6 .

As an optional implementation manner, the communication device includes multiple processors. For example, in addition to the processor 601 in FIG. 6 , it may also include a processor 607 .

The processor 601 may be a central processing unit (CPU), a general-purpose processor, a network processor (NP), a digital signal processor (DSP), a microprocessor, a microcontroller, a programmable logic device (PLD), or any combination thereof. The processor 601 may also be other devices with processing functions, such as circuits, devices, or software modules.

The communication line 602 is used to transmit information between the components included in the communication device.

The transceiver 603 is used to communicate with other devices or other communication networks. The other communication networks may be Ethernet, radio access network (RAN), wireless local area network (WLAN), etc. The transceiver 603 may be an interface circuit, a pin, a radio frequency module, a transceiver or any device capable of achieving communication.

Furthermore, the communication device may also include a memory 604. The memory 604 is used to store instructions, wherein the instructions may be computer programs.

The memory 604 may be a read-only memory (ROM) or other types of static storage devices that can store static information and/or instructions, or a random access memory (RAM) or other types of dynamic storage devices that can store information and/or instructions, or an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage, magnetic disk storage medium or other magnetic storage device, and the optical disc storage package including compact disc, laser disc, optical disc, digital versatile disc, or blu-ray disc.

It should be noted that the memory 604 can exist independently of the processor 601, or can be integrated with the processor 601. The memory 604 can be used to store instructions or program codes or some data, etc. The memory 604 can be located in the communication device or outside the communication device, without limitation. When the processor 601 executes the instructions stored in the memory 604, the method provided in the embodiment of the present application can be implemented.

As an optional implementation, the communication device further includes an output device 605 and an input device 606. Exemplarily, the input device 606 is a device such as a keyboard, a mouse, a microphone or a joystick, and the output device 605 is a device such as a display screen and a speaker.

It should be noted that the communication device may be a desktop computer, a portable computer, a network server, a mobile phone, a tablet computer, a wireless terminal, an embedded device, a chip system, or a device having a similar structure as shown in FIG6. In addition, the composition structure shown in FIG6 does not constitute a limitation on the communication device. In addition to the components shown in FIG6, the communication device may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently.

In the embodiment of the present application, the chip system may be composed of a chip, or may include a chip and other discrete devices.

The embodiment of the present application also provides a communication device, which is applied to a terminal. Each module in the communication device has the function of implementing the corresponding steps of the communication method provided in the embodiment of the present application, and can achieve its corresponding technical effect. The corresponding beneficial effects of the execution steps of each module can refer to the description of the corresponding steps, and will not be repeated. The function can be implemented by hardware, or by hardware executing the corresponding software. The hardware or software includes one or more modules corresponding to the above functions. The communication device can be a terminal device or a chip or system on chip in the terminal device.

The embodiment of the present application also provides a communication device, which is applied to a network device. Each module in the communication device has the function of implementing the corresponding steps of the communication method provided in the embodiment of the present application, and can achieve its corresponding technical effect. The corresponding beneficial effects of the execution steps of each module can refer to the description of the corresponding steps, and will not be repeated. The function can be implemented by hardware, or by hardware executing the corresponding software implementation. The hardware or software includes one or more modules corresponding to the above functions. The communication device can be a network device or a chip or system on chip in the network device.

An embodiment of the present application also provides a communication system, which includes a terminal and a network device, and is used to implement the communication method provided in the embodiment of the present application and achieve its corresponding technical effects.

The embodiment of the present application also provides a computer-readable storage medium. All or part of the processes in the above method embodiments can be completed by a computer program to instruct the relevant hardware, and the program can be stored in the above computer-readable storage medium. When the program is executed, it can include the processes of the above method embodiments. The computer-readable storage medium can be a terminal device of any of the above embodiments, such as: an internal storage unit including a data sending end and/or a data receiving end, such as a hard disk or memory of the terminal device. The above computer-readable storage medium can also be an external storage device of the above terminal device, such as a plug-in hard disk equipped on the above terminal device, a smart memory card (smart media card, SMC), a secure digital (secure digital, SD) card, a flash card (flash card), etc. Further, the above computer-readable storage medium can also include both the internal storage unit of the above terminal device and an external storage device. The above computer-readable storage medium is used to store the above computer program and other programs and data required by the above terminal device. The above computer-readable storage medium can also be used to temporarily store data that has been output or is to be output.

The present application also provides a computer instruction. All or part of the process in the above method embodiment can be completed by computer instructions to instruct related hardware (such as computers, processors, network devices, and terminals, etc.). The program can be stored in the above computer-readable storage medium.

The embodiment of the present application also provides a chip system. The chip system can be composed of a chip, or can include a chip and other discrete devices, without limitation. The chip system includes a processor and a transceiver, and all or part of the processes in the above method embodiment can be completed by the chip system, such as the chip system can be used to implement the functions performed by the terminal in the above method embodiment, or to implement the functions performed by the network device in the above method embodiment.

In one possible design, the above-mentioned chip system also includes a memory, which is used to store program instructions and/or data. When the chip system is running, the processor executes the program instructions stored in the memory so that the chip system performs the functions performed by the terminal in the above-mentioned method embodiment or performs the functions performed by the network device in the above-mentioned method embodiment.

In the embodiments of the present application, the processor 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, and may implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of the present application. The general-purpose processor may be a microprocessor or any conventional processor, etc. The steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed by a hardware processor, or may be executed by a combination of hardware and software modules in the processor.

In the embodiments of the present application, the memory may be a non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), etc., or a volatile memory (volatile memory), such as a random-access memory (RAM). The memory is any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto. The memory in the embodiments of the present application may also be a circuit or any other device that can realize a storage function, for storing instructions and/or data.

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

The units described as separate components may or may not be physically separated, and the components shown as units may be one physical unit or multiple physical units, that is, they may be located in one place or distributed in multiple different places. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

In addition, each functional unit in each embodiment of the present application can be integrated into a processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of a software functional unit. If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a readable storage medium. Based on such an understanding, the technical solution of the embodiment of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium, including several instructions to enable a device, such as: a single-chip microcomputer, a chip, etc., or a processor (processor) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as USB flash drives, mobile hard disks, ROM, RAM, disks, or optical disks.

The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims (39)

A communication method, characterized by comprising: receiving first information and second information, wherein the first information indicates that an uplink signal is sent according to a downlink reference signal, and the second information indicates a resource configuration parameter during uplink transmission; An uplink signal is sent according to the second information and an uplink precoding, wherein the uplink precoding is determined according to a downlink reference signal, and the uplink signal includes an uplink data signal and/or an uplink demodulation reference signal. The communication method according to claim 1, characterized in that the method further comprises: receiving third information, where the third information indicates a resource configuration parameter of a target downlink reference signal; receiving the target downlink reference signal according to the third information; The sending an uplink signal according to the second information and uplink precoding includes: The uplink signal is sent according to the second information and a target uplink precoding, wherein the target uplink precoding is determined according to the target downlink reference signal. The communication method according to claim 2, characterized in that the second information includes: time-frequency resource parameters of uplink transmission, the first parameter, and downlink reference signal trigger indication information, the first parameter includes at least one of a modulation and coding scheme and a number of spatial division multiplexing streams; the receiving of the third information includes: After receiving the downlink reference signal triggering indication information, the third information is received. The communication method according to claim 2 is characterized in that the second information includes: time-frequency resource parameters of uplink transmission and a first parameter, and the first parameter includes at least one of a modulation and coding scheme and a number of spatial division multiplexing streams. The communication method according to claim 3 or 4 is characterized in that the modulation and coding scheme includes one or more modulation and coding schemes, and the number of spatial division multiplexing streams includes one or more number of spatial division multiplexing streams. The communication method according to any one of claims 2 to 5 is characterized in that the time-frequency resource parameters of the target downlink reference signal are determined according to preset downlink resource parameters and/or resource configuration parameters during the uplink transmission. The communication method according to any one of claims 1-6 is characterized in that the second information is carried in a wireless resource control message, or the second information is carried in a media access control message, or the second information is carried in a downlink control information message. The communication method according to any one of claims 1 to 7, characterized in that the method further comprises: receiving fourth information, where the fourth information indicates an antenna port corresponding to transmitting the uplink signal; The sending an uplink signal according to the second information and uplink precoding includes: An uplink signal is sent on the antenna port corresponding to the uplink signal according to the second information and uplink precoding. A communication method, characterized by comprising: Sending first information and second information, wherein the first information indicates that an uplink signal is sent according to a downlink reference signal, and the second information indicates a resource configuration parameter during uplink transmission; The uplink signal is received, wherein uplink precoding of the uplink signal is determined according to a downlink reference signal, and the uplink signal includes an uplink data signal and/or an uplink demodulation reference signal. The communication method according to claim 9, characterized in that the method further comprises: Sending third information, where the third information indicates a resource configuration parameter of a target downlink reference signal; The target downlink reference signal is sent, where the target downlink reference signal is used to determine uplink precoding of the uplink signal. The communication method according to claim 10 is characterized in that the second information includes: time-frequency resource parameters of uplink transmission, first parameters, and downlink reference signal trigger indication information, and the first parameter includes at least one of a modulation and coding scheme and a number of spatial division multiplexing streams. The communication method according to claim 10 is characterized in that the second information includes: time-frequency resource parameters of uplink transmission and a first parameter, and the first parameter includes at least one of a modulation and coding scheme and a number of spatial division multiplexing streams. The communication method according to claim 11 or 12 is characterized in that the modulation and coding scheme includes one or more modulation and coding schemes, and the number of spatial division multiplexing streams includes one or more number of spatial division multiplexing streams. The communication method according to any one of claims 10-13 is characterized in that the time-frequency resource parameters of the target downlink reference signal are determined according to preset downlink resource parameters and/or resource configuration parameters during the uplink transmission. The communication method according to any one of claims 9 to 14, characterized in that the second information is carried on a wireless resource The second information is carried in a control message, or the second information is carried in a media access control message, or the second information is carried in a downlink control information message. The communication method according to any one of claims 9 to 15, characterized in that the method further comprises: Send fourth information, where the fourth information indicates an antenna port corresponding to transmitting the uplink signal. A communication method, characterized by comprising: receiving fifth information, where the fifth information indicates a generation mode of uplink precoding; In a case where the fifth information indicates that an uplink signal is sent according to a downlink reference signal, receiving second information, wherein the second information indicates a resource configuration parameter during uplink transmission; An uplink signal is sent according to the second information and an uplink precoding, wherein the uplink precoding is determined according to a downlink reference signal, and the uplink signal includes an uplink data signal and/or an uplink demodulation reference signal. A communication method, characterized by comprising: Sending fifth information, where the fifth information indicates a generation mode of uplink precoding; When the fifth information indicates that an uplink signal is sent according to a downlink reference signal, second information is sent, wherein the second information indicates a resource configuration parameter during uplink transmission; An uplink signal is received, wherein uplink precoding of the uplink signal is determined according to a downlink reference signal, and the uplink signal includes an uplink data signal and/or an uplink demodulation reference signal. A communication device, comprising: A transceiver module, configured to receive first information and second information, wherein the first information indicates that an uplink signal is sent according to a downlink reference signal, and the second information indicates a resource configuration parameter during uplink transmission; The transceiver module is further used to send an uplink signal according to the second information and uplink precoding, wherein the uplink precoding is determined according to a downlink reference signal, and the uplink signal includes an uplink data signal and/or an uplink demodulation reference signal. The communication device according to claim 19, characterized in that the transceiver module is further used to receive third information, wherein the third information indicates a resource configuration parameter of a target downlink reference signal; The transceiver module is further configured to receive the target downlink reference signal according to the third information; The transceiver module is specifically configured to send the uplink signal according to the second information and a target uplink precoding, wherein the target uplink precoding is determined according to the target downlink reference signal. The communication device according to claim 20 is characterized in that the second information includes: time-frequency resource parameters of uplink transmission, a first parameter, and downlink reference signal trigger indication information, the first parameter includes at least one of a modulation and coding scheme and a number of spatial division multiplexing streams; the transceiver module is specifically used to receive the third information after receiving the downlink reference signal trigger indication information. The communication device according to claim 20 is characterized in that the second information includes: time-frequency resource parameters of uplink transmission and a first parameter, and the first parameter includes at least one of a modulation and coding scheme and a number of spatial division multiplexing streams. The communication device according to claim 21 or 22 is characterized in that the modulation and coding scheme includes one or more modulation and coding schemes, and the number of spatial division multiplexing streams includes one or more number of spatial division multiplexing streams. The communication device according to any one of claims 20-23 is characterized in that the time-frequency resource parameters of the target downlink reference signal are determined according to preset downlink resource parameters and/or resource configuration parameters during the uplink transmission. The communication device according to any one of claims 19-24 is characterized in that the second information is carried in a wireless resource control message, or the second information is carried in a media access control message, or the second information is carried in a downlink control information message. The communication device according to any one of claims 19 to 25, characterized in that the transceiver module is further used to receive fourth information, wherein the fourth information indicates an antenna port corresponding to the transmission of the uplink signal; The transceiver module is specifically configured to send an uplink signal on an antenna port corresponding to the uplink signal according to the second information and uplink precoding. A communication device, comprising: A transceiver module, configured to send first information and second information, wherein the first information indicates that an uplink signal is sent according to a downlink reference signal, and the second information indicates a resource configuration parameter during uplink transmission; The transceiver module is further configured to receive the uplink signal, wherein the uplink precoding of the uplink signal is based on a downlink reference The signal determines that the uplink signal includes an uplink data signal and/or an uplink demodulation reference signal. The communication device according to claim 27, characterized in that the transceiver module is further used to send third information, wherein the third information indicates a resource configuration parameter of a target downlink reference signal; The transceiver module is further used to send the target downlink reference signal, and the target downlink reference signal is used to determine the uplink precoding of the uplink signal. The communication device according to claim 28 is characterized in that the second information includes: time-frequency resource parameters of uplink transmission, first parameters, and downlink reference signal trigger indication information, and the first parameter includes at least one of a modulation and coding scheme and a number of spatial division multiplexing streams. The communication device according to claim 28 is characterized in that the second information includes: time-frequency resource parameters of uplink transmission and a first parameter, and the first parameter includes at least one of a modulation and coding scheme and a number of spatial division multiplexing streams. The communication device according to claim 29 or 30 is characterized in that the modulation and coding scheme includes one or more modulation and coding schemes, and the number of spatial division multiplexing streams includes one or more number of spatial division multiplexing streams. The communication device according to any one of claims 28-31 is characterized in that the time-frequency resource parameters of the target downlink reference signal are determined according to preset downlink resource parameters and/or resource configuration parameters during the uplink transmission. The communication device according to any one of claims 27-32 is characterized in that the second information is carried in a wireless resource control message, or the second information is carried in a media access control message, or the second information is carried in a downlink control information message. The communication device according to any one of claims 27-33 is characterized in that the transceiver module is also used to send fourth information, and the fourth information indicates the antenna port corresponding to the transmission of the uplink signal. A communication device, comprising: A transceiver module, configured to receive fifth information, where the fifth information indicates a generation mode of uplink precoding; The transceiver module is further configured to receive second information indicating a resource configuration parameter during uplink transmission when the fifth information indicates that an uplink signal is sent according to a downlink reference signal; The transceiver module is further used to send an uplink signal according to the second information and uplink precoding, wherein the uplink precoding is determined according to a downlink reference signal, and the uplink signal includes an uplink data signal and/or an uplink demodulation reference signal. A communication device, comprising: A transceiver module, configured to send fifth information, where the fifth information indicates a generation mode of uplink precoding; The transceiver module is further configured to send second information when the fifth information indicates that an uplink signal is sent according to a downlink reference signal, wherein the second information indicates a resource configuration parameter during uplink transmission; The transceiver module is further used to receive an uplink signal, wherein the uplink precoding of the uplink signal is determined according to a downlink reference signal, and the uplink signal includes an uplink data signal and/or an uplink demodulation reference signal. A communication device, characterized in that the communication device comprises a processor, and the processor is used to execute the method according to any one of claims 1-18. A computer-readable storage medium, characterized in that the computer-readable storage medium stores computer instructions, and when the computer instructions are executed, the method according to any one of claims 1 to 18 is executed. A chip, characterized in that the chip includes a processor and a communication interface, and the processor and the communication interface are used to support the chip to execute the method described in any one of claims 1-18.