Communication method and communication device

Abstract

The invention provides a communication method and a communication device, which can improve communication performance and can be applied to a communication system. The method comprises the following steps: sending first information, wherein the first information is used for determining N second transmission layers in M first transmission layers; second information is received from a second communication device. The second information comprises data of the K transmission layers, and the second information is obtained by the second communication device according to target power corresponding to the K transmission layers and at least one airspace vector associated with the K transmission layers. Each transmission layer corresponds to one first power difference, and the first power difference corresponding to each transmission layer is the power difference between the target power corresponding to each transmission layer and the first power corresponding to each transmission layer; the sum of the first power differences corresponding to the N second transmission layers is smaller than or equal to the sum of the first power differences corresponding to the Q third transmission layers.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to a communication method and communication device. Background Technology

[0002] In mobile communication systems, two communicating devices can transmit data across multiple transport layers, and the power of these devices is distributed among these layers. Current technology's method of distributing power across multiple transport layers leads to low communication performance. Therefore, improving communication performance is a pressing technical problem that needs to be solved. Summary of the Invention

[0003] This application provides a communication method and a communication device that can improve communication performance.

[0004] To achieve the above objectives, this application adopts the following technical solution:

[0005] A first aspect provides a communication method. The communication method includes: a first communication device transmitting first information, the first information used to determine N second transmission layers out of M first transmission layers. The first communication device receives second information from a second communication device. The second information includes data from K transmission layers, the second information being obtained by the second communication device based on the target power corresponding to each of the K transmission layers and at least one spatial vector associated with the K transmission layers. Each of the K transmission layers corresponds to a first power and a second power. Any two transmission layers in the K transmission layers have the same first power, and the second power corresponding to each transmission layer is the power corresponding to each transmission layer when the second communication device does not support power boosting. The K transmission layers include M first transmission layers and Q third transmission layers. The second power corresponding to each of the M first transmission layers is equal to the first power corresponding to each of the first transmission layers, and the second power corresponding to each of the Q third transmission layers is less than the first power corresponding to each of the third transmission layers. The target power corresponding to each third transmission layer is less than or equal to the second power corresponding to each of the third transmission layers, and the target power corresponding to each of the N second transmission layers is greater than the first power corresponding to each of the second transmission layers. Each transmission layer corresponds to a first power difference, which is the power difference between the target power and the first power of each transmission layer. The sum of the first power differences of N second transmission layers is less than or equal to the sum of the first power differences of Q third transmission layers. M, K, Q, and N are integers, K is greater than 1, M, Q, and N are greater than or equal to 1, M ≤ K, and Q ≤ K.

[0006] Based on the communication method provided in the first aspect, the first communication device can send first information to identify N second transmission layers out of M first transmission layers and receive data on the N transmission layers, as described above. The second information is sent by the second communication device, when supporting power boosting, by allocating the power margin (e.g., the sum of the first power differences corresponding to the Q third transmission layers) of transmission layers with existing power margins to other transmission layers that can support power boosting (e.g., the aforementioned second transmission layers). This allows for the allocation of power margins on the transmission layers indicated by the first communication device. For example, the power margins can be allocated to transmission layers with better channel quality or associated spatial vector transmission conditions among the K transmission layers, thereby improving communication performance.

[0007] As an example, the first communication device may be a terminal device, a communication module, a circuit or chip responsible for communication functions, a chip system, or other components or parts. This communication module, circuit or chip responsible for communication functions, chip system, or other components or parts may be used in the terminal device.

[0008] In one possible implementation, the target power corresponding to each of the N second transport layers is less than or equal to the third power corresponding to each second transport layer. The third power corresponding to the nth second transport layer among the N second transport layers is determined based on the first power corresponding to the nth second transport layer, the number of K transport layers, the first scaling factor of the spatial vector associated with the nth second transport layer, and the number of transport layers among the K transport layers that correspond to the same spatial vector as the nth second transport layer.

[0009] In one possible implementation, the first information includes the indices of the spatial vectors corresponding to each of the N second transport layers. Thus, by indicating the N second transport layers using the indices of the spatial vectors, overhead can be reduced.

[0010] In one possible implementation, the target power for each of the N second transport layers is related to the priority of each second transport layer. Thus, the target power can be determined based on priority; for example, power margins can be preferentially allocated to second transport layers with higher priority.

[0011] In one possible implementation, the priority of each second transport layer corresponds to the index of the spatial vector corresponding to each second transport layer in the order of the first information. Since the first communication device measures the channel state information, it can report the spatial vector with better transmission conditions. This allows the second communication device to determine the transport layer with the highest remaining power allocation based on the index of the spatial vector corresponding to each second transport layer reported by the first communication device. This improves the performance of the communication system when the first communication device reports the spatial vector with better transmission conditions.

[0012] In one possible implementation, the method provided by the first aspect may further include: the first communication device sending fourth information. The fourth information indicates the priority of each of the N second transmission layers. Since the first communication device measures channel state information, it determines and reports the priority of each transmission layer based on the spatial vector indicating better transmission conditions. This allows the second communication device to allocate power margin according to the priority of each second transmission layer reported by the first communication device. It can prioritize allocating power margin on transmission layers associated with the spatial vector indicating better transmission conditions reported by the first communication device. The index of the spatial vector determines the transmission layer where the remaining power is preferentially allocated, thereby improving the performance of the communication system.

[0013] In one possible implementation, the method provided by the first aspect may further include: the first communication device transmitting third information. The third information is used to indicate a first power boosting factor corresponding to each of the N second transmission layers, and the first power boosting factor corresponding to each second transmission layer is used to determine the target power corresponding to each second transmission layer. Since the first communication device can measure channel state information, it can determine the power boosting factor of each transmission layer based on the channel state information. For example, the power boosting factor of each transmission layer can be determined based on the transmission conditions of the spatial vector, and the specific power boosting factor of the transmission layer performing power boosting can be reported, thereby improving the utilization rate of communication resources and thus improving system performance.

[0014] Secondly, a communication method is provided. The communication method includes: a second communication device receiving first information, the first information used to determine N second transmission layers out of M first transmission layers. The second communication device transmits second information based on the target power corresponding to each of the K transmission layers and at least one spatial vector associated with the K transmission layers. The second information includes data from the K transmission layers, each of the K transmission layers corresponding to a first power and a second power. Any two transmission layers in the K transmission layers have the same first power, and the second power corresponding to each transmission layer is the power corresponding to each transmission layer when the second communication device does not support power boosting. The K transmission layers include M first transmission layers and Q third transmission layers, where the second power corresponding to each of the M first transmission layers is equal to the first power corresponding to each of the first transmission layers, and the second power corresponding to each of the Q third transmission layers is less than the first power corresponding to each of the third transmission layers. The target power corresponding to each third transmission layer is less than or equal to the second power corresponding to each of the third transmission layers, and the target power corresponding to each of the N second transmission layers is greater than the first power corresponding to each of the second transmission layers. Each transmission layer corresponds to a first power difference, which is the power difference between the target power and the first power of each transmission layer. The sum of the first power differences of N second transmission layers is less than or equal to the sum of the first power differences of Q third transmission layers. M, K, Q, and N are integers, K is greater than 1, M, Q, and N are greater than or equal to 1, M ≤ K, and Q ≤ K.

[0015] Based on the method provided in the second aspect, the second communication device can receive first information to determine N second transmission layers out of M first transmission layers, and send data on the N transmission layers, as described above. The second information is that, when supporting power boosting, the second communication device allocates the power margin of transmission layers with existing power margins (such as the sum of the first power differences corresponding to the Q third transmission layers) to other transmission layers that can support power boosting (such as the aforementioned second transmission layers). In this way, power margins can be allocated to the transmission layers indicated by the first communication device. For example, the power margins can be allocated to transmission layers with better channel quality or better spatial vector transmission conditions among the K transmission layers, thereby improving communication performance.

[0016] As an example, the second communication device may be a network device, a communication module, a circuit or chip responsible for communication functions, a chip system, or other components or parts. This communication module, circuit or chip responsible for communication functions, chip system, or other components or parts may be used in a network device.

[0017] In one possible implementation, the target power corresponding to each of the N second transport layers is less than or equal to the third power corresponding to each second transport layer. The third power corresponding to the nth second transport layer among the N second transport layers is determined based on the first power corresponding to the nth second transport layer, the number of K transport layers, the first scaling factor of the spatial vector associated with the nth second transport layer, and the number of transport layers among the K transport layers that correspond to the same spatial vector as the nth second transport layer.

[0018] In one possible implementation, the first information includes the indices of N spatial vectors corresponding to the second transport layer.

[0019] In one possible implementation, the target power of each of the N second transmission layers is related to the priority of each second transmission layer.

[0020] In one possible implementation, the priority of each second transport layer corresponds to the order of the indices of the spatial vectors corresponding to each second transport layer in the first information.

[0021] In one possible implementation, the method provided by the second aspect may further include: the second communication device receiving fourth information. The fourth information is used to indicate the priority of each of the N second transport layers.

[0022] In one possible implementation, the second aspect may further include: the second communication device receiving third information. The third information is used to indicate a first power boost factor corresponding to each of the N second transmission layers, and the first power boost factor corresponding to each second transmission layer is used to determine the target power corresponding to each second transmission layer.

[0023] Combining the methods of the first and second aspects, the first power boosting factor corresponding to each second transport layer is one of multiple candidate power boosting factors. This allows for the selection of the first power boosting factor corresponding to each second transport layer from multiple candidate power boosting factors, reducing computational complexity and thus improving communication efficiency.

[0024] In one possible implementation, the third information includes a first difference between the first power boost factor corresponding to the nth second transport layer out of N second transport layers and the first scaling factor corresponding to the nth second transport layer. Thus, by reporting the first difference corresponding to each of the N second transport layers, reporting the first power boost factor can be avoided, reducing the amount of data transmitted, thereby reducing resource overhead and improving communication efficiency.

[0025] In one possible implementation, each of the N second transport layers corresponds to a first parameter. The first parameter corresponding to the nth second transport layer is determined based on the second parameter and the first difference between the nth second transport layer and the first parameter corresponding to the nth second transport layer. The first difference is the difference between the first power boost factor and the first scaling factor corresponding to the nth second transport layer. The first parameter is an integer, and the second parameter is a constant. The number of bits occupied by the first parameter corresponding to the nth second transport layer is less than the number of bits occupied by the scaling factor corresponding to the nth second transport layer. The first information includes the first parameter corresponding to each of the N second transport layers. In other words, the scaling factors corresponding to the N transport layers can be mapped to numbers occupying fewer bits, thereby reducing the amount of data transmitted, reducing resource overhead, and improving communication efficiency.

[0026] In one possible implementation, there is a correspondence between the scaling factor of the transport layer and its binary value. The third information includes the binary value corresponding to the first power boost factor of each of the N second transport layers. Thus, the first power boost factor of each second transport layer can be indicated by reporting the binary value corresponding to its first power boost factor. Directly indicating the first power boost factor with binary values ​​allows for a more accurate and optimal power allocation method that is not limited by the protocol's predefined range, thereby improving the performance of the communication system.

[0027] Furthermore, the technical effects of the reference signal power adjustment method described in the second aspect can be referred to the technical effects of the reference signal power adjustment method described in the first aspect, and will not be repeated here.

[0028] Thirdly, a communication device is provided. This communication device is used to execute the power adjustment method for a reference signal as described in any one of the implementations of the first to second aspects.

[0029] In this application, the communication device described in the third aspect can be a terminal device, a communication module, a circuit with communication function, a chip, a chip system, or other components or assemblies. The communication module, the circuit with communication function, the chip, the chip system, or other components or assemblies can be applied in the terminal device. Alternatively, the communication device can be a network device (such as a radio access network (RAN) node), a communication module, a circuit with communication function, a chip, a chip system, or other components or assemblies. The communication module, the circuit with communication function, the chip, the chip system, or other components or assemblies can be applied in the network device.

[0030] It should be understood that the communication apparatus described in the third aspect includes modules, units, or means corresponding to the power adjustment method for the reference signal described in any of the first to second aspects. These modules, units, or means can be implemented in hardware, software, or by hardware executing corresponding software. The hardware or software includes one or more modules or units for performing the functions involved in the power adjustment method for the reference signal described above.

[0031] Fourthly, a communication device is provided. The communication device includes a processor configured to execute a power adjustment method for a reference signal as described in any of the possible implementations of the first to second aspects.

[0032] In one possible implementation, the communication device described in the fourth aspect may further include a transceiver. The transceiver may be a transceiver circuit or an interface circuit. The transceiver can be used for communication between the communication device described in the fourth aspect and other communication devices.

[0033] In one possible implementation, the communication device described in the fourth aspect may further include a memory. This memory may be integrated with the processor or disposed separately. The memory may be used to store computer programs (or code instructions or program instructions) and / or data related to the power adjustment method for the reference signal described in any of the first or second aspects.

[0034] In this application, the communication device described in the fourth aspect can be a terminal device, a communication module, a circuit with communication function, a chip, a chip system, or other components or assemblies. The communication module, the circuit with communication function, the chip, the chip system, or other components or assemblies can be applied in a terminal device. Alternatively, the communication device can be a network device, a communication module, a circuit with communication function, a chip, a chip system, or other components or assemblies. The communication module, the circuit with communication function, the chip, the chip system, or other components or assemblies can be applied in a network device.

[0035] Fifthly, a communication device is provided. The communication device includes a processor coupled to a memory, the processor executing a computer program stored in the memory to cause the communication device to perform a power adjustment method for a reference signal as described in any possible implementation of the first to second aspects.

[0036] In one possible implementation, the communication device described in the fifth aspect may further include a transceiver. The transceiver may be a transceiver circuit or an interface circuit. The transceiver can be used for communication between the communication device described in the fifth aspect and other communication devices.

[0037] In this application, the communication device described in the fifth aspect can be a terminal device, a communication module, a circuit with communication function, a chip, a chip system, or other components or assemblies. The communication module, the circuit with communication function, the chip, the chip system, or other components or assemblies can be applied in a terminal device. Alternatively, the communication device can be a network device, a communication module, a circuit with communication function, a chip, a chip system, or other components or assemblies. The communication module, the circuit with communication function, the chip, the chip system, or other components or assemblies can be applied in a network device.

[0038] A sixth aspect provides a communication device, comprising: a processor and a memory; the memory being used to store a computer program, which, when executed by the processor, causes the communication device to perform a power adjustment method for a reference signal as described in any one of the first to second aspects.

[0039] In one possible implementation, the communication device described in the sixth aspect may further include a transceiver. The transceiver may be a transceiver circuit or an interface circuit. The transceiver can be used for communication between the communication device described in the sixth aspect and other communication devices.

[0040] In this application, the communication device described in the sixth aspect can be a terminal device, a communication module, a circuit with communication function, a chip, a chip system, or other components or assemblies. The communication module, the circuit with communication function, the chip, the chip system, or other components or assemblies can be applied in a terminal device. Alternatively, the communication device can be a network device, a communication module, a circuit with communication function, a chip, a chip system, or other components or assemblies. The communication module, the circuit with communication function, the chip, the chip system, or other components or assemblies can be applied in a network device.

[0041] A seventh aspect provides a communication device comprising: a processor; the processor being configured to be coupled to a memory, and after reading a computer program from the memory, to execute a power adjustment method for a reference signal as described in any one of the implementations of the first to second aspects, according to the computer program.

[0042] In one possible implementation, the communication device described in the seventh aspect may further include a transceiver. The transceiver may be a transceiver circuit or an interface circuit. The transceiver can be used for communication between the communication device described in the seventh aspect and other communication devices.

[0043] In this application, the communication device described in the seventh aspect can be a terminal device, a communication module, a circuit with communication function, a chip, a chip system, or other components or assemblies. The communication module, or the circuit, chip, chip system, or other components or assemblies with communication function can be applied in the terminal device. Alternatively, the communication device can be a network device (such as a radio access network (RAN) node), a communication module, a circuit, chip, chip system, or other components or assemblies with communication function. The communication module, the circuit, chip, chip system, or other components or assemblies with communication function can be applied in the network device.

[0044] Eighthly, a communication system is provided. The communication system includes one or more terminal devices and one or more network devices.

[0045] A ninth aspect provides a computer-readable storage medium comprising: a computer program or instructions; which, when executed on a computer, causes the computer to perform a power adjustment method for a reference signal as described in any possible implementation of the first to second aspects.

[0046] In a tenth aspect, a computer program product is provided, comprising a computer program or instructions that, when executed on a computer, cause the computer to perform the power adjustment method for a reference signal as described in any possible implementation of the first to second aspects.

[0047] Furthermore, the technical effects of the third to tenth aspects mentioned above can be referred to the technical effects of the power adjustment method for the reference signal described in the first to second aspects, and will not be repeated here. Attached Figure Description

[0048] Figure 1 This is a schematic diagram of the architecture of the communication system provided in the embodiments of this application;

[0049] Figure 2 This is a schematic diagram of terminal device interaction provided in an embodiment of this application;

[0050] Figure 3 This is a schematic diagram illustrating the number of antenna ports and oversampling factor in different dimensions.

[0051] Figure 4 This is a schematic diagram illustrating the selection of a spatial vector (beam).

[0052] Figure 5 This is a schematic diagram of a communication process;

[0053] Figure 6 A flowchart illustrating the communication method provided in an embodiment of this application;

[0054] Figure 7 Schematic diagram of the communication device provided in the embodiments of this application Figure 1 ;

[0055] Figure 8 Schematic diagram of the communication device provided in the embodiments of this application Figure 2 . Detailed Implementation

[0056] The technical solutions of this application embodiment can be applied to various communication systems, such as wireless fidelity (WiFi) systems, vehicle-to-everything (V2X) communication systems, device-to-device (D2D) communication systems, vehicle-to-everything (V2X) communication systems, 4th generation (4G) mobile communication systems, such as long term evolution (LTE) systems, 5th generation (5G) mobile communication systems, such as new radio (NR) systems, and future communication systems, etc.

[0057] This application will present various aspects, embodiments, or features relating to systems that may include multiple devices, components, modules, etc. It should be understood and appreciated that individual systems may include additional devices, components, modules, etc., and / or may not include all the devices, components, modules, etc. discussed in conjunction with the accompanying drawings. Furthermore, combinations of these approaches are also possible.

[0058] Furthermore, in the embodiments of this application, words such as "exemplarily" and "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as an "example" in this application should not be construed as being better or more advantageous than other embodiments or designs. Rather, the use of the word "example" is intended to present the concept in a specific manner.

[0059] First, in this application, "for indicating" can include both direct and indirect indication. When describing "information" for indicating A, it can include whether the information directly indicates A or indirectly indicates A, but does not necessarily mean that the information carries A.

[0060] The information indicated by a given piece of information is called the information to be indicated. In the specific implementation process, there are many ways to indicate the information to be indicated, such as, but not limited to, directly indicating the information to be indicated, such as the information to be indicated itself or its index. It can also be indirectly indicated by indicating other information, where there is a relationship between the other information and the information to be indicated. It can also indicate only a part of the information to be indicated, while the other parts are known or pre-agreed upon. For example, the indication of specific information can be achieved by using a pre-agreed (e.g., protocol-defined) arrangement of various pieces of information, thereby reducing the indication overhead to some extent. At the same time, common parts of various pieces of information can be identified and indicated uniformly to reduce the indication overhead caused by individually indicating the same information.

[0061] Furthermore, the specific indication method can also be any existing indication method, such as, but not limited to, the above-mentioned indication methods and their various combinations. Specific details of various indication methods can be found in existing technologies, and will not be repeated here. As described above, for example, when multiple pieces of information of the same type need to be indicated, the indication methods for different pieces of information may differ. In the specific implementation process, the required indication method can be selected according to specific needs. This application embodiment does not limit the selected indication method; therefore, the indication methods involved in this application embodiment should be understood to cover various methods that enable the party to be indicated to obtain the information to be indicated.

[0062] The information to be instructed can be sent as a whole or divided into multiple sub-information messages, and the sending period and / or timing of these sub-information messages can be the same or different. This application does not limit the specific sending method. The sending period and / or timing of these sub-information messages can be predefined, for example, according to a protocol, or configured by the transmitting device by sending configuration information to the receiving device. This configuration information can include, for example, but not limited to, one or a combination of at least two of radio resource control (RRC) signaling, medium access control (MAC) layer signaling, and physical layer signaling. MAC layer signaling includes, for example, a MAC control element (CE); physical (PHY) layer signaling includes, for example, downlink control information (DCI).

[0063] Second, in the embodiments shown below, the first, second, and various numerical designations are merely distinctions for descriptive convenience and are not intended to limit the scope of the embodiments of this application. For example, to distinguish different indication information.

[0064] Third, "pre-defined," "pre-configured," or "pre-specified" can be achieved by pre-saving corresponding codes, tables, or other means of indicating relevant information in the device (e.g., including terminal devices and network devices), or by pre-defining them in a protocol. This application does not limit the specific implementation method. "Saving" can refer to saving in one or more memories. These memories can be separate installations or integrated into the encoder, decoder, processor, or communication device. Alternatively, some memories can be separately installed, while others are integrated into the decoder, processor, or communication device. The type of memory can be any form of storage medium, and this application does not limit this.

[0065] Fourth, the “protocol” involved in the embodiments of this application may refer to standard protocols in the field of communication, such as 3GPP’s LTE protocols (such as technical specification (TS) 36, i.e., the TS36 series of technical specifications), NR protocols (such as the TS38 series of technical specifications), and related protocols applied to future communication systems. This application does not limit this.

[0066] The network architecture and business scenarios described in the embodiments of this application are for the purpose of more clearly illustrating the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided in the embodiments of this application. As those skilled in the art will know, with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.

[0067] The network architecture and business scenarios described in the embodiments of this application are for the purpose of more clearly illustrating the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided in the embodiments of this application. As those skilled in the art will know, with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.

[0068] To facilitate understanding of the embodiments of this application, let's first take... Figure 1 The communication system illustrated herein is used as an example to illustrate a communication system applicable to embodiments of this application. For example, Figure 1 This is a schematic diagram of the architecture of a communication system to which the method provided in the embodiments of this application applies. For example... Figure 1 As shown, the communication system includes network equipment and terminal equipment.

[0069] like Figure 1As shown, the communication system includes at least one network device (such as network device 110a and network device 110b) and at least one terminal device (such as terminal devices 120a to 120j).

[0070] Terminal devices can connect to network devices wirelessly, and network devices can connect to the core network via wired or wireless means. Figure 1 (Not shown in the image) connected.

[0071] Among them, network devices and terminal devices can exchange information.

[0072] Terminal equipment can be a terminal with transceiver capabilities. This terminal equipment can also be referred to as user equipment (UE), access terminal, subscriber unit, user station, mobile station (MS), mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication equipment, user agent, or user apparatus. The terminal devices in the embodiments of this application may be mobile phones, cellular phones, smartphones, tablets, wireless data cards, personal digital assistants (PDAs), wireless modems, handsets, laptop computers, machine-type communication (MTC) terminals, computers with wireless transceiver capabilities, virtual reality (VR) terminals, augmented reality (AR) terminals, smart home devices (e.g., refrigerators, televisions, air conditioners, electricity meters, etc.), intelligent robots, robotic arms, workshop equipment, wireless terminals in autonomous driving, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in telemedicine, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, vehicle-mounted terminals, and roadside units with terminal functions. The terminal device in this application can also be an onboard module, onboard unit, onboard component, onboard chip, or onboard unit, which is built into a vehicle as one or more components or units. The terminal device can also be other devices with terminal functions; for example, it can be a device that performs terminal functions in D2D communication. The embodiments of this application do not limit the device form of the terminal device. The device used to implement the function of the terminal device can be the terminal device itself; it can also be a device that supports the terminal device in implementing the function, such as a communication module, chip, chip system, other components or parts, or circuits or functional components. This device can be installed in the terminal device or used in conjunction with the terminal device. The chip system can be composed of chips or include chips and other discrete devices.Among them, the various forms of terminal devices mentioned above can also be referred to as terminal-side devices.

[0073] In this application embodiment, the network device can be a device with wireless transceiver capabilities. For example, the network device can be a device located in the access network (AN) of a communication system, which can be used to provide access services for terminals. In one possible scenario, the network device can be a radio access network (RAN) device, such as a base station, an evolved NodeB (eNodeB), an access point (AP), a transmission and reception point (TRP), or a base station in a future communication system. In future mobile communication systems, the network device may also have other naming conventions, all of which are covered within the protection scope of this application embodiment, and this application does not impose any limitations on them. Alternatively, the network device may also include 5G, such as a gNB in ​​an NR system, or one or a group (including multiple antenna panels) of an antenna panel of a 5G base station, or it may also be a network node constituting a gNB, a transmission and reception point (TRP or transmission point (TP)) or a transmission measurement function (TMF). Alternatively, the network device may be a macro base station (such as... Figure 1 110a), micro base stations or indoor stations (such as Figure 1 The network device can be a relay node or donor node (as described in section 110b), or a wireless controller in a cloud radio access network (CRAN) scenario. Optionally, the network device can also be a server, wearable device, vehicle, or in-vehicle equipment. For example, the access network device in V2X technology can be a roadside unit (RSU). All or part of the functions of the network device in this application can also be implemented through software functions running on hardware, or through virtualization functions instantiated on a platform (e.g., a cloud platform). The network device in this application can also be a logical node, logical module, or software capable of implementing all or part of the network device functions.

[0074] In another possible scenario, multiple network devices collaborate to assist terminal devices in achieving wireless access, with each network device performing a portion of the base station's functions. For example, network devices can be central units (CUs), distributed units (DUs), CU-control plane (CPs), CU-user plane (UPs), or radio units (RUs), etc. CUs and DUs can be configured separately or included in the same network element, such as a baseband unit (BBU). RUs can be included in radio equipment or radio units, such as remote radio units (RRUs), active antenna units (AAUs), or remote radio heads (RRHs).

[0075] In different systems, CU (or centralized unit control plane (CU-CP)) and centralized unit user plane (CU-UP)), DU, or RU may have different names, but those skilled in the art will understand their meaning. For example, in an open radioaccess network (O-RAN or ORAN) system, CU can also be called an open centralized unit (O-CU) (open CU), DU can also be called an open distributed unit (O-DU), CU-CP can also be called an open centralized unit control plane (O-CU-CP), CU-UP can also be called an open centralized unit user plane (O-CU-UP), and RU can also be called an open radio unit (O-RU). For ease of description, this application uses CU, CU-CP, CU-UP, DU, and RU as examples. Any of the CU (or CU-CP, CU-UP), DU and RU units in this application can be implemented through a software module, a hardware module, or a combination of software and hardware modules.

[0076] In this embodiment, the form of the network device is not limited. The device used to implement the function of the network device can be the network device itself; it can also be any device that supports the network device in implementing that function, such as a communication module, chip, chip system, other components or parts, or circuits or functional components. This device can be installed in the network device or used in conjunction with the network device. The chip system can be composed of chips or can include chips and other discrete devices. The network devices of the various forms described above can also be referred to as network-side devices.

[0077] It should be understood that Figure 1 This is a simplified diagram for ease of understanding only. The communication system may also include other network devices and / or other terminal devices. Figure 1 It was not drawn in the middle.

[0078] like Figure 2 As shown, the network device includes an RRC signaling interaction module ( Figure 2 RRC and MAC signaling interaction modules (in the middle) Figure 2 The MAC and PHY signaling and data interaction modules are located in the MAC and PHY modules. Figure 2 The terminal equipment includes an RRC signaling interaction module, a MAC signaling interaction module, and a PHY signaling and data interaction module.

[0079] Network devices and terminal devices can exchange RRC signaling via the RRC signaling interaction module. They can also exchange Media Access Control-Control Element (MAC-CE) signaling via the MAC signaling interaction module. Finally, they can exchange one or more of the following via the PHY interaction module: uplink control signaling, downlink control signaling (such as DCI), uplink data, or downlink data.

[0080] The technical terms and related technical solutions in this application will be described below with reference to the accompanying drawings.

[0081] In communication systems employing Massive Multiple Input Multiple Output (MIMO) technology, MIMO antenna arrays can form beams in different directions, i.e., different beams. Different beams correspond to different spatial vectors, and a beam can be distinguished or represented by its corresponding spatial vector. The set of spatial vectors corresponding to beams in different directions within the MIMO antenna array can be understood as the set of spatial vectors corresponding to the MIMO antenna array. The number of spatial vectors in the set of spatial vectors corresponding to the MIMO antenna array is related to the following parameters: the number of antenna ports N1 corresponding to a polarization direction in the first dimension (N1 is the number of antenna ports corresponding to a polarization direction in the first dimension), the number of antenna ports N2 corresponding to a polarization direction in the second dimension (N2 is the number of antenna ports corresponding to a polarization direction in the second dimension), the oversampling factor O1 in the first dimension, or the oversampling factor O2 in the second dimension. Here, N1, N2, O1, and O2 are all positive integers. The first and second dimensions are two different dimensions. In this embodiment, dimension can also be called direction, referring to the orientation of the antenna elements in the antenna array. The first dimension can also be called the first direction, and the second dimension can also be called the second direction. Optionally, the first dimension and the second dimension can be perpendicular to each other. For example, the first dimension can be a horizontal dimension, and the second dimension can be a vertical dimension. Alternatively, the first dimension can be a vertical dimension, and the second dimension can be a horizontal dimension.

[0082] As an example, the number E of spatial vectors in the spatial vector set corresponding to a MIMO antenna array can satisfy the relationship shown in the following formula (1):

[0083] E = N1O1 * N2O2; (1)

[0084] In the aforementioned E spatial vectors, a combination of a first-dimensional spatial vector and a second-dimensional spatial vector corresponds to a single spatial vector. That is, each spatial vector is associated with the antenna port in the first dimension, the antenna port in the second dimension, the oversampling factor in the first dimension, and the oversampling factor in the second dimension. Among the E spatial vectors, different spatial vectors corresponding to the same oversampling factor in the first dimension and the same oversampling factor in the second dimension are orthogonal to each other. In the above formula (1), N1O1 represents the number of spatial vectors in the first dimension; N2O2 represents the number of spatial vectors in the second dimension.

[0085] Among them, the oversampling factor o1 in the first dimension satisfies the following relationship: 0 ≤ o1 < O1, and o1 is an integer; the oversampling factor o2 in the second dimension satisfies the following relationship: 0 ≤ o2 < O2, and o2 is an integer. The index n1 of the antenna port in the first dimension satisfies the following relationship: 0 ≤ n1 < N1, and n1 is an integer; the index n2 of the antenna port in the second dimension satisfies the following relationship: 0 ≤ n2 < N2, and n2 is an integer. When O1 and O2 are 1, the number E of spatial domain vectors in the spatial domain vector set corresponding to the MIMO antenna array can satisfy the relationship shown in the following formula (2):

[0086] E = N1 * N2; (2)

[0087] Different combinations of o1, o2, n1, and n2 correspond to different spatial domain vectors in the spatial domain vector set. In the following description, the interpretation of the spatial domain vector set is all referred to as shown here and will not be elaborated.

[0088] The following takes N1 = 4, N2 = 2, O1 = 4, and O2 = 4 corresponding to the antenna array as an example to illustrate the spatial domain vector set. In this case, as Figure 3 shown, the number of antenna ports in the first dimension is N1O1 = 4 * 4 = 16, the number of antenna ports in the second dimension is N2O2 = 2 * 4 = 8, and the number E of spatial domain vectors in the spatial domain vector set corresponding to this antenna array is E = N1O1 * N2O2 = 16 * 8 = 128.

[0089] Type I codebook

[0090] In the fifth-generation communication system, the Type I codebook adopts a two-level codebook structure, where the codebook satisfies the relationship shown in the following formula (3).

[0091] W = W1 * W2; (3)

[0092] W is a precoding matrix, which can be used to precode the information to be transmitted; W1 is a broadband precoding matrix, which can be used to indicate selecting a group of spatial domain vectors from the above E spatial domain vectors; W2 is a sub-band precoding matrix, which is used to indicate the phase difference between two polarization directions to achieve phase adjustment between different polarization directions. In addition, W2 can also be used to indicate further selecting spatial domain vectors from the group of spatial domain vectors.

[0093] As Figure 4 shown, for example, if the spatial domain vector set includes spatial domain vectors 0 to spatial domain vector 7 (corresponding to beam 0 to beam 7 in sequence), then through W1, spatial domain vectors 2 to spatial domain vector 5 (beam 2 to beam 5) can be determined from spatial domain vectors 0 to spatial domain vector 7, and according to W2, spatial domain vector 4 (beam 4) can be further determined from spatial domain vectors 2 to spatial domain vector 5.

[0094] It should be understood that the oversampling factor involved in the embodiments of this application may refer to the Discrete Fourier Transform (DFT) oversampling factor.

[0095] In a communication system, the data transmitter can precode the data based on at least one spatial vector (i.e., one or more spatial vectors) selected by the data receiver from a set of spatial vectors, and then transmit the precoded data. To reduce the impact of the spatial vectors selected by the receiver on other devices or communication systems—for example, spatial vectors in some directions in a terrestrial communication system might interfere with satellite communication—the data transmitter limits the power of the spatial vectors in the set. The following example illustrates this communication process using a network device (such as a wireless access network device) as the data transmitter and a terminal device as the data receiver.

[0096] Please see Figure 5 , Figure 5 This is a schematic diagram of a communication process. For example... Figure 5 As shown, the communication process includes the following steps S501 to S505:

[0097] S501, the network device sends channel measurement configuration information to the terminal device.

[0098] The channel measurement configuration information is used to indicate the channel measurement to be performed and the configuration parameters for performing the channel measurement, such as the parameters for configuring time-domain and frequency-domain resources. For example, the channel measurement configuration information can indicate the resources used to carry the channel state information reference signal (CSI-RS), i.e., CSI-RS resources.

[0099] The channel measurement configuration information includes information indicating the scaling factor for each spatial vector in the spatial vector set.

[0100] Each spatial vector's scaling factor can be represented by multiple bits, such as 3 bits. For a type I codebook, each spatial vector in the set corresponds to a scaling factor; different spatial vectors may have the same or different scaling factors. Optionally, the scaling factor of a spatial vector may be one of the following: (i.e., 1) It should be understood that the scaling factors of spatial vectors listed here are for illustrative purposes only. In actual implementation, there may be other scaling factors for spatial vectors. The scaling factor of a spatial vector can be used to limit the power corresponding to that spatial vector. The power corresponding to each spatial vector is the sum of the power on the transport layer associated with that spatial vector. The power on each transport layer associated with each spatial vector can be determined according to the following formula (6) or formula (7).

[0101] S502, the network device sends a CSI-RS to the terminal device on the CSI-RS resource. Correspondingly, the terminal device receives the CSI-RS from the network device on the CSI-RS resource.

[0102] In mobile communication systems, such as New Radio (NR) systems, network devices transmit CSI-RS on CSI-RS resources for terminal devices to probe the downlink channel, and terminal devices receive CSI-RS on pre-configured CSI-RS resources to perform channel estimation.

[0103] S503, the terminal device obtains CSI based on CSI-RS.

[0104] The CSI includes a precoding matrix indication (PMI) codebook, such as information from a Type I codebook in release 15 (R15). The CSI can indicate a Type I codebook by indicating spatial vectors associated with multiple transport layers. For example, the CSI may include an index or identifier of at least one spatial vector associated with multiple transport layers, or it may include information that can be used to determine at least one spatial vector associated with multiple transport layers. The multiple transport layers include two or more transport layers. Each transport layer may be associated with one spatial vector, and each spatial vector may be associated with one or two transport layers. The at least one spatial vector associated with multiple transport layers includes at least one spatial vector associated with each of the multiple transport layers, and there may be one or more at least one spatial vector associated with multiple transport layers. When there are multiple at least one spatial vector associated with multiple transport layers, any two spatial vectors among them are orthogonal to each other. The number of multiple transport layers can be K, where K is an integer greater than 1.

[0105] It should be understood that the number of transport layers in a multi-layered transport system can also be interpreted as the number of layers in the channel matrix between the terminal device and the network device. The transport layer is relative to the terminal device and the network device, and the number of transport layers in a multi-layered transport system is equal to the rank of the channel matrix between the terminal device and the network device. In other words, the number of transport layers in a multi-layered transport system is equal to the number of streams in the channel between the terminal device and the network device.

[0106] S504, the terminal device reports CSI to the network device.

[0107] S505, the network device sends data to the terminal device according to the CSI.

[0108] In some scenarios, the scaling factors of multiple transport layers involved above Figure 5 can be determined by the network device. As an example, the network device can determine the second scaling factor of each transport layer according to the total number of transport layers corresponding to the channel, the total number of transport layers corresponding to the spatial domain vectors associated with each transport layer, and the first scaling factor of the spatial domain vectors associated with the transport layer, and determine the second power corresponding to each transport layer based on the second scaling factor of each transport layer and the power evenly distributed to each transport layer (i.e., the first power). Among them, the power evenly distributed to each transport layer (i.e., the first power) refers to the power that the total power supported by the network device is theoretically evenly distributed to each of the multiple transport layers. In other words, the first power corresponding to each transport layer can satisfy the relationship shown in the following formula (4):

[0109]

[0110] Among them, P′ K,k0 is the first power corresponding to each transport layer, and P sum is the total power supported by the second communication device.

[0111] It should be understood that each of the multiple transport layers corresponds to a first power and a second power. The first powers corresponding to different transport layers among the multiple transport layers are the same. Among the multiple transport layers, the second power corresponding to the k0th transport layer is the power actually allocated to the k0th transport layer when the network device does not support the power boosting function. 0 < k0 < K, and k0 is an integer.

[0112] The second scaling factor of the k0th transport layer among the multiple transport layers satisfies the relationship shown in the following formula (5):

[0113]

[0114] Among them, α K,k0 is the second scaling factor of the k0th transport layer among the multiple transport layers, K is the number of transport layers among the multiple transport layers, s K,k0 represents the spatial domain vector associated with the k0th transport layer among the multiple transport layers, r K,k0 represents the total number of transport layers corresponding to the spatial domain vector associated with the k0th transport layer among the multiple transport layers, that is, r K,k0∈{1,2}. Furthermore, different spatial vectors correspond to different transport layers. K is an integer greater than 1.

[0115] The second power corresponding to each of the multiple transmission layers satisfies the relationship shown in formula (6) or formula (7) below:

[0116] P″ K,k0 =α K,k0 *P′ a (6)

[0117]

[0118] Among them, P″ K,k0 This represents the second power corresponding to the k0th transmission layer among multiple transmission layers.

[0119] Based on the analysis of the above formula (5), it can be seen that among multiple transmission layers, there may be transmission layers with corresponding second power less than corresponding first power. In other words, in the above scheme, there may be transmission layers whose actual transmission power is less than the power theoretically allocated to that transmission layer. This will cause the actual transmission power of the network device to be less than the total power that the network device can transmit, reducing the signal-to-noise ratio and resulting in poor communication performance.

[0120] The following combines transport layers 1 to 4 and the spatial vector v l,m v l′,m′ v l″,m″ For example, if transport layer 1 to transport layer 4 correspond to spatial vector v respectively. l,m v l′,m′ v l″,m″ and v l″′,m″′ v l,m v l′,m′ v l″,m″ and v l″′,m″′ The corresponding first scaling factor is 1, respectively. If the total power supported by the network device is 4p0, then as shown in Table 1, the power of each transport layer, the average power distribution, and the power of each transport layer when the network device does not support power boost are shown in Table 1 below.

[0121] Table 1

[0122]

[0123] Wherein, the spatial vector v l,m The power on the vector is less than or equal to p0, and the spatial vector v l′,m′ The power on the vector is less than or equal to 2p0, and the spatial vector v l′,m′ The power on the vector is less than or equal to p0, and the spatial vector v l′,m′ The power on is less than or equal to

[0124] As can be seen from Table 1 above, the difference between the second power corresponding to transmission layer 4 and the first power corresponding to transmission layer 4 is... In other words, there will be on transport layer 4. This results in a lack of power margin. This leads to a waste of power resources, resulting in poor communication performance.

[0125] To address the aforementioned technical problems, embodiments of this application provide a communication method. In this method, a first communication device can instruct a second communication device to perform power boosting on a transmission layer. This allows the remaining power on transmission layers with surplus power among the K transmission layers to be allocated to transmission layers with at least some of the K transmission layers without surplus power. This increases the actual power used for communication on the K transmission layers, improves the signal-to-noise ratio, and further enhances communication performance.

[0126] The technical solutions in this application will now be described with reference to the accompanying drawings.

[0127] It should be noted that the communication method provided in the embodiments of this application can be applied to... Figure 1 For any two nodes shown, such as between a terminal device and a network device, the specific implementation can be referred to in the following method embodiments, which will not be repeated here.

[0128] It should be noted that the solutions in the embodiments of this application can also be applied to other communication systems, and the corresponding names can be replaced by the names of the corresponding functions in other communication systems.

[0129] The following will combine Figure 6 The communication method provided in the embodiments of this application will be described in detail.

[0130] For example, Figure 6 This is a flowchart illustrating a communication method provided in an embodiment of this application. This communication method can be applied to a first communication device, such as... Figure 1 The terminal equipment and the second communication device shown are as follows: Figure 1 The communication between the network devices shown.

[0131] like Figure 6 As shown, the communication method includes the following steps:

[0132] S601, the first communication device sends first information. Correspondingly, the second communication device receives the first information.

[0133] The first information is used to determine the N second transport layers out of the M first transport layers. It can be understood that the M first transport layers include the N second transport layers.

[0134] M first transport layers are transport layers among K transport layers, and the K transport layers include Q third transport layers. In other words, the K transport layers include M first transport layers and Q third transport layers.

[0135] In this embodiment of the application, the first information may include information for directly or indirectly indicating each of the M first transport layers.

[0136] In one possible implementation, the first information may include information indicating the index of each of the M first transport layers. For example, the first information may include the index of each of the M first transport layers.

[0137] In another possible implementation, the first information may include information indicating the index of at least one spatial vector. For example, the first information may include the index of at least one spatial vector. That is, the first information includes the indices of the spatial vectors corresponding to each of the N second transport layers. In this way, by indicating the N second transport layers by indicating the indices of the spatial vectors, the overhead can be reduced.

[0138] It should be understood that the second communication device can obtain the correspondence between each of the K transport layers and the spatial vector. Thus, after receiving the first information, the second communication device can determine the M first transport layers based on the correspondence between each of the K transport layers and the spatial vector, and at least one spatial vector.

[0139] For example, suppose the first information includes the spatial vector v l,m v l′,m′ and v l″,m″ In the correspondence between each of the K transport layers and the spatial vector, v l,m The corresponding transport layers include transport layer 1 and transport layer 2, v l′,m′ The corresponding transport layer includes transport layer 3, v l″,m″ The corresponding transport layer includes transport layer 4. Therefore, the M first transport layers include transport layer 1, transport layer 2, transport layer 3 and transport layer 4.

[0140] It should be understood that the above implementation of the first information is for illustrative purposes only. In actual implementation, the first information may have other implementation methods, which will not be elaborated here. The transport layer index can also be called the transport layer identifier or other possible names, and the spatial vector index can also be called the spatial vector identifier or other possible names, which will not be elaborated here.

[0141] As an example, the first communication device may be a terminal device, a communication module, a circuit or chip responsible for communication functions, a chip system, or other components or parts. This communication module, circuit or chip responsible for communication functions, chip system, or other components or parts may be used in the terminal device.

[0142] As an example, the second communication device may be a network device, a communication module, a circuit or chip responsible for communication functions, a chip system, or other components or parts. This communication module, circuit or chip responsible for communication functions, chip system, or other components or parts may be used in a network device.

[0143] S602, the second communication device transmits second information based on the target power corresponding to each of the K transmission layers and at least one spatial vector associated with the K transmission layers. Correspondingly, the first communication device receives the second information from the second communication device.

[0144] Understandably, for the first communication device, the second information includes data from K transport layers, and the second information is determined by the second communication device based on... The target power corresponding to each of the K transport layers and the spatial vector associated with each transport layer are transmitted.

[0145] Each of the K transport layers corresponds to a first power and a second power.

[0146] The first power corresponding to each transport layer is the power that is evenly distributed to each transport layer.

[0147] The first power corresponding to each transmission layer is determined based on the total power supported by the second communication device and the number of transmission layers in the K transmission layers. For example, the first power corresponding to each of the K transmission layers is equal to the power after the total power supported by the second communication device is evenly distributed among the K transmission layers. For details on the implementation of the first power corresponding to each transmission layer, please refer to the relevant introduction of formula (4), which will not be elaborated here.

[0148] The second power corresponding to each transmission layer is the power corresponding to each transmission layer when the second communication device does not support power boosting.

[0149] In one possible implementation, the second power corresponding to the kth third transport layer out of the K transport layers is determined based on the number of K transport layers, the first scaling factor of the spatial vector associated with the kth transport layer, and the total number of transport layers in the K transport layers that correspond to the same spatial vector as the kth transport layer. <k≤K。

[0150] Optionally, the implementation of the second power corresponding to each transmission layer can be found in the relevant introduction of formula (6) or formula (7), which will not be elaborated here.

[0151] The second power of each of the M first transmission layers is equal to the first power of each of the first transmission layers; the second power of each of the Q third transmission layers is less than the first power of the third transmission layer, and the target power of each third transmission layer is less than or equal to the second power of each of the third transmission layers.

[0152] The third transmission layer can also be understood as a transmission layer with a power margin.

[0153] In one possible implementation, the target power corresponding to each of the N second transmission layers is greater than the first power corresponding to each second transmission layer, and less than or equal to the third power corresponding to each second transmission layer. Alternatively, the N second transmission layers can be understood as including the transmission layers that actually perform power boosting among the M first transmission layers.

[0154] The third power corresponding to each second transport layer can also be understood as the maximum power that the transport layer can support when supporting power boost.

[0155] Optionally, the third power corresponding to the nth second transmission layer among the N second transmission layers is determined based on the first power corresponding to the nth second transmission layer, the number of K transmission layers, the first scaling factor of the spatial vector associated with the nth second transmission layer, and the number of transmission layers among the K transmission layers that correspond to the same spatial vector as the nth second transmission layer.

[0156] As an example, the third power corresponding to the nth second transmission layer in N second transmission layers satisfies the relationship shown in formula (8) or formula (9) as follows:

[0157]

[0158] Among them, P″′ N,n This represents the third power corresponding to the nth second transport layer out of N third transport layers. N,n Let r represent the spatial vector associated with the nth transport layer out of K transport layers. N,n This represents the total number of transport layers corresponding to the spatial vector associated with the nth transport layer out of K transport layers. N,n ∈{1,2}. P′ a It is the first power corresponding to each of the K transmission layers. Regarding P′ a The implementation can be found in the relevant introduction in formula (4), which will not be elaborated here.

[0159] Each transmission layer corresponds to a first power difference, which is the power difference between the target power and the first power of each transmission layer. The sum of the first power differences of N second transmission layers is less than or equal to the sum of the first power differences of Q third transmission layers. M, K, Q, and N are integers, K is greater than 1, M, Q, and N are greater than or equal to 1, M ≤ K, and Q ≤ K.

[0160] For the q-th third transmission layer out of Q third transmission layers, the magnitude of the first power difference corresponding to the q-th third transmission layer is equal to the magnitude of the power margin on the q-th third transmission layer. That is, the magnitude of the first power difference corresponding to the q-th third transmission layer is equal to the magnitude of the power margin on the q-th third transmission layer.

[0161] It should be understood that the M first transport layers include M0 first transport layers in addition to the N second transport layers. The target power of the m0th first transport layer among the M0 first transport layers is equal to the second power of the m0th first transport layer. The first power corresponding to the mth first transport layer among the M first transport layers is equal to the second power corresponding to the mth first transport layer. M0, m0, and m are all integers, 0 ≤ m ≤ 0. <m0<M0,0<m<M。

[0162] Specifically, the first power difference among the N second transmission layers can be allocated to the M first transmission layers that support power boost. A transmission layer that supports power boost is one whose corresponding third power is greater than its corresponding second power.

[0163] One possible implementation is that the first power boost factor corresponding to each second transport layer is one of a plurality of candidate power boost factors.

[0164] The multiple candidate power boost factors can be pre-configured, such as as agreed in the protocol, or the multiple candidate power boost factors can be configured by the second communication device.

[0165] In this way, the first power boost factor corresponding to each second transport layer can be selected from multiple candidate power boost factors, which can reduce computational complexity and thus improve communication efficiency.

[0166] In this embodiment, the target power corresponding to each of the N second transmission layers can be determined by the second communication device. Examples of different methods are given below.

[0167] Method 1: The target power corresponding to each of the N second transmission layers can be determined by the second communication device based on the first power boosting factor of each second transmission layer.

[0168] The following combines transport layers 1 to 4 and the spatial vector vl,m v l′,m′ v l″,m″ The second communication device supports a total power of 4p0, illustrating the principle of power allocation. If transmission layers 1 to 4 correspond sequentially to the spatial vector v... l,m v l′,m′ v l″,m″ and v l″′,m″′ v l,m v l′,m′ v l″,m″ and v l″′,m″′ Their respective first scaling factors are 1, v l,m v l′,m′ v l″,m″ and v l″′,m″′ Their respective first power boost factors are as follows: If 1 and 2 are given, the correspondence between the transmission layer, spatial vector, first scaling factor, second scaling factor, first power, first power boosting factor, and target power is shown in Table 2 below.

[0169] Table 2

[0170]

[0171] Optionally, the first power boost factor for each second transport layer can be indicated by the first communication device. In this case, Figure 6 The provided method may also include S603.

[0172] S603, the first communication device sends the third information. Correspondingly, the second communication device receives the third information.

[0173] The third information is used to indicate the first power boosting factor corresponding to each of the N second transmission layers. The first power boosting factor corresponding to each second transmission layer is used to determine the target power corresponding to each second transmission layer.

[0174] Since the first communication device can measure channel state information, it can determine the power boosting factor of each transmission layer based on this information. For example, it can determine the power boosting factor of each transmission layer based on the transmission conditions of the spatial vector and report the specific power boosting factor of the transmission layer for which power boosting is performed. This can improve the utilization rate of communication resources and thus enhance system performance.

[0175] To facilitate understanding, the following example illustrates the third piece of information.

[0176] In Method 1.1, when the first power boost factor corresponding to each second transport layer is one of multiple candidate power boost factors, a bitmap can be used to indicate the first power boost factor corresponding to each second transport layer. Each candidate power boost factor corresponds to one bit in the bitmap. Each second transport layer can correspond to one bitmap. It can be understood that when different second transport layers in N second transport layers correspond to the same first power boost factor, the N second transport layers correspond to the same bitmap.

[0177] Method 1.2, the third information includes a first difference between the first power boost factor corresponding to the nth second transmission layer and the first scaling factor corresponding to the nth second transmission layer.

[0178] It is understood that the first information may also include a second difference between the first power boost factor corresponding to the nth second transport layer out of the N second transport layers and the third parameter. The third parameter may be a pre-configured constant or one of the first power boost factors corresponding to each of the N second transport layers as agreed upon in the protocol.

[0179] In this way, by reporting the first difference corresponding to each of the N second transport layers, the reporting of the first power boost factor can be avoided, thereby reducing the amount of data transmitted, thus reducing resource overhead and improving communication efficiency.

[0180] In method 1.3, each of the N second transport layers corresponds to a first parameter. The first parameter corresponding to the nth second transport layer is determined based on the second parameter and the first difference corresponding to the nth second transport layer. The first difference corresponding to the nth second transport layer is the difference between the first power boost factor corresponding to the nth second transport layer and the first scaling factor corresponding to the nth second transport layer. The first parameter is an integer, and the second parameter is a constant. The number of bits occupied by the first parameter corresponding to the nth second transport layer is less than the number of bits occupied by the scaling factor corresponding to the nth second transport layer. The first information includes the first parameter corresponding to each of the N second transport layers.

[0181] The number of bits occupied by the first parameter corresponding to the nth second transport layer is less than the number of bits occupied by the scaling factor corresponding to the nth second transport layer. The first information includes the first parameter corresponding to each of the N second transport layers. In other words, the scaling factors corresponding to the N transport layers can be mapped to numbers that occupy fewer bits, thereby reducing the amount of data transmitted, thus reducing resource overhead and improving communication efficiency.

[0182] In method 1.4, there is a correspondence between the scaling factor of the transport layer and the binary value. The third information includes the binary value corresponding to the first power boost factor of each of the N second transport layers. Thus, the first power boost factor of each second transport layer can be indicated by reporting the binary value corresponding to its first power boost factor. Directly indicating the first power boost factor with binary values ​​allows for a more accurate and optimal power allocation method that is not limited by the protocol's predefined range, thereby improving the performance of the communication system.

[0183] It should be understood that the product of the power boost factor of the nth second transmission layer and the first power corresponding to the nth transmission layer is less than or equal to the third power corresponding to the nth transmission layer.

[0184] Method 2: The target power corresponding to each of the N second transmission layers can be determined by the second communication device according to the priority of each second transmission layer.

[0185] In method 2.1, the target power of each of the N second transmission layers is related to the priority of each second transmission layer.

[0186] Optionally, the priority of each second transport layer corresponds to the order of the indices of the spatial vectors corresponding to each second transport layer in the first information.

[0187] In this way, the first power boost factor of each second transport layer can be indicated by reporting the binary value corresponding to the first power boost factor of each second transport layer. Directly indicating the first power boost factor with binary value can obtain a more accurate and optimal power allocation method that is not limited by the predefined range of the protocol, thereby improving the performance of the communication system.

[0188] When the priorities corresponding to each of the N second transport layers are indicated by the second communication device. Figure 6 The communication method provided may also include S604.

[0189] S604, the first communication device sends the fourth information. Correspondingly, the second communication device receives the fourth information.

[0190] The fourth piece of information is used to indicate the priority of each of the N second transport layers.

[0191] Since the first communication device measures the channel state information, it determines the priority of each transmission layer based on the spatial vector with better transmission conditions and reports it. This allows the second communication device to allocate power margin according to the priority of each second transmission layer reported by the first communication device. The second communication device can prioritize allocating power margin on the transmission layers associated with the spatial vector with better transmission conditions reported by the first communication device. The index of the spatial vector determines the transmission layer to which the remaining power is preferentially allocated, which can improve the performance of the communication system.

[0192] Method 2.2 prioritizes allocating power margins to the first transmission layers among the M first transmission layers that meet the second condition. If there are unallocated power margins, they are then allocated to the first transmission layers among the M first transmission layers that meet the first condition. The following explanation addresses different scenarios.

[0193] Case 1: The M first transport layers include the first transport layer that satisfies the first condition and the first transport layer that satisfies the second condition.

[0194] The N second transmission layers include transmission layers that satisfy the first condition and transmission layers that satisfy the second condition. The target power of each of the N second transmission layers is related to the priority of each second transmission layer. The priority of the transmission layer that satisfies the second condition is higher than the priority of the transmission layer that satisfies the first condition.

[0195] In this way, excess power on the second transport layer can be allocated to transport layers that support power boosting, improving the signal-to-noise ratio of the channel and thus enhancing communication performance. Furthermore, in some scenarios, the channel conditions of spatial vectors associated with transport layers satisfying the second condition are better than those of spatial vectors associated with transport layers satisfying the first condition. In such cases, defining priorities can ensure that excess power is preferentially allocated to spatial vectors with better channel conditions, thereby further improving the performance of the communication system.

[0196] The following combines transport layers 1 to 4 and the spatial vector v l,m v l′,m′ v l″,m″ The second communication device supports a total power of 4p0, illustrating the principle of power allocation. If transmission layers 1 to 4 correspond sequentially to the spatial vector v... l,m v l′,m′ v l″,m″ and v l″′,m″′ v l,m v l′,m′ v l″,m″ and v l″′,m″′ Their respective first scaling factors are 1, The correspondence between the transmission layer, spatial vector, first scaling factor, second scaling factor, first power, second power, third power and target power is shown in Table 3 below.

[0197] Table 3

[0198]

[0199] As shown in Table 3, among transport layers 1 to 4, transport layers 1 and 2 are the first transport layers, and transport layers 3 and 4 are the third transport layers. Transport layer 3 has... The power margin of transmission layer 4 is sufficient. The power margin, total The power margin. Therefore, it can be... The power margin is allocated to at least one of the K transmission layers, excluding transmission layers 3 and 4. Among transmission layers 1 to 2, the first scaling factor of the spatial vector associated with transmission layer 1 is 1, indicating that transmission layer 1 satisfies the first condition; the first scaling factor of the spatial vector associated with transmission layer 2 is... Furthermore, the second scaling factor of transmission layer 2 is 2, and 2 > 1, indicating that transmission layer 2 satisfies the second condition. Therefore, under the power margin allocation method 2.2, the target power of transmission layer 2 is 2p0, and the target power of transmission layer 1 is...

[0200] Optionally, in case 1, if there are multiple first transmission layers that satisfy the second condition, the total power margin can be evenly distributed among the first transmission layers that satisfy the second condition, and then, if there is still a power margin after it has been distributed to the first transmission layers that satisfy the second condition, it can be distributed to the first transmission layers that satisfy the first condition.

[0201] For example, if v l′,m′ v l″,m″ and v l″′,m″′ Their respective first scaling factors are 1, The transmission layer, spatial vector, first scaling factor, second scaling factor, first power, second power, third power, and target power are shown in Table 4 below.

[0202] Table 4

[0203]

[0204]

[0205] As shown in Table 4, among transport layers 1 to 3, which are the first transport layers, and transport layer 4, which is the third transport layer, transport layer 4 has... The power margin is sufficient, therefore, it can be The power margin is allocated to at least one of the K transmission layers, excluding transmission layer 4. Among transmission layers 1 to 3, the first scaling factor of the spatial vector associated with transmission layer 1 is 1, indicating that transmission layer 1 satisfies the first condition; the first scaling factor of the spatial vector associated with transmission layer 2 is... And the second scaling factor of transport layer 2 is It is evident that transport layers 2 and 3 satisfy the second condition. Therefore, according to method 2.2, it can be... The power margin is preferentially allocated to transmission layer 2 and transmission layer 3. For example, it can be... The power margin is evenly distributed between transmission layer 2 and transmission layer 3. At this point, for transmission layer 2, the distributed power is... Therefore, the target power of transport layer 2 is For transport layer 3, the allocated power is Therefore, the target power of transmission layer 3 is

[0206] Alternatively, in case 1, if there are multiple first transmission layers that satisfy the second condition, the total power margin can be allocated sequentially among the transmission layers that satisfy the second condition according to the index of the transmission layer. Then, if there is still a power margin after allocating to the first transmission layer that satisfies the second condition, it can be allocated to the first transmission layer that satisfies the first condition.

[0207] In this scenario, if power margins have been allocated to transmission layers that meet the second condition, and if there are two or more transmission layers that meet the first condition, the remaining power margins can optionally be distributed equally. The specific allocation principle can be found in Table 4 regarding the average distribution of total power margins among the first transmission layers that meet the second condition, and will not be elaborated upon here. Alternatively, the remaining power margins can be distributed sequentially according to the index of the transmission layers that meet the first condition.

[0208] With power margin evenly distributed, the Nth second transmission layer among the N second transmission layers satisfies the first condition, and the target power corresponding to the Nth second transmission layer is less than or equal to the third power corresponding to the Nth second transmission layer. The target power corresponding to the jth second transmission layer among the N second transmission layers is equal to the third power corresponding to the jth second transmission layer. j is an integer, and 0 < j < 0. <j<N。

[0209] Scenario 2: The M first transmission layers do not include any first transmission layer satisfying the second condition. In this case, the power margin is allocated among the M first transmission layers that satisfy the first condition. In this situation, at least one of the M first transmission layers satisfying the first condition has a target power greater than its corresponding second power and less than its corresponding third power. The allocation of the power margin in this case can be referred to the relevant description in Method 2.4 below, and will not be elaborated further.

[0210] Case 3: If none of the M first transmission layers satisfies the first condition, the power margin is allocated among the M first transmission layers that satisfy the second condition. In this case, at least one of the M first transmission layers satisfying the second condition has a target power greater than the second power of that first transmission layer and less than the third power of that first transmission layer. The allocation of the power margin in this case can be referred to the relevant description in Method 2.5 below, and will not be repeated here.

[0211] In method 2.3, the power margin is first allocated to the first transmission layers among the M first transmission layers that meet the first condition. If there is any unallocated power margin, it is then allocated to the first transmission layers among the M first transmission layers that meet the second condition. The implementation principle is similar to that in method 2.2. The difference is that in method 2.3, the first transmission layer that meets the first condition has a higher priority than the first transmission layer that meets the second condition.

[0212] Method 2.4: The power margin is allocated to the first transmission layers among the M first transmission layers that meet the first condition.

[0213] For details on the implementation of the first condition, please refer to the above introduction on the first condition; further details will not be provided here.

[0214] In this way, excess power on the second transport layer can be allocated to the transport layer that supports power boosting, which can improve the signal-to-noise ratio of the channel and thus improve communication performance. The power on the transport layer that meets the first condition does not need to consider the interference caused to other communication devices, and there are no power size restrictions imposed to suppress interference. Therefore, excess power can be allocated to the transport layers corresponding to these spatial vectors, avoiding the influence of power size restrictions.

[0215] Optionally, the sum of the first power differences (i.e., the total power margin) corresponding to each of the Q third transmission layers is evenly distributed across the N second transmission layers. This allows excess power from the second transmission layers to be allocated to the transmission layers supporting power boosting, improving the channel's signal-to-noise ratio and thus enhancing communication performance. Furthermore, it reduces computational load and implementation complexity.

[0216] In this case, if the sum of the first power and the equally distributed power margin is less than the third power corresponding to the nth second transmission layer, then the target power corresponding to the nth second transmission layer is the sum of the first power and the equally distributed power margin corresponding to the nth second transmission layer. If the sum of the first power and the equally distributed power margin is greater than or equal to the third power corresponding to the nth second transmission layer, then the target power corresponding to the nth second transmission layer is the third power corresponding to the nth second transmission layer. Or, the target power corresponding to the nth second transmission layer satisfies the relationship shown in the following formula (10):

[0217]

[0218] P d,n Let P be the target power corresponding to the nth second transmission layer. ra This represents the power margin that is evenly distributed across each of the N second transmission layers.

[0219] It is understood that "greater than" in formula (10) can be replaced with "greater than or equal to", and "less than or equal to" in formula (10) can be replaced with "less than". In the embodiments of this application, the average allocation of power margin refers to the power margin that can be theoretically allocated to each transmission layer. For a transmission layer, the target power of the transmission layer must be less than the third power corresponding to the transmission layer, which will not be elaborated further.

[0220] The following combines transport layers 1 to 4 and the spatial vector v l,m v l′,m′ v l″,m″ The second communication device supports a total power of 4p0, which illustrates the principle of power distribution.

[0221] For example, if transport layer 1 to transport layer 4 correspond to the spatial vector v respectively l,m v l′,m′ v l″,m″ and v l″′,m″′ v l,m v l′,m′ v l″,m″ and v l″′,m″′ Their respective first scaling factors are 1, 1, 1, and... The correspondence between the transmission layer, spatial vector, first scaling factor, second scaling factor, first power, second power, third power and target power is shown in Table 5 below.

[0222] Table 5

[0223]

[0224] As shown in Table 5, among transport layers 1 to 3, which are the first transport layers, and transport layer 4, which is the third transport layer, transport layer 4 has... The power margin. Therefore, it can be... The power margin is allocated to transmission layers 1 through 3. Theoretically, each transmission layer from transmission layer 1 to transmission layer 3 has a power margin of [missing information]. because Therefore, the target power corresponding to each of transmission layer 1, transmission layer 2, and transmission layer 3 is...

[0225] Alternatively, the sum of the power differences corresponding to each of the Q third transport layers is allocated according to the priorities of the N second transport layers, where the priority of each second transport layer is determined based on the index of each second transport layer. In other words, the target power of each of the M first transport layers can be determined according to the index of each of the M first transport layers.

[0226] In this way, excess power on the second transport layer can be allocated to the transport layer that supports power boosting, which can improve the signal-to-noise ratio of the channel and thus improve communication performance. Furthermore, the remaining power can be preferentially allocated to transport layers with lower indices. If a transport layer with a lower index is more important than one with a higher index, such as having better communication quality, the signal-to-noise ratio on the more important transport layer can be further reduced, thereby further improving communication performance.

[0227] In one possible scenario, the priority of each second transport layer is negatively correlated with the size of its index. That is, the larger the index of each second transport layer, the lower its priority; the smaller the index of each second transport layer, the higher its priority.

[0228] The following combines transport layers 1 to 4 and the spatial vector v l,m v l′,m′ v l″,m″ The second communication device supports a total power of 4p0, which illustrates the principle of power distribution.

[0229] If transport layer 1 to transport layer 4 correspond to spatial vector v respectively l,m vl′,m′ v l″,m″ and v l″′,m″′ v l,m v l′,m′ v l″,m″ and v l″′,m″′ Their respective first scaling factors are 1, 1, 1, and... The correspondence between the transmission layer, spatial vector, first scaling factor, second scaling factor, first power, second power, third power and target power is shown in Table 6 below.

[0230] Table 6

[0231]

[0232] As shown in Table 6, among transport layers 1 to 4, transport layers 1 and 2 are the first transport layers, and transport layers 3 and 4 are the third transport layers. Transport layer 4 has... The power margin. Assume the index of transport layer 1 is "1", the index of transport layer 2 is "2", the index of transport layer 3 is "3", and the index of transport layer 4 is "4", meaning the indices of transport layers 1 through 4 increase sequentially, and their priorities decrease sequentially. Since transport layer 1 has the highest priority among transport layers 1 through 3, therefore, the power margin can be... The power margin is preferentially allocated to transmission layer 1. Because... At this time, the target power of transmission layer 1 is

[0233] Thus, if the transport layer with a smaller index is more important, such as having better communication quality, then prioritizing the allocation of the remaining power to the layer with the smaller index can further improve communication performance.

[0234] In another possible scenario, the priority of each second transport layer is positively correlated with the size of its index. That is, the larger the index of each second transport layer, the higher its priority; the smaller the index of each second transport layer, the lower its priority.

[0235] Understandably, in this case, the principle of remaining power allocation is similar to when the priority of each second transport layer is negatively correlated with the size of the index of each second transport layer, except that the remaining power is preferentially allocated to the transport layer with the larger index.

[0236] Thus, if a transport layer with a larger index is more important, such as having better communication quality, then prioritizing the allocation of remaining power to a layer with a larger index can further improve communication performance.

[0237] It is understandable that in some scenarios in Method 2.2 and in Method 2.4, N second transport layers are transport layers that satisfy the first condition.

[0238] Method 2.5:

[0239] In one possible implementation, the N second transport layers are transport layers that satisfy the second condition.

[0240] For details on how the second condition is implemented, please refer to the aforementioned introduction on the second condition; further details will not be provided here.

[0241] In this way, excess power on the second transport layer can be allocated to the transport layer that supports power boosting, which can improve the signal-to-noise ratio of the channel and thus improve communication performance. The spatial vectors associated with the transport layers that satisfy the second condition are spatial vectors whose power is limited under interference suppression conditions. Even when the power is limited, the first communication device still selects the transport layers associated with these spatial vectors. Loading downlink data in the directions of these spatial vectors can achieve better system performance. Therefore, the remaining power can be allocated to these transport layers to achieve better communication system performance.

[0242] Optionally, the sum of the first power differences corresponding to each of the Q third transmission layers is evenly distributed across the N second transmission layers.

[0243] The following combines transport layers 1 to 4 and the spatial vector v l,m v l′,m′ v l″,m″ The second communication device supports a total power of 4p0, which illustrates the principle of power distribution.

[0244] If transport layer 1 to transport layer 4 correspond to spatial vector v respectively l,m v l′,m′ v l″,m″ and v l″′,m″′ v l,m v l′,m′ v l″,m″ and v l″′,m″′ Their respective first scaling factors are 1, The correspondence between the transmission layer, spatial vector, first scaling factor, second scaling factor, first power, second power, third power and target power is shown in Table 7 below.

[0245] Table 7

[0246]

[0247] As shown in Table 7, among transport layers 1 to 4, transport layers 1, 2, and 3 are all first transport layers, and transport layer 4 is the third transport layer. Transport layers 2 and 3 are layers that satisfy the second condition. Transport layer 4 has... The power margin. Therefore, it can be... The power margin is allocated to transmission layer 2 and transmission layer 3. Theoretically, each transmission layer from transmission layer 1 to transmission layer 3 has a power margin of [missing information]. because Therefore, the target power corresponding to transmission layer 2 is The target power corresponding to transmission layer 3 is

[0248] Alternatively, the sum of power differences corresponding to each of the Q third transport layers is allocated according to the priorities of the N second transport layers, where the priority of each second transport layer is determined by the size of its index. In other words, the sum of power differences corresponding to each of the Q third transport layers is allocated according to the size of the index of each of the N second transport layers.

[0249] In some cases, the priority of each of the N second transport layers is negatively correlated with the size of the index of each second transport layer.

[0250] The smaller the third power corresponding to the second transport layer, the higher the priority of the second transport layer; the larger the index of the second transport layer, the lower the priority of the second transport layer. It should be understood that for M first transport layers, the priority of each first transport layer is negatively correlated with the index of each first transport layer; that is, the smaller the index of the first transport layer, the higher the priority of the first transport layer; the larger the index of the first transport layer, the lower the priority of the first transport layer.

[0251] The following combines transport layers 1 to 4 and the spatial vector v l,m v l′,m′ v l″,m″ For example, the total power supported by the second communication device is 4p0. If transport layer 1 to transport layer 4 correspond sequentially to the spatial vector v... l,m v l′,m′ v l″,m″ and v l″′,m″′ v l,m v l′,m′ v l″,m″ and v l″′,m″′ The corresponding scaling factors are 1, ... The correspondence between the transmission layer, spatial vector, first scaling factor, second scaling factor, first power, second power, third power and target power is shown in Table 8 below.

[0252] Table 8

[0253]

[0254] As can be seen from Table 8, among Transport Layers 1 to 4, Transport Layers 1, 2, and 3 are the first transport layers and Transport Layer 4 is the third transport layer, where Transport Layers 2 and 3 are layers meeting the second condition. Transport Layer 4 has power margin. Assuming that the index of Transport Layer 1 is "1", the index of Transport Layer 2 is "2", the index of Transport Layer 3 is "3", and the index of Transport Layer 4 is "4", that is, the indexes in Transport Layers 1 to 4 increase in sequence, and the priorities decrease in sequence. Since among Transport Layers 2 and 3, Transport Layer 2 has the highest priority, therefore, the power margin can be preferentially allocated to Transport Layer 2. Since At this time, the target power of Transport Layer 2 is

[0255] In some other examples, the priority of each of the N second transport layers is positively correlated with the magnitude of the index of each of the N second transport layers. That is to say, if the index of a second transport layer is larger, the priority of this second transport layer is higher; if the index of a second transport layer is smaller, the priority of this second transport layer is lower. It should be understood that for the M first transport layers, the priority of each of the M first transport layers is positively correlated with the index of each of the M first transport layers; that is to say, if the index of a first transport layer is larger, the priority of this first transport layer is higher; if the index of a first transport layer is smaller, the priority of this first transport layer is lower. In this case, the realization of the target power on the N second transport layers is similar to the case where the priority of each of the N second transport layers is negatively correlated with the magnitude of the index of each of the N second transport layers, and will not be elaborated.

[0256] In the case of average distribution, the first power corresponding to each of the N second transport layers is less than or equal to the third power corresponding to each of the N second transport layers.

[0257] In the case of sequential distribution, the target power corresponding to the j-th second transport layer in the second transport layers is equal to the third power of the j-th second transport layer, where j is an integer and 0 < j < N. The target power corresponding to the N-th second transport layer is less than or equal to the third power corresponding to the N-th second transport layer.

[0258] It can be understood that in some scenarios of Method 2.2 and in Method 2.5, the N second transport layers are transport layers meeting the first condition.

[0259] Method 2.6: The target power corresponding to each of the N second transport layers is determined according to the priority of each of the N second transport layers, and the priority of each of the N second transport layers is negatively correlated with the third power corresponding to each of the N second transport layers.

[0260] In other words, the lower the third power corresponding to the second transmission layer, the higher the priority of that second transmission layer; conversely, the higher the third power corresponding to the second transmission layer, the lower the priority of that second transmission layer. It should be understood that for M first transmission layers, the priority of each first transmission layer is negatively correlated with its corresponding third power; that is, the lower the third power corresponding to the first transmission layer, the higher its priority; and vice versa.

[0261] In this way, the remaining power can be preferentially allocated to the third transmission layer with lower power. If the communication quality of the corresponding third transmission layer with lower power is better than that of the corresponding third transmission layer with higher power, the signal-to-noise ratio of the transmission layer with better communication quality can be further reduced, thereby further improving communication performance.

[0262] In one possible implementation, when N is greater than or equal to 2 (i.e., there are multiple second transmission layers), if the third power corresponding to the i1th second transmission layer is greater than or equal to the third power corresponding to the i2th second transmission layer, then the target power corresponding to the i1th second transmission layer is equal to the third power corresponding to the i1th second transmission layer, and the target power corresponding to the i2th second transmission layer is less than or equal to the third power corresponding to the i2th second transmission layer. i1 ≠ i2, and i1 and i2 are both positive integers less than Q.

[0263] The following combines transport layers 1 to 4 and the spatial vector v l,m v l′,m′ v l″,m″ For example, the total power supported by the second communication device is 4p0. If transport layer 1 to transport layer 4 correspond sequentially to the spatial vector v... l,m v l′,m′ v l″,m″ and v l″′,m″′ v l,m v l′,m′ v l″,m″ and v l″′,m″′ The corresponding scaling factors are 1, ... The correspondence between the transmission layer, spatial vector, first scaling factor, second scaling factor, first power, second power, third power and target power is shown in Table 9 below.

[0264] Table 9

[0265]

[0266] As shown in Table 9, among transport layers 1 to 4, transport layers 1, 2, and 3 are the first transport layers, and transport layer 4 is the third transport layer. Transport layer 4 has... The power margin. The magnitude of the third power corresponding to each of transmission layers 1 to 3 is as follows: the third power corresponding to transmission layer 3 < the third power corresponding to transmission layer 2 < the third power corresponding to transmission layer 1. Therefore, it can be seen that the priority of transmission layer 3 is higher than the priority of transmission layer 2 and transmission layer 1, and the priority of transmission layer 2 is higher than the priority of transmission layer 1. Therefore, the power margin allocation order on transmission layer 4 is as follows: transmission layer 3, transmission layer 2, transmission layer 1. For transmission layer 3, it can increase... The power, i.e. the target power of transmission layer 3, can be In this case, the power that can be increased on transport layer 2 is That is, the target power on transmission layer 2 is

[0267] Alternatively, when N=1, i.e., there is one second transmission layer, the third power corresponding to the second transmission layer is greater than or equal to the third power corresponding to the second transmission layer.

[0268] In some other possible implementations, the target power corresponding to each of the N second transmission layers is determined according to the priority of each second transmission layer, and the priority of each second transmission layer is positively correlated with the third power corresponding to each second transmission layer.

[0269] In other words, the higher the third power corresponding to the second transmission layer, the higher the priority of that second transmission layer; conversely, the lower the third power corresponding to the second transmission layer, the lower the priority of that second transmission layer. It should be understood that for M first transmission layers, the priority of each first transmission layer is positively correlated with its corresponding third power; that is, the higher the third power corresponding to a first transmission layer, the higher its priority; and the lower the third power corresponding to a first transmission layer, the lower its priority.

[0270] In this case, the implementation of the target power of each of the M first transmission layers can refer to the relevant introduction when the priority of each second transmission layer is negatively correlated with the third power corresponding to each second transmission layer, and will not be repeated here.

[0271] In Method 2.7, the target power corresponding to the kth transmission layer in the K transmission layers is positively correlated with the first scaling factor of the spatial vector associated with the kth transmission layer.

[0272] In this way, by allocating power on each transmission layer according to the third power distribution, the second communication device can communicate with the total power supported by the second communication device, thereby reducing the signal-to-noise ratio and improving communication performance.

[0273] Optionally, the target power corresponding to the kth transmission layer in the K transmission layers is positively correlated with the square of the first scaling factor of the spatial vector associated with the kth transmission layer.

[0274] For example, the target power corresponding to the k-th transmission layer in K transmission layers is determined based on the first proportion corresponding to the k-th transmission layer. The first proportion corresponding to the k-th transmission layer is the proportion of the square of the first proportion factor of the spatial domain vector associated with the k-th transmission layer in the sum of the squares of the first proportion factors of the spatial domain vectors associated with each of the K transmission layers.

[0275] In some cases, the target power corresponding to the kth transmission layer among the K transmission layers satisfies the relationship shown in the following formula (11):

[0276]

[0277] Among them, P d,k Let s be the target power corresponding to the k-th transmission layer out of K transmission layers. K,k Let u be the first scaling factor of the spatial vector associated with the k-th transport layer out of the K transport layers, where u is a positive integer less than or equal to K, and k is a positive integer less than or equal to K.

[0278] The following combines transport layers 1 to 4 and the spatial vector v l,m v l′,m′ v l″,m″ For example, the total power supported by the second communication device is 4p0.

[0279] For example, if transport layer 1 to transport layer 4 correspond to the spatial vector v respectively l,m v l′,m′ v l″,m″ and v l″′,m″′ v l,m v l′,m′ v l″,m″ and v l″′,m″′ The corresponding scaling factors are 1, ... The correspondence between the transmission layer, spatial vector, first scaling factor, second scaling factor, first power, second power, third power, and target power is shown in Table 10 below. Combining this with formula (11), the target power of each of the K transmission layers can be obtained.

[0280] Table 10

[0281]

[0282] For example, if transport layer 1 to transport layer 4 correspond to the spatial vector v respectively... l,m v l′,m′ v l″,m″ and v l″′,m″′ vl,m v l′,m′ v l″,m″ and v l″′,m″′ The corresponding scaling factors are 1, 1, and 1 respectively. The correspondence between the transmission layer, spatial vector, first scaling factor, second scaling factor, first power, second power, third power, and target power is shown in Table 11 below. Similarly, by combining formula (11), the target power of each of the K transmission layers can be obtained.

[0283] Table 11

[0284]

[0285] In Method 2.8, the target power corresponding to the k-th transmission layer is positively correlated with the third power corresponding to the m-th transmission layer. That is, the larger the third power corresponding to the k-th transmission layer, the larger the target power corresponding to the k-th transmission layer; conversely, the smaller the third power corresponding to the k-th transmission layer, the smaller the target power. The third power corresponding to the k-th transmission layer is determined based on the number of K transmission layers, the first scaling factor of the spatial vector associated with the k-th transmission layer, and the total number of transmission layers in the K transmission layers that correspond to the same spatial vector as the k-th transmission layer.

[0286] In other words, the target power corresponding to the k-th transmission layer is positively correlated with the second scaling factor of the m-th transmission layer. That is, the larger the second scaling factor of the k-th transmission layer, the larger the target power corresponding to the k-th transmission layer; the smaller the second scaling factor of the k-th transmission layer, the smaller the target power corresponding to the k-th transmission layer.

[0287] For example, the target power corresponding to the kth transmission layer in K transmission layers is determined based on the second proportion corresponding to the kth transmission layer. The second proportion corresponding to the kth transmission layer is the proportion of the second proportion factor of the kth transmission layer in the sum of the second proportion factors of each of the K transmission layers. The target power corresponding to the kth transmission layer in K transmission layers satisfies the relationship shown in the following formula (12):

[0288]

[0289] Among them, s K,k s is the first scaling factor of the spatial vector associated with the k-th transport layer out of K transport layers. K,w r is the first scaling factor of the spatial vector associated with the k-th transport layer out of K transport layers. K,k Let w be the total number of transport layers associated with the k-th transport vector out of K transport vectors, sharing the same spatial domain vector. w is a positive integer less than or equal to K. K,wThis represents the total number of transport layers associated with the w-th transport vector among K transport vectors, all of which belong to the same spatial domain vector.

[0290] In this way, by allocating power on each transmission layer according to the third power distribution, the second communication device can communicate with the total power supported by the second communication device, thereby reducing the signal-to-noise ratio and improving communication performance.

[0291] The following combines transport layers 1 to 4 and the spatial vector v l,m v l′,m′ v l″,m″ For example, the total power supported by the second communication device is 4p0. If transport layer 1 to transport layer 4 correspond sequentially to the spatial vector v... l,m v l′,m′ v l″,m″ and v l″′,m″′ v l,m v l′,m′ v l″,m″ and v l″′,m″′ The corresponding scaling factors are 1, ... The correspondence between the transmission layer, spatial vector, first scaling factor, second scaling factor, first power, second power, third power, and target power is shown in Table 12 below. Combining formula (12), the target power of each of the K transmission layers can be obtained.

[0292] Table 12

[0293]

[0294] based on Figure 6 The provided communication method allows a first communication device to send first information to a second communication device to identify N second transmission layers out of M first transmission layers, and to receive data from the N transmission layers of the second communication device, as described above, in the form of second information. The second information is generated when the second communication device, supporting power boosting, allocates power margins (such as the sum of the first power differences corresponding to the Q third transmission layers) from transmission layers with available power margins to other transmission layers that can support power boosting (such as the aforementioned second transmission layers). This allows power margins to be allocated to the transmission layers indicated by the first communication device. For example, the power margins can be allocated to transmission layers with better channel quality or better associated spatial vector transmission conditions among the K transmission layers, thereby improving communication performance.

[0295] Understandable. Figure 6 The provided methods may also include:

[0296] S605, the second communication device sends channel measurement configuration information. Correspondingly, the first communication device receives the channel measurement configuration information.

[0297] For information on implementing channel measurement configuration information, please refer to [link / reference]. Figure 5 The provided method includes a description of the channel measurement configuration information. For the implementation of S605, please refer to the description of S501. It will not be repeated here.

[0298] S606, the second communication device transmits a reference signal. Correspondingly, the first communication device receives the reference signal.

[0299] S607, the first communication device sends a CSI. Correspondingly, the second communication device receives the CSI.

[0300] The CSI is determined based on the reference signal. The CSI includes information indicating the spatial vectors associated with the K transport layers. It is understood that the CSI may also include other possible information, which will not be elaborated here.

[0301] For the implementation of CSI, K transport layers, and the spatial vector associated with K transport layers, please refer to the relevant introduction in S503. For the implementation of S601, please refer to the relevant introduction in S504. It will not be elaborated here.

[0302] It should be understood that the power margin allocation methods listed in the embodiments of this application are for illustrative purposes only. In actual implementation, there may be other allocation methods, which will not be elaborated here.

[0303] The above combination Figure 6 The communication method provided in the embodiments of this application is described in detail below. Figures 7-8 This document describes in detail the communication apparatus used to perform the communication method provided in the embodiments of this application.

[0304] For example, Figure 7 This is a schematic diagram of the structure of the communication device provided in the embodiments of this application. Figure 1 .like Figure 7 As shown, the communication device 700 includes a processing module 701 and a transceiver module 702. For ease of explanation, Figure 7 Only the main components of the communication device are shown.

[0305] In some embodiments, the communication device 700 may be adapted to Figure 1 In the communication system shown, the execution Figure 6 The function of the first communication device in the communication method shown.

[0306] The transceiver module 702 is used to perform the above. Figure 6 The sending and receiving functions in the provided method are executed by the processing module 701. Figure 6 The provided methods include functions other than sending and receiving.

[0307] Optionally, the transceiver module 702 may include a receiving module and a transmitting module. Figure 7 (Not shown in the image). The transceiver module is used to implement the sending and receiving functions of the communication device 700.

[0308] Optionally, the communication device 700 may also include a storage module. Figure 7 (Not shown in the image), this storage module stores programs or instructions. When the processing module 701 executes the program or instructions, it enables the communication device 700 to perform... Figure 6 The function of the first communication device in the communication method shown.

[0309] It should be understood that the processing module 701 involved in the communication device 700 can be implemented by a processor or processor-related circuit components, and can be a processor or processing unit; the transceiver module 702 can be implemented by a transceiver or transceiver-related circuit components, and can be a transceiver or transceiver unit.

[0310] It should be noted that the communication device 700 can be a terminal device, a communication module, a circuit or chip responsible for communication functions, a chip system, or other components or assemblies. This communication module, circuit or chip responsible for communication functions, chip system, or other components or assemblies can be applied in a terminal device. This application does not limit this.

[0311] Furthermore, the technical effects of the communication device 700 can be referred to separately. Figure 6 The technical effects of the communication method shown will not be elaborated here.

[0312] For example, Figure 8 Schematic diagram of the communication device provided in the embodiments of this application Figure 2 The communication device can be a terminal device or a network device, or it can be a chip (system) or other component or assembly applied to a terminal device or network device. For example... Figure 8 As shown, the communication device 800 may include a processor 801. Optionally, the communication device 800 may also include a memory 802 and / or a transceiver 803. The processor 801 is coupled to the memory 802 and the transceiver 803, for example, they may be connected via a communication bus.

[0313] The following is combined with Figure 8 A detailed description of each component of the communication device 800 is provided below:

[0314] The processor 801 is the control center of the communication device 800. It can be a single processor or a collective term for multiple processing elements. For example, the processor 801 can be one or more central processing units (CPUs), application-specific integrated circuits (ASICs), or one or more integrated circuits configured to implement the embodiments of this application, such as one or more digital signal processors (DSPs), or one or more field-programmable gate arrays (FPGAs).

[0315] Optionally, the processor 801 can perform various functions of the communication device 800 by running or executing software programs stored in the memory 802 and by calling data stored in the memory 802.

[0316] In a specific implementation, as one example, the processor 801 may include one or more CPUs, for example... Figure 8 CPU0 and CPU1 are shown in the diagram.

[0317] In a specific implementation, as one example, the communication device 800 may also include multiple processors, for example... Figure 8 The processors 801 and 804 are shown. Each of these processors can be a single-core processor or a multi-core processor. Here, "processor" can refer to one or more devices, circuits, and / or processing cores used to process data (e.g., computer program instructions).

[0318] The memory 802 is used to store the software program that executes the solution of this application, and is controlled by the processor 801 to execute it. The specific implementation method can be referred to the above method embodiment, and will not be repeated here.

[0319] Optionally, the memory 802 may be a read-only memory (ROM) or other type of static storage device capable of storing static information and instructions, random access memory (RAM) or other type of dynamic storage device capable of storing information and instructions, or electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compressed optical discs, laser discs, optical discs, digital universal optical discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer, but not limited thereto. The memory 802 may be integrated with the processor 801 or exist independently, and may be connected via the interface circuit of the communication device 800. Figure 8 (Not shown in the image) is coupled to the processor 801, but this application embodiment does not specifically limit this.

[0320] Transceiver 803 is used for communication with other communication devices. For example, if communication device 800 is a terminal device, transceiver 803 can be used to communicate with a network device or with another terminal device. As another example, if communication device 800 is a network device, transceiver 803 can be used to communicate with a terminal device or with another network device.

[0321] Alternatively, transceiver 803 may include a receiver and a transmitter. Figure 8 (Not shown separately). The receiver is used to implement the receiving function, and the transmitter is used to implement the sending function.

[0322] Optionally, the transceiver 803 can be integrated with the processor 801, or it can exist independently and be connected via the interface circuit of the communication device 800. Figure 8 (Not shown in the image) is coupled to the processor 801, but this application embodiment does not specifically limit this.

[0323] It should be noted that, Figure 8 The structure of the communication device 800 shown does not constitute a limitation on the communication device. Actual communication devices may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0324] Furthermore, the technical effects of the communication device 800 can be referred to the technical effects of the communication method described in the above method embodiments, and will not be repeated here.

[0325] It should be understood that the processor in the embodiments of this application can be a CPU, but it can also be other general-purpose processors, DSPs, ASICs, FPGAs, or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or any conventional processor, etc.

[0326] It should also be understood that the memory in the embodiments of this application can be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. Non-volatile memory can be ROM, programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), EEPROM, or flash memory. Volatile memory can be RAM, which is used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous linked dynamic random access memory (SLDRAM), and direct rambus RAM (DR RAM).

[0327] The above embodiments can be implemented, in whole or in part, by software, hardware (such as circuits), firmware, or any other combination thereof. When implemented using software, the above embodiments can be implemented, in whole or in part, in the form of a computer program product. The computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer programs are loaded or executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more sets of available media. The available medium can be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium. A semiconductor medium can be a solid-state drive.

[0328] It should be understood that the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. A and B can be singular or plural. Additionally, the character " / " in this article generally indicates an "or" relationship between the preceding and following related objects, but it can also represent an "and / or" relationship. Please refer to the context for a more accurate understanding.

[0329] In this application, "at least one" means one or more, and "more than one" means two or more. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or multiple items. For example, at least one of a, b, or c can mean: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple.

[0330] It should be understood that in the various embodiments of this application, the order of the above-mentioned processes does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0331] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0332] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0333] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0334] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0335] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0336] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, ROM, RAM, magnetic disks, or optical disks.

[0337] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A communication method, characterized in that, Applied to a first communication device, the method includes: Send first information, which is used to identify N second transport layers out of M first transport layers; The system receives second information from a second communication device. This second information includes data from the K transmission layers. The second information is obtained by the second communication device based on the target power corresponding to each of the K transmission layers and at least one spatial vector associated with each of the K transmission layers. Each of the K transmission layers corresponds to a first power and a second power. Any two transmission layers in the K transmission layers have the same first power. The second power corresponding to each transmission layer is the power corresponding to each transmission layer when the second communication device does not support power boosting. The K transmission layers include M first transmission layers and Q third transmission layers. The second power corresponding to each of the M first transmission layers is equal to the first power corresponding to each of the M first transmission layers, and the second power corresponding to each of the Q third transmission layers is less than the first power corresponding to the third transmission layer. The target power corresponding to each third transmission layer is less than or equal to the second power corresponding to each third transmission layer, and the target power corresponding to each of the N second transmission layers is greater than the first power corresponding to each second transmission layer. Each transmission layer corresponds to a first power difference, which is the power difference between the target power corresponding to each transmission layer and the first power corresponding to each transmission layer. The sum of the first power differences corresponding to each of the N second transmission layers is less than or equal to the sum of the first power differences corresponding to each of the Q third transmission layers. M, K, Q, and N are integers, K is greater than 1, M, Q, and N are greater than or equal to 1, M ≤ K, and Q ≤ K.

2. The method according to claim 1, characterized in that, The target power corresponding to each of the N second transmission layers is less than or equal to the third power corresponding to each of the N second transmission layers; the third power corresponding to the nth second transmission layer is determined based on the first power corresponding to the nth second transmission layer, the number of the K transmission layers, the first scaling factor of the spatial vector associated with the nth second transmission layer, and the number of transmission layers in the K transmission layers that correspond to the same spatial vector as the nth second transmission layer.

3. The method according to claim 1 or 2, characterized in that, The first information includes the index of the spatial vector corresponding to each of the N second transport layers.

4. The method according to claim 3, characterized in that, The target power corresponding to each of the N second transmission layers is related to the priority of each second transmission layer.

5. The method according to claim 4, characterized in that, The priority of each second transport layer corresponds to the order of the indices of the spatial vectors corresponding to each second transport layer in the first information.

6. The method according to claim 4, characterized in that, The method further includes: Send a fourth message; the fourth message is used to indicate the priority of each of the N second transport layers.

7. The method according to claim 1 or 3, characterized in that, The method further includes: Send a third message; the third message is used to indicate the first power boost factor corresponding to each of the N second transmission layers, and the first power boost factor corresponding to each second transmission layer is used to determine the target power corresponding to the second transmission layer.

8. A communication method, characterized in that, Applied to a second communication device, the method includes: Receive first information, which is used to determine N second transport layers out of M first transport layers; Second information is transmitted based on the target power corresponding to each of the K transport layers and at least one spatial vector associated with the K transport layers; the second information includes data of the K transport layers, each of the K transport layers corresponds to a first power and a second power; the first power corresponding to any two of the K transport layers is the same, and the second power corresponding to each transport layer is the power corresponding to each transport layer when the second communication device does not support power boosting; the K transport layers include the M first transport layers and Q third transport layers, the second power corresponding to each of the M first transport layers is equal to the first power corresponding to each of the first transport layers, and the second power corresponding to each of the Q third transport layers is less than the first power corresponding to the third transport layer; The target power corresponding to each third transmission layer is less than or equal to the second power corresponding to each third transmission layer, and the target power corresponding to each of the N second transmission layers is greater than the first power corresponding to each second transmission layer. Each transmission layer corresponds to a first power difference, which is the power difference between the target power corresponding to each transmission layer and the first power corresponding to each transmission layer. The sum of the first power differences corresponding to each of the N second transmission layers is less than or equal to the sum of the first power differences corresponding to each of the Q third transmission layers. M, K, Q, and N are integers, K is greater than 1, M, Q, and N are greater than or equal to 1, M ≤ K, and Q ≤ K.

9. The method according to claim 8, characterized in that, The target power corresponding to each of the N second transmission layers is less than or equal to the third power corresponding to each of the N second transmission layers; the third power corresponding to the nth second transmission layer is determined based on the first power corresponding to the nth second transmission layer, the number of the K transmission layers, the first scaling factor of the spatial vector associated with the nth second transmission layer, and the number of transmission layers in the K transmission layers that correspond to the same spatial vector as the nth second transmission layer.

10. The method according to claim 8 or 9, characterized in that, The first information includes the index of the spatial vector corresponding to each of the N second transport layers.

11. The method according to claim 10, characterized in that, The target power corresponding to each of the N second transmission layers is related to the priority of each second transmission layer.

12. The method according to claim 10, characterized in that, The priority of each second transport layer corresponds to the order of the indices of the spatial vectors corresponding to each second transport layer in the first information.

13. The method according to claim 10, characterized in that, The method further includes: Receive fourth information; the fourth information is used to indicate the priority of each of the N second transport layers.

14. The method according to claim 8 or 9, characterized in that, The method further includes: Receive third information; the third information is used to indicate the first power boost factor corresponding to each of the N second transmission layers, and the first power boost factor corresponding to each second transmission layer is used to determine the target power corresponding to the second transmission layer.

15. The method according to claim 7 or 14, characterized in that, The first power boost factor corresponding to each second transport layer is one of a plurality of candidate power boost factors.

16. The method according to claim 7 or 15, characterized in that, The third information includes a first difference between the first power boost factor corresponding to the nth second transmission layer out of N second transmission layers and the first scaling factor corresponding to the nth second transmission layer.

17. The method according to claim 7 or 15, characterized in that, Each of the N second transmission layers corresponds to a first parameter. The first parameter corresponding to the nth second transmission layer is determined based on the second parameter and the first difference corresponding to the nth second transmission layer. The first difference corresponding to the nth second transmission layer is the difference between the first power boost factor corresponding to the nth second transmission layer and the first scaling factor corresponding to the nth second transmission layer. The first parameter is an integer, and the second parameter is a constant. The number of bits occupied by the first parameter corresponding to the nth second transmission layer is less than the number of bits occupied by the scaling factor corresponding to the nth second transmission layer. The third information includes the first parameter corresponding to each of the N second transmission layers.

18. The method according to claim 7 or 15, characterized in that, There is a correspondence between the scaling factor of the transmission layer and the binary value. The third information includes the binary value corresponding to the first power boost factor of each of the N second transmission layers.

19. A communication device, characterized in that, The communication device includes a module for performing the method as described in any one of claims 1-18.

20. A communication device, characterized in that, include: Processor and interface circuits; among which, The interface circuit is used to receive code instructions and transmit them to the processor; The processor is used to run the code instructions to perform the method as described in any one of claims 1-18.

21. A communication device, characterized in that, The communication device includes a processor and a transceiver, the transceiver being used for information exchange between the communication device and other communication devices, and the processor executing code instructions to perform the method as described in any one of claims 1-18.

22. A communication device, characterized in that, include: A processor for performing the method as described in any one of claims 1-18.

23. The communication device according to any one of claims 19-21, characterized in that, The communication device further includes a memory for storing code instructions relating to the method as described in any one of claims 1-18.

24. The communication device according to any one of claims 19-22, characterized in that, The communication device is a chip.

25. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes a computer program or instructions that, when executed on a computer, cause the computer to perform the method as described in any one of claims 1-18.

26. A computer program product, characterized in that, The computer program product includes: a computer program or instructions that, when run on a computer, cause the computer to perform the method as described in any one of claims 1-18.

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