Method and apparatus of communication, storage medium, and chip system

Description

1 / 124 METHOD AND APPARATUS OF COMMUNICATION, STORAGE MEDIUM, AND CHIP SYSTEM CROSS-REFERENCE TO RELATED REQUESTS

[0001] This application claims priority over Chinese Patent Application No. 202310405814.2, filed with the China National Intellectual Property Administration on April 7, 2023, and entitled COMMUNICATION METHOD AND APPARATUS, STORAGE MEDIUM, AND CHIP SYSTEM, which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] This application relates to the field of communication technologies and, in particular, to a method and apparatus for communication, a storage medium and a chip system. BACKGROUND

[0003] With the rapid development of communication technologies, high-precision positioning is gradually becoming an important research project in a 5th Generation Mobile Networks (5G) or 5th Generation Wireless Systems (5G) project within the 3rd Generation Partnership Project (3GPP). New Radio (NR) positioning scenarios primarily include: enhanced Mobile Broadband (eMBB) in outdoor environments, eMBB in indoor environments, ultra-reliable and low-latency communications (URLLC), and massive machine-type communication (mTCC) / Internet of Things (IoT). NR positioning also requires characteristics such as high security, scalability, high availability, and guaranteed accuracy in high-speed applications.

[0004] Current positioning technologies mainly include uplink positioning, downlink positioning, and link positioning. Petition 870250107457, dated 11 / 24 / 2025, page 8 / 138 2 / 124 Uplink and Downlink. In an uplink positioning process, a network device (e.g., a base station) measures a reference signal sent by a terminal device. In a downlink positioning process, the terminal device measures a positioning reference signal sent by the network device. In both uplink and downlink positioning, both the terminal device and the network device need to measure a received signal. With the development of technologies such as vehicle-for-everything technology and autonomous driving technology, research based on side-link positioning in the future is gradually attracting the attention of academic and industrial circles.

[0005] Furthermore, controlling the transmission power of a signal in a wireless communication system is extremely important. For example, by controlling the power of an uplink signal, the terminal device can not only ensure the quality of the uplink data but also minimize interference within the system and to other users, thus extending the battery life of the terminal device. By controlling the power of the uplink signal, the base station can allow the uplink transmission to adapt to different wireless transmission environments, including path loss, shadowing, rapid fading, interference from other terminal devices within and between cells, and the like. However, in a scenario based on side-link placement, there is currently no power control mechanism. SUMMARY

[0006] This application provides a method and apparatus for communication, a storage medium and a chip system for providing a means of controlling the power of a reference signal. Petition 870250107457, dated 11 / 24 / 2025, page 9 / 138 3 / 124

[0007] A terminal device can select a resource in a detection manner. In this way, the terminal device can measure the reference signal received power (RSRP) of a physical sidelink control channel (PSCCH) whose transmission is performed on the resource. When the RSRP is less than a threshold, the terminal device considers that there is no strong interference when information transmission is performed on the resource and considers the resource to be an available resource.

[0008] However, the transmission of some reference signals (e.g., a side link positioning reference signal) can also be performed on the resource. However, currently, no power control solution for these reference signals is defined. If the terminal device performs resource selection based on the PSCCH RSRP, it is possible that the RSRP of a PSCCH on a selected resource is lower than the threshold, but the RSRP of a reference signal on the resource is high. If the terminal device performs information transmission on the resource, there will be strong interference.

[0009] This application provides a solution for determining the power value of a reference signal and the power value of a PSCCH. In the solution, the power value of the reference signal or the power value of the PSCCH is associated with a comb value of the reference signal, such that an average power value of the reference signal in an RE is associated with an average power value of the PSCCH in an RE. There is an association relationship between an RSRP of the PSCCH and an RSRP of the reference signal, and the RSRP of the PSCCH may reflect the RSRP of the reference signal to some extent. When another terminal device performs feature selection, such as an RSRP of the PSCCH measured by another terminal device, it may reflect the RSRP of the PSCCH and the RSRP of the reference signal. Petition 870250107457, dated 11 / 24 / 2025, p. 10 / 138 4 / 124 reference, the other terminal device can select a more suitable feature based on the PSCCH RSRP.

[0010] According to a first aspect, this application provides a first method of communication. The method can be implemented by a first terminal device. The first terminal device can be a terminal device or a module, a unit or a chip (system) in the terminal device. The method includes the following.

[0011] The first terminal device obtains a first parameter. The first parameter includes a comb value of a reference signal. The first terminal device determines a first power value and a second power value based on the first parameter and the first power value; or the first terminal device determines a second power value and a first power value based on the first parameter and the second power value. The first terminal device sends the reference signal based on the first power value and sends a PSCCH based on the second power value.

[0012] Since the first terminal device determines the second power value based on the comb value of the reference signal and the first power value, or the first terminal device determines the first power value based on the comb value of the reference signal and the second power value, an average power value of the reference signal in an RE is close to or equal to an average power value of the PSCCH in an RE, so that an RSRP of the PSCCH is close to or equal to an RSRP of the reference signal, and the RSRP of the PSCCH may reflect the RSRP of the reference signal to some extent. When another terminal device performs feature selection, since an RSRP of the PSCCH measured by the other terminal device may reflect the RSRP of the PSCCH and the RSRP of the reference signal, the other terminal device may select a more suitable feature. Petition 870250107457, dated 11 / 24 / 2025, p. 11 / 138 5 / 124 based on PSCCH RSRP.

[0013] In a possible implementation, the first parameter also includes at least one of a number of reference signal features or a number of PSCCH features.

[0014] In this way, the first power value or the second power value can be determined with reference to the comb value and the amount of resources of the reference signal or the amount of resources of the PSCCH. In this solution, the calculation process is simple, and the average power value of the reference signal in an RE is close to or equal to the average power value of the PSCCH in an RE, so that the other terminal device can select the most suitable resource based on the PSCCH's RSRP.

[0015] In one possible implementation, the first terminal device determines the first power value, and the second terminal device determines the second power value based on the first power value and a first value. The first value may include a quotient of a product of the PSCCH resource quantity and the reference signal comb value and the reference signal resource quantity. For example, the first value is the quotient of the product of the PSCCH resource quantity and the reference signal comb value and the reference signal resource quantity. Alternatively, the first value is a value associated with the quotient. For example, the first value is a result obtained by performing some mathematical operations on another parameter and the quotient.

[0016] The first value can alternatively be expressed in another formula. For example, the first value can alternatively include a difference between the sum of the PSCCH resource quantity and the reference signal comb value and the reference signal resource quantity. For example, the first value is the difference between the sum of the PSCCH resource quantity and the reference signal comb value and the reference signal resource quantity. Petition 870250107457, dated 11 / 24 / 2025, page 12 / 138 6 / 124 Alternatively, the first value is a value associated with the difference. For example, the first value is a result obtained by performing some mathematical operations on another parameter and on the difference.

[0017] A solution for determining the second power value based on the first value and the first power value is simple. In this way, the process of calculating the second power value can be simplified. Furthermore, a relationship between the first power value and the second power value is associated with the first value, so that the average power value of the reference signal in an RE is close to or equal to the average power value of the PSCCH in an RE, and the other terminal device can select the most suitable feature based on the RSRP of the PSCCH.

[0018] In one possible implementation, the second power value is a sum or a product of the first power value and the first value. Thus, the ratio or difference between the first power value and the second power value is equal to the first value, so that the average power value of the reference signal in an RE is equal to the average power value of the PSCCH in an RE, the RSRP of the PSCCH is close to or equal to the RSRP of the reference signal, and the other terminal device can select the most suitable resource based on the RSRP of the PSCCH.

[0019] In a possible implementation, the following describes, according to the following formula, an example of a way to calculate the power value of PSCCH: PpscchÍ.1) — PpRsí.1) + 10 / o,g10( )[^ml ·

[0020] In the formula, (0 represents a transmission power of the PSCCH on a transmission occasion i, represents a transmission power of the reference signal on transmission occasion i, Comb represents the comb value of the reference signal, represents a quantity of resources (e.g., a quantity of PSCCH RBs) of the PSCCH on transmission occasion i, Petition 870250107457, dated 11 / 24 / 2025, page 13 / 138 7 / 124 represents a quantity of resources (e.g., a quantity of RBs of the reference signal) of the reference signal at the time of transmission, i.e., log is a logarithm.

[0021] In this application, dBm in each formula represents a unit: decibel relative to one milliwatt (dBm).

[0022] In one possible implementation, when the first value is less than 1, the first terminal device determines the first power value and determines the second power value based on the first parameter and the first power value.

[0023] When the first value is less than 1, the first terminal device first determines the first power value and then the second power value based on the first parameter and the first power value. Therefore, the second power value can be reduced as much as possible, so that there is a high probability that the second power value will be less than the transmission power of the first terminal device (and / or less than the transmission power of the first terminal device based on a second CBR and a second transmission priority), and a more suitable power value can be determined. The second transmission priority is a PSCCH transmission priority, a reference signal transmission priority, or a transmission priority of a shared physical side link PSSCH channel.

[0024] In one possible implementation, when the second power value is greater than the first value, the first terminal device uses the second value as an updated second power value and sends the PSCCH based on the updated second power value; and the first terminal device updates the first power value based on the updated second power value and sends the reference signal based on the first value. Petition 870250107457, dated 11 / 24 / 2025, page 14 / 138 8 / 124 updated power value. The second value is a lower value in the transmission power of the first terminal device and in the transmission power of the first terminal device based on the second CBR and the second transmission priority. The second transmission priority is the PSCCH transmission priority, the reference signal transmission priority, or the PSSCH physical side link shared channel transmission priority.

[0025] In this way, an excessively high second power value is avoided. Furthermore, the relationship between the first power value and the second power value can be controlled, so that the average power value of the reference signal in an RE is equal to the average power value of the PSCCH in an RE, the RSRP of the PSCCH is close to or equal to the RSRP of the reference signal, and the other terminal device can select the most suitable resource based on the RSRP of the PSCCH.

[0026] In one possible implementation, the first terminal device determines the first updated power value based on the first parameter and the second updated power value.

[0027] In this way, the process of calculating the first power value can be simplified. Furthermore, the relationship between the first power value and the second power value is associated with the first value, so that the average power value of the reference signal in an RE is close to or equal to the average power value of the PSCCH in an RE, and the other terminal device can select the most suitable feature based on the RSRP of the PSCCH.

[0028] In one possible implementation, the first terminal device determines the first power value based on a third power value and / or a fourth power value. The third power value is determined based on the transmission power of the first terminal device, the amount of Petition 870250107457, dated 11 / 24 / 2025, page 15 / 138 9 / 124 reference signal resources, the amount of PSCCH resources, and the reference signal comb value. The fourth power value is determined based on the transmission power of the first terminal device based on the first CBR and the first transmission priority, the amount of reference signal resources, the amount of PSCCH resources, and the reference signal comb value, and the first transmission priority includes the reference signal transmission priority.

[0029] In this way, since the first power value is determined based on the third power value and / or the fourth power value, an excessively large first power value can be avoided, and an excessively large second power value, determined based on the first parameter and the first power value, can also be avoided. It can be learned that a suitable power value can be determined in this solution.

[0030] In one possible implementation, the third power value is a difference between, or a quotient of, the transmission power of the first terminal device and the first value. The first value includes the quotient of the product of the PSCCH resource quantity and the reference signal comb value and the reference signal resource quantity. Alternatively, the first value may include the difference between the sum of the PSCCH resource quantity and the reference signal comb value and the reference signal resource quantity. In one possible implementation, the fourth power value is a difference between, or a quotient of, the transmission power of the first terminal device based on the first CBR and the first transmission priority and the first value, and the first transmission priority includes the reference signal transmission priority.

[0031] How the first power value is determined with Petition 870250107457, dated 11 / 24 / 2025, page 16 / 138 10 / 124 based on the third power value and / or the fourth power value, when the second power value can be subsequently determined based on the first power value and the first parameter, an excessively large second power value can be avoided, so that a suitable second power value can be obtained.

[0032] In one possible implementation, the first power value is determined based on at least one of the following parameters: the transmission power of the first terminal device; the transmission power of the first terminal device based on the first CBR and the first transmission priority; a fifth power value; or a sixth power value. The first transmission priority includes the transmission priority of the reference signal.

[0033] The fifth power value is associated with at least one of the following: an initial power control value of the reference signal based on the downlink path loss of the first terminal device, the amount of resources of the reference signal, a downlink path loss adjustment coefficient, or a downlink path loss value. The sixth power value is associated with at least one of the following: an initial power control value of the reference signal based on a sidelink path loss of the first terminal device, the amount of resources of the reference signal, a sidelink path loss adjustment coefficient, or a sidelink path loss value.

[0034] In this way, the first power value can be determined with reference to a large number of factors, so that the first power value can be determined more accurately.

[0035] In one possible implementation, the first terminal device determines the second power value, and the first Petition 870250107457, dated 11 / 24 / 2025, page 17 / 138 11 / 124 The terminal device determines the first power value based on the second power value and a third value. The third value may include a quotient between the amount of resources of the reference signal and the comb value of the reference signal and the amount of resources of the PSCCH. For example, the third value is the quotient between the amount of resources of the reference signal and the comb value of the reference signal and the amount of resources of the PSCCH. Alternatively, the third value is a value associated with the quotient (the quotient is the quotient between the amount of resources of the reference signal and the comb value of the reference signal and the amount of resources of the PSCCH). For example, the third value is a result obtained by performing some mathematical operations on another parameter and the quotient.

[0036] The third value may alternatively include a difference between the reference signal's resource quantity and the reference signal's comb value and the PSCCH's resource quantity. For example, the third value is the difference between the reference signal's resource quantity and the reference signal's comb value and the PSCCH's resource quantity. Alternatively, the third value is a value associated with the difference (the difference is the difference between the reference signal's resource quantity and the reference signal's comb value and the PSCCH's resource quantity). For example, the third value is a result obtained by performing some mathematical operations on another parameter and the difference.

[0037] A solution to determine the first power value based on the third and second power values ​​is simple. In this way, the process of calculating the first power value can be simplified. Furthermore, a relationship between the first power value and the second power value is associated with the third value, such that the value Petition 870250107457, dated 11 / 24 / 2025, page 18 / 138 The average power of the reference signal in an RE (Reference Signal) should be close to or equal to the average power value of the PSCCH (Point-to-Point Signal) in an RE, and the other terminal device can select the most suitable feature based on the PSCCH's RSRP (Reference Signal Power Ratio).

[0038] In one possible implementation, the first power value is the sum or product of the second power value and the third value. Thus, the ratio or difference between the first power value and the second power value is equal to the third value, so that the average power value of the reference signal in an RE is equal to the average power value of the PSCCH in an RE, the RSRP of the PSCCH is close to or equal to the RSRP of the reference signal, and the other terminal device can select the most suitable resource based on the RSRP of the PSCCH.

[0039] In a possible implementation, the following describes, according to the following formula, an example of a way to calculate the power value of the reference signal: Mprs PPRS& = PmcchÍI) +loi°gioCmi,.MplbflddBm] cu ffLu*iyiRB xJ'J

[0040] In the formula, Ppxs (0 represents a transmission power of the reference signal on a transmission occasion i, CC represents a transmission power of the PSCCH in an SL BWP b of a carrier f on the transmission occasion i, Comb represents the comb value of the reference signal, represents a quantity of resources (e.g., a quantity of RBs of the PSCCH) of the PSCCH on the transmission occasion ie represents a quantity of resources (e.g., a quantity of RBs of the reference signal) of the reference signal on the transmission occasion i.

[0041] In one possible implementation, when the first value is greater than 1, the first terminal device determines the second power value and determines the first power value based on the first parameter and the second power value.

[0042] When the first value is greater than 1, the first Petition 870250107457, dated 11 / 24 / 2025, page 19 / 138 13 / 124 The first terminal device determines the second power value and then determines the first power value based on the first parameter and the second power value. Therefore, the first power value can be reduced to the maximum, so that there is a high probability that the first power value will be less than the transmission power of the first terminal device (and / or less than the transmission power of the first terminal device based on the first channel busy ratio (CBR) and the first transmission priority), and a more suitable power value can be determined.

[0043] In one possible implementation, when the first power value is greater than a fourth value, the first terminal device uses the fourth value as an updated first power value and sends the reference signal based on the updated first power value; and the first terminal device updates the second power value based on the updated first power value and sends the PSCCH based on an updated second power value. The fourth value is a lower value in the transmission power of the first terminal device and in the transmission power of the first terminal device based on the first CBR and the first transmission priority. The first transmission priority includes a transmission priority of the reference signal.

[0044] In this way, an excessively high initial power value is avoided. Furthermore, the relationship between the first power value and the second power value can be controlled, so that the average power value of the reference signal in an RE is equal to the average power value of the PSCCH in an RE, the RSRP of the PSCCH is close to or equal to the RSRP of the reference signal, and the other terminal device can select the most suitable resource based on the RSRP of the PSCCH.

[0045] In a possible implementation, the first device Petition 870250107457, dated 11 / 24 / 2025, page 20 / 138 The 14 / 124 terminal updates the second power value based on the first parameter and the first updated power value.

[0046] In this way, the process of calculating the second power value can be simplified. Furthermore, the relationship between the first power value and the second power value is associated with the first value, so that the average power value of the reference signal in an RE is close to or equal to the average power value of the PSCCH in an RE, and the other terminal device can select the most suitable feature based on the RSRP of the PSCCH.

[0047] In one possible implementation, the first terminal device determines the second power value based on a seventh power value and / or an eighth power value. The seventh power value is determined based on the transmission power of the first terminal device, the amount of resources of the reference signal, the amount of resources of the PSCCH, and the comb value of the reference signal. The eighth power value is determined based on the transmission power of the first terminal device based on the second CBR and the second transmission priority, the amount of resources of the reference signal, the amount of resources of the PSCCH, and the comb value of the reference signal.

[0048] In this way, since the second power value is determined based on the seventh power value and / or the eighth power value, an excessively large second power value can be avoided, and an excessively large first power value, determined based on the first parameter and the second power value, can also be avoided. It can be learned that a suitable power value can be determined in this solution.

[0049] In one possible implementation, the seventh power value is the difference or quotient between the transmission power of the first terminal device and the third value, and Petition 870250107457, dated 11 / 24 / 2025, page 21 / 138 15 / 124 The third value includes the quotient between the amount of resources of the reference signal and the comb value of the reference signal and the amount of resources of the PSCCH. The third value may alternatively include the difference between the amount of resources of the reference signal and the comb value of the reference signal and the amount of resources of the PSCCH. In a possible implementation, the eighth power value is the difference or quotient between the transmission power of the first terminal device based on the second CBR and the second transmission priority and the third value.

[0050] Since the second power value is determined based on the seventh power value and / or the eighth power value, when the first power value can be subsequently determined based on the second power value and the first parameter, an excessively large first power value can be avoided, so that a suitable first power value can be obtained.

[0051] In one possible implementation, the second power value is determined based on at least one of the following parameters: the transmission power of the first terminal device; the transmission power of the first terminal device based on the second CBR and the second transmission priority; a ninth power value; or a tenth power value. In one possible implementation, the ninth power value is associated with at least one initial power control value of the PSCCH based on the downlink path loss of the first terminal device, the amount of PSCCH resources, a downlink path loss adjustment coefficient, or a downlink path loss value. In one possible implementation, the tenth power value is associated with at least one initial power control value of the PSCCH based on a lateral link path loss of the first terminal device, in Petition 870250107457, dated 11 / 24 / 2025, page 22 / 138 16 / 124 quantity of PSCCH resources, in a side link path loss adjustment coefficient or in a side link path loss value. In this way, the second power value can be determined with reference to a large number of factors, so that the second power value can be determined more accurately.

[0052] According to a second aspect, this application provides a method of communication. The method can be implemented by a first terminal device. The first terminal device can be a terminal device or a module, a unit or a chip (system) in the terminal device. The method includes the following.

[0053] The first terminal device determines a first power value, where the first power value is associated with a comb value of a reference signal. The first terminal device sends the reference signal based on the first power value.

[0054] Since the first power value is associated with the reference signal comb value, an average reference signal power value in an RE is close to or equal to an average PSCCH power value in an RE, so that another terminal device can select a more suitable resource based on a PSCCH RSRP.

[0055] In one possible implementation, the first power value is determined based on an eleventh power value, the eleventh power value is associated with a downlink path loss, and the eleventh power value is determined based on the reference signal comb value.

[0056] Since the eleventh power value is associated with downlink path loss, and the eleventh power value is determined based on the comb value of the reference signal, the first power value determined based on the eleventh power value may be more Petition 870250107457, dated 11 / 24 / 2025, page 23 / 138 17 / 124 suitable, so that the average power value of the reference signal in an RE is close to the average power value of the PSCCH in an RE, and the other terminal device can select the most suitable feature based on the PSCCH's RSRP.

[0057] In one possible implementation, the eleventh power value is determined based on at least one of the following parameters: an initial reference signal power control value based on the downlink path loss of the first terminal device, a reference signal resource quantity, a downlink path loss adjustment coefficient, or a downlink path loss value.

[0058] In this way, the eleventh power value can be determined with reference to a large number of factors, so that the eleventh power value can be determined more accurately.

[0059] In one possible implementation, the first power value is determined based on a twelfth power value, the twelfth power value is associated with a side link path loss, and the twelfth power value is determined based on the comb value of the reference signal.

[0060] Since the twelfth power value is associated with side link path loss, and the twelfth power value is determined based on the reference signal comb value, the first power value determined based on the twelfth power value may be more suitable, so that the average power value of the reference signal in an RE is close to the average power value of the PSCCH in an RE, and the other terminal device can select the most suitable feature based on the PSCCH RSRP.

[0061] In a possible implementation, the twelfth value Petition 870250107457, dated 11 / 24 / 2025, page 24 / 138 The 18 / 124 power value is further determined based on at least one of the following parameters: an initial power control value of the reference signal based on the side link path loss of the first terminal device, a reference signal resource quantity, a side link path loss adjustment coefficient, or a side link path loss value. In this way, the twelfth power value can be determined with reference to a large number of factors, so that the twelfth power value can be determined more accurately.

[0062] In one possible implementation, the first power value is determined based on at least one of the following parameters: a transmission power of the first terminal device; or a transmission power of the first terminal device based on a first CBR and a first transmission priority. The first transmission priority includes a transmission priority of the reference signal. In this way, the first power value can be determined with reference to a large number of factors, so that the first power value can be determined more accurately.

[0063] According to a third aspect, this application provides a method of communication. The method can be implemented by a first terminal device. The first terminal device can be a terminal device or a module, a unit, or a chip (system) in the terminal device. The method includes: the first terminal device determines a second power value, wherein the second power value is associated with at least one of: the transmission power of the first terminal device, the downlink path loss of the first terminal device, or the sidelink path loss of the first terminal device. The first terminal device sends a PSCCH based on the second power value.

[0064] In this way, the first terminal device can Petition 870250107457, dated 11 / 24 / 2025, p. 25 / 138 19 / 124 separately determine a PSCCH power value. Furthermore, when the first terminal device does not send a PSSCH, in this solution, the PSCCH power value can be determined without relying on a PSSCH power control solution, to improve the solution's flexibility.

[0065] In one possible implementation, the second power value is determined based on a ninth power value. The ninth power value is associated with at least one of the following: an initial power control value of the PSCCH based on the downlink path loss of the first terminal device, a quantity of PSCCH resources, a downlink path loss adjustment coefficient, or the downlink path loss value.

[0066] In this way, the second power value can be determined based on the downlink path loss status, so that the second power value can be determined more accurately.

[0067] In one possible implementation, the second power value is determined based on a tenth power value. The tenth power value is associated with at least one of the following: an initial power control value of the PSCCH based on the side link path loss of the first terminal device, a PSCCH resource quantity, a side link path loss adjustment coefficient, or a side link path loss value.

[0068] In this way, the second power value can be determined based on the side link path loss status, so that the second power value can be determined more accurately.

[0069] In a possible implementation, the second power value is determined based on the following parameter: a transmission power of the first terminal device based on a second CBR and a second transmission priority, in Petition 870250107457, dated 11 / 24 / 2025, page 26 / 138 20 / 124 that the second transmission priority is a PSCCH transmission priority, a reference signal transmission priority, or a physical side link shared channel transmission priority (PSSCH).

[0070] In this way, the second power value can be determined with reference to a large number of factors, so that the second power value can be determined more accurately.

[0071] According to a fourth aspect, this application provides a communication device. The communication device may be the first prior terminal device, and the communication device may include a communication unit and a processing unit, to perform any of the method implementations in any of the first to third aspects. The communication unit is configured to perform sending and receiving related functions. Optionally, the communication unit includes a receiving unit and a sending unit. In a design, the communication device is a communication chip, the processing unit may be one or more processors or processor cores, and the communication unit may be an input / output circuit or a port of the communication chip.

[0072] In another design, the communication unit may be a transmitter and a receiver, or the communication unit may be a transmitting machine and a receiving machine.

[0073] Optionally, the communication device also includes modules that can be configured to perform any of the method implementations in any of the first to third aspects.

[0074] According to a fifth aspect, this application provides a communication device. The communication device may be the first prior terminal device, and the communication device may include a processor and memory. Petition 870250107457, dated 11 / 24 / 2025, p. 27 / 138 21 / 124 Optionally, the communication device also includes a transceiver. The memory is configured to store a computer program or instructions. The processor is configured to invoke the computer program or instructions from memory and execute the computer program or instructions. When the processor executes the computer program or instructions in memory, the communication device is enabled to perform any of the implementations of the method in any of the first to third aspects.

[0075] Optionally, there is one or more processors and one or more memory modules.

[0076] Optionally, the memory can be integrated into the processor, or the memory and the processor can be arranged separately.

[0077] Optionally, the transceiver may include a transmitting machine (transmitter) and a receiving machine (receiver).

[0078] According to a sixth aspect, this application provides a communication device. The communication device may be the first prior terminal device, and the communication device may include a processor. The processor is coupled to a memory and may be configured to perform the method in any of the first to third aspects and the possible implementations of the first to third aspects. Optionally, the communication device also includes the memory. Optionally, the communication device also includes a communication interface, and the processor is coupled to the communication interface.

[0079] In one implementation, when the communication device is a wireless communication device, the communication interface can be a transceiver or an input / output interface. Optionally, the transceiver can be a transceiver circuit. Optionally, the input / output interface can be an input / output circuit. Petition 870250107457, dated 11 / 24 / 2025, page 28 / 138 22 / 124

[0080] In another implementation, when the communication device is a chip or a chip system, the communication interface may be an input / output interface, an interface circuit, an output circuit, an input circuit, a pin, a related circuit, or similar on the chip or chip system. The processor may alternatively be incorporated as a processing circuit or a logic circuit.

[0081] According to a seventh aspect, this application provides a system. The system includes the first terminal device mentioned above.

[0082] In one possible implementation, the system may also include a network device. The network device may configure a parameter for the first terminal device, for example, it may configure a parameter that needs to be used in a process of calculating a first power value or a second power value. In another possible implementation, the system may also include a terminal device configured to receive a PSCCH and / or a reference signal from the first terminal device.

[0083] According to an eighth aspect, this application provides a computer program product. The computer program product includes a computer program (which may also be called code or instructions). When the computer program is run, a computer is enabled to perform the method in any of the possible implementations of the first aspect, or a computer is enabled to perform the method in any of the implementations from the first aspect to the third aspect.

[0084] According to a ninth aspect, this application provides a computer-readable storage medium. The computer-readable medium stores a computer program (which may also be called code or instructions). When the program Petition 870250107457, dated 11 / 24 / 2025, page 29 / 138 23 / 124 computer is run on a computer, the computer is enabled to perform the method in any of the possible implementations of the first aspect, or the computer is enabled to perform the method in any of the implementations from the first aspect to the third aspect.

[0085] According to a tenth aspect, this application provides a chip system. The chip system may include a processor. The processor is coupled to memory and may be configured to perform the method in any of the first to third aspects and possible implementations of the first to third aspects. Optionally, the chip system also includes memory. The memory is configured to store a computer program (which may also be called code or instructions). The processor is configured to invoke the computer program from memory and run the computer program, to enable a device on which the chip system is installed to perform the method in any of the first to third aspects and possible implementations of the first to third aspects.

[0086] According to an eleventh aspect, this application provides a communication device. The communication device may be the first prior terminal device, and the communication device may include an interface circuit and a processing circuit. The interface circuit may include an input circuit and an output circuit. The processing circuit is configured to receive a signal through the input circuit and transmit a signal through the output circuit, to enable the method in either of the first and third aspects and the possible implementations of the first and third aspects to be implemented.

[0087] In a specific implementation process, the communication device may be a chip, the input circuit may be an input pin, the output circuit may be an output pin. Petition 870250107457, dated 11 / 24 / 2025, p. 30 / 138 24 / 124 and the processing circuit can be a transistor, a gate circuit, a trigger, several logic circuits or similar. An input signal received by the input circuit can be received and entered by, for example, but not limited to, a receiver; a signal emitted by the output circuit can be sent to, for example, but not limited to, a transmitter and transmitted by the transmitter; and the input circuit and the output circuit can be the same circuit, where the circuit is used as an input circuit and an output circuit at different times. Specific implementations of a processor and various circuits are not limited in this request.

[0088] In one implementation, when the communication device is a wireless communication device, the wireless communication device can be a terminal, such as a smartphone, or a radio access network device, such as a base station. The interface circuit can be a radio frequency processing chip in the wireless communication device, and the processing circuit can be a baseband processing chip in the wireless communication device.

[0089] In another implementation, the communication device may be part of devices within the wireless communication device, for example, an integrated circuit product, such as a system-on-a-chip or a communication chip. The interface circuit may be an input / output interface, an interface circuit, an output circuit, an input circuit, a pin, a related circuit, or similar on the chip or in a system-on-a-chip. The processing circuit may be a logic circuit on the chip. BRIEF DESCRIPTION OF THE DRAWINGS

[0090] Figure 1 is a diagram of several possible system architectures to which the modalities of this request are applicable; Figure 2 is a diagram of a possible network architecture to which one modality of this request is applicable; Petition 870250107457, dated 11 / 24 / 2025, p. 31 / 138 25 / 124 Figure 3A is a diagram of sending a reference signal in a comb manner according to one embodiment of this application; Figure 3B is another diagram of sending a reference signal in a comb-like manner, according to one embodiment of this application; Figure 4A is a diagram of one way to send a PSCCH and a reference signal according to one embodiment of this request; Figure 4B is a diagram of another way to send a PSCCH and a reference signal according to one embodiment of this request; Figure 5 is a possible schematic flowchart of a communication method according to one modality of this request; Figure 6 is a possible schematic flowchart of another communication method according to one modality of this request; Figure 7 is a possible schematic flowchart of another communication method according to one modality of this request; Figure 8 is a possible schematic flowchart of another communication method according to one modality of this request; Figure 9 is a diagram of the structure of a possible communication device according to one embodiment of this application; Figure 10 is a diagram of the structure of a possible communication device according to an embodiment of this application; and Figure 11 is a diagram of the structure of another possible communication device according to an embodiment of this application. DESCRIPTION OF THE MODALITIES

[0091] The technical solutions provided in the embodiments of this application are primarily applicable to a wireless communication system. The wireless communication system may conform to a 3rd generation partnership project (3GPP) wireless communication standard. For example, the solutions provided in the embodiments of this Petition 870250107457, dated 11 / 24 / 2025, page 32 / 138 Application 26 / 124 may be applied to a 4th generation (4G) communication system, for example, a long-term evolution (LTE) communication system; may be applied to a 5th generation (5G) communication system, for example, a 5G new radio (NR) communication system; or may be applied to various future communication systems, for example, a 6th generation (6G) communication system. Alternatively, the technical solutions provided in embodiments of this application may conform to another wireless communication standard, for example, an Institute of Electrical and Electronics Engineers (IEEE) 802 series wireless communication standard (e.g., 802.11, 802.15, or 802.20).

[0092] The method provided in the embodiments of this application can be additionally applied to a Bluetooth system, a wireless fidelity (Wi-Fi) system, a long-range radio (LoRa) system, or a vehicle-to-everything (V2X) system. The method provided in the embodiments of this application can be additionally applied to a satellite communication system, and the satellite communication system can be integrated with the above communication system.

[0093] Figure 1 is an example of a diagram of several possible system architectures to which the modalities of this application are applicable. In Figure 1, two terminal devices and one network device are used as an example for description. The communication system may also include other terminal devices and network devices.

[0094] (a) in Figure 1 shows an architecture within the network device cover. A PC5 connection is established between the terminal devices, and each terminal device establishes a connection with the network device (e.g., Petition 870250107457, dated 11 / 24 / 2025, page 33 / 138 27 / 124 a base station). It should be understood that terminal devices may be connected to the same base station or to different base stations. In (a) in Figure 1, an example where terminal devices are connected to the same base station is used for illustration. In embodiments of this application, a connection may be established between the terminal device and the base station by means of a Uu interface.

[0095] (b) Figure 1 shows an architecture within a portion of the network device coverage. A PC5 connection is established between the terminal devices; a portion of the terminal devices does not connect to the network device (e.g., a base station) and the remaining portion of the terminal devices connects to the network device (e.g., the base station).

[0096] (c) Figure 1 shows an architecture outside the network device coverage. A PC5 connection is established between the terminal devices, and no terminal device establishes a connection with the network device.

[0097] Figure 2 is an example of a diagram of a possible network architecture to which an embodiment of this application is applicable, using a 5G network architecture as an example. As shown in Figure 2, the possible network architecture to which this application is applicable may include three parts: end devices (e.g., UE 1 and UE 2 shown in Figure 2), an access network device (e.g., a next-generation (NG) radio access network ((radio) access network, (R)AN) device), and a core network. (1) Terminal device

[0098] In embodiments of this application, the terminal devices (for example, UE 1 and UE 2 shown in Figure 2) may include user equipment (UE) and location management components. Petition 870250107457, dated 11 / 24 / 2025, page 34 / 138 28 / 124 components, LMCs). The UE-LMC can be a component or application deployed on the terminal device, which has some LMF functions and is configured to support a PC5 interface positioning service. One LMC on each terminal device in Figure 2 is shown as dashed lines, to indicate whether the terminal device side may include the LMC or not. Figure 2 uses an example where both terminal devices include one LMC each.

[0099] The terminal device (e.g., UE1 or UE2 shown in Figure 2) shown in Figure 2 in embodiments of this application may be the terminal device in the communication systems shown in Figure 1. For example, UE1 and UE2 may be two terminal devices that are located within the coverage of the network device and are shown in (a) in Figure 1. For another example, one part of the terminal devices of UE1 and UE2 may be a terminal device that is located within the coverage of the network device and is shown in (b) in Figure 1, and the other part of the terminal devices of UE1 and UE2 may be a terminal device that is located outside the coverage of the network device and is shown in (b) in Figure 1. UE1 and UE2 may be two terminal devices that are located outside the coverage of the network device and are shown in (c) in Figure 1.

[00100] The terminal devices (for example, UE 1 and UE 2 shown in Figure 2, and a first terminal device in embodiments of this application) in embodiments of this application may include a device that provides voice and / or data connectivity to a user, for example, it may include a portable device with a wireless connection function or a processing device connected to a wireless modem. The terminal device may communicate with the core network via a radio access network (RAN) and exchange voice. Petition 870250107457, dated 11 / 24 / 2025, page 35 / 138 29 / 124 and / or data with RAN. The terminal device may include user equipment (UE), a wireless terminal device, a mobile terminal device, a device-to-device (D2D) terminal device, a vehicle-to-everything (V2X) terminal device (V2X may specifically include various application requirements such as vehicle-to-vehicle (V2V) direct communication, vehicle-to-infrastructure (V2I) direct communication, vehicle-to-pedestrian (V2P) direct communication, and vehicle-to-network (V2N) communication interaction), a machine-to-machine / machine-type communications (M2M / MTC) terminal device, an Internet of Things (IoT) terminal device, a subscriber unit, a subscriber station,A mobile station, a remote station, an access point (AP), a remote terminal device, an access terminal device, a user terminal device, a user agent, a user device, or similar. For example, a terminal device may include a mobile phone (or referred to as a cellular phone), a computer having a mobile terminal device, or a portable, pocket-sized, handheld, or computer-embedded mobile device. For example, a terminal device may be a device such as a personal communication service (PCS) phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, or a personal digital assistant (PDA). Alternatively,the terminal device can, Petition 870250107457, dated 11 / 24 / 2025, pp. 36 / 138 30 / 124 being a tablet or a computer with wireless transceiver function. Alternatively, the terminal device may be a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal in industrial control, a wireless terminal in autonomous driving, a wireless terminal in telemedicine, a wireless terminal in a smart grid, a wireless terminal in a smart city, a wireless terminal in a smart home, or similar. The terminal device also includes a limited device, for example, a device with low power consumption, a device with limited storage capacity, or a device with limited computing capacity.For example, the terminal device includes an information sensing device, such as a barcode, radio frequency identification (RFID), a sensor, a global positioning system (GPS), or a laser scanner.

[00101] By way of example and not limitation, in embodiments of this application, the terminal device may alternatively be a wearable device. A wearable device may also be referred to as a smart wearable device, intelligent wearable device or the like, and is a general term for wearable devices that are intelligently designed and developed for everyday use, utilizing wearable technology, for example, eyeglasses, gloves, watches, clothing and footwear. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. The wearable device is not only a hardware device but also implements a powerful function through software support, data exchange and cloud interaction. In a broad sense, a smart wearable device includes a complete and large-scale device that can implement all Petition 870250107457, dated 11 / 24 / 2025, pp. 37 / 138 31 / 124 or some functions without relying on a smartphone, for example, a smartwatch or smart glasses, and includes a device dedicated to only one type of application function and that needs to work in collaboration with another device such as a smartphone, for example, several smart bracelets, smart helmets or smart jewelry to monitor physical signals.

[00102] If the various terminal devices described above are located in a vehicle (for example, placed or installed in the vehicle), all terminal devices may be considered vehicle-mounted terminal devices. For example, vehicle-mounted terminal devices are also called on-board units (OBUs). The terminal device in embodiments of this application may alternatively be a vehicle-mounted module, a vehicle-mounted component, a vehicle-mounted chip, or an on-board unit that is incorporated into the vehicle as one or more components or units. The vehicle may implement the method in this application by means of the vehicle-mounted module, vehicle-mounted component, vehicle-mounted chip, or on-board unit.

[00103] In some embodiments of this application, the terminal device may also include a relay. Alternatively, any device capable of performing data communication with the base station may be considered a terminal device.

[00104] The terminal device in some embodiments of this application may be understood as a device or may be a module configured to implement a function of the terminal device. The module may be disposed of in the terminal device or may be disposed of independently of the terminal device. The module is, for example, a chip system. (2) Network device

[00105] The network device may include a device of Petition 870250107457, dated 11 / 24 / 2025, pp. 38 / 138 32 / 124 access network and / or a core network device. (2.1) Network access device

[00106] The access network (AN) device (e.g., a base station) may be a device that communicates with a wireless terminal device via an air interface in an access network through one or more cells. For example, the access network device may include an evolved NodeB (eNB, e-NodeB, or evolved NodeB) in an LTE system or a long-term evolution-advanced (LTE-A) system, may include a next-generation NodeB (gNB) in a fifth-generation (5G) mobile communication technology New Radio (NR) system, or may include a central unit (CU) and a distributed unit (DU) in a cloud radio access network (Cloud RAN) system. This is not limited in embodiments of this application.

[00107] The eNB may include a macro base station, a micro base station (also called a small cell), a relay station, an access point, a wearable device, and a vehicle-mounted device, in various formats. The eNB may alternatively be a Transmission Reception Point (TRP).

[00108] The gNB may include a macro base station, a micro base station (also called a small cell), a relay station, an access point, a wearable device, and a vehicle-mounted device in various formats. The gNB may alternatively be a TRP or a transmission measurement function (TMF). The gNB may include a CU and a DU integrated into the gNB.

[00109] The terminal device can communicate with a service base station via a Uu link. For example, the terminal device can communicate with an Ng-eNB via Petition 870250107457, dated 11 / 24 / 2025, pp. 39 / 138 33 / 124 of an LTE-Uu link and with gNB via an NR-Uu link. Ng-eNB is an LTE base station and gNB is an NR base station. The base stations can communicate with each other via an Xn interface. (2.2) Core network device

[00110] The network elements related to positioning in the core network mainly include: an access and mobility management function (AMF) network element, a location management function (LMF) network element, and similar elements. Network elements may also include an evolutionary server mobile location center (E-SMLC) network element, a unified data management (UDM) network element, and an application function (AF) network element. The base station can communicate with the AMF network element via an NG-C interface, and the AMF network element can act as a router for communication between the gNB and the LMF.

[00111] The LMF network element can estimate the location of the terminal device, and the AMF communicates with the LMF through an NLs interface.

[00112] A location management device in embodiments of this application may be an LMF, a UE-LMC or similar in Figure 2, or it may be a network element that has the function of an LMF or UE-LMC in a future communication network, such as a 6th generation (6G) network. This is not limited to this application.

[00113] The solutions provided in embodiments of this application are described below, with reference to the attached drawings. Before the description, the terms or nouns present in the embodiments of this application are explained. (1) Sidelink (SL) Petition 870250107457, dated 11 / 24 / 2025, p. 40 / 138 34 / 124

[00114] In embodiments of this application, the side link may be a link established between devices of different types or of the same type, for example, it may be a link between terminal devices. The link between terminal devices includes a device-to-device (D2D) link defined in the 3rd Generation Partnership Project (3GPP) Release 12 / 13; vehicle-to-vehicle (V2V), vehicle-to-pedestrian (V2P), vehicle-to-infrastructure (V2I), vehicle-to-network (V2N) links and other links defined by 3GPP for vehicle-to-everything; V2X links based on an NR system in Version 14, Version 15, Version 16, Version 17, Version 18 and other future versions; and similar.

[00115] The side link, in some embodiments of this request, is the link between terminal devices. The side link can be a link for data communication between two terminal devices via a PC5 interface. The side link, in some embodiments of this request, may also be called a direct link, secondary link, or similar. (2) Reference signal

[00116] The reference signal in the modalities of this application can be understood as a reference signal whose transmission is carried out on the side link between the terminal devices and can be a reference signal used for positioning. The reference signal in the modalities of this application can also be called a side link reference signal or a side link positioning reference signal.

[00117] The reference signal in embodiments of this application may be a positioning reference signal (PRS), a sidelink positioning reference signal (SLPRS), or a demodulation reference signal ( Petition 870250107457, dated 11 / 24 / 2025, page 41 / 138 35 / 124 reference signal (DMRS) or a sidelink synchronization signal / physical sidelink broadcast channel block (S-SS / PSBCH block). The reference signal may alternatively be another signal, for example, a signal defined in the future.

[00118] In some embodiments of this application, part of the content is described using an example in which the reference signal is SL-PRS. In some embodiments of this application, SL-PRS may be replaced by another reference signal. (3) Resource pooling

[00119] New radio (NR) side link communication is performed based on resource pooling. Resource pooling is a block of time-frequency resources used for SL communication. Frequency-domain resources included in the resource pooling are consecutive. Time-domain resources included in the resource pooling can be consecutive or non-consecutive. Different resource poolings are distinguished by SL resource pooling identifiers (e.g., SL-ResourcePoolID). A terminal device performs reception in a receiving resource pooling and transmission in a transmitting resource pooling. If the resource poolings have the same resource pooling index, the time-frequency resources in the resource poolings can be considered to completely overlap.

[00120] In a sidelink on unlicensed spectrum (SL-U), a frequency band is shared by terminal devices in a plurality of ways. For example, an SL terminal device, a wireless fidelity (Wi-Fi) terminal device, and a Bluetooth terminal device all perform the Petition 870250107457, dated 11 / 24 / 2025, p. 42 / 138 36 / 124 transmission in the same frequency band. Therefore, the concept of a dedicated SL resource set does not necessarily exist. The SL resource set can also be understood as a set of resources that can be used for SL transmission. In some modalities, the resource set may also be called a channel, operating channel, nominal channel, or bandwidth. In other words, the resource set, channel, and bandwidth represent a set of resources that can be used for SL transmission. (4) Time domain resource

[00121] The time-domain feature includes a symbol, a slot, a mini-slot, a partial slot, a sub-frame, a radio frame (or referred to as a frame), a sensing slot, and the like.

[00122] A slot can include at least one symbol, for example, 14 symbols or 12 symbols. There can be different types of slots, and the number of symbols included in the different types of slots is different. For example, a mini-slot includes symbols whose quantity is less than 7, for example, two symbols, three symbols or four symbols, and a regular slot includes seven symbols, 14 symbols or similar.

[00123] Based on different subcarrier spacings, the symbol lengths can be different. Therefore, the slot lengths can be different. For example, the length of a slot corresponding to a 15 kHz subcarrier spacing is 0.5 ms, and the length of a slot corresponding to a 60 kHz subcarrier spacing is 0.125 ms. (5) Frequency domain resource

[00124] The frequency domain feature includes a subchannel, a frequency band, a carrier, a Petition 870250107457, dated 11 / 24 / 2025, page 43 / 138 37 / 124 bandwidth part (BWP), a resource block (RB), a grouping of resources, or similar.

[00125] A subchannel is a minimal unit of a frequency domain resource occupied by a shared physical side link channel, and a subchannel may include one or more resource blocks (RBs). A bandwidth of a wireless communication system in the frequency domain may include a plurality of RBs. For example, in possible bandwidths of an LTE system, the quantities of physical resource blocks (PRBs) included may be 6, 15, 25, 50, and the like.

[00126] In the frequency domain, an RB can include multiple subcarriers. For example, in the LTE system, an RB includes 12 subcarriers, and each subcarrier spacing can be 15 kHz. Certainly, other subcarrier spacing can be used alternatively, for example, a subcarrier spacing of 3.75 kHz, 30 kHz, 60 kHz, or 120 kHz. This is not limited to what is discussed in this document.

[00127] For a subcarrier or a resource element (RE), the subcarrier or RE is a minimum frequency resource unit on a specific symbol in a multicarrier system. In embodiments of this application, the RE can be a resource unit of a time-frequency resource, for example, it can be considered a minimum time-frequency resource unit. For example, an RE occupies a symbol in the time domain and occupies a subcarrier in the frequency domain. In other words, a subcarrier on a symbol in the time domain is an RE. In this application, the subcarrier and the resource element can be used interchangeably and include the same content. (6) Sending the reference signal in a comb manner

[00128] A network device can provide information of Petition 870250107457, dated 11 / 24 / 2025, page 44 / 138 38 / 124 Configuration of reference signal resources to the terminal device using radio resource control (RRC) or similar signaling. Resource configuration information may include information such as the number of antenna ports, a transmissionComb value, and a combOffset value. A comb value in embodiments of this application may be the transmission Comb value, a comb size value, or the comb offset value.

[00129] The reference signal can be sent in comb mode.

[00130] The reference signal is sent in comb mode in the frequency domain. The transmission comb value (transmissionComb), or referred to as the comb value, can be represented as Comb in embodiments of this application. For Comb=N, where N is a positive integer, a mapped reference signal appears in a range of (N-1) REs in the frequency domain, and no transmission is carried out on the remaining (N-1) REs. Comb=1 indicates that the reference signal occupies contiguous subcarriers in one frequency domain direction. Comb=2 indicates that the reference signal occupies one subcarrier in a range of one subcarrier in the frequency domain direction, and no transmission is carried out on any subcarrier other than the subcarrier used for transmitting the reference signal.Comb=4 indicates that the reference signal occupies one subcarrier in a range of three subcarriers in the frequency domain direction, and no transmission is carried out on any other three subcarriers other than the subcarrier used for transmitting the reference signal. A lower Comb value indicates denser frequency domain features occupied by the reference signal, and a higher Comb value indicates sparser frequency domain features occupied by the reference signal. The device. Petition 870250107457, dated 11 / 24 / 2025, page 45 / 138 Network 39 / 124 can also configure a reference signal pattern for the terminal device. The reference signal pattern can indicate the location of a resource occupied by the reference signal.

[00131] The following example uses the SL-PRS reference signal to provide descriptions of the comb-mode transmission. The SL-PRS can alternatively be replaced by another reference signal. Figures 3A and 3B are diagrams of two examples of transmitting a reference signal in a comb-mode.

[00132] As shown in Figure 3A, a rectangular grid in Figure 3A represents an RE. When Comb = 2, a comb offset value (combOffset) is a value in {0, 1}. A plurality of REs can be divided into a comb 0 numbered as 0 (comb 0 includes all REs numbered as 0 in Figure 3A) and a comb 1 numbered as 1 (comb 1 includes all REs numbered as 1 in Figure 3A). The comb represents quantities of resource elements (REs) that are occupied in an equal interval in a symbol and that are used to send the reference signal. If the comb offset value (combOffset) is 0, a terminal device sends an SL-PRS on comb 0, that is, it sends the SL-PRS on all REs numbered with 0 in Figure 3A. If the comb offset value is 1, the terminal device can send an SL-PRS on comb 1, that is, send the SL-PRS on all REs numbered with 1 in Figure 3A (not shown in Figure 3A).

[00133] As shown in Figure 3B, a rectangular grid in Figure 3B represents an RE. When Comb = 4, a comb offset value (combOffset) is a value in {0, 1, 2, 3}. A plurality of REs is divided into a comb 0 numbered as 0 (comb 0 includes all REs numbered as 0 in Figure 3B), a comb 1 numbered as 1 (comb 1 includes all REs numbered as 1 in Figure 3B), a comb 2 numbered as 2 (comb 2 includes Petition 870250107457, dated 11 / 24 / 2025, page 46 / 138 40 / 124 all REs numbered as 2 in Figure 3B) and a comb 3 numbered as 3 (comb 3 includes all REs numbered as 3 in Figure 3B). If the comb offset is 1, a terminal device sends an SRS on comb 1. In other words, the terminal device sends the SRS on all REs numbered as 1 in Figure 3B. If the comb offset value (combOffset) is 2, the terminal device can send an SL-PRS on comb 2, that is, send the SL-PRS on all REs numbered 2 in Figure 3B (not shown in Figure 3B).

[00134] In some embodiments of this application, different comb offsets may be configured for different terminal devices to implement frequency division multiplexing. For example, a comb offset value configured for terminal device 1 is 0, and a comb offset value configured for terminal device 2 is 2. (7) Mode of sending a physical sidelink control channel (PSCCH) and the reference signal

[00135] In embodiments of this application, a reference signal resource pool may be a shared resource pool or a dedicated resource pool. Resources in the dedicated resource pool may be used specifically for the transmission of the reference signal. For example, to provide greater bandwidth, the dedicated resource pool is specifically designed to ensure the transmission of the reference signal. Resources in the shared resource pool may be used for the transmission of a PSSCH and also for the transmission of the reference signal. In one possible example, the terminal device may obtain some symbols from the symbols occupied by the PSSCH to send the reference signal.

[00136] The following is an example in which the sign of Petition 870250107457, dated 11 / 24 / 2025, p. 47 / 138 The 41 / 124 reference is the SL-PRS for providing descriptions of the transmission in the comb manner. The SL-PRS can alternatively be replaced by another reference signal. Figures 4A and 4B are example diagrams of various ways of transmitting a PSCCH and a reference signal.

[00137] As shown in Figure 4A, a terminal device sends the PSCCH and a PSSCH. The PSCCH is mapped from a lower PRB of the PSSCH. The PSCCH and a portion of the PSSCH occupy the same symbol, but are separated in the frequency domain. The resources occupied by the PSSCH include resources occupied by 2a sidelink control information (SCI) (the 2a SCI can also be understood as second SCI or second-order SCI, and can be used to carry some control information) and a demodulation reference signal (DMRS), resources occupied by the 2a SCI, resources occupied by data (marked as DATA in the figure), and resources occupied by the DMRS.As shown in Figure 4A, the terminal device can obtain time-domain resources through division, to allocate time-domain resources for Automatic Gain Control (AGC) and a gap (the gap is marked as GAP in the figure). As shown in Figure 4A, information transmission, such as data or DMRS, can be initially performed at time-domain symbol locations 6, 7, 8, and 9. In a possible example, time-domain symbol locations 6, 7, 8, and 9 are used for the transmission of an SL-PRS. As shown in Figure 4A, the SL-PRS can be sent together.

[00138] As shown in Figure 4B, the terminal device sends the PSCCH and an SL-PRS. The terminal device can also obtain time-domain resources through division, to allocate time-domain resources to the AGC and a GAP. The PSCCH and SL-PRS sent by the terminal device Petition 870250107457, dated 11 / 24 / 2025, page 48 / 138 42 / 124 can occupy different time-domain symbols. A frequency-domain bandwidth occupied by SL-PRS can be larger than a frequency-domain bandwidth occupied by PSCCH (this is used as an example for illustration in Figure 4B). Alternatively, a frequency-domain bandwidth occupied by SL-PRS may not be larger than a frequency-domain bandwidth occupied by PSCCH. SL-PRS can be sent in a comb manner. For example, if Comb = 4, in one symbol, an SL-PRS is filled in a gap of three REs (as shown in Figure 4B). If Comb = 1, each RE is filled with an SL-PRS.

[00139] Next, we describe an example where the reference signal is SL-PRS. In this example, SL-PRS can alternatively be replaced by another reference signal. For example, on a transmission occasion i, the number of RBs of PSCCH is 2, the number of RBs of SL-PRS is 10, and Comb = 4. It can be learned that a ratio (a ratio between the number of RBs) between the number of resources of PSCCH and the number of resources of SL-PRS on transmission occasion i is 2:10. If, when setting the SL-PRS transmission power, the SL-PRS transmission power is determined based on the ratio between the number of resources of PSCCH and the number of resources of SL-PRS, while the comb value is not considered, the ratio between the transmission power of PSCCH and the transmission power of SL-PRS will also be 2:10. Assuming that the transmission power of the PSCCH at transmission time i is two power units, the transmission power of the SL-PRS is 10 power units.In some examples in embodiments of this application, for ease of understanding, the relationship between powers is used for description, and one unit of each transmission power is called a power unit. In embodiments of this application, when units of two powers are called power units, it can be understood that the units of... Petition 870250107457, dated 11 / 24 / 2025, page 49 / 138 43 / 124 The power of both powers is the same. In this example, the unit of power can be, for example, milliwatt or watt. Since the number of RBs of the PSCCH on transmission occasion i is 2, and one RB includes 12 REs, the average transmission power of the PSCCH in one RE is 2 / (2*12)=1 / 12 power units. Furthermore, since the number of RBs of the SL-PRS on transmission occasion i is 10, the average transmission power of the SL-PRS in each RE is 10 / (10*12)=1 / 12 power units. Considering that Comb=4, that is, a first terminal device sends an SL-PRS in an interval of three REs, the first terminal device performs a power increase in one RE used to send the SL-PRS. After the power increase, the average power in the RE used to send the SL-PRS is 4*10 / (10*12)=4 / 12 units of power. In the context of this application, / in a mathematical operation formula can be understood as division, and * can be understood as multiplication.

[00140] It can be learned from this example that if, when calculating the SL-PRS transmission power, the ratio between the PSCCH transmission power and the SL-PRS transmission power is determined directly based on the ratio between the amount of PSCCH resources and the amount of SL-PRS resources, without considering the comb value, the average SL-PRS transmission power at a receiving station will be different from the average PSCCH transmission power at the receiving station. When the first terminal device selects a resource to send SL-PRS and PSCCH, another terminal device measures the PSCCH RSRP from the first terminal device. If the PSCCH RSRP is less than a threshold, the other terminal device considers that the interference in the data transmission carried out on the resource is small and then selects the data transmission to the resource.However, since the average transmission power of SL-PRS in an RE is different from the average transmission power of PSCCH in an RE, even though the RSRP of PSCCH is in the feature. Petition 870250107457, dated 11 / 24 / 2025, page 50 / 138 Even if the 44 / 124 bandwidth is small, the SL-PRS RSRP on the resource can be large. Therefore, interference in data transmission performed by the other terminal device on the resource is strong. It can be concluded that, since the bandwidth value is not considered in the SL-PRS transmission power calculation, when the other terminal device selects a resource based on the PSCCH RSRP, the selected resource may be unsuitable.

[00141] Based on the problem above, the embodiments of this application provide several possible implementations. The first terminal device can determine the transmission power of the PSCCH or SL-PRS based, at least, on the comb value. Since the first terminal device considers the comb value when determining the transmission power of the PSCCH or SL-PRS, there is an association relationship between the average transmission power of the SL-PRS in an RE and the average transmission power of the PSCCH in an RE, such that the PSCCH RSRP measured by the other terminal device can reflect the SL-PRS RSRP. In this way, the other terminal device can select a suitable resource when performing resource selection based on the measured PSCCH RSRP.

[00142] The beneficial effects of the modalities of this application are described with reference to the previous examples. As the comb value is considered in the modalities of this application, in a possible implementation, the ratio between a second power value and a first power value is (4*2 / 10) = 2:2.5. The average power of the PSCCH in an RE is 1 / 12 power units. The average power of the reference signal in each RE is 2.5 / (10*12) power units. Considering that Comb = 4, i.e., the first terminal device sends a reference signal in an interval of three REs, the first terminal device performs a power boost in an RE used to send the reference signal. After the power boost, the average power in the RE is 4*2.5 / 120 = 1 / 12 power units. It can be learned from this example that the power ratio of the PSCCH to the signal Petition 870250107457, dated 11 / 24 / 2025, page 51 / 138 The reference 45 / 124 at the time of transmission is not 2:10, but 2:2.5. Therefore, an average PSCCH power value in an RE can be equal to (or close to, in some examples) an average reference signal power value in an RE, so that when the other terminal device measures the PSCCH RSRP from the first terminal device, the PSCCH RSRP can reflect the reference signal RSRP. In this way, the other terminal device can select the appropriate feature when performing feature selection based on the measured PSCCH RSRP.

[00143] The following describes in more detail the modalities of this application with reference to the preceding content and the attached drawings.

[00144] Based on the embodiments shown in Figure 1, Figure 2, Figure 3A, Figure 3B, Figure 4A and Figure 4B, and the preceding content, Figure 5 is a possible schematic flowchart of an example of a communication method according to an embodiment of this application. The method is presented using an example where an implementation body is a first terminal device. The first terminal device may be the terminal device in Figure 1, Figure 2, Figure 3A, Figure 3B, Figure 4A or Figure 4B, or a unit, a module or a chip (system) in the terminal device.

[00145] As shown in Figure 5, the method includes the following steps.

[00146] Step 501: The first terminal device obtains a first parameter.

[00147] The first parameter includes at least one comb value of a reference signal, a quantity of reference signal resources, or a quantity of PSCCH resources.

[00148] The reference signal in this embodiment of this application may be a reference signal transmitted by the first terminal device via a side link, for example, it may be a reference signal transmitted via a PC5 interface. The reference signal may be a signal of Petition 870250107457, dated 11 / 24 / 2025, page 52 / 138 46 / 124 reference signal used for positioning. For example, a measurement result of the reference signal can be used to position the first terminal device or another device. The reference signal may also be called the side-link reference signal, side-link positioning reference signal, or similar. For a related example of the reference signal, see the previous descriptions. Details are not described again.

[00149] The comb value of the reference signal in this embodiment of this application can be understood as a comb value in the previous process of sending the reference signal in a comb manner. For Comb=N, where N is a positive integer, a mapped reference signal (e.g., a positioning reference signal) appears in a range of (N1) REs in the frequency domain, and no transmission is carried out in the remaining (N-1) REs. The comb value may also have another name, e.g., transmission comb value. The name is not limited in this embodiment of this application.

[00150] The amount of reference signal resources in this embodiment of this application may include an amount of RB resources occupied by the reference signal in the frequency domain, or an amount of RE resources occupied by the reference signal in the frequency domain, an amount of subchannels occupied by the reference signal in the frequency domain, or the like.

[00151] The amount of PSCCH resources in this embodiment of this application may include an amount of RB resources occupied by the PSCCH in the frequency domain, or an amount of RE resources occupied by the PSCCH in the frequency domain, an amount of subchannels occupied by the PSCCH in the frequency domain, or the like.

[00152] In one possible embodiment, the amount of reference signal resources and the amount of PSCCH resources in this Petition 870250107457, dated 11 / 24 / 2025, page 53 / 138 47 / 124 modality of this request may be a quantity of resources (e.g., a quantity of RBs) of the reference signal and a quantity of resources (e.g., a quantity of RBs) of the PSCCH on a transmission occasion i. The transmission occasion i may be, for example, a transmission occasion whose index is i. The transmission occasion i may alternatively be written as a transmission occasion i in English. The transmission occasion may be understood as transmission time. The transmission time i may also be understood as a unit of time, and the unit of time may include one or more slots, one or more sub-slots, one or more time-domain symbols, one or more sub-slots, one or more time-domain subframes or the like, where i may be a positive integer, or i may be 0 and a positive integer.

[00153] For example, a slot includes a plurality of time-domain symbols, and the slot includes a PSCCH feature and a reference signal feature. In this embodiment of this application, the number of PSCCH features can be a number of RBs occupied by the PSCCH in the slot, and the number of reference signal features can be a number of RBs occupied by the reference signal in the slot.With reference to Figure 4B, the amount of PSCCH resources in this embodiment of this request can be the number of RBs occupied by PSCCH in a time-domain symbol 1 and a time-domain symbol 2 in Figure 4B, and the amount of reference signal resources in this embodiment of this request can be the number of RBs occupied by the reference signal in a time-domain symbol 4, a time-domain symbol 5, a time-domain symbol 6, a time-domain symbol 7, a time-domain symbol 8, a time-domain symbol 9, a time-domain symbol 10, a time-domain symbol 11, and a time-domain symbol 12 in Figure 4B.

[00154] Step 502: The first terminal device determines a first power value and determines a second value of Petition 870250107457, dated 11 / 24 / 2025, page 54 / 138 48 / 124 power based on the first parameter and the first power value; or the first terminal device determines a second power value and determines a first power value based on the first parameter and the second power value.

[00155] Step 503: The first terminal device sends the reference signal based on the first power value and sends the PSCCH based on the second power value.

[00156] Correspondingly, another terminal device (for example, a terminal device different from the first terminal device) receives the reference signal. The other terminal device (for example, the terminal device different from the first terminal device) receives the PSCCH.

[00157] Since one of the first power values ​​and the second power values ​​is determined based on the first parameter and the other one of the first power values ​​and the second power values, it can be considered that there is an association relationship between the first power value and the second power value, such that an average power value of the reference signal in an RE (e.g., an RE) is associated with an average power value of the PSCCH in an RE (e.g., an RE). In this way, the other terminal device can select a more suitable resource with reference to a PSCCH channel condition. In this embodiment of this application, an average power in an RE can also be called energy per RE (EPRE).

[00158] For example, there is also an association relationship between a PSCCH RSRP and a reference signal RSRP, i.e., the PSCCH RSRP can reflect the reference signal RSRP. Therefore, when another terminal device performs feature selection, the PSCCH RSRP measured by another terminal device can reflect both the PSCCH RSRP and the reference signal RSRP. Therefore, when another terminal device selects a feature where the PSCCH RSRP is less than a threshold, the reference signal RSRP at the feature can also be small, i.e., the Petition 870250107457, dated 11 / 24 / 2025, p. 55 / 138 49 / 124 Interference in data transmission performed by the other terminal device on the resource is small.

[00159] Furthermore, in this embodiment of this application, an average transmission power of the reference signal in an RE is associated, for example, with an average transmission power of the PSCCH in an RE that is close to or equal to it. With reference to Figure 4B, if the amount of resources occupied by the PSCCH in a time-domain symbol is different from the amount of resources occupied by the reference signal in a time-domain symbol, the PSCCH and the reference signal will have different symbol-level transmission powers. To ensure that a transmitting end has time to adjust the symbol-level transmission power, the first terminal device can configure an AGC between the PSCCH and the reference signal, so that the first terminal device has sufficient time to adjust the transmission power, and a receiving end can also have sufficient adjustment time.

[00160] Two possible implementations of step 502 are described below, using implementation A and implementation B. Implementation A: The first terminal device determines the first power value and the second power value based on the first parameter and the first power value. Implementation B: The first terminal device determines the second power value and the first power value based on the first parameter and the second power value.

[00161] Implementation A: The first terminal device determines the first power value and determines the second power value based on the first parameter and the first power value.

[00162] In this type of request, there may be an association between the second power value and the first power value. For example, a result of a mathematical operation (e.g., a quotient, a difference, a sum). Petition 870250107457, dated 11 / 24 / 2025, page 56 / 138 50 / 124 or a product) between the second power value and the first power value can be associated with the first parameter.

[00163] For example, the result of the mathematical operation (for example, the quotient, the difference, the sum or the product) between the second power value and the first power value can be associated with a first value.

[00164] The first value includes a quotient between the product of the PSCCH resource quantity and the reference signal comb value and the reference signal resource quantity. For example, the first value is the quotient between the product of the PSCCH resource quantity and the reference signal comb value and the reference signal resource quantity. Alternatively, the first value is a value associated with the quotient. For example, the first value is a result obtained by performing some mathematical operations on another parameter and on the quotient.

[00165] The first value can alternatively be expressed in another way. The first value can alternatively include a difference between the sum of the PSCCH resource quantity and the reference signal comb value and the reference signal resource quantity. For example, the first value is the difference between the sum of the PSCCH resource quantity and the reference signal comb value and the reference signal resource quantity. Alternatively, the first value is a value associated with the difference. For example, the first value is a result obtained by performing some mathematical operations on another parameter and the difference.

[00166] For example, the result of the mathematical operation (e.g., the quotient or the difference) between the second power value and the first power value can be the first value. For another example, the result of the mathematical operation between the second power value and the first power value can be a result of a mathematical operation between a value Petition 870250107457, dated 11 / 24 / 2025, page 57 / 138 51 / 124 is the default value and the first value. The default value can be, for example, a predefined adjustment value, and the result of the mathematical operation between the default value and the first value can be, for example, a result of a mathematical operation such as a sum of, a product of, a difference between, or a quotient of the default value and the first value. For another example, an association relationship is established between the result of the mathematical operation between the second power value and the first power value and the first value according to some formulas. For another example, the result of the mathematical operation (for example, the sum or the product) between the second power value and the first power value can be an associated value of a reciprocal of the first value.

[00167] In implementation A, in one possible implementation, the first terminal device determines the first power value, and the first terminal device determines the second power value based on the first power value and the first value.

[00168] In one possible implementation, the second power value is a sum or a product of the first power value and the first value.

[00169] 0 The following describes, according to formula (1), an example of a way to calculate the power value of PSCCH: PpscchÍO = PpRstO + W(---mprsB(í})[dBm] Formula (1)1ViRB W

[00170] In formula (1), Ppsccx (I) represents the transmission power of the PSCCH at the time of transmission i, Ppsr represents the transmission power of the reference signal at the time of transmission i, Comb represents the comb value of the reference signal, represent the number of resources (e.g., the number of RBs of the PSCCH) of the PSCCH at the time of transmission i, and represents the number of resources (e.g., the number of RBs of the reference signal) of the reference signal. Petition 870250107457, dated 11 / 24 / 2025, page 58 / 138 52 / 124 at the time of shipment i.

[00171] In each formula in this embodiment of this request, log is a logarithm, Ig represents a base-10 logarithm, and Ig can alternatively be replaced by logio. In this embodiment of this request, logio is also used to represent a base-10 logarithm. In each formula in this embodiment of this request, 101g(·) can be understood as 10*lg(·), where * represents multiplication, that is, a product of 10, and lg(·), where lg(·) represents a base-10 logarithm of a parameter between parentheses. For example, 10í,g(---mprs(T) ' represents Comb*MooCCH(i) is a logarithm of ---mprs(T)--- to base 10. The content of this part is also applicable to another formula, and is not described again in another formula.

[00172] In this embodiment of this request, a PRS subscript appears in each formula, for example, The PRS subscript indicates that this embodiment of this request is described using an example where the reference signal is a PRS or an SL-PRS, and a parameter in the formula is also described using the example where the reference signal is the PRS or the SL-PRS. The reference signal may alternatively be replaced by another signal. In this case, a way of representing a related parameter of the reference signal may be changed. For example, if the reference signal is neither the PRS nor the SL-PRS, the subscript of the parameter Ppxs(0) may be changed as needed. The content of this part also applies to another formula and is not described again in another formula.

[00173] In this application, a subscript PSCCH appears in each formula, for example, Ppsccx CC. The subscript PSCCH may indicate that the parameter is a parameter related to PSCCH. The content of this part also applies to another formula and is not described again in another formula. Petition 870250107457, dated 11 / 24 / 2025, page 59 / 138 53 / 124

[00174] In this embodiment of this application, the transmission power of the PSCCH on a side-link BWP b of a carrier f at the time of transmission i can also be represented as Ppsccjf in each formula. A transmission power of the reference signal on the side-link BWP b of the carrier f at the time of transmission i can also be represented as Ppss CO. In this application, carrier f indicates that a carrier index identifier is f, and BWP b indicates that a BWP index identifier is b. In Uu, a carrier can support a plurality of BWPs, and in the side-link, a carrier can support one BWP. In this type of application, to facilitate understanding, an example is used where a carrier index is identified as fe and a BWP index is identified as b, where f can be 0 and a positive integer, b can be 0 and a positive integer, and the values ​​of feb can be defined based on a real-world situation.The content of this section also applies to another formula and is not described again in another formula.

[00175] In this embodiment of this request, in Ppsccjí (C and CC, i in parentheses can be understood as the sending occasion i, the sending occasion i can be understood as a time unit, and an index of the time unit is identified as i in this request. The sending occasion i can alternatively be written as the transmission occasion i in English. The time unit can be understood as a unit in a time domain direction. For example, the time unit can be one or more slots, one or more sub-slots, one or more time domain symbols, one or more sub-slots, or one or more time domain sub-frames, where i can be a positive integer, or i can be 0 and a positive integer. The content of this part is also applicable to another formula, and is not described again in another formula.

[00176] In formula (1), an example where the quantity of Petition 870250107457, dated 11 / 24 / 2025, pp. 60 / 138 54 / 124 resources is the quantity of RBs used for description. Therefore, the subscripts of and in formula (1) are each one RB. If the quantity of resources needs to be calculated in another unit in some implementations, the subscript of RB in the formula provided in this embodiment of this application may alternatively be substituted. For example, in this embodiment of this application, if the quantity of resources is calculated in one RE, the subscripts of RB may alternatively be substituted for RE.

[00177] In this part of the application, dBm (for example, at the end of formula (1) and in another formula) in each formula represents a unit: decibel relative to one milliwatt (dBm) of a parameter that needs to be calculated in the formula. For example, at the end of formula (1) indicates that the unit of the parameter Precch (0) that needs to be calculated in formula (1) is dBm. A unit of another parameter of a power value in the formula can be converted to dBm. For example, a unit of Ppre CO in formula (1) can be converted to dBm. The content of this part also applies to another formula and is not described again in another formula.

[00178] When a unit in each formula changes, each formula in this mode of this request may also change. For example, when the unit in the previous formula (1) is not dBm, the previous formula (1) may alternatively be replaced by the following formula: Ppsacíí UJ—tpsE UJ * t. orPpscch(0 - Pprs^ / Ç^^pscch^ · In the formula, Pfeccx CO represents the transmission power of the PSCCH at the time of transmission i, and Prrs CO represents the transmission power of the reference signal at the time of transmission i. A difference between the formula and formula (1) lies in the fact that the units of Pfeccx CO and Prre (0 in Petition 870250107457, dated 11 / 24 / 2025, p. 61 / 138 55 / 124 in the formula are not dBm and may be, for example, watts or milliwatts. For the meanings of other parameters in the formula, see the formula descriptions (1).

[00179] In each formula of this type of application, represents multiplication and / represents division. The content of this section also applies to other formulas and is not described again elsewhere.

[00180] The first terminal device can calculate the second power value according to formula (1) above. With reference to formula (1) above, it can be learned that if the second power value is DC, the first power value can be equivalent to (C, and the first value can be understood as ¢0 in formula (1), or the first value 101g 1.11111] can be understood as ΜΪΐΓϊϊ)J in formula (1).

[00181] The first value can alternatively be expressed as any of the following formulas. For the meanings of the related parameters, see the descriptions of the previous formula (1). Details are not described again: 10Z^(Comb )+ 10lg(JWBBCCH(i)} - 101g ; 10Z^(Comb * 10lg(M^s(i)) ; 10Z^(Comb) + 10lg(MBBCCH(í) / MBBs(í)); lOZg (Comb / MBBs(i)) + 10lg(MBBCCH(Q) ; m^s(Q Comb*MBBCCH(i)' oiqí____Y U \Comb*MBBCCH(i) / ' — 10lg (Comb) - 10Z^(M™(í))+ 10Z^(Mffs(Z)); - 101g (Comb * M?SBCCH(í)) + 10lg(M™s(i)) ; — 101g (Comb)- ioz5(M™(í)Mis(í)) ; or - 101g (Comb 10lg(M™CCH(iJ) .

[00182] Alternatively, there may be another association between the first power value, the second value Petition 870250107457, dated 11 / 24 / 2025, page 62 / 138 56 / 124 of the power and the first value (for example, the three parameters can alternatively form another mathematical operation formula in combination with another parameter). For example, the previous formula (1) can alternatively be replaced by one of the following formulas. The meanings of the related parameters are the same as in formula (1). Details are not described again: PpSCCH(í) = PpRstO + 10 / ^ (Comb) + 10lg (MRpS'C'H(í)) - 10lg(MpBS(í))[dBm] ; PpsccHÍO = PpRs(í) + 10lg (Comb * MPBcch(í)) - 10lg (M™s(í))[dBm] ; PPSCCH(í) = PpRs(í) + 10lg (Comb) + 10lg (M^Ba:H(í) / M^BS(í))[dBm] ; PpsccH(í)= PpRS(í)+ 10lg (Comb / MBBS(í)') + 10lg (MpBCCH(íy)[dBm]; or Mprs(R) PpSCCH(í) = PpRs(í) — 10^(--^^^)^] . LUm-U*M^p (L)

[00183] In implementation A, the first terminal device determines the first power value in several ways. Implementation A1, implementation A2, implementation A3, and implementation A4 are used as examples for description below.

[00184] Implementation A1: The first power value is determined based on at least one of the following parameters: a transmission power of the first terminal device; a transmission power of the first terminal device based on a first CBR and a first transmission priority; a fifth power value; or a sixth power value.

[00185] In a possible example, the first power value can be obtained according to the following formula (2): PpRS(i) = min (PCMAX'PMAX,CBR,l'min (PpRS,D(i) PpRS,SL(i)')') [dBm] Formula (2)

[00186] In formula (2), PPRs(i) represents the transmission power of the reference signal at the time of transmission i (PpRs(i) can be considered as the first power value), Pcmax represents the transmission power of the first terminal device, PMAX,CBR;1 represents the transmission power of the first terminal device based on the first CBR and the first Petition 870250107457, dated 11 / 24 / 2025, p. 63 / 138 57 / 124 transmission priority, Pprs,d(í) represents the fifth power value and PPrS,Sl(í) represents the sixth power value.

[00187] In this form of the request, min(a, b) indicates that a smaller value should be assumed for parameter a and parameter b. Parameters a and b are used as examples to describe the meaning of min in this document. In this form of the request, * represents multiplication. The content of this paragraph also applies to other parts and will not be described again.

[00188] In this embodiment of this request, 1 in a subscript of Pmax,cbr,i is used to distinguish PMax,cbr,i from PMax,cbr,2 in a subsequent formula, such as formula (12). PMax,cBR,ie PMax,cBR,2 in this embodiment of this request may be equal or different. In one possible implementation, PMax,cBR,ie PMax,cBR,2 are equal, and both may be represented as PMax,cBR.

[00189] Formula (2) above may also have other variations. For example, some other parameters may be added to or removed from formula (2), or some weights may be defined for some parameters in formula (2). In one possible implementation, formula (2) may alternatively be transformed into the following formula: PPRS(i)=min(PCMAX,pmax,cbr,i,pprs,d(i),pprs,sl(i)) [dBm]. For the meanings of the parameters in the formula, see the related descriptions of formula (2). Details are not described again.

[00190] In addition to the previous example, the first terminal device can alternatively determine the first power value in another way. For example, the first terminal device can determine a lower value in the fifth power value and the sixth power value as the first power value. In this way, the first power value can be reduced as much as possible, thus reducing the power consumption of the terminal device. In another example, the first terminal device can determine a lower value in the fifth power value of Petition 870250107457, dated 11 / 24 / 2025, page 64 / 138 58 / 124 power, the sixth power value and a value specified as the first power value, where the specified value is a smaller or larger value in Pcmaxe?max,cbr,i · For example, the first terminal device is far from a network device, but the first terminal device is close to a second terminal device. Therefore, a downlink path loss may be large, the fifth power value may be large, a sidelink path loss may be small, and the sixth power value may be small. If the larger value in PcmaxePmax,cbr,iÍor is selected as the specified value, for example, if the specified value is Pcmax, the first terminal device may still determine the first power value based on Pcmax· For example, the sixth power value may be selected as the first power value.In this way, communication between the terminal devices (between the first and second terminal device) can be guaranteed to the maximum extent possible.

[00191] 0 The following describes in more detail the parameters in formula (2) using an Al.1 parameter, an Al.2 parameter, an Al.3 parameter and an Al.4 parameter. Parameter Al. 1: ^cmax

[00192] In this application, Pcmax can be understood as the transmission power of the first terminal device, and could be, for example, the maximum transmission power of the first terminal device. Therefore, a target transmission power can be determined based on the transmission power of the terminal device, so that the determined target transmission power best matches the transmission power of the terminal device. Parameter Al.2: PMax,cbr,i [ 00193] PMax,cbr,i includes the transmission power of the first terminal device based on the first CBR and the first transmission priority. The first transmission priority may be a reference signal priority. In some Petition 870250107457, dated 11 / 24 / 2025, p. 65 / 138 59 / 124 possible modes, the first transmission priority can alternatively be a PSCCH priority or a PSSCH priority.

[00194] The first CBR can be understood as a CBR of a resource grouping corresponding to the reference signal. In this way, the first terminal device can determine the first power value based on the transmission power of the first terminal device, based on the first CBR and the first transmission priority, so that the first power value can better correspond to the actual transmission power of the first terminal device. The first CBR in this embodiment of this application may alternatively be a CBR of a resource grouping corresponding to the PSCCH, or a CBR of a resource grouping corresponding to the PSSCH. The first CBR may be the same as or different from a subsequent second CBR.

[00195] For example, Pmax,cbr,i can be a maximum transmission power of the first terminal device based on the first CBR and the first transmission priority. Pmax,cbr,i can be indicated by a parameter (the parameter can have a plurality of names, for example, the parameter can be named sl-MaxTxPower-RS) provided by the network device. Pmax,cbr,i can be transmitted in an RRC message or in a Side Link Resource Pool (SLresource Pool) message. In some cases, the network device may not be configured Pmax,cbr,i for the first terminal device, and the first terminal device may not consider the first power value Pmax,cbr,i when determining the first power value, or the first terminal device may consider Pmax,cbr,i and Pcmax to be equal. Parameter A1.3: Fifth power value

[00196] The fifth power value is associated with at least one initial power control value of the reference signal based on the downlink path loss of the first. Petition 870250107457, dated 11 / 24 / 2025, p. 66 / 138 60 / 124 terminal device, in the amount of reference signal resources, in a downlink path loss adjustment coefficient or in a downlink path loss value.

[00197] In one possible implementation, the fifth power value is obtained according to the following formula: Pprs,d ¢0=PoPRS'd+· (i)} 4- ctD1PLD1[dBm] Formula ( 3

[00198] In formula (3), Pprs,d0) represents the fifth power value, Poprs>d represents the initial power control value of the reference signal based on the downlink path loss of the first terminal device, I·1! represents a predefined value (which may be a pre-configured value), MrbS(Í) represents the amount (e.g., the number of RBs of the reference signal) of resources occupied by the reference signal at the time of transmission i, aD1 represents the downlink path loss adjustment coefficient and PLD1 represents the downlink path loss value.

[00199] In this form of the application, the subscript D in the formula can also be understood as the initial letter of a descending link and can be understood as a descending link. The meaning of the subscript D in another formula is similar and will not be described again.

[00200] In this embodiment of this application, 1 in a subscript of Pu is used to distinguish Σί from lQ, ^3, and 1X4 in this embodiment of this application. In this embodiment of this application, any two of Pu, lQ, ^3, and 1X4 may be different or equal. When any two of Σί, ^3, and ^4 are equal, the same parameters may be represented as the same parameter. For example, a plurality of the same parameters may be represented as P. In this embodiment of this application, 1 in a subscript of aDi is used to distinguish aDi from aD2 in a part as formula (13) in this Petition 870250107457, dated 11 / 24 / 2025, p. 67 / 138 61 / 124 embodiment of this application. In this embodiment of this application, aDi and aD2 may be different or equal. When ^Di and aD2 are equal, both may be represented as 3d. In this embodiment of this application, 1 in a subscript of PLD1 is used to distinguish PLD1 from PLD2. In a part like formula (13) in this embodiment of this application. In this embodiment of this application, PLD1 and PLD2 may be different or equal. When PLD1 and PLD2 are equal, both may be represented as PLD.

[00201] In formula (3), Poprs>d can be a preconfigured value, for example, it can be configured using a dl-PO-RS parameter in an RRC message (for example, an SL-ResourcePool message). In another example, in formula (3), aDi can be a preconfigured value, for example, it can be configured using a dl-Alpha-RS parameter in an RRC message (for example, an SL-ResourcePool message). If ^Di is not configured, aDl· can be considered as 1.

[00202] 0 The first terminal device can estimate the downlink path loss based on a downlink signal. For example, in formula (3), fad), i.e., the first terminal device can estimate the downlink path loss value using a reference signal whose reference signal feature index is ^d. Specifically, the downlink path loss value can be obtained by subtracting an RSRP obtained by the first terminal device measuring the reference signal whose reference signal index is ^d from a reference signal transmission power, and the transmission power can be obtained by the first terminal device from the network device. [ 0 0203]When the network device does not configure some parameters in formula (3), the first terminal device may not Petition 870250107457, dated 11 / 24 / 2025, pp. 68 / 138 62 / 124 consider the fifth power value in a process of determining the first power value. Alternatively, the fifth power value can be represented using a formula: Pprs,d(i) = min(PCMAX,PMylxCBRjl)[dBm] . For the meanings of the parameters in the formula, see the contents of the previous formula (2). Details are not described again.

[00204] In this embodiment of this request, the fifth power value may alternatively be determined in another way. For example, the fifth power value is the sum of PoPRS>Dedo value of the downlink path loss in formula (3). For another example, the fifth power value is determined based on Poprs>dena amount of resources occupied by the reference signal on the occasion of sending i in formula (3). The previous formula (3) is just one possible example. Parameter Al. 4: Sixth power value

[00205] 0 The sixth power value is associated with at least one initial reference signal power control value based on the side link path loss of the first terminal device, the amount of reference signal resources, a side link path loss adjustment coefficient, or a side link path loss value.

[00206] In one possible implementation, the sixth power value is obtained according to the following formula: Pprssl ¢0 = Pnn10 login(2^ ' ctaL1PLiL1[dBm] % -7&1U ί, Ka % - / aLJ. jLIL J FÓ ΤΓΓΠ.Ό. 13. ( 4 )

[00207] In formula (4), Pprs,slO) represents the sixth power value, Poprs>sl represents the initial power control value of the reference signal based on the side link path loss of the first terminal device, represents a predefined value (which may be a pre-configured value), MRgS(i) represents the amount (e.g., the number of RBs of the reference signal) of resources occupied by the signal. Petition 870250107457, dated 11 / 24 / 2025, p. 69 / 138 63 / 124, referenced at the time of shipment, represents the side link path loss adjustment coefficient, and PLsl1 represents the side link path loss value.

[00208] In this form of this request, the subscript SL in the formula can also be understood as an abbreviation for lateral link and can be understood as a lateral link. The meaning of the subscript SL in another formula is similar and will not be described again.

[00209] In this embodiment of this application, 1 in a subscript of is used to distinguish PLsl1 from PLSL2 in a part as formula (14) in this embodiment of this application. In this embodiment of this application, α5·ιι and PLSL2 may be different or equal. When PLsl1 and PLSL2 are equal, both may be represented as PLsl1. In this embodiment of this application, 1 in a subscript of PLsl1 is used to distinguish PLsl1 from PLSL2 in a part as formula (14) in this embodiment of this application. In this embodiment of this application, PLsl1 and PLSL2 may be different or equal. When PLsl1 and PLSL2 are equal, both may be represented as PLSL1.

[00210] In formula (4), Poprs>sl can be a preconfigured value, for example, it can be configured using an sl-PO-RS parameter in an RRC message (for example, an SL-Powercontrol message). In another example, in formula (4),hsli can be a preconfigured value, for example, it can be configured using an sl-Alpha-RS parameter in an RRC message (for example, an SL-Powercontrol message). Sea&Ll is not configured,asLi can be considered as 1.

[00211] In one possible implementation, the transmission of the reference signal can be carried out between the first terminal device and the second terminal device, and the first terminal device can determine the side link path loss value based on the reception power information (by Petition 870250107457, dated 11 / 24 / 2025, pp. 70 / 138 64 / 124 example, an RSRP) and in the transmission power information of the reference signal. In another possible implementation, the side link path loss value can be configured by the network device, or the downlink path loss value is used as the side link path loss value.

[00212] The parameters in formula (4) can be configured by the network device, for example, using an RRC message. When the network device does not configure some parameters in formula (4), the first terminal device may not consider the sixth power value in a process of determining the first power value. Alternatively, the sixth power value can be represented using a formula: PPrS,sl(i) = minÇPCMAX>PMAX,CBR,i)[áBm]. For the meanings of the parameters in the formula, see the content of formula (2) above. Details are not described again.

[00213] In this embodiment of this request, the sixth power value may alternatively be determined in another way. For example, the sixth power value is the sum of POpRS,SLe and the side link path loss value in formula (4). For another example, the sixth power value is determined based on POpRS,SLe and the amount of resources occupied by the reference signal at the time of sending i in formula (4). The previous formula (4) is just one possible example.

[00214] In this mode of this request, after the first terminal device determines the second power value, this value may be large. For example, the second power value is greater than the transmission power of the first terminal device. In another example, the second power value is greater than the transmission power of the first terminal device based on the second CBR and the second transmission priority. In this case, the first terminal device may update the second power value and the first power value again, and send the Petition 870250107457, dated 11 / 24 / 2025, page 71 / 138 65 / 124 reference signal and PSCCH based on updated power values, to reduce the second power value, so as to avoid, as much as possible, an excessively large second power value.

[00215] In the previous step 503, in one possible implementation, when the second power value (e.g., the second power value determined in step 502) is greater than a second value, the first terminal device uses the second value as an updated second power value and sends the PSCCH based on the updated second power value. The first terminal device updates the first power value based on the updated second power value and sends the reference signal based on the updated first power value.

[00216] The second value may be a lower value in the transmission power of the first terminal device and in the transmission power of the first terminal device based on the second CBR and the second transmission priority. Alternatively, the second value may be a higher value in the transmission power of the first terminal device and in the transmission power of the first terminal device based on the second CBR and the second transmission priority.

[00217] In one possible implementation, the first terminal device determines the first updated power value based on the first parameter and the second updated power value.

[00218] C The following describes, according to formula (5), an example of how to calculate the updated power value of the reference signal. In formula (5), Pprs (0 can be considered the first updated power value and Ppsccn ¢0 can be considered the second updated power value: PpRs(i) = Ppscch(í) - 10Zg(Com^s^ -)[dBm] Formula (5)1V1RB W

[00219] In formula (5), Ppsccn ¢0 represents the power of Petition 870250107457, dated 11 / 24 / 2025, p. 72 / 138 66 / 124 PSCCH transmission at the time of transmission i, Prrs ¢0 represents the transmission power of the reference signal at the time of transmission i, Comb represents the comb value of the reference signal, represen-|-a represents the amount of resources (e.g., the number of RBs of the PSCCH) of the PSCCH at the time of transmission i, and represents the amount of resources (e.g., the number of RBs of the reference signal) of the reference signal at the time of transmission i.

[00220] When a unit in each formula changes, each formula in this mode of this request may also change. For example, when a unit in the previous formula (5) is not dBm, the previous formula (5) may alternatively be replaced by the following formula: Wi) = PpSCChO) / / ''^ ·In the formula, © represents the transmission power of the PSCCH at the time of transmission i, and ¢0 represents the transmission power of the reference signal at the time of transmission i. A difference between the formula and formula (5) lies in the fact that the units of (I) and ¢0 in the formula are not dBm, but may be, for example, watts or milliwatts. For the meanings of other parameters in the formula, see the descriptions of formula (5).

[00221] The previous formula (5) can alternatively be replaced by one of the following formulas. The meanings of the related parameters are the same as in formula (5). Details are not described again: Pprs(í) = Ppscch(í) - lOZ^(Comb) - 10Z^(M™(í)) + 10lg(M™s(í))[dBm] ; PpRs(i) = PpscchG) - WlgÇComb * + 101g (M™s(0)[dBm]; Pprs(í) = PpscchG) - WlgÇComb) - 101g ( M™CCH(i) / M™s(i»[dBm] ; PpRs(i) = PpscchG) - 10lg(Comb / M™sW - 101g (M™CCH(i»[dBm]; or Petition 870250107457, dated 11 / 24 / 2025, page 73 / 138 67 / 124 Pprs(í) = Ppscch(í) + WLJÍZJ[dBm]. ffLu*iyiRBxJ'J

[00222] 0 The first power value and the second power value are updated to avoid an excessively high second power value and to control the ratio between the first power value and the second power value. In this way, the transmission power of the reference signal on a resource is equal to or close to the transmission power of the PSCCH on a resource, allowing the other terminal device to select a more suitable resource when performing resource selection based on the PSCCH's RSRP, minimizing interference in the information transmission performed on the selected resource.

[00223] Implementation A2: The first power value is determined based on a third power value.

[00224] In implementation A2, the first terminal device can determine the first power value based on the third power value.

[00225] The third power value is determined based on the transmission power of the first terminal device, the amount of resources of the reference signal, the amount of resources of the PSCCH and the comb value of the reference signal.

[00226] The third power value is a difference between, or a quotient of, the transmission power of the first terminal device and the first value.

[00227] In a possible example, the third power value can be obtained according to the following formula (6): , .π Ί, „ „ . / Cowi£>*MdoCCH(í)\r Ίthird power value= rCMAX— Img ---mPRS(..^---J [atím] Formula (6)

[00228] In formula (6), Pcmax represents the transmission power of the first terminal device, Comb represents the comb value of the reference signal, represents the amount of resources (e.g., the number of RBs of the PSCCH) of the PSCCH at the time of transmission i, and represents the amount Petition 870250107457, dated 11 / 24 / 2025, page 74 / 138 68 / 124 of resources (e.g., the number of RBs of the reference signal) of the reference signal at the time of sending i. For parameters in formula (6), see the related parameters in formulas (1) and (2) above. Details are not described again.

[00229] In addition to the solution for calculating the third power value shown in formula (6) above, there may be other calculation solutions for the third power value. For example, the third power value may be a sum or a product of the transmission power of the first terminal device and a predefined value, to make the third power value less than the transmission power of the first terminal device, so as to reduce the first power value and further reduce the possibility of the second power value being greater than the transmission power of the first terminal device. [ 00230]When a unit in each formula changes, each formula in this mode of this request may also change. For example, when a unit in the previous formula (6) is not dBm, the previous formula (6) may alternatively be replaced by the following formula: third power value cmax / L or third power value = Pcmax * (-----007777—). In the formula, the third power value represents the transmission power of the PSCCH at the time of transmission i, and Pcmax represents the transmission power of the reference signal at the time of transmission i. A difference between the formula and formula (6) lies in the fact that the units of third power value and Pcmax in the formula are not dBm, and may be, for example, watts or milliwatts. For the meanings of other parameters in the formula, see the descriptions of formula (6).

[00231] In one possible implementation, formula (6) can, Petition 870250107457, dated 11 / 24 / 2025, p. 75 / 138 Alternatively, 69 / 124 can be replaced by one of the following formulas. The meanings of the related parameters are the same as in formula (6). Details are not described again: third power value = Pcmax - 10 / ^(Comb) - 10lg(MpBCCH(i)') + 10lg(M™s(Í)-)[dBm]; third power value = Pcmax— 10lg(Comb * MrbCCH(í)) + 10lg (M™s(iy)[dBm] ; third power value = Pcmax - 10lg(Comb) — 10lg (MRBCCH(Q / M™s(iy)[dBm] ; third power value = Pcmax— 10lg(Comb / 'MrbS(í)) — 10lg (MfêCCH(i))[dBm]; or third value of mprs(i) power = PCMAX+ 10lg(Comb*R^SCCHÇÍ)) [dBm].

[00232] The first terminal device can also determine the first power value based on another parameter, for example, at least one of the previous parameters A1.1, A1.2, A1.3 or A1.4.

[00233] In a possible example, the first power value can be obtained according to the following formula (7): PPRS(i)= min(PcmAX' PmAX,CBR,1' PCMAX CComb * Mn|CCH(i)\ Μ^φ ) min (PpRS,D(0,PPRS,SL (i») [dBm] Formula (7)

[00234] For parameters in formula (7), see the definitions in formula (6) and formula (2) above. Details are not described again.

[00235] Formula (7) above may also have other variations. For example, some other parameters may be added to or removed from formula (7), or some weights may be set for some parameters in formula (7). In one possible implementation, formula (7) may alternatively be transformed into the following formula: Petition 870250107457, dated 11 / 24 / 2025, page 76 / 138 70 / 124PPRS(i)— min ÇPcmAX'PMAX,CBR,1> PCMAX CComb * Mn|CCH(i)\ ' mbPprs,d(0,Pprs,sl (i)) [dBm].

[00236] For the meanings of the parameters in the formula, see the related descriptions of formula (7). Details are not described again.

[00237] In addition to the previous example, the first terminal device may alternatively determine the first power value in another way. For example, the first terminal device may determine a lower value in the third power value, in the fifth power value, and in the sixth power value as the first power value. In this way, the first power value may be reduced as much as possible, thus reducing the power consumption of the terminal device. In another example, the first terminal device may determine a lower value in the third power value, in the fifth power value, in the sixth power value, and a specified value as the first power value, where the specified value is a lower value or a higher value in PCMAX and PMAX, CBR;1.

[00238] In this mode, the first power value is determined based on the third power value. Therefore, the first power value can be as low as possible, so that the second power value calculated based on the first power value can be as low as possible and not greater than the transmission power of the first terminal device. In this way, the first terminal device can determine a more suitable second power value.

[00239] In implementation A2, in this mode of this application, after the first terminal device determines the second power value, this value can be large. For example, the second power value is greater than the transmission power of the first terminal device based on a second CBR and a second transmission priority. The second transmission priority Petition 870250107457, dated 11 / 24 / 2025, page 77 / 138 71 / 124 is a PSCCH transmission priority, a reference signal transmission priority, or a transmission priority for a shared PSSCH physical side link channel. In this case, the first terminal device can update the second power value again and reduce the first power value to avoid, as far as possible, an excessively large second power value.

[00240] In the previous step 503, in a possible implementation, when the second power value is greater than the transmission power of the first terminal device based on the second CBR and the second transmission priority, the first terminal device uses a second value as an updated second power value and sends the PSCCH based on the updated second power value. The first terminal device updates the first power value based on the updated second power value and sends the reference signal based on the updated first power value.

[00241] In one possible implementation, the first terminal device determines the first updated power value based on the first parameter and the second updated power value. For a way to update the first power value, see the related content in the previous formula (5). Details are not described again.

[00242] In this way, it is possible to avoid an excessively high second power value and control the relationship between the first power value and the second power value. Thus, the transmission power of the reference signal at a resource is equal to or close to the transmission power of the PSCCH at a resource, allowing the other terminal device to select a more suitable resource when performing resource selection based on the PSCCH's RSRP, and the interference in the information transmission performed at the selected resource is Petition 870250107457, dated 11 / 24 / 2025, pp. 78 / 138 72 / 124 small.

[00243] Implementation A3: The first power value is determined based on a fourth power value.

[00244] In implementation A3, the first terminal device can determine the first power value based on the fourth power value.

[00245] The fourth power value is determined based on the transmission power of the first terminal device based on a first CBR and a first transmission priority, the amount of resources of the reference signal, the amount of resources of the PSCCH, and the comb value of the reference signal. For example, the fourth power value is the difference or quotient between the transmission power of the first terminal device based on the first CBR and the first transmission priority and the first value.

[00246] In a possible example, the fourth power value can be obtained according to the following formula (8): / Comb*MPSCCH(i)\ fourth power value=PMAX,CBR,i—---mprS(í)---)F°rmu^a(θ)

[00247] In formula (8), Pmax,cbr,i represents the transmission power of the first terminal device based on the first CBR and the first transmission priority, Comb represents the comb value of the reference signal, CC represents the amount of resources (e.g., the number of RBs of the PSCCH) of the PSCCH at the time of transmission i, and represents the amount of resources (e.g., the number of RBs of the reference signal) of the reference signal at the time of transmission i. For parameters in formula (8), see the related parameters in formulas (1) and (2) above. Details are not described again.

[00248] In addition to the solution for calculating the fourth power value shown in the previous formula (8), there may be other solutions for calculating the fourth power value. For example, Petition 870250107457, dated 11 / 24 / 2025, page 79 / 138 73 / 124 The fourth power value can be a sum or a product of the transmission power of the first terminal device based on the first CBR and the first transmission priority, plus a predefined value, to make the fourth power value lower than the transmission power of the first terminal device based on the first CBR and the first transmission priority, thus reducing the first power value and, further, the second power value. In this way, the possibility of the second power value being lower than the transmission power of the first terminal device based on a second CBR and a second transmission priority is increased.

[00249] When a unit in each formula changes, each formula in this mode of this request may also change. For example, when a unit in the previous formula (8) is not dBm, the previous formula (8) may alternatively be replaced by the following formula: fourth power value or the previous formula (8) can be replaced by: fourth power value = PMax.cBI!.i « In both formulas, the fourth power value represents the transmission power of the PSCCH at the time of transmission i, and Pcmax represents the transmission power of the reference signal at the time of transmission i. A difference between the formulas and formula (8) lies in the fact that the units of fourth power value and Pmax,cbr,i in the formulas are not dBm, but may be, for example, watts or milliwatts. For the meanings of other parameters in the formulas, see the descriptions of formula (8).

[00250] In a possible implementation, formula (8) can alternatively be replaced by one of the following formulas. The meanings of the related parameters are the same as in formula (8). Details are not described again: Petition 870250107457, dated 11 / 24 / 2025, pp. 80 / 138 74 / 124 fourth power value = Pmax,cbr,i - 10 / ^(Comb) 10lg(MPpSBCCH(Í)) + 10lg(MPpBs(Í))dBm]; fourth power value = Pmax,cbR;1- 10lg(Comb * MRBCCH(í)') + 10lg (M™s(í))[dBm]; fourth power value = Pmax,cbR;1— 10lg(Comb) — 10lg (MRBCCH(í) / M™s(Í))[dBm]; fourth power value = Pmax,cbR;1— 10lg(Comb / 'MpRS(i)) — 10lg (MRBCCH(i)')[dBm]; or MPRS(i) fourth power value = pmax,cbR,i + 10lg(CombRM^PsccH(i))[dBm]. RB

[00251] The first terminal device can also determine the first power value based on another parameter, for example, at least one of the previous parameters A1.1, A1.2, A1.3 or A1.4.

[00252] In a possible example, the first power value can be obtained according to the following formula (9): Comb * MrBCCH(í)\ mrRs(í) )'PPRS(í)=min (PCMAX'PMAX,CBR,1'PMAX,CBR,1 -10lgI ' min (Pprs,d(0,PPRS,SL (í))) [dBm] Formula (9)

[00253] For parameters in formula (9), see the definitions in formula (8) and formula (2) above. Details are not described again.

[00254] Formula (9) above may also have other variations. For example, some other parameters may be added to or removed from formula (9), or some weights may be set for some parameters. In a possible implementation, formula (9) may be transformed into the following formula: PPRS(Í)=min (PCMAX,PMAX,CBR,1,PMAX,CBR,1 in formula (9). In one, it can, alternatively, Co (CombMBf™®1g\ MRRs(i)PPRS,D(0 ,pprs,sl (í)) [dBm].

[00255] For the meanings of the parameters in the formula, Petition 870250107457, dated 11 / 24 / 2025, page 81 / 138 75 / 124 see related descriptions of formula (9). Details are not described again.

[00256] In addition to the previous example, the first terminal device may alternatively determine the first power value in another way. For example, the first terminal device may determine a lower value in the fourth power value, in the fifth power value, and in the sixth power value as the first power value. In this way, the first power value may be reduced to the maximum, thus reducing the power consumption of the terminal device. In another example, the first terminal device may determine a lower value in the fourth power value, in the fifth power value, in the sixth power value, and a specified value as the first power value, where the specified value is a lower value or a higher value in Pcmax and Pmax,cbr,i.

[00257] In this mode, the first power value is determined based on the fourth power value. Therefore, the first power value can be as low as possible, so that the second power value calculated based on the first power value can be as low as possible and not greater than the transmission power of the first terminal device based on the second CBR and the second transmission priority. In this way, the first terminal device can determine a more suitable second power value.

[00258] In implementation A3, in this embodiment of this application, after the first terminal device determines the second power value, this value may be large. For example, the second power value is greater than the transmission power of the first terminal device. In this case, the first terminal device may update the second power value and the first power value again, to prevent the first power value and the second power value from exceeding the maximum transmission power of the first terminal device. Petition 870250107457, dated 11 / 24 / 2025, page 82 / 138 76 / 124

[00259] In the previous step 503, in one possible implementation, when the second power value is greater than the transmission power of the first terminal device, the first terminal device uses a second value as an updated second power value and sends the PSCCH based on the updated second power value. The first terminal device updates the first power value based on the updated second power value and sends the reference signal based on the updated first power value.

[00260] In one possible implementation, the first terminal device determines the first updated power value based on the first parameter and the second updated power value. For a way to update the first power value, see the related content in the previous formula (5). Details are not described again.

[00261] In this way, it is possible to avoid an excessively high second power value and control the relationship between the first power value and the second power value. In this way, the transmission power of the reference signal in a resource is equal to or close to the transmission power of the PSCCH in a resource, allowing the other terminal device to select a more suitable resource when performing resource selection based on the PSCCH's RSRP, and the interference in the information transmission performed in the selected resource is small.

[00262] Implementation A4: The first power value is determined based on a third power value and a fourth power value.

[00263] For solutions related to the third power value and the fourth power value, see the related descriptions of the previous A2 and A3 implementations. Details are not described again.

[00264] The first terminal device can still determine the Petition 870250107457, dated 11 / 24 / 2025, page 83 / 138 77 / 124 first power value based on another parameter, for example, at least one of the previous parameters A1.1, A1.2, A1.3 or A1.4.

[00265] In a possible example, the first power value can be obtained according to the following formula (10): PpRsíj-) — min ÇPcmAX' PmAX,CBR,1> PCMAX / Comb * MrbCCH(í)\ l mRBS(í) )' / Comb * MRBCCH(i)PMAX.CBR.1-1<4 mRRS(|) ). min (PprsoÍO'PPRS.SL (i))) [dBm] Formula (10)

[00266] For the parameters of formula (10), see the definitions of formula (8) and formula (2) above. Details are not described again.

[00267] Formula (10) above may also have other variations. For example, some other parameters may be added to or removed from formula (10), or some weights may be set for some parameters in formula (10). In one possible implementation, formula (10) may alternatively be transformed into the following formula: PPRS(i)—min(PcmAX'PMAX'CBR'1. PCMAX— CComb * MRBCCH(i)lmrbs(:d ·)' „ cm / ComO»MníCCH(i)\ _r 1T_,PMAX'CBR'l—10^ (mprS(í) J 'PPRS'D(i)'PPRS.SL(i)') [dBm].

[00268] For the meanings of the parameters in the formula, see the related descriptions of formula (10). Details are not described again.

[00269] In addition to the previous example, the first terminal device can alternatively determine the first power value in another way. For example, the first terminal device can determine a lower value in the third power value, in the fourth power value, in the fifth power value, and in the sixth power value as the first power value. In this way, the first power value can be reduced as much as possible, thus reducing power consumption. Petition 870250107457, dated 11 / 24 / 2025, page 84 / 138 78 / 124 of the terminal device. In another example, the first terminal device may determine a smaller value in the third power value, in the fourth power value, in the fifth power value, in the sixth power value, and a value specified as the first power value, where the specified value is a smaller or larger value in Pcmax and Pmax,cbr,i.

[00270] In the A4 implementation, the first power value can be determined based on at least the third power value and the fourth power value. Therefore, the first power value can be as low as possible, so that the second power value calculated based on the first power value can be as low as possible and not greater than the transmission power of the first terminal device based on a second CBR and a second transmission priority, and not greater than the transmission power of the first terminal device. In this way, the first terminal device can determine a more suitable second power value.

[00271] Implementation B: The first terminal device determines the second power value and determines the first power value based on the first parameter and the second power value.

[00272] In this modality of this request, it can be an association relationship between the first power value and the second power value. For example, a result of a mathematical operation (e.g., a quotient, a difference, a sum, or a product) between the first power value and the second power value can be associated with the first parameter.

[00273] For example, the result of the mathematical operation (for example, the quotient, the difference, the sum or the product) between the first power value and the second power value can be associated with a third value.

[00274] The third value includes a ratio between the amount of resources of the reference signal and the comb value. Petition 870250107457, dated 11 / 24 / 2025, page 85 / 138 79 / 124 of the reference signal and the amount of PSCCH resources. For example, the third value is the quotient between the amount of resources of the reference signal and the comb value of the reference signal and the amount of resources of the PSCCH. Alternatively, the third value is a value associated with the quotient (the quotient is the quotient between the amount of resources of the reference signal and the comb value of the reference signal and the amount of resources of the PSCCH). For example, the third value is a result obtained by performing some mathematical operations on another parameter and on the quotient.

[00275] The third value may alternatively include a difference between the reference signal's resource quantity and the reference signal's comb value and the PSCCH's resource quantity. For example, the third value is the difference between the reference signal's resource quantity and the reference signal's comb value and the PSCCH's resource quantity. Alternatively, the third value is a value associated with the difference (the difference is the difference between the reference signal's resource quantity and the reference signal's comb value and the PSCCH's resource quantity). For example, the third value is a result obtained by performing some mathematical operations on another parameter and the difference.

[00276] For example, the result of the mathematical operation (e.g., the quotient or the difference) between the first power value and the second power value could be the third value. In another example, the result of the mathematical operation between the first power value and the second power value could be a result of a mathematical operation between a predefined value and the third value. The predefined value could be, for example, a predefined adjustment value, and the result of the mathematical operation between the predefined value and the third value could be, for example, a result of a mathematical operation such as Petition 870250107457, dated 11 / 24 / 2025, page 86 / 138 80 / 124 is a sum of, a product of, a difference between, or a quotient of the predefined value and the third value. In another example, an association relationship is established between the result of the mathematical operation between the first power value and the second power value and the third value according to some formulas. In another example, the result of the mathematical operation (e.g., the sum or product) between the first power value and the second power value can be an associated value of a reciprocal of the third value.

[00277] In implementation B, in one possible implementation, the first terminal device determines the second power value, and the first terminal device determines the first power value based on the second power value and the third value.

[00278] In one possible implementation, the first power value is a sum or a product of the second power value and the third value.

[00279] 0 The following describes, according to formula (11), an example of a way to calculate the power value of the reference signal: mPRS / PpRstO = PpscchÍO + [dBm] Formula (11) cu ffLu*iyiRBxJ'J

[00280] In formula (11), Ppss represents a transmission power of the reference signal at the time of sending i, Ppsccpi C3) represents a transmission power of the PSCCH at the time of sending i, Comb represents the comb value of the reference signal, represents the amount of resources (e.g., the number of RBs of the PSCCH) of the PSCCH at the time of sending i, and represents the amount of resources (e.g., the number of RBs of the reference signal) of the reference signal at the time of sending i.

[00281] When one unit in each formula changes, each formula in this mode of this request can also change. For example, Petition 870250107457, dated 11 / 24 / 2025, page 87 / 138 81 / 124 when a unit in the previous formula (11) is not dBm, the previous formula (11) may alternatively be replaced by the following formula: CO ,^H(ίP or _ ,,COmb*MnnCCH(ij, n PpRsCU = Ppscch(U / (---mprs(í)---)· In the formula, í™ W represents the transmission power of the PSCCH at the time of transmission i, and CO represents the transmission power of the reference signal at the time of transmission i. A difference between the formula and formula (11) lies in the fact that the units of CO and CO in the formula are not dBm and may be, for example, watts or milliwatts. For the meanings of other parameters in the formula, see the descriptions of formula (11).

[00282] In formula (11), an example where the quantity of resources is the quantity of RBs is used for description. Therefore, the subscripts of ^sbCC1íCO and ^Íb^CO in formula (11) are each one RB. If the quantity of resources needs to be calculated in another unit in some implementations, the subscript of RB in the formula provided in this embodiment of this application may alternatively be substituted.

[00283] With reference to the previous formula (11), it can be learned that if the second power value is CO, the first power value can be equivalent to Ppss CO, and the third value can be understood as Corn6ίθ in formula (11), or the third value can be understood as ^cmr-b <Mhh::i-íí·jna fórmula (11).

[00284] 0 The third value can alternatively be expressed as any of the following formulas. For the meanings of the related parameters, see the descriptions of the previous formula (11). Details are not described again: - 101g (Comb) - 101g(M™(i)) + 10Z^(M^(i)); Petition 870250107457, dated 11 / 24 / 2025, pp. 88 / 138 82 / 124 — 10lg (Comb * M^iCCH(i)) + 10lg(MPBs(i)) ; - 10lg(Comb)- ΙΟ^Μ^^ / Μ^ΐ)); - 10lg (Comb / M£Rs(i))- 10lg(M^iCCH(i) ); Comb*M^iCCH(i) . M^fs(i) ; iolg(· Comb*MRBCCH'bb' (i) (i) ); 10lg (Comb) + 10lg(MPBCCH(i) — 10lg(Mpps(i)); 10lg (Comb * M'^H(n 10lg(M™s(i)); 10lg (Comb) + 10lg(MPBCCH(i) / Mpps(i)); 10lg (Comb / M™s(i))+ 10lg(MPBCCH(i)).

[00285] The first terminal device can calculate the first power value according to the previous formula (11). Alternatively, there may be another association relationship between the first power value, the second power value, and the third value (for example, the three parameters may alternatively form another mathematical operation formula in combination with another parameter). For example, the previous formula (11) may alternatively be replaced by one of the following formulas. The meanings of the related parameters are the same as in formula (11). Details are not described again: Ppps(i) = PpscchÍO - 10lg (Comb) - 10lg (MfêCCH(i)) + 10lg(MPBs(0)[dBm] ; Ppps(i) = Ppscch(Í) — 10lg (Comb * MPBCCH(i) + 10lg (MPpPS(i)-)[dBm] ; Ppps(i) = Ppscch(Í) — 10lg (Comb) - 10lg (MPBCCH(i) / Mpps(i))[dBm] ; Ppps(i)= PpsccH(i)- 10lg (Comb / MRBs(i)) — 10lg (MRBCH(i))[dBm]; or co c co with sOomb*Mo£CCH(fPPPRs(i)=PPsCCH(i) - 10lg(Mggs(i))[dBm].

[00286] In implementation B, the first terminal device determines the second power value in several ways. Implementation B1, implementation B2, implementation B3, and implementation B4 are used as examples for description below. Petition 870250107457, dated 11 / 24 / 2025, pp. 89 / 138 83 / 124

[00287] Implementation B1: The second power value is determined based on at least one of the following parameters: a transmission power of the first terminal device; a transmission power of the first terminal device based on a second CBR and a second transmission priority; a ninth power value; or a tenth power value.

[00288] In a possible example, the second power value can be obtained according to the following formula (12): PPSCCH(-)=mn (PCMAX,PMAX,CBR,2,mn (PPSCCH,D(-),PPSCCH,SL(-))) [dBm]Formula (12)

[00289] In formula (12), PPSCCH(i) represents the transmission power of the PSCCH at the time of transmission i (PPSCCH(i) can be considered as the second power value), PCmax represents the transmission power of the first terminal device, Pmax,Cbr,2 represents the transmission power of the first terminal device based on the second CBR and the second transmission priority, PPSCCH,D(i) represents the ninth power value and PPSCCH,SL(i) represents the tenth power value.

[00290] Formula (12) above may also have other variations. For example, some other parameters may be added to or removed from formula (12), or some weights may be defined for some parameters in formula (12). In one possible implementation, formula (12) may alternatively be transformed into the following formula: PPSCCH(i)=min(PCMAX,PMAX,CBR,2, PPSCCH,D(i), PPSCCH,SL(i)) [dBm].For the meanings of the parameters in the formula, see the related descriptions of formula (12). Details are not described again.

[00291] In addition to the previous example, the first terminal device may alternatively determine the second power value in another way. For example, the first terminal device may determine a smaller value for the ninth power value and the tenth power value as the second power value. In this way, Petition 870250107457, dated 11 / 24 / 2025, pp. 90 / 138 84 / 124 the second power value can be reduced as much as possible, thus reducing the power consumption of the terminal device. In another example, the first terminal device can determine a lower value in the ninth power value, the tenth power value, and a specified value as the second power value, where the specified value is a lower or higher value in Pcmaxe?max,cbr,2. For example, the first terminal device is far from a network device, but the first terminal device is close to a second terminal device. Therefore, a downlink path loss can be large, the ninth power value can be large, a sidelink path loss can be small, and the tenth power value can be small.If the higher value in Pcmaxe?max,cbr,2 is selected as the specified value, for example, if the specified value is Pcmax / ° the first terminal device can still determine the second power value based on Pcmax. For example, the tenth power value can be selected as the second power value. In this way, communication between the terminal devices (between the first and second terminal devices) can be guaranteed to the maximum.

[00292] 0 The following describes in more detail the parameters in formula (12) using a parameter B1.1, a parameter B1.2, a parameter B1.3 and a parameter B1.4. Parameter Bl.l: ^cmax

[00293] In this application, Pcmax can be understood as the transmission power of the first terminal device. For the content of parameter Bl.l, refer to the related content of parameter Al.1 above. Details are not described again. Parameter BI.2: Pmax.cbr.2 [ 0 02 94 ] Pmax.cbr.2 includes the transmission power of the first terminal device based on the second CBR and the second priority. Petition 870250107457, dated 11 / 24 / 2025, pp. 91 / 138 85 / 124 transmission.

[00295] In this modality of this request, the second transmission priority may be a PSCCH transmission priority, a reference signal transmission priority, or a transmission priority of a shared PSSCH physical side link channel.

[00296] The second CBR can be understood as a CBR of a feature set corresponding to the PSCCH. In this way, the first terminal device can determine the second power value based on the transmission power of the first terminal device, based on the second CBR and the second transmission priority, so that the second power value can better correspond to the actual transmission power of the first terminal device. The second CBR in this embodiment of this application can alternatively be a CBR of a feature set corresponding to the reference signal, or a CBR of a feature set corresponding to the PSSCH. The second CBR may be the same as or different from the previous first CBR.

[00297] For example, Pmax.cbr.2 can be a maximum transmission power of the first terminal device based on the second CBR and the second transmission priority. Pmax.cbr.2 can be indicated by a parameter (the parameter can have a plurality of names, for example, the parameter can be named sl-MaxTxPower-RS) provided by the network device. Pmax.cbr.2 can be transmitted in an RRC message or in a Side Link Resource Pool (SLresource Pool) message. In some cases, the network device may not configure Pmax.cbr.2 for the first terminal device, and the first terminal device may not consider Pmax.cbr.2 the second power value when determining the second power value, or the first terminal device may consider Pmax.cbr.2 and ^c.max to be equal. Petition 870250107457, dated 11 / 24 / 2025, pp. 92 / 138 86 / 124 Parameter Bl.3: Ninth power value

[00298] 0 The ninth power value is associated with at least one initial power control value of the PSCCH based on the downlink path loss of the first terminal device, the amount of PSCCH resources, a downlink path loss adjustment coefficient, or a downlink path loss value.

[00299] In one possible implementation, the ninth power value is obtained according to the following formula: PpSCCH,D ¢0=PopscCH'13·' M£|CCH(i)} + ctD2PLDa[dBm] Formula (13)

[00300] In formula (13), Ppscch,dG) represents the ninth power value, PoPSCch'D represents the initial power control value of the PSCCH based on the downlink path loss of the first terminal device, Hs represents a predefined value (which may be a pre-configured value), Mr|cch(í) represents the amount (e.g., the number of PSCCH RBs) of resources occupied by the PSCCH at the time of transmission, i,aDz represents the downlink path loss adjustment coefficient, and PLD2 represents the downlink path loss value.

[00301] In formula (13), POpscCH,D can be a preconfigured value, for example, it can be configured using a dl-P0-RS parameter in an RRC message (for example, an SL-ResourcePool message). In another example, in formula (13), aD2 can be a preconfigured value, for example, it can be configured using a dl-Alpha-RS parameter in an RRC message (for example, an SL-ResourcePool message). SeaD2 is not configured, aDz can be considered as 1.

[00302] The first terminal device can estimate the downlink path loss based on a link signal. Petition 870250107457, dated 11 / 24 / 2025, pp. 93 / 138 87 / 124 downlink. For example, in formula (13), pLDz = that is, the first terminal device can estimate the downlink path loss value using a reference signal whose reference signal feature index is . Specifically, the downlink path loss value can be obtained by subtracting an RSRP obtained by the first terminal device measuring the reference signal whose reference signal index is from a reference signal transmission power, and the transmission power can be obtained by the first terminal device from the network device. [ 00303]When the network device does not configure some parameters in formula (13), the first terminal device may not consider the ninth power value in a process of determining the second power value. Alternatively, the ninth power value can be represented using a formula: Ppscch,d(i) =min(PcMAx>pmax,cbr,2) [dBm] . For the meanings of the parameters in the formula, see the content of the previous formula (12). Details are not described again.

[00304] In this embodiment of this request, the ninth power value may alternatively be determined in another way. For example, the ninth power value is the sum of PoPSCch'D and the downlink path loss value in formula (13). In another example, the ninth power value is determined based on PoPSCch'De and the amount of resources occupied by the PSCCH at the time of transmission i in formula (13). The previous formula (13) is just one possible example. Parameter BI.4: Tenth power value

[00305] The tenth power value is associated with at least one initial power control value of the PSCCH based on the side link path loss of the first terminal device, the amount of PSCCH resources, and an adjustment coefficient. Petition 870250107457, dated 11 / 24 / 2025, pp. 94 / 138 88 / 124 of lateral link path loss or in a lateral link path loss value.

[00306] In one possible implementation, the tenth power value is obtained according to the following formula: PpSCCH,5L ¢0=Popscch'Sl+ ' M£bCCH(1)) +aSL2 ' ^SL2 [dBm] Formula (14)

[00307] In formula (14), PPScch,sl(í) represents the tenth power value, Popscch>sl represents the initial power control value of the PSCCH based on the side link path loss of the first terminal device, Pí represents a predefined value (which may be a pre-configured value), Mr|cch(í) represents the amount (e.g., the number of PSCCH RBs) of resources occupied by the PSCCH at the time of transmission, i,a&L2 represents the side link path loss adjustment coefficient, and PLSL2 represents the side link path loss value.

[00308] In formula (14), POpscCH,SL can be a preconfigured value, for example, that can be configured using an sl-P0-RS parameter in an RRC message (for example, an SL-Powercontrol message). In another example, in formula (14), a&L2 can be a preconfigured value, for example, that can be configured using an sl-Alpha-RS parameter in an RRC message (for example, an SL-Powercontrol message). If not configured, aSL2 can be considered as 1.

[00309] In one possible implementation, the transmission of the reference signal can be performed between the first terminal device and the second terminal device, and the first terminal device can determine the side link path loss value based on the receive power information (e.g., an RSRP) and the transmit power information of the reference signal. In another possible implementation, the value Petition 870250107457, dated 11 / 24 / 2025, pp. 95 / 138 The 89 / 124 side link path loss value can be configured by the network device, or the downlink path loss value is used as the side link path loss value.

[00310] The parameters in formula (14) can be configured by the network device, for example, using an RRC message. When the network device does not configure some parameters in formula (14), the first terminal device may not consider the tenth power value in a process of determining the second power value. Alternatively, the tenth power value can be represented using a formula: PpScch,SL(i) = min(PCMAX,PMAX,CBR,2)[aBm]. For the meanings of the parameters in the formula, see the contents of formula (12) and formula (14) above. Details are not described again.

[00311] In this embodiment of this request, the tenth power value may alternatively be determined in another way. For example, the tenth power value is the sum of PoPscch'SLe of the path loss value of the side link in formula (14). For another example, the tenth power value is determined based on POpscch,SLe of the amount of resources occupied by PSCCH on the occasion of transmission i in formula (14). The previous formula (14) is just one possible example.

[00312] In this modality of this application, after the first terminal device determines the first power value, this value may be large. For example, the first power value is greater than the transmission power of the first terminal device. In another example, the first power value is greater than the transmission power of the first terminal device based on the first CBR and a first transmission priority. In this case, the first terminal device may update the first power value and the second power value again, to prevent the second power value and the first power value from exceeding the transmission power. Petition 870250107457, dated 11 / 24 / 2025, pp. 96 / 138 90 / 124 maximum of the first terminal device.

[00313] In the previous step 503, in one possible implementation, when the first power value is greater than a fourth value, the first terminal device uses the fourth value as an updated first power value and sends the PSCCH based on the updated first power value. The first terminal device updates the second power value based on the updated first power value and sends the reference signal based on an updated second power value.

[00314] The fourth value may be a lower value in the transmission power of the first terminal device and in the transmission power of the first terminal device based on the first CBR and the first transmission priority. Alternatively, the fourth value may be a higher value in the transmission power of the first terminal device and in the transmission power of the first terminal device based on the first CBR and the first transmission priority.

[00315] In one possible implementation, the first terminal device determines the second updated power value based on the first parameter and the first updated power value.

[00316] C The following describes, according to formula (15), an example of how to calculate the updated power value of PSCCH. In formula (15), ^pscch (0 can be considered the second updated power value and Pprs CD can be considered the first updated power value: mPRS / -x PpscchÍO = PpRstO - pscch) [dBm] Formula (15) cu ffLu*iyiRBxJ'J

[00317] In formula (15), Ppsccn (C represents the transmission power of the PSCCH at the time of transmission i, Ppss (0 represents the transmission power of the reference signal at the time of transmission i, Comb represents the comb value of the reference signal,represent-|-a the amount of resources (for example, the Petition 870250107457, dated 11 / 24 / 2025, pp. 97 / 138 91 / 124 (number of RBs of the PSCCH) of the PSCCH at the time of transmission i, and represents the number of resources (e.g., the number of RBs of the reference signal) of the reference signal at the time of transmission i.

[00318] When a unit in each formula changes, each formula in this mode of this request may also change. For example, when a unit in the previous formula (15) is not dBm, the previous formula (15) may alternatively be replaced 4—ΊPpRCCH CO= PPRS CO / Ç&*y£SÍXH(É)) by the following formula: lotiíí.mjjf or the previous formula (15) can be replaced by the following formula: PpSCCH CO ~PPRS \l) {. 'T,T4= - iÁ'RB '•v . In both formulas, PpsccH CO represents the transmission power of the PSCCH at transmission time i, eppks CO represents the transmission power of the reference signal at transmission time i. A difference between the formulas and formula (15) lies in the fact that the units of PpsccH CO eppks CO in the formulas are not dBm, but may be, for example, watts or milliwatts. For the meanings of other parameters in the formulas, see the descriptions of formula (15).

[00319] In a possible implementation, formula (15) may alternatively be replaced by one of the following formulas. The meanings of the related parameters are the same as in formula (15). Details are not described again: PpSCCH(0 = PPRS(0 + lOZ^(Comb) + 10Z^(M™(í)) - 10lg(MpRRBs(i))[dBm] ; PpscchÍO = PprsÍO + WlgÇComb * - 101g (M™s(í))[dBm]; PpSCCH(í) = PPRS(0 + 10lg(Comb) + 101g (MpsBCCH(i) / M™s(i»[dBm]; PpsccHÍ.0 = PpRsí.0 + lMg(Comb / MpRs(iy) + 101g (MpsBCCH(Z))[dBm]; or PpscchW = PpusW + 10ía(Mjm / (Í)W)[dBm].

[00320] In this way, it is possible to avoid an excessively high initial power value and to control the relationship between the second power value and the first power value. In this way Petition 870250107457, dated 11 / 24 / 2025, pp. 98 / 138 In this way, the transmission power of the reference signal on a resource is equal to or close to the transmission power of the PSCCH on a resource, allowing the other terminal device to select a more suitable resource when performing resource selection based on the PSCCH's RSRP, and minimizing interference in the information transmission performed on the selected resource.

[00321] Implementation B2: The second power value is determined based on a seventh power value.

[00322] In implementation B2, the first terminal device can determine the second power value based on the seventh power value.

[00323] The seventh power value is determined based on the transmission power of the first terminal device, the amount of resources of the reference signal, the amount of resources of the PSCCH and the comb value of the reference signal.

[00324] The seventh power value is a difference between, or a quotient of, the transmission power of the first terminal device and the third value.

[00325] In a possible example, the seventh power value can be obtained according to the following formula (16): seventh power value=PCMAX ~ ^lg (Comb^psccH(iJ Formula (16)

[00326] In formula (16), Pcmax represents the transmission power of the first terminal device, Comb represents the comb value of the reference signal, represents the amount of resources (e.g., the number of RBs of the PSCCH) of the PSCCH at the time of transmission ie represents the amount of resources (e.g., the number of RBs of the reference signal) of the reference signal at the time of transmission i. For parameters in formula (16), see the related parameters in formulas (11) and (12) above. Details are not described again.

[00327] In addition to the solution for calculating the seventh value of Petition 870250107457, dated 11 / 24 / 2025, pp. 99 / 138 93 / 124 power shown in the previous formula (16), may be other calculation solutions for the seventh power value. For example, the seventh power value may be a sum or a product of the transmission power of the first terminal device and a predefined value, to make the seventh power value less than the transmission power of the first terminal device, so as to reduce the second power value and further reduce the possibility of the first power value being greater than the transmission power of the first terminal device.

[00328] When a unit in each formula changes, each formula in this mode of this request may also change. For example, when a unit in the previous formula (16) is not dBm, the previous formula (16) may alternatively be replaced by the following formula: seventh value of _ p irM1 power CM AX / (.Cemb(iP or seventh power value = / Cowií>*MorCCÍÍ(0\π Ί Λ. Pcmax * (---mprs(i)--- / In the formula, the seventh power value represents the transmission power of the PSCCH at the time of transmission i, and Pcmax represents the transmission power of the reference signal at the time of transmission i. A difference between the formula and formula (16) lies in the fact that the units of the seventh power value and Pcmax in the formula are not dBm, but may be, for example, watts or milliwatts. For the meanings of other parameters in the formula, see the descriptions of formula (16).

[00329] In a possible implementation, formula (16) may alternatively be replaced by one of the following formulas. The meanings of the related parameters are the same as in formula (16). Details are not described again: seventh power value = Pcmax + 10Z.g(Comb) + 10lg(MBBCCH(0) — 10lg(M™s(Í))[dBm]; seventh power value = Pcmax + 10lg(Comb * m£Bcch(0) — Wlg (M™s(i))[dBm]; Petition 870250107457, dated 11 / 24 / 2025, pp. 100 / 138 94 / 124 seventh power value = PCmax + 10lg(Comb) + 10lg (MggCCH(Í) / M£fS(i))[dBm]; seventh power value = Pcmax + 10lgÇComb / M^gSÇi)) + 10lg (Mp|CCH(i))[dBm]; or seventh power value = Pcmax— 10lg(Comb*M^ —)[dBm]. mrb W

[00330] The first terminal device can also determine the second power value based on another parameter, for example, at least one of the previous parameters B1.1, B1.2, B1.3 or B1.4.

[00331] In a possible example, the second power value can be obtained according to the following formula (17): ppscch(í)=min(PcMAX,PMAX,CIR,2,pcmax 10lgí mPIs(í) Comb * MPSCCH(i) / Kd vy / min(ppscch,d(í),ppscch,sl(í))) [dBm] Formula (17)

[00332] For parameters in formula (17), see the definitions in formula (16) and formula (12) above. Details are not described again.

[00333] Formula (17) above may also have other variations. For example, some other parameters may be added to or removed from formula (17), or some weights may be set for some parameters in formula (17). In one possible implementation, formula (17) may alternatively be transformed into the following formula: ppscch(í)=min(PcMAX,PMAX,CIR,2,pcmax 10lg mPDsçí) Comb * Mps>CCH »)ppscch,d(í),ppscch,sl(í)) [dBm].

[00334] For the meanings of the parameters in the formula, see the related descriptions of formula (17). Details are not described again.

[00335] In addition to the previous example, the first terminal device can alternatively determine the second power value. Petition 870250107457, dated 11 / 24 / 2025, pp. 101 / 138 95 / 124 in another way. For example, the first terminal device can determine a lower value in the seventh power value, in the ninth power value, and in the tenth power value as the second power value. In this way, the second power value can be reduced to the maximum, thus reducing the power consumption of the terminal device. In another example, the first terminal device can determine a lower value in the seventh power value, in the ninth power value, in the tenth power value, and a specified value as the second power value, where the specified value is a lower value or a higher value in Pcmax and Pmax,cbr,2.

[00336] In this mode, the second power value is determined based on the seventh power value. Therefore, the second power value can be as low as possible, so that the first power value calculated based on the second power value can be as low as possible and not greater than the transmission power of the first terminal device. In this way, the first terminal device can determine a more suitable first power value.

[00337] In implementation B2, in this embodiment of this application, after the first terminal device determines the first power value, this value may be large. For example, the first power value is greater than the transmission power of the first terminal device based on a first CBR and a first transmission priority. In this case, the first terminal device may update the first power value and the second power value again, reducing the second power value and the first power value, so as to avoid, as far as possible, the problem of the first power value and the second power value being excessively large.

[00338] In the previous step 503, in a possible implementation, when the first power value is greater than the transmission power of the first terminal device based on the first Petition 870250107457, dated 11 / 24 / 2025, pp. 102 / 138 96 / 124 In CBR and first transmission priority, the first terminal device uses a fourth value as a first updated power value and sends the PSCCH based on the first updated power value. The first terminal device updates the second power value based on the first updated power value and sends the reference signal based on a second updated power value.

[00339] In one possible implementation, the first terminal device determines the second updated power value based on the first parameter and the first updated power value. For a way to update the second power value, see the related content in the previous formula (15). Details are not described again.

[00340] In this way, it is possible to avoid an excessively high initial power value and control the relationship between the second power value and the first power value. In this way, the transmission power of the reference signal in a resource is equal to or close to the transmission power of the PSCCH in a resource, allowing the other terminal device to select a more suitable resource when performing resource selection based on the PSCCH's RSRP, and the interference in the information transmission performed in the selected resource is minimal.

[00341] Implementation B3: The second power value is determined based on an eighth power value.

[00342] In implementation B3, the first terminal device can determine the second power value based on the eighth power value.

[00343] The eighth power value is determined based on the transmission power of the first terminal device based on a second CBR and a second transmission priority, the amount of reference signal resources, the amount of PSCCH resources, and the reference signal comb value.

[00344] The eighth power value is a difference between or Petition 870250107457, dated 11 / 24 / 2025, pp. 103 / 138 97 / 124 is a ratio of the transmission power of the first terminal device based on the second CBR, the second transmission priority, and the third value.

[00345] In a possible example, the eighth power value can be obtained according to the following formula (18): eighth power value = PMAx,cbr,2 “ W (Comb^psccH(i;J Formula (18)

[00346] In formula (18), Pmax.cbr.2 represents the transmission power of the first terminal device based on the second CBR and the second transmission priority, Comb represents the comb value of the reference signal, represents the amount of resources (e.g., the number of RBs of the PSCCH) of the PSCCH at the time of transmission ie represents the amount of resources (e.g., the number of RBs of the reference signal) of the reference signal at the time of transmission i. For parameters in formula (18), see the related parameters in formulas (11) and (12) above. Details are not described again.

[00347] In addition to the solution for calculating the eighth power value shown in the previous formula (18), there may be other calculation solutions for the eighth power value. For example, the eighth power value may be a sum or a product of the transmission power of the first terminal device based on the second CBR and the second transmission priority and a predefined value, to make the eighth power value less than the transmission power of the first terminal device based on the second CBR and the second transmission priority, so as to reduce the second power value and further reduce the possibility of the first power value being greater than the transmission power of the first terminal device based on a first CBR and a first transmission priority.

[00348] When one unit in each formula changes, each formula Petition 870250107457, dated 11 / 24 / 2025, pp. 104 / 138 98 / 124 in this mode of this request may also change. For example, when a unit in the previous formula (18) is not dBm, the previous formula (18) may alternatively be replaced by the following formula: eighth power value the previous formula (18) can be replaced by: λ r-> (Comb*MSèCCHÇi')\ eighth power value = PMAXjCBRj2* (-------I. In both formulas, eighth power value represents the transmission power of PSCCH at the time of transmission i, and Pcmax represents the transmission power of the reference signal at the time of transmission i. A difference between the formulas and formula (18) lies in the fact that the units of eighth power value and Pmax.cbr.2 in the formulas are not dBm, which can be, for example, watts or milliwatts.

[00349] In a possible implementation, formula (18) may alternatively be replaced by one of the following formulas. The meanings of the related parameters are the same as in formula (18). Details are not described again: eighth power value = Pmax,cbr,2 + 10Z.g(Comb) + 10lgÇM^CCH(i)) — 10lg(M™sW[dBm]; eighth power value = Pmax,cbr,2 + 10lg(Comb * M^CCHÇi)) — 101g (M™\Í))[dBm]; eighth power value = Pmax,cbr,2 + 10lg(Comb) + 101g (MrbCCH(í) / M™s(í»[dBm]; eighth power value = Pmax,cbr,2 + 10lg(Comb / MRBS(C)) + 101g ÇMbbCCH(.i))[dBm]; or Cnm h* mPSCCH / eighth power value = PMax,cbr,2 + 10^(---j[dBm].

[00350] The first terminal device can also determine the second power value based on another parameter, by Petition 870250107457, dated 11 / 24 / 2025, pp. 105 / 138 99 / 124 example, at least one of the previous parameters B1.1, B1.2, B1.3 or B1.4.

[00351] In a possible example, the second power value can be obtained according to the following formula (19): ppscch(0 — min ÇPcMAX'PMAX,CBR,2,PMAX,CBR,2 w„( MK-I:jS(comb * MpsBCCH(i) / min (ppscch,d(í), PPSCCH,SL(i)))[dBm] Formula (19)

[00352] For parameters in formula (19), see the definitions in formula (18) and formula (12) above. Details are not described again.

[00353] Formula (19) above may also have other variations. For example, some other parameters may be added to or removed from formula (19), or some weights may be set for some parameters in formula (19). In one possible implementation, formula (19) may alternatively be transformed into the following formula: PPSCCH(i)— min (PcmAX,PMAX,CBR,2,PMAX,CBR,2 mPIs(í) Comb * MPpCCH(i) / Kd vz / ppscch,d(i),PPSCCH,SL(i))[dBm].

[00354] For the meanings of the parameters in the formula, see the related descriptions of formula (19). Details are not described again.

[00355] In addition to the previous example, the first terminal device can alternatively determine the second power value in another way. For example, the first terminal device can determine a lower value in the eighth power value, the ninth power value, and the tenth power value as the second power value. In this way, the second power value can be reduced to a minimum, thus reducing the power consumption of the terminal device. In another example, the first terminal device can determine a lower value in the eighth power value, the ninth power value, and the tenth power value. Petition 870250107457, dated 11 / 24 / 2025, pp. 106 / 138 100 / 124 and a value specified as the second power value, where the specified value is a lower or higher value in PcMAX and PMAX, CBR, 2.

[00356] In this mode, the second power value is determined based on the eighth power value. Therefore, the second power value can be as low as possible, so that the first power value calculated based on the second power value can be as low as possible and not greater than the transmission power of the first terminal unit based on the second CBR and the second transmission priority. In this way, the first terminal unit can determine a more suitable first power value.

[00357] In implementation B3, in this embodiment of this application, after the first terminal device determines the first power value, this value may be large. For example, the first power value is greater than the transmission power of the first terminal device. In this case, the first terminal device may update the first power value and the second power value again, to prevent the second power value and the first power value from exceeding the maximum transmission power of the first terminal device.

[00358] In the previous step 503, in one possible implementation, when the first power value is greater than the transmission power of the first terminal device, the first terminal device uses a fourth value as an updated first power value and sends the PSCCH based on the updated first power value. The first terminal device updates the second power value based on the updated first power value and sends the reference signal based on the updated second power value.

[00359] In one possible implementation, the first terminal device determines the second updated power value based on the first parameter and the first power value. Petition 870250107457, dated 11 / 24 / 2025, pp. 107 / 138 101 / 124 updated. For a way to update the second power value, see related content in the previous formula (15). Details are not described again.

[00360] In this way, it is possible to avoid an excessively high initial power value and control the relationship between the second power value and the first power value. In this way, the transmission power of the reference signal in a resource is equal to or close to the transmission power of the PSCCH in a resource, allowing the other terminal device to select a more suitable resource when performing resource selection based on the PSCCH's RSRP, and the interference in the information transmission performed in the selected resource is minimal.

[00361] Implementation B4: The second power value is determined based on a seventh power value and an eighth power value.

[00362] For solutions related to the seventh power value and the eighth power value, see the related descriptions of the previous B2 and B3 implementations. Details are not described again.

[00363] The first terminal device can also determine the second power value based on another parameter, for example, at least one of the previous parameters B1.1, B1.2, B1.3 or B1.4.

[00364] In a possible example, the second power value can be obtained according to the following formula (20): PPSCCH(i)= min(PCMAX>PMAX,CBR,2> PCMAX -10^ ^ mRKs(í) Comb * mRSCCH(í) / Kd vy / PMAX,CBR,2 10^ ^ Mr|s(í) Comb * MRSCCHKd — I, min (ppscch,d (i),ppscch,sl(í))) [dBm](i)7 Formula (20)

[00365] For the parameters of formula (20), see the definitions in formulas (18) and (12) above. Details are not described again.

[00366] The previous formula (20) may also have other Petition 870250107457, dated 11 / 24 / 2025, pp. 108 / 138 102 / 124 variations. For example, some other parameters can be added to or removed from formula (20), or some weights can be defined for some parameters in formula (20). In one possible implementation, formula (20) can alternatively be transformed into the following formula: . _ . M MP|S(i) \ppscch(0 —min(pcmax,pmax,cbr,2,pcmax - 10^ 7 : 77Pscch7ã ), ' ' \Comb * MPbcch(í) / Pmax,cbr,210^ (j MrbS(Í) Comb*M^|CCH(i) ;) ' PPSCCH,D(Í)>PPSCCH,Sl(Í))[dBm].

[00367] For the meanings of the parameters in the formula, see the related descriptions of formula (20). Details are not described again.

[00368] In addition to the previous example, the first terminal device may alternatively determine the second power value in another way. For example, the first terminal device may determine a minimum value in the seventh power value, in the eighth power value, in the ninth power value, and in the tenth power value as the second power value. In this way, the second power value can be reduced as much as possible, thus reducing the power consumption of the terminal device. In another example, the first terminal device may determine a minimum value in the seventh power value, in the eighth power value, in the ninth power value, in the tenth power value, and a specified value as the second power value, where the specified value is a lower value or a higher value in Pcmax and PMAX,CBR,2.

[00369] In implementation B4, the second power value can be determined based on at least the seventh power value and the eighth power value. Therefore, the second power value can be as low as possible, so that the first power value calculated based on the second power value can be as low as possible and not greater than the transmission power of the first terminal device based on a second CBR and a second transmission priority, and not greater than the power of Petition 870250107457, dated 11 / 24 / 2025, pp. 109 / 138 103 / 124 transmission from the first terminal device. In this way, the first terminal device can determine a more suitable initial power value.

[00370] Based on the modalities shown in Figure 1, Figure 2, Figure 3A, Figure 3B, Figure 4A, Figure 4B, and Figure 5, and the preceding content, Figure 6 is a possible schematic flowchart of an example of a communication method according to an modality of this request. The modality shown in Figure 6 can be used in combination with the modality shown in Figure 5. Figure 6 can be considered a possible implementation solution for Figure 5. The method is presented using an example where an execution body is a first terminal device. The first terminal device can be the terminal device in Figure 1, Figure 2, Figure 3A, Figure 3B, Figure 4A, or Figure 4B, or a unit, a module, or a chip (system) in the terminal device.

[00371] As shown in Figure 6, the method includes the following steps.

[00372] Step 601: The first terminal device obtains a first parameter.

[00373] For related content for step 601, see the related content for step 501 above. Details are not described again.

[00374] Step 602: The first terminal device determines a first value.

[00375] The first value includes a quotient between the product of a PSCCH resource quantity and a reference signal comb value and a reference signal resource quantity. The first value may alternatively be expressed in another formula. For example, the first value may alternatively include a difference between the sum of the PSCCH resource quantity and the reference signal comb value and the reference signal resource quantity. Petition 870250107457, dated 11 / 24 / 2025, pp. 110 / 138 104 / 124 For content related to the first value, please refer to the previous descriptions. Details are not described again.

[00376] Step 603: When the first value is greater than 1, the first terminal device determines a second power value and determines a first power value based on the first parameter and the second power value.

[00377] Step 604: When the first value is less than 1, the first terminal device determines a first power value and determines a second power value based on the first parameter and the first power value.

[00378] Step 605: The first terminal device sends the reference signal based on the first power value and sends the PSCCH based on the second power value.

[00379] For related content from step 605, see the related content from step 503 above. Details are not described again.

[00380] Steps 602, 603, and 604 above can be considered as a possible implementation of step 502 above. In another possible implementation, when the first value is equal to 1, the first terminal device can first determine the first power value and then determine the second power value based on the first parameter and the first power value; or it can first determine the second power value and then determine the first power value based on the first parameter and the second power value.

[00381] When the first value is greater than 1, the first terminal device first determines the second power value and then determines the first power value based on the first parameter and the second power value. For example, the first power value can be determined according to the previous formula (11). Therefore, the first power value can be the smallest possible and not greater than the power of Petition 870250107457, dated 11 / 24 / 2025, pp. 111 / 138 105 / 124 transmission of the first terminal unit (and / or not greater than the transmission power of the first terminal unit based on a first CBR and a first transmission priority), so that a more suitable power value can be determined more quickly.

[00382] Furthermore, when the first value is less than 1, the first terminal device first determines the first power value and then the second power value based on the first parameter and the first power value. For example, the second power value can be determined according to formula (1) above. Therefore, the second power value can be as low as possible and not greater than the transmission power of the first terminal device (and / or not greater than a transmission power of the first terminal device based on a second CBR and a second transmission priority), so that a more suitable power value can be determined more quickly.

[00383] Based on the modalities shown in Figure 1, Figure 2, Figure 3A, Figure 3B, Figure 4A and Figure 4B, and the preceding content, Figure 7 is a possible schematic flowchart of examples of various communication methods according to one modality of this application. A difference from the modalities shown in Figure 5 and Figure 6 lies in the fact that, in Figure 5 and Figure 6, the first terminal device needs to determine the power value of the reference signal with reference to the power value of the PSCCH and the first parameter, while in the modality shown in Figure 7, the first terminal device can independently determine the power value of the reference signal. The modality shown in Figure 7 can be used independently, in combination with the subsequent Figure 8, or in combination with the modalities shown in Figure 5 and Figure 6.The method shown in Figure 7 can be considered a way to determine the power value of the reference signal. Petition 870250107457, dated 11 / 24 / 2025, pp. 112 / 138 106 / 124 by the first terminal device, according to an embodiment of this application. For example, the embodiment shown in Figure 7 can also be considered an implementation of the determination of the first power value by the first terminal device in step 502 above.

[00384] The method shown in Figure 7 is presented using an example where an execution body is the first terminal device. The first terminal device can be the terminal device in Figure 1, Figure 2, Figure 3A, Figure 3B, Figure 4A or Figure 4B, or a unit, a module or a chip (system) in the terminal device.

[00385] As shown in Figure 7, the method includes the following steps.

[00386] Step 701: The first terminal device determines the first power value.

[00387] The first power value is associated with a comb value of the reference signal.

[00388] Step 702: The first terminal device sends the reference signal based on the first power value.

[00389] Since the first power value is associated with the comb value of the reference signal, the average power value of the reference signal in an RE is closer to the average power value of the PSCCH in an RE, so the RSRP of the PSCCH can better reflect the RSRP of the reference signal. Therefore, when performing feature selection, another terminal device can perform feature selection based on the RSRP of the PSCCH, and the RSRP of the PSCCH measured by the other terminal device can reflect both the RSRP of the PSCCH and the RSRP of the reference signal. Therefore, the other terminal device can select a feature more accurately.

[00390] In step 701, in a possible implementation, the first power value is determined based on at least one of the following parameters: a transmission power of Petition 870250107457, dated 11 / 24 / 2025, pp. 113 / 138 107 / 124 first terminal device; a transmission power of the first terminal device based on a first CBR and a first transmission priority; an eleventh power value; or a twelfth power value.

[00391] In a possible example, the first power value can be obtained according to the following formula (21): Pprs(i)=min (Pcmax,PMAX,CBR,i,min (Pprs,d(i'),Pprs,sl(i')')>)[dBm]Formula (21)

[00392] In formula (21), PPRS(i) represents a transmission power of the reference signal on a transmission occasion i(PPRS(i) can be considered as the first power value), Pcmax represents the transmission power of the first terminal device, Pmax,cbr,1 represents the transmission power of the first terminal device based on the first CBR and the first transmission priority, Pprs,d(i) represents the eleventh power value and Pprs,sl(i) represents the twelfth power value.

[00393] Formula (21) above may also have other variations. For example, some other parameters may be added to or removed from formula (21), or some weights may be defined for some parameters in formula (21). In one possible implementation, formula (21) may alternatively be transformed into the following formula: Pprs(0 =min (Pcmax,Pmax,cbr,i,Pprs,d (i),Pprs,sl (i)) [dBm] . For the meanings of the parameters in the formula, see the related descriptions of formula (21). Details are not described again.

[00394] In addition to the previous example, the first terminal device can alternatively determine the first power value in another way. For example, the first terminal device can determine a lower value for the eleventh power value and the twelfth power value as the first power value. In this way, the first power value can be reduced as much as possible, thus reducing power consumption. Petition 870250107457, dated 11 / 24 / 2025, pp. 114 / 138 108 / 124 of the terminal device. In another example, the first terminal device can determine a smaller value in the eleventh power value, the twelfth power value, and a specified value as the first power value, where the specified value is a smaller or larger value in Pcmaxe pmax,cbr,i. For example, the first terminal device is far from a network device, but the first terminal device is close to a second terminal device. Therefore, a downlink path loss can be large and the eleventh power value can be large. If the larger value in PcmaxePmax,cbr,i is selected as the specified value, for example, if the specified value is Pcmax, the first terminal device can still determine the first power value based on Pcmax. In this way, communication between the terminal devices can be guaranteed as much as possible.

[00395] The following describes in more detail the parameters in formula (21) using a Cl.1 parameter, a Cl.2 parameter, a Cl.3 parameter and a Cl.4 parameter. Cl.l parameter:Pcmax

[00396] For the content of parameter Cl.l, see the related content of parameter Al.1 above. Details are not described again. Parameter Cl.2: PMAx,cbr,i

[00397] For the content of parameter Cl.2, see the related content of parameter Al. 2 above. Details are not described again. Parameter Cl.3: Eleventh power value

[00398] The eleventh power value is associated with downlink path loss, and the eleventh power value is determined based on the reference signal comb value.

[00399] For example, the eleventh power value is associated with at least one of the following: signal comb value Petition 870250107457, dated 11 / 24 / 2025, pp. 115 / 138 109 / 124 reference, an initial reference signal power control value based on the downlink path loss of the first terminal device, a reference signal resource quantity, a downlink path loss adjustment coefficient, or a downlink path loss value.

[00400] In one possible implementation, the eleventh power value is obtained according to the following formula: Pprs,dG) = Po,d+ 10logio(2M1· MpBS(i) / Comb) + aD1· PLD1[dBm] Formula (22)

[00401] In formula (22), PpRs,dG) represents the eleventh power value, Po,d represents the initial power control value of the reference signal based on the downlink path loss of the first terminal device, μ1 represents a predefined value (which may be a pre-configured value), mRRs(i) represents a quantity (e.g., a quantity of RBs of the reference signal) of resources occupied by the reference signal at the time of sending i, Comb represents the comb value of the reference signal, Od1 represents the downlink path loss adjustment coefficient, and PLD1 represents the downlink path loss value. For the related content of formula (22), see the related descriptions of the previous formula (3). Details are not described again.One difference lies in the fact that the Pprs,d(í) value determined in formula (22) is called the eleventh power, and the eleventh power can be calculated by considering the comb value. Parameter C1.4: Twelfth power value

[00402] The twelfth power value is associated with a loss in the side link path, and the twelfth power value is determined based on the comb value of the reference signal.

[00403] The twelfth power value is associated with at least one initial power control value of the signal. Petition 870250107457, dated 11 / 24 / 2025, pp. 116 / 138 110 / 124 reference based on the side link path loss of the first terminal device, the amount of reference signal resources, a side link path loss adjustment coefficient, or a side link path loss value.

[00404] In one possible implementation, the twelfth power value is obtained according to the following formula: Pprs,sl(í) = Po,sl+ 10 logio(2M2· MpRS(i) / Comb) + aSL1· PLsl1[dBm] Formula (23)

[00405] In formula (23), Pprs,slO) represents the twelfth power value, Po,sl represents the initial power control value of the reference signal based on the side link path loss of the first terminal device, μ2 represents a predefined value (which may be a pre-configured value), MpRS(i) represents the amount (e.g., the number of RBs of the reference signal) of resources occupied by the reference signal at the time of sending i, Comb represents the comb value of the reference signal, «sl1 represents the side link path loss adjustment coefficient and PLsl1 represents the side link path loss value. For the related content of formula (23), see the related descriptions of the previous formula (4). Details are not described again.One difference lies in the fact that the PPRSjSL(i) determined in formula (23) is called the twelfth power, and the twelfth power can be calculated by considering the comb value.

[00406] Based on the modalities shown in Figure 1, Figure 2, Figure 3A, Figure 3B, Figure 4A and Figure 4B, and the previous content, Figure 8 is a possible schematic flowchart of examples of various communication methods according to one modality of this application. A difference in relation to the modalities shown in Figure 5 and Figure 6 lies in the fact that, in Figure 5 and Figure 6, the first terminal device needs to determine the power value of the PSCCH with reference to the power value. Petition 870250107457, dated 11 / 24 / 2025, pp. 117 / 138 111 / 124 of the reference signal and to the first parameter, while in the mode shown in Figure 8, the first terminal device can independently determine the power value of the PSCCH. The mode shown in Figure 8 can be used in combination with the mode shown in Figure 7, or it can be used in combination with the modes shown in Figure 5 and Figure 6. The mode shown in Figure 8 can be considered a method for determining the power value of the PSCCH by the first terminal device, according to an embodiment of this application. For example, the mode shown in Figure 8 can also be considered an implementation of the determination of the second power value by the first terminal device in step 502 above.

[00407] The method shown in Figure 8 is presented using an example where an execution body is the first terminal device. The first terminal device can be the terminal device in Figure 1, Figure 2, Figure 3A, Figure 3B, Figure 4A or Figure 4B, or a unit, a module or a chip (system) in the terminal device.

[00408] As shown in Figure 8, the method includes the following steps.

[00409] Step 801: The first terminal device determines the second power value.

[00410] The second power value is associated with at least one of the following: transmission power of the first terminal device, downlink path loss of the first terminal device, or sidelink path loss of the first terminal device.

[00411] Step 802: The first terminal device sends the PSCCH based on the second power value.

[00412] For a solution in which the first terminal device determines the second power value in step 801, see the content described in the previous implementation B1. For example, the first terminal device can determine the second value of Petition 870250107457, dated 11 / 24 / 2025, pages 118 / 138 112 / 124 power according to formula (12) above. Alternatively, step 801 can be determined using the solution provided in implementation B2, implementation B3, or implementation B4 above. For related content, see the previous content. Details are not described again.

[00413] In this way, the first terminal device can separately determine the PSCCH power value. Furthermore, when the first terminal device does not send a PSSCH, in this solution, the PSCCH power value can be determined without relying on a PSSCH power control solution, to improve the flexibility of the solution.

[00414] In embodiments of this application, the fact that a network element (for example, a network element A) receives information from another network element (for example, a network element B) may mean that network element A receives the information directly from network element B, or it may mean that network element A receives the information from network element B through another network element (for example, a network element C). When network element A receives information from network element B through network element C, network element C may transmit the information transparently or process it, for example, adding it to different messages for transmission, or filtering the information and sending only the information obtained through filtering to network element A.Similarly, in various embodiments of this request, the fact that network element A sends information to network element B may mean that network element A sends the information directly to network element B, or it may mean that network element A sends the information to network element B through another network element (for example, network element C).

[00415] The terms system and network may be used interchangeably in forms of this application. At least one Petition 870250107457, dated 11 / 24 / 2025, pp. 119 / 138 113 / 124 means one or more, and a plurality of means two or more. The term and / or describes an association relationship between associated objects and represents the possibility of there being three relationships. For example, A and / or B can represent the following cases: Only A exists, A and B exist, and only B exists, where A and B can be singular or plural. The character / generally indicates an OR relationship between the associated objects. The expression at least one of the following items (pieces) or a similar expression means any combination of these items, including any combination of singular or plural items (pieces). For example, at least one item (piece) of a, b, or c can represent a, b, c, ab, ac, bc, or abc, where a, b, and c can be singular or plural.

[00416] Furthermore, unless otherwise specified, ordinal numbers such as first and second in modalities of this application are used to distinguish between a plurality of objects, rather than to limit a sequence, time, priorities, or importance of the plurality of objects.

[00417] The message names above are merely examples. With the evolution of communication technologies, the name of any message may be changed. However, regardless of how the message names are changed, as long as the meanings of the messages are the same as the messages in this application, the messages fall within the scope of protection of this application.

[00418] According to the previous method, Figure 9 is a diagram of the structure of a communication apparatus, according to an embodiment of this application. As shown in Figure 9, the communication apparatus can be a first terminal apparatus. The first terminal apparatus can be the terminal device of Figure 1, Figure 2, Figure 3A, Figure 3B, Figure 4A or Figure 4B, or a unit, a module or a chip (system) in the terminal device. The communication apparatus can be configured to Petition 870250107457, dated 11 / 24 / 2025, pp. 120 / 138 114 / 124 perform the method carried out by the first terminal device in the solution shown in any of Figures 5, 6, 7 or 8.

[00419] The communication device 1801 includes a processor 1802 and a transceiver 1803.

[00420] In addition, the communication device 1801 may include a memory 1804. In the figure, the memory 1804 is shown by dashed lines to further indicate that the memory is optional.

[00421] In addition, the communication device 1801 may include a bus system. The processor 1802, the memory 1804 and the transceiver 1803 may be connected using the bus system.

[00422] It should be understood that the 1802 processor can be a chip. For example, the 1802 processor can be a field programmable gate array (FPGA), an application-specific integrated circuit (ASIC), a system on a chip (SoC), a central processing unit (CPU), a network processor (NP), a digital signal processor (DSP), a microcontroller unit (MCU), a programmable logic device (PLD), or another integrated chip.

[00423] In an implementation process, the steps of the previous method can be implemented using a logic circuit integrated into the hardware in the 1802 processor or instructions in software. The steps of the method described with reference to the embodiments of this application can be completed directly by a hardware processor or can be completed using a combination of hardware in the 1802 processor and a software module. The software module can be located in a storage medium mature in the art, for example, a memory of Petition 870250107457, dated 11 / 24 / 2025, pages 121 / 138 115 / 124 random access, a flash memory, a read-only memory, a programmable read-only memory, an electrically erasable programmable memory, or a register. The storage medium is located in memory 1804, and processor 1802 reads the information from memory 1804 and completes the steps of the previous method in combination with the processor hardware.

[00424] It should be noted that the 1802 processor in this embodiment of this application may be an integrated circuit chip and possess signal processing capability. In an implementation process, the steps in the preceding method embodiments may be implemented using a hardware integrated logic circuit in the processor or instructions in software. The processor may be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component. The methods, steps, and logic block diagrams disclosed in the embodiments of this application may be implemented or executed. The general-purpose processor may be a microprocessor, or the processor may be any conventional or similar processor.The steps of the method disclosed with reference to the embodiments of this application can be completed directly by a hardware decoding processor, or they can be completed by a combination of hardware in the decoding processor and a software module. The software module can be located in a storage medium mature in the art, for example, a random access memory, a flash memory, a read-only memory, a programmable read-only memory, an electrically erasable programmable memory, or a register. The storage medium is located in memory, and the processor reads the information in memory and completes the steps of the previous method in combination with it. Petition 870250107457, dated 11 / 24 / 2025, pages 122 / 138 116 / 124 processor hardware.

[00425] It can be understood that memory 1804 in this embodiment of this application may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. For descriptions related to memory in this embodiment of this application, please refer to the preceding content. Details are not described again in this document.

[00426] When communication device 1801 is the first previous terminal device, processor 1802 is configured to: obtain a first parameter via transceiver 1803, wherein the first parameter includes a comb value of a reference signal; determine a first power value and determine a second power value based on the first parameter and the first power value; or determine a second power value and determine a first power value based on the first parameter and the second power value; and send the reference signal based on the first power value via transceiver 1803 and send a PSCCH physical side link control channel based on the second power value via a communication interface.

[00427] In one possible implementation, the 1802 processor is specifically configured to: determine the first power value; and determine the second power value based on the first power value and a first value.

[00428] In one possible implementation, the 1802 processor is specifically configured to determine the first power value based on a third power value and / or a fourth power value.

[00429] In one possible implementation, the 1802 processor is specifically configured to: determine the second power value; and determine the first power value based on the second power value and a third value.

[00430] In a possible implementation, the 1802 processor is Petition 870250107457, dated 11 / 24 / 2025, pp. 123 / 138 117 / 124 specifically configured to determine the second power value based on a seventh power value and / or an eighth power value.

[00431] When communication device 1801 is the first previous terminal device, in another possible implementation, processor 1802 is configured to: determine a first power value, where the first power value is associated with a comb value of a reference signal; and send the reference signal based on the first power value through transceiver 1803.

[00432] When communication device 1801 is the first previous terminal device, in another possible implementation, processor 1802 is configured to: determine a second power value, where the second power value is associated with at least one of the following: transmission power of the first terminal device, downlink path loss of the first terminal device, or sidelink path loss of the first terminal device; and send a PSCCH based on the second power value through transceiver 1803.

[00433] For concepts, explanations, detailed descriptions and other steps of the communication apparatus related to the technical solutions provided in the embodiments of this application, please refer to the descriptions of the content in the methods above or in other embodiments. Details are not described in this document.

[00434] According to the previous method, Figure 10 is a diagram of the structure of a communication apparatus, according to an embodiment of this application. As shown in Figure 10, the communication apparatus 1901 may include a communication interface 1903 and a processor 1902. In addition, the communication apparatus 1901 may include a memory 1904. In the figure, the memory 1904 is shown by dashed lines to indicate that the memory is optional. The communication interface 1903 is Petition 870250107457, dated 11 / 24 / 2025, pages 124 / 138 118 / 124 configured for input and / or output of information. Processor 1902 is configured to execute a computer program or instructions, to allow communication device 1901 to implement the method on a first-side terminal device in the solution related in any of Figures 5, 6, 7, or 8. In this embodiment of this application, communication interface 1903 can implement the solution implemented by transceiver 1803 in Figure 9, processor 1902 can implement the solution implemented by processor 1802 in Figure 9, and memory 1904 can implement the solution implemented by memory 1804 in Figure 9. Details are not described again in this document.

[00435] Based on the previous embodiments and the same concept, Figure 11 is a diagram of a communication apparatus according to an embodiment of this application. As shown in Figure 11, the communication apparatus 2001 can be a first terminal apparatus. The first terminal apparatus can be the terminal device in Figure 1, Figure 2, Figure 3A, Figure 3B, Figure 4A or Figure 4B, or a unit, a module or a chip (system) in the terminal device.

[00436] The communication device 2001 includes a processing unit 2002 and a communication unit 2003. In addition, the communication device 2001 may or may not include a storage unit 2004. In the figure, the storage unit 2004 is shown by dashed lines to further indicate that the memory is optional.

[00437] When communication device 2001 is the first previous terminal device, processing unit 2002 is configured to: obtain a first parameter, where the first parameter includes a comb value of a reference signal; determine a first power value and determine a second power value based on the first parameter and the first power value; or determine a second power value and Petition 870250107457, dated 11 / 24 / 2025, pages 125 / 138 119 / 124 determine a first power value based on the first parameter and the second power value; and send the reference signal based on the first power value through the communication unit 2003 and send a physical side link control channel PSCCH based on the second power value through a communication interface.

[00438] When communication device 2001 is the first previous terminal device, in another possible implementation, processing unit 2002 is configured to: determine a first power value, where the first power value is associated with a comb value of a reference signal; and send the reference signal based on the first power value through communication unit 2003.

[00439] When communication device 2001 is the first previous terminal device, in another possible implementation, processing unit 2002 is configured to: determine a second power value, where the second power value is associated with at least one of the following: transmission power of the first terminal device, downlink path loss of the first terminal device, or sidelink path loss of the first terminal device; and send a PSCCH based on the second power value through communication unit 2003.

[00440] In this embodiment of this application, communication unit 2003 is configured for input and / or output of information. Processing unit 2002 is configured to execute a computer program or instructions, to allow communication device 2001 to implement the method on a first-side terminal device in the solution related in any of Figures 5, 6, 7, or 8. In this embodiment of this application, communication unit 2003 can implement the solution implemented by transceiver 1803 in Figure 9, and processing unit 2002 can implement the Petition 870250107457, dated 11 / 24 / 2025, pages 126 / 138 The 120 / 124 solution implemented by processor 1802 in Figure 9, and storage unit 2004 can implement the solution implemented by memory 1804 in Figure 9. Details are not described again in this document.

[00441] According to the method provided in the embodiments of this application, this application further provides a computer program product. The computer program product includes computer program code or instructions. When the computer program code or instructions are run on a computer, the computer is enabled to perform the method in any of the embodiments shown in Figure 5, Figure 6, Figure 7, or Figure 8.

[00442] According to the method provided in the embodiments of this application, this application further provides a computer-readable storage medium. The computer-readable medium stores the program code. When the program code is executed on a computer, the computer is enabled to perform the method in any of the embodiments shown in Figure 5, Figure 6, Figure 7, or Figure 8.

[00443] According to the methods provided in the embodiments of this application, this application further provides a chip system. The chip system may include a processor. The processor is coupled to a memory and may be configured to perform the method in any of the embodiments shown in Figure 5, Figure 6, Figure 7, or Figure 8. Optionally, the chip system also includes memory. The memory is configured to store a computer program (which may also be called code or instructions). The processor is configured to invoke the computer program from memory and execute the computer program, to enable a device in which the chip system is installed to perform the method in any of the embodiments shown in Figure 5, Figure 6, Figure 7, or Figure 8. Petition 870250107457, dated 11 / 24 / 2025, pages 127 / 138 121 / 124

[00444] According to the method provided in the embodiments of this application, this application further provides a system that includes one or more first terminal devices described above. The system may also include a network device. The network device may configure a parameter for the first terminal device, for example, it may configure a parameter that needs to be used in a calculation process of a first power value or a second power value. In another possible implementation, the system may also include a terminal device configured to receive a PSCCH and / or a reference signal from the first terminal device.

[00445] All or some of the foregoing embodiments may be implemented by means of software, hardware, firmware, or any combination thereof. When software is used to implement embodiments, all or some of the embodiments may be implemented in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, all or some of the procedures or functions according to the embodiments of this application are generated. The computer may be a general-purpose computer, a dedicated computer, a computer network, or other programmable device. The computer instructions may be stored on a computer-readable storage medium or may be transmitted from one computer-readable storage medium to another computer-readable storage medium.For example, computer instructions can be transmitted from one site, computer, server, or data center to another site, computer, server, or data center in a wired manner (e.g., a coaxial cable, a fiber optic cable, or a digital subscriber line (DSL)) or wirelessly (e.g., infrared, radio, or microwave). The readable storage medium... Petition 870250107457, dated 11 / 24 / 2025, pages 128 / 138 122 / 124 A computer can be any usable medium accessible by the computer or a data storage device, for example, a server or a data center, integrating one or more usable media. The usable medium can be a magnetic medium (for example, a floppy disk, a hard disk drive, or a magnetic tape), a high-density optical medium (for example, a digital video disc, DVD), a semiconductor medium (for example, a solid-state drive, SSD), or similar.

[00446] It should be noted that part of this patent application document includes content protected by copyright. Except for copies of patent documents from the Patent Office or recorded content of patent documents, the copyright holder reserves the right of ownership.

[00447] The first terminal device in the previous device modes corresponds to the first terminal device in the method modes. A corresponding module or unit performs a corresponding step. For example, a communication unit (transceiver) performs a receive step or a send step in the method modes, and a step other than the send step and the receive step may be performed by a processing unit (processor). For a specific unit function, refer to a corresponding method mode. There may be one or more processors.

[00448] Terms such as component, module, and system used in this descriptive report represent an entity related to a computer, hardware, firmware, a combination of hardware and software, software, or running software. For example, a component may be, but is not limited to, a process running on a processor, the processor itself, an object, an executable file, an execution thread, a program, and / or a computer. As illustrated by the figures, both a computing device and an application that runs on the... Petition 870250107457, dated 11 / 24 / 2025, pages 129 / 138 123 / 124 Computing devices can be components. One or more components can reside in a process and / or in an execution thread, and the component can be located on one computer and / or distributed among two or more computers. Furthermore, these components can be executed from various computer-readable media that store various data structures. The components can communicate using a local and / or remote process and based, for example, on a signal with one or more data packets (e.g., data from two components interacting with another component in a local system, in a distributed system, and / or across a network like the Internet interacting with other systems using the signal).

[00449] A person skilled in the art may be aware that several illustrative logical blocks and steps described with reference to the embodiments disclosed in this descriptive report may be implemented by electronic hardware or by a combination of software and electronic hardware. Whether the functions are performed by hardware or software depends on the specific applications and design constraints of the technical solutions. A person skilled in the art may use different methods to implement the described functions for each particular application, but the implementation should not be considered to go beyond the scope of this application.

[00450] It may be clearly understood by a person skilled in the art that, for the sake of convenient and brief description, for the detailed working processes of the system, apparatus and unit described above, refer to the corresponding processes in the method modalities above. Details are not described again in this document.

[00451] In the various embodiments provided in this application, it should be understood that the system, apparatus and method disclosed may be implemented in another way. For example, the embodiments of apparatus described above are merely Petition 870250107457, dated 11 / 24 / 2025, pages 130 / 138 124 / 124 copies. For example, the division into units is merely a logical division of functions and may be another division in the actual implementation. For example, a plurality of units or components may be combined or integrated into another system, or some features may be skipped or not executed. Furthermore, the mutual couplings, direct couplings, or communication connections shown or discussed may be implemented through some interfaces. Indirect couplings or communication connections between devices or units may be implemented electrically, mechanically, or otherwise.

[00452] The units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, i.e., they may be located in a single location or may be distributed across a plurality of network units. Some or all of the units may be selected based on actual needs to achieve the objectives of the modal solutions.

[00453] Furthermore, the functional units in embodiments of this application may be integrated into a processing unit, or each of the units may exist physically in isolation, or two or more units may be integrated into a unit. When the functions are implemented in the form of a software functional unit and sold or used as a standalone product, the functions may be stored on a computer-readable storage medium.

[00454] The descriptions above are merely specific implementations of this application, but are not intended to limit the scope of protection of this application. Any variation or substitution easily understood by a person skilled in the art, within the technical scope disclosed in this application, will be covered by the scope of protection of this application. Therefore, the scope of protection of this application will be subject to the scope of protection of the claims. Petition 870250107457, dated 11 / 24 / 2025, pages 131 / 138

Claims

1 / 5 CLAIMS 1. A communication method, characterized in that the method is applicable to a first terminal device, and the method comprises: obtaining a first parameter, wherein the first parameter comprises a comb value of a reference signal; determining a first power value and determining a second power value based on the first parameter and the first power value; or determining a second power value and determining a first power value based on the first parameter and the second power value; and sending the reference signal based on the first power value and sending a PSCCH physical side link control channel based on the second power value.

2. Method, according to claim 1, characterized in that the first parameter further comprises at least one quantity of reference signal features or one quantity of PSCCH features.

3. A method according to claim 1 or 2, characterized in that the determination of the first power value and the determination of the second power value based on the first parameter and the first power value comprise: determining the first power value; and determining the second power value based on the first power value and a first value, wherein the first value comprises a quotient of a product of the amount of PSCCH resources and the comb value of the reference signal and the amount of resources of the reference signal, or the first value comprises a difference between a sum of the amount of PSCCH resources and the comb value of the reference signal and the amount of resources of the reference signal.

4. Method, according to claim 3, characterized in that the second power value is a sum or a product of the first power value and the first value.

5. A method, according to any one of claims 1 to 4, characterized in that the determination of the first power value comprises: determining the first power value based on a third power value and / or a fourth power value, wherein the third power value is determined based on the transmission power of the first terminal device, the amount of resources of the reference signal, the amount of resources of the PSCCH and the comb value of the reference signal; and the fourth power value is determined based on a transmission power of the first terminal device based on a first CBR channel occupancy rate and a first transmission priority, the amount of resources of the reference signal, the amount of resources of the PSCCH and the comb value of the reference signal, and the first transmission priority comprises a transmission priority of the reference signal.

6. Method according to claim 5, characterized in that the third power value is a difference between or a quotient of the transmission power of the first terminal device and the first value; and the first value comprises the quotient of the product of the amount of PSCCH resources and the comb value of the reference signal and the amount of resources of the reference signal, or the first value comprises the difference between the sum of the amount of PSCCH resources and the comb value of the reference signal and the amount of resources of the reference signal; and / or the fourth power value is a difference between or a quotient of the transmission power of the first terminal device based on the first CBR and the first transmission priority and the first value, and the first transmission priority comprises the transmission priority of the reference signal.

7. A method according to claim 1 or 2, characterized in that the determination of the second power value and the determination of the first power value based on the first parameter and the second power value comprise: determining the second power value; and determining the first power value based on the second power value and a third value, wherein the third value comprises a quotient of the reference signal resource quantity and the reference signal comb value and the PSCCH resource quantity, or the third value comprises a difference between the reference signal resource quantity and the reference signal comb value and the PSCCH resource quantity.

8. Method according to claim 7, characterized in that the first power value is a sum or a product of the second power value and the third value.

9. Method, according to any one of claims 1, 2, 7 or 8, characterized in that the determination of the second power value comprises: determining the second power value based on a seventh power value and / or an eighth power value, wherein the seventh power value is determined based on the transmission power of the first terminal device, the amount of resources of the reference signal, the amount of resources of the PSCCH and the comb value of the reference signal; and the eighth power value is determined based on the transmission power of the first terminal device based on a second CBR and a second transmission priority, the amount of resources of the reference signal, the amount of resources of the PSCCH and the comb value of the reference signal, and the second transmission priority is a priority of Petition 870250091080, of 06 / 10 / 2025, p.22 / 32 4 / 5 PSCCH transmission, a reference signal transmission priority or a transmission priority of a shared control channel of a PSSCH physical side link.

10. Method according to claim 9, characterized in that the seventh power value is a difference between or a quotient of the transmission power of the first terminal device and the third value; and the third value comprises the quotient of the quotient of the amount of resources of the reference signal and the comb value of the reference signal and the amount of resources of the PSCCH, or the third value comprises the difference between the difference between the amount of resources of the reference signal and the comb value of the reference signal and the amount of resources of the PSCCH; and / or the eighth power value is a difference between or a quotient of the transmission power of the first terminal device based on the second CBR and the second transmission priority and the third value.

11. Communication apparatus, comprising a processing module and a communication module, characterized in that the processing module is configured to perform the method, as defined in any one of claims 1 to 10, through the communication module.

12. Computer-readable storage medium, characterized in that the computer-readable storage medium stores computer-executable instructions and, when the computer-executable instructions are invoked by a computer, the method as defined in any one of claims 1 to 10 is performed.

13. Chip system, comprising a communication interface and a processor, characterized in that the communication interface is configured for: signaling or data input and / or output; and the processor is configured to execute a computer-executable program to enable a device in which the chip system is installed to perform the method as defined in any one of claims 1 to 10.

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