Communication method and related apparatus

Abstract

The present application relates to the technical field of wireless communications, and in particular to a communication method and a related apparatus. The method comprises: receiving target information from a first network device, wherein the target information is used for indicating a correction parameter; and determining a target transmit power for sending a target signal to a second network device, wherein the target transmit power is determined on the basis of a downlink path loss correction result, the downlink path loss correction result is determined by the correction parameter and a downlink path loss estimation result, and the downlink path loss estimation result is determined by a path loss compensation factor configured by the first network device and / or a downlink path loss estimation value measured by a terminal device on the basis of a downlink reference signal of the first network device. By using the method, the determined target transmit power can be more reasonable.

Description

A communication method and related device

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on December 15, 2023, with application number 202311735214.9 and application name “A communication method and related device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of wireless communication technology, and in particular to a communication method and related devices. Background Art

[0003] With the rise of new network services such as live video streaming, improving the capacity of uplink and downlink channels has become a research hotspot. To this end, a dense deployment scheme of transmission reception points (TRPs) with only uplink reception capabilities has been proposed to achieve an improvement in uplink capacity. This TRP can also be called a single uplink TRP, which can be understood as a small station with only uplink reception capabilities and no downlink transmission capabilities. It should be understood that a single uplink TRP is generally associated with a network device for use, and the terminal device can achieve downlink reception through this network device.

[0004] During the uplink transmission and reception process, the terminal device needs to appropriately adjust the transmission power of the uplink signal to compensate for the effects of path loss and shadow fading. In the prior art, the terminal device adjusts the transmission power of the uplink signal based on the path loss obtained by measuring the downlink path loss reference signal of the network device associated with the single uplink TRP. However, the path loss between the terminal device and the single uplink TRP is often different from the path loss between the terminal device and the network device associated with the single uplink TRP. Therefore, the above-mentioned method may easily cause the adjusted transmission power to be too high or too low, thereby making the interference within the communication system more serious and affecting the communication quality. Summary of the Invention

[0005] In order to solve the above problems, the present application provides a communication method and related apparatus, which can enable a terminal device to determine a more reasonable uplink transmission power.

[0006] The present application is introduced below from multiple aspects. It is easy to understand that the implementation methods of the following multiple aspects can refer to each other.

[0007] In a first aspect, the present application provides a communication method applicable to a terminal device. The method comprises: receiving target information from a first network device, wherein the target information is used to indicate a correction parameter. Determining a target transmit power for sending a target signal to a second network device, wherein the target transmit power is determined based on a downlink path loss correction result, the downlink path loss correction result is determined by the correction parameter and a downlink path loss estimation result, and the downlink path loss estimation result is determined by a path loss compensation factor configured by the first network device and / or a downlink path loss estimation value obtained by the terminal device based on a downlink reference signal measurement of the first network device.

[0008] In the above implementation, the terminal device will correct the downlink path loss estimation result in combination with the correction parameters configured by the first network device, which makes the target transmission power determined by it more reasonable and reliable, and can more effectively compensate for the effects of path loss and shadow fading. Using the method provided by the present application to determine the uplink transmission power for a single uplink TRP can solve the problem that the transmission power determined by the existing solution may be too high or too low, and can ensure the transmission quality of the uplink between the terminal device and the single uplink TRP.

[0009] In a second aspect, the present application provides a communication method applicable to a first network device. The method includes: determining target information for indicating correction parameters. The correction parameters and a downlink path loss estimation result are used to determine a downlink path loss correction result, the downlink path loss correction result is used to determine a target transmit power for a target signal sent by a terminal device to a second network device, and the downlink path loss estimation result is determined by a path loss compensation factor configured by the first network device and / or a downlink path loss estimation value obtained by the terminal device based on a downlink reference signal measurement of the first network device. The target information is sent to the terminal device.

[0010] In combination with at least one of the first aspect and the second aspect, in a possible implementation, the correction parameter includes a first correction parameter, and the downlink path loss correction result satisfies the following formula: X =α×(PL+PL offset )

[0011] Among them, P X is the downlink path loss correction result, α is the path loss compensation factor, PL is the downlink path loss estimation value, PL offset is the first correction parameter.

[0012] In combination with at least one of the first aspect and the second aspect, in a possible implementation, the correction parameter includes a first correction parameter, and the downlink path loss correction result satisfies the following formula: X =PL+PL offset

[0013] Among them, P X is the downlink path loss correction result, PL is the downlink path loss estimation value, PL offset is the first correction parameter.

[0014] In combination with at least one of the first aspect and the second aspect, in a possible implementation, the second network device is a single uplink device and the first network device and the second network device do not perform joint reception, or the second network device is a single uplink device, the terminal device only performs uplink communication with the second network device, and the signal reception quality of the second network device is higher than the signal reception quality of the first network device, PL offset The value of is less than 0.

[0015] In combination with at least one of the first and second aspects, in one possible implementation, the second network device is a single uplink device, the first network device and the second network device perform joint reception, and the propagation loss between the terminal device and the first network device is less than the transmission loss between the terminal device and the second network device; or, the second network device is a single uplink device and the terminal device performs uplink communication with the first network device and the second network device simultaneously, PL offset The value of is greater than 0.

[0016] In combination with at least one of the first aspect and the second aspect, in a possible implementation manner, the second network device is a non-single uplink device, or the second network device and the first network device are the same device, or the second network device is a single uplink device, the terminal device only performs uplink communication with the first network device, and the signal reception quality of the first network device is higher than the signal reception quality of the second network device, PL offset The value of is 0.

[0017] In combination with at least one of the first aspect and the second aspect, in a possible implementation, the correction parameter includes a second correction parameter, and the downlink path loss correction result satisfies the following formula: X =α×PL×β PL

[0018] Among them, P Xis the downlink path loss correction result, α is the path loss compensation factor, PL is the downlink path loss estimation value, β PL is the second correction parameter.

[0019] In combination with at least one of the first aspect and the second aspect, in a possible implementation, the correction parameter includes a second correction parameter, and the downlink path loss correction result satisfies the following formula: X =PL×β PL

[0020] Among them, P X is the downlink path loss correction result, PL is the downlink path loss estimation value, β PL is the second correction parameter.

[0021] In combination with at least one of the first aspect and the second aspect, in one possible implementation, the second network device is a single uplink device and the first network device and the second network device do not perform joint reception, or the second network device is a single uplink device, the terminal device only performs uplink communication with the second network device, and the signal reception quality of the second network device is higher than the signal reception quality of the first network device, β PL The value is greater than 0 and less than 1.

[0022] In combination with at least one of the first and second aspects, in one possible implementation, the second network device is a single uplink device, the first network device and the second network device perform joint reception, and the propagation loss between the terminal device and the first network device is less than the transmission loss between the terminal device and the second network device, or the second network device is a single uplink device and the terminal device performs uplink communication with the first network device and the second network device at the same time, β PL The value of is greater than 1.

[0023] In combination with at least one of the first aspect and the second aspect, in one possible implementation, the second network device is a non-single uplink device, or the second network device and the first network device are the same device, or the second network device is a single uplink device, the terminal device only performs uplink communication with the first network device, and the signal reception quality of the first network device is higher than the signal reception quality of the second network device, β PL The value of is 1.

[0024] In combination with at least one of the first aspect and the second aspect, in a possible implementation, the correction parameter includes a first correction parameter and a second correction parameter, and the downlink path loss correction result satisfies the following formula: X=α×PL+PL offset ×β PL

[0025] Among them, P X is the downlink path loss correction result, α is the path loss compensation factor, PL is the downlink path loss estimation value, PL offset is the first correction parameter, β PL is the second correction parameter.

[0026] In combination with at least one of the first aspect and the second aspect, in a possible implementation, the correction parameter includes a first correction parameter and a second correction parameter, and the downlink path loss correction result satisfies the following formula: X =PL+PL offset ×β PL

[0027] Among them, P X is the downlink path loss correction result, PL is the downlink path loss estimation value, PL offset is the first correction parameter, β PL is the second correction parameter.

[0028] In combination with at least one of the first aspect and the second aspect, in one possible implementation, the second network device is a single uplink device and the first network device and the second network device do not perform joint reception, or the second network device is a single uplink device, the terminal device only performs uplink communication with the second network device, and the signal reception quality of the second network device is higher than the signal reception quality of the first network device, β PL The value of PL is greater than 0 and less than 1. offset The value of is less than 0.

[0029] In combination with at least one of the first and second aspects, in one possible implementation, the second network device is a single uplink device, the first network device and the second network device perform joint reception, and the propagation loss between the terminal device and the first network device is less than the transmission loss between the terminal device and the second network device, or the second network device is a single uplink device and the terminal device performs uplink communication with the first network device and the second network device at the same time, β PL The value of PL is greater than 1. offset The value of is greater than 0.

[0030] In combination with at least one of the first aspect and the second aspect, in one possible implementation, the second network device is a non-single uplink device, or the second network device and the first network device are the same device, or the second network device is a single uplink device, the terminal device only performs uplink communication with the first network device, and the signal reception quality of the first network device is higher than the signal reception quality of the second network device, β PL The value of PL is 1, offset The value of is 0.

[0031] In combination with at least one of the first aspect to the second aspect, in a possible implementation method, the correction parameter is determined by the difference in path loss from the terminal device to the first network device and the path loss from the terminal device to the second network device, and / or the path loss ratio from the terminal device to the first network device and the path loss from the terminal device to the second network device.

[0032] In a third aspect, the present application provides a communication device, which may be the terminal device mentioned in the first aspect. The communication device includes a transceiver unit and a processing unit. The transceiver unit is used to receive target information from a first network device. The target information is used to indicate a correction parameter. The processing unit is used to determine a target transmit power for sending a target signal to a second network device, wherein the target transmit power is determined based on a downlink path loss correction result, the downlink path loss correction result is determined by the correction parameter and a downlink path loss estimation result, and the downlink path loss estimation result is determined by a path loss compensation factor configured by the first network device and / or a downlink path loss estimation value obtained by the terminal device based on a downlink reference signal measurement of the first network device.

[0033] In a fourth aspect, the present application provides a communication device, which may be the first network device mentioned in the second aspect. The communication device includes a transceiver unit and a processing unit. The processing unit is used to determine target information for indicating correction parameters. The correction parameters and the downlink path loss estimation result are used to determine the downlink path loss correction result, and the downlink path loss correction result is used to determine the target transmission power of the terminal device to send a target signal to the second network device, and the downlink path loss estimation result is determined by the path loss compensation factor configured by the first network device and / or the downlink path loss estimation value obtained by the terminal device based on the downlink reference signal measurement of the first network device. The transceiver unit is used to send the target information to the terminal device.

[0034] In combination with at least one of the third aspect to the fourth aspect, in a possible implementation manner, the correction parameter includes a first correction parameter, and the downlink path loss correction result satisfies the following formula: X =α×(PL+PL offset )

[0035] Among them, P X is the downlink path loss correction result, α is the path loss compensation factor, PL is the downlink path loss estimation value, PL offset is the first correction parameter.

[0036] In combination with at least one of the third aspect to the fourth aspect, in a possible implementation manner, the correction parameter includes a first correction parameter, and the downlink path loss correction result satisfies the following formula: X =PL+PL offset

[0037] Among them, P X is the downlink path loss correction result, PL is the downlink path loss estimation value, PL offset is the first correction parameter.

[0038] In combination with at least one of the third aspect to the fourth aspect, in a possible implementation manner, the second network device is a single uplink device and the first network device and the second network device do not perform joint reception, or the second network device is a single uplink device, the terminal device only performs uplink communication with the second network device, and the signal reception quality of the second network device is higher than the signal reception quality of the first network device, PL offset The value of is less than 0.

[0039] In combination with at least one of the third aspect to the fourth aspect, in one possible implementation, the second network device is a single uplink device, the first network device and the second network device perform joint reception, and the propagation loss between the terminal device and the first network device is less than the transmission loss between the terminal device and the second network device, or the second network device is a single uplink device and the terminal device performs uplink communication with the first network device and the second network device at the same time, PL offset The value of is greater than 0.

[0040] In combination with at least one of the third aspect to the fourth aspect, in a possible implementation manner, the second network device is a non-single uplink device, or the second network device and the first network device are the same device, or the second network device is a single uplink device, the terminal device only performs uplink communication with the first network device, and the signal reception quality of the first network device is higher than the signal reception quality of the second network device, PL offset The value of is 0.

[0041] In combination with at least one of the third aspect to the fourth aspect, in a possible implementation, the correction parameter includes a second correction parameter, and the downlink path loss correction result satisfies the following formula: X =α×PL×β PL

[0042] Among them, P X is the downlink path loss correction result, α is the path loss compensation factor, PL is the downlink path loss estimation value, β PL is the second correction parameter.

[0043] In combination with at least one of the third aspect to the fourth aspect, in a possible implementation, the correction parameter includes a second correction parameter, and the downlink path loss correction result satisfies the following formula: X =PL×β PL

[0044] Among them, P X is the downlink path loss correction result, PL is the downlink path loss estimation value, β PL is the second correction parameter.

[0045] In combination with at least one of the third aspect to the fourth aspect, in one possible implementation, the second network device is a single uplink device and the first network device and the second network device do not perform joint reception, or the second network device is a single uplink device, the terminal device only performs uplink communication with the second network device, and the signal reception quality of the second network device is higher than the signal reception quality of the first network device, β PL The value is greater than 0 and less than 1.

[0046] In combination with at least one of the third aspect to the fourth aspect, in one possible implementation, the second network device is a single uplink device, the first network device and the second network device perform joint reception, and the propagation loss between the terminal device and the first network device is less than the transmission loss between the terminal device and the second network device, or the second network device is a single uplink device and the terminal device performs uplink communication with the first network device and the second network device at the same time, β PL The value of is greater than 1.

[0047] In combination with at least one of the third aspect to the fourth aspect, in one possible implementation, the second network device is a non-single uplink device, or the second network device and the first network device are the same device, or the second network device is a single uplink device, the terminal device only performs uplink communication with the first network device, and the signal reception quality of the first network device is higher than the signal reception quality of the second network device, β PL The value of is 1.

[0048] In combination with at least one of the third aspect to the fourth aspect, in a possible implementation, the correction parameter includes a first correction parameter and a second correction parameter, and the downlink path loss correction result satisfies the following formula: X =α×PL+PL offset ×β PL

[0049] Among them, P X is the downlink path loss correction result, α is the path loss compensation factor, PL is the downlink path loss estimation value, PL offset is the first correction parameter, β PL is the second correction parameter.

[0050] In combination with at least one of the third aspect to the fourth aspect, in a possible implementation, the correction parameter includes a first correction parameter and a second correction parameter, and the downlink path loss correction result satisfies the following formula: X =PL+PL offset ×β PL

[0051] Among them, P X is the downlink path loss correction result, PL is the downlink path loss estimation value, PL offset is the first correction parameter, β PL is the second correction parameter.

[0052] In combination with at least one of the third aspect to the fourth aspect, in one possible implementation, the second network device is a single uplink device and the first network device and the second network device do not perform joint reception, or the second network device is a single uplink device, the terminal device only performs uplink communication with the second network device, and the signal reception quality of the second network device is higher than the signal reception quality of the first network device, β PL The value of PL is greater than 0 and less than 1. offset The value of is less than 0.

[0053] In combination with at least one of the third aspect to the fourth aspect, in one possible implementation, the second network device is a single uplink device, the first network device and the second network device perform joint reception, and the propagation loss between the terminal device and the first network device is less than the transmission loss between the terminal device and the second network device, or the second network device is a single uplink device and the terminal device performs uplink communication with the first network device and the second network device at the same time, β PL The value of PL is greater than 1. offset The value of is greater than 0.

[0054] In combination with at least one of the third aspect to the fourth aspect, in one possible implementation, the second network device is a non-single uplink device, or the second network device and the first network device are the same device, or the second network device is a single uplink device, the terminal device only performs uplink communication with the first network device, and the signal reception quality of the first network device is higher than the signal reception quality of the second network device, β PL The value of PL is 1, offset The value of is 0.

[0055] In combination with at least one of the third to fourth aspects, in a possible implementation, the correction parameter is determined by the difference in path loss from the terminal device to the first network device and from the terminal device to the second network device, and / or the ratio of the path loss from the terminal device to the first network device and from the terminal device to the second network device.

[0056] In a fifth aspect, the present application provides a computer program product comprising instructions, which, when executed on a computer, cause the computer to execute the method of the first aspect or any possible implementation of the first aspect, or to execute the method of the second aspect or any possible implementation of the second aspect.

[0057] In a sixth aspect, the present application provides a computer-readable storage medium, which stores a computer program. When the computer program is executed, it is used to execute the method in the first aspect or any possible implementation of the first aspect, or to execute the method in the second aspect or any possible implementation of the second aspect.

[0058] In a seventh aspect, the present application provides a communication device, at least one processor, and a memory. The memory is configured to store a computer program. The processor is configured to execute the computer program stored in the memory, causing the communication device to perform the method of the first aspect or any possible implementation of the first aspect, or the method of the second aspect or any possible implementation of the second aspect.

[0059] In an eighth aspect, an embodiment of the present application provides a chip comprising a processor and an interface, wherein the input and output interfaces are used to exchange information or data, and the processing circuit is used to run instructions so that a device on which the chip is installed executes the method of the first aspect or any possible implementation of the first aspect, or executes the method of the second aspect or any possible implementation of the second aspect.

[0060] Ninthly, the present application provides a chip system, which includes a processor for supporting a device on which the chip system is installed to implement the method in the first aspect or any possible implementation of the first aspect, or to implement the method in the second aspect or any possible implementation of the second aspect. For example, the data and / or information involved in the above method is generated or processed. In one possible design, the chip system also includes a memory for storing program instructions and data necessary for the data sending device. The chip system can be composed of chips, or it can include chips and other discrete devices.

[0061] In the tenth aspect, the present application provides a communication system, which includes a terminal device having functions for implementing the methods and various possible designs of the above-mentioned first aspect and a plurality of network devices having functions for implementing the methods and various possible designs of the above-mentioned second aspect.

[0062] In the communication method provided in the present application, the terminal device can correct the downlink path loss estimation result based on the correction parameters provided by the first network device to obtain a downlink path loss correction result, and further determine a more reasonable target transmission power based on the downlink path loss correction result. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] FIG1 is a schematic structural diagram of a communication system provided by the present application;

[0064] FIG2 is a flow chart of a communication method provided by the present application;

[0065] FIG3 is a schematic structural diagram of a communication device provided by the present application;

[0066] FIG4 is a schematic structural diagram of another communication device provided by the present application;

[0067] FIG5 is a schematic structural diagram of another communication device provided in the present application. DETAILED DESCRIPTION

[0068] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the accompanying drawings provided in the embodiments of the present application.

[0069] In the various embodiments of the present application, unless otherwise specified or there is a logical conflict, the terms and / or descriptions between different embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationships.

[0070] In this application, "at least one" means one or more, and "more" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. In the text description of this application, the character " / " generally indicates that the previous and next associated objects are in an "or" relationship; in the formula of this application, the character " / " indicates that the previous and next associated objects are in a "division" relationship. "Including at least one of A, B and C" can mean: including A; including B; including C; including A and B; including A and C; including B and C; including A, B and C.

[0071] It is understood that the various numbers used in the embodiments of this application are merely for ease of description and are not intended to limit the scope of the embodiments of this application. The order of the sequence numbers of the above-mentioned processes does not necessarily imply a specific order of execution; the order of execution of the processes should be determined by their functions and inherent logic.

[0072] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Long Term Evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD), Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication system, fifth generation (5G) system or new radio (NR). In addition, it can also be applicable to subsequent evolution systems, such as the sixth generation 6G communication system and even the more advanced seventh generation 7G communication system.

[0073] The network device in the embodiment of the present application can be a device for communicating with a terminal device, can be a base station, or an access point, or a network device, or can refer to a device in an access network that communicates with a wireless terminal through one or more sectors on the air interface. The network device can be used to convert received air frames into IP packets and act as a router between the wireless terminal and the rest of the access network, where the rest of the access network may include an Internet Protocol (IP) network. The network device can also coordinate the attribute management of the air interface. For example, the network device can be an evolved NodeB (eNB or eNodeB) in an LTE system, or a wireless controller in a cloud radio access network (CRAN) scenario, or the access device can be a relay station, an access point, an in-vehicle device, a wearable device, an access device in a 5G network, or a network device in a future evolved PLMN network, etc. It can be an access point (AP) in a WLAN, or a gNB in ​​a new radio (NR) system. The embodiment of the present application is not limited. It should be noted that for a 5G system, there may be one or more transmission reception points (TRPs) under a base station, and all TRPs belong to the same macro cell, which is managed by the base station. Each TRP and terminal device can use the communication method of the embodiment of the present application.

[0074] In addition, in the embodiments of the present application, the network device may be a device in a radio access network (RAN), or in other words, a RAN node that connects a terminal device to a wireless network. For example, as an example and not a limitation, the network device may include: gNB, TRP, evolved Node B (eNB), radio network controller (RNC), Node B (NB), base station controller (BSC), base transceiver station (BTS), home base station (e.g., home evolved Node B, or home Node B, HNB), base band unit (BBU), or wireless fidelity (Wifi) access point (AP).

[0075] The network equipment provides services for the cell, and the terminal device communicates with the network equipment through the transmission resources used by the cell (for example, frequency domain resources, or spectrum resources). The cell can be the cell corresponding to the network equipment (for example, a base station). The cell can belong to a macro base station or a base station corresponding to a small cell. The small cells here can include: metro cells, micro cells, pico cells, femto cells, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.

[0076] The terminal device in the embodiments of the present application may also be referred to as: user equipment (UE), mobile station (MS), mobile terminal (MT), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication equipment, user agent or user device, etc.

[0077] The terminal device may be a device that provides voice / data connectivity to users, such as a handheld device or vehicle-mounted device with wireless connection function. At present, some examples of terminals are: mobile phones, tablet computers, laptop computers, PDAs, mobile internet devices (MIDs), wearable devices, virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, terminal devices in 5G networks or future evolved public land mobile communication networks (PLMNs). The terminal equipment in the network (PLMN), etc., is not limited to this in the embodiments of the present application.

[0078] As an example and not a limitation, in the embodiments of the present application, wearable devices may also be referred to as wearable smart devices, which are a general term for wearable devices that are intelligently designed and developed using wearable technology for daily wear, such as glasses, gloves, watches, clothing, and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothes or accessories. Wearable devices are not just hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include those that are fully functional, large in size, and can achieve complete or partial functions without relying on smartphones, such as smart watches or smart glasses, as well as those that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various smart bracelets and smart jewelry for vital sign monitoring.

[0079] In addition, in the embodiment of the present application, the terminal device can also be a terminal device in the Internet of Things (IoT) system. IoT is an important part of the future development of information technology. Its main technical feature is to connect objects to the network through communication technology, thereby realizing an intelligent network of human-machine interconnection and object-to-object interconnection.

[0080] In the embodiment of the present application, the terminal device may further include a relay. Alternatively, it can be understood that anything that can communicate data with a base station can be considered a terminal device.

[0081] Please refer to Figure 1, which is a schematic diagram of the structure of a communication system provided by this application. As shown in Figure 1, multiple network devices (network device 110, network device 120, and network device 130) and multiple terminal devices (terminal device 140, terminal device 150, and terminal device 160) constitute a communication system.

[0082] Optionally, multiple network devices can simultaneously serve a terminal device. For example, network device 110, network device 120, and network device 130 can simultaneously serve terminal device 150. Any two of network devices 110, 120, and 130 can exchange data and information. This communication method is called multi-station collaboration.

[0083] The network device in Figure 1 can be a base station. The network device corresponds to different devices in different systems. For example, in a 4G system, it can correspond to an eNB, and in a 5G system, it can correspond to a 5G network device, such as a gNB. The technical solution provided in this application can also be applied to future mobile communication systems. Therefore, the network device in Figure 1 can also correspond to a network device in a future mobile communication system. Figure 1 takes the network device as an example of a base station. In fact, referring to the previous description, the network device can also be a device such as an RSU.

[0084] It should be understood that the communication system shown in Figure 1 may further include more network nodes, such as other terminal devices or network devices, and the network devices or terminal devices included in the communication system shown in Figure 1 may be the various forms of network devices or terminal devices described above. The embodiments of the present application are no longer shown one by one in the figures. Similarly, the communication system architecture applicable to the embodiments of the present application described above is only an example, and the communication system architecture applicable to the embodiments of the present application is not limited thereto. Any communication system architecture that can realize the functions of the above-mentioned various devices is also applicable to the embodiments of the present application.

[0085] In the prior art, in scenarios where a single uplink TRP is densely deployed, the terminal device adjusts the transmit power of the uplink signal based on the path loss measured using the downlink path loss reference signal of the network device associated with the single uplink TRP. Since the path loss between the terminal device and the single uplink TRP is often different from the path loss between the terminal device and the network device associated with the single uplink TRP, the above-mentioned approach can easily result in the adjusted transmit power being too high or too low, thereby increasing interference within the communication system and affecting communication quality.

[0086] Therefore, the technical problem to be solved by this application is: how to reasonably determine the uplink transmission power for a single uplink TRP.

[0087] In order to solve the above technical problems, the present application provides a communication method. In this communication method, the first network device configures a correction parameter for the terminal device. The terminal device can correct the downlink path loss estimation result between the second network device and the terminal device obtained by it in combination with the correction parameter to obtain a downlink path loss correction result that is more matched with the actual downlink path loss between the second network device and the terminal device, and further calculate the target transmission power for sending the target signal to the second network device based on the downlink path loss correction result. In this communication method, since the downlink path loss estimation result is corrected in combination with the correction parameter configured by the first network device, the target transmission power finally obtained by the terminal device is more reasonable and can more effectively compensate for the effects of path loss and shadow fading. The general method is used to determine the uplink transmission power for a single uplink TRP, which can solve the problem that the determined transmission power may be too high or too low in the existing solution, and can ensure the transmission quality of the uplink between the terminal device and the single uplink TRP.

[0088] Please refer to Figure 2, which is a flow chart of a communication method provided by this application. As shown in Figure 2, the communication method provided by this application may include the following steps:

[0089] S201: A first network device determines target information for indicating a correction parameter.

[0090] In some feasible implementations, the first network device may determine a correction parameter for the terminal device to determine a target transmit power, and generate target information indicating the correction parameter. The target transmit power is the transmit power of a target signal sent by the terminal device to the second network device. It should be understood that in this embodiment of the present application, there may be one or more second network devices, and the second network devices may also include the first network device.

[0091] In a specific implementation, the first network device may first determine the path loss difference and / or path loss ratio between the terminal device and the first network device and the terminal device and the second network device, and determine the correction parameter based on the path loss difference and / or path loss ratio. The first network device may then generate target information that can be used to indicate the correction parameter.

[0092] In a first optional implementation manner, the above correction parameters may specifically include a first correction parameter.

[0093] In this case, the first network device can determine the path loss difference between the terminal device to the first network device and the terminal device to the second network device based on the prior information. The prior information includes at least the location information of the terminal device, the first network device, and the second network device. Exemplarily, the first network device can calculate the first path loss value between the first network device and the terminal device based on the location information of the first network device and the location information of the terminal device. The first network device can also calculate the second path loss value between the second network device and the terminal device based on the location information of the second network device and the location information of the terminal device, and determine the difference between the first path loss value and the second path loss value as the above-mentioned path loss difference. Furthermore, the first network device can determine the path loss difference it obtains as the above-mentioned first correction parameter.

[0094] In the above implementation, the first correction parameter is determined by the location information of the terminal device, the first network device, and the second network device. The method is simple and easy to implement.

[0095] Alternatively, the first network device may also determine the path loss difference between the terminal device and the first network device and the terminal device and the second network device based on the measurement result of the uplink reference signal. Exemplarily, the terminal device sends a sounding reference signal (SRS). The first network device can receive the SRS and measure the first reference signal level, and the second network device can also receive the SRS and measure the second reference signal level. The first network device can obtain the above-mentioned second reference signal level and determine the difference between the first reference signal level and the second reference signal level as the above-mentioned path loss difference. Furthermore, the first network device can determine the obtained path loss difference as the above-mentioned first correction parameter.

[0096] In the above implementation, the first correction parameter is determined by the measurement result of the uplink reference signal. The method is simple and can ensure that the determined second correction parameter is reasonable and reliable.

[0097] Optionally, the second network device is a single uplink device and the first network device and the second network device do not perform joint reception, or the second network device is a single uplink device, the terminal device only performs uplink communication with the second network device, and the signal reception quality of the second network device is higher than the signal reception quality of the first network device. In these cases, the first correction parameter (hereinafter referred to as PL offset The value of (instead of expression) is less than 0.

[0098] Optionally, the second network device is a single uplink device, the first network device and the second network device perform joint reception, and the propagation loss between the terminal device and the first network device is less than the transmission loss between the terminal device and the second network device; or, the second network device is a single uplink device and the terminal device performs uplink communication with the first network device and the second network device at the same time. In these cases, PL offset The value of is greater than 0.

[0099] Optionally, the second network device is not a single uplink device, or the second network device and the first network device are the same device, or the second network device is a single uplink device, the terminal device only performs uplink communication with the first network device, and the signal reception quality of the first network device is higher than the signal reception quality of the second network device. In these cases, PL offset The value of is 0.

[0100] In other words, in the scenario where there is no single uplink TRP deployment, either the target signal is sent to the first network device, or the terminal device only communicates uplink with the first network device with better signal reception quality. The terminal device can use the existing solution to adjust the uplink transmit power, so PL offset It can take a value of 0. In a general scenario where there is a single uplink TRP deployment (here the second network device is the single uplink TRP, the first network device is its associated network device, also called a macro station, and the first network device can be used for downlink reception by the terminal device), and the network device does not perform joint reception with the single uplink TRP, or when the terminal device only performs uplink communication with the second network device with better signal reception quality, since the main function of the single uplink TRP is to complete the uplink coverage, the path loss of the terminal device facing the single uplink TRP is often smaller than the path loss facing the macro station, so PL offset The value can be less than 0, so that a better compromise between macro-oriented and single uplink TRP-oriented can be achieved. In the scenario where a single uplink TRP is deployed, the single uplink TRP and the macro station are jointly received, and when the terminal is closer to the macro station, the path loss of the terminal device facing the single uplink TRP is greater than the path loss facing the macro station, or when the second network device is a single uplink device and the terminal device simultaneously performs uplink communication with the first network device and the second network device, PL offsetThe value can be greater than 0, so as to achieve a better compromise between macro-oriented and single uplink TRP. In short, the solution provided by this application can be adjusted by offset The value range of can be used to adapt to different communication scenarios, which is highly flexible.

[0101] It should be understood that the PL offset The value conditions of PL are only exemplary. In actual implementation, under other possible value conditions, offset The value range described above may also be used, and this application does not impose any limitation on this.

[0102] Optionally, in actual implementation, the first network device may offset The value of is bit quantized to obtain the quantized PL offset , and further indicates the quantized PL through target information offset . Exemplary, quantified PL offset The value range of can be [-226, 226], the step size is 2, and the unit is dB.

[0103] Alternatively, the first network device obtains the quantized PL offset After that, the quantized PL offset The value of the interval is mapped and the mapped PL is indicated by the target information offset For example, assuming the quantized PL offset The value range is [-226,226]. The first network device can convert the quantized PL offset The value of is mapped to [-113, 113] to obtain the mapped PL offset Among them, the mapped PL offset The step size can be 1, and the unit is dB.

[0104] In a second optional implementation manner, the above correction parameter may specifically include a second correction parameter.

[0105] In this case, the first network device can determine the path loss ratio between the terminal device and the first network device and the path loss ratio between the terminal device and the second network device based on the prior information. The prior information includes at least the location information of the terminal device, the first network device, and the second network device. Exemplarily, the first network device can calculate the first path loss value between the first network device and the terminal device based on the location information of the first network device and the location information of the terminal device. The first network device can also calculate the second path loss value between the second network device and the terminal device based on the location information of the second network device and the location information of the terminal device, and determine the ratio of the first path loss value to the second path loss value as the above-mentioned path loss ratio. Furthermore, the first network device can determine the obtained path loss ratio as the above-mentioned second correction parameter.

[0106] In the above implementation, the second correction parameter is determined by the location information of the terminal device, the first network device, and the second network device. The method is simple and easy to implement.

[0107] Alternatively, the first network device may also determine the path loss ratio from the terminal device to the first network device and from the terminal device to the second network device based on the measurement result of the uplink reference signal. For example, the terminal device may send a sounding reference signal (SRS). The first network device may receive the SRS and measure the first reference signal level, and the second network device may also receive the SRS and measure the second reference signal level. The first network device may obtain the second reference signal level and determine the ratio of the first reference signal level to the second reference signal level as the path loss ratio. Furthermore, the first network device may determine the obtained path loss ratio as the second correction parameter.

[0108] In the above implementation, the second correction parameter is determined by the measurement result of the uplink reference signal. The method is simple and can ensure that the determined second correction parameter is reasonable and reliable.

[0109] Optionally, the second network device is a single uplink device and the first network device and the second network device do not perform joint reception, or the second network device is a single uplink device, the terminal device only performs uplink communication with the second network device, and the signal reception quality of the second network device is higher than the signal reception quality of the first network device. In these cases, the second correction parameter (hereinafter referred to as β PL The value of (instead of expression) is greater than 0 and less than 1.

[0110] Optionally, the second network device is a single uplink device, the first network device and the second network device perform joint reception, and the propagation loss between the terminal device and the first network device is less than the transmission loss between the terminal device and the second network device; or, the second network device is a single uplink device and the terminal device performs uplink communication with the first network device and the second network device at the same time. In these cases, β PL The value of is greater than 1.

[0111] Optionally, the second network device is not a single uplink device, or the second network device and the first network device are the same device, or the second network device is a single uplink device, the terminal device only performs uplink communication with the first network device, and the signal reception quality of the first network device is higher than the signal reception quality of the second network device. In these cases, β PL The value of is equal to 1.

[0112] In other words, in the scenario where there is no single uplink TRP deployment, either the target signal is sent to the first network device, or the terminal device only communicates uplink with the first network device with better signal reception quality. The terminal device can use the existing solution to adjust the uplink transmit power, so β PL The value of is equal to 1. In the general scenario where there is a single uplink TRP deployment (here the second network device is the single uplink TRP, the first network device is its associated network device, also called a macro base station, and the first network device can be used for downlink reception by the terminal device), and the network device does not perform joint reception with the single uplink TRP, or when the terminal device only performs uplink communication with the second network device with better signal reception quality, since the main function of the single uplink TRP is to complete the uplink coverage, the path loss of the terminal device facing the single uplink TRP is often smaller than the path loss facing the macro base station, β PL The value of is greater than 0 and less than 1, so that a better compromise between macro-oriented and single uplink TRP-oriented can be achieved. In the scenario where a single uplink TRP is deployed, the single uplink TRP and the macro station are jointly received, and when the terminal is closer to the macro station, the path loss of the terminal device facing the single uplink TRP is greater than the path loss facing the macro station, or when the second network device is a single uplink device and the terminal device simultaneously performs uplink communication with the first network device and the second network device, β PL The value of is greater than 1, so as to achieve a better compromise between macro-oriented and single uplink TRP. In short, the solution provided by this application can be adjusted by PL The value range of can be used to adapt to different communication scenarios, which is highly flexible.

[0113] It should be understood that the β PL The value conditions of β are only exemplary. In actual implementation, under other possible value conditions, β PLThe value range described above may also be used, and this application does not impose any limitation on this.

[0114] Optionally, in actual implementation, the first network device may PL The value of is bit quantized to obtain the quantized β PL , and the quantized β is indicated by the target information PL For example, the quantized β PL The value range of β can be [0, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1]°[1, 2, 3, 4, 5, 6, 7, 8, 9, 10], where "[a]°[b]" represents the Cartesian product of a and b. In other words, in actual implementation, β PL The value range of can be between (0,10], and the bit quantization is performed according to certain rules.

[0115] In a third optional implementation, the correction parameters may specifically include the first correction parameter and the second correction parameter. In this case, the specific process of determining the first correction parameter and the second correction parameter by the first network device, as well as the description of the values ​​of the first correction parameter and the second correction parameter, can be found in the corresponding process described above and will not be repeated here.

[0116] It should be understood that the process of the first network device determining the correction parameter described above is only exemplary. In actual implementation, the first network device may also use other methods to determine the correction parameter, and this application does not impose any specific restrictions on this.

[0117] S202: The first network device sends target information to the terminal device. Correspondingly, the terminal device receives the target information.

[0118] In some feasible implementations, after determining the target information, the first network device may generate a message containing the target information and send the message to the terminal device. Accordingly, the terminal device may receive the message from the first network device, extract the target information from the message, and determine the correction parameter based on the target information.

[0119] Optionally, the above-mentioned target information can be transmitted between the first network device and the terminal device through RRC messages, DCI messages, etc. This application does not limit the specific method of transmitting the target information between the first network device and the terminal device.

[0120] S203: The terminal device determines a target transmission power for sending a target signal to the second network device.

[0121] In some feasible implementations, after obtaining the above-mentioned correction parameters, the terminal device may correct the obtained path loss estimation result between the second network device and the terminal device based on the correction parameters to obtain a downlink path loss correction result. The terminal device may determine the target transmit power for sending the target signal to the second network device based on the downlink path loss correction result. The above-mentioned path loss estimation result may be determined by the terminal device based on a path loss compensation factor configured (or issued) by the first network device, and / or a downlink path loss estimation value obtained by the terminal device based on a downlink reference signal measurement of the first network device.

[0122] It should be understood that the path loss compensation factor (here assumed to be α) is typically configured by the first network device via a Radio Resource Control (RRC) message. For example, its pseudo code may be: Alpha::=ENUMERATED{alpha0,alpha04,alpha05,alpha06,alpha07,alpha08,alpha09,alpha1}, where Alpha is the name of the RRC variable and ENUMERATED represents the quantized value of the path loss compensation factor α.

[0123] The downlink path loss estimate (here assumed to be PL) is usually the downlink path loss estimate calculated by the terminal device through the index value of the downlink reference signal of the first network device, and the downlink path loss estimate is used as the path loss compensation value for uplink power control. Here, the downlink reference signal of the first network device may include a synchronization signal and a PBCH block (i.e., SS / PBCHblock) or a channel state information reference signal (CSI-RS) resource. Here, the downlink path loss estimate PL satisfies the following relationship: PL = referenceSignalPower - higher layer filtered RSRP. Wherein, referenceSignalPower represents the transmit power of the downlink reference signal configured by the higher layer signaling, and higher layer filtered RSRP represents the receive power of the downlink reference signal received by the terminal device after high-layer filtering.

[0124] The following will describe the specific process of the terminal device determining the target transmission power in combination with the three cases described above: the correction parameter includes the first correction parameter, the correction parameter includes the second correction parameter, and the correction parameter includes the first correction parameter and the second correction parameter.

[0125] Case 1: Correction parameters include the first correction parameter

[0126] In this case, the terminal device may first determine the above-mentioned downlink path loss correction result based on the first correction parameter.

[0127] In the first optional implementation, the downlink path loss correction result satisfies the following formula: X =α×(PL+PL offset )(1)

[0128] Among them, P X is the downlink path loss correction result, α is the path loss compensation factor, PL is the downlink path loss estimation value, PL offset is the first correction parameter. In this case, α×PL can be understood as the downlink path loss estimation result mentioned above. That is, the terminal device can calculate the downlink path loss correction result based on formula (1).

[0129] In a second optional implementation, the downlink path loss correction result satisfies the following formula: X =PL+PL offset (2)

[0130] Among them, P X is the downlink path loss correction result, PL is the downlink path loss estimation value, PL offset is the first correction parameter. In this case, PL can be understood as the downlink path loss estimation result mentioned above.

[0131] Case 2: Correction parameters include the second correction parameter

[0132] In this case, the terminal device may first determine the above-mentioned downlink path loss correction result based on the second correction parameter.

[0133] In the first optional implementation, the downlink path loss correction result satisfies the following formula: X =α×PL×β PL (3)

[0134] Among them, P X is the downlink path loss correction result, α is the path loss compensation factor, PL is the downlink path loss estimation value, β PL is the second correction parameter. In this case, α×PL can be understood as the downlink path loss estimation result mentioned above.

[0135] In the second optional implementation, the downlink path loss correction result satisfies the following formula: X =PL×β PL (4)

[0136] Among them, P X is the downlink path loss correction result, PL is the downlink path loss estimation value, β PL is the second correction parameter. In this case, PL can be understood as the downlink path loss estimation result mentioned above.

[0137] Case 3: The correction parameters include the first correction parameter and the second correction parameter

[0138] In this case, the terminal device may first determine the above-mentioned downlink path loss correction result based on the first correction parameter and the second correction parameter.

[0139] In the first optional implementation, the downlink path loss correction result satisfies the following formula: X =α×PL+PL offset ×β PL (5)

[0140] Among them, P X is the downlink path loss correction result, α is the path loss compensation factor, PL is the downlink path loss estimation value, PL offset is the first correction parameter, β PL is the second correction parameter. In this case, α×PL can be understood as the downlink path loss estimation result mentioned above.

[0141] In the second optional implementation, the downlink path loss correction result satisfies the following formula: X =PL+PL offset ×β PL (6)

[0142] Among them, P X is the downlink path loss correction result, PL is the downlink path loss estimation value, PL offset is the first correction parameter, β PL is the second correction parameter. In this case, PL can be understood as the downlink path loss estimation result mentioned above.

[0143] Furthermore, the terminal device may determine the target transmission power for sending the target signal to the second network device based on the downlink path loss correction result calculated by it.

[0144] In a first optional implementation manner, the target signal may include an SRS.

[0145] In this case, the terminal device can use the following formula to combine the downlink path loss correction result P X The above target transmission power is obtained by calculation.

[0146] Among them, PSRS,b,f,c (i,q s ,l) is the target transmit power. It should be understood that this example uses the case where the terminal device transmits SRS in serving cell c, carrier f, and uplink activated bandwidth part (BWP) ID b. The same applies to the following text.

[0147] P CMAX,f,c (i) is the maximum output power configured for the terminal device in the case of serving cell c, carrier f, and SRS transmission timing i. This maximum output power is related to the transmission capability of the terminal device.

[0148] P O _ SRS,b,f,c (q s ) is the target received power value of the SRS with the serving cell being c, the carrier being f, and the BWP ID being b. s It is the ID of the SRS resource collection.

[0149] M SRS,b,f,c (i) is the number of resource blocks (RBs) occupied by the SRS with serving cell c, carrier f, BWP ID b, and transmission timing i.

[0150] μ is the value corresponding to the subcarrier spacing (SCS) configuration.

[0151] P X is the downlink path loss correction result calculated by the above formula (1), formula (3) or formula (5).

[0152] In a second optional implementation manner, the target signal may include a signal transmitted through a physical uplink shared channel (PUSCH).

[0153] In this case, the terminal device can use the following formula to combine the downlink path loss correction result P X The above target transmission power is obtained by calculation.

[0154] Among them, P PUSCH,b,f,c (i,j,q d,l) is the target transmit power. It should be understood that this is an example of a terminal device sending a target signal on a serving cell of c, a carrier of f, and a BWP ID of b, and the same applies to the following text. Among them, j is the parameter set configuration index (i.e., parameter set configuration). When j=0, the uplink grant configuration (i.e., ConfiguredGrantConfig) represents the uplink power control of the PUSCH carrying msg3 (4-step RA) or msgA (2-step RA). When j=1, ConfiguredGrantConfig represents the uplink power control of the PUSCH during configuration scheduling. In addition, when j takes a value greater than or equal to 2, ConfiguredGrantConfig represents the power control under normal circumstances.

[0155] P CMAX,f,c (i) is the maximum output power configured for the terminal device in the case of serving cell c, carrier f, and target signal transmission timing i. This maximum output power is related to the transmission capability of the terminal device.

[0156] P O _PUSCH,b,f,c(j) is the target received power value of the target signal on the serving cell c, carrier f and BWP ID b.

[0157] The number of resource blocks (RBs) occupied by the target signal with serving cell c, carrier f, BWP ID b and transmission timing i.

[0158] μ is the value corresponding to the subcarrier spacing (SCS) configuration.

[0159] P X is the downlink path loss correction result calculated by the above formula (1), formula (3) or formula (5).

[0160] f b,f,c (i, l) is a closed-loop control parameter, which is a dynamic power adjustment amount indicated by the first network device through downlink control information (DCI).

[0161] Δ TF,b,f,c (i) represents the PUSCH transmit power adjustment amount, and its value is related to the PUSCH format.

[0162] In a third optional implementation manner, the target signal may include a signal transmitted via a physical uplink control channel (PUCCH).

[0163] In this case, the terminal device can use the following formula to combine the downlink path loss correction result P X The above target transmission power is obtained by calculation.

[0164] Among them, P PUCCH,b,f,c (i,q u ,q d ,l) is the target transmit power. It should be understood that this is an example of a terminal device sending a target signal on a serving cell of c, a carrier of f, and a BWP ID of b, and the same applies to the following text. Among them, j is the parameter set configuration index (i.e., parameter set configuration). When j=0, the uplink grant configuration (i.e., ConfiguredGrantConfig) represents the uplink power control of the PUSCH carrying msg3 (4-step RA) or msgA (2-step RA). When j=1, ConfiguredGrantConfig represents the uplink power control of the PUSCH during configuration scheduling. In addition, when j takes a value greater than or equal to 2, ConfiguredGrantConfig represents the power control under normal circumstances.

[0165] P CMAX,f,c (i) is the maximum output power configured for the terminal device in the case of serving cell c, carrier f, and target signal transmission timing i. This maximum output power is related to the transmission capability of the terminal device.

[0166] P O _PUCCH,b,f,c(j) is the target received power value of the target signal with serving cell c, carrier f and BWP ID b.

[0167] The number of resource blocks (RBs) occupied by the target signal with serving cell c, carrier f, BWP ID b and transmission opportunity i.

[0168] μ is the value corresponding to the subcarrier spacing (SCS) configuration.

[0169] P X is the downlink path loss correction result calculated by the above formula (2), formula (4) or formula (6).

[0170] gb,f,c (i, l) is a closed-loop control parameter, which is a dynamic power adjustment amount indicated by the first network device through the DCI.

[0171] Δ F _ PUCCH (i) represents the PUCCH transmit power adjustment amount, and its value is related to the PUCCH format.

[0172] Furthermore, after the terminal device calculates the target transmit power using the above formula (7), formula (8) or formula (9), it can send a target signal to the second network device based on the target transmit power.

[0173] It should be noted that the above description of the type of target signal is only exemplary. In actual implementation, when the target signal is a signal of other types than those described above, the terminal device may also use formula (7), formula (8) or formula (9) to calculate the target transmit power. This application does not impose any specific restrictions on this.

[0174] In the communication method provided in the present application, the terminal device will correct the downlink path loss estimation result in combination with the correction parameters configured by the first network device, which makes the target transmission power determined by it more reasonable and reliable, and can more effectively compensate for the effects of path loss and shadow fading. Using the method provided in the present application to determine the uplink transmission power for a single uplink TRP can solve the problem that the determined transmission power of the existing solution may be too high or too low, and can ensure the transmission quality of the uplink between the terminal device and the single uplink TRP.

[0175] The method of the embodiment of the present application is described in detail above with reference to Figures 1 and 2. The communication device involved in the present application is described in detail below with reference to Figures 3 to 5.

[0176] Please refer to Figure 3, which is a schematic diagram of the structure of a communication device provided by this application. The communication device can be the terminal device in the above embodiment, or it can be an internal component or module of the terminal device.

[0177] The communication device may include one or more transceiver units 301 and one or more processing units 302. The transceiver unit 301 can be referred to as a transceiver, transceiver circuit, or transceiver, and may include at least one antenna and radio frequency circuitry. The transceiver unit 301 is primarily responsible for transmitting and receiving radio frequency signals and converting radio frequency signals to baseband signals, for example, receiving indication information from a network device. The processing unit 302 is primarily responsible for baseband processing and controlling the communication device. The transceiver unit 301 and processing unit 302 may be physically co-located or physically separate, i.e., distributed. In a specific implementation, the transceiver unit 301 may be comprised of one or more boards. Multiple boards may jointly support a radio access network of a single access standard or independently support radio access networks of different access standards. The processing unit 302 also includes a memory and a processor. The memory is used to store necessary instructions and data. The processor is used to control the communication device to perform necessary actions, for example, to control the communication device to execute the relevant operating procedures of the terminal device described in the first embodiment. The memory and processor may serve one or more boards. That is, each board can be equipped with a separate memory and processor. Alternatively, multiple boards can share the same memory and processor. Furthermore, each board can be equipped with necessary circuitry. Furthermore, the communication device may also include input and output devices, such as a touch screen, display, keyboard, etc., primarily for receiving data input by a user using the device and outputting data to the user. It should be noted that in some scenarios, the communication device may not include input and output devices.

[0178] In a specific implementation, the transceiver unit 301 is configured to receive target information from a first network device. The target information is used to indicate a correction parameter. The processing unit 302 is configured to determine a target transmit power for sending a target signal to a second network device, wherein the target transmit power is determined based on a downlink path loss correction result, the downlink path loss correction result is determined by the correction parameter and a downlink path loss estimation result, and the downlink path loss estimation result is determined by a path loss compensation factor configured by the first network device and / or a downlink path loss estimation value obtained by the terminal device based on a downlink reference signal measurement of the first network device.

[0179] In a possible implementation, the correction parameter includes a first correction parameter, and the downlink path loss correction result satisfies the following formula: X =α×(PL+PL offset )

[0180] Among them, P Xis the downlink path loss correction result, α is the path loss compensation factor, PL is the downlink path loss estimation value, PL offset is the first correction parameter.

[0181] In a possible implementation, the correction parameter includes a first correction parameter, and the downlink path loss correction result satisfies the following formula: X =PL+PL offset

[0182] Among them, P X is the downlink path loss correction result, PL is the downlink path loss estimation value, PL offset is the first correction parameter.

[0183] In a possible implementation, the second network device is a single uplink device and the first network device and the second network device do not perform joint reception, or the second network device is a single uplink device, the terminal device only performs uplink communication with the second network device, and the signal reception quality of the second network device is higher than the signal reception quality of the first network device, PL offset The value of is less than 0.

[0184] In a possible implementation, the second network device is a single uplink device, the first network device and the second network device perform joint reception, and the propagation loss between the terminal device and the first network device is less than the transmission loss between the terminal device and the second network device, or the second network device is a single uplink device and the terminal device performs uplink communication with the first network device and the second network device at the same time, PL offset The value of is greater than 0.

[0185] In a possible implementation, the second network device is not a single uplink device, or the second network device and the first network device are the same device, or the second network device is a single uplink device, the terminal device only performs uplink communication with the first network device, and the signal reception quality of the first network device is higher than the signal reception quality of the second network device, PL offset The value of is 0.

[0186] In a possible implementation, the correction parameter includes a second correction parameter, and the downlink path loss correction result satisfies the following formula: X =α×PL×β PL

[0187] Among them, P Xis the downlink path loss correction result, α is the path loss compensation factor, PL is the downlink path loss estimation value, β PL is the second correction parameter.

[0188] In a possible implementation, the correction parameter includes a second correction parameter, and the downlink path loss correction result satisfies the following formula: X =PL×β PL

[0189] Among them, P X is the downlink path loss correction result, PL is the downlink path loss estimation value, β PL is the second correction parameter.

[0190] In a possible implementation, the second network device is a single uplink device and the first network device and the second network device do not perform joint reception, or the second network device is a single uplink device, the terminal device only performs uplink communication with the second network device, and the signal reception quality of the second network device is higher than the signal reception quality of the first network device, β PL The value is greater than 0 and less than 1.

[0191] In one possible implementation, the second network device is a single uplink device, the first network device and the second network device perform joint reception, and the propagation loss between the terminal device and the first network device is less than the transmission loss between the terminal device and the second network device, or the second network device is a single uplink device and the terminal device performs uplink communication with the first network device and the second network device at the same time, β PL The value of is greater than 1.

[0192] In a possible implementation, the second network device is a non-single uplink device, or the second network device and the first network device are the same device, or the second network device is a single uplink device, the terminal device only performs uplink communication with the first network device, and the signal reception quality of the first network device is higher than the signal reception quality of the second network device, β PL The value of is 1.

[0193] In a possible implementation, the correction parameter includes a first correction parameter and a second correction parameter, and the downlink path loss correction result satisfies the following formula: X =α×PL+PL offset ×β PL

[0194] Among them, P Xis the downlink path loss correction result, α is the path loss compensation factor, PL is the downlink path loss estimation value, PL offset is the first correction parameter, β PL is the second correction parameter.

[0195] In a possible implementation, the correction parameter includes a first correction parameter and a second correction parameter, and the downlink path loss correction result satisfies the following formula: X =PL+PL offset ×β PL

[0196] Among them, P X is the downlink path loss correction result, PL is the downlink path loss estimation value, PL offset is the first correction parameter, β PL is the second correction parameter.

[0197] Please refer to Figure 4, which is a structural diagram of another communication device provided by the present application. The communication device can be used to perform the functions of the first network device in the above-mentioned embodiment. The communication device can be the first network device itself, or it can be an element or module inside the first network device. For the sake of convenience, only the main components of the communication device are shown in Figure 4. As can be seen from Figure 4, the communication device includes modules such as a processor, a memory, a radio frequency unit, and an antenna. The processor is mainly used to process communication protocols and communication data, as well as to control the communication device, execute software programs, and process software program data. The memory is mainly used to store software programs and data. The radio frequency unit is mainly used for converting baseband signals into radio frequency signals and processing radio frequency signals. The antenna is mainly used to transmit and receive radio frequency signals in the form of electromagnetic waves.

[0198] When data needs to be sent, the processor performs baseband processing on the data to be sent, and then outputs the baseband signal to the radio frequency unit. The radio frequency unit performs radio frequency processing on the baseband signal and then sends the radio frequency signal outward in the form of electromagnetic waves through the antenna. When data is sent to the communication device, the radio frequency unit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor. The processor converts the baseband signal into data and processes the data. For ease of explanation, only one memory and processor are shown in Figure 4. In an actual device product, there may be one or more processors and one or more memories. The memory may also be referred to as a storage medium or a storage device, etc. The memory may be set independently of the processor or integrated with the processor, and the embodiments of the present application do not limit this.

[0199] In the embodiments of the present application, the antenna and radio frequency unit with transceiver functions can be regarded as the transceiver unit of the communication device, and the processor with processing function can be regarded as the processing unit of the communication device. As shown in Figure 4, the communication device includes a transceiver unit 401 and a processing unit 402. Optionally, the device used to implement the receiving function in the transceiver unit 401 can be regarded as a receiving unit, and the device used to implement the transmitting function in the transceiver unit 401 can be regarded as a transmitting unit, that is, the transceiver unit 401 includes a receiving unit and a transmitting unit. Here, the receiving unit may sometimes also be referred to as a receiver, a receiver, or a receiving circuit, etc. The transmitting unit may sometimes also be referred to as a transmitter, a transmitter, or a transmitting circuit, etc.

[0200] In a specific implementation, the processing unit 402 is configured to determine target information for indicating correction parameters. The correction parameters and the downlink path loss estimation result are used to determine a downlink path loss correction result, which is used to determine a target transmit power for a terminal device to transmit a target signal to a second network device. The downlink path loss estimation result is determined by a path loss compensation factor configured for the first network device and / or a downlink path loss estimation value obtained by the terminal device based on a downlink reference signal measurement of the first network device. The transceiver unit 401 is configured to send the target information to the terminal device.

[0201] In a possible implementation, the correction parameter includes a first correction parameter, and the downlink path loss correction result satisfies the following formula: X =α×(PL+PL offset )

[0202] Among them, P X is the downlink path loss correction result, α is the path loss compensation factor, PL is the downlink path loss estimation value, PL offset is the first correction parameter.

[0203] In a possible implementation, the correction parameter includes a first correction parameter, and the downlink path loss correction result satisfies the following formula: X =PL+PL offset

[0204] Among them, P X is the downlink path loss correction result, PL is the downlink path loss estimation value, PL offset is the first correction parameter.

[0205] In a possible implementation, the second network device is a single uplink device and the first network device and the second network device do not perform joint reception, or the second network device is a single uplink device, the terminal device only performs uplink communication with the second network device, and the signal reception quality of the second network device is higher than the signal reception quality of the first network device, PL offset The value of is less than 0.

[0206] In a possible implementation, the second network device is a single uplink device, the first network device and the second network device perform joint reception, and the propagation loss between the terminal device and the first network device is less than the transmission loss between the terminal device and the second network device, or the second network device is a single uplink device and the terminal device performs uplink communication with the first network device and the second network device at the same time, PL offset The value of is greater than 0.

[0207] In a possible implementation, the second network device is not a single uplink device, or the second network device and the first network device are the same device, or the second network device is a single uplink device, the terminal device only performs uplink communication with the first network device, and the signal reception quality of the first network device is higher than the signal reception quality of the second network device, PL offset The value of is 0.

[0208] In a possible implementation, the correction parameter includes a second correction parameter, and the downlink path loss correction result satisfies the following formula: X =α×PL×β PL

[0209] Among them, P X is the downlink path loss correction result, α is the path loss compensation factor, PL is the downlink path loss estimation value, β PL is the second correction parameter.

[0210] In a possible implementation, the correction parameter includes a second correction parameter, and the downlink path loss correction result satisfies the following formula: X =PL×β PL

[0211] Among them, P X is the downlink path loss correction result, PL is the downlink path loss estimation value, β PL is the second correction parameter.

[0212] In a possible implementation, the second network device is a single uplink device and the first network device and the second network device do not perform joint reception, or the second network device is a single uplink device, the terminal device only performs uplink communication with the second network device, and the signal reception quality of the second network device is higher than the signal reception quality of the first network device, β PL The value is greater than 0 and less than 1.

[0213] In one possible implementation, the second network device is a single uplink device, the first network device and the second network device perform joint reception, and the propagation loss between the terminal device and the first network device is less than the transmission loss between the terminal device and the second network device, or the second network device is a single uplink device and the terminal device performs uplink communication with the first network device and the second network device at the same time, β PL The value of is greater than 1.

[0214] In a possible implementation, the second network device is a non-single uplink device, or the second network device and the first network device are the same device, or the second network device is a single uplink device, the terminal device only performs uplink communication with the first network device, and the signal reception quality of the first network device is higher than the signal reception quality of the second network device, β PL The value of is 1.

[0215] In a possible implementation, the correction parameter includes a first correction parameter and a second correction parameter, and the downlink path loss correction result satisfies the following formula: X =α×PL+PL offset ×β PL

[0216] Among them, P X is the downlink path loss correction result, α is the path loss compensation factor, PL is the downlink path loss estimation value, PL offset is the first correction parameter, β PL is the second correction parameter.

[0217] In a possible implementation, the correction parameter includes a first correction parameter and a second correction parameter, and the downlink path loss correction result satisfies the following formula: X =PL+PL offset ×β PL

[0218] Among them, P X is the downlink path loss correction result, PL is the downlink path loss estimation value, PL offsetis the first correction parameter, β PL is the second correction parameter.

[0219] Please refer to Figure 5, which is a schematic diagram of the structure of another communication device provided by this application. The communication device 500 can be used to implement the operations performed by the terminal device in the above embodiment, or the communication device 500 can be the terminal device described above. The communication device 500 includes: a processor 501, a memory 502, and a bus system 504.

[0220] The memory 502 includes, but is not limited to, RAM, ROM, EPROM, or CD-ROM, and is used to store relevant instructions and data. The memory 502 stores the following elements, executable modules, or data structures, or a subset thereof, or an extended set thereof:

[0221] Operation instructions: include various operation instructions, used to implement various operations.

[0222] Operating system: includes various system programs used to implement various basic services and process hardware-based tasks.

[0223] FIG5 shows only one memory. Of course, the number of memories may also be multiple as needed.

[0224] The device may further include a transceiver 503. The transceiver 503 may be a communication module or a transceiver circuit. In the embodiments of the present application, the transceiver 503 is used to perform operations such as receiving information as described in the above embodiments.

[0225] Processor 501 may be a controller, a CPU, a general-purpose processor, a DSP, an ASIC, an FPGA, or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Processor 501 may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and the like.

[0226] In a specific application, the various components of the communication device 500 are coupled together via a bus system 504. In addition to a data bus, the bus system 504 may also include a power bus, a control bus, and a status signal bus. However, for clarity, in FIG5 , various buses are labeled as the bus system 504. For ease of illustration, FIG5 is merely a schematic diagram.

[0227] In a specific implementation, the communication device 500 may execute the steps of the method performed by the terminal device in the above embodiment. Specifically, when the communication device 500 is used to implement the steps performed by the terminal device in the communication method provided in the embodiment, the processor 501 may be used to implement the functions of the above processing unit 302, and the transceiver 503 is used to implement the functions of the above transceiver unit 301.

[0228] 5 , the communication device 500 can also be used to implement the operations performed by the first network device in the above embodiment. In other words, the communication device 500 can also be the first network device mentioned above.

[0229] In a specific implementation, when the communication device 500 is used to implement the various steps performed by the first network device in the communication method provided in the embodiment, the processor 501 can implement the functions of the above-mentioned processing unit 402, and the transceiver 503 is used to implement the functions of the above-mentioned transceiver unit 401.

[0230] It should be noted that in practical applications, the processor in the embodiments of the present application can be an integrated circuit chip with signal processing capabilities. During implementation, each step of the above-mentioned method embodiment can be completed by hardware integrated logic circuits in the processor or by software instructions. The above-mentioned processor can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. The various methods, steps, and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in the embodiments of the present application can be directly implemented and executed by a hardware decoding processor, or by a combination of hardware and software modules in the decoding processor. The software module can be located in a storage medium well-known in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, etc. The storage medium is located in the memory, and the processor reads the information in the memory and, in conjunction with its hardware, completes the steps of the above-mentioned method.

[0231] It is understood that the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static 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 link dynamic random access memory (SLDRAM), and direct rambus RAM (DR RAM). It should be noted that the memory described in the embodiments of the present application is intended to include, but is not limited to, these and any other suitable types of memory.

[0232] The present application also provides a communication system, which includes one or more first network devices as described above and one or more terminal devices as described above.

[0233] The present application also provides a computer-readable medium having a computer program stored thereon, which, when executed by a computer, implements the steps of the communication method executed by the terminal device in the above embodiment.

[0234] The present application also provides a computer program product, which, when executed by a computer, implements the steps of the communication method performed by the network device in the above embodiment.

[0235] The present application also provides a communication device, including a processor and an interface. The processor is used to implement the steps of the communication method performed by the terminal device or network device in the above embodiment. It should be understood that the communication device can be a chip, and the above processor can be implemented by hardware or software. When implemented by hardware, the processor can be a logic circuit, an integrated circuit, etc. When implemented by software, the processor can be a general-purpose processor that is implemented by reading software code stored in a memory. The memory can be integrated into the processor or located outside the processor and exist independently.

[0236] The present application also provides a chip system, which includes a processor for supporting a device in which the chip system is installed to implement the communication method performed by the above-mentioned terminal device or network device, such as generating or processing the data and / or information involved in the above-mentioned method. In one possible design, the chip system also includes a memory, which is used to store program instructions and data necessary for the data sending device. The chip system can be composed of a chip, or it can include a chip and other discrete devices.

[0237] In the above method embodiments, all or part of the methods can be implemented using software, hardware, firmware, or any combination thereof. When implemented using software, all or part of the methods can be implemented in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes one or more available media. The available medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a high-density digital video disc (DVD), or a semiconductor medium (e.g., a solid state disk (SSD)).

[0238] The above description is only a preferred embodiment of the technical solution of this application and is not intended to limit the scope of protection of this application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this application should be included in the scope of protection of this application.

Claims

1. A communication method, characterized in that: Applicable to a terminal device, the method comprises: receiving target information from a first network device, wherein the target information is used to indicate a correction parameter; Determine a target transmit power for sending a target signal to a second network device, wherein the target transmit power is determined based on a downlink path loss correction result, the downlink path loss correction result is determined by the correction parameter and a downlink path loss estimation result, and the downlink path loss estimation result is determined by a path loss compensation factor configured by the first network device and / or a downlink path loss estimation value obtained by the terminal device based on a downlink reference signal measurement of the first network device.

2. A communication method, characterized in that: Applicable to a first network device, the method comprises: Determine target information for indicating correction parameters, wherein the correction parameters and a downlink path loss estimation result are used to determine a downlink path loss correction result, the downlink path loss correction result is used to determine a target transmit power for a terminal device to send a target signal to a second network device, and the downlink path loss estimation result is determined by a path loss compensation factor configured by the first network device and / or a downlink path loss estimation value obtained by the terminal device based on a downlink reference signal measurement of the first network device; The target information is sent to the terminal device.

3. The method according to claim 1 or 2, characterized in that: The correction parameter includes a first correction parameter, and the downlink path loss correction result satisfies the following formula: X =α×(PL+PL offset ) Among them, P X is the downlink path loss correction result, α is the path loss compensation factor, PL is the downlink path loss estimation value, PL offset is the first correction parameter.

4. The method according to claim 1 or 2, characterized in that: The correction parameter includes a first correction parameter, and the downlink path loss correction result satisfies the following formula: X =PL+PL offset Among them, P X is the downlink path loss correction result, PL is the downlink path loss estimation value, PL offset is the first correction parameter.

5. The method according to claim 3 or 4, characterized in that: The second network device is a single uplink device and the first network device and the second network device do not perform joint reception, or the second network device is a single uplink device, the terminal device only performs uplink communication with the second network device and the signal reception quality of the second network device is higher than the signal reception quality of the first network device, PL offset The value of is less than 0.

6. The method according to any one of claims 3 to 5, characterized in that: The second network device is a single uplink device, the first network device and the second network device perform joint reception, and the propagation loss between the terminal device and the first network device is less than the transmission loss between the terminal device and the second network device, or the second network device is a single uplink device and the terminal device performs uplink communication with the first network device and the second network device at the same time, PL offset The value of is greater than 0.

7. The method according to any one of claims 3 to 6, characterized in that: The second network device is not a single uplink device, or the second network device and the first network device are the same device, or the second network device is a single uplink device, the terminal device only performs uplink communication with the first network device and the signal reception quality of the first network device is higher than the signal reception quality of the second network device, PL offset The value of is 0.

8. The method according to claim 1 or 2, characterized in that: The correction parameter includes a second correction parameter, and the downlink path loss correction result satisfies the following formula: X =α×PL×β PL Among them, P X is the downlink path loss correction result, α is the path loss compensation factor, PL is the downlink path loss estimation value, β PL is the second correction parameter.

9. The method according to claim 1 or 2, characterized in that: The correction parameter includes a second correction parameter, and the downlink path loss correction result satisfies the following formula: X =PL×β PL Among them, P X is the downlink path loss correction result, PL is the downlink path loss estimation value, β PL is the second correction parameter.

10. The method according to claim 8 or 9, characterized in that: The second network device is a single uplink device and the first network device and the second network device do not perform joint reception, or the second network device is a single uplink device, the terminal device only performs uplink communication with the second network device, and the signal reception quality of the second network device is higher than the signal reception quality of the first network device, β PL The value of is greater than 0 and less than 1.

11. The method according to any one of claims 8 to 10, characterized in that: The second network device is a single uplink device, the first network device and the second network device perform joint reception, and the propagation loss between the terminal device and the first network device is less than the transmission loss between the terminal device and the second network device, or the second network device is a single uplink device and the terminal device performs uplink communication with the first network device and the second network device at the same time, β PL The value of is greater than 1.

12. The method according to any one of claims 8 to 11, characterized in that: The second network device is not a single uplink device, or the second network device and the first network device are the same device, or the second network device is a single uplink device, the terminal device only performs uplink communication with the first network device and the signal reception quality of the first network device is higher than the signal reception quality of the second network device, β PL The value of is 1.

13. The method according to claim 1 or 2, characterized in that: The correction parameters include a first correction parameter and a second correction parameter, and the downlink path loss correction result satisfies the following formula: X =α×PL+PL offset ×β PL Among them, P X is the downlink path loss correction result, α is the path loss compensation factor, PL is the downlink path loss estimation value, PL offset is the first correction parameter, β PL is the second correction parameter.

14. The method according to claim 1 or 2, characterized in that: The correction parameters include a first correction parameter and a second correction parameter, and the downlink path loss correction result satisfies the following formula: X =PL+PL offset ×β PL Among them, P X is the downlink path loss correction result, PL is the downlink path loss estimation value, PL offset is the first correction parameter, β PL is the second correction parameter.

15. The method according to claim 13 or 14, characterized in that The second network device is a single uplink device and the first network device and the second network device do not perform joint reception, or the second network device is a single uplink device, the terminal device only performs uplink communication with the second network device, and the signal reception quality of the second network device is higher than the signal reception quality of the first network device, β PL The value of PL is greater than 0 and less than 1. offset The value of is less than 0.

16. The method according to any one of claims 13 to 15, characterized in that: The second network device is a single uplink device, the first network device and the second network device perform joint reception, and the propagation loss between the terminal device and the first network device is less than the transmission loss between the terminal device and the second network device, or the second network device is a single uplink device and the terminal device performs uplink communication with the first network device and the second network device at the same time, β PL The value of PL is greater than 1. offset The value of is greater than 0.

17. The method according to any one of claims 13 to 16, characterized in that: The second network device is not a single uplink device, or the second network device and the first network device are the same device, or the second network device is a single uplink device, the terminal device only performs uplink communication with the first network device and the signal reception quality of the first network device is higher than the signal reception quality of the second network device, β PL The value of PL is 1. offset The value of is 0.

18. The method according to any one of claims 1 to 17, characterized in that: The correction parameter is determined by the difference in path loss from the terminal device to the first network device and from the terminal device to the second network device, and / or the ratio of the path loss from the terminal device to the first network device and from the terminal device to the second network device.

19. A communication device, characterized in that: The communication device includes a transceiver unit and a processing unit; The transceiver unit is used to receive target information from the first network device, wherein the target information is used to indicate the correction parameter; The processing unit is used to determine a target transmission power for sending a target signal to a second network device, wherein the target transmission power is determined based on a downlink path loss correction result, the downlink path loss correction result is determined by the correction parameter and a downlink path loss estimation result, and the downlink path loss estimation result is determined by a path loss compensation factor configured by the first network device and / or a downlink path loss estimation value obtained by the terminal device based on a downlink reference signal measurement of the first network device.

20. A communication device, characterized in that: The communication device includes a transceiver unit and a processing unit; The processing unit is used to determine target information for indicating a correction parameter, wherein the correction parameter and a downlink path loss estimation result are used to determine a downlink path loss correction result, the downlink path loss correction result is used to determine a target transmit power for a terminal device to send a target signal to a second network device, and the downlink path loss estimation result is determined by a path loss compensation factor configured by the first network device and / or a downlink path loss estimation value obtained by the terminal device based on a downlink reference signal measurement of the first network device; The transceiver unit is used to send the target information to the terminal device.

21. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed, the communication method according to any one of claims 1 to 17 is implemented.

22. A chip, characterized in that: Including processor and interface; The processor is configured to read instructions to execute the communication method according to any one of claims 1 to 17.

23. A computer program product, wherein the communication method according to any one of claims 1 to 17 is executed by a computer.

24. A communication device, characterized in that: include: at least one processor and memory; The memory is used to store computer programs; The processor is configured to execute the computer program stored in the memory so that the communication device executes the communication method according to any one of claims 1 to 17.

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