Communication method and related apparatuses

Abstract

A communication method and related apparatuses. In the method, after a first communication apparatus receives a first signal, the first communication apparatus may process the first signal on the basis of a first signal processing mode corresponding to a first parameter, so as to obtain and transmit a second signal. The first signal processing mode is determined on the basis of the first parameter indicating a transmission feature of the first signal, and a mapping relationship between transmission features of signals and signal processing modes. In other words, the mode of the first communication apparatus processing the first signal may be determined on the basis of the transmission feature parameter of the first signal itself. In this way, compared with the implementation process of a signal processing mode of another communication apparatus using signaling to indicate a signal to be transmitted, on the basis of a signal processing mode corresponding to a transmission feature parameter of a signal to be transmitted, the first communication apparatus may process said signal, thereby reducing transmission overheads and improving communication efficiency.

Description

Communication method and related apparatus

[0001] This application claims priority from the Chinese patent application No. CN202410870060.2 filed on June 29, 2024, and entitled "A communication method and related apparatus", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the field of communication, and in particular to a communication method and related apparatus. BACKGROUND

[0003] Wireless communication can refer to transmission communication between multiple communication nodes without propagation through conductors or cables. Generally, network devices and terminal devices can be different communication nodes, and communicate based on a wireless communication manner.

[0004] In a wireless communication scenario, network devices can be deployed in a distributed manner. For example, functional entities in a network device for processing signals are split, and a part of the functional entities are carried on a certain device, and another part of the functional entities are carried on another device, so as to improve the coverage capability of the network device and the flexibility of deployment.

[0005] However, in the above implementation process, how to implement efficient data transmission between different functional entities in the network device is a technical problem to be solved. SUMMARY

[0006] The present application provides a communication method and related apparatus, which are used for reducing transmission overhead and improving communication efficiency.

[0007] The first aspect of the present application provides a communication method, which is performed by a first communication device. The first communication device can be a communication device (such as a baseband unit and / or a radio frequency unit), or the first communication device can be a part of the communication device (such as a circuit or a chip responsible for communication functions (such as a Modem chip, also known as a baseband chip, or a system on chip (SoC) chip or a system in package (SIP) chip containing a modem core), etc.), or the first communication device can also be a logic module or software that can realize all or part of the functions of the communication device. In the method, the first communication device receives a first signal; the first communication device processes the first signal based on a first signal processing manner corresponding to a first parameter to obtain a second signal; wherein the first parameter indicates a transmission characteristic of the first signal, the first signal processing manner is determined based on the first parameter and a first mapping relationship, the first mapping relationship is used to indicate a mapping relationship between N parameters and M signal processing manners, N and M are both positive integers; the N parameters include the first parameter, and the M signal processing manners include the first signal processing manner; any signal processing manner in the M signal processing manners is used to indicate a quantization bit width and / or compression information; and the first communication device transmits the second signal.

[0008] Based on the above scheme, after receiving the first signal, the first communication device can process the first signal based on the first signal processing manner corresponding to the first parameter to obtain and transmit the second signal. Wherein the first parameter indicates the transmission characteristic of the first signal, and the first signal processing manner is determined based on the first parameter and the mapping relationship between the transmission characteristic of the signal and the signal processing manner. In other words, the processing manner of the first communication device for processing the first signal can be determined based on the transmission characteristic parameter of the first signal itself. In this way, compared with the implementation process of indicating the signal processing manner of the transmission signal by signaling by other communication devices, the first communication device can process the transmission signal based on the signal processing manner corresponding to the transmission characteristic parameter of the transmission signal, which can reduce the transmission overhead to improve the communication efficiency.

[0009] In addition, the process of transmitting the second signal by the first communication device can be that the first communication device transmits the second signal to the second communication device through the fronthaul link. Therefore, by using the above scheme, the transmission overhead of the fronthaul link can be reduced.

[0010] It should be understood that the radio frequency unit is a network device with radio frequency signal processing function, the baseband unit is a network device with baseband signal processing function, and the radio frequency unit and the baseband unit can have other names.

[0011] For example, the radio frequency unit is a radio equipment (RE) and the baseband unit is a radio equipment controller (REC).

[0012] For another example, the radio frequency unit is a remote radio unit (RRU) and the baseband unit is a building base band unit (BBU).

[0013] For another example, the radio frequency unit is an active antenna unit (AAU) and the baseband unit is a BBU.

[0014] For another example, the radio frequency unit is a radio unit (RU) and the baseband unit is a distributed unit (DU).

[0015] Optionally, the link between the baseband unit and the radio frequency unit can be referred to as a fronthaul link, a fronthaul interface or a fronthaul network, etc.

[0016] Optionally, the communication interface between the baseband unit and the radio frequency unit can be referred to as a common public radio interface (CPRI) interface, an enhanced common public radio interface (eCPRI) interface, a fronthaul interface in an open radio access network (ORAN or O-RAN), or other interface names, which are not limited here.

[0017] As an example, when the first communication device is a radio frequency unit, the first signal can be an uplink signal. Correspondingly, after the first communication device processes the first signal to obtain a second signal, the first communication device can send the second signal through a fronthaul link, and the receiver of the second signal is a second communication device. The second communication device can be a baseband unit (or a part of components of the baseband unit, or a logic module or software that implements all or part of the communication device function).

[0018] As another example, when the first communication device is a baseband unit, the first signal can be a downlink signal. Correspondingly, after the first communication device processes the first signal to obtain a second signal, the first communication device can send the second signal through a fronthaul link, and the receiver of the second signal is a second communication device. The second communication device can be a radio frequency unit (or a part of components of the radio frequency unit, or a logic module or software that implements all or part of the communication device function).

[0019] As another example, the first communication device is a device including a radio frequency unit and a baseband unit, the first signal can be an uplink signal or a downlink signal. In the above process, the process of the first communication device sending the second signal can be understood as the radio frequency unit in the first communication device outputting the second signal to the baseband unit, or the baseband unit in the first communication device outputting the second signal to the radio frequency unit.

[0020] Optionally, the compression information can include one or more of an identifier of a compression mode, an identifier of a compression algorithm, and a parameter associated with the compression algorithm.

[0021] For example, the compression mode can include block compression or modulation compression. The block compression can refer to that in block floating point compression, consecutive data blocks are represented as a set of floating point numbers, each data block has a common exponent value, and the coefficient part is compressed as needed. The modulation compression can refer to adjusting the bit width according to the maximum modulation order used on the air interface, thereby reducing the capacity requirement of the front transmission.

[0022] For another example, the compression algorithm can include a lossy compression algorithm and a lossless compression algorithm, such as an artificial intelligence (AI) compression algorithm, an automatic encoder, a Shanno-Fano encoding, a Huffman encoding, a deflate, etc.

[0023] In a possible implementation of the first aspect, any of the N parameters is used to indicate at least one of a modulation and coding scheme (MCS), a number of layers, or signal quality information.

[0024] Based on the above scheme, the N parameters used to indicate the signal transmission characteristics can be implemented in the above-mentioned multiple ways to improve the flexibility of the scheme implementation.

[0025] Optionally, the signal quality information can include one or more of a reference signal received power (RSRP), a reference signal received power quality (RSRQ), or a signal and interference plus noise ratio (SINR).

[0026] In a possible implementation of the first aspect, the method further includes: receiving, by the first communication device, first information, the first information being used to indicate the first mapping relationship.

[0027] Based on the above scheme, the first communication device can determine the first mapping relationship through the first information sent by another communication device (for example, the second communication device or the third communication device described later, etc.), so that the first communication device can process the transmitted signal through the mapping relationship specified by the other communication device.

[0028] Optionally, the first mapping relationship can be preconfigured.

[0029] In a possible implementation of the first aspect, the first mapping relationship is determined based on second information, the second information being used to indicate system capacity and / or signal quality information.

[0030] Based on the above scheme, after the first communication device obtains one or more mapping relationships through configuration or pre-configuration, the first communication device can select one of the one or more mapping relationships as the first mapping relationship based on the second information, so that the first communication device can process the transmitted signal based on the mapping relationship matching the system capacity and / or signal quality information.

[0031] In a possible implementation of the first aspect, the first mapping relationship is one of K mapping relationships, K being a positive integer; the method further includes: receiving, by the first communication device, third information, the third information being used to indicate the K mapping relationships.

[0032] Based on the above scheme, the first communication device can determine the K mapping relationships containing the first mapping relationship through the third information sent by another communication device (for example, the second communication device or the third communication device described later, etc.), so that the first communication device can process the transmitted signal based on the K mapping relationships specified by the other communication device.

[0033] In a possible implementation of the first aspect, the method further includes: sending, by the first communication device, fourth information, the fourth information being used to indicate the first signal processing mode.

[0034] Based on the above scheme, after the first communication device determines the first signal processing mode, the first communication device can also indicate the first signal processing mode through the sent fourth information, so that the receiver of the fourth information can process the received signal based on the indication of the fourth information.

[0035] For example, the fourth information is received by the second communication device, and the second communication device is capable of performing dequantization processing and / or decompression processing, etc. on the received second signal. Optionally, the second communication device can perform processing on the received second signal through the first mapping relationship configured or preconfigured, and transmission overhead of the fourth information can be saved.

[0036] In a possible implementation of the first aspect, in the case that the first communication device is a radio frequency unit, the method further includes: the first communication device sending fifth information to the second communication device (for example, a distributed unit), the fifth information being used to indicate a second signal processing manner; the first communication device sending a first uplink signal to the second communication device; the second communication device performing processing on the first uplink signal based on the second signal processing manner to obtain a second uplink signal; and the second communication device sending the second uplink signal to the centralized unit.

[0037] Based on the above scheme, in the case that the first communication device is a radio frequency unit, the first communication device can further send fifth information to the second communication device (for example, a baseband unit), so that the second communication device can perform corresponding processing (for example, dequantization processing and / or decompression processing) on the uplink signal from the first communication device based on the second signal processing manner indicated by the fifth information.

[0038] Optionally, the second communication device can perform processing on the received uplink signal through one or more mapping relationships configured or preconfigured, and transmission overhead of the fifth information can be saved.

[0039] In a possible implementation of the first aspect, in the case that the first communication device is a baseband unit, the method further includes: the first communication device sending sixth information to the second communication device (for example, a radio frequency unit), the sixth information being used to indicate a third signal processing manner; the first communication device sending a first downlink signal to the second communication device; the second communication device performing processing on the first downlink signal based on the third signal processing manner to obtain a second downlink signal; and the second communication device sending the second downlink signal to the terminal device.

[0040] Based on the above scheme, in the case that the first communication device is a baseband unit, the first communication device can further send sixth information to the second communication device (for example, a radio frequency unit), so that the second communication device can perform corresponding processing (for example, dequantization processing and / or decompression processing) on the downlink signal from the first communication device based on the third signal processing manner indicated by the sixth information.

[0041] Optionally, the second communication device can perform processing on the received downlink signal through one or more mapping relationships configured or preconfigured, and transmission overhead of the sixth information can be saved.

[0042] The second aspect of the present application provides a communication method, which is performed by a third communication device. The third communication device can be a communication device (e.g., a network device or a centralized unit (CU)), or the third communication device can be a part of the communication device (e.g., a circuit or a chip responsible for communication functions (e.g., a modem chip, also known as a baseband chip, or a SoC chip or a SIP chip containing a modem core, etc.), or the third communication device can also be a logic module or software capable of implementing all or part of the functions of the communication device. In the method, the third communication device determines third information, which is used to indicate K mapping relationships, K being a positive integer; each of the K mapping relationships is used to indicate a mapping relationship between one or more parameters and one or more signal processing manners; the one or more signal processing manners are used to process signals between a first communication device and a second communication device; any of the one or more signal processing manners is used to indicate a quantization bit width and / or compression information; and the third communication device transmits the third information.

[0043] Based on the above scheme, after the third communication device transmits the third information, a receiver (e.g., the first communication device) of the third information can determine the K mapping relationships based on the third information. Each of the K mapping relationships is used to indicate a mapping relationship between one or more parameters and one or more signal processing manners; the one or more signal processing manners are used to process signals between a first communication device and a second communication device; and any of the one or more signal processing manners is used to indicate a quantization bit width and / or compression information. In this way, compared with the implementation process of indicating the signal processing manner of the transmission signal through signaling by other communication devices, the receiver of the third information can process the transmission signal based on the signal processing manner corresponding to the transmission characteristic parameter of the transmission signal, which can reduce the transmission overhead and improve the communication efficiency.

[0044] In a possible implementation manner of the second aspect, any of the N parameters is used to indicate at least one of the following: a modulation and coding scheme (MCS), a number of layers, or signal quality information.

[0045] Based on the above scheme, the N parameters used to indicate the signal transmission characteristics can be implemented in the above-mentioned multiple ways to improve the flexibility of the implementation of the scheme.

[0046] In a possible implementation manner of the second aspect, the method further includes: the third communication device transmits first information, which is used to indicate a first mapping relationship in the K mapping relationships.

[0047] Based on the above scheme, the third communication device can further send the first information, so that the receiver (e.g., the first communication device) of the first information can determine one of the K mapping relationships (i.e., the first mapping relationship) through the first information sent by the third communication device, so that the receiver of the first information can process the signal transmitted by the receiver through the mapping relationship specified by the other communication device.

[0048] The third aspect of the present application provides a communication device, which is a first communication device, comprising a transceiver unit and a processing unit; the transceiver unit is configured to receive a first signal; the processing unit is configured to process the first signal based on a first signal processing manner corresponding to a first parameter to obtain a second signal; wherein the first parameter indicates a transmission characteristic of the first signal, the first signal processing manner is determined based on the first parameter and a first mapping relationship, the first mapping relationship is used to indicate a mapping relationship between N parameters and M signal processing manners, N and M are positive integers; the N parameters include the first parameter, and the M signal processing manners include the first signal processing manner; any signal processing manner in the M signal processing manners is used to indicate a quantization bit width and / or compression information; the transceiver unit is further configured to send the second signal.

[0049] In the third aspect of the present application, the constituent modules of the communication device can also be used to perform the steps performed in the various possible implementation manners of the first aspect and achieve the corresponding technical effects, which can be referred to the first aspect for details and will not be described here.

[0050] The fourth aspect of the present application provides a communication device, which is a second communication device, comprising a transceiver unit and a processing unit, the processing unit is configured to determine third information, the third information is used to indicate K mapping relationships, K is a positive integer; wherein each mapping relationship in the K mapping relationships is used to indicate a mapping relationship between one or more parameters and one or more signal processing manners; the one or more signal processing manners are used to process signals between the first communication device and the second communication device; any signal processing manner in the one or more signal processing manners is used to indicate a quantization bit width and / or compression information; the transceiver unit is configured to send the third information.

[0051] In the fourth aspect of the present application, the constituent modules of the communication device can also be used to perform the steps performed in the various possible implementation manners of the second aspect and achieve the corresponding technical effects, which can be referred to the second aspect for details and will not be described here.

[0052] The fifth aspect of the present application provides a communication apparatus, comprising at least one processor coupled with a memory; the memory is configured to store programs or instructions; the at least one processor is configured to execute the programs or instructions, so that the apparatus implements the method of any possible implementation manner of any one of the first aspect to the second aspect. Optionally, the communication apparatus can comprise the memory.

[0053] The sixth aspect of the present application provides a communication apparatus, comprising at least one logic circuit and an input / output interface; the logic circuit is configured to execute the method of any possible implementation manner of any one of the first aspect to the second aspect.

[0054] The seventh aspect of the present application provides a communication system, comprising the first communication apparatus and the second communication apparatus.

[0055] The eighth aspect of the present application provides a computer readable storage medium, configured to store one or more computer execution instructions; when the computer execution instructions are executed by a processor, the processor executes the method of any possible implementation manner of any one of the first aspect to the second aspect.

[0056] The ninth aspect of the present application provides a computer program product (or computer program), when the computer program in the computer program product is executed by a processor, the processor executes the method of any possible implementation manner of any one of the first aspect to the second aspect.

[0057] The tenth aspect of the present application provides a chip or chip system, comprising at least one processor, configured to support the communication apparatus to implement the method of any possible implementation manner of any one of the first aspect to the second aspect. For example, the chip can be a baseband chip, a modem chip, a SoC chip (such as a SoC chip containing a modem core), a SIP chip, or a communication module, etc.

[0058] In a possible design, the chip or chip system can further comprise a memory, configured to store necessary programs and data of the communication apparatus. The chip system can be composed of a chip, or can comprise a chip and other discrete devices. Optionally, the chip system further comprises an interface circuit, configured to provide programs and / or data for the at least one processor.

[0059] The technical effects brought by any one of the third aspect to the tenth aspect can be referred to the technical effects brought by different design manners of the first aspect to the second aspect, which will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0060] FIG. 1 to FIG. 3 are some schematic diagrams of application scenarios provided by the present application;

[0061] FIG. 4 is a schematic diagram of a communication method provided by the present application;

[0062] FIG. 5a, FIG. 5b, FIG. 6a and FIG. 6b are some schematic diagrams of a communication method provided by the present application;

[0063] FIG. 7 to FIG. 11 are some schematic diagrams of a communication device provided by the present application. DETAILED DESCRIPTION

[0064] First, some terms in the present application are explained to facilitate understanding by those skilled in the art.

[0065] (1) Terminal device: can be a wireless terminal device capable of receiving network device scheduling and indication information. The wireless terminal device can be a device that provides voice and / or data connectivity to a user, or a handheld device with wireless connection function, or other processing devices connected to a wireless modem.

[0066] The terminal device can communicate with one or more core networks or the Internet through a radio access network (RAN). The terminal device can also be referred to as a terminal, user equipment (UE), mobile station, mobile terminal, etc. The terminal device can be widely used in various scenarios, such as device-to-device (D2D), vehicle to everything (V2X) communication, machine-type communication (MTC), internet of things (IOT), ultra-reliable low-latency communication (URLLC), virtual reality, augmented reality, industrial control, autonomous driving, remote medical treatment, smart grid, smart furniture, smart office, smart wear, smart transportation, smart city, or satellite communication, etc. The terminal can be a mobile phone, tablet computer, computer with wireless transceiver function, wearable device, vehicle, unmanned aerial vehicle, helicopter, airplane, hot air balloon, ship, robot, mechanical arm, or smart home device, etc. The embodiments of the present application do not limit the device form of the terminal.

[0067] (2) Network device: can be a device in a wireless network. For example, the network device can be a radio access network (RAN) node (or device) that accesses the terminal device to the wireless network.

[0068] In some implementations, the network device can further include a satellite, an aircraft, etc.

[0069] In addition, in other possible cases, the network device can be other apparatuses that provide wireless communication functions for the terminal device. The specific technology and specific device form adopted by the network device are not limited in the present application. The present application is not limited.

[0070] Optionally, the network device can further include a core network device, for example, including an access and mobility management function (AMF), a user plane function (UPF), or a session management function (SMF), etc.

[0071] In the present application, the apparatus for implementing the function of the network device can be the network device, or an apparatus capable of supporting the network device to implement the function, such as a processor, a circuit, a chip, or a chip system, etc., which can be installed in the network device or connected with the network device for use. In the technical solutions provided in the present application, the apparatus for implementing the function of the network device is taken as an example to describe the technical solutions provided in the present application.

[0072] In the present application, the apparatus for implementing the function of the terminal device can be the terminal device, or an apparatus capable of supporting the terminal device to implement the function, such as a processor, a circuit, a chip, or a chip system, etc., which can be installed in the terminal device or connected with the terminal device for use. In the technical solutions provided in the present application, the apparatus for implementing the function of the terminal device is taken as an example to describe the technical solutions provided in the present application.

[0073] (3) Configuration and pre-configuration: in the present application, configuration and pre-configuration will be used simultaneously. Among them, configuration refers to that the network device / server sends some parameter configuration information or parameter values to the terminal through messages or signaling, so that the terminal determines the communication parameters or resource in transmission according to the values or information. The pre-configuration is similar to the configuration, which can be the parameter information or parameter value agreed by the network device / server and the terminal device in advance, or the parameter information or parameter value adopted by the base station / network device or the terminal device according to the standard protocol, or the parameter information or parameter value pre-stored in the base station / server or the terminal device. The present application does not make any limitation.

[0074] Further, the values and parameters can be changed or updated.

[0075] (4) The terms "system" and "network" in the embodiments of the present application can be used interchangeably. "Multiple" means two or more. "And / or" describes the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can represent the following three cases: A exists alone, A and B exist simultaneously, and B exists alone, where A and B can be singular or plural. The character " / " generally represents an "or" relationship between the associated objects. "At least one of the following" or similar expressions means any combination of these items, including any combination of single or multiple items. For example, "at least one of A, B, and C" includes A, B, C, AB, AC, BC, or ABC. In addition, unless otherwise specified, the ordinal numbers "first", "second", etc. mentioned in the embodiments of the present application are used to distinguish multiple objects, and are not used to limit the order, time sequence, priority or importance of the multiple objects.

[0076] (5) In the embodiments of the present application, "sending" and "receiving" represent the direction of signal transmission. For example, "sending information to XX" can be understood as that the destination of the information is XX, which can include direct sending through the air interface, or indirect sending through the air interface by other units or modules. "Receiving information from YY" can be understood as that the source of the information is YY, which can include direct receiving from YY through the air interface, or indirect receiving from YY through the air interface by other units or modules. "Sending" can also be understood as "output" of a chip interface, and "receiving" can also be understood as "input" of a chip interface.

[0077] In other words, sending and receiving can be between devices, such as between network devices and terminal devices, or within devices, such as between components, modules, chips, software modules or hardware modules within a device through a bus, wire or interface.

[0078] It can be understood that the information may be processed as necessary between the source and the destination of the information transmission, such as encoding and modulation, but the destination can understand the valid information from the source. Similar expressions in the present application can be similarly understood, and will not be repeated here.

[0079] (6) In embodiments of the present application, “indication” can include direct indication and indirect indication, and can also include explicit indication and implicit indication. The information indicated by certain information (indication information described below) is referred to as to-be-indicated information. In the implementation process, there are many ways to indicate the to-be-indicated information, for example but not limited to, the to-be-indicated information can be directly indicated, such as the to-be-indicated information itself or an index of the to-be-indicated information. The to-be-indicated information can also be indirectly indicated by indicating other information, where the other information and the to-be-indicated information have an association relationship. The to-be-indicated information can also be indicated only by a part of the to-be-indicated information, and the other part of the to-be-indicated information is known or agreed in advance. For example, the indication of a specific information can be achieved by means of the arrangement order of each information agreed in advance (for example, protocol predefined), thereby reducing the indication overhead to a certain extent. The present application does not limit the specific manner of indication. It can be understood that the indication information can be used to indicate the to-be-indicated information for the sender of the indication information, and the indication information can be used to determine the to-be-indicated information for the receiver of the indication information.

[0080] In the present application, the same or similar parts between different embodiments can be mutually referred to, unless otherwise specified. In the present application, the terms and / or descriptions of different embodiments and the technical features in each method / design / implementation in each embodiment have consistency and can be mutually referred to, unless otherwise specified and logically conflicted. The technical features in different embodiments and the technical features in each method / design / implementation in each embodiment can be combined to form new embodiments, methods, or implementations according to their inherent logical relationship. The implementation modes of the present application described below do not constitute a limitation on the protection scope of the present application.

[0081] The present application can be applied to a long term evolution (LTE) system, a new radio (NR) system, or a future communication system after 5G. The communication system includes at least one network device and / or at least one terminal device.

[0082] Please refer to FIG. 1, which is a schematic diagram of a possible and non-restrictive application scenario provided by the present application. The scheme provided by the present application can be applied to the communication system 10 shown in FIG. 1. As shown in FIG. 1, the communication system 10 includes a radio access network (RAN) 100 and a core network 200. The RAN 100 can include at least one RAN device (such as 110a and 110b in FIG. 1, collectively referred to as 110). The RAN 100 can also include at least one terminal (such as 120a-120j in FIG. 1, collectively referred to as 120). The terminals 120a-120j are connected to the RAN device 110 in a wireless manner. The RAN 100 can also include other RAN devices, such as wireless relay devices and / or wireless backhaul devices (not shown in FIG. 1), etc. The access network device 110 is connected to the core network 200 in a wireless or wired manner. The core network device in the core network and the access network device in the wireless access network can be different physical devices, or can be the same physical device integrated with the core network logic function and the wireless access network logic function, which is not limited. Terminals and terminals can be connected to each other in a wireless manner. Access network devices and access network devices can be connected to each other in a wired or wireless manner. FIG. 1 is only a schematic diagram, and the communication system can also include other network devices, such as wireless relay devices and / or wireless backhaul devices (not shown in FIG. 1).

[0083] For example, in FIG. 1, the RAN 100 can be configured as a 3rd generation partnership project (3GPP) related cellular system. For example, the RAN 100 can be configured as a 4th generation (4G) mobile communication system, a 5th generation (5G) mobile communication system, or a future-oriented evolution system (such as a 6G mobile communication system). Alternatively, the RAN 100 can also be an open RAN (O-RAN or ORAN), a cloud radio access network (CRAN). The RAN 100 can also be a communication system that combines two or more of the above systems.

[0084] The RAN device 110, which can also be referred to as a RAN node, a RAN entity, or an access node, etc., forms part of the communication system, and can be configured to facilitate wireless access to the communication system by terminals. The RAN nodes 110 in the communication system 10 can be of the same type or different types. In some scenarios, the roles of the RAN nodes 110 and the terminals 120 are relative, e.g., the network element 120i in Figure 1 can be a helicopter or a drone, which can be configured to move as a base station, and for a terminal 120j accessing the RAN 100 via the network element 120i, the network element 120i is a base station; but for the base station 110a, the network element 120i is a terminal. The RAN nodes 110 and the terminals 120 are sometimes referred to as communication apparatuses, e.g., the network elements 110a and 110b in Figure 1 can be understood as communication apparatuses with base station functionality, and the network elements 120a-120j can be understood as communication apparatuses with terminal functionality.

[0085] In a possible scenario, the access network device can be a base station, an evolved NodeB (eNodeB), a transmission reception point (TRP), a next generation NodeB (gNB) in a 5G mobile communication system, a next generation NodeB in a 6th generation (6G) mobile communication system, or an access node in a base station in a future mobile communication system, etc. The access network device can be a macro base station (e.g., 110a in Figure 1), a micro base station or an indoor station (e.g., 110b in Figure 1), a relay node or a donor node, or a wireless controller in a CRAN scenario. Optionally, the access network device can also be a server, a wearable device, or a vehicle-mounted device, etc. For example, the access network device in a vehicle to everything (V2X) technology can be a road side unit (RSU). The access network devices in the communication system can be of the same type or different types. The base station can communicate with the terminal directly or through a relay station. The terminal can communicate with multiple base stations of different access technologies.

[0086] In another possible scenario, a terminal is assisted by multiple RAN nodes to implement wireless access, and different RAN nodes respectively implement part of functions of a base station. For example, a RAN node can be a central unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU), etc. The CU and the DU can be separately arranged, or can also be included in the same network element, such as a baseband unit (BBU). The RU can be included in a radio frequency device or a radio frequency unit, such as a radio remote unit (RRU), an active antenna unit (AAU), or a remote radio head (RRH).

[0087] In different systems, the CU (or CU-CP and CU-UP), DU or RU can also have different names, but those skilled in the art can understand their meanings. For example, in an ORAN system, the CU can also be referred to as an O-CU (open CU), the DU can also be referred to as an O-DU, the CU-CP can also be referred to as an O-CU-CP, the CU-UP can also be referred to as an O-CU-UP, and the RU can also be referred to as an O-RU. For the convenience of description, the CU, CU-CP, CU-UP, DU and RU are taken as examples for description in this application. Any one of the CU (or CU-CP, CU-UP), DU and RU in this application can be implemented by a software module, a hardware module, or a combination of a software module and a hardware module. The CU (or CU-CP and CU-UP), DU and RU can implement different protocol layer functions.

[0088] The communication between the access network device and the terminal device can follow a certain protocol layer structure. The protocol layer can include a control plane protocol layer and a user plane protocol layer. The control plane protocol layer can include at least one of a radio resource control (RRC) layer, a packet data convergence protocol (PDCP) layer, a radio link control (RLC) layer, a media access control (MAC) layer, or a physical (PHY) layer, etc. The user plane protocol layer can include at least one of a service data adaptation protocol (SDAP) layer, a PDCP layer, an RLC layer, a MAC layer, or a physical layer, etc.

[0089] As an implementation example, as shown in FIG. 2, the access network device can include at least one CU and at least one DU. This design can be referred to as CU and DU separation. One CU can be connected with one or more DUs. The CU and the DU can be divided according to the protocol layer of the wireless network: for example, the functions of the PDCP layer and the protocol layers above the PDCP layer (such as the RRC layer and the SDAP layer, etc.) are arranged in the CU, and the functions of the protocol layers below the PDCP layer (such as the RLC layer, the MAC layer, and the PHY layer, etc.) are arranged in the DU; for another example, the functions of the protocol layers above the PDCP layer are arranged in the CU, and the functions of the protocol layers at and below the PDCP layer are arranged in the DU, which is not limited. When the CU includes a CU-CP and a CU-UP, the CU-CP is used to implement the control plane function of the CU, and the CU-UP is used to implement the user plane function of the CU. For example, the CU is configured to implement the functions of the PDCP layer, the RRC layer, and the SDAP layer, the CU-CP is used to implement the RRC layer function and the control plane function of the PDCP layer, and the CU-UP is used to implement the SDAP layer function and the user plane function of the PDCP layer. The name of the CU and the DU is not limited in the present application, for example, the CU can be referred to as a first access network element, and the DU can be referred to as a second access network element, etc.

[0090] The above-mentioned processing functions of the CU and the DU are merely examples according to the protocol layer division, and can be divided in other manners. For example, the CU or the DU can be divided into more protocol layers, or the CU or the DU can be divided into partial processing functions of the protocol layers. For example, partial functions of the RLC layer and functions of the protocol layers above the RLC layer are arranged in the CU, and the remaining functions of the RLC layer and functions of the protocol layers below the RLC layer are arranged in the DU. For another example, the functions of the CU or the DU can be divided according to service types or other system requirements, for example, according to time delay. Functions that require a shorter time delay can be arranged in the DU, and functions that do not require the time delay can be arranged in the CU.

[0091] The CU can be connected to a core network. Optionally, the CU can have partial functions of the core network.

[0092] Further, partial functions of the DU can be arranged separately. As shown in FIG. 2, the partial functions can be implemented by a radio unit (RU). The RU can have a radio frequency function. The name of the RU is not limited in the present application, for example, the RU can be referred to as a third access network element, etc. The DU and the RU can be split or separated at the PHY layer. For example, the DU can implement high-layer functions in the PHY layer, and the RU can implement low-layer functions in the PHY layer or implement the low-layer functions and the radio frequency functions. The high-layer functions in the PHY layer include functions closer to the MAC layer, and the low-layer functions in the PHY layer include functions closer to the radio frequency. For example, the high-layer functions in the PHY layer include one or more of the following: forward error correction (FEC) encoding / decoding, scrambling, or modulation / demodulation. The low-layer functions in the PHY layer include one or more of the following: fast Fourier transform (FFT) transform / inverse fast Fourier transform (iFFT) transform, beamforming, or extraction and filtering of a physical random access channel (PRACH), etc. The RU can perform radio frequency signal communication with the terminal device through an air interface. The precoding function in the PHY layer can be located in the DU or in the RU. The split manner between the DU and the RU can be various possible manners, which are not limited.

[0093] There is an interface between the DU and the RU. For example, according to different splitting manners, the interface between the DU and the RU can be a common public radio interface (CPRI) interface or an enhanced common public radio interface (eCPRI) interface.

[0094] As shown in FIG. 3, an architecture of an access network device is shown. The access network device includes one or more functional modules to implement processing of signals. As shown in FIG. 3, taking a physical layer function as an example, the access network device includes one or more of the following functions: encoding, rate matching, scrambling, modulation, layer mapping, precoding, resource element (RE) mapping, digital beamforming (BF), inverse fast Fourier transformation (IFFT) / adding a cyclic prefix (CP), decoding, de-rate matching, descrambling, demodulation, inverse discrete Fourier transformation (IDFT), channel equalization (or channel estimation), de-RE mapping, digital BF, fast Fourier transform (FFT) / CP removal, digital to analog (DA) conversion, analog BF, analog to digital (AD) conversion, or analog BF.

[0095] The one or more functional modules described above can be implemented by software, hardware, or a combination of software and hardware. They can be discrete or integrated physically. It can be understood that the functional modules described above are only examples, and the access network device can include more other modules (such as a scheduling module, a power control module, a hybrid automatic repeat request (HARQ) module, a flow control module, a mobility management module, or an artificial intelligence (AI) module, etc.) according to design, or does not include a certain functional module (such as a digital BF module) shown in FIG. 3. The access network device further includes a fronthaul (FH) interface between the DU and the RU, for realizing communication between the DU and the RU. The fronthaul interface includes but is not limited to CPRI or eCPRI. In a possible implementation, the DU is located in a BBU, and the RU is located in a RRU / AAU / RRH. The interface between the BBU and the RRU / AAU / RRH can also be referred to as a fronthaul interface. To realize the fronthaul interface, the BBU and the RRU / AAU / RRH can be connected through a fronthaul network, or the DU and the RU can be connected through a fronthaul network. For example, the fronthaul network includes but is not limited to a fiber direct connection or a wavelength division network.

[0096] The access network device can support one or more types of fronthaul interfaces, and different fronthaul interfaces correspond to DUs and RUs with different functions respectively. As shown in FIG. 3, if the fronthaul interface between the DU and the RU is CPRI, the DU is configured to implement one or more of baseband functions, and the RU is configured to implement one or more of radio frequency functions. If the fronthaul interface between the DU and the RU is eCPRI, part of the baseband functions of the downlink and / or uplink are moved from the DU to the RU for implementation, compared with CPRI. The splitting manner between the DU and the RU is different, corresponding to different categories (Cat) of eCPRI. FIG. 3 gives six examples of eCPRI, denoted as Cat A, B, C, D, E, and F (which can also be denoted as Option A to F, or Option 1 to 6, or other manners). It can be understood that there can be other splitting manners between the DU and the RU, that is, there can be other types of eCPRI.

[0097] For eCPRI Cat A, for downlink transmission, the DU is configured to implement layer mapping and one or more functions before layer mapping (i.e., one or more of encoding, rate matching, scrambling, modulation, layer mapping), while other functions after layer mapping (e.g., one or more of RE mapping, digital BF, or IFFT / add CP) are implemented in the RU. For uplink transmission, the DU is configured to implement de-mapping and one or more functions before de-mapping (i.e., one or more of decoding, de-rate matching, de-scrambling, de-modulation, IDFT, channel equalization, de-RE mapping), while other functions after de-mapping (e.g., one or more of digital BF or FFT / CP removal) are implemented in the RU.

[0098] Similarly, for eCPRI Cat B, Cat C, Cat D, Cat E, Cat F, different DUs and RUs are configured for different splitting manners. For each type of eCPRI, the splitting point and the functions before the splitting point are implemented by the DU, while the functions after the splitting point are implemented by the RU. The splitting points for each type of eCPRI are shown in FIG. 3, and will not be described in detail. For example, for eCPRI Cat B, RE mapping is used as the splitting point for downlink transmission, and de-RE mapping is used as the splitting point for uplink transmission. For uplink transmission, RE mapping and the functions before RE mapping are implemented by the DU, while the functions after RE mapping and the radio frequency functions are implemented by the RU. For downlink transmission, de-RE mapping and the functions before de-RE mapping are implemented by the DU, while the functions after de-RE mapping and the radio frequency functions are implemented by the RU.

[0099] The splitting manners of eCPRI can be symmetric for uplink and downlink, such as eCPRI Cat B and Cat C shown in FIG. 3, or asymmetric for uplink and downlink, such as eCPRI Cat A, Cat D, Cat E, and Cat F shown in FIG. 3, without limitation. Optionally, for uplink and / or downlink, different splitting manners can be configured for different channels or different channel groups, i.e., different types of eCPRI are configured. One or more channels can be included in a channel group.

[0100] In one possible design, the DU is located in the BBU, and the RU is located in the RRU / AAU / RRH. The processing module in the BBU for implementing baseband functions is referred to as a base band high (BBH) unit, and the processing module in the RRU / AAU / RRH for implementing baseband functions is referred to as a base band low (BBL) unit.

[0101] In a wireless communication scenario, network devices can be deployed in a distributed manner. For example, functional entities in a network device for processing signals are split, and one part of the functional entities is carried on one device and another part of the functional entities is carried on another device, so as to improve the coverage capability of the network device and the flexibility of deployment. However, in the above implementation process, how to implement efficient data transmission between different functional entities in the network device is a technical problem to be solved.

[0102] In a possible implementation, taking the DU and the RU shown in FIG. 2 and FIG. 3 as an example, the DU and the RU can communicate through a front-haul interface. With the growth of mobile data, the data transmitted on the front-haul interface is also growing, but the capacity of the front-haul link is limited, and therefore some processing is currently supported on the data on the front-haul link to reduce the bandwidth of the front-haul. For example, the processing can include compression and / or reducing quantization bit width of the data. In the data transmission process, the DU and the RU can indicate the compression manner and / or the quantization bit width to the opposite end through signaling. However, the data transmitted between the DU and the RU is increasing, and the signaling indicating the signal processing manner of the transmitted signal is needed every time the data is transmitted, which can easily cause the transmission overhead of the link to increase, and further affect the communication efficiency.

[0103] To solve the above problem, the present application provides a communication method and related devices. More details will be described below in combination with more drawings.

[0104] Please refer to FIG. 4, which is a schematic diagram of a communication method provided by the present application. The method includes the following steps.

[0105] It should be noted that in the following, the first communication device and other communication devices (for example, N communication devices) in FIG. 4 are taken as an example to illustrate the execution subject of the interaction, but the present application does not limit the execution subject of the interaction. For example, the communication device can be a communication device (such as a terminal device or a network device), or a chip, a baseband chip, a modem chip, a SoC chip (such as a SoC chip containing a modem core), a SIP chip, a communication module, a chip system, a processor, a logic module or software in the communication device, etc.

[0106] S401. The first communication device receives a first signal from other communication devices.

[0107] It should be understood that the first signal can be an uplink signal, i.e., the other communication device that transmits the first signal to the first communication device in step S401 can be a terminal device (see the implementation scenario described below with reference to FIG. 5a or FIG. 6a). Alternatively, the first signal can be a downlink signal, i.e., the other communication device that transmits the first signal to the first communication device in step S401 can be a distributed unit or a centralized unit (see the implementation scenario described below with reference to FIG. 5b or FIG. 6b).

[0108] Optionally, the first signal can be used to carry one or more of signaling, data, and information. Accordingly, the signal involved in the present application can be replaced by one or more of signaling, data, and information.

[0109] For example, the first signal can be first signaling, first data, first information, etc.

[0110] For another example, the second signal described below can be second signaling, second data, second information, etc.

[0111] For another example, in the case where the first signal is used for downlink transmission, the first signal can be first downlink signaling, first downlink data, first downlink information, etc.

[0112] For another example, in the case where the first signal is used for uplink transmission, the first signal can be first uplink signaling, first uplink data, first uplink information, etc.

[0113] For another example, in the case where the second signal is used for downlink transmission, the second signal can be second downlink signaling, second downlink data, second downlink information, etc.

[0114] For another example, in the case where the second signal is used for uplink transmission, the second signal can be second uplink signaling, second uplink data, second uplink information, etc.

[0115] S402. The first communication device processes the first signal based on a first signal processing manner corresponding to a first parameter to obtain a second signal. The first parameter indicates a transmission characteristic of the first signal, and the first signal processing manner is determined based on the first parameter and a first mapping relationship. The first mapping relationship is used to indicate a mapping relationship between N parameters and M signal processing manners, where N and M are positive integers. The N parameters include the first parameter, and the M signal processing manners include the first signal processing manner. Any signal processing manner in the M signal processing manners is used to indicate a quantization bit width and / or compression information.

[0116] It should be understood that the quantization bit width can indicate the number of bits after quantization of data.

[0117] Optionally, the compression information can include one or more of an identification of a compression manner, an identification of a compression algorithm, and parameters associated with the compression algorithm.

[0118] For example, the compression manner can include block compression, modulation compression, or the like. The block compression can refer to that in block floating point compression, continuous data blocks are represented as a set of floating point numbers, each data block has a common exponent value, and the coefficient part is compressed as needed. The modulation compression can refer to adjusting the bit width according to the maximum modulation order used on the air interface, thereby reducing the capacity requirement of the fronthaul.

[0119] For another example, the compression algorithm can include a lossy compression algorithm and a lossless compression algorithm, such as an artificial intelligence (AI) compression algorithm, an automatic encoder, Shanno-Fano encoding, Huffman encoding, deflate, or the like.

[0120] In a possible implementation, any parameter (for example, a first parameter) of the N parameters is used to indicate at least one of a modulation and coding scheme (MCS), a layer number, or signal quality information. Thus, the N parameters used to indicate the signal transmission characteristics can be implemented in the above-mentioned multiple ways, so as to improve the flexibility of the scheme implementation.

[0121] Optionally, the layer number can be replaced by other descriptions, such as a rank number.

[0122] Optionally, the signal quality information can include one or more of a reference signal received power (RSRP), a reference signal received power quality (RSRQ), or a signal and interference plus noise ratio (SINR).

[0123] As an example, in the case that the signal quality information comprises layer 1 measurement results (e.g. one or more of RSRP, RSRQ, SINR), the first communication device can obtain the layer 1 measurement results through the DU or the RU. For example, in the case that the first communication device is a DU, if the module for determining the layer 1 measurement results is located at the DU, the first communication device can obtain the layer 1 measurement results locally; if the module for determining the layer 1 measurement results is located at the RU, the first communication device can obtain the layer 1 measurement results based on the indication of the RU. For another example, in the case that the first communication device is a RU, if the module for determining the layer 1 measurement results is located at the RU, the first communication device can obtain the layer 1 measurement results locally; if the module for determining the layer 1 measurement results is located at the DU, the first communication device can obtain the layer 1 measurement results based on the indication of the DU.

[0124] As another example, in the case that the signal quality information comprises layer 3 measurement results (e.g. one or more of RSRP, RSRQ, SINR), the first communication device can obtain the layer 3 measurement results through the CU.

[0125] S403. The first communication device sends a second signal, and correspondingly, the second communication device receives the second signal.

[0126] It should be understood that the first communication device can be a network device comprising a radio frequency unit and / or a baseband unit. The radio frequency unit is a network device with radio frequency signal processing function (optionally, the radio frequency unit also has part of the baseband signal processing function), the baseband unit is a network device with baseband signal processing function (optionally, the radio frequency unit also has part of the radio frequency signal processing function), and the radio frequency unit and the baseband unit can have other names.

[0127] For example, the radio frequency unit is a radio equipment (RE) and the baseband unit is a radio equipment controller (REC).

[0128] For another example, the radio frequency unit is a remote radio unit (RRU) and the baseband unit is a building base band unit (BBU).

[0129] For another example, the radio frequency unit is an active antenna unit (AAU) and the baseband unit is a BBU.

[0130] For another example, the radio frequency unit is a radio unit (RU) and the baseband unit is a distributed unit (DU).

[0131] Optionally, the link between the baseband unit and the radio unit can be referred to as a fronthaul link, a fronthaul interface or a fronthaul network, etc.

[0132] Optionally, the communication interface between the baseband unit and the radio unit can be referred to as a common public radio interface (CPRI) interface, an enhanced common public radio interface (eCPRI) interface, a fronthaul interface in an open radio access network (ORAN or O-RAN), or other interface names, which are not limited here.

[0133] As an example, when the first communication device is a radio unit, the first signal can be an uplink signal. Correspondingly, after the first communication device processes the first signal to obtain a second signal, the first communication device can send the second signal through the fronthaul link, and the receiver of the second signal is a second communication device. The second communication device can be a baseband unit (or a part of components of the baseband unit, or a logic module or software that implements all or part of the communication device function). For ease of understanding, the following describes this case through the example shown in FIG. 5a.

[0134] As shown in FIG. 5a, the first communication device can be a radio unit in FIG. 5a, the other communication device that sends the first signal to the first communication device in step A1 can be a terminal device in FIG. 5a (i.e., the first signal is an uplink signal), and the second communication device that receives the second signal in step A3 can be a baseband unit in FIG. 5a. Steps A1, A2 and A3 can refer to the descriptions of steps S401, S402 and S403 respectively.

[0135] As another example, when the first communication device is a baseband unit, the first signal can be a downlink signal. Correspondingly, after the first communication device processes the first signal to obtain a second signal, the first communication device can send the second signal through the fronthaul link, and the receiver of the second signal is a second communication device. The second communication device can be a radio unit (or a part of components of the radio unit, or a logic module or software that implements all or part of the communication device function). For ease of understanding, the following describes this case through the example shown in FIG. 5b.

[0136] As shown in FIG. 5b, the first communication device can be the baseband unit in FIG. 5b, the other communication device sending the first signal to the first communication device in step B1 can be the centralized unit in FIG. 5b (i.e. the first signal is a downlink signal), and the second communication device receiving the second signal in step B3 can be the radio frequency unit in FIG. 5b. Wherein, steps B1, B2 and B3 can refer to the descriptions of steps S401, S402 and S403 respectively.

[0137] As another example, in the case that the first communication device is a device containing a radio frequency unit and a baseband unit, the first signal can be an uplink signal or a downlink signal. In the above process, the process that the first communication device sends the second signal can be understood as that the radio frequency unit in the first communication device outputs the second signal to the baseband unit, or the baseband unit in the first communication device outputs the second signal to the radio frequency unit. For the convenience of understanding, the following examples shown in FIG. 6a and FIG. 6b are used to illustrate this case.

[0138] As shown in FIG. 6a, the first communication device can be the radio frequency unit inside the network device in FIG. 6a, the second communication device can be the baseband unit inside the network device in FIG. 6a, the other communication device sending the first signal to the first communication device in step C1 can be the terminal device in FIG. 6a (i.e. the first signal is an uplink signal), and the transmission process of the second signal in step C3 can be understood as the signal transmission between the radio frequency unit and the baseband unit inside the network device. Wherein, steps C1, C2 and C3 can refer to the descriptions of steps S401, S402 and S403 respectively.

[0139] As shown in FIG. 6b, the first communication device can be the baseband unit inside the network device in FIG. 6b, the second communication device can be the radio frequency unit inside the network device in FIG. 6b, the other communication device sending the first signal to the first communication device in step D1 can be the centralized unit in FIG. 6b (i.e. the first signal is a downlink signal), and the transmission process of the second signal in step D3 can be understood as the signal transmission between the radio frequency unit and the baseband unit inside the network device. Wherein, steps D1, D2 and D3 can refer to the descriptions of steps S401, S402 and S403 respectively.

[0140] Optionally, in FIG. 6b, the centralized unit can also be inside the network device in the figure.

[0141] Based on the scheme shown in FIG. 4, after receiving the first signal, the first communication device can process the first signal based on the first signal processing manner corresponding to the first parameter to obtain and send the second signal. Wherein, the first parameter indicates the transmission characteristic of the first signal, the first signal processing manner is determined based on the first parameter and the mapping relationship between the transmission characteristic of the signal and the signal processing manner. In other words, the processing manner of the first communication device for processing the first signal can be determined based on the transmission characteristic parameter of the first signal itself. Through this way, compared with the implementation process of indicating the signal processing manner of the transmission signal through signaling by other communication devices, the first communication device can process the transmission signal based on the signal processing manner corresponding to the transmission characteristic parameter of the transmission signal, which can reduce the transmission overhead to improve the communication efficiency.

[0142] In addition, the process of the first communication device sending the second signal can be that the first communication device can send the second signal to the second communication device through the front haul link. Therefore, through the above scheme, the transmission overhead of the front haul link can be reduced.

[0143] It should be noted that in the method shown in FIG. 4, the first mapping relationship can be implemented in various ways, including but not limited to tables, formulas, etc., which embody the mapping relationship between N parameters and M signal processing manners. The following takes the implementation of the first mapping relationship through the table as an example to illustrate through some implementation examples.

[0144] As an example, as shown in Table 1 below, any parameter in the N parameters can be used to indicate the MCS, and the M signal processing manners can include M quantization bit widths.

[0145] Table 1

[0146] In Table 1, the values of A1, A2 and A3 can represent different bit numbers, and the values of the bit numbers can be positive numbers. For example, the three items are 8 bits, 10 bits and 12 bits respectively. For another example, the three items are 8 bits, 16 bits and 32 bits respectively. Through Table 2, the first communication device can determine the quantization bit width based on the index of the MCS corresponding to the received first signal, and process the first signal based on the determined quantization bit width to obtain the second signal.

[0147] As another example, as shown in Table 2 below, any parameter in the N parameters can be used to indicate the MCS and the number of layers, and the M signal processing manners can include M quantization bit widths.

[0148] Table 2

[0149] Similarly, through Table 2, the first communication apparatus can determine the quantization bit width based on the index of the MCS corresponding to the received first signal and the number of layers, and process the first signal based on the determined quantization bit width to obtain the second signal.

[0150] As another example, as shown in the following Table 3, any of the N parameters can be used to indicate the SINR, and the M signal processing manners can include M compression manners.

[0151] Table 3

[0152] In Table 3, the values of B1 and B2 can represent different SINR values. Mode 1 and mode 2 can refer to different compression information, respectively. For example, the two items respectively indicate block compression and modulation compression. As another example, the two items are modulation compression and block compression, respectively. Through Table 2, the first communication apparatus can determine the compression manner based on the index of the MCS corresponding to the received first signal, and process the first signal based on the determined compression manner to obtain the second signal.

[0153] Optionally, the SINR can be a layer 1 measurement result, a layer 2 measurement result, or a layer 3 measurement result (i.e., provided by the centralized unit to the first communication apparatus), which is not limited here.

[0154] As another example, as shown in the following Table 4, any of the N parameters can be used to indicate the SINR, and the M signal processing manners can include M compression manners.

[0155] Table 4

[0156] In Table 4, the values of C1 and C2 can represent different RSRP values. Similarly, through Table 4, the first communication apparatus can determine the compression manner based on the RSRP corresponding to the received first signal, and process the first signal based on the determined compression manner to obtain the second signal.

[0157] Optionally, the RSRP can be a layer 1 measurement result, a layer 2 measurement result, or a layer 3 measurement result (i.e., provided by the centralized unit to the first communication apparatus), which is not limited here.

[0158] In a possible implementation, the first communication apparatus can determine the first mapping relationship in a plurality of manners, which will be introduced below in combination with some implementation examples.

[0159] In an example one, the method shown in FIG. 4 further includes: receiving, by the first communication device, first information, the first information being used to indicate the first mapping relationship. In this way, the first communication device can determine the first mapping relationship through the first information sent by another communication device (e.g., the second communication device or the third communication device, which can be a centralized unit or a gateway device or a core network device, etc.), so that the first communication device can process the transmitted signal according to the mapping relationship designated by the other communication device.

[0160] In an example two, the first mapping relationship can be pre-configured. In this way, the overhead of configuring or indicating the first mapping relationship can be reduced.

[0161] In an example three, the first mapping relationship is determined based on second information, the second information being used to indicate system capacity and / or signal quality information. In this way, after the first communication device obtains one or more mapping relationships through configuration or pre-configuration, the first communication device can select one of the one or more mapping relationships as the first mapping relationship based on the second information, so that the first communication device can process the transmitted signal based on the mapping relationship matching the system capacity and / or signal quality information.

[0162] Optionally, the first mapping relationship can be one of K mapping relationships, K being a positive integer. Correspondingly, the method shown in FIG. 4 can further include: receiving, by the first communication device, third information, the third information being used to indicate the K mapping relationships. In this way, the first communication device can determine the K mapping relationships containing the first mapping relationship through the third information sent by another communication device (e.g., the second communication device or the third communication device described later, etc.), so that the first communication device can process the transmitted signal based on the K mapping relationships designated by the other communication device.

[0163] Optionally, the K mapping relationships are pre-configured. In this way, the overhead of configuring or indicating the K mapping relationships can be reduced.

[0164] In a possible implementation, the method shown in FIG. 4 further includes: sending, by the first communication device, fourth information, the fourth information being used to indicate the first signal processing manner. Specifically, after determining the first signal processing manner, the first communication device can also indicate the first signal processing manner through the sent fourth information, so that the receiver of the fourth information can process the received signal based on the indication of the fourth information.

[0165] For example, the fourth information is received by the second communication device, and the second communication device is capable of performing dequantization processing and / or decompression processing, etc. on the received second signal. Optionally, the second communication device can perform processing on the received second signal through the first mapping relationship configured or preconfigured, which can save the transmission overhead of the fourth information.

[0166] As an example, in the case that the first communication device is a radio frequency unit, the method shown in FIG. 4 further includes: the first communication device sends fifth information to the second communication device (for example, a distributed unit), the fifth information being used for indicating a second signal processing manner; the first communication device sends a first uplink signal to the second communication device; the second communication device processes the first uplink signal based on the second signal processing manner to obtain a second uplink signal; and the second communication device sends the second uplink signal to the centralized unit. Specifically, in the case that the first communication device is a radio frequency unit, the first communication device can also send the fifth information to the second communication device (for example, a baseband unit), so that the second communication device can perform corresponding processing (for example, dequantization processing and / or decompression processing) on the uplink signal from the first communication device based on the second signal processing manner indicated by the fifth information.

[0167] Optionally, the second communication device can perform processing on the received uplink signal through one or more mapping relationships configured or preconfigured, which can save the transmission overhead of the fifth information.

[0168] As an example, in the case that the first communication device is a baseband unit, the method shown in FIG. 4 further includes: the first communication device sends sixth information to the second communication device (for example, a radio frequency unit), the sixth information being used for indicating a third signal processing manner; the first communication device sends a first downlink signal to the second communication device; the second communication device processes the first downlink signal based on the third signal processing manner to obtain a second downlink signal; and the second communication device sends the second downlink signal to the terminal device. Specifically, in the case that the first communication device is a baseband unit, the first communication device can also send the sixth information to the second communication device (for example, a radio frequency unit), so that the second communication device can perform corresponding processing (for example, dequantization processing and / or decompression processing) on the downlink signal from the first communication device based on the third signal processing manner indicated by the sixth information.

[0169] Optionally, the second communication device can perform processing on the received downlink signal through one or more mapping relationships configured or preconfigured, which can save the transmission overhead of the sixth information.

[0170] Please refer to FIG. 7, the embodiment of the present application provides a communication device 700, which can realize the functions of the second communication device or the first communication device in the above-mentioned method embodiment, and thus can also realize the beneficial effects possessed by the above-mentioned method embodiment. In the embodiment of the present application, the communication device 700 can be a first communication device (or a second communication device or a third communication device), or an integrated circuit or an element etc. inside the first communication device (or the second communication device or the third communication device), such as a chip.

[0171] It should be noted that the transceiver unit 702 can include a sending unit and a receiving unit, which are respectively used for performing sending and receiving.

[0172] In a possible implementation, when the device 700 is used for executing the method performed by the first communication device in the above-mentioned embodiment, the device 700 includes a processing unit 701 and a transceiver unit 702; the transceiver unit 702 is configured to receive a first signal; the processing unit 701 is configured to process the first signal based on a first signal processing manner corresponding to a first parameter to obtain a second signal; wherein the first parameter indicates a transmission characteristic of the first signal, the first signal processing manner is determined based on the first parameter and a first mapping relationship, the first mapping relationship is used for indicating a mapping relationship between N parameters and M signal processing manners, N and M are positive integers; the N parameters include the first parameter, and the M signal processing manners include the first signal processing manner; any signal processing manner in the M signal processing manners is used for indicating a quantization bit width and / or compression information; and the transceiver unit 702 is further configured to send the second signal.

[0173] In a possible implementation, when the device 700 is used for executing the method performed by the third communication device in the above-mentioned embodiment, the device 700 includes a processing unit 701 and a transceiver unit 702; the processing unit 701 is configured to determine third information, the third information is used for indicating K mapping relationships, K is a positive integer; wherein each mapping relationship in the K mapping relationships is used for indicating a mapping relationship between one or more parameters and one or more signal processing manners; the one or more signal processing manners are used for processing signals between a first communication device and a second communication device; any signal processing manner in the one or more signal processing manners is used for indicating a quantization bit width and / or compression information; and the transceiver unit 702 is configured to send the third information.

[0174] It should be noted that the information execution process etc. of the units of the above-mentioned communication device 700 can be specifically referred to the descriptions in the above-mentioned method embodiments of the present application, and will not be described here.

[0175] Please refer to Fig. 8, which is another schematic structural diagram of a communication apparatus 800 provided in the present application, the communication apparatus 800 comprises a logic circuit 801 and an input / output interface 802. The communication apparatus 800 can be a chip or an integrated circuit.

[0176] The transceiver unit 702 shown in Fig. 7 can be a communication interface, which can be the input / output interface 802 shown in Fig. 8. The input / output interface 802 can comprise an input interface and an output interface. Alternatively, the communication interface can be a transceiver circuit, which can comprise an input interface circuit and an output interface circuit.

[0177] Optionally, the input / output interface 802 is configured to receive a first signal; and the logic circuit 801 is configured to process the first signal based on a first signal processing manner corresponding to a first parameter to obtain a second signal. The first parameter indicates a transmission characteristic of the first signal. The first signal processing manner is determined based on the first parameter and a first mapping relationship. The first mapping relationship is used to indicate a mapping relationship between N parameters and M signal processing manners. N and M are positive integers. The N parameters comprise the first parameter. The M signal processing manners comprise the first signal processing manner. Any one of the M signal processing manners is used to indicate a quantization bit width and / or compression information. The input / output interface 802 is further configured to send the second signal.

[0178] Optionally, the logic circuit 801 is configured to determine third information. The third information is used to indicate K mapping relationships. K is a positive integer. Each of the K mapping relationships is used to indicate a mapping relationship between one or more parameters and one or more signal processing manners. The one or more signal processing manners are used to process a signal between a first communication apparatus and a second communication apparatus. Any one of the one or more signal processing manners is used to indicate a quantization bit width and / or compression information. The input / output interface 802 is configured to send the third information.

[0179] The logic circuit 801 and the input / output interface 802 can also perform other steps and achieve corresponding beneficial effects, which are performed by the first communication apparatus, the second communication apparatus or the third communication apparatus in any embodiment. Here, details are not repeated.

[0180] In a possible implementation, the processing unit 701 shown in Fig. 7 can be the logic circuit 801 shown in Fig. 8.

[0181] Optionally, the logic circuit 801 can be a processing apparatus. The functions of the processing apparatus can be partially or entirely implemented by software.

[0182] Optionally, the processing apparatus can include a memory and a processor, wherein the memory is configured to store a computer program, and the processor is configured to read and execute the computer program stored in the memory to perform the corresponding processing and / or steps in any one of the method embodiments.

[0183] Optionally, the processing apparatus can only include the processor. The memory for storing the computer program is located outside the processing apparatus, and the processor is connected with the memory through the circuit / wire to read and execute the computer program stored in the memory. The memory and the processor can be integrated together, or can be physically independent of each other.

[0184] Optionally, the processing apparatus can be one or more chips, or one or more integrated circuits. For example, the processing apparatus can be one or more field-programmable gate arrays (FPGA), application specific integrated circuits (ASIC), system on chips (SoC), central processor units (CPU), network processors (NP), digital signal processors (DSP), micro controller units (MCU), programmable logic devices (PLD) or other integrated chips, or any combination of the above chips or processors, etc.

[0185] Please refer to FIG. 9, which shows a communication apparatus 900 involved in the above embodiments provided by the embodiments of the present application. The communication apparatus 900 can be the communication apparatus as the terminal device in the above embodiments, and the communication apparatus in the example shown in FIG. 9 is implemented by the terminal device (or components in the terminal device).

[0186] Optionally, the communication apparatus 900 can include but is not limited to at least one processor 901 and a communication port 902.

[0187] Optionally, the transceiver unit 702 shown in FIG. 7 can be a communication interface, which can be the communication port 902 in FIG. 9. The communication port 902 can include an input interface and an output interface. Alternatively, the communication port 902 can also be a transceiver circuit, which can include an input interface circuit and an output interface circuit.

[0188] Further, the apparatus can further include at least one of a memory 903, and a bus 904. In embodiments of the present application, the at least one processor 901 is configured to control and process actions of the communication apparatus 900.

[0189] Further, the processor 901 can be a central processing unit, a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array, or other programmable logic device, transistor logic, hardware components, or any combination thereof. It can implement or execute various example logical blocks, modules, and circuits described in connection with the present disclosure. The processor can also be a combination of computing components, such as a combination of one or more microprocessors, a combination of a digital signal processor and a microprocessor, and so on. Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the above-described system, apparatus, and unit can refer to the corresponding processes in the foregoing method embodiments, which will not be described here.

[0190] It should be noted that the communication apparatus 900 shown in FIG. 9 can be specifically used to implement the steps implemented by the terminal device in the foregoing method embodiments, and achieve the corresponding technical effects of the terminal device. The specific implementation of the communication apparatus shown in FIG. 9 can refer to the description in the foregoing method embodiments, which will not be described here.

[0191] Please refer to FIG. 10, which is a structural schematic diagram of a communication apparatus 1000 involved in the foregoing embodiments provided by embodiments of the present application. The communication apparatus 1000 can be specifically the communication apparatus as the network device in the foregoing embodiments. The communication apparatus in the example shown in FIG. 10 is implemented by a network device (or a component in the network device), and the structure of the communication apparatus can refer to the structure shown in FIG. 10.

[0192] The communication apparatus 1000 includes at least one processor 1011 and at least one network interface 1014. Further, the communication apparatus can further include at least one memory 1012, at least one transceiver 1013, and one or more antennas 1015. The processor 1011, the memory 1012, the transceiver 1013, and the network interface 1014 are connected, for example, through a bus. In embodiments of the present application, the connection can include various interfaces, transmission lines, or buses, etc., which are not limited in the present embodiments. The antenna 1015 is connected to the transceiver 1013. The network interface 1014 is configured to enable the communication apparatus to communicate with other communication devices through a communication link. For example, the network interface 1014 can include a network interface between the communication apparatus and a core network device, such as an S1 interface. The network interface can include a network interface between the communication apparatus and other communication apparatuses (such as other network devices or core network devices), such as an X2 or Xn interface.

[0193] The transceiver unit 702 shown in FIG. 7 can be a communication interface, which can be the network interface 1014 in FIG. 10, and can include an input interface and an output interface. Alternatively, the network interface 1014 can also be a transceiver circuit, which can include an input interface circuit and an output interface circuit.

[0194] The processor 1011 is mainly configured to process communication protocols and communication data, and control the whole communication device, execute software programs, and process data of the software programs, for example, to support the communication device to perform actions described in the embodiments. The communication device can include a baseband processor and a central processor, the baseband processor is mainly configured to process communication protocols and communication data, and the central processor is mainly configured to control the whole terminal device, execute software programs, and process data of the software programs. The processor 1011 in FIG. 10 can integrate the functions of the baseband processor and the central processor, and those skilled in the art can understand that the baseband processor and the central processor can also be independent processors interconnected by a bus or the like. Those skilled in the art can understand that the terminal device can include multiple baseband processors to adapt to different network modes, and the terminal device can include multiple central processors to enhance the processing capability, and various components of the terminal device can be connected by various buses. The baseband processor can also be referred to as a baseband processing circuit or a baseband processing chip. The central processor can also be referred to as a central processing circuit or a central processing chip. The function of processing communication protocols and communication data can be built in the processor, or stored in the memory in the form of software programs, and the processor executes the software programs to realize the baseband processing function.

[0195] The memory is mainly configured to store software programs and data. The memory 1012 can exist independently and be connected with the processor 1011. Alternatively, the memory 1012 can be integrated with the processor 1011, for example, integrated in a chip. The memory 1012 can store program codes for executing the technical solutions of the embodiments of the present application, and the processor 1011 controls the execution. Various computer programs executed can also be regarded as a driver of the processor 1011.

[0196] FIG. 10 only shows one memory and one processor. In actual terminal devices, there can be multiple processors and multiple memories. The memory can also be referred to as a storage medium or a storage device, etc. The memory can be a storage element on the same chip as the processor, that is, an on-chip storage element, or an independent storage element, and the embodiments of the present application do not limit this.

[0197] The transceiver 1013 can be configured to support the receiving or transmitting of radio frequency signals between the communication device and a terminal. The transceiver 1013 can be connected to the antenna 1015. The transceiver 1013 includes a transmitter Tx and a receiver Rx. Specifically, the one or more antennas 1015 can receive radio frequency signals, the receiver Rx of the transceiver 1013 is configured to receive the radio frequency signals from the antenna and convert the radio frequency signals into digital baseband signals or digital intermediate frequency signals, and provide the digital baseband signals or digital intermediate frequency signals to the processor 1011 for further processing, such as demodulation processing and decoding processing, by the processor 1011. In addition, the transmitter Tx in the transceiver 1013 is also configured to receive modulated digital baseband signals or digital intermediate frequency signals from the processor 1011, and convert the modulated digital baseband signals or digital intermediate frequency signals into radio frequency signals, and transmit the radio frequency signals through the one or more antennas 1015. Specifically, the receiver Rx can selectively perform one or more levels of down-mixing processing and analog-to-digital conversion processing to obtain digital baseband signals or digital intermediate frequency signals, and the order of the down-mixing processing and the analog-to-digital conversion processing can be adjustable. The transmitter Tx can selectively perform one or more levels of up-mixing processing and digital-to-analog conversion processing to obtain radio frequency signals, and the order of the up-mixing processing and the digital-to-analog conversion processing can be adjustable. The digital baseband signals and the digital intermediate frequency signals can be collectively referred to as digital signals.

[0198] The transceiver 1013 can also be referred to as a transceiving unit, a transceiver, a transceiving device, etc. Optionally, the devices in the transceiving unit for implementing the receiving function can be regarded as a receiving unit, and the devices in the transceiving unit for implementing the transmitting function can be regarded as a transmitting unit, i.e., the transceiving unit includes the receiving unit and the transmitting unit, the receiving unit can also be referred to as a receiver, an input port, a receiving circuit, etc., and the transmitting unit can be referred to as a transmitter, a transmitter, or a transmitting circuit, etc.

[0199] It should be noted that the communication device 1000 shown in FIG. 10 can be specifically configured to implement the steps implemented by the network device in the foregoing method embodiments, and achieve the corresponding technical effects of the network device. The specific implementation mode of the communication device 1000 shown in FIG. 10 can be referred to the description in the foregoing method embodiments, which will not be described here one by one.

[0200] Please refer to FIG. 11, which is a structural schematic diagram of a communication device involved in the above embodiments provided by the embodiments of the present application.

[0201] It can be understood that the communication apparatus 110 includes, for example, modules, units, elements, circuits, or interfaces, and the like, which are properly configured together to perform the technical solutions provided in the present application. The communication apparatus 110 can be a terminal device or a network device as described above, or can be a component (for example, a chip) of the devices, to implement the methods described in the following method embodiments. The communication apparatus 110 includes one or more processors 111. The processor 111 can be a general purpose processor or a special purpose processor, etc. For example, it can be a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data, and the central processing unit can be used to control the communication apparatus (such as a RAN node, a terminal, or a chip, etc.), execute software programs, and process data of the software programs.

[0202] Optionally, in one design, the processor 111 can include a program 113 (which can also be referred to as code or instructions at times) that can be run on the processor 111, so that the communication apparatus 110 performs the methods described in the following embodiments. In yet another possible design, the communication apparatus 110 includes a circuit (not shown in FIG. 11).

[0203] Optionally, the communication apparatus 110 can include one or more memories 112 having a program 114 (which can also be referred to as code or instructions at times) stored thereon, which can be run on the processor 111, so that the communication apparatus 110 performs the methods described in the above method embodiments.

[0204] Optionally, the processor 111 and / or the memory 112 can include an AI module 117, 118, which is used to implement AI-related functions. The AI module can be implemented in software, hardware, or a combination of software and hardware. For example, the AI module can include a radio intelligence control (RIC) module. For example, the AI module can be a near-real-time RIC or a non-real-time RIC.

[0205] Optionally, the processor 111 and / or the memory 112 can also store data. The processor and the memory can be separately arranged or integrated together.

[0206] Optionally, the communication apparatus 110 can also include a transceiver 115 and / or an antenna 116. The processor 111 can also be referred to as a processing unit, which controls the communication apparatus (such as a RAN node or a terminal). The transceiver 115 can also be referred to as a transceiving unit, a transceiver, a transceiving circuit, or a transceiver, etc., which is used to realize the transceiving function of the communication apparatus through the antenna 116.

[0207] The processing unit 701 shown in FIG. 7 can be the processor 111. The transceiving unit 702 shown in FIG. 7 can be a communication interface, which can be the transceiver 115 in FIG. 11. The transceiver 115 can include an input interface and an output interface. Alternatively, the transceiver 115 can be a transceiving circuit, which can include an input interface circuit and an output interface circuit.

[0208] The embodiments of the present application further provide a computer readable storage medium for storing one or more computer-executable instructions, which, when executed by a processor, cause the processor to perform the method described in the possible implementation manners of the first communication device, the second communication device or the third communication device.

[0209] The embodiments of the present application further provide a computer program product (or computer program), which, when executed by a processor, causes the processor to perform the method described in the possible implementation manners of the first communication device, the second communication device or the third communication device.

[0210] The embodiments of the present application further provide a chip system, which includes at least one processor for supporting the communication device to implement the functions involved in the possible implementation manners of the communication device. Optionally, the chip system further includes an interface circuit for providing program instructions and / or data for the at least one processor. In a possible design, the chip system can further include a memory for storing necessary program instructions and data of the communication device. The chip system can be composed of a chip, or can include a chip and other discrete devices. The communication device can be the first communication device, the second communication device or the third communication device in the method embodiments.

[0211] The embodiments of the present application further provide a communication system, which includes the first communication device and the second communication device in any of the embodiments, or the first communication device and the third communication device in any of the embodiments.

[0212] In the several embodiments of the present application, it should be understood that the disclosed system, device, and method can be implemented in other manners. For example, the described device embodiments are merely schematic. For example, the division of the units is only a logical function division. There can be another division manner for the actual implementation, for example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed mutual couplings or direct couplings or communication connections between the units can be indirect couplings or communication connections through some interfaces, devices, or units, and can be electrical, mechanical, or in other forms.

[0213] The units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed on multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiment scheme.

[0214] In addition, each functional unit in each embodiment of the present application can be integrated in one processing unit, or each unit can exist physically, or two or more units can be integrated in one unit. The integrated unit can be realized in the form of hardware or in the form of a software functional unit. When the integrated unit is realized in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on this understanding, the technical solutions of the present application essentially or say the part that contributes or the whole or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk or an optical disk, and various storage program codes.

Claims

1. A communication method characterized by comprising: The method comprises: receiving a first signal; processing the first signal based on a first signal processing mode corresponding to a first parameter to obtain a second signal, wherein the first parameter indicates a transmission characteristic of the first signal, the first signal processing mode is determined based on the first parameter and a first mapping relationship, the first mapping relationship is used to indicate a mapping relationship between N parameters and M signal processing modes, N and M are positive integers; the N parameters include the first parameter, and the M signal processing modes include the first signal processing mode; any signal processing mode in the M signal processing modes is used to indicate a quantization bit width and / or compression information; sending the second signal.

2. The method of claim 1, wherein, The method further comprises: receiving first information, wherein the first information is used to indicate the first mapping relationship.

3. The method of claim 1, wherein, The first mapping relationship is determined based on second information, wherein the second information is used to indicate system capacity and / or signal quality information.

4. The method according to claim 2 or 3, characterized in that, The first mapping relationship is one of K mapping relationships, and K is a positive integer. The method further comprises: receiving third information, wherein the third information is used to indicate the K mapping relationships.

5. The method according to any one of claims 1 to 4, characterized in that, Any parameter in the N parameters is used to indicate at least one of the following: a modulation and coding scheme (MCS), a number of layers, or signal quality information.

6. The method according to any one of claims 1 to 5, characterized in that, Any signal processing mode in the M signal processing modes is used to indicate a quantization bit width and / or compression information.

7. The method according to any one of claims 1 to 6, characterized in that, The method is applied to a radio unit (RU) or a distributed unit (DU).

8. A communication method characterized by comprising: The method comprises: determining third information, wherein the third information is used to indicate K mapping relationships, and K is a positive integer; each mapping relationship in the K mapping relationships is used to indicate a mapping relationship between one or more parameters and one or more signal processing modes; the one or more signal processing modes are used to process a signal between a first communication device and a second communication device; any signal processing mode in the one or more signal processing modes is used to indicate a quantization bit width and / or compression information; sending the third information.

9. The method of claim 8, wherein, Any parameter in the N parameters is used to indicate at least one of the following: a modulation and coding scheme (MCS), a number of layers, or signal quality information.

10. The method according to claim 8 or 9, characterized in that, Any signal processing mode in the M signal processing modes is used to indicate a quantization bit width and / or compression information.

11. The method according to any one of claims 8 to 10, characterized in that, The method is applied to a centralized unit (CU).

12. A communications device, characterized by The apparatus comprises a module for performing the method according to any one of claims 1 to 11.

13. A communications device, characterized by The apparatus comprises at least one processor configured to perform the method according to any one of claims 1 to 11.

14. The communication apparatus according to claim 13, wherein The communication device is a chip or a chip system.

15. A computer-readable storage medium, characterized in that, The computer readable storage medium stores a computer program or instructions, which, when executed by the communication device, implement the method according to any one of claims 1 to 11.

16. A computer program product, characterised in that, The computer program or instructions, when executed by a computer, implement the method according to any one of claims 1 to 11.

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