Power determination method, terminal and readable storage medium

Abstract

The present application discloses a power determination method, a terminal and a readable storage medium, which belong to the technical field of communication. The power determination method of the embodiment of the present application includes a step of determining power information for a first terminal to transmit a target signal in a first resource pool, the target signal includes a first sidelink SL reference signal or a physical sidelink control channel PSCCH, and the first resource pool includes at least one of a resource pool associated with the first SL reference signal, a resource pool unavailable for data transmission or a physical sidelink shared channel PSSCH.

Description

[Technical Field]

[0001] (CROSS-REFERENCE TO RELATED APPLICATIONS) This application claims priority to Chinese patent application No. 202210471502.7, filed in China on April 28, 2022, the entire contents of which are incorporated herein by reference.

[0002] The present application relates to the technical field of communications, and in particular to a power determination method, a terminal, and a readable storage medium. [Background technology]

[0003] The Long Term Evolution (LTE) system supports SideLink (SL) transmission, i.e., direct physical layer data transmission between user equipment (UE). LTE SL is broadcast-based and can be used to support basic safety-related communications for vehicle-to-everything (V2X) communications, but cannot be used for other more advanced V2X services. The 5th Generation Mobile Communication Technology (5G) New Radio (NR) system supports more advanced SL transmission designs, such as unicast, multicast, or groupcast, and can therefore support a wider range of service types.

[0004] Currently, there is no solution as yet to how to determine the power information for transmitting the SL reference signal for positioning and the power information for the Physical SideLink Control Channel (PSCCH) in SL transmission. Summary of the Invention [Problem to be solved by the invention]

[0005] The embodiments of the present application provide a power determination method, a terminal, and a readable storage medium that can solve the problem of how to determine power information for transmitting an SL reference signal for positioning and power information for a PSCCH. [Means for solving the problem]

[0006] In a first aspect, the method includes a step of determining power information for transmitting a target signal in a first resource pool by a first terminal, the target signal including a first sidelink (SL) reference signal or a physical sidelink control channel (PSCCH); The first resource pool a resource pool associated with the first SL reference signal; Resource pools that are unavailable for data transmission or the Physical Sidelink Shared Channel (PSSCH) The present invention provides a power determination method including at least one of:

[0007] In a second aspect, the method further comprises: a determination module configured to determine power information for transmitting a target signal in a first resource pool, the target signal including a first sidelink (SL) reference signal or a physical sidelink control channel (PSCCH); The first resource pool a resource pool associated with the first SL reference signal; Resource pools that are unavailable for data transmission or the physical sidelink shared channel (PSSCH). The present invention provides a power determination apparatus including at least one of:

[0008] In a third aspect, there is provided a terminal comprising a processor and a memory storing programs or commands executable by the processor, the programs or commands being executed by the processor to implement the steps of the method according to the first aspect.

[0009] In a fourth aspect, there is provided a terminal comprising a processor and a communication interface, the processor being adapted to determine power information for transmitting a target signal in a first resource pool, the target signal comprising a first SL reference signal or a physical sidelink control channel PSCCH, the first resource pool comprising at least one of a resource pool associated with the first SL reference signal and a resource pool unavailable for data transmission or a physical sidelink shared channel PSSCH.

[0010] In a fifth aspect, there is provided a readable storage medium storing a program or commands that, when executed by a processor, implements the steps of the method according to the first aspect.

[0011] In a sixth aspect, there is provided a chip comprising a processor and a communication interface, the communication interface and the processor being coupled together, the processor being adapted to execute programs or commands to implement the steps of the method according to the first aspect.

[0012] In a seventh aspect, there is provided a computer program / program product stored on a storage medium and adapted to be executed by at least one processor to implement the steps of the method according to the first aspect. [Effects of the Invention]

[0013] In an embodiment of the present application, a first terminal determines power information for transmitting a target signal in a first resource pool, the target signal including a first SL reference signal that is a reference signal for positioning or a physical sidelink control channel (PSCCH), and the first resource pool includes at least one of a resource pool associated with the first SL reference signal and a resource pool unavailable for data transmission or a physical sidelink shared channel (PSSCH). The above means allows the determination of power information for transmitting the first SL reference signal and power information for the PSCCH, and further ensures the reliability of SL transmission. [Brief explanation of the drawings]

[0014] [Figure 1] 1 is a block diagram of a wireless communication system applicable to an embodiment of the present application; [Figure 2] 1 is a flowchart of a power determination method provided in an embodiment of the present application. [Figure 3] 1 is a schematic diagram of the format of an SL reference signal provided in an embodiment of the present application. [Figure 4] FIG. 1 is a block diagram of a power determination device provided in an embodiment of the present application. [Figure 5] FIG. 1 is a configuration diagram of a communication device provided in an embodiment of the present application. [Figure 6] FIG. 2 is a configuration diagram of a terminal provided in an embodiment of the present application. DETAILED DESCRIPTION OF THE INVENTION

[0015] Hereinafter, the technical solutions in the embodiments of the present application will be clearly explained with reference to the drawings in the embodiments of the present application, and it should be understood that the described embodiments are only a part of the embodiments of the present application, not all of the embodiments, and all other embodiments obtained by those skilled in the art based on the embodiments in the present application fall within the scope of protection of the present application.

[0016] The terms "first," "second," etc., used in the specification and claims of this application are not intended to describe a particular order or chronology, but rather to distinguish between similar objects. It should be understood that terms used in this manner may be interchanged where appropriate so that the embodiments of this application can be practiced in orders other than those illustrated or described herein. It should also be understood that objects distinguished by "first" and "second" generally belong to a single category and do not limit the number of objects; for example, a first object may be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of connected objects, and the symbol " / " generally indicates that the related objects before and after are in an "or" relationship.

[0017] It should be noted that the techniques described in the embodiments of this application are not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-Carrier Frequency Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" in the embodiments of this application are often used interchangeably, and the described techniques can be used in other systems and wireless technologies in addition to those mentioned above. While the following description will discuss New Radio (NR) systems for illustrative purposes, and NR terminology is used in much of the following description, these technologies may be used in conjunction with other systems and wireless technologies, such as 6th Generation (6G) networks. th It can also be applied to applications other than NR system applications, such as 6G (Generation 6G) communication systems.

[0018] 1 shows a block diagram of a wireless communication system applicable to an embodiment of the present application. The wireless communication system includes a terminal 11 and a network side device 12. Here, the terminal 11 may be a terminal side device such as a mobile phone, a tablet personal computer (Tablet Personal Computer), a laptop computer (also called a notebook computer), a personal digital assistant (PDA), a personal digital assistant (PDA), a netbook, an ultra-mobile personal computer (UMPC), a mobile internet device (MID), an augmented reality (AR) / virtual reality (VR) device, a robot, a wearable device, a vehicle user equipment (VUE), a pedestrian user equipment (PUE), a smart home (home devices equipped with wireless communication functions such as a refrigerator, a television, a washing machine, or furniture), a game console, a personal computer (PC), an automated teller machine (ATM), or a kiosk. The wearable device includes a smart watch, a smart wristband, a smart earphone, a smart glasses, a smart accessory (such as a smart bracelet, a smart ring, a smart necklace, a smart anklet, or the like), a smart wristlet, a smart wear, etc. It should be noted that the embodiments of the present application are not limited to a specific type of the terminal 11. The network side equipment 12 may include an access network equipment or a core network equipment, where the access network equipment may be referred to as a radio access network equipment, a radio access network (RAN), a radio access network function, or a radio access network unit.The access network device may include a base station, a wireless local area network (WLAN) access point, a WiFi node, etc., and the base station may be called a Node B, an evolved Node B (eNB), an access point, a base transceiver station (BTS), a radio base station, a radio transceiver, a basic service set (BSS), an extended service set (ESS), a home B node, a home evolved B node, a transmitting receiving point (TRP), or any other appropriate term in the art. As long as the same technical effect can be achieved, the base station is not limited to a specific technical term. It should be noted that although the embodiments of this application only use base stations in an NR system as examples, the specific type of base station is not limited. Next, with reference to the drawings, a power determination method provided in the embodiments of this application will be described in detail according to several embodiments and use cases thereof.

[0019] As shown in FIG. 2, an embodiment of the present application provides a power determination method, which includes the following steps 201:

[0020] In step 201, a first terminal determines power information for transmitting a target signal in a first resource pool, where the target signal includes a first SideLink (SL) reference signal or a Physical SideLink Control Channel (PSCCH).

[0021] The first SL reference signal may be understood as a reference signal for positioning, and may include an SL Positioning Reference Signal (PRS) and positioning signals extended with an SL PRS, such as a SideLink Synchronization Signal Block (S-SSB), an SL Channel State Information Reference Signal (CSI-RS), an SL Phase-Tracking Reference Signal (PTRS), and an SL Demodulation Reference Signal (DMRS).

[0022] The PSCCH is used to transmit signals related to the SL reference signal, such as sidelink control information (SCI) transmitted before the SL reference signal transmission.

[0023] The power information includes at least one of a target power, a power headroom (PH), a power adjustment value, and a power adjustment method, and the power adjustment method is, for example, that the receiving terminal schedules the transmitting terminal to adjust the power according to the received power, or that the transmitting terminal adjusts the transmission power according to the received power fed back from the receiving terminal.

[0024] Furthermore, the power adjustment method further includes adjusting the power according to the power of resource elements (REs) in a comb structure.

[0025] Furthermore, the first terminal may transmit the PH to at least one of the receiving terminal, the network side device, or the scheduling terminal.

[0026] The first resource pool includes at least one of the following (1) and (2): (1) A resource pool associated with the first SL reference signal. The resource pool associated with the first SL reference signal includes at least one of the following (11), (12), and (13): (11) A resource pool available for transmitting the first SL reference signal. (12) A dedicated resource pool to be used for the first SL reference signal, as indicated by the first indication information. (13) A resource pool in which the first SL reference signal has the highest priority, that is, the first SL reference signal has the highest priority in this resource pool. (2) A resource pool that is unavailable for data transmission or the Physical Sidelink Shared Channel (PSSCH).

[0027] In the above, the first resource pool may be a resource pool shared by a plurality of terminals.

[0028] In this embodiment, a first terminal determines power information for transmitting a target signal in a first resource pool, the target signal including a first SL reference signal or a PSCCH, and the first resource pool includes at least one of a resource pool associated with the first SL reference signal and a resource pool unavailable for data transmission or a PSSCH. By using the above means, it is possible to determine power information for transmitting the first SL reference signal and power information for the PSCCH, and further ensure the reliability of SL transmission.

[0029] In some embodiments of the present application, the target power of the PSCCH is determined by the target power of the first SL reference signal, and further, the target power of the PSCCH is the target power of the first SL reference signal.

[0030] Furthermore, the target power of the PSCCH is determined by the target power of the first SL reference signal, the number of resource blocks (RBs) of the first SL reference signal, and the number of RBs of the PSCCH.

[0031] In one embodiment, the target power P of the PSCCH at the i-th time domain opportunity PSCCH (i) is

number

number

number

[0032] In some embodiments of the present application, the target power of the first SL reference signal is determined by at least one of the following (1), (2), and (3): (1) Setting information for the first SL reference signal. Here, the setting information includes at least one of the following (11), (12), and (13). (11) A target parameter for adjusting the power coefficient of the transmission power of the first SL reference signal. (12) A predefined maximum transmit power, P CMAX . (13) P, which is the maximum transmission power at the channel busy ratio (CBR). MAX,CBR Optionally, when the first resource pool is a resource pool associated with the first SL reference signal, the CBR: a percentage of subchannels in which a received signal strength indication (RSSI) of the first SL reference signal measured in the first resource pool exceeds a first threshold; a ratio of resources of the first SL reference signal in which the RSSI of the first SL reference signal measured in the first resource pool exceeds a second threshold; a proportion of the time domain of the first SL reference signal in which the RSSI of the first SL reference signal measured in the first resource pool exceeds a third threshold; a ratio of REs in which the RSSI of the first SL reference signal measured in the first resource pool exceeds a fourth threshold; a ratio of combs in which the RSSI of the first SL reference signal measured in the first resource pool exceeds a fifth threshold; The percentage of subchannels in which the RSSI of the DMRS corresponding to the PSCCH measured in the first resource pool exceeds a sixth threshold. Includes one of the following. (2) A first transmit power of a first SL reference signal calculated based on the SL path loss reference signal. (3) A second transmit power of the first SL reference signal calculated based on the downlink path loss reference signal.

[0033] For example, in a first type of implementation, the target power of the first SL reference signal is:

number

[0034] In a second type of implementation, the power of interest for the first SL reference signal is:

number

[0035] In a third type of implementation, the target power of the first SL reference signal is:

number

[0036] In a fourth type of implementation, the target power of the first SL reference signal is:

number

number

number

number

[0037] In a fifth type of implementation, the power of interest for the first SL reference signal is:

number

number

number

[0038] In some embodiments of the present application, the first transmission power is determined by a first parameter, the number of RBs of the first SL reference signal and the path loss of the SL path loss reference signal, and the first parameter is used to adjust the power coefficient of the transmission power of the first SL reference signal.

[0039] Optionally, the path loss of the SL path loss reference signal is: the transmit power of the SL path loss reference signal; Reference Signal Receiving Power (RSRP) of the SL path loss reference signal is determined by one of The RSRP includes an L1 RSRP, or the RSRP includes a first RSRP determined by upper layer filter coefficients and the L1 RSRP.

[0040] For example, the PL can be obtained by the following calculation method.

[0041] Means 1:

number

[0042] Means 2:

number

[0043] In the above means 1 and means 2, PL is determined by the first terminal, and the values ​​of B and C are transmitted to the first terminal from the terminal that receives the SL path loss reference signal.

[0044] Means 3:

number

number

[0045] The PL in the means 3 is determined by the terminal receiving the SL path loss reference signal, and the value of P0 needs to be transmitted from the first terminal to the terminal receiving the SL path loss reference signal.

[0046] Optionally, the SL path loss reference signal as described above is DMRS corresponding to PSSCH, DMRS corresponding to PSCCH, Second SL reference signal, which is a reference signal for positioning and if the SL path loss reference signal is a second SL reference signal, the RSRP of the second SL reference signal is the sum of the power in each of the REs transmitting the second SL reference signal.

[0047] In some embodiments of the present application, the second transmission power is determined by a second parameter, the number of RBs of the first SL reference signal and the path loss of the downlink path loss reference signal, and the second parameter is used to adjust the power coefficient of the transmission power of the first SL reference signal.

[0048] In some embodiments of the present application, the step of determining power information for transmitting a target signal in a first resource pool by the first terminal includes: determining a number N of first SL reference signals to be transmitted by the first terminal in a first time domain opportunity on a first resource pool, where N is a positive integer; the first terminal determining a target power at which to transmit each first SL reference signal in the first time domain opportunity; Includes:

[0049] Specifically, the target power of each first SL reference signal can be determined by the above-mentioned means. After determining the target powers of the N first SL reference signals, the first terminal may transmit each first SL reference signal based on the respective target powers, or may transmit the target powers of the N reference signals to another terminal, which then transmits each first SL reference signal. That is, after the step in which the first terminal determines the target power at which each first SL reference signal is transmitted in the first time domain opportunity, the method includes: the first terminal transmitting the N first SL reference signals to other terminals; Or, receiving, by the first terminal, the N first SL reference signals transmitted from the other terminals; When the other terminals include a plurality of terminals, the first terminal desires that the received powers of the received N first SL reference signals are as consistent as possible or that the received powers of the N first SL reference signals are within a predetermined threshold range, and for this reason, the transmission power of each of the other terminals may be different, for example, the transmission power of different N first SL reference signals is determined according to the different reception powers at which the first terminal receives the N first SL reference signals. Furthermore, when the N first SL reference signals are transmitted from the other terminals to the first terminal, the reception powers at which the first terminal receives the N first SL reference signals are within a predetermined threshold range.

[0050] In the above, each first SL reference signal can be transmitted with a corresponding target power. The other terminals may be one terminal or multiple terminals, and are not limited thereto. Optionally, the maximum number N of first SL reference signals transmitted in one time domain opportunity may be specified by a protocol, instructed by a network side device, or determined by a higher layer. Each time domain opportunity for the first SL reference signal includes an automatic gain control (AGC) symbol and a gap (Gap, GP) symbol. Here, the automatic gain control (AGC) symbol may be a repetition of the first symbol of the SL-PRS or an extension of the SL-PRS symbol. Here, the gap symbol may be a measurement gap or a gap symbol for transmit / receive conversion. Optionally, the SL reference signal cannot be mapped to the symbol. For example, different terminals correspond to different time domain opportunities, each of which has an AGC and / or GP symbol, or different SL-PRSs correspond to different time domain opportunities, each of which has an AGC and / or GP symbol. As shown in FIG. 3, each time domain opportunity has an AGC symbol and a GP symbol.

[0051] In some embodiments of the present application, the step of determining a target power at which each first SL reference signal is transmitted in the first time domain opportunity by the first terminal includes: The first terminal determines a target power for transmitting N first SL reference signals to M terminals in the first time domain opportunity, wherein the target power for each first SL reference signal is determined by a path loss of a downlink path loss reference signal, and the path loss of the downlink path loss reference signal is determined by: The average RSRP received by M terminals, where M is a positive integer. The minimum RSRP value among the RSRPs received by M terminals The value is determined by at least one of the following:

[0052] In one embodiment, different terminals among the M terminals are in different locations, and the RSRPs received by the M terminals may be different. When the first terminal determines the target powers of the N first SL reference signals, it can determine the path loss of the downlink path loss reference signal by the above means.

[0053] Different terminals among the N1 terminals may be in different locations, and the RSRPs received by the N1 terminals may be different. When in-band emission is avoided by matching the transmission power, the M terminals are within a predetermined area (e.g., the same zone ID, within Xm communication range), or the RSRPs of the M terminals are within a predetermined range.

[0054] In some embodiments of the present application, after the step of the first terminal determining target powers for transmitting N first SL reference signals to M terminals in the first time domain opportunity, the method further comprises: The method further includes the step of the first terminal performing one of the following (1), (2) and (3) when the sum of the target powers of the N first SL reference signals is greater than the maximum transmission power of the first terminal. (1) Transmit N1 first SL reference signals to the M terminals, and select and transmit the N1 first SL reference signals if the N1 first SL reference signals are signals among the N first SL reference signals, and N1 is a positive integer smaller than N, i.e., if the sum of the target powers of the N first SL reference signals is greater than the maximum transmission power of the first terminal. (2) The N1 first SL reference signals are transmitted to M1 terminals, where the M1 terminals are terminals among the M terminals and M1 is a positive integer smaller than M. That is, when the sum of the target powers of the N first SL reference signals is greater than the maximum transmission power of the first terminal, M1 terminals are selected from the M terminals, and N1 first SL reference signals are selected from the N first SL reference signals and transmitted. (3) Transmitting N first SL reference signals to the M terminals, the transmission power of a first first SL reference signal among the N first SL reference signals is smaller than the target power of the first first SL reference signal, and the first first SL reference signal is one or more signals among the N first SL reference signals, i.e., reducing the target power of some of the N first SL reference signals.

[0055] By the above means, it is possible to determine how to determine the transmission power of a plurality of first SL reference signals in one time domain opportunity, thereby improving the reliability of SL transmission.

[0056] In the above, the maximum transmission power of the first terminal is P CMAX or P MAX,CBR may be.

[0057] In some embodiments of the present application, the M1 terminals are determined by at least one of the following (1), (2), and (3): (1) RSRP of a second terminal: The second terminal is any one of the M terminals, for example, the second terminal is a terminal whose received RSRP is greater than a first predetermined threshold. (2) The priority of the second terminal, for example, the second terminal is a terminal whose priority is greater than a second predetermined threshold. (3) The distance between the second terminal and the first terminal. For example, a terminal whose distance from the first terminal is equal to or less than a third predetermined threshold is selected.

[0058] In the above, the M1 terminals may include one or more second terminals.

[0059] In some embodiments of the present application, the N1 first SL reference signals are determined by the priority of the third SL reference signal, and the third SL reference signal is any one of the N first SL reference signals, for example, the third SL reference signal is a reference signal whose priority is greater than a fourth predetermined threshold, and the N1 first SL reference signals may include one or more third SL reference signals.

[0060] In some embodiments of the present application, the step of determining power information for transmitting a target signal in a first resource pool by the first terminal includes: The first terminal determines a PH to transmit the first SL reference signal in a first resource pool at a second time domain opportunity; The first terminal transmits the PH of the first SL reference signal to a target device including at least one of a terminal and a network side device; Includes:

[0061] The power determination method provided in the embodiments of the present application may be executed by a power determination device, and the power determination device provided in the embodiments of the present application will be described as an example in which the power determination device executes the power determination method in the embodiments of the present application.

[0062] As shown in FIG. 4, the embodiment of the present application A power determination apparatus 400, comprising: a determination module 401 used for determining power information for transmitting a target signal in a first resource pool, the target signal including a first sidelink (SL) reference signal or a physical sidelink control channel (PSCCH); The first resource pool a resource pool associated with the first SL reference signal; Resource pools that are unavailable for data transmission or the physical sidelink shared channel (PSSCH). The present invention provides a power determination apparatus including at least one of:

[0063] Optionally, the resource pool associated with the first SL reference signal comprises: a resource pool available for transmission of the first SL reference signal; a dedicated resource pool to be used for the first SL reference signal, as indicated by first indication information; the resource pool with the highest priority of the first SL reference signal It includes at least one of the following.

[0064] Optionally, the power information includes at least one of a target power, a power headroom PH, a power adjustment value, and a power adjustment scheme.

[0065] Optionally, the target power of the PSCCH is determined by the target power of the first SL reference signal.

[0066] Optionally, the target power P of the PSCCH at the i-th time domain opportunity PSCCH (i) is

number

number

number

[0067] Optionally, the target power of the first SL reference signal is: Setting information of the first SL reference signal; a first transmit power of a first SL reference signal calculated based on the SL path loss reference signal; a second transmit power of the first SL reference signal calculated based on the downlink path loss reference signal; The value is determined by at least one of the following:

[0068] Optionally, the configuration information comprises: a target parameter for adjusting a power coefficient of the transmission power of the first SL reference signal; A predefined maximum transmit power, P CMAX , The maximum transmission power at the channel busy rate CBR is P MAX,CBR It includes at least one of the following.

[0069] Optionally, when the first resource pool is a resource pool associated with the first SL reference signal, the CBR: a ratio of subchannels in which the RSSI of the first SL reference signal measured in the first resource pool exceeds a first threshold; a ratio of resources of the first SL reference signal in which the RSSI of the first SL reference signal measured in the first resource pool exceeds a second threshold; a proportion of the time domain of the first SL reference signal in which the RSSI of the first SL reference signal measured in the first resource pool exceeds a third threshold; a ratio of REs in which the RSSI of the first SL reference signal measured in the first resource pool exceeds a fourth threshold; a ratio of combs in which the RSSI of the first SL reference signal measured in the first resource pool exceeds a fifth threshold; a ratio of subchannels in which the RSSI of the demodulation reference signal DMRS corresponding to the PSCCH measured in the first resource pool exceeds a sixth threshold; Includes one of the following.

[0070] Optionally, the first transmit power is determined by a first parameter, a number of RBs of the first SL reference signal, and a path loss of the SL path loss reference signal; The first parameter is used to adjust a power coefficient of the transmission power of the first SL reference signal.

[0071] Optionally, the path loss of the SL path loss reference signal is: the transmit power of the SL path loss reference signal; the reference signal received power RSRP of the SL path loss reference signal is determined by one of The RSRP includes an L1 RSRP, or the RSRP includes a first RSRP determined by upper layer filter coefficients and the L1 RSRP.

[0072] Optionally, the SL path loss reference signal is: a demodulation reference signal DMRS corresponding to the PSSCH; DMRS corresponding to PSCCH, Second SL reference signal, which is a reference signal for positioning It includes at least one of the following.

[0073] Optionally, when the SL path loss reference signal includes the second SL reference signal, the RSRP of the second SL reference signal is the sum of the power in each of the REs transmitting the second SL reference signal.

[0074] Optionally, the second transmit power is determined by a second parameter, the number of RBs of the first SL reference signal and the path loss of the downlink path loss reference signal; The second parameter is used to adjust the power coefficient of the transmission power of the first SL reference signal.

[0075] Optionally, the decision module 401: a first determination sub-module for determining a number N of first SL reference signals to be transmitted in a first resource pool in a first time domain opportunity, where N is a positive integer; a second determination sub-module used to determine a target power at which to transmit each first SL reference signal in the first time-domain opportunity.

[0076] Optionally, the device 400: transmitting the N first SL reference signals to other terminals; Or, The terminal further includes a transceiver module for receiving the N first SL reference signals transmitted from the other terminals.

[0077] Optionally, the step of the first terminal determining a target power at which to transmit each first SL reference signal in the first time domain opportunity comprises: The first terminal determines a target power for transmitting N first SL reference signals to M terminals in the first time domain opportunity, wherein the target power for each first SL reference signal is determined by a path loss of a downlink path loss reference signal, and the path loss of the downlink path loss reference signal is determined by: The average RSRP received by M terminals, where M is a positive integer. The minimum RSRP value among the RSRPs received by M terminals The value is determined by at least one of the following:

[0078] Optionally, the device 400: When the sum of the target powers of the N first SL reference signals is greater than the maximum transmission power of the first terminal, transmitting N1 first SL reference signals to the M terminals, the N1 first SL reference signals being signals among the N first SL reference signals, and N1 being a positive integer less than N; transmitting the N1 first SL reference signals to M1 terminals, the M1 terminals being terminals among the M terminals, and M1 being a positive integer less than M; Transmitting N first SL reference signals to the M terminals, wherein a transmission power of a first first SL reference signal among the N first SL reference signals is lower than a target power of the first first SL reference signal, and the first first SL reference signal is a signal among the N first SL reference signals; The method further comprises an execution module adapted to execute one of the above.

[0079] Optionally, the M1 terminals The RSRP of a second terminal, which is one of the M terminals; the priority of the second terminal; The distance between the second terminal and the first terminal The value is determined by at least one of the following:

[0080] Optionally, the N1 first SL reference signals are determined by a priority of a third SL reference signal, and the third SL reference signal is any one of the N first SL reference signals.

[0081] Optionally, each of the first SL reference signal time domain opportunities includes an automatic gain control (AGC) symbol and a gap symbol.

[0082] Optionally, when the N first SL reference signals are transmitted to the first terminal by the other terminals, the received power at which the first terminal receives the N first SL reference signals is within a predetermined threshold range.

[0083] Optionally, the determination module 401: a third determination sub-module used by the first terminal to determine a PH at which the first SL reference signal is transmitted in a first resource pool at a second time domain opportunity; and a transmitting sub-module, used for transmitting the PH of the first SL reference signal to a target device, including at least one of a terminal and a network side device.

[0084] The power determination device 400 provided in the embodiment of the present application can implement each step implemented in the method embodiment of FIG. 2 and achieve the same technical effect, and detailed description thereof will be omitted here to avoid repetition.

[0085] The power determination device 400 in the embodiment of the present application may be an electronic device, for example, an electronic device with an operating system, or a component of an electronic device, for example, an integrated circuit or a chip. The electronic device may be a terminal or other devices other than a terminal. For example, the terminal may include, but is not limited to, the types of terminals 11 listed above, and the other devices may be servers, network-attached storage (NAS), etc. In the embodiment of the present application, there is no specific limitation.

[0086] Optionally, as shown in FIG. 5, an embodiment of the present application further provides a communication device 500 including a processor 501 and a memory 502 storing a program or command executable by the processor 501. For example, when the communication device 500 is a terminal, when the program or command is executed by the processor 501, each step of the embodiment of the power determination method shown in FIG. 2 above is realized, and the same technical effect can be achieved. In order to avoid repetition, detailed description will be omitted here.

[0087] An embodiment of the present application further provides a terminal, comprising a processor and a communication interface, the processor being adapted to determine power information for transmitting a target signal in a first resource pool, the target signal including a first sidelink (SL) reference signal, which is a reference signal for positioning, or a physical sidelink control channel (PSCCH), the first resource pool including at least one of a resource pool associated with the first SL reference signal and a resource pool unavailable for data transmission or a physical sidelink shared channel (PSSCH). This embodiment of the terminal corresponds to the embodiment of the terminal-side method described above, and the implementation steps and modes of the embodiment of the method can be applied to this embodiment of the terminal, and the same technical effects can be achieved. Specifically, FIG. 6 is a schematic diagram of a hardware configuration of a terminal implementing this embodiment of the present application.

[0088] The terminal 600 includes at least some elements such as, but not limited to, a radio frequency unit 601, a network module 602, an audio output unit 603, an input unit 604, a sensor 605, a display unit 606, a user input unit 607, an interface unit 608, a memory 609 and a processor 610.

[0089] As will be understood by those skilled in the art, the terminal 600 may further include a power source (e.g., a battery) for supplying power to each component, and the power source may be logically connected to the processor 610 via a power management system, which may further realize functions such as charge / discharge management and power consumption management. The configuration of the terminal shown in Figure 6 is not intended to limit the terminal, and the terminal may include more or fewer components than those shown, or a combination of some components, or a different component arrangement, and detailed description thereof will be omitted here.

[0090] It should be understood that in the embodiment of the present application, the input unit 604 may include a graphics processing unit (GPU) 6041 and a microphone 6042 for processing image data of still or video images captured by an image capture device (e.g., a camera) in a video capture mode or an image capture mode. The display unit 606 may include a display panel 6061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 607 includes at least one of a touch panel 6071 and other input devices 6072. The touch panel 6071 is also called a touch panel. The touch panel 6071 may include two parts: a touch detection device and a touch controller. The other input devices 6072 may include, but are not limited to, a physical keyboard, function buttons (e.g., volume control buttons, switch buttons, etc.), a trackball, a mouse, and a control lever. Detailed description thereof will be omitted here.

[0091] In the embodiment of the present application, the radio frequency unit 601 can receive downlink data from the network side device and then transmit the data to the processor 610 for processing. The radio frequency unit 601 can also transmit uplink data to the network side device. Typically, the radio frequency unit 601 includes, but is not limited to, an antenna, an amplifier, a receiver / transmitter, a coupler, a low-noise amplifier, a duplexer, etc.

[0092] The memory 609 can be used to store software programs or commands and various data. The memory 609 may mainly include a first storage area capable of storing an operating system, an application or command required for at least one function (e.g., audio playback function, image playback function, etc.), and a second storage area for storing data. The memory 609 may include volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. Here, the nonvolatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. The volatile memory may be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synch link dynamic random access memory (SLDRAM), and direct Rambus random access memory (DRRAM). Memory 609 in embodiments of the present application includes, but is not limited to, these and any other suitable types of memory.

[0093] The processor 610 may include one or more processing units, and optionally, an application processor that mainly processes operations related to an operating system, a user interface, and applications, and a modem processor that mainly processes wireless communication signals, such as a baseband processor, are integrated into the processor 610. It is understandable that the modem processor does not have to be integrated into the processor 610.

[0094] Wherein, the processor 610 is used for determining power information for transmitting a target signal in a first resource pool, the target signal including a first sidelink (SL) reference signal or a physical sidelink control channel (PSCCH); The first resource pool a resource pool associated with the first SL reference signal; Resource pools that are unavailable for data transmission or the physical sidelink shared channel (PSSCH). It includes at least one of the following.

[0095] The terminal 600 can implement each step implemented by the terminal in the embodiment shown in FIG. 2, and the specific details may refer to the description in the embodiment shown in FIG. 2, and detailed descriptions are omitted here.

[0096] The embodiments of the present application provide several readable storage media that store programs or commands, which, when executed by a processor, can realize each step of the embodiment of the power determination method shown in FIG. 2 above, and achieve the same technical effect. In order to avoid repetition, detailed descriptions are omitted here.

[0097] Wherein, the processor is the processor in the terminal described in the above embodiment. The readable storage medium includes a computer readable storage medium such as a computer read only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0098] The embodiment of the present application further provides a chip comprising a processor and a communication interface, the communication interface and the processor being coupled together, and the processor executing a program or command to realize each step of the embodiment of the power determination method shown in FIG. 2 above, and capable of achieving the same technical effect. In order to avoid repetition, detailed description will be omitted here.

[0099] It should be understood that the chips referred to in the embodiments of this application may also be referred to as system level chips, system chips, chip systems, or system-on-chips, etc.

[0100] The embodiments of the present application further provide a computer program / program product that can be stored in a storage medium and executed by at least one processor to realize each step of the embodiments of the above power determination method and achieve the same technical effects, and detailed descriptions thereof will be omitted here to avoid repetition.

[0101] An embodiment of the present application further provides a communication system including a first terminal that can be used to perform the steps of the power determination method of the embodiment shown in FIG. 2 above.

[0102] It should be noted that those skilled in the art can understand that the units and algorithm steps of each example described in the embodiments disclosed herein can be realized by electronic hardware or a combination of computer software and electronic hardware. Whether these functions are implemented in the form of hardware or software is determined by the specific application and design constraints of the technical solution. Experts can implement the described functions using different methods for each specific application, but it should not be understood that such implementation goes beyond the scope of the present disclosure.

[0103] Those skilled in the art will clearly understand that, for the sake of simplicity and brevity, the specific operating processes of the above-described systems, devices and units can be referred to the corresponding processes in the method embodiments, and will not be described here.

[0104] In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method can be realized in other forms. For example, the apparatus embodiments described above are merely illustrative, and the division of the units is merely a division of logical functions. In actual implementation, the division may be performed in other forms. For example, multiple units or components may be combined or integrated into another system, or some features may be omitted or not implemented. Furthermore, the illustrated or described couplings, direct couplings, or communication connections may be indirect couplings or communication connections via several interfaces, devices, or units, and may be in electrical, mechanical, or other forms.

[0105] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, and may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the objective of the solution of this embodiment according to actual needs.

[0106] Furthermore, each functional unit in each embodiment of the present disclosure may be integrated into a single processing unit, may exist physically independently, or may be integrated into two or more units into a single unit.

[0107] When the functions are realized in the form of software functional units and sold or used as independent products, they may be stored in a computer-readable storage medium. Based on this view, the technical solutions of the present disclosure, a portion that substantially contributes to the related art or a part of the technical solutions, can be implemented in the form of a software product, and the computer software product is stored in a storage medium and includes a plurality of instructions that cause a computer device (which may be a personal computer, a server, a network device, etc.) to execute all or part of the steps of the method according to each embodiment of the present disclosure. The storage medium includes various media capable of storing program code, such as a USB memory, a mobile hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

[0108] Those skilled in the art can understand that all or part of the processes for implementing the methods of the above embodiments can be completed by controlling related hardware through a computer program, and the program can be stored in a computer-readable storage medium, which, when executed, can include the processes of the above method embodiments. The storage medium can be a magnetic disk, an optical disk, a read-only memory (ROM), a random access memory (RAM), etc.

[0109] It should be noted that, as used herein, the terms "comprise," "consist of," or any other variation thereof, are intended to include a non-exclusive inclusion, whereby a process, method, article, or apparatus comprising a set of elements includes not only those elements but also other elements not expressly specified or elements inherent in such process, method, article, or apparatus. Unless otherwise specified, elements qualified by the phrase "comprise..." do not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element. It should also be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may include performing functions substantially simultaneously or in the reverse order, depending on such functionality. For example, the described method may be performed in a different order than described, and various steps may be added, omitted, or combined. Furthermore, features described with reference to one example may be combined in other examples.

[0110] From the description of the above embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be realized in the form of a combination of software and a necessary common hardware platform, and of course, they can also be realized by hardware, but in many cases the former is a more preferred embodiment. Based on this view, the technical solutions of the present application can be substantially embodied in the form of a computer software product, which is stored in a storage medium (e.g., ROM / RAM, magnetic disk, optical disk) and includes a plurality of commands that cause a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods described in each embodiment of the present application.

[0111] Although the examples of the present application have been described above with reference to the drawings, the present application is not limited to the above-mentioned specific embodiments, which are merely illustrative and not limiting. Based on the suggestions of the present application, many forms that a person skilled in the art can make without departing from the spirit of the present application and the scope of protection of the claims are all within the scope of protection of the present application.

Claims

1. The method includes determining, by a first terminal, power information for transmitting a target signal in a first resource pool, the target signal including a first sidelink (SL) reference signal that is a reference signal for positioning or a physical sidelink control channel (PSCCH); the PSCCH includes SCI associated with transmission of the first SL reference signal; The first resource pool a resource pool available for transmission of the first SL reference signal; and Resource pool unavailable for data transmission or the physical sidelink shared channel PSSCH A power determination method comprising:

2. The method of claim 1 , wherein the power information includes at least one of a target power and a power adjustment value.

3. The method of claim 2 , wherein the target power of the PSCCH is determined by the target power of the first SL reference signal.

4. The method of claim 3 , wherein the target power of the PSCCH is the same as the target power of the first SL reference signal.

5. The target power of the first SL reference signal is Setting information of the first SL reference signal, a first transmit power of a first SL reference signal calculated based on the SL path loss reference signal; a second transmission power of the first SL reference signal calculated based on the downlink path loss reference signal; The method of claim 2 , wherein the temperature is determined by at least one of:

6. The setting information is a target parameter for adjusting a power coefficient of the transmission power of the first SL reference signal; A predefined maximum transmit power [Equation 1] 、 The maximum transmission power at the channel busy rate CBR is [Equation 2] The method of claim 5 , comprising at least one of:

7. The target power of the first SL reference signal is [Equation 3] and [Equation 4] is the first transmit power of the first SL reference signal calculated based on the SL path loss reference signal, [Equation 5] 7. The method of claim 6, wherein Λ is a second transmit power of the first SL reference signal calculated based on the downlink path loss reference signal.

8. The CBR is a percentage of resources of the first SL reference signal in which the RSSI of the first SL reference signal measured in the first resource pool exceeds a second threshold; a ratio of subchannels in which the RSSI of the demodulation reference signal DMRS corresponding to the PSCCH measured in the first resource pool exceeds a sixth threshold; The method of claim 6, comprising one of: [Request Item 9] [Number 6] is calculated by the following formula: [Equation 7] That's all. [Equation 8] 、 [Equation 9] is the power adjustment parameter of the SL positioning reference signal, [Equation 10] is the number of RBs of the first SL reference signal in the i-th time domain occasion, [0011] The method of claim 7 , wherein: ∑ i = 1 i ... [Request Item 10] [Number 12] is calculated using the following formula: [0013] however, [0014] 、 [Equation 15] is an adjustment factor calculated from the downlink path loss reference signal, which is used to adjust the transmit power of the first SL reference signal; [0016] teeth [Equation 17] is the number of RBs of the first SL reference signal in the th time domain opportunity, [Equation 18] is the downlink path loss reference signal [Equation 19] where the downlink path loss reference signal is a Synchronization Signal (SS) corresponding to a Master Information Block (MIB); a physical broadcast channel (PBCH) block corresponding to the MIB; 8. The method of claim 7, further comprising: at least one of a reference signal (RS) used to determine a transmission power of a physical uplink shared channel (PUSCH) scheduled by a downlink control information (DCI) format 0_0.

11. The step of determining power information for transmitting a target signal in a first resource pool by the first terminal includes: determining a number N of first SL reference signals to be transmitted by the first terminal on a first time domain opportunity in a first resource pool, where N is a positive integer; determining a target power at which the first terminal transmits each first SL reference signal in the first time domain opportunity; The method of claim 2 , comprising:

12. After the step of the first terminal determining a target power at which to transmit each first SL reference signal in the first time domain opportunity, the first terminal receiving the N first SL reference signals transmitted from other terminals; The method of claim 11 further comprising:

13. 13. The method of claim 12, wherein when the N first SL reference signals are transmitted to the first terminal by the other terminal, the received power at which the first terminal receives the N first SL reference signals is within a predetermined threshold range.

14. 14. A terminal comprising a processor and a memory for storing programs or commands executable by the processor, the programs or commands being executed by the processor to implement the steps of the power determination method according to any one of claims 1 to 13.

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