CN113271618B - Power control method and related device - Google Patents

Power control method and related device Download PDF

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CN113271618B
CN113271618B CN202010093967.4A CN202010093967A CN113271618B CN 113271618 B CN113271618 B CN 113271618B CN 202010093967 A CN202010093967 A CN 202010093967A CN 113271618 B CN113271618 B CN 113271618B
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terminal
slpl
configuration information
value
power control
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CN113271618A (en
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王南鑫
彭文杰
王君
戴明增
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/242—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account path loss

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

A power control method and a related device are disclosed, wherein the method comprises the following steps: a first terminal receives first configuration information sent by network equipment; wherein the first configuration information includes an identifier of the second terminal, and one or more events that trigger the first terminal to report a measurement result of the SL PL, the SL PL indicates a propagation path loss between the first terminal and the second terminal, and the one or more events include at least one of the following events: the first threshold value is less than or equal to SLPL, the second threshold value is greater than SLPL, the downlink path loss (DLPL) of the first terminal is less than or equal to SLPL, the SLPL is greater than DLPL, the SLPL is greater than the third threshold value and less than or equal to the fourth threshold value, the fifth threshold value is less than or equal to SLPL and the DLPL is greater than the sixth threshold value. The embodiment of the application can realize better SL power control.

Description

Power control method and related device
Technical Field
The present disclosure relates to the field of electronic technologies, and in particular, to a power control method and a related apparatus.
Background
With the development of wireless communication technology and the arrival of the fifth generation mobile communication technology (5 g), various new wireless service types, such as internet of things, internet of vehicles, etc., are emerging. Various terminal device to terminal device communications are widely used to provide mobile communication services for thousands of industries. The terminal equipment can directly communicate without the transfer of network side equipment. The network side device may provide configuration, scheduling, coordination, etc. of resources to facilitate direct communication between the terminal devices. Direct communication between terminal devices may be referred to as Sidelink (SL) communication, in which the transmission power of a transmitting end device is controlled by a base station. On one hand, the transmission power needs to be high enough to guarantee the SL communication quality; on the other hand, the transmit power needs to be as low as possible to save energy consumption of the transmitter terminal (Tx UE) and to avoid SL communication of the Tx UE interfering with the communication of the user interface.
Currently, the open loop power control configuration of the SL Tx UE in the connected state is based on the downlink power loss (DL PL), and the influence of the sidelink power loss (SL PL) is not considered.
Therefore, better SL power control is still needed for SL communication.
Disclosure of Invention
The embodiment of the application provides a power control method and a related device, which can realize better SL power control and solve the technical problem yet to be solved.
In a first aspect, the present application provides a power control method, including: a first terminal receives first configuration information sent by network equipment; wherein the first configuration information includes an identifier of the second terminal, and one or more events that trigger the first terminal to report a measurement result of the SL PL, the SL PL indicates a propagation path loss between the first terminal and the second terminal, and the one or more events include at least one of the following events: the SLPL is equal to or less than a first threshold value, the SLPL is greater than a second threshold value, the SLPL is equal to or less than a DLPL of the first terminal, the SLPL is greater than the DLPL, the SLPL is greater than a third threshold value and the DLPL is equal to or less than a fourth threshold value, the SLPL is equal to or less than a fifth threshold value and the DLPL is greater than the sixth threshold value.
By implementing the embodiment of the application, the first terminal determines that the reporting mode of the SL PL measurement result is event-triggered reporting through the configuration information sent by the network equipment, and learns the trigger event triggering the first terminal to report, so that the SLPL reporting can be realized, and the better SL power control can be realized.
In one implementation manner, after the first terminal receives the first configuration information sent by the network device, the method further includes: the first terminal determines a first SLPL according to a sidelink reference signal received power (SLRSRP) measured and reported by a second terminal; and if the first SLPL meets at least one of the one or more events, the first terminal sends the indication information of the first SLPL to the network equipment.
By implementing the embodiment of the application, the first terminal can determine the measurement value of the SLPL according to the SLRSRP measured and reported by the second terminal, and send the indication information of the SLPL to the network equipment when at least one of the one or more events is met, so that the measurement and reporting of the SLPL are realized, and further, better power control is realized.
In an implementation manner, before the determining, by the first terminal, the first SL PL according to the first SL RSRP measured and reported by the second terminal, the method further includes: the first terminal sends second configuration information to the second terminal; the second configuration information includes a first measurement object of the SL measurement and a first event triggering the second terminal to report the SLRSRP measurement result, where the first event is that a difference between a first measurement value of the SL RSRP and a first reporting value of the SL RSRP exceeds a seventh threshold, and the first reporting value is a last reporting value of the SL RSRP before the second terminal acquires the first measurement value. In one implementation manner, after the first terminal sends the second configuration information to the second terminal, the method further includes: the first terminal receives a first reported value of a first event sent by the second terminal, wherein the first reported value is a latest SL RSRP measured by the second terminal based on a first measurement object when the first condition is met; the first condition is that the second terminal obtains a first measurement value of SL RSRP after receiving the first configuration information; or, the first condition is that the first time period ends; or the first condition is that the measured values acquired by the second terminal in the second time period are not in the first interval; or the first condition is that the difference values between the measurement value acquired by the second terminal in the third time period and the first reference value are all larger than an eighth threshold; the starting time of the first time period, the second time period and the third time period is equal to or later than the time when the second terminal receives the second configuration information.
By implementing the embodiment of the application, the second terminal sends the first reported value of the first event to the first terminal when the first condition is met, and the first reported value is the latest measured value of the SL RSRP when the second terminal meets the first condition, so that the technical problem that the first reported value of the first event cannot be triggered is solved.
In an implementation manner, before the determining, by the first terminal, the first SL PL according to the first SL RSRP measured and reported by the second terminal, the method further includes: the first terminal sends second configuration information to the second terminal; the second configuration information includes a first measurement object measured by the SL and a reporting mode in which the second terminal reports the SLRSRP measurement result, where the reporting mode is a periodic reporting mode.
In one implementation manner, after the first terminal sends the second configuration information to the second terminal, the method further includes: and the first terminal receives a second reporting value which is triggered and reported by the second terminal in the first reporting period, wherein the second reporting value is equal to the measurement value of the SL RSRP which is triggered and reported by the second terminal in the previous reporting period of the first reporting period.
By implementing the embodiment of the application, the second terminal may report the report value of the previous reporting period of the first reporting period in the first reporting period, so that under the condition that the second terminal does not measure the SLRSRP measurement value in the first reporting period, the measurement abnormality of the SL RSRP can be avoided, and thus the reporting abnormality of the SL RSRP is avoided.
In one implementation, the first measurement object indicates a first resource pool in a second carrier frequency, the second carrier frequency includes one or more resource pools, and the one or more resource pools of the second carrier frequency include the first resource pool. By implementing the embodiment of the application, the second terminal can maintain the SL measurement based on the resource pool.
In one implementation, the first measurement object indicates a first resource pool in a first fractional Bandwidth (BWP) of a third carrier frequency, the third carrier frequency including one or more BWPs, the first BWP in the third carrier frequency including one or more resource pools, the one or more resource pools of the first BWP including the first resource pool. By implementing the embodiment of the application, the second terminal can maintain the SL measurement based on the resource pool.
In an implementation manner, the second configuration information further includes configuration information of one or more BWPs of a third carrier frequency, and configuration information of one or more resource pools in each BWP of the third carrier frequency. By implementing the embodiment of the application, the second terminal can acquire the specific configuration information of the resource pool.
In an implementation manner, before the first terminal receives a first reported value of a first event sent by a second terminal, the method further includes: the first terminal sends third configuration information to the second terminal, where the third configuration information includes configuration information of one or more BWPs of the third carrier and configuration information of one or more resource pools in each BWP of the third carrier. By implementing the embodiment of the application, the second terminal can acquire the specific configuration information of the resource pool.
In one implementation, the indication information of the first SL PL includes the first SL PL.
In one implementation, the indication information of the first SL PL includes a first identifier for characterizing a size relationship of the first SL PL with the DL PL of the first terminal.
In a second aspect, the present application provides a power control method, including: the network equipment sends first configuration information to a first terminal; wherein the first configuration information includes an identifier of the second terminal, and one or more events that trigger the first terminal to report a measurement result of SL PL, where the SL represents propagation path loss between the first terminal and the second terminal, and the one or more events include at least one of: the SLPL is equal to or less than a first threshold value, the SLPL is greater than a second threshold value, the SLPL is equal to or less than a DLPL of the first terminal, the SLPL is greater than the DLPL, the SLPL is greater than a third threshold value and the DLPL is equal to or less than a fourth threshold value, the SLPL is equal to or less than the fifth threshold value and the DLPL is greater than the sixth threshold value.
By implementing the embodiment of the application, the first terminal determines that the reporting mode of the SL PL measurement result is event-triggered reporting through the configuration information sent by the network equipment, and acquires the trigger event triggering the first terminal to report, so that the SLPL can be reported, and better SL power control can be realized.
In one implementation, the indication information of the first SL PL includes the first SL PL.
In one implementation, the indication information of the first SL PL includes a first identifier for characterizing a size relationship of the first SL PL with the DL PL of the first terminal.
In a third aspect, the present application provides a power control method, including: the second terminal receives second configuration information sent by the first terminal; the second configuration information includes a first measurement object of SL measurement and a reporting mode in which the second terminal reports the SLRSRP measurement result, where the reporting mode is periodic reporting or event-triggered reporting, and if the reporting mode is event-triggered reporting, the second configuration information further includes a first event that triggers the second terminal to report the SLRSRP measurement result, where the first event is that a difference between a first measurement value of the SL RSRP and a first reported value of the SL RSRP exceeds a seventh threshold, and the first reported value is a last reported value of the SL RSRP before the second terminal acquires the first measurement value. In one implementation, after the second terminal receives the second configuration information sent by the first terminal, the method further includes: the second terminal receives and sends a first reported value of a first event to the first terminal, wherein the first reported value is a latest SL RSRP measured by the second terminal based on the first measurement object when the first condition is met; the first condition is that the second terminal obtains a first measurement value of SL RSRP after receiving the first configuration information; or, the first condition is the end of the first time period; or the first condition is that the measured value acquired by the second terminal in the second time period is not in the first interval; or the first condition is that the difference values between the measurement value acquired by the second terminal in the third time period and the first reference value are all larger than an eighth threshold; the starting time of the first time period, the second time period and the third time period is equal to or later than the time when the second terminal receives the second configuration information.
By implementing the embodiment of the application, the second terminal sends the first reported value of the first event to the first terminal when the first condition is met, and the first reported value is the latest measured value of the SL RSRP when the second terminal meets the first condition, so that the technical problem that the first reported value of the first event cannot be triggered is solved.
In an implementation manner, if the reporting mode is periodic reporting, after the second terminal receives the second configuration information sent by the first terminal, the method further includes: and the second terminal sends a second reporting value to the first terminal in the first reporting period, wherein the second reporting value is equal to the measured value of the SL RSRP reported by the second terminal in the previous reporting period of the first reporting period, and the second terminal does not measure the measured value of the SLRSRP in the first reporting period.
In an implementation manner, if the reporting mode is periodic reporting, the second terminal does not send the measurement value of the SLRSRP to the first terminal in the first reporting period, and the second terminal does not measure the measurement value of the SLRSRP in the first reporting period.
By implementing the embodiment of the application, the second terminal can report the report value of the previous reporting period of the first reporting period in the first reporting period, so that under the condition that the second terminal does not measure the SLRSRP measurement value in the first reporting period, the measurement abnormality of the SL RSRP can be avoided, and the reporting abnormality of the SL RSRP can be avoided.
In one implementation, the first measurement object indicates a first resource pool in a second carrier frequency, the second carrier frequency includes one or more resource pools, and the one or more resource pools of the second carrier frequency includes the first resource pool. By implementing the embodiment of the application, the second terminal can maintain the SL measurement based on the resource pool.
In one implementation, the first measurement object indicates a first resource pool in a first BWP for a third carrier frequency, the third carrier frequency including one or more BWPs, the first BWP in the third carrier frequency including one or more resource pools, the one or more resource pools for the first BWP including the first resource pool. By implementing the embodiment of the application, the second terminal may maintain the SL measurement based on the resource pool.
In one implementation, the second configuration information further includes configuration information of one or more BWPs of the third carrier frequency, and configuration information of one or more resource pools in each BWP of the third carrier frequency. By implementing the embodiment of the application, the second terminal can acquire the specific configuration information of the resource pool.
In an implementation manner, before the second terminal receives the first report value of the first event from the first terminal, the method further includes: the second terminal receives third configuration information sent by the first terminal, where the third configuration information includes configuration information of one or more BWPs of a third carrier frequency and configuration information of one or more resource pools of each BWP of the one or more BWPs. By implementing the embodiment of the application, the second terminal can acquire the specific configuration information of the resource pool.
In a fourth aspect, an embodiment of the present application provides a terminal device, including: one or more functional modules, which are operable to perform the power control method according to any one of the possible implementations of the first aspect.
In a fifth aspect, an embodiment of the present application provides a network device, including: one or more functional modules, which are operable to perform the power control method according to any one of the possible implementations of the second aspect.
In a sixth aspect, an embodiment of the present application provides a terminal device, including: one or more functional modules, which are operable to perform the power control method in any one of the possible implementations of the third aspect.
In a seventh aspect, an embodiment of the present application provides a terminal device, configured to execute the power control method provided in the first aspect. The terminal device may include: memory, processor, transmitter, receiver, wherein: the transmitter and receiver are used to communicate with other communication devices, such as network devices or user equipment. The memory is used for storing implementation codes of the power control method provided by the first aspect, and the processor is used for executing the program codes stored in the memory, namely executing the power control method provided by the first aspect.
In an eighth aspect, an embodiment of the present application provides a network device, configured to execute the power control method provided in the second aspect. The network device may include: memory, processor, transmitter, receiver, wherein: the transmitter and receiver are used to communicate with other communication devices, such as network devices or user equipment. The memory is used for storing implementation codes of the power control method provided by the second aspect, and the processor is used for executing the program codes stored in the memory, namely executing the power control method provided by the second aspect.
In a ninth aspect, an embodiment of the present application provides a terminal device, configured to execute the power control method provided in the third aspect. The network device may include: memory, processor, transmitter, receiver, wherein: the transmitter and receiver are used to communicate with other communication devices, such as network devices or user equipment. The memory is used for storing implementation codes of the power control method provided by the third aspect, and the processor is used for executing the program codes stored in the memory, namely executing the power control method provided by the third aspect.
In a tenth aspect, an embodiment of the present application provides a communication system, including: one or more of the first terminal device, the network device, and the second terminal device. Wherein: the first terminal device may be the first terminal described in the first aspect, or may be the terminal device described in the fourth aspect; the network device may be the network device described in the second aspect, or may be the network device described in the fifth aspect; the second terminal device may be the second terminal described in the first aspect, or may be the terminal device described in the sixth aspect.
In an eleventh aspect, the present application provides a communication chip, which may include: a processor, and one or more interfaces coupled to the processor. The processor may be configured to call a program implementing the power control method provided in the first aspect from a memory, and execute instructions included in the program. The interface may be configured to output a data processing result of the processor.
In a twelfth aspect, the present application provides a communication chip, which may include: a processor, and one or more interfaces coupled to the processor. Wherein the processor is operable to call the implementation program of the power control method provided by the second aspect from the memory and execute the instructions contained in the program. The interface may be configured to output a data processing result of the processor.
In a thirteenth aspect, the present application provides a communication chip, which may include: a processor, and one or more interfaces coupled to the processor. Wherein the processor is configured to call a program implementing the power control method provided in the third aspect from the memory, and execute the instructions included in the program. The interface may be configured to output a data processing result of the processor.
In a fourteenth aspect, an embodiment of the present application provides a computer-readable storage medium, which has instructions stored thereon, and when the computer-readable storage medium is executed on a processor, the computer-readable storage medium causes the processor to execute the power control method described in the first aspect.
In a fifteenth aspect, embodiments of the present application provide a computer-readable storage medium having stored thereon instructions, which, when executed on a processor, cause the processor to execute the power control method described in the second aspect.
In a sixteenth aspect, the present application provides a computer-readable storage medium, which stores instructions that, when executed on a processor, cause the processor to execute the power control method described in the third aspect.
In a seventeenth aspect, embodiments of the present application provide a computer program product comprising instructions, which when run on a processor, cause the processor to perform the power control method described in the first aspect above.
In an eighteenth aspect, embodiments of the present application provide a computer program product containing instructions that, when run on a processor, cause the processor to perform the power control method described in the second aspect above.
In a nineteenth aspect, embodiments of the present application provide a computer program product comprising instructions that, when run on a processor, cause the processor to perform the power control method described in the third aspect above.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments or the background art of the present application, the drawings required to be used in the embodiments or the background art of the present application will be described below.
Fig. 1 is a schematic diagram of a communication system according to an embodiment of the present application;
fig. 2 is a schematic flowchart of a power control method according to an embodiment of the present disclosure;
fig. 3 is a schematic flowchart of another power control method according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of an SL measurement reporting model according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of a terminal device according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of a network device according to an embodiment of the present application.
Detailed Description
The technical solution in the embodiments of the present application will be described in detail and removed with reference to the accompanying drawings. In the description of the embodiments herein, "/" means "or" unless otherwise specified, for example, a/B may mean a or B; "and/or" in the text is only an association relationship describing an associated object, and means that three relationships may exist, for example, a and/or B may mean: three cases of a alone, a and B both, and B alone exist, and in addition, "a plurality" means two or more than two in the description of the embodiments of the present application.
In the following, the terms "first", "second" are used for descriptive purposes only and are not to be understood as implying or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature, and in the description of embodiments of the application, unless stated otherwise, "plurality" means two or more.
Fig. 1 illustrates a network architecture of a communication system 100 according to an embodiment of the present application. As shown in fig. 1, the communication system 100 may include: network device 101, terminal device 102. Optionally, the communication system 100 may include a plurality of network devices, and each network device may cover a plurality of terminal devices 102, which is not limited in this embodiment of the present invention. In addition, the communication system 100 may further include a Mobile Management Entity (MME), a packet data network gateway (P-GW), a serving gateway (S-GW), and the like, which is not specifically limited in this embodiment of the present invention. Wherein:
as shown in fig. 1, the terminal devices 102 may communicate directly with each other through SL, the transmitting end device of the SL may also be referred to as Tx UE, and the receiving end device of the SL may also be referred to as receiver terminal (Rx UE). One Tx UE may be in SL communication with multiple Rx UEs. SL communication may refer to a vehicle to vehicle (V2V), a vehicle to other device (V2X), or another device to device (D2D) communication mode, which is not limited in this respect.
In fig. 1, transmission resources for SL communication between Tx UE and Rx UE may be allocated by the network device. For example, the SL transmit power of the Tx UE may be controlled by the network device 101.
The technical scheme of the embodiment of the application can be applied to various communication systems, for example: a global system for mobile communications (GSM) system, a Code Division Multiple Access (CDMA) system, a Wideband Code Division Multiple Access (WCDMA) system, a Long Term Evolution (LTE) system, an LTE Frequency Division Duplex (FDD) system, a LTE Time Division Duplex (TDD), a Universal Mobile Telecommunications System (UMTS), and a future 5G communication system.
In this embodiment, the network device 101 may be a device for communicating with a terminal device, for example, the network device may be an evolved Node B (eNB or eNodeB) in an LTE system, and may also be a relay station, an access point, a vehicle-mounted device, a wearable device, a network-side device in a future 5G network, or a network-side device in a future evolved PLMN network.
In the communication system 100, the terminal device 102 and the terminal device 103 may be stationary or mobile. In some embodiments of the present application, the terminal device may be a mobile device, a mobile station (mobile station), a mobile unit (mobile unit), an M2M terminal, a wireless unit, a remote unit, a terminal agent, a user equipment, a mobile client, a handheld device with wireless communication capability, a vehicle-mounted device, a wearable device, a terminal device in a future 5G network, or a terminal device in a Public Land Mobile Network (PLMN) network for future evolution, and the like. The embodiments of the present application do not limit this.
In SL communication, the SL transmit power of the TxUE is controlled by the network device 101. On one hand, the transmission power needs to be high enough to guarantee the SL communication quality; on the other hand, transmit power needs to be as low as possible to save energy consumption of Tx UEs and to avoid SL communication of Tx UEs from interfering with the communication of Tx UE user interface.
Currently, the open-loop power control configuration of Tx UE in connected state only considers DL PL, and does not consider the influence of SL PL. For example, according to the open loop power control configuration of the Tx UE, the SL transmit power of the Tx UE may be expressed as follows.
Figure BDA0002384627070000071
Wherein, a physical SL shared channel (pscch) is used for carrying SL communication data from the terminal device, P PSSCH Representing the transmit power, P, of SL communication data from the Tx UE CMAX Indicating a preconfigured maximum transmit power, M PSSCH PSSCH resource bandwidth in terms of number of resource blocks, PL = PL c In which PL c Representing the downlink power loss, P O_PSSCH,3 And alpha PSSCH,3 Is a pre-provisioned power control parameter and is associated with a corresponding PSSCH resource configuration.
To enhance SL power control, the open-loop power control configuration of the Tx UE in the connected state in the embodiment of the present application may be determined based on the DL PL, or determined based on the SL PL, or determined based on both the DL PL and the SL PL. The power control models of the Tx UE determined in the above three cases may be different, that is, the calculation mode of the SL transmit power of the Tx UE and the required SL power control parameter may both be different; alternatively, the SL transmit power for the Tx UE is calculated in the same manner, but with different SL power control parameters.
In the embodiment of the present application, if the network device only knows the DL PL of the Tx UE, the SL power control model of the Tx UE may only consider the DL PL, and does not consider the SL PL; if the network device only knows the SL PL of the Tx UE, the SL power control model of the Tx UE may only consider the SL PL, not the DL PL; if the network device knows not only the DL PL of the Tx UE but also the SL PL of the Tx UE, the SL power control model of the Tx UE may consider only the SL PL, only the DL PL, or both the SL PL and the DL PL.
Therefore, the network device needs to acquire information about DL PL of the Tx UE and SL PL of the Tx UE, determine whether the open-loop power control configuration of the Tx UE is determined based on DL PL of the Tx UE, determined based on SL PL of the Tx UE, or determined based on both, and further determine to provide the power control model to the Tx UE. However, how to measure and report the SLPL to the network device to achieve better SL power control still remains a technical problem to be solved.
The key to how to measure and report the SLPL to the network device is how to design SL measurement and measurement reporting of Rx UE, and how to design Tx UE to report the relevant information of the SL PL to the network device after the Tx UE determines the SL PL according to the SL measurement result of the Rx UE.
First, the embodiment of the present application provides a power control method, which can implement Tx UE measurement and report relevant information of SL PL to a network device, so as to implement better SL power control.
Fig. 2 is a schematic flow chart of a power control method provided in an embodiment of the present application. As shown in fig. 2, the power control method provided in the embodiment of the present application includes, but is not limited to, steps S201 to S206. Possible implementations of embodiments of the method are described further below.
S201, a network device sends first configuration information to a first terminal, the first terminal receives the first configuration information sent by the network device, the first configuration information is used for controlling the first terminal to measure and report SLPL, and the SLPL represents the SLPL between the first terminal and a second terminal.
The first configuration information includes an identifier of the second terminal and one or more events triggering the first terminal to report the SL PL measurement result. The one or more events include at least one of: the SLPL of the first terminal is less than or equal to a first threshold; the SLPL of the first terminal is greater than a second threshold; the SLPL of the first terminal is less than or equal to the DLPL of the first terminal; the SLPL of the first terminal is larger than the DLPL of the first terminal; the SLPL of the first terminal is greater than a third threshold value and the DLPL of the first terminal is less than or equal to a fourth threshold value; the SLPL of the first terminal is less than or equal to a fifth threshold and the DLPL of the first terminal is greater than a sixth threshold.
In some embodiments of the present application, a network device sends a Radio Resource Control (RRC) reconfiguration message to a first terminal, where the RRC reconfiguration message includes first configuration information.
It can be understood that the first configuration information includes an identifier of the second terminal, and the first terminal determines that the configuration message is used for SL measurement between the first terminal and the second terminal according to the identifier of the second terminal in the first configuration information. The first terminal may be a Tx UE while the second terminal may be an Rx UE.
It should be noted that, in this embodiment of the application, functions of any two thresholds of the first threshold, the second threshold, the third threshold, the fourth threshold, the fifth threshold, and the sixth threshold are different, and values of any two thresholds may be the same or different.
S202, the first terminal determines a first SLPL according to a first SLRSRP measured and reported by the second terminal.
In some embodiments of the present application, the first SL PL is equal to a difference between a first demodulation reference signal (DMRS) transmission power of the first terminal and a first SL RSRP, which is a received power measured and reported by the second terminal based on the first DMRS.
It should be noted that, in the embodiment of the present application, rx UE measures SL RSRP based on DMRS, txUE carries DMRS in a service data packet sent to Rx UE, and Rx UE performs filtering measurement on the service data packet to obtain reception power of the DMRS in the service data packet, and reports the reception power to TxUE. Since the TxUE knows the transmission power of the DMRS in the traffic packet, it can calculate the PL of the SL, that is, the difference between the transmission power of the DMRS in the traffic packet and the reception power of the DMRS in the traffic packet.
S203, if the first SLPL satisfies at least one event of the one or more events, the first terminal sends the indication information of the first SLPL to the network device, and the network device receives the indication information of the first SLPL sent by the first terminal.
S204, the network equipment determines a first SL power control model according to the indication information of the first SLPL.
In some embodiments of the present application, if the network device knows not only the DL PL of the first terminal but also the first SL PLs of the first terminal and the second terminal; the SL power control model of the first terminal is determined based on both the first SL PL and the above DL PL. The path loss employed in the SL power control model of the first terminal may be the minimum of the first SL PL and the DL PL described above.
It can be understood that when the first SL PL is equal to or less than the DL PL of the first terminal, the path loss in the SL power control model of the first terminal adopts the first SL PL to ensure the SL communication quality of the first terminal using a lower transmission power. And when the DL PL of the first terminal is less than or equal to the first SL PL, the DL PL is adopted in the SL power control model of the first terminal so as to reduce the influence of SL communication of the first terminal on uplink communication of the first terminal.
In some embodiments of the present application, one Tx UE may perform SL communication with N rxues at the same time, where the N rxues may all report SLRSRP to the Tx UE, and the Tx UE may acquire SLPLs of N SLs, where N is a positive integer greater than zero. And the network equipment determines the SL power control model of the Tx UE according to the plurality of SLPLs measured and reported by the TxUE and the DL PLs of the Tx UE. The path loss adopted in the SL power control model of the Tx UE may be Min { DL PL, max { SL PL } }, where max { SL PL } represents the maximum value among all SLPLs reported by the TxUE measurement, and Min { DL PL, max { SL } } represents the minimum value among DL PL and the maximum values among all SLPLs. This way, the communication quality between the Tx UE and as many Rx UEs as possible can be ensured without interfering the uplink communication of the Tx UE.
It is understood that the indication information of the first SL PL may be used to instruct the network device to determine whether the first SL PL is larger than the DL PL of the first terminal, and the first SL power control model is determined by the network device according to a size relationship of the first SL PL and the DL PL of the first terminal.
In some embodiments of the application, the indication information of the first SL PL includes the first SL PL, or the indication information of the first SL PL includes a first SLRSRP and a first DMRS transmission power, a difference between the first SLRSRP and the first DMRS transmission power being equal to the first SL PL. It is understood that the network device determines whether the first SL PL is larger than the first terminal's DL PL by comparing the first SL PL and the first terminal's DL PL in size after obtaining the first SL PL based on the indication information of the first SL PL. The above-mentioned DL PL of the first terminal refers to a DL PL of the first terminal that the network device newly acquires.
In some embodiments of the present application, the indication information of the first SL PL includes a first identifier for directly characterizing a size relationship of the first SL PL with the DL PL of the first terminal. The above-mentioned DL PL of the first terminal refers to a DL PL of the first terminal newly acquired by the first terminal apparatus.
S205, the network device sends a first SL power control model to the first terminal, and the first terminal receives the first SL power control model sent by the network device, where the first SL power control model is determined by the network device according to the indication information of the first SLPL, and the first SL power control model is used by the first terminal to update the SL transmission power.
The power control model of the first terminal may be determined based on the DL PL of the first terminal, or based on the SL PL of the first terminal, or based on both the DL PL of the first terminal and the SL PL of the first terminal, and the determined power control models of the first terminal are generally different in the above three cases.
In some embodiments of the present application, the calculation formula of the SL transmit power of the first terminal and the required SL power control parameter are different in the above three cases.
In some embodiments of the present application, the SL transmit power of the first terminal is calculated in the same manner in the three cases, but with different SL power control parameters. For example, SL transmit power is expressed as follows in all of the three cases described above.
Figure BDA0002384627070000091
Optionally, if the network device determines that the first SL PL is less than or equal to the DL PL of the first terminal according to the indication information of the first SLPL, a parameter PL in the SL power control parameters is equal to the DL PL of the first terminal; if the network equipment determines that the first SL PL is larger than the DL PL of the first terminal according to the indication information of the first SLPL, the parameter PL in the SL power control parameters is equal to the first SL PL; if the network equipment knows the first SLPL according to the indication information of the first SLPL and the network equipment does not receive the DL PL of the first terminal, the parameter PL in the SL power control parameters is equal to the first SL PL.
By implementing the embodiment of the application, the first terminal determines that the reporting mode of the measurement result of the SLPL is event-triggered reporting through the configuration information sent by the network equipment, and acquires the trigger event triggering the reporting of the first terminal, and the first terminal can determine the measurement value of the SLPL according to the SLRSRP measured and reported by the second terminal, and send the indication information of the SLPL to the network equipment when at least one of the one or more events is met, so that the measurement reporting of the SLPL is realized. By the embodiment of the application, the measurement reporting of the SLPL can be realized, so that better SL power control is realized.
In this embodiment, the manner for reporting the SL measurement result to the first terminal by the second terminal may be periodic reporting or event-triggered reporting. If the reporting mode of the SL measurement result of the second terminal is event-triggered reporting, the event triggering the second terminal to report may include: event 1, event, and/or event 3. The event 1 is that the SLRSRP measurement value exceeds a first threshold, the event 2 is that the SLRSRP measurement value is lower than a second threshold, and the event 3 is that a difference between the SLRSRP current measurement value and an SLRSRP report value closest to the current time exceeds a seventh threshold.
It should be noted that when the SL measurement result of the second terminal continuously satisfies event 1 or event 2, the second terminal cannot continuously report according to the event triggering criterion. Event 3 can solve the problem that the events 1 and 2 cannot be reported continuously. However, the first reporting of event 3 how Rx UEs are triggered remains to be solved.
Fig. 3 is a schematic flow chart of another power control method provided in an embodiment of the present application. As shown in fig. 3, in order to complete the SL measurement and measurement report of the Rx UE to achieve better SL power control, step S202 further includes, but is not limited to, steps S206 to S207. Possible implementations of embodiments of the method are described further below.
And S206, the first terminal sends second configuration information to the second terminal, the second terminal receives the second configuration information sent by the first terminal, and the second configuration information is used for the second terminal to measure and report the SL RSRP.
In some embodiments of the present application, the second configuration information includes a first measurement object of the SL measurement of the second terminal, and a first event that triggers the second terminal to report the SL RSRP measurement result. The first event is that a difference value between a first measurement value of the SL RSRP and a first reported value of the SL RSRP exceeds a seventh threshold, and the first reported value is a latest reported value of the SL RSRP before the second terminal acquires the first measurement value.
It can be understood that the last reported value of the SL RSRP before the first measurement value refers to the SL RSRP measurement value that is reported to the first terminal last time before the second terminal obtains the first measurement value.
It should be noted that the second configuration information may include one or more other triggering events in addition to the first event. And when at least one event in the second configuration information is met, the second terminal reports the SL RSRP measurement result to the network equipment.
In some embodiments of the present application, the second configuration information includes a first measurement object of the SL measurement of the second terminal, and a reporting mode for controlling the second terminal to report the SLRSRP measurement result, where the reporting mode is a periodic reporting. The second configuration information may further include a reporting period of the SLRSRP measurement result.
It is understood that the first event is the aforementioned event 3.
It should be noted that the first measurement object may be understood as SL transmission resource between the first terminal and the second terminal. That is, the first terminal transmits SL traffic data to the second terminal based on the first measurement object.
And S207, if the reporting mode of the SLRSRP measurement result reported by the second terminal is event-triggered reporting, the second terminal sends a first reported value of the first event to the first terminal, and the first reported value is the latest SL RSRP measurement value measured by the second terminal based on the first measurement object when the first condition is met.
The first condition is that the second terminal obtains a first measurement value of the SL RSRP after receiving the first configuration information; or, the first condition is the end of the first time period; or the first condition is that the measured value acquired by the second terminal in the second time period is not in the first interval; or the first condition is that the difference values between the measurement value acquired by the second terminal in the third time period and the first reference value are all larger than an eighth threshold; the starting time of the first time period, the second time period and the third time period is equal to or later than the time when the second terminal receives the second configuration information.
In some embodiments of the present application, the first configuration information may further include second configuration information.
It is to be understood that the second configuration information may be configured by the first terminal, or may be sent to the first terminal by the network device. This is not particularly limited in the embodiments of the present application.
In some embodiments of the present application, before step S207, the power control method further includes: a second terminal receives a first data packet sent by a first terminal, wherein the first data packet comprises a second DMRS; and the second terminal performs filtering measurement on the first data packet based on the first measurement object to acquire the receiving power of the second DMRS, wherein the first reported value is equal to the receiving power of the second DMRS.
Alternatively, the SL measurement reporting model 400 may be as shown in fig. 4. The measurement reporting model is maintained based on a single carrier (carrier) or a single resource pool (per resource pool).
As shown in fig. 4, the TxUE sends a SL packet to the RxUE, which carries the DMRS. After receiving the SL data packet sent by the TxUE, the RxUE firstly performs physical layer filtering based on a single carrier or a single resource pool, and then performs RRC layer filtering on the physical layer filtering result to generate the receiving power of the DMRS. The received power of the DMRS is the SL measurement result of the SL packet, and may be referred to as SLRSRP.
In some embodiments of the present application, the first measurement object indicates a first carrier frequency, and the RxUE performs SL measurements based on a single carrier.
In some embodiments of the present application, the first measurement object indicates a first resource pool in the second carrier frequency, and the RxUE performs SL measurement based on a single resource pool. The second carrier frequency comprises one or more resource pools, and the one or more resource pools of the second carrier frequency comprise the first resource pool.
In some embodiments of the present application, the first measurement object may also indicate a first resource pool in the first BWP for the third carrier frequency. Wherein the third carrier frequency comprises one or more BWPs, a first BWP in the third carrier frequency comprises one or more resource pools, and the one or more resource pools of the first BWP comprise the first resource pool.
It should be noted that the first measurement object is used to indicate a first resource pool, and the first measurement object may be only an identity of the resource pool. For example, the first measurement object indicates a first resource pool in the second carrier frequency, and the first measurement object may include an identifier in the second carrier frequency and an identifier of the first resource pool in the second carrier frequency. For example, the first measurement object indicates a first resource pool in the first BWP of the third carrier frequency, the first measurement object may include therein an identifier of the third carrier frequency, an identifier of the first BWP in the third carrier frequency, and an identifier of the first resource pool in the first BWP, or the first measurement object may include therein an identifier of the third carrier frequency and an identifier of the first resource pool in the first BWP. Therefore, the second terminal cannot determine the specific configuration information of the first resource pool according to the first measurement object only.
In the embodiment of the application, each resource pool is allocated with a unique identity. If the first measurement object is used to indicate the identity of the first resource pool in the first BWP of the third carrier frequency, the allocation method of the resource pool identity may include method one and method two.
The method comprises the following steps: the BWPs in the third carrier frequency are assigned ids from scratch and then the resource pool within each BWP is assigned ids from scratch. For example, the third carrier frequency includes a BWPs, the ids of the a BWPs may be 0 to a-1, respectively, where the BWP identified as i includes B resource pools, and the ids of the B resource pools may be 0 to B-1, respectively.
The method comprises the following steps: all resource pools within all BWPs in the third carrier frequency are assigned unique identities in order from zero. For example, the third frequency carrier includes a BWPs, the a BWPs collectively include C resource pools, and the identities of the C resource pools may be 0 to B-1, respectively.
Besides the above method, in the embodiment of the present application, the identity may also be allocated to the resource pool by other methods. And is not particularly limited herein.
In some embodiments of the present application, the first measurement object indicates an identity of a first resource pool in the second carrier frequency, and the second configuration information further includes configuration information of one or more resource pools of the second carrier frequency.
In some embodiments of the present application, the first measurement object indicates an identity of the first resource pool in the first BWP of the third radio, and the second configuration information further includes configuration information of one or more BWPs of the third radio and configuration information of one or more resource pools in each BWP of the third radio.
In some embodiments of the present application, the first measurement object indicates an identity of the first resource pool in the second carrier frequency, and before step S207, the power control method further includes: and the first terminal sends third configuration information to the second terminal, wherein the third configuration information comprises configuration information of one or more resource pools of the second carrier frequency.
In some embodiments of the present application, the first measurement object indicates an identity of the first resource pool in the first BWP of the third carrier frequency, and before step S207, the power control method further includes: the first terminal sends third configuration information to the second terminal, wherein the third configuration information includes configuration information of one or more BWPs of a third carrier frequency and configuration information of one or more resource pools in each BWP of the third carrier frequency.
When the service is a periodic service, the reporting mode of the SL measurement result is usually selected to be periodically reported. If the SL service period of the first terminal changes during the SL measurement and reporting process, the measurement may be abnormal, and further, the Rx UE may report abnormal. This is because the SL measurement of the Rx UE is determined based on the DMRS and the measurement can be performed only in the presence of traffic. When the TxUE knows that the SL service period changes, the TxUE can inform the network equipment of the change of the SL service period and request the network equipment to send a measurement configuration message again. Then, the TxUE sends a new SL measurement configuration to the Rx UE according to the measurement configuration message sent by the network device. However, rx UEs still report periodically according to the previous reporting period before receiving new SL measurement configuration from txues. Since the TxUE does not send SL service data to the Rx UE within a first period of time (e.g., before the TxUE sends a new SL measurement configuration to the Rx UE) after the SL service period changes, the Rx UE may not obtain a measurement result within one or more reporting periods.
In some embodiments of the present application, if the reporting mode of the SLRSRP measurement result reported by the second terminal is periodic reporting, and after the second terminal receives the second configuration information sent by the first terminal, if the second terminal does not measure the SLRSRP measurement value in the first reporting period, the second terminal sends a second reporting value to the first terminal in the first reporting period, or the second terminal does not send the SLRSRP measurement value to the first terminal in the first reporting period, where the second reporting value is equal to the SL RSRP measurement value triggered to be reported by the second terminal in the previous reporting period of the first reporting period.
By implementing the embodiment of the application, the second terminal sends the first reported value of the first event to the first terminal when the first condition is met, and the first reported value is the latest measured value of the SL RSRP when the second terminal meets the first condition, so that the technical problem that the first reported value of the first event cannot be triggered is solved. By implementing the embodiment of the application, the second terminal may report the report value of the previous reporting period of the first reporting period in the first reporting period, so that when the SL service period of the first terminal changes, so that the second terminal does not measure the SLRSRP measurement value in the first reporting period, the measurement abnormality of the SL RSRP can be avoided, and the reporting abnormality of the SL RSRP can be avoided.
Referring to fig. 5, fig. 5 illustrates a terminal device 500 provided in an embodiment of the present application. As shown in fig. 5, the terminal device 500 may include: one or more terminal device processors 501, memory 502, communication interface 503, receiver 505, transmitter 506, coupler 507, antenna 508, terminal device interface 509. These components may be connected by a bus 504 or otherwise, as illustrated in FIG. 5 by a bus connection. Wherein:
the communication interface 503 may be used for the terminal device 500 to communicate with other communication devices, such as network devices. Illustratively, the network device may be the network device 500 shown in fig. 5. For example, the communication interface 503 may be a 5G communication interface, or may be a communication interface of a future new air interface. Not limited to a wireless communication interface, the terminal device 500 may also be configured with a wired communication interface 503, such as a Local Access Network (LAN) interface. Transmitter 506 may be configured to transmit signals output by terminal device processor 501. Receiver 505 may be used for receive processing of mobile communication signals received by antenna 508.
In some embodiments of the present application, the transmitter 506 and the receiver 505 may be considered as one wireless modem. In the terminal device 500, the number of the transmitters 506 and the receivers 505 may be one or more. The antenna 508 may be used to convert electromagnetic energy in the transmission line to electromagnetic energy in free space, or vice versa. The coupler 507 is used for dividing the mobile communication signal received by the antenna 508 into a plurality of paths and distributing the paths to a plurality of receivers 505.
In addition to the transmitter 506 and the receiver 505 shown in fig. 5, the terminal device 500 may also include other communication means, such as a GPS module, a bluetooth (bluetooth) module, a wireless fidelity (Wi-Fi) module, and the like. Not limited to wireless communication, the terminal device 500 may also be configured with a wired network interface (such as a LAN interface) to support wired communication.
The terminal device 500 may further include an input-output module. The input/output module may be used to implement interaction between the terminal device 500 and the terminal device/external environment, and may mainly include an audio input/output module, a key input module, a display, and the like. For example, the input/output module may further include: cameras, touch screens, sensors, and the like. The input/output module communicates with the terminal device processor 501 through the terminal device interface 509.
Memory 502 is coupled to terminal device processor 501 for storing various software programs and/or sets of instructions. Illustratively, the memory 502 may comprise high-speed random access memory, and may also comprise non-volatile memory, such as one or more magnetic disk storage devices, flash memory devices, or other non-volatile solid-state storage devices. The memory 502 may store an operating system (hereinafter referred to simply as a system), such as an embedded operating system like ANDROID, IOS, WINDOWS, or LINUX. The memory 502 may also store a network communication program that may be used to communicate with one or more additional devices, one or more terminal devices, and one or more network devices.
In some embodiments of the present application, the memory 502 may be used to store an implementation program of the power control method provided in one or more embodiments of the present application on the terminal device 500 side. For the implementation of the power control method provided in one or more embodiments of the present application, please refer to the above embodiments.
Terminal device processor 501 may be configured to read and execute computer readable instructions. Illustratively, the terminal device processor 501 may be configured to call a program stored in the memory 502, for example, an implementation program of the power control method provided by one or more embodiments of the present application on the terminal device 500 side, and execute the instructions contained in the program.
It is to be understood that the terminal device 500 may be the terminal device 102 in the communication system 100 shown in fig. 1.
It should be noted that the terminal device 500 shown in fig. 5 is only one implementation manner of the embodiment of the present application, and in practical applications, the terminal device 500 may further include more or less components, which is not limited herein.
Referring to fig. 6, fig. 6 illustrates a network device 600 provided in an embodiment of the present application. As shown in fig. 6, the network device 600 may include: one or more network device processors 601, memory 602, and a communications interface 603. These components may be connected by a bus 604, or otherwise, as illustrated in FIG. 6 by way of example. Wherein:
the communication interface 603 may be used for the network device 600 to communicate with other communication devices, such as terminal devices or other network devices. For example, the communication interface 603 may be a 5G communication interface, or may be a communication interface of a future new air interface. Without being limited to a wireless communication interface, network device 600 may also be configured with a wired communication interface 603 to support wired communication, e.g., a backhaul link between one network device 600 and other network devices 600 may be a wired communication connection.
The memory 602 is coupled to the network device processor 601 for storing various software programs and/or sets of instructions. Illustratively, the memory 602 may comprise high-speed random access memory, and may also comprise non-volatile memory, such as one or more magnetic disk storage devices, flash memory devices, or other non-volatile solid-state storage devices. The memory 602 may store an operating system (hereinafter referred to as a system), such as an embedded operating system like upos, vxWorks, RTLinux, etc. The memory 602 may also store a network communication program that may be used to communicate with one or more additional devices, one or more terminal devices, one or more network devices.
In embodiments of the present application, the network device processor 601 may be configured to read and execute computer readable instructions. Illustratively, the network device processor 601 may be configured to call a program stored in the memory 602, for example, a program implemented on the network device 600 side of the power control method provided by one or more embodiments of the present application, and execute the instructions contained in the program.
It is to be appreciated that the network device 600 can be a network device in the communication system 100 shown in fig. 1.
It should be noted that the network device 600 shown in fig. 6 is only one implementation manner of the embodiment of the present application, and in practical applications, the network device 600 may further include more or less components, which is not limited herein.
The embodiment of the present application further provides a chip system 700, which includes one or more processors 701 and an interface circuit 702, where the processors 701 and the interface circuit 702 are connected.
The processor 701 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be implemented by integrated logic circuits of hardware or instructions in the form of software in the processor 701. The processor 701 described above may be a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components. The methods, steps disclosed in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The interface circuit 702 may complete transmission or reception of data, instructions, or information, and the processor 701 may perform processing using the data, instructions, or other information received by the interface circuit 702, and may transmit the processing completion information through the interface circuit 702.
Optionally, the system-on-chip further includes a memory 703, and the memory 703 may include a read-only memory and a random access memory, and provides operating instructions and data to the processor. A portion of the memory 703 may also include non-volatile random access memory (NVRAM).
Optionally, the memory 703 stores executable software modules or data structures, and the processor 703 may perform corresponding operations by calling operation instructions stored in the memory (the operation instructions may be stored in an operating system).
Alternatively, the chip system may be used in a terminal device or a network device according to the embodiments of the present application. Optionally, the interface circuit 702 is configured to perform the steps of receiving and transmitting by a network device or a terminal device in the embodiments shown in fig. 2 and fig. 3. The processor 701 is configured to execute steps of processing of a network device or a terminal device in the embodiments shown in fig. 2 and fig. 3. The memory 703 is used for storing data and instructions of the network device or the terminal device and the like in the embodiments shown in fig. 2 and 3.
The embodiment of the application also provides a computer readable storage medium. The methods described in the above method embodiments may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. If implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media may include computer storage media and communication media, and may include any medium that can communicate a computer program from one place to another. A storage media may be any available media that can be accessed by a computer.
As an alternative design, a computer-readable storage medium may include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. Also, any connection is properly termed a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital Subscriber Line (DSL), or wireless technologies such as infrared, radio, and microwave, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of medium. Disk and disc, as used herein, includes Compact Disc (CD), laser disc, optical disc, digital Versatile Disc (DVD), floppy disk and blu-ray disc where disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above should also be included within the scope of computer-readable media.
The embodiment of the application also provides a computer program product. The methods described in the above method embodiments may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. If implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. The procedures or functions described in the above method embodiments are generated in whole or in part when the above computer program instructions are loaded and executed on a computer. The computer may be a general purpose computer, a special purpose computer, a computer network, a network appliance, a terminal device, or other programmable apparatus.
The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims (22)

1. A method of power control, comprising:
a first terminal receives first configuration information sent by network equipment;
wherein the first configuration information includes an identifier of a second terminal, and one or more events that trigger the first terminal to report a measurement result of a sidelink path loss (SL PL), the SLPL represents propagation path loss between the first terminal and the second terminal, the SL PL measurement result is used for determining a power control model of the first terminal, the power control model is used for the first terminal to determine SL transmission power, and the one or more events include at least one of the following events: the SLPL is equal to or less than a first threshold value, the SLPL is greater than a second threshold value, the SLPL is equal to or less than a downlink path loss (DLPL) of the first terminal, the SLPL is greater than the DLPL, the SLPL is greater than a third threshold value and the DLPL is equal to or less than a fourth threshold value, the SLPL is equal to or less than a fifth threshold value and the DLPL is greater than a sixth threshold value.
2. The method of claim 1, further comprising:
the first terminal determines a first SLPL according to the reference signal received power (SL RSRP) of a first side link measured and reported by the second terminal;
if the first SLPL satisfies at least one of the one or more events, the first terminal transmits indication information of the first SLPL to the network device.
3. The method of claim 1, further comprising:
the first terminal sends second configuration information to the second terminal;
the second configuration information includes a first measurement object of SL measurement and a first event that triggers the second terminal to report a measurement result of SL RSRP, where the first event is that a difference between a first measurement value of SL RSRP and a first reported value of SL RSRP exceeds a seventh threshold, and the first reported value is a reported value of SL RSRP last time before the second terminal acquires the first measurement value.
4. The method of claim 3, wherein after the first terminal sends the second configuration information to the second terminal, further comprising:
the first terminal receives a first reported value of the first event sent by the second terminal, wherein the first reported value is a latest SL RSRP measured by the second terminal based on the first measurement object when the first condition is met;
wherein the first condition is that the second terminal obtains a first measurement value of the SL RSRP after receiving the first configuration information; or, the first condition is the end of a first time period; or, the first condition is that the measured values obtained by the second terminal in the second time period are not in the first interval; or, the first condition is that the difference values between the measurement value obtained by the second terminal and the first reference value in the third time period are both greater than an eighth threshold; the starting time of the first time period, the second time period and the third time period is equal to or later than the time when the second terminal receives the second configuration information.
5. The method of claim 1, further comprising:
the first terminal sends second configuration information to the second terminal;
the second configuration information includes a first measurement object of the SL measurement, and a reporting mode in which the second terminal reports the SL RSRP measurement result, where the reporting mode is a periodic reporting.
6. The method of claim 5, wherein after the first terminal sends the second configuration information to the second terminal, further comprising:
and the first terminal receives a second reporting value which is triggered and reported by the second terminal in the first reporting period, wherein the second reporting value is equal to the measured value of the SL RSRP which is triggered and reported by the second terminal in the previous reporting period of the first reporting period.
7. The method according to any of claims 3 to 5, wherein the first measurement object indicates a first resource pool in a second carrier frequency, wherein the second carrier frequency comprises one or more resource pools, and wherein the one or more resource pools of the second carrier frequency comprises the first resource pool.
8. The method according to any of claims 3 to 5, wherein the first measurement object indicates a first resource pool in a first fractional bandwidth BWP of a third carrier frequency, the third carrier frequency comprising one or more BWPs, a first BWP of the third carrier frequency comprising one or more resource pools, the one or more resource pools of the first BWP comprising the first resource pool.
9. The method of claim 8, wherein the second configuration information further comprises configuration information of one or more BWPs of the third carrier frequency, and configuration information of one or more resource pools in each BWP of the third carrier frequency.
10. The method of claim 8, wherein before the first terminal receives the first reported value of the first event sent by the second terminal, the method further comprises:
the first terminal sends third configuration information to the second terminal, where the third configuration information includes configuration information of one or more BWPs of the third carrier frequency and configuration information of one or more resource pools in each BWP of the third carrier frequency.
11. The method of claim 2, wherein the indication information for the first SL PL comprises the first SLPL.
12. The method of claim 2, wherein the indication information of the first SL PL comprises a first identifier for characterizing a size relationship of the first SL PL with a DL PL of the first terminal.
13. The method of claim 5, wherein after the first terminal sends the second configuration information to the second terminal, the first terminal does not receive the measured value of the SL RSRP sent by the second terminal in a first reporting period, and the second terminal does not measure the measured value of the SL RSRP in the first reporting period.
14. A method of power control, comprising:
the network equipment sends first configuration information to a first terminal;
wherein the first configuration information includes an identifier of a second terminal, and one or more events that trigger the first terminal to report an SL PL measurement result, the SLPL represents a propagation path loss between the first terminal and the second terminal, the SL PL measurement result is used to determine a power control model of the first terminal, the power control model is used for the first terminal to determine an SL transmit power, and the one or more events include at least one of the following events: the SLPL is equal to or less than a first threshold value, the SLPL is greater than a second threshold value, the SLPL is equal to or less than a DLPL of the first terminal, the SLPL is greater than the DLPL, the SLPL is greater than a third threshold value and is equal to or less than a fourth threshold value, the SLPL is equal to or less than a fifth threshold value and is greater than a sixth threshold value.
15. The method of claim 14, further comprising:
the network equipment receives indication information of a first SLPL (slow packet loss) sent by the first terminal;
the first SLPL is determined by the first terminal according to a first side-link reference signal received power (SL RSRP) measured and reported by the second terminal and is sent when the first SLPL meets at least one of the one or more events.
16. The method of claim 15, wherein the indication information of the first SL PL comprises the first SLPL.
17. The method of claim 15, wherein the indication information of the first SL PL comprises a first identifier used to characterize a size relationship of the first SL PL with the DL PL of the first terminal.
18. A power control system, characterized in that the power control system comprises one or more of a network device, a first terminal and a second terminal, wherein the first terminal performs the method of any of claims 1-13 and the network device performs the method of any of claims 14-17.
19. A communication apparatus comprising a processor and an interface, wherein,
the interface is used for inputting data to be processed;
the processor is used for processing the data to be processed according to the method of any one of claims 1 to 13 or 14 to 17 to obtain a processing result; and
the interface is also used for outputting the processing result.
20. The apparatus according to claim 19, wherein the apparatus further comprises a memory for storing instructions that when executed by the processor cause the method of any one of claims 1-13 or 14-17 to be performed.
21. A communication device according to claim 19 or 20, wherein the device is a chip.
22. A computer-readable storage medium for storing instructions that, when executed in a communication device, cause the method of any of claims 1-13 or 14-17 to be performed.
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