Power control method and device

Abstract

According to the power control method and device, the sending power of a sensing signal can be determined, sending of the sensing signal is achieved, and the sending power of the sensing signal and a communication signal can be flexibly adjusted. The method comprises the following steps: a terminal determines a first sending power and a second sending power, sends a sensing signal on a first time unit according to the first sending power, and sends a communication signal on the first time unit according to the second sending power. Wherein the first sending power and the second sending power meet the constraint of the maximum sending power of the terminal. The first sending power is the sending power obtained after the third sending power is adjusted through the first power control factor, and the second sending power is the sending power obtained after the fourth sending power is adjusted through the second power control factor. The third transmission power is a transmission power taking into account the first path loss (such as the sensing path loss), or a desired transmission power taking into account the sensing signal. The fourth transmission power is a transmission power taking into account the second path loss (such as communication path loss).

Description

Technical Field

[0001] The embodiments of the present application relate to the field of communications, and in particular, to a power control method and apparatus. Background Art

[0002] Integrated sensing and communication (ISAC) is one of the important scenarios of sixth generation (6G) mobile communications. ISAC provides high-quality communication and high-precision sensing functions simultaneously by sharing software and hardware resources in the same system, reducing costs and improving system performance. Among them, the communication function can be understood as traditional data transmission, etc., and the sensing function includes ranging, speed measurement, angle measurement, imaging, detection, etc.

[0003] With the development of ISAC technology, having both communication and sensing functions will be the ability trend of future base stations and terminals. That is to say, a terminal may need to send both communication signals and sensing signals. In this scenario, how to determine the transmission power of the sensing signal is an urgent problem to be solved at present. Summary of the Invention

[0004] The present application provides a power control method and apparatus, which can determine the transmission power of the sensing signal and realize the transmission of the sensing signal.

[0005] In a first aspect, a communication method is provided. This method can be executed by a first communication device, or by components of the first communication device, such as a processor, a chip, or a chip system of the first communication device, etc., and can also be implemented by a logic module or software that can implement all or part of the functions of the first communication device. Among them, the first communication device can be a terminal, that is, this method can be executed by the terminal or components of the terminal, such as a processor, a chip, or a chip system, and can also be implemented by a logic module or software that can implement part or all of the functions of the terminal. The method includes: determining a first transmission power and a second transmission power, and transmitting a sensing signal in a first time unit according to the first transmission power, and transmitting a communication signal in the first time unit according to the second transmission power. Wherein, the sum of the first transmission power and the second transmission power is less than or equal to the maximum transmission power of the terminal. The first transmission power is the product of a first power control factor and a third transmission power, and the second transmission power is the product of a second power control factor and a fourth transmission power. The third transmission power is determined according to the maximum transmission power of the terminal and a fifth transmission power, and the fifth transmission power is determined according to a first path loss, or the fifth transmission power is the desired transmission power of the sensing signal. The fourth transmission power is determined according to the maximum transmission power of the terminal and a second path loss.

[0006] Based on this solution, the first communication device can determine the transmission power of the sensing signal and achieve the transmission of the sensing signal. In addition, the first communication device uses the product of the first power control factor and the third transmission power as the transmission power of the sensing signal (i.e., the first transmission power), and uses the product of the second power control factor and the fourth transmission power as the transmission power of the communication signal (i.e., the second transmission power). Thus, the transmission powers of the sensing signal and the communication signal can be dynamically and flexibly adjusted through the first power control factor and the second power control factor, so that the sum of the first transmission power and the second transmission power meets the maximum transmission power constraint of the terminal, and further realizes the simultaneous transmission of the sensing signal and the communication signal, meeting the requirements of simultaneous sensing and communication.

[0007] In a possible design, the third transmission power satisfies the following relationship:

[0008] P sense (i) = min(P CMAX , Ps ense，PL (i))

[0009] Wherein, P sense (i) represents the third transmission power, i represents the index of the first time unit, P CMAX represents the maximum transmission power of the terminal, P sense，PL (i) represents the fifth transmission power, and min() represents the minimum value operation.

[0010] In a possible design, the third transmission power is determined according to the maximum transmission power of the terminal, the fifth transmission power, and the sixth transmission power. Among them, the sixth transmission power is determined according to at least one of the channel busy ratio CBR, the channel occupancy rate CR, or the sensing priority.

[0011] Based on this possible design, at least one of CBR, CR, or the sensing priority is considered when determining the transmission power of the sensing signal, so that it can be applied to the integrated sensing and communication scenario in a distributed system, improving the accuracy of the determined transmission power in this scenario, and thus ensuring the performance of communication and sensing.

[0012] In a possible design, the third transmission power satisfies the following relationship:

[0013] P sense (i) = min(P CMAX , P sense,C , P sense，PL (i))

[0014] Wherein, P sense (i) represents the third transmission power, i represents the index of the first time unit, P CMAX represents the maximum transmission power of the terminal, P sense，PL (i) represents the fifth transmission power, Psense，C It represents the sixth transmission power, and min() represents the operation of taking the minimum value.

[0015] In a possible design, the fifth transmission power is determined according to the first path loss and at least one of the following: the first desired reception power on a single resource block (RB), the first path loss compensation factor, the number of RBs occupied by the sensing signal, the first subcarrier configuration factor, or the first closed-loop power control parameter.

[0016] Based on this possible design, closed-loop power control is considered when determining the transmission power of the sensing signal, enabling the RAN node to adjust the transmission power of the terminal, improving the accuracy and rationality of the determined transmission power, and thus ensuring the performance of communication and sensing.

[0017] In a possible design, the fifth transmission power satisfies the following relationship:

[0018]

[0019] Or,

[0020]

[0021] Among them, P sense，PL (i) represents the fifth transmission power, i represents the index of the first time unit, P 0，sense represents the first desired reception power on a single RB, μ1 represents the first subcarrier configuration factor, represents the number of RBs occupied by the sensing signal in time unit i, α sense represents the first path loss compensation factor, PL sense represents the first path loss, f sense represents the first closed-loop power control parameter.

[0022] In a possible design, the fourth transmission power is determined according to the maximum transmission power of the terminal, the second path loss, and at least one of the following: the second desired reception power on a single RB, the second path loss compensation factor, the number of RBs occupied by the communication signal, the second subcarrier configuration factor, the second closed-loop power control parameter, or the power bias value, and the power bias value is determined by the modulation and coding scheme (MCS) of the communication signal.

[0023] In a possible design, when the sum of the third transmission power and the fourth transmission power is greater than the maximum transmission power of the terminal and the communication priority is higher than the sensing priority, determining the first transmission power includes: adjusting the first power control factor so that the sum of the first transmission power and the second transmission power is less than or equal to the maximum transmission power of the terminal. Alternatively, when the sum of the third transmission power and the fourth transmission power is greater than the maximum transmission power of the terminal and the communication priority is lower than the sensing priority, determining the second transmission power includes: adjusting the second power control factor so that the sum of the first transmission power and the second transmission power is less than or equal to the maximum transmission power of the terminal.

[0024] Based on this possible design, the first communication device can adjust the first power control factor or the second power control factor based on the priority, thereby dynamically and flexibly adjusting the transmission power of the sensing signal and the communication signal, so that the sum of the first transmission power and the second transmission power meets the maximum transmission power constraint of the terminal. In addition, adjusting the power control factor of the low-priority signal based on the priority can ensure the transmission power of the high-priority signal, thereby ensuring the performance of the high-priority signal.

[0025] In a possible design, when the sensing priority is higher than the communication priority, the first transmission power minus the second transmission power is greater than or equal to the first threshold. Alternatively, when the communication priority is higher than the sensing priority, the second transmission power minus the first transmission power is greater than or equal to the second threshold.

[0026] Based on this possible design, it can be ensured that the difference between the transmission power of the high-priority high signal and the transmission power of the low-priority signal is greater than or equal to the threshold, thereby reducing the interference of the low-priority signal on the high-priority signal and ensuring the transmission performance of the high-priority signal.

[0027] In a second aspect, a communication method is provided. This method can be executed by a first communication device, or by components of the first communication device, such as a processor, a chip, or a chip system of the first communication device, etc. It can also be implemented by a logic module or software that can implement all or part of the functions of the first communication device. Among them, the first communication device can be a terminal, that is, this method can be executed by a terminal or components of the terminal, such as a processor, a chip, or a chip system, and can also be implemented by a logic module or software that can implement part or all of the functions of the terminal. The method includes: determining a first transmission power and a second transmission power, and transmitting a sensing signal in a first time unit according to the first transmission power, and transmitting a communication signal in the first time unit according to the second transmission power. Wherein, the sum of the first transmission power and the second transmission power is less than or equal to the maximum transmission power of the terminal. When the sensing priority is higher than the communication priority, the first transmission power is determined according to the maximum transmission power of the terminal and a third transmission power, the third transmission power is determined according to a first path loss, or the third transmission power is the desired transmission power of the sensing signal, and the second transmission power is the difference between the maximum transmission power of the terminal and the first transmission power. Or, when the communication priority is higher than the sensing priority, the first transmission power is the difference between the maximum transmission power of the terminal and the second transmission power, and the second transmission power is determined according to the maximum transmission power of the terminal and a second path loss.

[0028] Based on this solution, the first communication device can determine the transmission power of the sensing signal and implement the transmission of the sensing signal. In addition, the first communication device preferentially determines the transmission power of the high-priority signal based on the priority, and uses the remaining power as the transmission power of the low-priority signal, so that the sum of the first transmission power and the second transmission power satisfies the maximum transmission power constraint of the terminal, and further realizes the simultaneous transmission of the sensing signal and the communication signal, meeting the requirements of simultaneous sensing and communication.

[0029] In a possible design, the first transmission power satisfies the following relationship:

[0030] P sense (i) = min(P CMAX , P sense，PL (i))

[0031] Wherein, P sense (i) represents the first transmission power, i represents the index of the first time unit, P CMAX represents the maximum transmission power of the terminal, P sense，PL (i) represents the third transmission power, and min() represents the minimum value operation.

[0032] In a possible design, the first transmission power is determined based on the maximum transmission power of the terminal, the third transmission power, and the fourth transmission power. Among them, the fourth transmission power is determined based on at least one of the channel busy ratio (CBR), the channel occupancy rate (CR), or the sensing priority.

[0033] In a possible design, the first transmission power satisfies the following relationship:

[0034] P sense (i) = min(P CMAX , P sense,C , P sense，PL (i))

[0035] Among them, P sense (i) represents the first transmission power, i represents the index of the first time unit, P CMAX represents the maximum transmission power of the terminal, P sense，PL (i) represents the third transmission power, P sense，C represents the fourth transmission power, and min() represents the minimum value operation.

[0036] In a possible design, the third transmission power is determined based on the first path loss and at least one of the following: the first expected received power on a single resource block (RB), the first path loss compensation factor, the number of RBs occupied by the sensing signal, the first subcarrier configuration factor, or the first closed-loop power control parameter.

[0037] In a possible design, the third transmission power satisfies the following relationship:

[0038]

[0039] Or,

[0040]

[0041] Among them, P sense，PL (i) represents the third transmission power, i represents the index of the first time unit, P 0，sense represents the first expected received power on a single RB, μ1 represents the first subcarrier configuration factor, represents the number of RBs occupied by the sensing signal in time unit i, α sense represents the first path loss compensation factor, PL sense represents the first path loss, and f sense represents the first closed-loop power control parameter.

[0042] In a possible design, the second transmission power is determined according to the maximum transmission power of the terminal, the second path loss, and at least one of the following: the second desired reception power on a single RB, the second path loss compensation factor, the number of RBs occupied by the communication signal, the second subcarrier configuration factor, the second closed-loop power control parameter, or the power offset value, where the power offset value is determined by the modulation and coding scheme (MCS) of the communication signal.

[0043] In a possible design, when the sensing priority is higher than the communication priority, the second transmission power satisfies the following relationship:

[0044] P comm (i) = P CMAX - P sense (i)

[0045] Alternatively, when the communication priority is higher than the sensing priority, the first transmission power satisfies the following relationship:

[0046] P sense (i) = P CMAX - P comm (i)

[0047] Wherein, P comm (i) represents the second transmission power, P CMAX represents the maximum transmission power of the terminal, and P sense (i) represents the first transmission power.

[0048] In a possible design, when the sensing priority is higher than the communication priority, the first transmission power minus the second transmission power is greater than or equal to the first threshold. Alternatively, when the communication priority is higher than the sensing priority, the second transmission power minus the first transmission power is greater than or equal to the second threshold.

[0049] Wherein, the technical effects brought by any possible design in the second aspect can refer to the technical effects brought by the corresponding design in the first aspect above, and will not be elaborated here.

[0050] In a third aspect, a communication device is provided for implementing various methods. The communication device includes modules, units, or means corresponding to the implementation of the methods. Among them, the module, unit, or means can be implemented by hardware, software, or by hardware executing corresponding software. The hardware or software includes one or more modules or units corresponding to the functions.

[0051] In some possible designs, the communication device may include a processing module and a transceiver module. The processing module may be used to implement the processing functions in any of the above aspects and any possible implementation manners thereof. The transceiver module may include a receiving module and a transmitting module, which are respectively used to implement the receiving function and the transmitting function in any of the above aspects and any possible implementation manners thereof.

[0052] In some possible designs, the transceiver module may be constituted by a transceiver circuit, a transceiver, a transceiver device, or a communication interface.

[0053] In a fourth aspect, a communication device is provided, including: a processor and a memory; the memory is used to store computer instructions, and when the processor executes the instructions, the communication device is caused to execute the method described in any of the above aspects.

[0054] In a fifth aspect, a communication device is provided, including: a processor and a communication interface; the communication interface is used to communicate with modules outside the communication device; the processor is used to execute a computer program or instructions, so that the communication device executes the method described in any of the above aspects.

[0055] In a sixth aspect, a communication device is provided, including: at least one processor; the processor is used to execute computer programs or instructions stored in a memory, so that the communication device executes the method described in any of the above aspects. The memory may be coupled to the processor, or may be independent of the processor.

[0056] In a seventh aspect, a communication device (for example, the communication device may be a chip or a chip system) is provided, and the communication device includes a processor for implementing the functions involved in any of the first aspect or the second aspect.

[0057] In some possible designs, the communication device includes a memory, and the memory is used to store necessary program instructions and data.

[0058] In some possible designs, when the device is a chip system, it may be constituted by chips, or may include chips and other discrete devices.

[0059] In a possible design, the communication devices described in the third aspect to the seventh aspect may be the first communication device in the first aspect or the second aspect, or the devices included in the first communication device, such as chips or chip systems.

[0060] In an eighth aspect, a communication device is provided. The communication device may be the first communication device, or may be a module or unit (for example, a chip, or a chip system, or a circuit) corresponding one by one to the method / operation / step / action described in the first aspect or the second aspect in the first communication device, or may be a module or unit that can be used in matching with the first communication device.

[0061] It can be understood that when the communication device provided in any one of the third to eighth aspects is a chip, the sending action / function of the communication device can be understood as outputting information, and the receiving action / function of the communication device can be understood as inputting information.

[0062] In a ninth aspect, a computer-readable storage medium is provided. A computer program or instruction is stored in the computer-readable storage medium. When it runs on the communication device, the communication device can execute the method described in any one of the first aspect or the second aspect.

[0063] In a tenth aspect, a computer program product containing instructions is provided. When it runs on the communication device, the communication device can execute the method described in any one of the first aspect or the second aspect.

[0064] In an eleventh aspect, a communication system is provided. The communication system may include a first communication device and a second communication device. The first communication device is used to implement the method described in the first aspect and any one of its design manners, or the first communication device is used to implement the method described in the second aspect and any one of its design manners. The first communication device is a terminal, and the second communication device is a RAN node; or, both the first communication device and the second communication device are terminals.

[0065] Among them, for the technical effects brought by the third to eleventh aspects and any one of their design manners, reference may be made to the technical effects brought by different design manners in the first aspect or the second aspect, which will not be elaborated here. Description of the Drawings

[0066] Figure 1 It is a schematic diagram of a V2X scenario provided by this application;

[0067] Figure 2 It is a schematic diagram of a vehicle connection service scenario provided by this application;

[0068] Figures 3 - 6 It is a schematic diagram of the structure of the communication system provided by this application;

[0069] Figure 7 It is a schematic flowchart of a power control method provided by this application;

[0070] Figure 8 It is a schematic flowchart of another power control method provided by this application;

[0071] Figure 9 It is a schematic diagram of the structure of a communication device provided by this application;

[0072] Figure 10 It is a schematic diagram of the structure of another communication device provided by this application;

[0073] Figure 11 This is a schematic structural diagram of another communication device provided for this application. Detailed implementation manners

[0074] In the description of this application, unless otherwise specified, " / " indicates that the objects associated before and after are in an "or" relationship. For example, A / B may represent A or B; "and / or" in this application is merely a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. Among them, A and B can be singular or plural.

[0075] In the description of this application, unless otherwise specified, "a plurality of" means two or more than two. "At least one (item)" or its similar expressions refer to any combination of these items, including any combination of single item (item) or plural items (items). For example, at least one (item) of a, b, or c can represent: a, b, c, a - b, a - c, b - c, or a - b - c, where a, b, and c can be single or multiple.

[0076] In addition, for the convenience of clearly describing the technical solutions of the embodiments of this application, in the embodiments of this application, terms such as "first" and "second" are used to distinguish the same items or similar items with basically the same functions and effects. Those skilled in the art can understand that terms such as "first" and "second" do not limit the quantity and execution order, and terms such as "first" and "second" do not necessarily limit to be different.

[0077] In the embodiments of this application, words such as "exemplary" or "for example" are used to represent examples, illustrations, or explanations. Any embodiment or design solution described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Exactly speaking, using words such as "exemplary" or "for example" aims to present relevant concepts in a specific way for easy understanding.

[0078] It can be understood that "embodiments" mentioned throughout the specification mean that specific features, structures, or characteristics related to the embodiments are included in at least one embodiment of this application. Therefore, the embodiments throughout the specification do not necessarily refer to the same embodiments. In addition, these specific features, structures, or characteristics can be combined in one or more embodiments in any suitable manner. It can be understood that in various embodiments of this application, the magnitude of the sequence number of each process does not mean the sequence of execution order. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of this application.

[0079] It can be understood that in this application, "when..." and "if" both refer to corresponding processing being performed under certain objective circumstances, rather than limiting time, and do not require a judgment action during implementation, nor do they imply other limitations.

[0080] It can be understood that some optional features in the embodiments of this application can, in certain scenarios, be implemented independently without relying on other features, such as the current solution they are based on, to solve corresponding technical problems and achieve corresponding effects. In certain scenarios, they can also be combined with other features according to requirements. Correspondingly, the devices given in the embodiments of this application can also implement these features or functions accordingly, which will not be elaborated here.

[0081] In this application, unless otherwise specified, the same or similar parts among various embodiments can be referred to each other. In each embodiment of this application, if there is no special specification and logical conflict, the terms and / or descriptions among different embodiments are consistent and can be mutually referenced, and the technical features in different embodiments can be combined to form new embodiments according to their internal logical relationships. The embodiments of this application described below do not constitute a limitation on the protection scope of this application.

[0082] To facilitate understanding of the technical solutions of the embodiments of this application, a brief introduction to the related technologies of this application is first given as follows.

[0083] 1. Cellular Vehicle to Everything (C-V2X):

[0084] C-V2X is a vehicle-to-everything (V2X) communication technology developed based on cellular systems. It utilizes and enhances the functions and elements of the current cellular network to achieve low-latency and high-reliability communication among various nodes in the vehicle network. For example, as Figure 1 shown, it enables vehicle-to-vehicle (V2V) communication, vehicle-to-pedestrian (V2P) communication, vehicle-to-infrastructure (V2I) communication, and vehicle-to-network (V2N) communication.

[0085] As the cellular system evolves from the 4th generation (4G) Long Term Evolution (LTE) system to the 5th generation (5G) New Radio (NR), C-V2X also evolves from LTE-V2X to NR-V2X.

[0086] NR V2X can support lower transmission latency, more reliable communication transmission, higher throughput, and better user experience, meeting the requirements of a wider range of application scenarios. Further, the vehicle-to-vehicle communication technology supported by V2X can be extended to device-to-device (D2D) communication under any system.

[0087] For future vehicle connection services, they may be realized through the air interface (Uu interface). For example, services with high requirements for rate, latency, and reliability, such as vehicle networking services and in-vehicle entertainment services, can be realized through the Uu interface. In addition, the service requirements of vehicles in the same area may be the same. Therefore, the base station can use multicast to serve multiple vehicles simultaneously, improving resource utilization efficiency. Exemplarily, as Figure 2 shown, the base station can serve multiple vehicle groups, and the same service data is sent within the same group.

[0088] Generally, vehicles can obtain perception information. Currently, the perception information at the vehicle end mainly comes from external vehicle-mounted radars, and their frequencies are mainly divided into the 24 gigahertz (GHz) band and the 77 GHz band. Strictly speaking, the 77 GHz radar belongs to the millimeter-wave radar, but actually the 24 GHz radar is also called the millimeter-wave radar. Among them, the 77 GHz millimeter-wave radar is mainly deployed in the front of the vehicle for detecting medium- and long-distance objects, and the 24 GHz millimeter-wave radar is generally deployed on the sides and rear of the vehicle for blind spot detection, auxiliary parking systems, etc.

[0089] A millimeter-wave radar is a radar sensor that measures distance, relative distance, direction, etc. through electromagnetic waves in the millimeter-wave band. It can emit electromagnetic waves in the millimeter-wave band forward. If there are vehicles, objects, etc. in the front, it can receive the echo formed by reflection. By analyzing the frequency change of the detected echo, etc., it can detect whether there are vehicles, objects in the front, as well as the distance, relative speed, and direction between the vehicle and the front object.

[0090] Exemplarily, the principle of millimeter-wave radar measurement is as follows: emit electromagnetic waves in the millimeter-wave band and receive the echo formed by reflection, and measure the position data and relative distance of the target according to the time difference between transmission and reception. According to the propagation speed of electromagnetic waves, the distance s of the target can be expressed as s = ct / 2. Here, t represents the time difference between transmission and reception, that is, the time from the radar emitting electromagnetic waves to receiving the echo, and c represents the speed of light.

[0091] 2. Perception and communication fusion:

[0092] Future business requirements and technological development trends have given rise to the integration of sensing and communication. Exemplarily, sensing, also known as wireless sensing, refers to emitting electromagnetic energy into space and calculating the information of an object by receiving the radio waves reflected by the object existing in the space. For example, parameters such as position, direction, height, speed, size, and movement path can be obtained, and the internal and external shapes and structures of the object can be detected. By exploring the transmission, echo, reflection, and scattering of radio waves, the physical world can be sensed and better understood. As one of the electromagnetic wave sensing technologies, wireless sensing technology can be an important alternative technology for security inspections, detecting hidden objects, environmental reconstruction, etc. due to its penetrability and security.

[0093] With the integration of sensing and communication, having both communication and sensing capabilities will be the future trend for base stations and terminals. For example, future base stations will be capable of monitoring the status of targets (such as low-altitude flying objects, traffic flows, and crowded areas of people) within the coverage area, and can detect, locate, and identify the targets. In addition, they can also have the ability to measure the natural environment status, weather, etc. of the coverage area in real time.

[0094] Future terminals will be upgraded to intelligent agents, and the capabilities of driverless vehicles, drones, robots, and other intelligent devices will continue to increase. Intelligent agents may need to recognize the postures, movements, and expressions of people to enhance human-computer interaction, and also need to recognize the movement states between multiple intelligent agents to improve intelligent collaboration. Further, intelligent agents may need to recognize the attributes inside the human body, products, and items to provide remote, artificial intelligence (AI)-based unmanned physical examinations, quality inspections, and security inspections. These services further drive the integration of sensing and communication for intelligent agents, which can not only improve the information interaction capabilities between intelligent agents and between intelligent agents and the system, but also is expected to reduce the volume, power consumption, and cost of intelligent agent hardware devices, thereby promoting the generalization of new services.

[0095] For the future sixth generation (6G) wireless network, communication capabilities and sensing capabilities will coexist and evolve into the technical direction of "integrated communication and sensing", endowing the 6G network with the ability to sense the physical world at all times and everywhere, fully meeting the integration and interconnection of multi-dimensional senses, effectively supporting the wide-area expansion of communication capabilities, and opening up an application space beyond the connection of traditional mobile communication networks.

[0096] Exemplarily, integrated sensing and communication (ISAC) is a typical architecture for the integration of sensing and communication. ISAC provides both high-quality communication and high-precision sensing functions by sharing software and hardware resources in the same system, reducing costs and improving system performance. Among them, the communication function can be understood as traditional data transmission, etc., and the sensing function includes ranging, speed measurement, angle measurement, imaging, detection, etc.

[0097] 3. Uplink Power Control:

[0098] When the electromagnetic wave signal transmitted by the transmitting end propagates in the wireless channel, it is affected by path loss and shadow fading, and the signal strength will decrease when it reaches the receiving end. Therefore, when the distance between the transceiver ends changes, the transmitting end system appropriately adjusts the signal transmission power to compensate for the effects brought by path loss and shadow fading. It should be noted that the transmission power in this application can also be referred to as the transmit power, and the two can be used interchangeably.

[0099] Among them, the transmission power of the physical uplink shared channel (PUSCH) on the terminal side satisfies the following relationship:

[0100]

[0101] Among them, P PUSCH (i) represents the PUSCH transmission power in the i-th time unit. Exemplarily, the time unit in this application can be an orthogonal frequency division multiplexing (OFDM) symbol, time slot, mini-slot, or subframe, etc.

[0102] P CMAX represents the maximum transmission power of the terminal. represents the received power expected by the base station on a single resource block (RB).

[0103] μ represents the subcarrier configuration factor, which is used to indicate the subcarrier size. represents the number of RBs occupied by PUSCH in the i-th time unit. Δ TF represents the power offset value determined according to the modulation and coding scheme (MCS). min{} represents the minimum value operation.

[0104] α represents the path loss compensation factor. PL represents the path loss estimation. For example, PL = transmit power of the reference signal - received power of the measured reference signal (RSRP). The reference signal can be sent by the base station and received by the terminal; or, it can be sent by the terminal and received by the base station. In this case, the base station needs to send the measured RSRP to the terminal.

[0105] f represents the closed-loop power control parameter, which can be understood as the adjustment amount of the PUSCH transmit power. f can be determined based on the transmit power control (TPC) sent by the base station.

[0106] Exemplarily, the base station can determine the TPC of the terminal based on the power control configuration parameters, the information fed back by the terminal, and the measurement information of the base station, and send the TPC through the downlink control information (DCI) in the physical downlink control channel (PDCCH).

[0107] The power control of PUSCH can be understood as a process in which the base station adjusts the PUSCH transmit power by adjusting the TPC. For example, when the terminal initially accesses or switches to a target cell during cell handover, open-loop power control is used to determine the initial transmit power according to the power parameters configured by the base station and the path loss.

[0108] During the continuous service process, the terminal uses a combination of open-loop power control and closed-loop power control. That is, on the basis of determining the transmit power according to the power parameters configured by the base station and the path loss, the terminal also adaptively adjusts the PUSCH transmit power according to the TPC indicated by the base station to adapt to the changes in the PUSCH channel environment and service load.

[0109] 4. Sidelink (SL) power control:

[0110] In sidelink power control, both the downlink path loss and the sidelink path loss are considered. Exemplarily, the transmit power of the physical sidelink shared channel (PSSCH) satisfies the following relationship:

[0111] P PSSCH (i) = min(PC MAX , P MAX，CBR , min(P PSSCH，D (i), P PSSCH，SL (i))) dBm (2)

[0112] where, represents the PSSCH transmission power in the i-th time unit. P CMAX represents the maximum transmission power of the terminal. P MAX，CBR represents the power determined based on data priority and channel busy ratio (CBR). P PSSCH，D (i) and P PSSCH，SL (i) represent the powers determined based on downlink path loss and sidelink path loss respectively, and satisfy the following relationships respectively:

[0113]

[0114] where, P O，D represents the received power level on a single RB expected by the base station. μ represents the subcarrier configuration factor. represents the number of RBs occupied by PSSCH in the i-th time unit. α D represents the downlink path loss compensation factor. PL D represents the downlink path loss estimation. For example, PL D = reference signal transmission power - measured RSRP. The reference signal can be sent by the base station to the terminal, or can be sent by the terminal to the base station.

[0115] where, represents the received power level on a single RB expected by the transmitter. represents the sidelink path loss compensation factor. represents the sidelink path loss estimation. For example, PL SL = reference signal transmission power - measured RSRP. The reference signal can be sent by this terminal to other terminals, or can be sent by other terminals to this terminal.

[0116] In addition, on the sidelink, PSSCH may be transmitted in the same time unit as the physical sidelink control channel (PSCCH). In this scenario, the transmission powers of PSSCH and PSCCH satisfy the following relationships respectively:

[0117]

[0118]

[0119] where, represents the number of RBs occupied by PSCCH in the i-th time unit. P PSSCH (i) is implemented as shown in the above relationship (2) and will not be elaborated here.

[0120] 5. SL Congestion Control:

[0121] In a distributed system, there is no central node (such as a base station), and neither the number of terminals nor the resources used by each terminal can be uniformly controlled. Therefore, congestion control is required to ensure system performance. In the congestion control mechanism of SL, the terminal measures the CBR and the channel occupancy ratio (CR), and adjusts the CR according to the CBR threshold, thereby restricting the resource occupancy rate of the terminal and avoiding system congestion.

[0122] Among them, CR is the ratio of the sum of the number of sub-channels that have been transmitted and will be transmitted within the CR window by the terminal to the total number of sub-channels within the CR window, indicating the channel occupancy degree of the sending terminal within the CR window. Exemplarily, taking the CR window as the time slot [n - a, n + b] as an example, CR is the ratio of the sum of the number of sub-channels that have been transmitted by the terminal within the window [n - a, n - 1] and the number of sub-channels that will be transmitted within the window [n, n + b], to the total number of sub-channels within the CR window [n - a, n + b]. n, a, and b are positive integers.

[0123] CBR represents the busyness degree of the channel within a period of time, and its value can be the ratio of the number of sub-channels whose received signal strength indication (RSSI) measured within the window [n - a, n - 1] is greater than the RSSI threshold to the total number of measured sub-channels.

[0124] Specifically, in the SL congestion control mechanism, if the following constraints are met, the terminal can perform SL transmission; if not, the terminal cannot perform SL transmission.

[0125]

[0126] Among them, CR(i) represents the CR of the PSSCH transmission with priority i in time slot n - N, and N represents the congestion control processing time. represents the CR constraint, which is related to the priority k and the CBR in time slot n - N. CR Limit (k) can be configured by the upper layer.

[0127] As described above, currently only the power control method of communication signals is defined. For terminals with both communication and sensing functions, they may need to send sensing signals and communication signals simultaneously. In this scenario, how to determine the transmission power of the sensing signal is an urgent problem to be solved. Based on this, the present application provides a power control method, which can determine the transmission power of the sensing signal, can also meet the constraint of the maximum transmission power of the terminal, dynamically and flexibly adjust the transmission power of the communication signal and the sensing signal, meet the transmission requirements, and improve the transmission performance.

[0128] The technical solution of the embodiment of the present application can be used in various communication systems, which can be a third generation partnership project (3GPP) communication system, for example, a fourth generation (4G) system such as a long term evolution (LTE) system, a fifth generation (5G) system such as a new radio (NR) system, a system of hybrid networking of LTE and 5G, a non-terrestrial network (NTN), or other next-generation communication systems such as a 6G communication system. The communication system can also be a non-3GPP communication system, without limitation.

[0129] The technical solution of the embodiment of the present application can be used in various scenarios. For example, it can be applied to the scenario of communication between a terminal and a network, or can be applied to scenarios of direct communication between terminals such as device-to-device (D2D), machine-to-machine (M2M), and vehicle-to-everything (V2X).

[0130] Among them, the above-mentioned communication systems and scenarios applicable to the present application are only illustrative. The communication systems and scenarios applicable to the present application are not limited thereto. The communication systems and scenarios provided by the present application do not impose any limitations on the solution of the present application. This is hereby unifiedly explained and will not be elaborated hereinafter.

[0131] A possible and non-limiting system applicable to the present application may include a first communication device and a second communication device. The first communication device and the second communication device can communicate wirelessly.

[0132] As a possible implementation, as Figure 3 shown, the first communication device 310 can be a terminal or a module in the terminal (such as a chip, a chip system, or a processor), and the second communication device 320 can be a radio access network (RAN) node or a module in the RAN node (such as a chip, a chip system, or a processor). At this time, the first communication device and the second communication device can transmit communication signals through an uplink or a downlink, or a Uu interface.

[0133] As another possible implementation, the first communication device and the second communication device can both be terminals, or both be modules in the terminals (such as a chip, a chip system, or a processor). At this time, the first communication device and the second communication device can transmit communication signals through a sidelink or a PC5 interface.

[0134] Exemplarily, the first communication device and the second communication device can be two terminals in a direct communication scenario between any terminals, including but not limited to D2D, M2M, V2X, Internet of Things (IoT), relay of terminals, cooperation, etc.

[0135] Exemplarily, as Figure 4 shown, both the first communication device and the second communication device can be within the coverage of the RAN node. Or, as Figure 5 shown, one of the first communication device and the second communication device can be within the coverage of the RAN node, and the other can be outside the coverage of the RAN node. Or, as Figure 6 shown, both the first communication device and the second communication device are outside the coverage of the RAN node.

[0136] The RAN node can be a device deployed in the RAN of a 3GPP-related cellular system. For example, the RAN can be a 4G, 5G mobile communication system, or an evolved system for the future (such as a 6G mobile communication system). Or, the RAN can also be an Open RAN (O-RAN or ORAN), a Cloud Radio Access Network (CRAN), or a Wireless Fidelity (WiFi) system. Or, the RAN can also be a communication system that is a fusion of two or more of the above systems.

[0137] The RAN node, sometimes also referred to as an access network device, a RAN entity, or an access node, etc., constitutes a part of the communication system and is used to help terminals achieve wireless access. The RAN node and the terminal are sometimes both referred to as communication devices. For example, Figure 3 network element 310 can be understood as a communication device with base station functions, and network element 320 can be understood as a communication device with terminal functions.

[0138] In a possible scenario, the RAN node can be a base station, evolved NodeB (eNodeB), access point (AP), transmission reception point (TRP), next generation NodeB (gNB), next generation base station in a 6G mobile communication system, base station in a future mobile communication system, or access node in a WiFi system, etc. The RAN node can be a macro base station, micro base station or indoor station, relay node or donor node, or a radio controller in a CRAN scenario. Optionally, the RAN node can also be a server, wearable device, vehicle or in-vehicle device, etc. For example, the access network device in V2X technology can be a road side unit (RSU). All or part of the functions of the RAN node in this application can also be implemented by software functions running on hardware, or by virtualized functions instantiated on a platform (such as a cloud platform). The RAN node in this application can also be a logical node, logical module or software that can implement all or part of the functions of the RAN node.

[0139] In another possible scenario, multiple RAN nodes cooperate to assist the terminal in achieving wireless access, and different RAN nodes respectively implement part of the functions of the base station. For example, the RAN node can be a central unit (CU), distributed unit (DU), CU-control plane (CP), CU-user plane (UP), or radio unit (RU), etc. The CU and DU can be set separately, or can also be included in the same network element, such as a baseband unit (BBU). The RU can be included in a radio frequency device or radio frequency unit, such as included in a remote radio unit (RRU), active antenna unit (AAU) or remote radio head (RRH).

[0140] In different systems, the CU (or CU-CP and CU-UP), DU, or RU may also have different names, but those skilled in the art can understand their meanings. For example, in the ORAN system, the CU may also be referred to as O-CU (Open CU), the DU may also be referred to as O-DU, the CU-CP may also be referred to as O-CU-CP, the CU-UP may also be referred to as O-CU-UP, and the RU may also be referred to as O-RU. For the sake of convenience in description, in this application, the CU, CU-CP, CU-UP, DU, and RU are used as examples for description. Any one of the CU (or CU-CP, CU-UP), DU, and RU in this application may be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0141] The terminal may also be referred to as a terminal device, user equipment (UE), mobile station, mobile terminal, etc. The terminal can be widely applied to various scenarios. For example, device-to-device (D2D), vehicle-to-everything (V2X) communication, machine-type communication (MTC), Internet of Things (IoT), virtual reality, augmented reality, industrial control, autonomous driving, remote medical treatment, smart grid, smart furniture, smart office, smart wearables, smart transportation, smart city, etc. The terminal can be a mobile phone, tablet computer, computer with wireless transceiver function, wearable device, vehicle, drone, helicopter, airplane, ship, robot, robotic arm, smart home device, etc. The embodiments of this application do not limit the device form of the terminal.

[0142] It should be noted that the communication system described in the embodiments of this application is to more clearly illustrate the technical solutions of the embodiments of this application, and does not constitute a limitation on the technical solutions provided by the embodiments of this application. Those of ordinary skill in the art know that with the evolution of the network architecture and the emergence of new service scenarios, the technical solutions provided by the embodiments of this application are equally applicable to similar technical problems.

[0143] The following Figures 3 - 6 Taking the interaction between the terminal and the RAN node or the interaction between the terminal and the terminal in the shown communication system as an example, the power control method provided by the embodiments of this application will be described. It should be noted that in the following embodiments of this application, the message names, the names of each parameter, or the names of each piece of information between the terminal and the RAN node, and between the terminal and the terminal are only examples, and in other embodiments, they may also be other names. The method provided by this application does not make specific limitations on this.

[0144] It can be understood that in the embodiments of the present application, the terminal or the RAN node may execute some or all of the steps in the embodiments of the present application. These steps or operations are only examples, and the embodiments of the present application may also execute other operations or various deformations of the operations. In addition, each step may be executed in a different order presented in the embodiments of the present application, and it is possible not to execute all the operations in the embodiments of the present application.

[0145] It can be understood that in the present application, the RAN node and the terminal, or the terminal and the terminal are taken as examples of the execution entities of the interaction schematic for illustration, but the present application does not limit the execution entities of the interaction schematic. For example, the method executed by the RAN node in the present application can also be executed by a module applied to the RAN node (such as a chip, a chip system, or a processor), and can also be implemented by a logical node, a logical module, or software that can implement all or part of the functions of the RAN node; the method executed by the terminal in the present application can also be executed by a module applied to the terminal (such as a chip, a chip system, or a processor), and can also be implemented by a logical node, a logical module, or software that can implement all or part of the functions of the terminal.

[0146] See Figure 7 , which is a flowchart of a power control method provided by the embodiments of the present application. The power control method may include the following steps:

[0147] S701. The first communication device determines a first transmission power and a second transmission power.

[0148] Among them, the sum of the first transmission power and the second transmission power is less than or equal to the maximum transmission power of the terminal. The first transmission power can be understood as the transmission power of the sensing signal, and the second transmission power can be understood as the transmission power of the communication signal. It can be understood that the first communication device is a terminal or a module in the terminal, such as a chip, a chip system, or a processor. The maximum transmission power of the terminal is the maximum transmission power of the first communication device.

[0149] Among them, the first transmission power is the product of a first power control factor and a third transmission power. The second transmission power is the product of a second power control factor and a fourth transmission power. Exemplarily, the first power control factor is used to adjust the transmission power of the sensing signal; the second power control factor is used to adjust the transmission power of the communication signal. The value range of the first power control factor can be [0, 1], and the value range of the second power control factor can also be [0, 1]. The initial values of the first power control factor and the second power control factor can be 1, or other values, and the present application does not make specific limitations in this regard.

[0150] It should be noted that the power control factor in the present application can also be referred to as a power adjustment factor. Of course, there can also be other names, and the present application does not make specific limitations on the name of the power control factor.

[0151] Exemplarily, the sensing signal can be understood as a signal for sensing, and the sensing signal can also have other names without limitation. The sensing signal can be an OFDM signal obtained by modulating a specific sequence on a subcarrier. The specific sequence can be a ZC sequence, a Gold sequence, etc., or the specific sequence can also be random data symbols, for example, random data symbols modulated by means of quadrature phase shift keying (QPSK), 16-quadrature amplitude modulation (QAM), etc. This application does not make specific limitations on this.

[0152] Exemplarily, the first communication device can first determine the third transmission power and the first power control factor, and then determine the product of the first power control factor and the third transmission power as the first transmission power. And, first determine the fourth transmission power and the second power control factor, and then determine the product of the second power control factor and the fourth transmission power as the second transmission power. That is, the first transmission power can be understood as the final transmission power of the sensing signal, or the transmission power of the adjusted sensing signal, and the third transmission power can be understood as the initial transmission power of the sensing signal. The second transmission power can be understood as the final transmission power of the communication signal, or the transmission power of the adjusted communication signal, and the fourth transmission power can be understood as the initial transmission power of the communication signal.

[0153] This embodiment does not make specific limitations on the determination order of the third transmission power and the fourth transmission power. The first communication device can first determine the third transmission power and then determine the fourth transmission power; or, first determine the fourth transmission power and then determine the third transmission power; or, determine the third transmission power and the fourth transmission power simultaneously.

[0154] Among them, the third transmission power is determined according to the maximum transmission power of the terminal and the fifth transmission power. The specific determination method of the third transmission power will be described in subsequent embodiments and will not be elaborated here.

[0155] As a possible implementation, the fifth transmission power is determined according to the first path loss. Exemplarily, the first path loss can be the sensing path loss, or the path loss of the sensing signal or the sensing link. That is, the fifth transmission power can be understood as the transmission power considering the sensing path loss. The specific determination method of the fifth transmission power will be described in subsequent embodiments and will not be elaborated here.

[0156] As another possible implementation, the fifth transmission power is the desired transmission power of the sensing signal, or rather, the fifth transmission power is the desired transmission power of the sensing signal (at the sensing signal transmitter or the sensing signal receiver), or rather, the fifth transmission power is the transmission power requirement of the sensing signal. In this possible implementation, the fifth transmission power can be configured by a higher layer.

[0157] Among them, the fourth transmission power is determined according to the maximum transmission power of the terminal and the second path loss. Exemplarily, the second path loss may be a communication path loss.

[0158] S702. The first communication device transmits a sensing signal on the first time unit according to the first transmission power.

[0159] Among them, the first time unit can be understood as the time unit where the sensing signal is located, or the time unit used to carry the sensing signal. The first time unit can be scheduled by the RAN node for the first communication device, or can be determined by the first communication device itself. For example, in the SL system, the first communication device selects the first time unit from the resource pool or determines the first time unit based on the SL congestion control mechanism. The time unit can be, for example, an OFDM symbol, a time slot, a micro time slot, or a subframe, etc., without limitation.

[0160] That is to say, the first communication device is the sender of the sensing signal. The receiver of the echo signal corresponding to the sensing signal can be the first communication device itself, or can be a third communication device. The third communication device can be, for example, the second communication device or other communication devices outside the second communication device. This application does not make specific limitations in this regard. Exemplarily, the echo signal can be understood as the signal formed after the sensing signal is reflected by an object.

[0161] Exemplarily, after the receiver of the echo signal receives the echo signal, it can perform sensing processing based on the echo signal. For example, the echo signal is sampled to obtain a received sequence, and the received sequence and a local sequence (the sequence used to generate the sensing signal) are correlated to obtain sensing information, such as the position, speed, distance, etc. of the sensing target.

[0162] S703. The first communication device transmits a communication signal on the first time unit according to the second transmission power. Correspondingly, the second communication device receives the communication signal on the first time unit. That is, the first communication device also serves as the sender of the communication signal, and the second communication device is the receiver of the communication signal.

[0163] When the first communication device is a terminal and the second communication device is a RAN node, the communication signal is an uplink reference signal and / or a signal carried on the uplink channel. The uplink channel can be, for example, a physical random access channel (PRACH), a physical uplink control channel (PUCCH), or a PUSCH. The uplink reference signal can include, but is not limited to, a sounding reference signal (SRS).

[0164] When both the first communication device and the second communication device are terminals, the communication signal is the signal carried on the PSSCH.

[0165] It can be understood that since both the sensing signal and the communication signal are sent by the first communication device in the first time unit, it can be considered that the first communication device sends the sensing signal and the communication signal simultaneously.

[0166] Based on this solution, the first communication device can determine the transmission power of the sensing signal and realize the transmission of the sensing signal. In addition, the first communication device takes the product of the first power control factor and the third transmission power as the transmission power of the sensing signal (i.e., the first transmission power), and takes the product of the second power control factor and the fourth transmission power as the transmission power of the communication signal (i.e., the second transmission power). Thus, the transmission powers of the sensing signal and the communication signal can be dynamically and flexibly adjusted through the first power control factor and the second power control factor, so that the sum of the first transmission power and the second transmission power meets the maximum transmission power constraint of the terminal, and further realizes the simultaneous transmission of the sensing signal and the communication signal, meeting the requirements of simultaneous sensing and communication.

[0167] The overall process of the power control method provided in this application is described above. Next, the determination method of the third transmission power in the above solution will be described in detail. Exemplarily, the third transmission power can be determined in the following two ways:

[0168] Method 1: The third transmission power is determined according to the maximum transmission power of the terminal and the fifth transmission power. The third transmission power satisfies the following relationship:

[0169] P sense (i) = min(P CMAX , P sense，PL (i)) (8)

[0170] Where, P sennse (i) represents the third transmission power. i represents the index of the first time unit. P CMAX represents the maximum transmission power of the terminal. P sennse，PL (i) represents the fifth transmission power. min() represents the minimum value operation.

[0171] In a possible implementation manner, when the first communication device is a terminal and the second communication device is a RAN node, or when the first communication device belongs to an integrated uplink communication and sensing system, the first communication device determines the third transmission power by using this method 1.

[0172] In a possible implementation, when the fifth transmission power is determined according to the first path loss, the fifth transmission power can be determined according to the first path loss and at least one of the following: the first desired reception power on a single RB, the first path loss compensation factor, the number of RBs occupied by the sensing signal, the first subcarrier configuration factor, or the first closed-loop power control parameter.

[0173] As a possible implementation, the first path loss can be expressed as: the transmission power of the reference signal / sequence minus the measured reception power of the reference signal / sequence. Among them, the transmitter of the reference signal / sequence can be the first communication device, and the receiver can be the third communication device. At this time, the third communication device also feeds back the reception power of the reference signal / sequence to the first communication device. Or, the transmitter of the reference signal / sequence can be the third communication device, and the receiver can be the first communication device. Or, both the transmitter and the receiver of the reference signal / sequence can be the first communication device. At this time, the reference signal is used as the sensing signal, the reference sequence is the sequence used to generate the sensing signal, and the reference signal received by the first communication device can be understood as the echo signal of the reference signal it transmits.

[0174] As a possible implementation, the first desired reception power on a single RB can be the reception power level on a single RB expected by the RAN node. Exemplarily, the RAN node (i.e., the second communication device) can indicate this first desired reception power to the terminal (i.e., the first communication device).

[0175] As a possible implementation, the number of RBs occupied by the sensing signal is the number of RBs occupied by the sensing signal in the first time unit. The first subcarrier configuration factor is used to indicate the subcarrier size corresponding to the sensing signal.

[0176] As a possible implementation, the first closed-loop power control parameter can be indicated by the RAN node to the terminal. Exemplarily, the terminal can first report the power headroom to the RAN node, and the RAN node can determine the first closed-loop power control parameter based on this power headroom and indicate this first closed-loop power control parameter to the terminal.

[0177] Exemplarily, the fifth transmission power can satisfy the following relationship:

[0178]

[0179] Among them, P sense，PL (i) represents the fifth transmission power, i represents the index of the first time unit, P 0，sense represents the first desired reception power on a single RB, μ1 represents the first subcarrier configuration factor, represents the number of RBs occupied by the sensing signal in time unit i (i.e., the first time unit), α sense represents the first path loss compensation factor, PLsense represents the first path loss or the estimated value of the first path loss, f sense represents the first closed-loop power control parameter.

[0180] In a possible implementation manner, in this manner, the fourth transmission power is determined according to the maximum transmission power of the terminal, the second path loss, and at least one of the following: the second desired received power on a single RB, the second path loss compensation factor, the number of RBs occupied by the communication signal, the second subcarrier configuration factor, the second closed-loop power control parameter, or the power offset value. The power offset value is determined by the MCS of the communication signal.

[0181] When the first communication device is a terminal and the second communication device is a RAN node, the second path loss can be the path loss of the uplink or downlink, or the path loss between the terminal and the RAN node. For example, the second path loss can be the PL in the above relationship (1), and the fourth transmission power can be determined based on the above relationship (1).

[0182] The second desired received power on a single RB, the second path loss compensation factor, the number of RBs occupied by the communication signal, the second subcarrier configuration factor, the second closed-loop power control parameter, and the power offset value can be respectively the α, μ, f, Δ TF in the above relationship (1). For reference to the foregoing related description, it will not be elaborated here.

[0183] Manner two: The third transmission power is determined according to the maximum transmission power of the terminal, the fifth transmission power, and the sixth transmission power. The third transmission power satisfies the following relationship:

[0184] P sentse (i) = min(P CMAX , P sense,C , P sense，PL (i)) (10)

[0185] wherein, P sense (i) represents the third transmission power, i represents the index of the first time unit, P CMAX represents the maximum transmission power of the terminal, P sense， P L (i) represents the fifth transmission power, P sense，C represents the sixth transmission power, and min() represents the minimum value operation.

[0186] In a possible implementation manner, when both the first communication device and the second communication device are terminals, or when the first communication device belongs to a sidelink / D2D communication and sensing integrated system, the first communication device determines the third transmission power by using this manner two.

[0187] In a possible implementation, when the fifth transmission power is determined according to the first path loss, the fifth transmission power can be determined according to the first path loss and at least one of the following: the first desired reception power on a single RB, the first path loss compensation factor, the number of RBs occupied by the sensing signal, or the first subcarrier configuration factor.

[0188] Among them, the first desired reception power on a single RB can be the reception power level on a single RB desired by the first communication device or the second communication device. The first path loss, the first path loss compensation factor, the number of RBs of the sensing signal, and the first subcarrier configuration factor can refer to the relevant descriptions in the above-mentioned Method 1, and will not be elaborated here.

[0189] Exemplarily, the fifth transmission power can satisfy the following relationship:

[0190]

[0191] Among them, P sense，PL (i) represents the fifth transmission power, i represents the index of the first time unit, P 0，sense represents the first desired reception power on a single RB, μ1 represents the first subcarrier configuration factor, represents the number of RBs occupied by the sensing signal in the time unit i (i.e., the first time unit), α sense represents the first path loss compensation factor, PL sense represents the first path loss or the estimated value of the first path loss.

[0192] In a possible implementation, the sixth transmission power is determined according to at least one of CBR, CR, or sensing priority. Exemplarily, CR can refer to the CR corresponding to the time unit [i - a, i + b], that is, the CR window is the time unit [i - a, i + b], and i represents the index of the first time unit. CBR can refer to the CBR corresponding to the time unit [i - a, i - 1]. Among them, a and b are positive integers, and the calculation methods of CR and CBR can refer to the relevant descriptions in the foregoing SL congestion control mechanism, and will not be elaborated here.

[0193] As a possible implementation, CBR and / or CR are inversely proportional to the sixth transmission power. For example, the larger CBR and / or CR are, the smaller the sixth transmission power is, or the smaller CBR and / or CR are, the larger the sixth transmission power is. The sensing priority is directly proportional to the sixth transmission power. For example, the higher the sensing priority is, the larger the sixth transmission power is, or the lower the sensing priority is, the smaller the sixth transmission power is.

[0194] Exemplarily, the larger the CBR and / or CR, the busier the channel is. At this time, the sixth transmission power is smaller, that is, when the channel is busy, the candidate transmission power determined according to the CBR and / or CR is smaller. In the case of a smaller candidate transmission power, the interference of the sensing signal transmitted by the first communication device to other signals in the channel can be reduced.

[0195] In addition, the higher the sensing priority, the more important the sensing service is. At this time, the sixth transmission power is larger, that is, the more important the sensing service is, the candidate transmission power determined according to the sensing priority is larger. In the case of a larger candidate transmission power, the performance of the sensing service can be guaranteed, that is, the performance of high-priority services can be guaranteed.

[0196] As an example, the sixth transmission power is equal to the product of the third power control factor and the fifth transmission power. The value range of the third power control factor is [0, 1]. The third power control factor is determined according to at least one of the CBR, CR, or sensing priority. In addition, the CBR and / or CR is inversely proportional to the third power control factor, and the sensing priority is directly proportional to the third power control factor.

[0197] Exemplarily, the corresponding relationship between the CBR, CR, or sensing priority and the third power control factor can be shown in at least one row of Tables 1-7 below. Among them, the larger the priority number, the lower the priority. Optionally, the corresponding relationship can also be a combination of the corresponding relationships reflected in different tables.

[0198] Table 1

[0199] CR Third power control factor <0.8 0.1 <0.6 0.2 <0.5 0.3 <0.4 0.5 <0.3 0.7 <0.2 0.9 <0.1 1

[0200] Table 2

[0201] CBR Third power control factor <0.8 0.1 <0.6 0.2 <0.5 0.3 <0.4 0.5 <0.3 0.7 <0.2 0.9 <0.1 1

[0202] Table 3

[0203] Perceived priority Third power control factor 7 0.1 6 0.2 5 0.3 4 0.5 3 0.7 2 0.9 1 1

[0204] Table 4

[0205] CR CBR Third power control factor <0.8 <0.8 0.1 <0.6 <0.6 0.2 <0.5 <0.5 0.3 <0.4 <0.4 0.5 <0.3 <0.3 0.7 <0.2 <0.2 0.9 <0.1 <0.1 1

[0206] Table 5

[0207] CR Perceived priority Third power control factor <0.8 7 0.1 <0.6 6 0.2 <0.5 5 0.3 <0.4 4 0.5 <0.3 3 0.7 <0.2 2 0.9 <0.1 1 1

[0208] Table 6

[0209] CBR Perceived priority Third power control factor <0.8 7 0.1 <0.6 6 0.2 <0.5 5 0.3 <0.4 4 0.5 <0.3 3 0.7 <0.2 2 0.9 <0.1 1 1

[0210] Table 7

[0211] CR CBR Perceived priority Third power control factor <0.8 <0.8 7 0.1 <0.6 <0.6 6 0.2 <0.5 <0.5 5 0.3 <0.4 <0.4 4 0.5 <0.3 <0-3 3 0.7 <0.2 <0.2 2 0.9 <0.1 <0.1 1 1

[0212] In a possible implementation manner, under the second mode, the fourth transmission power is determined according to the maximum transmission power of the terminal, the second path loss, and at least one of the following: the second desired reception power on a single RB, the second path loss compensation factor, the number of RBs occupied by the communication signal, and the second subcarrier configuration factor.

[0213] When both the first communication device and the second communication device are terminals, the second path loss may include the path loss of the sidelink and the path loss of the downlink, or in other words, include the path loss between the first communication device and the second communication device (i.e., between terminals) and the path loss between the first communication device and the RAN node. For example, the second path loss may include the PL in the above relationship (3). D and the PL in the above relationship (4). SL , the fourth transmission power may be determined based on the above relationship (2), relationship (3), and relationship (4). Alternatively, the fourth transmission power may be determined based on the above relationship (2), relationship (3), relationship (4), and relationship (5).

[0214] The second desired reception power on a single RB may include the P in the above relationship (3). O，D and the P in the above relationship (4). O，SL . The second path loss compensation factor may include the α in the above relationship (3). D and the α in the above relationship (4). SL . The number of RBs occupied by the communication signal may be the The second subcarrier configuration factor may be the μ in the above relationship (3) and relationship (4). For reference to the foregoing related description, it will not be elaborated here.

[0215] In a possible implementation manner, for the first communication device to determine the first transmission power and the second transmission power, it may include: the first communication device determines the third transmission power and the fourth transmission power. When the sum of the third transmission power and the fourth transmission power is greater than the maximum transmission power of the terminal, the first communication device adjusts the first power control factor or the second power control factor so that the sum of the first transmission power and the second transmission power is less than or equal to the maximum transmission power of the terminal. That is, adjust β sense or β comm so that:

[0216] β sense ·P sense (i) + β comm ·P comm (i) ≤ P CMAX (12).

[0217] where, β sense represents the first power control factor, β comm represents the second power control factor, Psense (i) represents the third transmission power, P comm (i) represents the fourth transmission power, P CMAX represents the maximum transmission power of the terminal. For the convenience of description, hereinafter, the first transmission power is denoted as P sense_T (i), that is, β sense ·P sense (i) = P sense_T (i); the second transmission power is denoted as P comm_T (i), that is, β comm ·P comm (i) = P comm_T (i).

[0218] As a possible implementation, when the sensing priority is higher than the communication priority, the first power control factor may not exist, or rather, the value of the first power control factor can be 1. At this time, the above relationship (12) can be transformed into: P sense (i) + β comm ·P comm (i) ≤ P cMAX . When the communication priority is higher than the sensing priority, the second power control factor may not exist, or rather, the value of the second power control factor can be 1. At this time, the above relationship (12) can be transformed into: β sense ·P sense (i) + P comm (i) ≤ P CMAX .

[0219] As a possible implementation, β sense ∈ {0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1}, and / or, β comm ∈ {0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1}.

[0220] As the first possible implementation, when the communication priority is higher than the sensing priority, the first communication device adjusts the first power control factor. In the embodiments of the present application, the communication priority can also be referred to as the data priority, and the two can be replaced with each other.

[0221] As an example, when the communication priority is higher than the sensing priority, the second power control factor β comm = 1, and the second transmission power is equal to the fourth transmission power, that is, P comm_T (i) = P comm (i). At this time, the relationship (12) is transformed into: β sense ·P sense (i) + P comm (i) ≤ P CMAX. The first transmission power is the maximum transmission power of the terminal minus the second transmission power, i.e., P sense_T (i) = P CMAX -β comm ·P comm (i). The first power control adjustment factor is the ratio of the first transmission power to the third transmission power, i.e., β sense = P sense_T (i) / P sense (i).

[0222] As another example, in the case where the communication priority is higher than the sensing priority, the second power control factor β comm < 1. At this time, the first communication device can select the first power control factor. If the first power control factor selected this time makes β sense ·P sense (i)+β comm ·P comm (i)>P CMAX , then the first communication device reduces the value of the first power control factor until β sense ·P sense (i)+β comm ·P comm (i) ≤ P CMAX .

[0223] Optionally, if the protocol predefines or the RAN node preconfigures the minimum transmission power P sense_th of the sensing signal, in the case where the communication priority is higher than the sensing priority, if the first transmission power determined by the above adjustment method is less than the minimum transmission power of the sensing signal, i.e., P sense_T (i) < P sense_th , then the first transmission power is adjusted to the minimum transmission power P sense_th of the sensing signal. At this time, the second transmission power is adjusted accordingly to β comm ·P comm (i)-(P sense_th -P sense_T (i)).

[0224] Optionally, in the case where the communication priority is higher than the sensing priority, if the difference between the fourth transmission power and the third transmission power is greater than or equal to the threshold P th_a , then the second transmission power is equal to the fourth transmission power, i.e., P comm_T (i) = P comm (i), and the second power control factor β comm = 1. At this time, the first transmission power P sense_T (i) = P CMAX -β comm ·P comm (i)-P th_a , where βcomm = 1. Then β sense = P sense_T (i) / P sense (i).

[0225] In addition, if the sum of the fourth transmission power and the threshold P th_a is greater than or equal to the maximum transmission power of the terminal, that is, P comm (i) + P th_a ≥ P CMAX , then P sense_T (i) = 0, that is, the sensing signal can be not sent.

[0226] As a second possible implementation, when the sensing priority is higher than the communication priority, the first communication device adjusts the second power control factor.

[0227] As an example, when the sensing priority is higher than the communication priority, the first power control factor β sense = 1, the first transmission power is equal to the third transmission power, that is, P sense_T = P sense (i). At this time, the above relationship (12) is transformed into: P sense (i) + β comm ·P comm (i) ≤ P CMAx The second transmission power is the maximum transmission power of the terminal minus the first transmission power, that is, P comm_T (i) = P CMAX - β sense ·P sense (i), and the second power control adjustment factor is the ratio of the second transmission power to the fourth transmission power, that is, β comm = P comm_T (i) / P comm (i).

[0228] As another example, when the sensing priority is higher than the communication priority, the first power control factor β sense < 1. At this time, the first communication device can select the second power control factor. If the selected second power control factor makes β sense ·P sense (i) + β comm ·P comm (i) > P CMAX , then the first communication device reduces the value of the second power control factor until β sense ·P sense (i) + β comm ·P comm (i) ≤ P CMAX .

[0229] Optionally, if the minimum transmission power P of the communication signal is predefined by the protocol or preconfigured by the RAN node comm_th , in the case where the sensing priority is higher than the communication priority, if the second transmission power determined by the above adjustment method is less than the minimum transmission power of the communication signal, that is, P comm_T (i) < P comm_th , then the second transmission power is adjusted to the minimum transmission power P of the communication signal comm_th . At this time, the first transmission power is correspondingly adjusted to β sense ·P sense (i) - (P comm_th - P comm_T (i)).

[0230] Optionally, in the case where the sensing priority is higher than the communication priority, if the difference between the third transmission power and the fourth transmission power is greater than or equal to the threshold P th_b , then the first transmission power is equal to the third transmission power, that is, P sense_T = P sense (i), and the first power control factor β sense = 1. At this time, the second transmission power P comm_T (i) = P CMAx - β sense ·P sense (i) - P th_b , where β sense = 1. Then β comm = P comm_T (i) / P comm (i).

[0231] In addition, if the sum of the third transmission power and the threshold P th_b is greater than or equal to the maximum transmission power of the terminal, that is, P sense (i) + P th_b ≥ P CMAX , then P comm_T (i) = 0, that is, the communication signal may not be transmitted.

[0232] In a possible implementation manner, the first communication device determines the first transmission power and the second transmission power, which may include: the first communication device determines the third transmission power and the fourth transmission power. In the case where the sum of the third transmission power and the fourth transmission power is less than or equal to the maximum transmission power of the terminal, both the first power control factor and the second power control factor may be 1, that is, the first transmission power is equal to the third transmission power, and the second transmission power is equal to the fourth transmission power.

[0233] Furthermore, if the sum of the third transmission power, the fourth transmission power, and the threshold P th_A is less than or equal to the maximum transmission power of the terminal, that is, P sense (i) + Pcomm (i) + P th_A ≤P CMAX , then the first transmission power is equal to the third transmission power, and the second transmission power is equal to the fourth transmission power. That is, P sense_T =P sense (i), P comm_T (i) = P comm (i).

[0234] Or, if P sense (i) + P comm (i) ≤ P CMAX , but P sense (i) + P comm (i) + P th_A > P CMAX , and the communication priority is higher than the sensing priority, then the second transmission power is equal to the fourth transmission power, and the first transmission power is P CMAX - P comm (i) - P th_A . At this time, it can also be considered that the second power control factor is equal to 1, and the first power control factor is equal to the ratio of the first transmission power to the third transmission power.

[0235] Or, if P sense (i) + P comm (i) ≤ P CMAX , but P sense (i) + P comm (i) + P th_A > P CMAx , and the sensing priority is higher than the communication priority, then the first transmission power is equal to the third transmission power, and the second transmission power is P CMAX - P sense (i) - P th_A . At this time, it can also be considered that the first power control factor is equal to 1, and the second power control factor is equal to the ratio of the second transmission power to the fourth transmission power.

[0236] In a possible implementation, when the sensing priority is higher than the communication priority, the difference between the first transmission power and the second transmission power is greater than or equal to the first threshold. When the communication priority is higher than the sensing priority, the difference between the second transmission power and the first transmission power is greater than or equal to the second threshold. Exemplarily, it can be adjusted by the above method for determining the first transmission power and the second transmission power so that the first transmission power and the second transmission power satisfy this relationship.

[0237] Wherein, the first threshold and the second threshold may be the same or different. The first threshold and the second threshold may be predefined by the protocol, or may be configured by the RAN node or the control node, and the present application does not make specific limitations thereon.

[0238] Based on this solution, it can be ensured that the difference between the transmission power of a high-priority high-signal and the transmission power of a low-priority signal is greater than or equal to a threshold value, thereby reducing the interference of the low-priority signal on the high-priority signal and ensuring the transmission performance of the high-priority signal.

[0239] In addition to Figure 7 the power control method shown, the present application also provides a power control method, as Figure 8 shown, the power control method includes the following steps:

[0240] S801. The first communication device determines a first transmission power and a second transmission power.

[0241] Wherein, the sum of the first transmission power and the second transmission power is less than or equal to the maximum transmission power of the terminal. The first transmission power can be understood as the transmission power of the sensing signal, and the second transmission power can be understood as the transmission power of the communication signal. It can be understood that the first communication device is the terminal. The maximum transmission power of the terminal is the maximum transmission power of the first communication device.

[0242] As a possible implementation, when the sensing priority is higher than the communication priority, the first transmission power is determined according to the maximum transmission power of the terminal and a third transmission power. The second transmission power is the difference between the maximum transmission power of the terminal and the first transmission power. Exemplarily, the first communication device can first determine the first transmission power according to the maximum transmission power of the terminal and the third transmission power, and then determine the difference between the maximum transmission power of the terminal and the first transmission power as the second transmission power.

[0243] Wherein, the third transmission power is determined according to a first path loss. Exemplarily, the first path loss can be the sensing path loss or the path loss of the sensing link. The specific determination method of the third transmission power will be described in subsequent embodiments and will not be elaborated here.

[0244] Or, the third transmission power is the desired transmission power of the sensing signal, or rather, the third transmission power is the desired transmission power of the sensing signal (at the sensing signal transmitting end or the sensing signal receiving end), or rather, the third transmission power is the transmission power requirement of the sensing signal. At this time, the third transmission power can be configured by a higher layer.

[0245] As another possible implementation, when the communication priority is higher than the sensing priority, the first transmission power is the difference between the maximum transmission power of the terminal and the second transmission power. The second transmission power is determined according to the maximum transmission power of the terminal and a second path loss, and the second path loss can be the communication path loss. Exemplarily, the first communication device can first determine the second transmission power according to the maximum transmission power of the terminal and the second path loss, and then determine the difference between the maximum transmission power of the terminal and the second transmission power as the first transmission power.

[0246] In a possible implementation, Figure 8 The implementation of the first transmission power, the second transmission power, and the third transmission power in the method shown is respectively similar to Figure 7 the implementation of the third transmission power, the fourth transmission power, and the fifth transmission power in the method shown, and the relevant descriptions of the third transmission power, the fourth transmission power, and the fifth transmission power in the above Figure 7 shown method can be referred to respectively.

[0247] S802. The first communication device transmits a sensing signal on the first time unit according to the first transmission power.

[0248] S803. The first communication device transmits a communication signal on the first time unit according to the second transmission power. Correspondingly, the second communication device receives the communication signal on the first time unit. That is, the first communication device also serves as the transmitter of the communication signal, and the second communication device is the receiver of the communication signal.

[0249] Among them, the implementation of steps S802 and S803 can refer to the relevant descriptions of steps S702 and S703 above respectively, and will not be elaborated here.

[0250] Based on this solution, the first communication device can determine the transmission power of the sensing signal and realize the transmission of the sensing signal. In addition, the first communication device preferentially determines the transmission power of the high-priority signal based on the priority, and uses the remaining power as the transmission power of the low-priority signal, so that the sum of the first transmission power and the second transmission power satisfies the maximum transmission power constraint of the terminal, and further realizes the simultaneous transmission of the sensing signal and the communication signal, meeting the requirements of simultaneous sensing and communication.

[0251] The overall process of the power control method provided in this application is described above. Next, the determination method of the first transmission power in the case where the sensing priority is higher than the communication priority will be described in detail. Exemplarily, the first transmission power can be determined in the following two ways:

[0252] Method A: The first transmission power is determined according to the maximum transmission power of the terminal and the third transmission power. The first transmission power satisfies the following relationship:

[0253] P sense (i) = min(P CMAX , P sense，PL (i)) (13)

[0254] Among them, P sense (i) represents the first transmission power, i represents the index of the first time unit, P CMAX represents the maximum transmission power of the terminal, P sense，PL (i) represents the third transmission power, and min() represents the minimum value operation.

[0255] In a possible implementation, when the first communication device is a terminal and the second communication device is a RAN node, or when the first communication device belongs to an uplink communication and sensing integrated system, the first communication device determines the first transmission power using this method A.

[0256] In a possible implementation, when the third transmission power is determined according to the first path loss, the third transmission power can be determined according to the first path loss and at least one of the following: the first desired received power on a single RB, the first path loss compensation factor, the number of RBs occupied by the sensing signal, the first subcarrier configuration factor, or the first closed-loop power control parameter.

[0257] Exemplarily, the third transmission power may satisfy the following relationship:

[0258]

[0259] Where P sense，PL (i) represents the third transmission power, i represents the index of the first time unit, P 0，sense represents the first desired received power on a single RB, μ1 represents the first subcarrier configuration factor, represents the number of RBs occupied by the sensing signal in time unit i (i.e., the first time unit), α sense represents the first path loss compensation factor, PL sense represents the first path loss or the estimated value of the first path loss, f sense represents the first closed-loop power control parameter.

[0260] Where, for the specific implementation of the third transmission power, reference can be made to the relevant description of the fifth transmission power in Method 1 shown above, which will not be elaborated here. Figure 7 shown in the above method, and will not be elaborated here.

[0261] In Method B, the first transmission power is determined according to the maximum transmission power of the terminal, the third transmission power, and the fourth transmission power. The first transmission power satisfies the following relationship:

[0262] P sense (i) = min(P CMAX , P sense，C , P sense，PL (i)) (15)

[0263] Where P sense (i) represents the first transmission power, i represents the index of the first time unit, P CMAX represents the maximum transmission power of the terminal, P sense，PL (i) represents the third transmission power, P sense，C represents the fourth transmission power, and min() represents the minimum operation.

[0264] In a possible implementation, when both the first communication device and the second communication device are terminals, or when the first communication device belongs to a sidelink / D2D communication and sensing integrated system, the first communication device determines the first transmission power using this Method B.

[0265] In a possible implementation, when the third transmission power is determined according to the first path loss, the third transmission power can be determined according to the first path loss and at least one of the following: the first desired reception power on a single RB, the first path loss compensation factor, the number of RBs occupied by the sensing signal, or the first subcarrier configuration factor. Exemplarily, the third transmission power can satisfy the following relationship:

[0266]

[0267] where P sense，PL (i) represents the third transmission power, i represents the index of the first time unit, P 0，sense represents the first desired reception power on a single RB, μ1 represents the first subcarrier configuration factor, represents the number of RBs occupied by the sensing signal in time unit i, α sense represents the first path loss compensation factor, PL sense represents the first path loss, f sense represents the first closed-loop power control parameter.

[0268] where the specific implementation of the third transmission power can refer to the relevant description of the fifth transmission power in Method 2 of the method shown above, and will not be elaborated here. Figure 7 shown above, and will not be elaborated here.

[0269] In a possible implementation, the fourth transmission power is determined according to at least one of CBR, CR, or sensing priority. The specific implementation of the fourth transmission power can refer to the relevant description of the sixth transmission power in Method 2 of the method shown above, and will not be elaborated here. Figure 7 shown above, and will not be elaborated here.

[0270] As a possible implementation, in this Method A or Method B, when the sensing priority is higher than the communication priority, the second transmission power satisfies the following relationship:

[0271] P comm (i) = P CMAX - P sense (i) (17)

[0272] where P comm (i) represents the second transmission power, P CMAX represents the maximum transmission power of the terminal, P sense (i) represents the first transmission power.

[0273] As another possible implementation, in this Mode A or Mode B, when the sensing priority is higher than the communication priority, the second transmission power can be 0, that is, it can be considered that no communication signal is transmitted.

[0274] When the communication priority is higher than the sensing priority, the second transmission power can be determined in the following two ways:

[0275] Mode a: The second transmission power is determined according to the maximum transmission power of the terminal, the second path loss, and at least one of the following: the second expected received power on a single RB, the second path loss compensation factor, the number of RBs occupied by the communication signal, the second subcarrier configuration factor, the second closed-loop power control parameter, or the power offset value. This power offset value is determined by the MCS of the communication signal.

[0276] Among them, for the specific implementation of the second path loss and the second transmission power, reference can be made respectively to the relevant descriptions of the second path loss and the fourth transmission power in Mode 1 of the method shown above. Details are not elaborated here. Figure 7 For the relevant descriptions of the second path loss and the fourth transmission power in Mode 2 of the method shown above. Details are not elaborated here.

[0277] Mode b: The second transmission power is determined according to the maximum transmission power of the terminal, the second path loss, and at least one of the following: the second expected received power on a single RB, the second path loss compensation factor, the number of RBs occupied by the communication signal, the second subcarrier configuration factor.

[0278] Among them, for the specific implementation of the second path loss and the second transmission power, reference can be made respectively to the relevant descriptions of the second path loss and the fourth transmission power in Mode 2 of the method shown above. Details are not elaborated here. Figure 7 For the relevant descriptions of the second path loss and the fourth transmission power in Mode 2 of the method shown above. Details are not elaborated here.

[0279] As a possible implementation, in this Mode a or Mode b, when the communication priority is higher than the sensing priority, the first transmission power satisfies the following relationship:

[0280] P sense (i) = P CMAX - P comm (i) (18)

[0281] Among them, P sense (i) represents the first transmission power, P CMAX represents the maximum transmission power of the terminal, and P comm (i) represents the second transmission power.

[0282] As another possible implementation, in this Mode A or Mode B, when the communication priority is higher than the sensing priority, the first transmission power can be 0, that is, it can be considered that no sensing signal is transmitted.

[0283] In a possible implementation, when the sensing priority is higher than the communication priority, the difference between the first transmission power and the second transmission power is greater than or equal to the first threshold. When the communication priority is higher than the sensing priority, the difference between the second transmission power and the first transmission power is greater than or equal to the second threshold. Herein, the first threshold and the second threshold may be the same or different. The first threshold and the second threshold may be predefined by the protocol, or may be configured by the RAN node or the control node. This application does not make specific limitations in this regard.

[0284] Exemplarily, after determining the first transmission power and the second transmission power through the above method, the first transmission power or the second transmission power may be adjusted, for example, multiplied by a power control factor, so that the first transmission power and the second transmission power respectively used when finally transmitting the sensing signal and the communication signal satisfy the relationship that the above difference is greater than or equal to the threshold.

[0285] Based on this solution, it can be ensured that the difference between the transmission power of the high-priority high signal and the transmission power of the low-priority signal is greater than or equal to the threshold, thereby reducing the interference of the low-priority signal on the high-priority signal and ensuring the transmission performance of the high-priority signal.

[0286] The above describes the method provided by this application. In addition, this application also provides a communication device for implementing the functions described in the above method embodiments.

[0287] It can be understood that, in order to implement the above functions, the communication device includes corresponding hardware structures and / or software modules for executing each function. Those skilled in the art should easily realize that, combining the units and algorithm steps of each example described in the embodiments disclosed herein, this application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed in the way of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of this application.

[0288] The embodiments of this application can divide the communication device into function modules according to the above method embodiments. For example, each function module can be divided corresponding to each function, or two or more functions can be integrated into one processing module. The above integrated module can be implemented in the form of hardware or in the form of a software function module. It should be noted that the division of modules in the embodiments of this application is illustrative, and is only a logical function division. There may be other division methods in actual implementation.

[0289] Communication device Figure 9The structural schematic diagram of a communication device 90 is shown. The communication device 90 includes a processing module 901 and a transceiver module 902. The communication device 90 can be used to implement the functions of the above-mentioned first communication device or second communication device.

[0290] In some embodiments, the communication device 90 may further include a storage module ( Figure 9 not shown in the figure) for storing program instructions and data.

[0291] In some embodiments, the transceiver module 902, which may also be referred to as a transceiver unit, is used to implement the sending and / or receiving functions. The transceiver module 902 may be composed of a transceiver circuit, a transceiver, a transceiver, or a communication interface.

[0292] In some embodiments, the transceiver module 902 may include a receiving module and a sending module, which are respectively used to execute the receiving and sending steps performed by the first communication device or the second communication device in the above method embodiments, and / or other processes for supporting the technologies described herein; the processing module 901 may be used to execute the processing steps performed by the first communication device or the second communication device in the above method embodiments, and / or other processes for supporting the technologies described herein.

[0293] When the communication device 90 is used to implement the functions of the first communication device, in a possible implementation manner:

[0294] The processing module 901 is used to determine a first transmission power and a second transmission power. The transceiver module 902 is used to send a sensing signal at a first time unit according to the first transmission power; the transceiver module 902 is further used to send a communication signal at the first time unit according to the second transmission power. Among them, the sum of the first transmission power and the second transmission power is less than or equal to the maximum transmission power of the terminal. The first transmission power is the product of a first power control factor and a third transmission power, and the second transmission power is the product of a second power control factor and a fourth transmission power. The third transmission power is determined according to the maximum transmission power of the terminal and a fifth transmission power, and the fifth transmission power is determined according to a first path loss, or the fifth transmission power is the desired transmission power of the sensing signal. The fourth transmission power is determined according to the maximum transmission power of the terminal and a second path loss.

[0295] Optionally, when the sum of the third transmission power and the fourth transmission power is greater than the maximum transmission power of the terminal and the communication priority is higher than the sensing priority, the processing module 901 is configured to determine the first transmission power, including: the processing module 901 is configured to adjust the first power control factor so that the sum of the first transmission power and the second transmission power is less than or equal to the maximum transmission power of the terminal. Alternatively, when the sum of the third transmission power and the fourth transmission power is greater than the maximum transmission power of the terminal and the communication priority is lower than the sensing priority, the processing module 901 is configured to determine the second transmission power, including: the processing module 901 is configured to adjust the second power control factor so that the sum of the first transmission power and the second transmission power is less than or equal to the maximum transmission power of the terminal.

[0296] When the communication device 90 is used to implement the functions of the first communication device, in another possible implementation:

[0297] The processing module 901 is configured to determine the first transmission power and the second transmission power. The transceiver module 902 is configured to transmit a sensing signal in a first time unit according to the first transmission power; the transceiver module 902 is further configured to transmit a communication signal in the first time unit according to the second transmission power. Wherein, the sum of the first transmission power and the second transmission power is less than or equal to the maximum transmission power of the terminal. When the sensing priority is higher than the communication priority, the first transmission power is determined according to the maximum transmission power of the terminal and the third transmission power, the third transmission power is determined according to the first path loss, or the third transmission power is the desired transmission power of the sensing signal, and the second transmission power is the difference between the maximum transmission power of the terminal and the first transmission power. Alternatively, when the communication priority is higher than the sensing priority, the first transmission power is the difference between the maximum transmission power of the terminal and the second transmission power, and the second transmission power is determined according to the maximum transmission power of the terminal and the second path loss.

[0298] All the relevant contents of the steps involved in the above method embodiments can be cited in the function descriptions of the corresponding functional modules, and will not be elaborated here.

[0299] In the present application, the communication device 90 may be presented in a form of integrating and dividing each functional module. Here, a "module" may refer to a specific application-specific integrated circuit (ASIC), a circuit, a processor and a memory that execute one or more software or firmware programs, an integrated logic circuit, and / or other devices that can provide the above functions.

[0300] In some embodiments, when Figure 9When the communication device 90 in [the above context] is a chip or a chip system, the functions / implementation processes of the transceiver module 902 can be implemented through the input / output interface (or communication interface) of the chip or chip system, and the functions / implementation processes of the processing module 901 can be implemented through the processor (or processing circuit) of the chip or chip system.

[0301] Since the communication device 90 provided in this embodiment can execute the above method, the technical effects it can obtain can refer to the above method embodiments and will not be elaborated here.

[0302] As a possible product form, the first communication device or the second communication device described in the embodiments of the present application can be implemented using the following: one or more field programmable gate arrays (FPGAs), programmable logic devices (PLDs), controllers, state machines, gate logic, discrete hardware components, any other suitable circuits, or any combination of circuits capable of performing the various functions described throughout the present application.

[0303] As another possible product form, the first communication device or the second communication device described in the embodiments of the present application can be implemented by a general bus architecture. For ease of explanation, refer to Figure 10 , Figure 10 is a schematic structural diagram of the communication device 1000 provided in the embodiments of the present application. The communication device 1000 includes a processor 1001 and a transceiver 1002. The communication device 1000 can be the first communication device, or a chip or chip system therein; or, the communication device 1000 can be the second communication device, or a chip or module therein. Figure 10 Only the main components of the communication device 1000 are shown. In addition to the processor 1001 and the transceiver 1002, the communication device may further include a memory 1003 and an input / output device (not shown in the figure).

[0304] Optionally, the processor 1001 is mainly used to process communication protocols and communication data, control the entire communication device, execute software programs, and process the data of the software programs, so as to implement the methods provided in the above method embodiments. The memory 1003 is mainly used to store software programs and data. The transceiver 1002 may include a radio frequency circuit and an antenna. The radio frequency circuit is mainly used for the conversion between baseband signals and radio frequency signals and the processing of radio frequency signals. The antenna is mainly used to receive and transmit radio frequency signals in the form of electromagnetic waves. The input / output device, such as a touch screen, a display screen, a keyboard, etc., is mainly used to receive data input by the user and output data to the user.

[0305] Optionally, the processor 1001, the transceiver 1002, and the memory 1003 may be connected via a communication bus.

[0306] After the communication device is powered on, the processor 1001 may read the software program in the memory 1003, interpret and execute the instructions of the software program, and process the data of the software program. When data needs to be wirelessly transmitted, after the processor 1001 performs baseband processing on the data to be transmitted, it outputs a baseband signal to the radio frequency circuit. The radio frequency circuit performs radio frequency processing on the baseband signal and then transmits 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 circuit 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 1001. The processor 1001 converts the baseband signal into data and processes the data.

[0307] In another implementation, the radio frequency circuit and the antenna may be provided independently of the processor performing baseband processing. For example, in a distributed scenario, the radio frequency circuit and the antenna may be independent of the communication device and arranged in a remote form.

[0308] In some embodiments, in terms of hardware implementation, those skilled in the art can conceive that the above communication device 90 may adopt Figure 10 the form of the communication device 1000 shown.

[0309] As an example, Figure 9 the function / implementation process of the processing module 901 in Figure 10 can be implemented by the processor 1001 in the communication device 1000 shown calling the computer execution instructions stored in the memory 1003. Figure 9 the function / implementation process of the transceiver module 902 in Figure 10 can be implemented by the transceiver 1002 in the communication device 1000 shown.

[0310] As another possible product form, the first communication device or the second communication device in the present application may adopt Figure 11 the composition structure shown, or include Figure 11 the components shown. Figure 11 FIG. 31 is a schematic diagram of the composition of a communication device 1100 provided by the present application. The communication device 1100 may be a chip or a system-on-chip in the first communication device or the second communication device; or, it may be a module or a chip or a system-on-chip in the second communication device or the second communication device.

[0311] As shown in Figure 11 the communication device 1100 includes at least one processor 1101, and at least one communication interface ( Figure 11is merely exemplary and is described by taking a communication interface 1104 and a processor 1101 as examples. Optionally, the communication device 1100 may further include a communication bus 1102 and a memory 1103.

[0312] The processor 1101 may be a general - purpose central processing unit (CPU), a general - purpose processor, a network processor (NP), a digital signal processor (DSP), a microprocessor, a microcontroller, a PLD, or any combination thereof. The processor 1101 may also be other devices with processing functions, such as circuits, devices, or software modules, without limitation.

[0313] The communication bus 1102 is used to connect different components in the communication device 1100 so that different components can communicate. The communication bus 1102 may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus, etc. This bus can be divided into an address bus, a data bus, a control bus, etc. For the sake of representation, Figure 11 only a thick line is used to represent it in the figure, but it does not mean that there is only one bus or one type of bus.

[0314] The communication interface 1104 is used to communicate with other devices or communication networks. Exemplarily, the communication interface 1104 may be a module, a circuit, a transceiver, or any device capable of realizing communication. Optionally, the communication interface 1104 may also be an input - output interface located within the processor 1101 to realize the signal input and signal output of the processor.

[0315] The memory 1103 may be a device with storage functions, used to store instructions and / or data. Among them, the instructions may be computer programs.

[0316] Exemplarily, the memory 1103 can be a read-only memory (ROM) or other types of static storage devices that can store static information and / or instructions. It can also be a random access memory (RAM) or other types of dynamic storage devices that can store information and / or instructions. Additionally, it can be an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM), or other optical disc storage, optical disc storage (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media, or other magnetic storage devices, without limitation.

[0317] It should be noted that the memory 1103 can exist independently of the processor 1101 or be integrated with the processor 1101. The memory 1103 can be located inside the communication device 1100 or outside the communication device 1100, without limitation. The processor 1101 can be used to execute the instructions stored in the memory 1103 to implement the methods provided in the following embodiments of the present application.

[0318] As an alternative implementation, the communication device 1100 can further include an output device 1105 and an input device 1106. The output device 1105 communicates with the processor 1101 and can display information in various ways. For example, the output device 1105 can be a liquid crystal display (LCD), a light emitting diode (LED) display device, a cathode ray tube (CRT) display device, or a projector, etc. The input device 1106 communicates with the processor 1101 and can receive user input in various ways. For example, the input device 1106 can be a mouse, a keyboard, a touch screen device, or a sensing device, etc.

[0319] In some embodiments, in terms of hardware implementation, those skilled in the art can envision that the Figure 9 shown communication device 90 can adopt the Figure 11 form of the communication device 1100 shown.

[0320] As an example, Figure 9 the function / implementation process of the processing module 901 in Figure 11 can be implemented by the processor 1101 in the communication device 1100 shown calling the computer-executable instructions stored in the memory 1103.Figure 9 The function / implementation process of the transceiver module 902 in Figure 11 can be implemented by the communication interface 1104 in the communication device 1100 shown in

[0321] It should be noted that Figure 11 the structure shown does not constitute a specific limitation on the first communication device or the second communication device. For example, in some other embodiments of the present application, the first communication device or the second communication device may include more or fewer components than shown in the figure, or combine certain components, or split certain components, or have different component arrangements. The components shown in the figure can be implemented in hardware, software, or a combination of software and hardware.

[0322] In some embodiments, the embodiments of the present application further provide a communication device, which includes a processor for implementing the method in any of the above method embodiments.

[0323] As a possible implementation, the communication device further includes a memory. The memory is used to store necessary computer programs and data. The computer program may include instructions, and the processor may call the instructions stored in the memory in the computer program to instruct the communication device to execute the method in any of the above method embodiments. Of course, the memory may not be in the communication device.

[0324] As another possible implementation, the communication device further includes an interface circuit, which is a code / data read / write interface circuit. The interface circuit is used to receive computer execution instructions (the computer execution instructions are stored in the memory, and may be directly read from the memory, or may pass through other devices) and transmit them to the processor.

[0325] As yet another possible implementation, the communication device further includes a communication interface, which is used to communicate with modules outside the communication device.

[0326] It can be understood that the communication device may be a chip or a chip system. When the communication device is a chip system, it may be composed of chips, or may include chips and other discrete devices. The embodiments of the present application do not make specific limitations on this.

[0327] The present application also provides a computer-readable storage medium, on which a computer program or instructions are stored. When the computer program or instructions are executed by a computer, they implement the functions of any of the above method embodiments.

[0328] The present application also provides a computer program product, which implements the functions of any of the above method embodiments when executed by a computer.

[0329] Those of ordinary skill in the art can understand that for the convenience and brevity of description, the specific working processes of the systems, devices, and units described above can refer to the corresponding processes in the foregoing method embodiments and will not be elaborated herein.

[0330] It can be understood that the systems, devices, and methods described in this application can also be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed couplings or direct couplings or communication connections between each other can be through some interfaces. The indirect couplings or communication connections of the devices or units can be in electrical, mechanical, or other forms.

[0331] The units described as separate components may or may not be physically separated, that is, they can be located in one place or distributed to multiple network units. The components displayed as units may or may not be physical units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0332] In addition, the functional units in each embodiment of this application can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit.

[0333] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using a software program, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program 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 devices. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (such as coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that the computer can access or a data storage device such as a server or data center that contains one or more integrated media. The available medium can be a magnetic medium (such as a floppy disk, hard disk, magnetic tape), an optical medium (such as a DVD), or a semiconductor medium (such as a solid state drive (SSD)), etc. In the embodiments of the present application, the computer can include the devices described above.

[0334] Although the present application has been described in connection with various embodiments, however, in the process of implementing the claimed present application, those skilled in the art can understand and implement other variations of the disclosed embodiments by viewing the accompanying drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "one" does not exclude a plurality. A single processor or other unit can implement several functions recited in the claims. Certain measures are recited in mutually different dependent claims, but this does not mean that these measures cannot be combined to produce good results.

[0335] Although the present application has been described in connection with specific features and their embodiments, it is obvious that various modifications and combinations can be made without departing from the scope of the present application. Accordingly, the present specification and the drawings are merely exemplary illustrations of the present application defined by the appended claims and are considered to cover any and all modifications, variations, combinations, or equivalents within the scope of the present application. Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application is also intended to include these changes and modifications.

Claims

1. A power control method, characterized in that, The method includes: Determine a first transmission power and a second transmission power, where the sum of the first transmission power and the second transmission power is less than or equal to the maximum transmission power of the terminal; Transmit a sensing signal on a first time unit according to the first transmission power; Transmit a communication signal on the first time unit according to the second transmission power; Wherein, the first transmission power is the product of a first power control factor and a third transmission power, and the second transmission power is the product of a second power control factor and a fourth transmission power; the third transmission power is determined according to the maximum transmission power of the terminal and a fifth transmission power, the fifth transmission power is determined according to a first path loss, or the fifth transmission power is the desired transmission power of the sensing signal; the fourth transmission power is determined according to the maximum transmission power of the terminal and a second path loss.

2. The method according to claim 1, wherein The third transmission power satisfies the following relationship: P sense (i) = min(P CMAX , P sense，PL (i)) Among them, P sense (i) represents the third transmission power, i represents the index of the first time unit, P CMAX represents the maximum transmission power of the terminal, P sense，PL (i) represents the fifth transmission power, and min() represents the minimum value operation.

3. The method according to claim 1, wherein The third transmission power is determined according to the maximum transmission power of the terminal, the fifth transmission power, and a sixth transmission power; Wherein, the sixth transmission power is determined according to at least one of a channel busy ratio CBR, a channel occupancy rate CR, or a sensing priority.

4. The method according to claim 3, characterized in that, The third transmission power satisfies the following relationship: P sense (i) = min(P CMAX , P sense,C , P sense，PL (i)) where, P sense (i) represents the third transmission power, i represents the index of the first time unit, P CMAX represents the maximum transmission power of the terminal, P sense，PL (i) represents the fifth transmission power, P sense,C represents the sixth transmission power, and min() represents the minimum value operation.

5. The method according to any one of claims 1-4, characterized in that, The fifth transmission power is determined according to a first path loss and at least one of the following: A first desired received power on a single resource block RB, a first path loss compensation factor, the number of RBs occupied by the sensing signal, a first subcarrier configuration factor, or a first closed-loop power control parameter.

6. The method according to claim 5, characterized in that The fifth transmission power satisfies the following relationship: Or, where P sense，PL (i) represents the fifth transmission power, i represents the index of the first time unit, P 0，sense represents the first desired received power on the single RB, μ1 represents the first subcarrier configuration factor, represents the number of RBs occupied by the sensing signal in time unit i, α sense represents the first path loss compensation factor, PL sense represents the first path loss, f sense represents the first closed-loop power control parameter.

7. The method according to any one of claims 1-6, characterized in that, The fourth transmission power is determined according to the maximum transmission power of the terminal, the second path loss, and at least one of the following: A second desired received power on a single RB, a second path loss compensation factor, the number of RBs occupied by the communication signal, a second subcarrier configuration factor, a second closed-loop power control parameter, or a power offset value, and the power offset value is determined by a modulation and coding scheme MCS of the communication signal.

8. The method according to any one of claims 1-7, characterized in that, When the sum of the third transmission power and the fourth transmission power is greater than the maximum transmission power of the terminal and the communication priority is higher than the sensing priority, the determining the first transmission power includes: Adjust the first power control factor such that the sum of the first transmission power and the second transmission power is less than or equal to the maximum transmission power of the terminal; or, When the sum of the third transmission power and the fourth transmission power is greater than the maximum transmission power of the terminal and the communication priority is lower than the sensing priority, the determining the second transmission power includes: Adjust the second power control factor such that the sum of the first transmission power and the second transmission power is less than or equal to the maximum transmission power of the terminal.

9. The method according to any one of claims 1-8, characterized in that When the sensing priority is higher than the communication priority, the first transmission power minus the second transmission power is greater than or equal to a first threshold; or, When the communication priority is higher than the sensing priority, the second transmission power minus the first transmission power is greater than or equal to a second threshold.

10. A power control method, characterized in that, [[ID= Determine a first transmission power and a second transmission power, where the sum of the first transmission power and the second transmission power is less than or equal to the maximum transmission power of the terminal; Transmit a sensing signal on a first time unit according to the first transmission power; Transmit a communication signal on the first time unit according to the second transmission power; Wherein, when the sensing priority is higher than the communication priority, the first transmission power is determined according to the maximum transmission power of the terminal and a third transmission power, the third transmission power is determined according to a first path loss, or the third transmission power is the desired transmission power of the sensing signal, and the second transmission power is the difference between the maximum transmission power of the terminal and the first transmission power; Or, when the communication priority is higher than the sensing priority, the first transmission power is the difference between the maximum transmission power of the terminal and the second transmission power, and the second transmission power is determined according to the maximum transmission power of the terminal and a second path loss.

11. The method according to claim 10, characterized in that, The first transmission power satisfies the following relationship: P sense (i) = min(P CMAX , P sense，PL (i)) Among them, P sense (i) represents the first transmission power, i represents the index of the first time unit, P CMAX represents the maximum transmission power of the terminal, P sense，PL (i) represents the third transmission power, and min() represents the minimum value operation.

12. The method according to claim 10, wherein The first transmission power is determined according to the maximum transmission power of the terminal, the third transmission power, and a fourth transmission power; Wherein, the fourth transmission power is determined according to at least one of a channel busy ratio CBR, a channel occupancy rate CR, or a sensing priority.

13. The method according to claim 12, wherein The first transmission power satisfies the following relationship: P sense (i) = min(P CMAX , P sense,C , P sense，PL (i)) Among them, P sense (i) represents the first transmission power, i represents the index of the first time unit, P CMAX represents the maximum transmission power of the terminal, P sense，PL (i) represents the third transmission power, P sense,C represents the fourth transmission power, and min() represents the minimum value operation.

14. The method according to any one of claims 10 - 13, characterized in that, The third transmission power is determined according to a first path loss and at least one of the following: The first desired reception power on a single resource block RB, a first path loss compensation factor, the number of RBs occupied by the sensing signal, a first subcarrier configuration factor, or a first closed-loop power control parameter.

15. The method according to claim 14, wherein The third transmission power satisfies the following relationship: Or, Among them, P sense，PL (i) represents the third transmission power, i represents the index of the first time unit, P 0，sense represents the first expected received power on the single RB, μ1 represents the first subcarrier configuration factor, represents the number of RBs occupied by the sensing signal in the time unit i, α sense represents the first path loss compensation factor, PL sense represents the first path loss, f sense represents the first closed-loop power control parameter.

16. The method according to any one of claims 10-15, characterized in that, The second transmission power is determined according to the maximum transmission power of the terminal, the second path loss, and at least one of the following: The second desired reception power on a single RB, a second path loss compensation factor, the number of RBs occupied by the communication signal, a second subcarrier configuration factor, a second closed-loop power control parameter, or a power offset value, and the power offset value is determined by the modulation and coding scheme MCS of the communication signal.

17. The method according to any one of claims 10 - 16, characterized in that, When the sensing priority is higher than the communication priority, the second transmission power satisfies the following relationship: P comm (i) = P CMAX -P sense (i) Or, When the communication priority is higher than the sensing priority, the first transmission power satisfies the following relationship: P sense (i) = P CMAX -P comm (i) Among them, P comm (i) represents the second transmission power, P CMAX represents the maximum transmission power of the terminal, P sense (i) represents the first transmission power.

18. The method according to any one of claims 10-17, wherein When the sensing priority is higher than the communication priority, the first transmission power minus the second transmission power is greater than or equal to a first threshold; or, When the communication priority is higher than the sensing priority, the second transmission power minus the first transmission power is greater than or equal to a second threshold.

19. A communication device, characterized in that, The communication device includes a module for executing the method according to any one of claims 1-9, or includes a module for executing the method according to any one of claims 10-18.

20. A communication device, characterized in that, The communication device includes a processor; the processor is configured to run a computer program or instructions, so that the communication device executes the method according to any one of claims 1-9, or so that the communication device executes the method according to any one of claims 10-18.

21. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions or programs. When the computer instructions or programs are run on a computer, the method according to any one of claims 1-9 is executed, or the method according to any one of claims 10-18 is executed.

22. A computer program product, characterized in that, The computer program product includes computer instructions; when some or all of the computer instructions are run on a computer, the method according to any one of claims 1-9 is executed, or the method according to any one of claims 10-18 is executed.

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