WO2020143632A1 - Sidelink power control method and terminal - Google Patents

Abstract

Embodiments of the present application provide a sidelink power control method and a terminal, pertaining to the field of wireless communications, and providing a power sharing method to a terminal sending information via a first transmission link and a second transmission link, such that a transmission power sum of the first transmission link and the second transmission link for sidelink transmission is controlled to not exceed a maximum transmission power of the terminal. The method comprises: acquiring a first maximum transmission power and a second maximum transmission power; if a terminal determines to send first information via a first transmission link and second information via a second transmission link in a frequency-division multiplexing mode, calculating a first actual power and a second actual power according to the first maximum transmission power and the second maximum transmission power; and if a sum of the first actual power and the second actual power is greater than a first power threshold, determining a first final power and a second final power according to the first actual power and the second actual power.

Description

Side link power control method and terminal

"This application requires the priority of the Chinese patent application submitted to the State Intellectual Property Office on January 11, 2019, with the application number 201910028353.5 and the invention titled "side link power control method and terminal", the entire contents of which are incorporated by reference in this document Applying."

Technical field

This application relates to the field of wireless communication, and in particular, to a side link power control method and terminal.

Background technique

With the continuous development of wireless communication technology, following the Long Term Evolution (LTE) network, the Third Generation Partnership Project will introduce the fifth generation mobile communication (5G) technology, which has greater data capacity and more New data interface (NR) network with fast data processing speed. At present, the LTE network has excellent performance and has been widely deployed by operators. Therefore, in the early stage of the development of 5G technology, the NR network cannot be deployed independently, and it needs to work closely with the LTE network.

If the LTE network and the NR network are deployed at the same time, the terminals in the side link communicate using Frequency Division Duplexing (FDD). The sum of the transmission power of the LTE network of the terminal and the transmission power of the NR network may be greater than the terminal The maximum transmit power, however, there is currently no method for power control of the LTE network and NR network of the terminal in the side link.

Summary of the invention

An embodiment of the present application provides a side link power control method and a terminal, and provides a power sharing method for a terminal to send information through a first transmission link and a second transmission link, which can implement control of the first transmission link in the side link The sum of the transmission power with the second transmission link does not exceed the maximum transmission power of the terminal.

To achieve the above purpose, the embodiments of the present application adopt the following technical solutions:

In a first aspect, an embodiment of the present application provides a side link power control method. The method includes: acquiring a first maximum transmission power and a second maximum transmission power, where the first maximum transmission power is transmitted by a terminal through a first transmission link The maximum transmit power of the first information, the second maximum transmit power is the maximum transmit power of the terminal to send the second information through the second transmission link; if the terminal determines to use frequency division multiplexing to send through the first transmission link The first information, the second information is sent through the second transmission link, the first actual power and the second actual power are calculated according to the first maximum transmission power and the second maximum transmission power, the first actual power is the frequency of use of the terminal The actual power for sending the first information through the first transmission link in the multiplexing mode, the second actual power is the actual power for the terminal to send the second information through the second transmission link using the frequency division multiplexing method; The sum of an actual power and a second actual power is greater than a first power threshold, and a first final power and a second final power are determined according to the first actual power and the second actual power, the first final power is the terminal passing the first The final transmission power of the first information sent by the transmission link, and the second final power is the final transmission power of the second information sent by the terminal through the second transmission link. Based on this solution, the terminal can realize that the sum of the transmission power of the first transmission link and the second transmission link in the side link does not exceed the maximum transmission power of the terminal.

With reference to the first aspect, in a possible implementation, determining the first final power and the second final power according to the first actual power and the second actual power includes: reducing the second actual power so that the first actual power The sum of the power and the reduced second actual power is less than or equal to the first power threshold; determining that the first actual power is the first final power; and determining that the reduced second actual power is the second final power. Based on this solution, the terminal can reduce the second actual power to achieve that the sum of the transmission power of the first transmission link and the second transmission link in the side link does not exceed the maximum transmission power of the terminal.

With reference to the first aspect and the foregoing possible implementation manner, in another possible implementation manner, the method further includes: acquiring a first parameter, the first parameter is a parameter determined according to quality of service QoS; acquiring the first parameter corresponds to The first priority level; obtain the first difference, the first difference is the difference between the second actual power and the second final power; if the first difference is greater than or equal to the first priority level corresponding to the first A parameter threshold, the terminal stops sending the second information. Based on this solution, the terminal can control that the sum of the transmission power of the first transmission link and the second transmission link does not exceed the maximum transmission power of the terminal by not sending the second information.

With reference to the first aspect and the foregoing possible implementation manner, in another possible implementation manner, determining the first final power and the second final power according to the first actual power and the second actual power includes: if the terminal passes The second information sent by the second transmission link is prior to the first information sent by the terminal through the first transmission link in the time domain, reducing the first actual power, so that the reduced first actual power and the second The sum of the actual power is less than or equal to the first power threshold; it is determined that the reduced first actual power is the first final power; the second actual power is determined to be the second final power; or, if the terminal transmits via the first transmission link The first information is prior to the second information sent by the terminal through the second transmission link in the time domain, and the second actual power is reduced, so that the sum of the first actual power and the reduced second actual power is less than or equal to the first Power threshold; determine the first actual power as the first final power; determine the reduced second actual power as the second final power. Based on this solution, the terminal may sequentially determine to reduce the first actual power or the second actual power according to the time sequence of the first information and the second information in the time domain, thereby implementing control of the first transmission link and the second The sum of the transmission power of the two transmission links does not exceed the maximum transmission power of the terminal.

With reference to the first aspect and the foregoing possible implementation manner, in another possible implementation manner, the method further includes: acquiring a second priority level of the terminal, where the second priority level is a priority level determined according to QoS ; Obtain a second difference, the second difference is the difference between the first actual power and the first final power; if the second difference is greater than or equal to the second parameter threshold corresponding to the second priority level, the terminal Stop sending the first message; or, obtain the third parameter, which is a parameter determined according to QoS; obtain the third priority level corresponding to the third parameter; obtain the third difference, which is the third difference The difference between the second actual power and the second final power; if the third difference is greater than or equal to the third parameter threshold corresponding to the third priority level, the terminal stops sending the second information. Based on this solution, the terminal can stop sending the first information or the second information to control the total transmission power of the first transmission link and the second transmission link in the side link to not exceed the maximum transmission power of the terminal.

With reference to the first aspect and the foregoing possible implementation manners, in another possible implementation manner, the first parameter threshold is a parameter threshold preset by the terminal or a parameter threshold configured by higher layer signaling, and the higher layer signaling is System information block SIB signaling, master information block MIB signaling or radio resource control RRC signaling. Based on this solution, the terminal can determine whether to send the second information by setting the first parameter threshold, so that the sum of the transmission power of the first transmission link and the second transmission link in the side link is controlled not to exceed the maximum value of the terminal Transmit power.

With reference to the first aspect and the foregoing possible implementation manner, in another possible implementation manner, the first maximum transmission power and the second maximum transmission power are determined according to the first initial power and the second initial power. An initial power is the initial transmission power of the terminal sending the first information through the first transmission link, and the second initial power is the initial transmission power of the terminal sending the second information through the second transmission link. Based on this solution, the terminal may determine the first maximum power and the second maximum power according to the first initial power and the second initial power, and determine the first actual power and the second actual power according to the first maximum power and the second maximum power, and further The first final power and the second final power are determined according to the first actual power and the second actual power, so that the sum of the transmission power of the first transmission link and the second transmission link in the side link is controlled not to exceed the maximum value of the terminal Transmit power.

With reference to the first aspect and the foregoing possible implementation manners, in another possible implementation manner, the first initial power is configured by the first base station, the first base station is the base station of the first transmission link; the second The initial power is configured by the second base station, and the second base station is the base station of the second transmission link. Based on this solution, the terminal may receive the first initial power sent by the first base station, receive the second initial power sent by the second base station, and determine the first maximum power and the second maximum power according to the first initial power and the second initial power, The first actual power and the second actual power are determined according to the first maximum power and the second maximum power, and then the first final power and the second final power are determined according to the first actual power and the second actual power, so as to realize the side link Control the sum of the transmission power of the first transmission link and the second transmission link not to exceed the maximum transmission power of the terminal.

With reference to the first aspect and the foregoing possible implementation manner, in another possible implementation manner, before acquiring the first maximum transmission power and the second maximum transmission power, the method further includes: acquiring the first initial power and the second initial Power, the first initial power is the initial transmission power of the terminal sending the first information through the first transmission link, and the second initial power is the initial transmission power of the terminal sending the second information through the second transmission link; If the sum of the first initial power and the second initial power is greater than the second power threshold, the terminal determines to use time division multiplexing or code division multiplexing to send the first information through the first transmission link and through the second transmission chain Channel to send second information, the second power threshold is determined by P _PowerClass and/or P _EMAX , where P _{PowerClass is} used to indicate the maximum power of the terminal defined according to the type of the terminal, and P _{EMAX is} used to indicate the RRC signal Let the configured maximum power allowed by the terminal. Based on this solution, the terminal can also determine to use time-division multiplexing or code-division multiplexing to send the first information through the first transmission link and the second information through the second transmission link, thereby achieving control in the side link The sum of the transmission power of the first transmission link and the second transmission link does not exceed the maximum transmission power of the terminal.

With reference to the first aspect and the foregoing possible implementation manners, in another possible implementation manner, the first power threshold is determined by at least one of P _PowerClass , P _EMAX, and P _FDM , where P _{PowerClass is} used to indicate The maximum power of the terminal defined according to the type of the terminal, P _{EMAX is} used to indicate the maximum power allowed by the terminal configured by RRC signaling, and P _{FDM is} used to indicate the power defined by the terminal when transmitting information using frequency division multiplexing. The maximum power of the terminal. Based on this solution, the terminal can determine the first power threshold by at least one of P _PowerClass , P _EMAX, and P _FDM , thereby determining whether the sum of the first actual power and the second actual power is greater than the first power threshold, if the first actual The sum of the power and the second actual power is less than or equal to the first power threshold, the terminal may use the first actual power to send the first information through the first transmission link, and use the second actual power to send the second information through the second transmission link, If the sum of the first actual power and the second actual power is greater than the first power threshold, the terminal may determine the first final power and the second final power according to the first actual power and the second actual power, thereby implementing control in the side link The sum of the transmission power of the first transmission link and the second transmission link does not exceed the maximum transmission power of the terminal.

With reference to the first aspect and the foregoing possible implementation manner, in another possible implementation manner, the first maximum transmission power is less than or equal to the first initial power, and the second maximum transmission power is less than or equal to the second initial power, the first The initial power is the initial transmission power of the terminal sending the first information through the first transmission link, and the second initial power is the initial transmission power of the terminal sending the second information through the second transmission link. Based on this solution, the terminal may define that the first maximum transmit power is less than or equal to the first initial power and the second maximum transmit power is less than or equal to the second initial power, thereby defining that the first actual power calculated according to the first maximum transmit power is less than the first An initial power, the second actual power calculated according to the second maximum transmit power is also less than the second initial power, and thereby the first final power determined according to the first actual power and the second final power determined according to the second actual power are realized And does not exceed the maximum transmit power of the terminal.

In a second aspect, an embodiment of the present application provides a side link power control method. The method includes: if a terminal determines to use frequency division multiplexing to send first information through a first transmission link and send through a second transmission link The second information is to obtain the first priority level of the terminal, the first priority level is a priority level determined according to QoS; to obtain the first parameter, the first parameter is a parameter determined according to QoS; to obtain the first parameter Corresponding second priority level; determine the first reserved power and the second reserved power according to the first priority level and the second priority level, the first reserved power is the terminal through the first transmission chain The minimum transmission power for the first information sent by the channel, and the second reserved power is the minimum transmission power for the terminal to send the second information through the second transmission link. Based on this solution, the terminal may use the first reserved power to send the first information through the first transmission link, and/or use the second reserved power to send the second information through the second transmission link, thereby realizing the side chain The sum of the transmission power of the first transmission link and the second transmission link in the channel is controlled not to exceed the maximum transmission power of the terminal.

With reference to the second aspect, in a possible implementation manner, determining the first reserved power and the second reserved power according to the first priority level and the second priority level includes: according to the first priority level And the second priority level determines the ratio m of the first reserved power to the first power threshold and the ratio n of the second reserved power to the first power threshold, where m+n≤1, 0<m<1 , 0<n<1; determine the first reserved power and the second reserved power according to the first power threshold, m and n. Based on this solution, the terminal may determine the first reserved power and the second reservation by determining the ratio m of the first reserved power to the first power threshold and the ratio n of the second reserved power to the first power threshold Power, so that the sum of the transmission power of the first transmission link and the second transmission link in the side link is controlled not to exceed the maximum transmission power of the terminal.

With reference to the second aspect and the foregoing possible implementation manner, in another possible implementation manner, the ratio m of the first reserved power to the first power threshold is determined according to the first priority level and the second priority level. The ratio n of the second reserved power to the first power threshold includes: determining the ratio m of the first reserved power to the first power threshold and the second according to the difference between the first priority level and the second priority level The ratio n of reserved power to the first power threshold. Based on this solution, the terminal may determine the ratio of the first reserved power to the first power threshold m and the second reserved power to the first power threshold according to the difference between the first priority level and the second priority level Ratio n, so as to determine the first reserved power and the second reserved power, so as to control the sum of the transmission power of the first transmission link and the second transmission link in the side link to not exceed the maximum transmission power of the terminal.

With reference to the second aspect and the foregoing possible implementation manner, in another possible implementation manner, determining the first reserved power and the second reserved power according to the first priority level and the second priority level, further including : Determine the first reservation according to the first priority level, the second priority level, the first priority level threshold corresponding to the first priority level and the second priority level threshold corresponding to the second priority level The ratio m of power to the first power threshold and the ratio n of the second reserved power to the first power threshold, where m+n≤1, 0<m<1, 0<n<1; according to the first power threshold , M and n determine the first reserved power and the second reserved power. Based on this solution, the terminal may use the first priority level, the second priority level, the first priority level threshold corresponding to the first priority level and the second priority level corresponding to the second priority level The threshold determines the ratio m of the first reserved power to the first power threshold and the ratio n of the second reserved power to the first power threshold, thereby achieving control of the first transmission link and the second transmission link in the side link The sum of the transmit powers does not exceed the maximum transmit power of the terminal.

With reference to the second aspect and the foregoing possible implementation manners, in another possible implementation manner, the first power threshold is determined by at least one of P _PowerClass , P _EMAX, and P _FDM , where P _{PowerClass is} used to indicate The maximum power of the terminal defined according to the type of the terminal, P _{EMAX is} used to indicate the maximum power allowed by the terminal configured by RRC signaling, and P _{FDM is} used to indicate the power defined by the terminal when transmitting information using frequency division multiplexing. The maximum power of the terminal. Based on this solution, the terminal may determine the first power threshold by at least one of P _PowerClass , P _EMAX, and P _FDM , thereby determining the first reserved power and the second reserved power according to the first power threshold, m, and n In order to realize that the sum of the transmission power of the first transmission link and the second transmission link in the side link does not exceed the maximum transmission power of the terminal.

In a third aspect, an embodiment of the present application provides a terminal having the method and function described in the first aspect or the method and function described in the second aspect. This function can be realized by hardware, and can also be realized by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions.

An embodiment of the present application further provides a terminal, including: at least one processor, at least one memory, and a communication interface, the communication interface, the at least one memory, and the at least one processor are coupled; the terminal communicates with other devices through the communication interface , The at least one memory is used to store a computer program, so that when the computer program is executed by the at least one processor, the side link power control method described in the first aspect and various possible implementation manners thereof, or the second aspect is implemented And the side link power control method described in various possible implementation manners.

An embodiment of the present application further provides a system chip, which can be applied to a terminal. The system chip includes: at least one processor, and related program instructions are executed in the at least one processor to implement the first aspect. And the side link power control method described in various possible implementations thereof, or the side link power control method described in the second aspect and various possible implementations thereof. Optionally, the system chip may further include at least one memory, and the memory stores related program instructions.

Embodiments of the present application also provide a computer-readable storage medium, such as a non-transitory computer-readable storage medium. A computer program is stored thereon, and when the computer program is run on the computer, the computer is caused to execute any one of the possible methods of the first aspect or any possible method of the second aspect. For example, the computer may be at least one storage node.

An embodiment of the present application further provides a computer program product, which when executed on a computer, causes any method provided in the first aspect or any method provided in the second aspect to be executed. For example, the computer may be at least one storage node.

It is understandable that any of the terminals, system chips, computer-readable storage media, or computer program products provided above are used to perform the corresponding methods provided above. Therefore, for the beneficial effects that can be achieved, refer to the corresponding The beneficial effects of the method will not be repeated here.

BRIEF DESCRIPTION

FIG. 1 is a schematic diagram of symbol lengths corresponding to different subcarrier intervals provided by an embodiment of this application;

2 is a schematic diagram of an FDD frame structure of an NR network provided by an embodiment of this application;

3 is a schematic diagram of a TDD frame structure of an NR network provided by an embodiment of this application;

4 is a schematic diagram of V2X communication provided by an embodiment of the present application;

5 is a schematic diagram of a communication system architecture provided by an embodiment of the present application;

6 is a schematic diagram of a hardware structure of a communication device provided by an embodiment of this application;

7 is a schematic flowchart 1 of a side link power control method according to an embodiment of the present application;

8 is a second schematic flowchart of a side link power control method according to an embodiment of the present application;

9A is a third schematic flowchart of a side link power control method according to an embodiment of the present application;

9B is a fourth schematic flowchart of a side link power control method according to an embodiment of the present application;

10 is a time-domain schematic diagram of information sent by a first transmission link and a second transmission link provided by an embodiment of this application;

11 is a schematic flowchart 5 of a side link power control method according to an embodiment of the present application;

12 is a schematic structural diagram 1 of a terminal provided by an embodiment of the present application;

13 is a second schematic structural diagram of a terminal provided by an embodiment of the present application;

FIG. 14 is a third structural diagram of a terminal provided by an embodiment of the present application.

detailed description

In the New Radio Interface (NR) network, a variety of subcarrier intervals are introduced. The subcarrier interval can be 15kHz*2^ ⁿ , where the value of n can be -2, -1, 0, 1, 2 , 3, 4, and 5, therefore, depending on the value of n, the subcarrier spacing can take values from 3.75kHz to 480kHz. Different subcarrier intervals can correspond to different symbol lengths, subframe lengths, and time slot lengths. As shown in FIG. 1, it is a schematic diagram of the corresponding symbol lengths when the subcarrier intervals are 15 kHz, 30 kHz, and 60 kHz, respectively.

In an NR network, one time slot may include at least one of downlink transmission, guard interval GP, and uplink transmission. Therefore, a time slot can be divided into a time slot containing only downlink signals DL only slot, a time slot mainly containing downlink signals DL central slot, a time slot mainly containing uplink signals UL central slot and a time slot containing only uplink signals UL only slot. The base station and the terminal can use Time Division Duplexing (TDD) or FDD to communicate. If the base station and the terminal communicate using FDD, the downlink (Downlink, DL) and uplink (Uplink, UL) can work on different carriers at the same time, as shown in FIG. 2. If the base station and the terminal communicate in TDD mode, DL and UL can work on the same carrier, as shown in Figure 3, where PUCCH is a physical uplink control channel (Physical Uplink Control Channel). If the LTE network and the NR network are deployed at the same time, the terminal can communicate through the LTE network or through the NR network.

For LTE and NR dual connection, if the terminal is configured with a Master Cell Group (MCG) using LTE wireless access and a Secondary Cell Group (SCG) using NR wireless access, for MCG transmission, the terminal can pass the high-level The parameter p-MaxEUTRA configures the maximum power P _LTE . For SCG transmission, the terminal can configure the maximum power P _NR through the high-level parameter p- _NR . The terminal can use P _LTE as the MCG transmission power constraint. The terminal can use P _NR as the SCG transmission. Power constraints. The maximum transmission power of the terminal through the LTE network should be less than or equal to P _LTE , and the maximum transmission power of the terminal through the NR network should be less than or equal to P _NR . If the terminal has the capability of dynamic power sharing between the LTE network and the NR network, the base station and the terminal can communicate in both TDD working mode and FDD working mode; if the terminal does not have the dynamic power sharing capability of the LTE network and NR network, the base station And the terminal can use TDD working mode to communicate.

When the terminal uses the FDD working mode to send uplink signals, the information sent by the terminal through the MCG and the information sent by the terminal through the SCG overlap in the time domain, and the sum of the power of the terminal to send information through the MCG and the power of the terminal to send information through the SCG exceeds The maximum power limit of the terminal can reduce the power of the terminal sending information through the SCG, so that the sum of the power of the terminal sending information through the MCG and the power of the terminal sending information through the SCG does not exceed the maximum power limit of the terminal.

In the Rel-14, Rel-15 and Rel-16 versions of the "Third Generation Partnership Project", the Internet of Vehicles (V2X) as a major application of Device Through to Device (D2D) technology was successfully established . V2X is for side link communications. V2X will optimize the specific application requirements of V2X based on the existing D2D technology, further reduce the access delay of V2X equipment, and solve the resource conflict problem. As shown in FIG. 4, V2X may include vehicle-to-vehicle communication (V2V), vehicle-to-person communication (Vehicle to Pedestrian, V2P), and vehicle-to-infrastructure communication (Vehicle to Infrastructure) (V2I). Among them, V2I also includes the communication between vehicles and base stations or networks (Vehicle to Network, V2N). Infrastructure includes terminal-type infrastructure and base station-type infrastructure. Terminal-type infrastructure is deployed on the roadside and is in a non-mobile state. Mobility is not considered; base station infrastructure can provide timing synchronization, or resource scheduling, to the vehicles it communicates with.

When the terminal sends information on the uplink and the side link at the same time, the value of the "priority" field of the side link control information (Sidelink control information, SCI) that the terminal can transmit through the side link is compared with the threshold configured by the upper layer. Thereby, it is determined whether the information on the uplink or the side link is preferentially transmitted.

For example, if both the side link information and the uplink information are transmitted on the shared carrier spectrum, the terminal can indicate the level of the side link packet priority (ProSe Per-Packet Priority, PPPP) through SCI. If the level of PPPP is greater than the preset PPPP threshold value, the terminal may not transmit uplink information and preferentially transmit side link information; if the PPPP level is less than or equal to the preset PPPP threshold, the terminal may not transmit side link information and preferentially transmit uplink information.

For another example, if the side link information is transmitted in the dedicated carrier spectrum, the terminal may indicate the PPPP level through SCI. If the PPPP level is greater than the preset PPPP threshold, the terminal may not transmit uplink information or reduce the uplink transmit power , Prioritize the transmission of side link information; if the PPPP level is less than or equal to the preset PPPP threshold, the terminal may not transmit side link information or reduce the transmission power of the side link and preferentially transmit uplink information.

The above content mainly introduces the uplink power control method when the LTE network and the NR network are deployed at the same time, and the power control method when the terminal transmits information simultaneously on the uplink and the side link. Based on this, the present application provides a side link power control method and terminal, and provides a power sharing method for the terminal to send information through the first transmission link and the second transmission link, which can control the terminal through the first transmission link and The sum of the transmission power of the second transmission link does not exceed the maximum transmission power of the terminal.

As shown in FIG. 5, it is a schematic structural diagram of a communication system 500 provided by an embodiment of the present application. In FIG. 5, the communication system 500 includes base stations 501 to 502 and terminals 503 to 505.

The base stations 501 to 502 are used to provide wireless access services for the terminals 503 to 505. Specifically, each base station corresponds to a service coverage area (also called a cell, as shown by the elliptical areas in FIG. 5), and terminal devices entering this area can communicate with the base station through wireless signals to accept the base station Provide wireless access services. There may be overlap between the service coverage areas of the base stations, and terminals in the overlap area may receive wireless signals from multiple base stations, so multiple base stations may provide services to the terminal device at the same time. For example, multiple base stations may use coordinated multipoint (CoMP) technology to provide services for terminal devices in the overlapping area. For example, as shown in FIG. 5, the service coverage areas of the base station 501 and the base station 502 overlap, and the terminal 503 is within the overlapped area. Therefore, the base station 501 and the base station 502 can simultaneously serve the terminal 503, and the terminal 503 can The network provided by the base station 501 communicates with the terminal 504, and the terminal 503 can also communicate with the terminal 505 through the network provided by the base station 502.

The base station may be an eNB in Long Term Evolution (LTE) or an eNodeB (evolutional NodeB). The base station may also be a network device in a New Radio Interface (NR) or a network device in a future evolution network.

The terminal may be a portable computer (such as a mobile phone), a notebook computer, a personal computer (PC), a wearable electronic device (such as a smart watch), a tablet computer, augmented reality (augmented reality (AR)/virtual reality (virtual reality, VR) equipment, vehicles, car modules, car computers, car chips, car communication systems, wireless terminals in industrial control, etc.

It should be noted that the communication system 500 shown in FIG. 5 is only used for examples, and is not intended to limit the technical solutions of the present application. Those skilled in the art should understand that in the specific implementation process, the communication system 500 also includes other devices, and at the same time, the number of base stations and terminal devices can also be configured according to specific needs.

Optionally, each network element in FIG. 5 (for example, the base station 501 and the terminal 503) in the embodiment of the present application may be implemented by one device, or may be implemented by multiple devices together, or may be a functional module within a device. This embodiment of the present application does not specifically limit this. It can be understood that the above function may be a network element in a hardware device, or a software function running on dedicated hardware, or a virtualized function instantiated on a platform (for example, a cloud platform).

For example, in the embodiment of the present application, each network element in FIG. 5 may be implemented by the communication device in FIG. 6. FIG. 6 is a schematic diagram of a hardware structure of a communication device provided by an embodiment of the present application. The communication device 600 includes a processor 601, a communication line 602, a memory 603, and at least one communication interface 604 (only an example in FIG. 6 is explained by including the communication interface 604).

The processor 601 may be a general-purpose central processing unit (central processing unit, CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more used to control the execution of the program program of the present application integrated circuit.

The communication line 602 may include a path to transfer information between the above components.

Communication interface 604, using any device such as a transceiver, for communicating with other devices or communication networks, such as Ethernet, wireless access network (RAN), wireless local area network (WLAN), etc. .

The memory 603 may be a read-only memory (read-only memory, ROM) or other types of static storage devices that can store static information and instructions, random access memory (random access memory, RAM)

Or other types of dynamic storage devices that can store information and instructions can also be electrically erasable programmable read-only memory (electrically erasable programmable-read-only memory (EEPROM), compact disc-read-only memory (CD- ROM) or other optical disc storage, optical disc storage (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or can be used to carry or store forms with instructions or data structures The desired program code and any other media that can be accessed by the computer, but not limited to this. The memory may exist independently and be connected to the processor through the communication line 602. The memory can also be integrated with the processor.

The memory 603 is used to store computer execution instructions for executing the solution of the present application, and the processor 601 controls execution. The processor 601 is used to execute computer execution instructions stored in the memory 603, so as to implement the side link power control method provided in the following embodiments of the present application.

Optionally, the computer execution instructions in the embodiments of the present application may also be called application program codes, which are not specifically limited in the embodiments of the present application.

In a specific implementation, as an embodiment, the processor 601 may include one or more CPUs, such as CPU0 and CPU1 in FIG. 6.

In a specific implementation, as an embodiment, the communication device 600 may include multiple processors, such as the processor 601 and the processor 605 in FIG. 6. Each of these processors may be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor. The processor herein may refer to one or more devices, circuits, and/or processing cores for processing data (eg, computer program instructions).

The side link power control method provided by the embodiment of the present application will be specifically described below with reference to FIGS. 5 to 6.

It should be noted that the name of the message between the network elements or the name of each parameter in the message in the following embodiments of the present application is just an example, and other names may be used in the specific implementation, which is not specified in the embodiments of the present application. limited.

As shown in FIG. 7, a side link power control method provided by an embodiment of the present application is applied to a terminal. The side link power control method includes the following steps:

Step 701: Obtain a first maximum transmission power and a second maximum transmission power.

The first maximum transmission power is the maximum transmission power of the terminal sending the first information through the first transmission link, and the second maximum transmission power is the maximum transmission power of the terminal sending the second information through the second transmission link.

Optionally, the value range of the first maximum transmit power P _CMAX1 may be P _{CMAXL1 ≤P CMAX1 ≤P CMAXH1} , P _CMAXL1 =Min{P _EMAX -ΔT _C ,P _PowerClass -Max(MPR+AMPR+ΔT _IB + ΔT _C +ΔT _ProSe , PMPR), P _Regulatory }, P _CMAXH1 = Min{P _EMAX , P _PowerClass , P _Regulatory }, the value range of the second maximum transmit power P _CMAX2 may be PCMAXL1≤P _CMAX2 ≤PCMAXH1, PCMAXL1 =Min{P _EMAX -Δ, P _PowerClass -Δ, P _Regulatory }, PCMAXH1=Min{P _EMAX , P _PowerClass , P _Regulatory }, where P _{EMAX is} used to indicate the radio resource control RRC signaling configuration allowed by the terminal Maximum power, P _{PowerClass is} used to indicate the maximum power of the terminal defined according to the type of the terminal, MPR is used to indicate the power back-off parameter, AMPR is used to indicate the additional power back-off parameter, and PMPR is used to indicate the power back-off under specific conditions Back, P _{Regulatory is} used to represent the power parameters of the V2X terminal of vehicle-to-vehicle communication, ΔT _C , ΔT _IB , ΔT _ProSe and Δ are the range adjustment parameters. The terminal may select the value of the first maximum transmission power within the range of the first maximum transmission power, and the terminal may select the value of the second maximum transmission power within the range of the second maximum transmission power. It should be noted that, if the first transmission link and the second transmission link are transmitted on the same subband, considering the interference factor, the first transmission link and the second transmission link also need to consider additional AMPR.

Optionally, before step 701, the side link power control method may further include: acquiring a first initial power and a second initial power, where the first initial power is the terminal sending the first information through the first transmission link , The second initial power is the initial transmit power for the terminal to send the second information through the second transmission link. Wherein, the first transmission link may be a side link of LTE, and the second transmission link may be a side link of NR; or, the first transmission link may be a side link of NR, the second transmission The link may be a side link of LTE. Those skilled in the art may understand that the first transmission link and the second transmission link may also be other forms of links, and the specific forms of the first transmission link and the second transmission link are not limited in this application.

Optionally, the first initial power may be configured by the first base station, the first base station is the base station of the first transmission link; the second initial power may be configured by the second base station, the second base station is the The base station of the second transmission link.

Optionally, the first maximum transmit power is less than or equal to the first initial power, and the second maximum transmit power is less than or equal to the second initial power.

Optionally, the first maximum transmission power and the second maximum transmission power may also be determined according to the first initial power and the second initial power. For example, the value range of the first maximum transmit power P _CMAX1 may also be P _{CMAXL2 ≤P CMAX1 ≤P CMAXH2} , P _CMAXL2 =Min{P _EMAX -ΔT _C ,P _PowerClass -Max(MPR+AMPR+ΔT _IB +ΔT _{C + ΔT ProSe, PMPR), P} 1 -ΔT C, P Regulatory}, P CMAXH2 = Min {P EMAX, P PowerClass, P Regulatory, P 1}, the second maximum transmission power _P CMAX2 ranges may also be PCMAXL2≤P _CMAX2 ≤PCMAXH2, PCMAXL2=Min{P _EMAX -Δ, P _PowerClass -Δ, P ₂ -Δ, P _Regulatory }, PCMAXH2=Min{P _EMAX , P _PowerClass , P _Regulatory , P ₂ }, where, P _{1 is} used to represent the first initial power, and P _{2 is} used to represent the second initial power. P ₁ may be configured by the base station of the LTE network and sent to the terminal, and P ₂ may be configured by the base station of the NR network and sent to the terminal. The terminal may select the value of the first maximum transmission power within the range of the first maximum transmission power, and the terminal may select the value of the second maximum transmission power within the range of the second maximum transmission power. It should be noted that, if the first transmission link and the second transmission link are transmitted on the same subband, considering the interference factor, the first transmission link and the second transmission link also need to consider additional AMPR.

Step 702: If the terminal determines to use frequency division multiplexing to send the first information through the first transmission link and the second information through the second transmission link, according to the first maximum transmission power and the second maximum transmission power Calculate the first actual power and the second actual power.

The first actual power is the actual power that the terminal uses frequency division multiplexing to send the first information through the first transmission link, and the second actual power is the terminal that uses frequency division multiplexing through the second transmission link The actual power to send the second message.

Optionally, the terminal may calculate the first intermediate power through parameters configured by the upper layer of the first transmission link, transmission bandwidth, path loss, and some power adjustment information, and compare the first intermediate power with the first maximum transmit power The first actual power, for example, the minimum value between the first intermediate power and the first maximum transmit power may be determined as the first actual power; the terminal may use the parameters configured by the upper layer of the second transmission link, transmission bandwidth, path loss, and Some power adjustment information calculates the second intermediate power, and compares the second intermediate power with the second maximum transmit power to obtain the second actual power. For example, the minimum value of the second intermediate power and the second maximum transmit power can be determined Is the second actual power.

Optionally, if the sum of the first initial power and the second initial power is greater than the second power threshold, the terminal may determine to use time division multiplexing, code division multiplexing, or frequency division multiplexing to send the first One message, the second message is sent through the second transmission link. The second power threshold may be determined by P _PowerClass and/or P _EMAX . For example, the terminal may determine that the minimum value of P _PowerClass and P _EMAX is the second power threshold. Among them, P _{PowerClass is} used to indicate the maximum power of the terminal defined according to the type of the terminal, and P _{EMAX is} used to indicate the maximum power allowed by the terminal configured by radio resource control RRC signaling.

It should be noted that the first base station, the second base station, or the terminal may configure the multiplexing mode used by the terminal, for example, time division multiplexing mode, code division multiplexing mode, or frequency division multiplexing mode. The first base station is a base station of a first transmission link, and the second base station is a base station of a second transmission link.

Specifically, if the terminal determines to use time division multiplexing to send the first information through the first transmission link and the second information through the second transmission link, the terminal may use the first actual power to send through the first transmission link The first information may use the second actual power to send the second information through the second transmission link.

Specifically, if the terminal determines to use code division multiplexing to send the first information through the first transmission link and the second information through the second transmission link, the terminal may use the first actual power to pass through the first transmission link To send the first information, the second actual power may be used to send the second information through the second transmission link in an orthogonal manner to the first information. The orthogonality may be the orthogonality of the sequence, the orthogonality of the information, or other orthogonal manners .

Step 703: If the sum of the first actual power and the second actual power is greater than the first power threshold, determine the first final power and the second final power according to the first actual power and the second actual power.

The first final power is the final transmission power of the terminal sending the first information through the first transmission link, and the second final power is the final transmission power of the terminal sending the second information through the second transmission link.

Optionally, the first power threshold may be determined by at least one of P _PowerClass , P _EMAX, or P _FDM , and the first power threshold may be the same as or different from the second power threshold. For example, the terminal may determine the minimum value of P _PowerClass , P _EMAX, and P _FDM as the first power threshold, where P _{FDM is} used to indicate the maximum value of the terminal defined when the terminal uses frequency division multiplexing to send information power.

Specifically, if the terminal determines to use frequency division multiplexing to send the first information through the first transmission link and the second information through the second transmission link, and the sum of the first actual power and the second actual power is greater than the second A power threshold, the terminal may determine the first final power and the second final power according to the first actual power and the second actual power.

In a possible implementation, determining the first final power and the second final power according to the first actual power and the second actual power includes: reducing the second actual power, so that the first actual power and the reduced The sum of the second actual power is less than or equal to the first power threshold; it is determined that the first actual power is the first final power; and the reduced second actual power is determined as the second final power.

Further, as shown in FIG. 8, the side link power control method further includes steps 804 to 807.

Step 804: Obtain a first parameter, which is a parameter determined according to the quality of service QoS.

It should be noted that the first parameter may be various types of parameters, for example, the first parameter may be a PPPP level, and for example, the first parameter may be comprehensively mapped by the second base station according to 5G QoS characteristic parameters For another example, the first parameter may also be an index of a 5G QoS indicator (5G QoS Indicator, 5QI) parameter set.

If the first parameter is a PPPP level, the terminal may indicate the first parameter through SCI. The terminal pre-stores the correspondence between the first parameter, k priority levels corresponding to the first parameter, and k parameter thresholds corresponding to the k priority levels. In a specific implementation, the terminal may divide the first parameter into k priority levels, and pre-configure k parameter thresholds for the k priority levels of the first parameter; or, the terminal may give the first parameter a threshold The parameters are divided into k priority levels, and the second base station may configure k parameter thresholds for the k priority levels of the first parameter through high-layer signaling, where the second base station may be a base station of the second transmission link, the The higher layer signaling may be SIB signaling, MIB signaling or RRC signaling.

As shown in Table 1, the correspondence between the first parameter, the four priority levels corresponding to the first parameter, and the four parameter thresholds corresponding to the four priority levels are shown. Among them, PPPP1 and PPPP2 correspond to priority level 1, PPPP3 and PPPP4 correspond to priority level 2, PPPP5 and PPPP6 correspond to priority level 3, and PPPP7 and PPPP8 correspond to priority level 4. The threshold corresponding to priority level 1 is K ₁ dB, the threshold corresponding to priority level 2 is K ₂ dB, the threshold corresponding to priority level 3 is K ₃ dB, and the threshold corresponding to priority level 4 is K ₄ dB.

Table 1

If the first parameter is a value comprehensively mapped by the second base station according to the 5G QoS characteristic parameter, the second base station may send the first parameter comprehensively mapped according to the 5G QoS characteristic parameter to the terminal. The 5G QoS characteristic parameter includes the following At least one of the parameters: resource type resource type, priority priority level, packet delay budget (packet delay budget (PDB), packet loss rate (packet error (PER), average window averaging window, maximum data burst The volume of data (maximum data burst volume, MDBV) and the minimum required communication range minimum communication required range. The terminal pre-stores the correspondence between the first parameter, j priority levels corresponding to the first parameter, and j parameter thresholds corresponding to the j priority levels. In a specific implementation, the terminal may divide the first parameter into j priority levels, and pre-configure j parameter thresholds for the j priority levels of the first parameter; or, the terminal may give the first parameter The parameters are divided into j priority levels, and the second base station may configure j parameter thresholds for the j priority levels of the first parameter through high-layer signaling, where the second base station may be the base station of the second transmission link, the The higher layer signaling may be SIB signaling, MIB signaling or RRC signaling.

As shown in Table 2, the correspondence between the first parameter, the four priority levels corresponding to the first parameter, and the four parameter thresholds corresponding to the four priority levels are shown. Among them, 1 and 2 correspond to priority level 1, 3 and 4 correspond to priority level 2, 5 and 6 correspond to priority level 3, and 7 and 8 correspond to priority level 4. The threshold corresponding to priority level 1 is J ₁ dB, the threshold corresponding to priority level 2 is J ₂ dB, the threshold corresponding to priority level 3 is J ₃ dB, and the threshold corresponding to priority level 4 is J ₄ dB.

Table 2

Priority level 1	Priority level 2	Priority level 3	Priority level 4
1, 2	3, 4	5, 6	7, 8
J 1 dB	J 2 dB	J 3 dB	J 4 dB

If the first parameter is the index of the 5QI parameter set, the terminal may divide the 5QI parameter into q sets and assign an index number to each 5QI parameter set. Each 5QI parameter set may include a certain number of 5QI parameters, for example , The 5QI parameter set with index number 1 includes 5QI parameters {1, 2, 3, 4, 5}, and the 5QI parameter set with index number 2 includes 5QI parameters {65, 66, 67, 68, 69} . The terminal may indicate the first parameter through SCI. The terminal pre-stores a correspondence between the first parameter, q priority levels corresponding to the first parameter, and q parameter thresholds corresponding to the q priority levels. In a specific implementation manner, the terminal may pre-configure q parameter thresholds for the q priority levels of the first parameter; or, the second base station may configure the q priority levels of the first parameter through high-layer signaling q parameter thresholds, where the second base station may be a base station of a second transmission link, and the high-layer signaling may be SIB signaling, MIB signaling, or RRC signaling.

As shown in Table 3, the correspondence between the first parameter, the six priority levels corresponding to the first parameter, and the six parameter thresholds corresponding to the six priority levels are shown. Among them, the threshold corresponding to priority level 1 is Q ₁ dB, the threshold corresponding to priority level 2 is Q ₂ dB, the threshold corresponding to priority level 3 is Q ₃ dB, and the threshold corresponding to priority level 4 is Q ₄ dB, The threshold corresponding to priority level 5 is Q ₅ dB, and the threshold corresponding to priority level 6 is Q ₆ dB.

table 3

Step 805: Obtain the first priority level corresponding to the first parameter.

Step 806: Obtain the first difference.

It should be noted that the first difference may be various types of differences, for example, the first difference may be the difference between the second actual power and the second final power, and for example, the first difference It may also be the difference between the power spectral density (PSD) of the first transmission link and the PSD of the second transmission link.

Optionally, if the first difference is the difference between the PSD of the first transmission link and the PSD of the second transmission link, before step 806, the method further includes: acquiring the PSD of the first transmission link and the PSD of the second transmission link PSD.

Optionally, the terminal may obtain the PSD of the first transmission link according to the high-level configuration of the first transmission link, link channel state information, power adjustment information, etc.; the terminal may according to the high-level configuration of the second transmission link , Link channel state information, power adjustment information, etc. to obtain the PSD of the second transmission link.

Step 807: If the first difference is greater than or equal to the first parameter threshold corresponding to the first priority level, the terminal stops sending the second information.

The first parameter threshold is a parameter threshold preset by the terminal or a parameter threshold configured by higher layer signaling. The high layer signaling is system information block SIB signaling, master information block MIB signaling, or radio resource control RRC signaling.

It should be noted that the terminal stops sending the second information to indicate that the terminal stops sending the second information before sending the second information, that is, the terminal does not send the second information.

Exemplarily, if the first parameter acquired by the terminal is PPPP3, according to Table 1, the first priority level corresponding to PPPP3 is priority level 2, and the threshold value of the first parameter corresponding to priority level 2 is K ₂ dB. A difference is greater than or equal to K ₂ dB, the terminal stops sending the second information, that is, the terminal uses the first final power to send the first information through the first transmission link, and the terminal does not send the second information; if the first A difference is less than K ₂ dB, the terminal uses the first final power to send the first information through the first transmission link, and uses the second final power to send the second information through the second transmission link.

Exemplarily, if the first parameter comprehensively mapped by the second base station according to the 5G QoS characteristic parameter is 5, according to Table 2, the first priority level corresponding to 5 is priority level 3, and the first parameter corresponding to priority level 3 The threshold is J ₃ dB. If the first difference is greater than or equal to J ₃ dB, the terminal stops sending the second information, that is, the terminal uses the first final power to send the first information through the first transmission link, and the terminal does not Sending the second information; if the first difference is less than J ₃ dB, the terminal uses the first final power to send the first information through the first transmission link, and uses the second final power to send the second information through the second transmission link.

Exemplarily, if the first parameter acquired by the terminal is 2, according to Table 3, the first priority level corresponding to 2 is priority level 2, and the threshold value of the first parameter corresponding to priority level 2 is Q ₂ dB. A difference is greater than or equal to Q ₂ dB, the terminal stops sending the second information, that is, the terminal uses the first final power to send the first information through the first transmission link, and the terminal does not send the second information; if the first A difference is less than Q ₂ dB, the terminal uses the first final power to send the first information through the first transmission link, and uses the second final power to send the second information through the second transmission link.

In another possible implementation manner, determining the first final power and the second final power according to the first actual power and the second actual power includes: if the terminal sends the second information through the second transmission link Reduce the first actual power prior to the first information sent by the terminal through the first transmission link in the time domain, so that the sum of the reduced first actual power and second actual power is less than or equal to the first power threshold; It is determined that the reduced first actual power is the first final power; the second actual power is determined to be the second final power; or, if the first information sent by the terminal through the first transmission link is ahead of the terminal in the time domain The second information sent through the second transmission link reduces the second actual power so that the sum of the first actual power and the reduced second actual power is less than or equal to the first power threshold; it is determined that the first actual power is the first Final power; it is determined that the reduced second actual power is the second final power.

Further, as shown in FIGS. 9A and 9B, the side link power control method further includes steps 908-step 910 or steps 911-step 914.

Step 908: Acquire the second priority level of the terminal.

The second priority level is the priority level of the first information sent by the terminal through the first transmission link. The second priority level is a priority level determined according to QoS.

Exemplarily, the second priority level of the terminal may be a PPPP level, and the terminal may indicate the second priority level through SCI. The terminal pre-stores the correspondence between the priority levels of the p first information and the p parameter thresholds corresponding to the priority levels of the p first information. In a specific implementation manner, the terminal may configure p parameter thresholds for the priority levels of p first information; or, the first base station may configure p parameters for the priority levels of p first information through high-layer signaling Threshold, where the first base station may be a base station of a first transmission link, and the high-layer signaling may be SIB signaling, MIB signaling, or RRC signaling.

As shown in Table 4, the priority relationship between the eight priority levels of the first information and the eight parameter thresholds corresponding to the eight priority levels of the first information is shown. The threshold corresponding to PPPP1 is P ₁ dB, the threshold corresponding to PPPP2 is P ₂ dB, the threshold corresponding to PPPP3 is P ₃ dB, the threshold corresponding to PPPP4 is P ₄ dB, the threshold corresponding to PPPP5 is P ₅ dB, and the threshold corresponding to PPPP6 It is P ₆ dB, the threshold corresponding to PPPP7 is P ₇ dB, and the threshold corresponding to PPPP8 is P ₈ dB.

Table 4

PPPP1	PPPP2	PPPP3	PPPP4	PPPP5	PPPP6	PPPP7	PPPP8
P 1 dB	P 2 dB	P 3 dB	P 4 dB	P 5 dB	P 6 dB	P 7 dB	P 8 dB

Step 909: Obtain the second difference.

The second difference is the difference between the first actual power and the first final power.

Step 910: If the second difference is greater than or equal to the second parameter threshold corresponding to the second priority level, the terminal stops sending the first information.

Optionally, the second parameter threshold is a parameter threshold preset by the terminal or a parameter threshold configured by high-layer signaling, and the high-layer signaling is SIB signaling, MIB signaling, or RRC signaling.

It should be noted that the terminal stops sending the first information to indicate that the terminal stops sending the first information before sending the first information, that is, the terminal does not send the first information.

Exemplarily, if the second priority level acquired by the terminal is PPPP1, according to Table 4, the second parameter threshold corresponding to PPPP1 is P ₁ dB, and if the second difference is greater than or equal to P ₁ dB, the terminal stops sending the First information, that is, the terminal uses the second final power to send the second information through the second transmission link, and the terminal does not send the first information; if the first difference is less than P ₁ dB, the terminal uses the first final power The first information is sent over the first transmission link, and the second information is sent over the second transmission link using the second final power.

Step 911: Acquire a third parameter, which is a parameter determined according to QoS.

Exemplarily, the third parameter may be a value comprehensively mapped by the second base station according to the 5G QoS characteristic parameter, and the second base station may send the third parameter comprehensively mapped according to the 5G QoS characteristic parameter to the terminal, the 5G QoS The characteristic parameters include at least one of the following parameters: resource type, priority level, PDB, PER, averaging window, MDBV, and minimum required communication range. The terminal pre-stores a correspondence between the third parameter, r priority levels corresponding to the third parameter, and r parameter thresholds corresponding to the r priority levels. In a specific implementation, the terminal may divide r priority levels for the third parameter, and pre-configure r parameter thresholds for the r priority levels of the third parameter; or, the terminal may give the third parameter The parameters are divided into r priority levels, and the second base station may configure r parameter thresholds for the r priority levels of the third parameter through high-layer signaling, where the second base station may be the base station of the second transmission link, the The higher layer signaling may be SIB signaling, MIB signaling or RRC signaling.

As shown in Table 5, the correspondence between the third parameter, the four priority levels corresponding to the third parameter, and the four parameter thresholds corresponding to the four priority levels are shown. Among them, 1 and 2 correspond to priority level 1, 3 and 4 correspond to priority level 2, 5 and 6 correspond to priority level 3, and 7 and 8 correspond to priority level 4. The threshold corresponding to priority level 1 is R ₁ dB, the threshold corresponding to priority level 2 is R ₂ dB, the threshold corresponding to priority level 3 is R ₃ dB, and the threshold corresponding to priority level 4 is R ₄ dB.

table 5

Priority level 1	Priority level 2	Priority level 3	Priority level 4
1, 2	3, 4	5, 6	7, 8
R 1 dB	R 2 dB	R 3 dB	R 4 dB

Step 912: Acquire a third priority level corresponding to the third parameter.

Step 913: Obtain a third difference value, where the third difference value is the difference between the second actual power and the second final power.

Step 914: If the third difference is greater than or equal to the third parameter threshold corresponding to the third priority level, the terminal stops sending the second information.

Optionally, the third parameter threshold is a parameter threshold preset by the terminal or a parameter threshold configured by high-layer signaling, and the high-layer signaling is SIB signaling, MIB signaling, or RRC signaling.

It should be noted that the terminal stops sending the second information to indicate that the terminal stops sending the second information before sending the second information, that is, the terminal does not send the second information.

Exemplarily, if the third parameter comprehensively mapped by the second base station according to the 5G QoS characteristic parameter is 6, according to Table 5, the third priority level corresponding to 6 is priority level 3, and the third parameter corresponding to priority level 3 The threshold is R ₃ dB. If the third difference is greater than or equal to R ₃ dB, the terminal stops sending the second information, that is, the terminal uses the first final power to send the first information through the first transmission link, and the terminal does not Sending the second information; if the third difference is less than R ₃ dB, the terminal uses the first final power to send the first information through the first transmission link, and uses the second final power to send the second information through the second transmission link.

As shown in FIG. 10, the subcarrier interval of the first transmission link is 15KHz, the subcarrier interval of the second transmission link is 60KHz, the first transmission link is the side link of LTE, and the second transmission link is NR For the side link, since the first time slot of the second transmission link precedes the first subframe of the first transmission link in the time domain, if the terminal is in the first subframe and the first subframe of the first transmission link The first time slot of the second transmission link sends information, and the sum of the actual power of the first transmission link and the actual power of the second transmission link is greater than the first power threshold, so the actual power of the first transmission link must be reduced. Since the first subframe of the first transmission link precedes the 2-4th time slot of the second transmission link in the time domain, if the terminal is in the 2-4th time slot of the second transmission link Send information, and the sum of the actual power of the first transmission link and the actual power of the second transmission link is greater than the first power threshold, to reduce the actual power of the second transmission link, in the entire transmission process, the first transmission The final power of the information sent in the first subframe of the link must be consistent.

As shown in FIG. 11, another side link power control method provided by an embodiment of the present application is applied to a terminal, and the side link power control method includes the following steps:

Step 1101, if the terminal determines to use frequency division multiplexing to send the first information through the first transmission link and the second information through the second transmission link, to obtain the first priority level of the terminal.

The first priority level is a priority level determined according to QoS.

Optionally, the first priority level of the terminal may be a PPPP level, and the terminal may indicate the first priority level through SCI. For example, the terminal may indicate that the first priority level is one of PPPP1-PPPP8 through SCI.

Step 1102: Obtain a first parameter, which is a parameter determined according to QoS.

The first parameter may be a value comprehensively mapped by the second base station according to the 5G QoS characteristic parameter. The second base station may send the first parameter comprehensively mapped according to the 5G QoS characteristic parameter to the terminal. The 5G QoS characteristic parameter includes the following At least one of the parameters: resource type, priority level, PDB, PER, averaging window, MDBV, and minimum required communication range. The terminal pre-stores the correspondence between the first parameter and the r priority levels corresponding to the first parameter.

As shown in Table 6, the corresponding relationship between the first parameter and the eight priority levels corresponding to the first parameter is shown. Among them, 1 and 2 correspond to priority level 1, 3 and 4 correspond to priority level 2, 5 and 6 correspond to priority level 3, 7 and 8 correspond to priority level 4, 9 and 10 correspond to priority level 5, 11 and 12 correspond to priority level 6, 13 and 14 correspond to priority level 7, 15 and 16 correspond to priority level 8.

Table 6

Step 1103: Acquire a second priority level corresponding to the first parameter.

Step 1104: Determine the first reserved power and the second reserved power according to the first priority level and the second priority level.

The first reserved power is the lowest transmission power for the terminal to send the first information through the first transmission link, and the second reserved power is the lowest transmission power for the terminal to send the second information through the second transmission link.

In a possible implementation, determining the first reserved power and the second reserved power according to the first priority level and the second priority level includes: according to the first priority level and the second priority The level determines the ratio of the first reserved power to the first power threshold m and the second reserved power to the first power threshold n, where m+n≤1, 0<m<1, 0<n<1 ; Determine the first reserved power and the second reserved power according to the first power threshold, m and n.

It should be noted that the first power threshold may be determined according to P _PowerClass , P _EMAX and P _FDM . For example, the first power threshold may be the minimum value among P _PowerClass , P _EMAX and P _FDM , where P _{PowerClass is} used for It indicates the maximum power of the terminal defined according to the type of the terminal, P _{EMAX is} used to indicate the maximum power allowed by the terminal configured by RRC signaling, and P _{FDM is} used to indicate that the terminal is defined when sending information using frequency division multiplexing The maximum power of the terminal.

Optionally, if the priority levels of the first priority level and the second priority level are the same, m may be 0.5 and n may be 0.5. For example: if the first priority level is PPPP3 and the second priority level is priority level 3, m is 0.5 and n is 0.5.

Optionally, if the priority levels of the first priority level and the second priority level are different, m and n may be determined according to the level difference between the first priority level and the second priority level. For example: if the first priority level is PPPP4 and the second priority level is priority level 6, then m is 0.6 and n is 0.4.

Optionally, if the priority levels of the first priority level and the second priority level are greater than the priority level threshold, the sum of m and n may be less than 1. For example: if the first priority level is PPPP7, the second priority level is priority level 8, the first priority level and the second priority level are both greater than the priority level threshold of 5, then m is 0.2 and n is 0.1.

Further, the determining the proportion m of the first reserved power to the first power threshold and the proportion n the second reserved power to the first power threshold according to the first priority level and the second priority level include: The ratio m of the first reserved power to the first power threshold and the ratio n of the second reserved power to the first power threshold are determined according to the difference between the first priority level and the second priority level.

Optionally, the terminal pre-stores m and n corresponding to the difference between the first priority level and the second priority level, the terminal may determine according to the difference between the first priority level and the second priority level m and n.

As shown in Table 7, the correspondence between the difference between the first priority level and the second priority level and m, n is shown. The first priority level may be one of PPPP1-PPPP8, and the second priority level may be one of priority level 1 to priority level 8. The table corresponding to the first priority level and the second priority level in Table 7 is the value of m, n. For example, if the first priority level is PPPP5 and the second priority level is priority level 1, then m is 0.2 and n is 0.8. For another example, if the first priority level is PPPP7, the second priority level is priority level 6, m is 0.4, and n is 0.6.

Table 7

In another possible implementation manner, determining the first reserved power and the second reserved power according to the first priority level and the second priority level includes: according to the first priority level and the second The priority level, the first priority level threshold corresponding to the first priority level and the second priority level threshold corresponding to the second priority level determine the ratio of the first reserved power to the first power threshold m and the second The ratio of reserved power to the first power threshold n, where 0<m<1, 0<n<1, 0<m<1; the first reserved power and the first power threshold are determined according to the first power threshold, m and n 2. Reserve power.

It should be noted that the first power threshold may be determined by at least one of P _PowerClass , P _EMAX, and P _FDM . For example, the first power threshold may be the minimum value of P _PowerClass , P _EMAX, and P _FDM , where, P _{PowerClass is} used to indicate the maximum power of the terminal defined according to the type of the terminal, P _{EMAX is} used to indicate the maximum power allowed by the terminal configured by RRC signaling, and P _{FDM is} used to indicate that the terminal uses frequency division multiplexing to transmit The maximum power of the terminal defined in the information.

It should be noted that the first priority level threshold and the second priority level threshold may be thresholds preset by the terminal or configured by high-level signaling, and the high-level signaling is SIB signaling or MIB signaling Or RRC signaling.

Optionally, the terminal may determine the ratio m of the first reserved power to the first power threshold according to the difference between the first priority level and the threshold of the first priority level, and the terminal may determine the ratio of the second priority level to the second priority The difference of the level threshold determines the ratio n of the second reserved power to the first power threshold.

Further, the first priority level may be one of PPPP1-PPPP8, and the second priority level may be one of priority level 1 to priority level 7. The terminal may be based on the first priority level and the first The difference of the priority level threshold determines the proportion m of the first reserved power to the first power threshold, the terminal may determine the second reserved power to occupy the first power threshold according to the difference between the second priority level and the second priority level threshold Of the ratio n.

Exemplarily, if the first priority level is PPPP2, the second priority level is priority level 2, the first priority level threshold is PPPP4, the second priority level threshold is priority level 3, and the first priority level It is different from the first priority level threshold by 2 levels, and the second priority level and the second priority level threshold are different by 1 level. You can set m to 0.5 and n to 0.3.

Optionally, if the sum of the first actual power and the second actual power is greater than the first power threshold, the terminal may reduce the first actual power so that the sum of the reduced first actual power and the second actual power is less than or equal to the A power threshold, and the reduced first actual power is greater than or equal to the first reserved power.

Optionally, if the sum of the first actual power and the second actual power is greater than the first power threshold, the terminal may reduce the second actual power so that the sum of the first actual power and the reduced second actual power is less than or equal to the first A power threshold, and the reduced second actual power is greater than or equal to the second reserved power.

It can be understood that, in order to realize the above-mentioned functions, the above-mentioned terminal or the like includes a hardware structure and/or a software module corresponding to each function. Those skilled in the art should be easily aware that, in conjunction with the exemplary units and algorithm steps described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is performed by hardware or computer software driven hardware depends on the specific application of the technical solution and design constraints. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

In the embodiments of the present application, the above-mentioned terminals may be divided into function modules according to the above method examples. For example, each function module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The above integrated modules can be implemented in the form of hardware or software function modules. It should be noted that the division of the modules in the embodiments of the present application is schematic, and is only a division of logical functions. In actual implementation, there may be another division manner.

For example, in a case where the functional modules are divided in an integrated manner, FIG. 12 shows a schematic structural diagram of a terminal 120. The terminal 120 includes an acquisition module 1201, a calculation module 1202, and a determination module 1203. The obtaining module 1201 is configured to obtain a first maximum transmission power and a second maximum transmission power, where the first maximum transmission power is the maximum transmission power of the terminal sending the first information through the first transmission link, and the second maximum transmission power is the The terminal transmits the maximum transmit power of the second information through the second transmission link; the calculation module 1202 is configured to send the first information through the first transmission link and the second transmission link if the terminal determines to use frequency division multiplexing Send second information, calculate the first actual power and the second actual power according to the first maximum transmission power and the second maximum transmission power, the first actual power is the terminal using frequency division multiplexing through the first transmission chain The actual power of the first information sent by the channel, and the second actual power is the actual power of the terminal using frequency division multiplexing to send the second information through the second transmission link; the determination module 1203 is used to determine if the first actual power and The sum of the second actual power is greater than the first power threshold, and the first final power and the second final power are determined according to the first actual power and the second actual power, and the first final power is sent by the terminal through the first transmission link The final transmit power of the first information, the second final power is the final transmit power of the terminal sending the second information through the second transmission link.

It should be noted that the first transmission link may be a side link of LTE, and the second transmission link may be a side link of NR; or, the first transmission link may be a side link of NR, the The second transmission link may be a side link of LTE. Those skilled in the art may understand that the first transmission link and the second transmission link may also be other forms of links, and the specific forms of the first transmission link and the second transmission link are not limited in this application.

Exemplarily, the value range of the first maximum transmit power P _CMAX1 may be P _{CMAXL1 ≤P CMAX1 ≤P CMAXH1} , P _CMAXL1 =Min{P _EMAX -ΔT _C ,P _PowerClass -Max(MPR+AMPR+ΔT _IB + ΔT _C +ΔT _ProSe , PMPR), P _Regulatory }, P _CMAXH1 = Min{P _EMAX , P _PowerClass , P _Regulatory }, the value range of the second maximum transmit power P _CMAX2 may be PCMAXL1≤P _CMAX2 ≤PCMAXH1, PCMAXL1 =Min{P _EMAX -Δ, P _PowerClass -Δ, P _Regulatory }, PCMAXH1=Min{P _EMAX , P _PowerClass , P _Regulatory }, where P _{EMAX is} used to indicate the radio resource control RRC signaling configuration allowed by the terminal Maximum power, P _{PowerClass is} used to indicate the maximum power of the terminal defined according to the type of the terminal, MPR is used to indicate the power back-off parameter, AMPR is used to indicate the additional power back-off parameter, and PMPR is used to indicate the power back-off under specific conditions Back, P _{Regulatory is} used to represent the power parameters of the V2X terminal of vehicle-to-vehicle communication, ΔT _C , ΔT _IB , ΔT _ProSe and Δ are the range adjustment parameters. The terminal may select the value of the first maximum transmission power within the range of the first maximum transmission power, and the terminal may select the value of the second maximum transmission power within the range of the second maximum transmission power. It should be noted that, if the first transmission link and the second transmission link are transmitted on the same subband, considering the interference factor, the first transmission link and the second transmission link also need to consider additional AMPR.

Exemplarily, the first maximum transmission power and the second maximum transmission power may also be determined according to the first initial power and the second initial power. For example, the value range of the first maximum transmit power P _CMAX1 may also be P _{CMAXL2 ≤P CMAX1 ≤P CMAXH2} , P _CMAXL2 =Min{P _EMAX -ΔT _C ,P _PowerClass -Max(MPR+AMPR+ΔT _IB +ΔT _{C + ΔT ProSe, PMPR), P} 1 -ΔT C, P Regulatory}, P CMAXH2 = Min {P EMAX, P PowerClass, P Regulatory, P 1}, the second maximum transmission power _P CMAX2 ranges may also be PCMAXL2≤P _CMAX2 ≤PCMAXH2, PCMAXL2=Min{P _EMAX -Δ, P _PowerClass -Δ, P ₂ -Δ, P _Regulatory }, PCMAXH2=Min{P _EMAX , P _PowerClass , P _Regulatory , P ₂ }, where, P _{1 is} used to represent the first initial power, and P _{2 is} used to represent the second initial power. P ₁ may be configured by the base station of the LTE network and sent to the terminal, and P ₂ may be configured by the base station of the NR network and sent to the terminal. The terminal may select the value of the first maximum transmission power within the range of the first maximum transmission power, and the terminal may select the value of the second maximum transmission power within the range of the second maximum transmission power. It should be noted that, if the first transmission link and the second transmission link are transmitted on the same subband, considering the interference factor, the first transmission link and the second transmission link also need to consider additional AMPR.

Exemplarily, the terminal may calculate the first intermediate power through parameters configured by the upper layer of the first transmission link, transmission bandwidth, path loss, and some power adjustment information, and compare the first intermediate power with the first maximum transmit power The first actual power, for example, the minimum value between the first intermediate power and the first maximum transmit power may be determined as the first actual power; the terminal may use the parameters configured by the upper layer of the second transmission link, transmission bandwidth, path loss, and Some power adjustment information calculates the second intermediate power, and compares the second intermediate power with the second maximum transmit power to obtain the second actual power. For example, the minimum value of the second intermediate power and the second maximum transmit power can be determined Is the second actual power.

Optionally, the determining module 1203 is specifically configured to: reduce the second actual power so that the sum of the first actual power and the reduced second actual power is less than or equal to the first power threshold; determine that the first actual power is the first final power ; Determine that the reduced second actual power is the second final power.

Optionally, as shown in FIG. 13, the terminal 120 further includes a stop module 1204. The obtaining module 1201 is also used to obtain the first parameter, which is a parameter determined according to the quality of service QoS; the obtaining module 1201 is also used to obtain the first priority level corresponding to the first parameter; the obtaining module 1201, also Used to obtain a first difference value, the first difference value is the difference between the second actual power and the second final power; the stop module 1204 is used if the first difference value is greater than or equal to the corresponding value of the first priority level The first parameter threshold, the terminal stops sending the second information.

It should be noted that the first parameter may be various types of parameters, for example, the first parameter may be a PPPP level, and for example, the first parameter may be comprehensively mapped by the second base station according to 5G QoS characteristic parameters For another example, the first parameter may also be an index of a 5G QoS indicator (5G QoS Indicator, 5QI) parameter set.

If the first parameter is a PPPP level, the terminal may indicate the first parameter through SCI. The terminal pre-stores the correspondence between the first parameter, k priority levels corresponding to the first parameter, and k parameter thresholds corresponding to the k priority levels. In a specific implementation, the terminal may divide the first parameter into k priority levels, and pre-configure k parameter thresholds for the k priority levels of the first parameter; or, the terminal may give the first parameter a threshold The parameters are divided into k priority levels, and the second base station may configure k parameter thresholds for the k priority levels of the first parameter through high-layer signaling, where the second base station may be a base station of the second transmission link, the The higher layer signaling may be SIB signaling, MIB signaling or RRC signaling.

As shown in Table 8, the correspondence between the first parameter, the four priority levels corresponding to the first parameter, and the four parameter thresholds corresponding to the four priority levels are shown. Among them, PPPP1 and PPPP2 correspond to priority level 1, PPPP3 and PPPP4 correspond to priority level 2, PPPP5 and PPPP6 correspond to priority level 3, and PPPP7 and PPPP8 correspond to priority level 4. The threshold corresponding to priority level 1 is K ₁ dB, the threshold corresponding to priority level 2 is K ₂ dB, the threshold corresponding to priority level 3 is K ₃ dB, and the threshold corresponding to priority level 4 is K ₄ dB.

Table 8

If the first parameter is a value comprehensively mapped by the second base station according to the 5G QoS characteristic parameter, the second base station may send the first parameter comprehensively mapped according to the 5G QoS characteristic parameter to the terminal. The 5G QoS characteristic parameter includes the following At least one of the parameters: resource type, priority level, PDB, PER, averaging window, MDBV, and minimum required communication range. The terminal pre-stores the correspondence between the first parameter, j priority levels corresponding to the first parameter, and j parameter thresholds corresponding to the j priority levels. In a specific implementation, the terminal may divide the first parameter into j priority levels, and pre-configure j parameter thresholds for the j priority levels of the first parameter; or, the terminal may give the first parameter The parameters are divided into j priority levels, and the second base station may configure j parameter thresholds for the j priority levels of the first parameter through high-layer signaling, where the second base station may be the base station of the second transmission link, the The higher layer signaling may be SIB signaling, MIB signaling or RRC signaling.

As shown in Table 9, the correspondence between the first parameter, the four priority levels corresponding to the first parameter, and the four parameter thresholds corresponding to the four priority levels are shown. Among them, 1 and 2 correspond to priority level 1, 3 and 4 correspond to priority level 2, 5 and 6 correspond to priority level 3, and 7 and 8 correspond to priority level 4. The threshold corresponding to priority level 1 is J ₁ dB, the threshold corresponding to priority level 2 is J ₂ dB, the threshold corresponding to priority level 3 is J ₃ dB, and the threshold corresponding to priority level 4 is J ₄ dB.

Table 9

Priority level 1	Priority level 2	Priority level 3	Priority level 4
1, 2	3, 4	5, 6	7, 8
J 1 dB	J 2 dB	J 3 dB	J 4 dB

If the first parameter is the index of the 5QI parameter set, the terminal may divide the 5QI parameter into q sets and assign an index number to each 5QI parameter set. Each 5QI parameter set may include a certain number of 5QI parameters, for example , The 5QI parameter set with index number 1 includes 5QI parameters {1, 2, 3, 4, 5}, and the 5QI parameter set with index number 2 includes 5QI parameters {65, 66, 67, 68, 69} . The terminal may indicate the first parameter through SCI. The terminal pre-stores a correspondence between the first parameter, q priority levels corresponding to the first parameter, and q parameter thresholds corresponding to the q priority levels. In a specific implementation manner, the terminal may pre-configure q parameter thresholds for the q priority levels of the first parameter; or, the second base station may configure the q priority levels of the first parameter through high-layer signaling q parameter thresholds, where the second base station may be a base station of a second transmission link, and the high-layer signaling may be SIB signaling, MIB signaling, or RRC signaling.

As shown in Table 10, the correspondence between the first parameter, the six priority levels corresponding to the first parameter, and the six parameter thresholds corresponding to the six priority levels are shown. Among them, the threshold corresponding to priority level 1 is Q ₁ dB, the threshold corresponding to priority level 2 is Q ₂ dB, the threshold corresponding to priority level 3 is Q ₃ dB, and the threshold corresponding to priority level 4 is Q ₄ dB, The threshold corresponding to priority level 5 is Q ₅ dB, and the threshold corresponding to priority level 6 is Q ₆ dB.

Table 10

Exemplarily, if the first parameter acquired by the terminal is PPPP3, according to Table 8, the first priority level corresponding to PPPP3 is priority level 2, and the threshold value of the first parameter corresponding to priority level 2 is K ₂ dB. A difference is greater than or equal to K ₂ dB, the terminal stops sending the second information, that is, the terminal uses the first final power to send the first information through the first transmission link, and the terminal does not send the second information; if the first A difference is less than K ₂ dB, the terminal uses the first final power to send the first information through the first transmission link, and uses the second final power to send the second information through the second transmission link.

Exemplarily, if the second base station comprehensively maps the first parameter according to the 5G QoS characteristic parameter as 5, according to Table 9, the first priority level corresponding to 5 is priority level 3, and the first parameter corresponding to priority level 3 is The threshold is J ₃ dB. If the first difference is greater than or equal to J ₃ dB, the terminal stops sending the second information, that is, the terminal uses the first final power to send the first information through the first transmission link, and the terminal does not Sending the second information; if the first difference is less than J ₃ dB, the terminal uses the first final power to send the first information through the first transmission link, and uses the second final power to send the second information through the second transmission link.

Exemplarily, if the first parameter acquired by the terminal is 2, according to Table 10, the first priority level corresponding to 2 is priority level 2, and the threshold value of the first parameter corresponding to priority level 2 is Q ₂ dB. A difference is greater than or equal to Q ₂ dB, the terminal stops sending the second information, that is, the terminal uses the first final power to send the first information through the first transmission link, and the terminal does not send the second information; if the first A difference is less than Q ₂ dB, the terminal uses the first final power to send the first information through the first transmission link, and uses the second final power to send the second information through the second transmission link.

It should be noted that the first difference may be various types of differences, for example, the first difference may be the difference between the second actual power and the second final power, and for example, the first difference It may also be the difference between the PSD of the first transmission link and the PSD of the second transmission link.

Optionally, if the first difference is the difference between the PSD of the first transmission link and the PSD of the second transmission link, before step 806, the method further includes: acquiring the PSD of the first transmission link and the PSD of the second transmission link PSD.

Optionally, the terminal may obtain the PSD of the first transmission link according to the high-level configuration of the first transmission link, link channel state information, power adjustment information, etc.; the terminal may according to the high-level configuration of the second transmission link , Link channel state information, power adjustment information, etc. to obtain the PSD of the second transmission link.

It should be noted that the terminal stops sending the second information to indicate that the terminal stops sending the second information before sending the second information, that is, the terminal does not send the second information.

Optionally, the determination module 1203 is further specifically configured to reduce the second information if the second information sent by the terminal through the second transmission link precedes the first information sent by the terminal through the first transmission link in the time domain. An actual power, such that the sum of the reduced first actual power and the second actual power is less than or equal to the first power threshold; determining that the reduced first actual power is the first final power; determining that the second actual power is the second final power Power; or, if the first information sent by the terminal through the first transmission link precedes the second information sent by the terminal through the second transmission link in the time domain, the second actual power is reduced so that the first The sum of the actual power and the reduced second actual power is less than or equal to the first power threshold; determining that the first actual power is the first final power; and determining that the reduced second actual power is the second final power.

Optionally, the obtaining module 1201 is also used to obtain a second priority level of the terminal, the second priority level is a priority level determined according to QoS; the obtaining module 1201 is also used to obtain a second difference value, the The second difference is the difference between the first actual power and the first final power; the stopping module 1204 is further used to stop sending the second parameter if the second difference is greater than or equal to the second parameter threshold corresponding to the second priority level Information; or, the obtaining module 1201 is also used to obtain a third parameter, which is a parameter determined according to QoS; the obtaining module 1201 is also used to obtain a third priority level corresponding to the third parameter; the obtaining module 1201, also used to obtain a third difference, the third difference is the difference between the second actual power and the second final power. The stopping module 1204 is further configured to stop sending the second information if the third difference is greater than or equal to the third parameter threshold corresponding to the third priority level.

Exemplarily, the second priority level of the terminal may be a PPPP level, and the terminal may indicate the second priority level through SCI. The terminal pre-stores the correspondence between the priority levels of the p first information and the p parameter thresholds corresponding to the priority levels of the p first information. In a specific implementation manner, the terminal may configure p parameter thresholds for the priority levels of p first information; or, the first base station may configure p parameters for the priority levels of p first information through high-layer signaling Threshold, where the first base station may be a base station of a first transmission link, and the high-layer signaling may be SIB signaling, MIB signaling, or RRC signaling.

As shown in Table 11, the corresponding relationship between the eight priority levels of the first information and the eight parameter thresholds corresponding to the eight priority levels of the first information is shown. The threshold corresponding to PPPP1 is P ₁ dB, the threshold corresponding to PPPP2 is P ₂ dB, the threshold corresponding to PPPP3 is P ₃ dB, the threshold corresponding to PPPP4 is P ₄ dB, the threshold corresponding to PPPP5 is P ₅ dB, and the threshold corresponding to PPPP6 It is P ₆ dB, the threshold corresponding to PPPP7 is P ₇ dB, and the threshold corresponding to PPPP8 is P ₈ dB.

Table 11

PPPP1	PPPP2	PPPP3	PPPP4	PPPP5	PPPP6	PPPP7	PPPP8
P 1 dB	P 2 dB	P 3 dB	P 4 dB	P 5 dB	P 6 dB	P 7 dB	P 8 dB

Exemplarily, if the second priority level acquired by the terminal is PPPP1, according to Table 11, the second parameter threshold corresponding to PPPP1 is P ₁ dB, and if the second difference is greater than or equal to P ₁ dB, the terminal stops sending the First information, that is, the terminal uses the second final power to send the second information through the second transmission link, and the terminal does not send the first information; if the first difference is less than P ₁ dB, the terminal uses the first final power The first information is sent over the first transmission link, and the second information is sent over the second transmission link using the second final power.

Exemplarily, the third parameter may be a value comprehensively mapped by the second base station according to the 5G QoS characteristic parameter, and the second base station may send the third parameter comprehensively mapped according to the 5G QoS characteristic parameter to the terminal, the 5G QoS The characteristic parameters include at least one of the following parameters: resource type, priority level, PDB, PER, averaging window, MDBV, and minimum required communication range. The terminal pre-stores a correspondence between the third parameter, r priority levels corresponding to the third parameter, and r parameter thresholds corresponding to the r priority levels. In a specific implementation, the terminal may divide r priority levels for the third parameter, and pre-configure r parameter thresholds for the r priority levels of the third parameter; or, the terminal may give the third parameter The parameters are divided into r priority levels, and the second base station may configure r parameter thresholds for the r priority levels of the third parameter through high-layer signaling, where the second base station may be the base station of the second transmission link, the The higher layer signaling may be SIB signaling, MIB signaling or RRC signaling.

As shown in Table 12, the correspondence between the third parameter, the four priority levels corresponding to the third parameter, and the four parameter thresholds corresponding to the four priority levels are shown. Among them, 1 and 2 correspond to priority level 1, 3 and 4 correspond to priority level 2, 5 and 6 correspond to priority level 3, and 7 and 8 correspond to priority level 4. The threshold corresponding to priority level 1 is R ₁ dB, the threshold corresponding to priority level 2 is R ₂ dB, the threshold corresponding to priority level 3 is R ₃ dB, and the threshold corresponding to priority level 4 is R ₄ dB.

Table 12

Priority level 1	Priority level 2	Priority level 3	Priority level 4
1, 2	3, 4	5, 6	7, 8
R 1 dB	R 2 dB	R 3 dB	R 4 dB

Exemplarily, if the third parameter comprehensively mapped by the second base station according to the 5G QoS characteristic parameters is 6, according to Table 12, the third priority level corresponding to 6 is priority level 3, and the third parameter corresponding to priority level 3 The threshold is R ₃ dB. If the third difference is greater than or equal to R ₃ dB, the terminal stops sending the second information, that is, the terminal uses the first final power to send the first information through the first transmission link, and the terminal does not Sending the second information; if the third difference is less than R ₃ dB, the terminal uses the first final power to send the first information through the first transmission link, and uses the second final power to send the second information through the second transmission link.

It should be noted that the terminal stops sending the first information to indicate that the terminal stops sending the first information before sending the first information, that is, the terminal does not send the first information.

It should be noted that the terminal stops sending the second information to indicate that the terminal stops sending the second information before sending the second information, that is, the terminal does not send the second information.

Optionally, the first parameter threshold is a parameter threshold preset by the terminal or a parameter threshold configured by higher layer signaling, where the higher layer signaling is system information block SIB signaling, master information block MIB signaling, or radio resource control RRC signaling.

Optionally, the first maximum transmission power and the second maximum transmission power are determined according to the first initial power and the second initial power, and the first initial power is that the terminal sends the first information through the first transmission link , The second initial power is the initial transmit power for the terminal to send the second information through the second transmission link.

Optionally, the first initial power is configured by the first base station, the first base station is the base station of the first transmission link; the second initial power is configured by the second base station, and the second base station is the second Base station of the transmission link.

Optionally, the obtaining module 1201 is further configured to obtain a first initial power and a second initial power, where the first initial power is the initial transmit power at which the terminal sends the first information through the first transmission link, and the second initial power The power is the initial transmit power of the terminal sending the second information through the second transmission link; the determining module 1203 is also used to determine if the sum of the first initial power and the second initial power is greater than the second power threshold Using time division multiplexing or code division multiplexing to send the first information through the first transmission link and the second information through the second transmission link, the second power threshold is determined by P _PowerClass and/or P _EMAX , Among them, P _{PowerClass is} used to represent the maximum power of the terminal defined according to the type of the terminal, and P _{EMAX is} used to represent the maximum power allowed by the terminal configured by RRC signaling.

It should be noted that the first base station, the second base station, or the terminal may configure the multiplexing mode used by the terminal, for example, time division multiplexing mode, code division multiplexing mode, or frequency division multiplexing mode. The first base station is a base station of a first transmission link, and the second base station is a base station of a second transmission link.

Exemplarily, the second power threshold may be the minimum of P _PowerClass and P _EMAX .

Optionally, the first power threshold is determined by at least one of P _PowerClass , P _EMAX, and P _FDM , where P _{PowerClass is} used to indicate the maximum power of the terminal defined according to the type of the terminal, and P _{EMAX is} used It indicates the maximum power allowed by the terminal configured by RRC signaling, and P _{FDM is} used to indicate the maximum power of the terminal defined when the terminal uses frequency division multiplexing to send information.

Exemplarily, the first power threshold may be the minimum value among P _PowerClass , P _EMAX and P _FDM .

Optionally, the first maximum transmit power is less than or equal to the first initial power, the second maximum transmit power is less than or equal to the second initial power, and the first initial power is that the terminal sends the first information through the first transmission link The initial transmit power, the second initial power is the initial transmit power at which the terminal sends the second information through the second transmission link.

Wherein, all relevant content of each step involved in the above method embodiments can be referred to the function description of the corresponding function module, which will not be repeated here.

In this embodiment, the terminal 120 is presented in the form of dividing each functional module in an integrated manner. The "module" herein may refer to a specific ASIC, circuit, processor and memory that execute one or more software or firmware programs, integrated logic circuits, and/or other devices that can provide the above-mentioned functions. In a simple embodiment, those skilled in the art may think that the terminal 120 may adopt the form shown in FIG. 6.

For example, the processor 601 in FIG. 6 may call the computer stored in the memory 603 to execute instructions, so that the terminal 120 executes the side link power control method in the foregoing method embodiment.

Exemplarily, the function/implementation process of the acquisition module 1201, the calculation module 1202, and the determination module 1203 in FIG. 12 may be implemented by the processor 601 in FIG. 6 calling the computer execution instructions stored in the memory 603.

Since the terminal 120 provided in this embodiment can execute the above-mentioned side link power control method, the technical effects that can be obtained can refer to the above-mentioned method embodiments, which will not be repeated here.

Optionally, an embodiment of the present application further provides an apparatus (for example, the apparatus may be a chip system), and the apparatus includes a processor for supporting the foregoing terminal to implement the foregoing side link power control method, for example, acquiring the first maximum Transmission power and second maximum transmission power; if the terminal determines to use frequency division multiplexing to send the first information through the first transmission link and the second information through the second transmission link, according to the first maximum transmission power and The second maximum transmit power calculates the first actual power and the second actual power; if the sum of the first actual power and the second actual power is greater than the first power threshold, the first actual power and the second actual power are used to determine the first Final power and second final power. In one possible design, the device also includes a memory. The memory is used to store necessary program instructions and data of the terminal. Of course, the memory may not be in the device. When the device is a chip system, it may be composed of a chip, or may include a chip and other discrete devices, which is not specifically limited in the embodiments of the present application.

Or, for example, in a case where each functional module is divided in an integrated manner, FIG. 14 shows a schematic structural diagram of a terminal 140. The terminal 140 includes: an acquisition module 1401 and a determination module 1402. The obtaining module 1401 is configured to obtain the first priority level of the terminal if the terminal determines to use frequency division multiplexing to send the first information through the first transmission link and send the second information through the second transmission link. A priority level is a priority level determined according to QoS; an acquisition module 1401 is also used to acquire a first parameter, the first parameter is a parameter determined according to QoS; an acquisition module 1401 is also used to acquire a corresponding to the first parameter The second priority level; the determination module 1402 is used to determine the first reserved power and the second reserved power according to the first priority level and the second priority level, the first reserved power is the The lowest transmission power for the first transmission link to send the first information, and the second reserved power is the lowest transmission power for the terminal to send the second information through the second transmission link.

It should be noted that the first priority level of the terminal may be a PPPP level, and the terminal may indicate the first priority level through SCI. For example, the terminal may indicate that the first priority level is one of PPPP1-PPPP8 through SCI.

Exemplarily, the first parameter may be a value comprehensively mapped by the second base station according to the 5G QoS characteristic parameter, and the second base station may send the first parameter comprehensively mapped according to the 5G QoS characteristic parameter to the terminal, the 5G QoS The characteristic parameters include at least one of the following parameters: resource type, priority level, PDB, PER, averaging window, MDBV, and minimum required communication range. The terminal pre-stores the correspondence between the first parameter and the r priority levels corresponding to the first parameter.

As shown in Table 13, the corresponding relationship between the first parameter and the eight priority levels corresponding to the first parameter is shown. Among them, 1 and 2 correspond to priority level 1, 3 and 4 correspond to priority level 2, 5 and 6 correspond to priority level 3, 7 and 8 correspond to priority level 4, 9 and 10 correspond to priority level 5, 11 and 12 correspond to priority level 6, 13 and 14 correspond to priority level 7, 15 and 16 correspond to priority level 8.

Table 13

Optionally, the determining module 1402 is specifically configured to determine the ratio m of the first reserved power to the first power threshold and the second reserved power to the first power according to the first priority level and the second priority level The ratio n of the threshold, where m+n≤1, 0<m<1, 0<n<1; the first reserved power and the second reserved power are determined according to the first power threshold, m and n.

Exemplarily, if the priority levels of the first priority level and the second priority level are the same, m may be 0.5 and n may be 0.5. For example: if the first priority level is PPPP3 and the second priority level is priority level 3, m is 0.5 and n is 0.5.

Exemplarily, if the priority levels of the first priority level and the second priority level are different, m and n may be determined according to the level difference between the first priority level and the second priority level. For example: if the first priority level is PPPP4 and the second priority level is priority level 6, then m is 0.6 and n is 0.4.

Exemplarily, if the priority levels of the first priority level and the second priority level are greater than the priority level threshold, the sum of m and n may be less than 100. For example: if the first priority level is PPPP7, the second priority level is priority level 8, the first priority level and the second priority level are both greater than the priority level threshold of 5, then m is 0.2 and n is 0.1.

Optionally, the determining the proportion m of the first reserved power to the first power threshold and the proportion n the second reserved power to the first power threshold according to the first priority level and the second priority level include: : Determining the proportion m of the first reserved power to the first power threshold and the proportion n the second reserved power to the first power threshold according to the difference between the first priority level and the second priority level.

Exemplarily, the terminal pre-stores m and n corresponding to the difference between the first priority level and the second priority level, and the terminal may determine according to the difference between the first priority level and the second priority level m and n.

As shown in Table 14, the correspondence between the difference between the first priority level and the second priority level and m, n is shown. The first priority level may be one of PPPP1-PPPP8, and the second priority level may be one of priority level 1 to priority level 8. The table corresponding to the first priority level and the second priority level in Table 14 is the value of m, n. For example, if the first priority level is PPPP5 and the second priority level is priority level 1, then m is 0.2 and n is 0.8. For another example, if the first priority level is PPPP7, the second priority level is priority level 6, m is 0.4, and n is 0.6.

Table 14

Optionally, the determination module 1402 is further specifically configured to: according to the first priority level, the second priority level, the first priority level threshold corresponding to the first priority level, and the second priority level corresponding to The second priority level threshold determines the proportion m of the first reserved power to the first power threshold and the proportion n of the second reserved power to the first power threshold, where m+n≤1, 0<m<1, 0<n<1; determine the first reserved power and the second reserved power according to the first power threshold, m and n.

It should be noted that the first priority level threshold and the second priority level threshold may be thresholds preset by the terminal or configured by high-level signaling, and the high-level signaling is SIB signaling or MIB signaling Or RRC signaling.

Exemplarily, the terminal may determine the ratio m of the first reserved power to the first power threshold according to the difference between the first priority level and the first priority level threshold, and the terminal may determine the ratio of the second priority level and the second priority The difference of the level threshold determines the ratio n of the second reserved power to the first power threshold.

Further, the first priority level may be one of PPPP1-PPPP8, and the second priority level may be one of priority level 1 to priority level 7. The terminal may be based on the first priority level and the first The difference of the priority level threshold determines the proportion m of the first reserved power to the first power threshold, the terminal may determine the second reserved power to occupy the first power threshold according to the difference between the second priority level and the second priority level threshold Of the ratio n.

Exemplarily, if the first priority level is PPPP2, the second priority level is priority level 2, the first priority level threshold is PPPP4, the second priority level threshold is priority level 3, and the first priority level It is different from the first priority level threshold by 2 levels, and the second priority level and the second priority level threshold are different by 1 level. You can set m to 0.5 and n to 0.3.

Optionally, the first power threshold is determined by at least one of P _PowerClass , P _EMAX, and P _FDM , where P _{PowerClass is} used to indicate the maximum power of the terminal defined according to the type of the terminal, and P _{EMAX is} used It indicates the maximum power allowed by the terminal configured by RRC signaling, and P _{FDM is} used to indicate the maximum power of the terminal defined when the terminal uses frequency division multiplexing to send information.

Exemplarily, the first power threshold may be the minimum value among P _PowerClass , P _EMAX and P _FDM .

Optionally, if the sum of the first actual power and the second actual power is greater than the first power threshold, the terminal may reduce the first actual power so that the sum of the reduced first actual power and the second actual power is less than or equal to the A power threshold, and the reduced first actual power is greater than or equal to the first reserved power.

Optionally, if the sum of the first actual power and the second actual power is greater than the first power threshold, the terminal may reduce the second actual power so that the sum of the first actual power and the reduced second actual power is less than or equal to the first A power threshold, and the reduced second actual power is greater than or equal to the second reserved power.

Wherein, all relevant content of each step involved in the above method embodiments can be referred to the function description of the corresponding function module, which will not be repeated here.

In this embodiment, the terminal 140 is presented in the form of dividing each functional module in an integrated manner. The "module" herein may refer to a specific ASIC, circuit, processor and memory that execute one or more software or firmware programs, integrated logic circuits, and/or other devices that can provide the above-mentioned functions. In a simple embodiment, those skilled in the art may think that the terminal 140 may adopt the form shown in FIG. 6.

For example, the processor 601 in FIG. 6 may call the computer stored in the memory 603 to execute instructions, so that the terminal 140 executes the side link power control method in the above method embodiment.

Exemplarily, the functions/implementation processes of the obtaining module 1401 and the determining module 1402 in FIG. 14 may be implemented by the processor 601 in FIG. 6 calling the computer execution instructions stored in the memory 603.

Since the terminal 140 provided in this embodiment can execute the above-mentioned side link power control method, the technical effects that can be obtained can refer to the above-mentioned method embodiments, which will not be repeated here.

Optionally, an embodiment of the present application further provides an apparatus (for example, the apparatus may be a chip system), and the apparatus includes a processor for supporting the terminal 140 to implement the above-described side link power control method, for example, if the terminal determines to use In the frequency division multiplexing mode, the first information is sent through the first transmission link, and the second information is sent through the second transmission link to obtain the first priority level of the terminal; obtain the first parameter; obtain the corresponding to the first parameter The second priority level; the first reserved power and the second reserved power are determined according to the first priority level and the second priority level. In one possible design, the device also includes a memory. The memory is used to store necessary program instructions and data of the terminal 140. Of course, the memory may not be in the device. When the device is a chip system, it may be composed of a chip, or may include a chip and other discrete devices, which is not specifically limited in the embodiments of the present application.

Through the description of the above embodiments, those skilled in the art can clearly understand that, for the convenience and conciseness of description, only the above-mentioned division of each functional module is used as an example for illustration. In practical applications, the above-mentioned functions can be allocated as needed Completed by different functional modules, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above.

In the several embodiments provided in this application, it should be understood that the disclosed device and method may be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the module or unit is only a division of logical functions. In actual implementation, there may be another division manner, for example, multiple units or components may be The combination can either be integrated into another device, or some features can be ignored, or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical, or other forms.

The units described as separate components may or may not be physically separated, and the components displayed as units may be one physical unit or multiple physical units, that is, may be located in one place, or may be distributed in multiple different places . Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or software function unit.

If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it may be stored in a readable storage medium. Based on such an understanding, the technical solutions of the embodiments of the present application may be essentially or part of the contribution to the existing technology or all or part of the technical solutions may be embodied in the form of software products, which are stored in a storage medium In it, several instructions are included to enable a device (which may be a single-chip microcomputer, chip, etc.) or processor to execute all or part of the steps of the methods described in the embodiments of the present application. The foregoing storage media include various media that can store program codes, such as a U disk, a mobile hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

The above is only the specific implementation of this application, but the scope of protection of this application is not limited to this, any changes or replacements within the technical scope disclosed in this application should be covered within the scope of protection of this application . Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (30)

1. A side link power control method, characterized in that the method includes:

   Obtain a first maximum transmission power and a second maximum transmission power. The first maximum transmission power is the maximum transmission power for the terminal to send the first information through the first transmission link, and the second maximum transmission power is the terminal The maximum transmission power at which the second transmission link sends the second information;

   If the terminal determines to use frequency division multiplexing to send the first information through the first transmission link and the second information through the second transmission link, according to the first maximum transmission power and the second maximum transmission power Calculate a first actual power and a second actual power, the first actual power is the actual power at which the terminal uses frequency division multiplexing to send the first information through the first transmission link, and the second actual power is the The terminal uses frequency division multiplexing to transmit the actual power of the second information through the second transmission link;

   If the sum of the first actual power and the second actual power is greater than the first power threshold, the first final power and the second final power are determined according to the first actual power and the second actual power, and the first final power is The terminal transmits the final transmission power of the first information through the first transmission link, and the second final power is the final transmission power of the terminal transmitting the second information through the second transmission link.
2. The side link power control method according to claim 1, wherein the determining the first final power and the second final power according to the first actual power and the second actual power includes:

   Reducing the second actual power so that the sum of the first actual power and the reduced second actual power is less than or equal to the first power threshold;

   Determine the first actual power as the first final power;

   It is determined that the reduced second actual power is the second final power.
3. The side link power control method according to claim 2, wherein the method further comprises:

   Acquiring a first parameter, the first parameter being a parameter determined according to quality of service QoS;

   Acquiring a first priority level corresponding to the first parameter;

   Acquiring a first difference value, where the first difference value is the difference between the second actual power and the second final power;

   If the first difference is greater than or equal to the first parameter threshold corresponding to the first priority level, the terminal stops sending the second information.
4. The side link power control method according to claim 3, wherein the first parameter threshold is a parameter threshold preset by the terminal or a parameter threshold configured by high layer signaling, and the high layer signaling is System information block SIB signaling, master information block MIB signaling or radio resource control RRC signaling.
5. The side link power control method according to any one of claims 1 to 4, wherein the first maximum transmission power and the second maximum transmission power are determined according to the first initial power and the second initial power , The first initial power is the initial transmit power for the terminal to send the first information through the first transmission link, and the second initial power is the second initial power for the terminal to send the second information through the second transmission link The initial transmit power of the information.
6. The side link power control method according to claim 5, wherein the first initial power is configured by a first base station, and the first base station is a base station of the first transmission link; the first The second initial power is configured by the second base station, and the second base station is the base station of the second transmission link.
7. The side link power control method according to claim 1, wherein before the acquiring the first maximum transmission power and the second maximum transmission power, the method further comprises:

   Obtain a first initial power and a second initial power, the first initial power is the initial transmit power of the terminal to send the first information through the first transmission link, and the second initial power is the terminal The initial transmission power of the second information transmitted by the second transmission link;

   If the sum of the first initial power and the second initial power is greater than the second power threshold, the terminal determines to use time division multiplexing or code division multiplexing to send the first information through the first transmission link, through the first Two transmission links send second information, the second power threshold is determined by P _PowerClass and/or P _EMAX , where P _{PowerClass is} used to indicate the maximum power of the terminal defined according to the type of the terminal, P _{EMAX is} used to indicate the maximum power allowed by the terminal configured by RRC signaling.
8. The side link power control method according to any one of claims 1-7, wherein the first power threshold is determined by at least one of P _PowerClass , P _EMAX, and P _FDM , where P _PowerClass It is used to indicate the maximum power of the terminal defined according to the type of the terminal, P _{EMAX is} used to indicate the maximum power allowed by the terminal configured by RRC signaling, and P _{FDM is} used to indicate that the terminal uses frequency division multiplexing The maximum power of the terminal defined when sending information in a manner.
9. The side link power control method according to any one of claims 1-7, wherein the first maximum transmit power is less than or equal to the first initial power, and the second maximum transmit power is less than or equal to the second initial power , The first initial power is the initial transmit power for the terminal to send the first information through the first transmission link, and the second initial power is the second information for the terminal to send the second information through the second transmission link The initial transmit power.
10. A side link power control method, characterized in that the method includes:

    If the terminal determines to use frequency division multiplexing to send the first information through the first transmission link and the second information through the second transmission link to obtain the first priority level of the terminal, the first priority level Priority level determined according to QoS;

    Acquiring a first parameter, the first parameter being a parameter determined according to QoS;

    Obtaining a second priority level corresponding to the first parameter;

    Determining a first reserved power and a second reserved power according to the first priority level and the second priority level, the first reserved power is the first reservation power sent by the terminal through the first transmission link The minimum transmission power of an information, and the second reserved power is the minimum transmission power of the second information transmitted by the terminal through the second transmission link.
11. The side link power control method according to claim 10, wherein the determining the first reserved power and the second reserved power according to the first priority level and the second priority level includes :

    Determining the proportion m of the first reserved power to the first power threshold and the proportion n the second reserved power to the first power threshold according to the first priority level and the second priority level, where m +n≤1, 0<m<1, 0<n<1;

    The first reserved power and the second reserved power are determined according to the first power threshold, m and n.
12. The side link power control method according to claim 11, wherein the ratio m of the first reserved power to the first power threshold is determined according to the first priority level and the second priority level The ratio n of the second reserved power to the first power threshold includes:

    The ratio m of the first reserved power to the first power threshold and the ratio n of the second reserved power to the first power threshold are determined according to the difference between the first priority level and the second priority level.
13. The side link power control method according to claim 10, wherein the determining the first reserved power and the second reserved power according to the first priority level and the second priority level, and include:

    The first priority level, the second priority level, the first priority level threshold corresponding to the first priority level and the second priority level threshold corresponding to the second priority level are determined according to A ratio m of reserved power to the first power threshold and a ratio n of the second reserved power to the first power threshold, where m+n≤1, 0<m<1, 0<n<1;

    The first reserved power and the second reserved power are determined according to the first power threshold, m and n.
14. The side link power control method according to any one of claims 11 to 13, wherein the first power threshold is determined by at least one of P _PowerClass , P _EMAX, and P _FDM , where P _PowerClass It is used to indicate the maximum power of the terminal defined according to the type of the terminal, P _{EMAX is} used to indicate the maximum power allowed by the terminal configured by RRC signaling, and P _{FDM is} used to indicate that the terminal uses frequency division multiplexing The maximum power of the terminal defined when sending information in a manner.
15. A terminal, characterized in that the terminal includes: an acquisition module, a calculation module, and a determination module;

    The acquisition module is configured to acquire a first maximum transmission power and a second maximum transmission power, where the first maximum transmission power is the maximum transmission power at which the terminal sends the first information through the first transmission link, and the second maximum transmission The power is the maximum transmission power for the terminal to send the second information through the second transmission link;

    The calculation module is configured to send the first information through the first transmission link and the second information through the second transmission link if the terminal determines to use frequency division multiplexing, according to the first maximum transmit power and The second maximum transmit power calculates a first actual power and a second actual power. The first actual power is the actual power at which the terminal sends the first information through the first transmission link using frequency division multiplexing. The second actual power is the actual power at which the terminal sends the second information through the second transmission link using frequency division multiplexing;

    The determining module is configured to determine the first final power and the second final power according to the first actual power and the second actual power if the sum of the first actual power and the second actual power is greater than the first power threshold, The first final power is the final transmission power of the terminal sending the first information through the first transmission link, and the second final power is the final transmission power of the terminal sending the second information through the second transmission link.
16. The terminal according to claim 15, wherein the determination module is specifically configured to:

    Reducing the second actual power so that the sum of the first actual power and the reduced second actual power is less than or equal to the first power threshold;

    Determine the first actual power as the first final power;

    It is determined that the reduced second actual power is the second final power.
17. The terminal according to claim 16, wherein:

    The acquiring module is further configured to acquire a first parameter, the first parameter is a parameter determined according to quality of service QoS;

    The obtaining module is further used to obtain a first priority level corresponding to the first parameter;

    The obtaining module is further configured to obtain a first difference value, where the first difference value is the difference between the second actual power and the second final power;

    The terminal also includes: a stop module;

    The stopping module is configured to stop the terminal from sending the second information if the first difference is greater than or equal to the first parameter threshold corresponding to the first priority level.
18. The terminal according to claim 17, wherein the first parameter threshold is a parameter threshold preset by the terminal or a parameter threshold configured by high layer signaling, and the high layer signaling is a system information block SIB signal Command, master information block MIB signaling or radio resource control RRC signaling.
19. The terminal according to any one of claims 15 to 18, wherein the first maximum transmission power and the second maximum transmission power are determined according to a first initial power and a second initial power, and the first An initial power is the initial transmission power for the terminal to send the first information through the first transmission link, and the second initial power is the initial transmission power for the terminal to send the second information through the second transmission link .
20. The terminal according to claim 19, wherein the first initial power is configured by a first base station, the first base station is a base station of the first transmission link; the second initial power is a first Configured by two base stations, the second base station is a base station of the second transmission link.
21. The terminal according to claim 15, wherein:

    The acquiring module is further configured to acquire a first initial power and a second initial power. The first initial power is the initial transmit power at which the terminal sends the first information through the first transmission link. The second The initial power is the initial transmission power of the terminal sending the second information through the second transmission link;

    The determining module is further configured to: if the sum of the first initial power and the second initial power is greater than a second power threshold, the terminal determines to use time division multiplexing or code division multiplexing through the first transmission chain Way to send the first information and the second information through the second transmission link. The second power threshold is determined by P _PowerClass and/or P _EMAX , where P _{PowerClass is} used to indicate that it is defined according to the type of the terminal The maximum power of the terminal, P _{EMAX is} used to indicate the maximum power allowed by the terminal configured by RRC signaling.
22. The terminal according to any one of claims 15-21, wherein the first power threshold is determined by at least one of P _PowerClass , P _EMAX, and P _FDM , where P _{PowerClass is} used to indicate The maximum power of the terminal defined by the type of the terminal, P _{EMAX is} used to indicate the maximum power allowed by the terminal configured by RRC signaling, and P _{FDM is} used to indicate that the terminal uses the frequency division multiplexing method to send information. The maximum power of the terminal.
23. The terminal according to any one of claims 15 to 21, wherein the first maximum transmit power is less than or equal to the first initial power, and the second maximum transmit power is less than or equal to the second initial power, the first The initial power is the initial transmission power of the terminal sending the first information through the first transmission link, and the second initial power is the initial transmission power of the terminal sending the second information through the second transmission link.
24. A terminal, characterized in that the terminal includes: an acquisition module and a determination module;

    The obtaining module is configured to obtain the first priority level of the terminal if the terminal determines to use frequency division multiplexing to send the first information through the first transmission link and the second information through the second transmission link, The first priority level is a priority level determined according to QoS;

    The acquiring module is also used to acquire a first parameter, the first parameter is a parameter determined according to QoS;

    The obtaining module is further used to obtain a second priority level corresponding to the first parameter;

    The determining module is configured to determine a first reserved power and a second reserved power according to the first priority level and the second priority level, the first reserved power is determined by the terminal through the The first transmission link sends the lowest transmission power for the first information, and the second reserved power is the lowest transmission power for the terminal to send the second information through the second transmission link.
25. The terminal according to claim 24, wherein the determination module is specifically configured to:

    Determining the proportion m of the first reserved power to the first power threshold and the proportion n the second reserved power to the first power threshold according to the first priority level and the second priority level, where m +n≤1, 0<m<1, 0<n<1;

    The first reserved power and the second reserved power are determined according to the first power threshold, m and n.
26. The terminal according to claim 25, wherein the ratio m of the first reserved power to the first power threshold and the second reservation are determined according to the first priority level and the second priority level The ratio n of power to the first power threshold includes:

    The ratio m of the first reserved power to the first power threshold and the ratio n of the second reserved power to the first power threshold are determined according to the difference between the first priority level and the second priority level.
27. The terminal according to claim 24, wherein the determination module is further specifically configured to:

    The first priority level, the second priority level, the first priority level threshold corresponding to the first priority level and the second priority level threshold corresponding to the second priority level are determined according to A ratio m of reserved power to the first power threshold and a ratio n of the second reserved power to the first power threshold, where m+n≤1, 0<m<1, 0<n<1;

    The first reserved power and the second reserved power are determined according to the first power threshold, m and n.
28. The terminal according to any one of claims 25 to 27, wherein the first power threshold is determined by at least one of P _PowerClass , P _EMAX, and P _FDM , where P _{PowerClass is} used to indicate The maximum power of the terminal defined by the type of the terminal, P _{EMAX is} used to indicate the maximum power allowed by the terminal configured by RRC signaling, and P _{FDM is} used to indicate that the terminal uses the frequency division multiplexing method to send information. The maximum power of the terminal.
29. A terminal includes: at least one processor, at least one memory, and a communication interface, characterized in that

    The communication interface and the at least one memory are coupled to the at least one processor; the terminal communicates with other devices through the communication interface, and the at least one memory is used to store a computer program so that the computer program is used by all The at least one processor implements the side link power control method according to any one of claims 1-9 when executed, or the side link power control method according to any one of claims 10-14.
30. A computer-readable storage medium, characterized by comprising a computer program, when the computer program runs on at least one storage node, the at least one storage node executes the side of any one of claims 1-9 The link power control method, or the side link power control method according to any one of claims 10-14.

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