Transmission power determination method, apparatuses sand storage medium

Abstract

The embodiments of the present disclosure provide a transmission power determination method, apparatuses and a storage medium, relating to the technical field of communications. The method comprises: acquiring power control parameter information, the power control parameter information comprising a first reference signal and a power control parameter associated with the first reference signal; on the basis of the power control parameter information and the transmission beam of a sidelink transmission, determining a power control parameter corresponding to the sidelink transmission; and, on the basis of the power control parameter corresponding to the sidelink transmission, determining the transmission power of the sidelink transmission based on downlink path loss power control.

Description

Transmission power determination method, device and storage medium

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the China Patent Office on December 15, 2023, with application number 202311734784.6 and invention name “Transmission power determination method, device and storage medium”. The entire contents of the Chinese patent application are incorporated herein by reference. Technical Field

[0003] The present disclosure relates to the field of communication technologies, and in particular to a method, device, and storage medium for determining transmission power. Background Art

[0004] In a sidelink (SL) communication system, when services need to be transmitted between user equipment (UE), they can be transmitted directly from the transmitting UE to the receiving UE via a sidelink, bypassing the base station. For short-range communication users capable of SL communication, SL not only conserves wireless spectrum resources but also reduces data transmission pressure on the core network, thereby reducing system resource usage, increasing the spectrum efficiency of the cellular communication system, reducing communication latency, and ultimately saving network operating costs.

[0005] However, the transmission power of the side link transmission determined in the related art based on the downlink (DL) path loss (PL) power control has low accuracy, resulting in the side link transmission power being too high or too low. Excessive transmission power may cause high energy consumption and interfere with other transmissions. Excessive transmission power may result in insufficient power to support decoding at the receiving end, and communication performance cannot be guaranteed.

[0006] Summary of the Invention

[0007] Embodiments of the present disclosure provide a transmission power determination method, apparatus, and storage medium for improving the accuracy of determining the transmission power of side link transmission based on downlink path loss power control.

[0008] In a first aspect, a method for determining transmission power is provided, the method comprising: obtaining power control parameter information, the power control parameter information comprising a first reference signal and a power control parameter associated with the first reference signal; determining a power control parameter corresponding to the side link transmission based on the power control parameter information and a transmit beam of the side link transmission; and determining a transmission power of the side link transmission based on downlink path loss power control based on the power control parameter corresponding to the side link transmission.

[0009] According to a second aspect, a communication device is provided, which includes: an acquisition unit for acquiring power control parameter information, the power control parameter information including a first reference signal and a power control parameter associated with the first reference signal; a processing unit for determining the power control parameter corresponding to the side link transmission based on the power control parameter information and the transmit beam of the side link transmission; the processing unit is also used to determine the transmission power of the side link transmission based on the downlink path loss power control based on the power control parameter corresponding to the side link transmission.

[0010] In a third aspect, a communication device is provided, comprising: a processor and a memory; the memory stores instructions executable by the processor; when the processor is configured to execute the instructions, the communication device implements the method provided in the first aspect above.

[0011] In a fourth aspect, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores computer instructions. When the computer instructions are executed on a computer, the computer executes the method provided in the first aspect.

[0012] In a fifth aspect, a computer program product comprising computer instructions is provided, which, when executed on a computer, causes the computer to execute the method provided in the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the technical solution of the present invention and constitute a part of the specification. Together with the embodiments of the present disclosure, they are used to explain the technical solution of the present invention and do not constitute a limitation to the technical solution of the present invention.

[0014] FIG1 is a schematic structural diagram of a communication system provided by an embodiment of the present disclosure;

[0015] FIG2 is a schematic diagram of a flow chart of a method for determining transmission power provided by an embodiment of the present disclosure;

[0016] FIG3 is a schematic diagram of the composition of a communication device provided by an embodiment of the present disclosure;

[0017] FIG4 is a schematic structural diagram of a communication device provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0018] The following will be combined with the accompanying drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the embodiments described are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present disclosure.

[0019] Unless the context requires otherwise, throughout the specification and claims, the term "comprise" and its other forms, such as the third person singular form "comprises" and the present participle form "comprising", are to be interpreted as open and inclusive, that is, "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "example", "specific example" or "some examples" are intended to indicate that the particular features, structures, materials or characteristics associated with the embodiment or example are included in at least one embodiment or example of the present disclosure. The schematic representation of the above terms does not necessarily refer to the same embodiment or example. In addition, the particular features, structures, materials or characteristics may be included in any one or more embodiments or examples in any appropriate manner.

[0020] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout this disclosure, unless otherwise specified, "plurality" means two or more.

[0021] In the embodiments of the present disclosure, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present disclosure should not be interpreted as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific manner.

[0022] Additionally, the use of “based on” is meant to be open and inclusive, as a process, step, calculation, or other action “based on” one or more stated conditions or values ​​may, in practice, be based on additional conditions or values ​​beyond those stated.

[0023] Sidelink communication can also be called sidelink communication, direct communication, sidelink communication, PC5 interface link communication, or inter-terminal device link communication. Sidelink communication is wireless communication directly between multiple UEs (for example, two UEs). In sidelink communication, multiple UEs that are geographically close to each other can communicate directly. Data transmission in direct communication is different from typical cellular network communication. Typical cellular network communication includes uplink (UL) transmission (for example, UE sends data to base station) and downlink transmission (for example, base station sends data to UE). The interface between base station and UE is usually called Uu interface; but in sidelink communication, data is sent directly from the transmitting UE to the receiving UE via an air interface such as PC5 interface, without passing through any network equipment. Sidelink communication methods include but are not limited to device-to-device (D2D) communication, such as early warning communication for disasters such as earthquakes and fires, and vehicle-to-everything (V2X) communication, such as remote driving and unmanned driving. Side-link communication can provide multiple advantages, such as reducing the data transmission load on the core network, system resource consumption, transmission power consumption and network operation cost, saving wireless spectrum resources and improving the spectrum utilization of cellular wireless network systems.

[0024] There are currently two air interface technologies (i.e., radio access technologies (RAT)) for SL communications: SL communications using the fourth-generation mobile communication technology (4G) long term evolution (LTE) and SL communications using the fifth-generation mobile communication technology (5G) new radio (NR) technology. In the future, SL communications using the sixth-generation mobile communication technology (6G) may emerge.

[0025] In the authorized spectrum, for UEs based on sidelink transmission within the coverage of the cellular network, the sidelink transmission must ensure that it does not interfere with the uplink transmission of the Uu interface (or Uu link) as much as possible, so power control can be performed based on the DL path loss of the base station. For unicast physical sidelink shared channel (PSSCH) transmission, in order to reduce energy consumption (i.e., save energy) and reduce interference with other transmissions, the transmitting UE can perform power control based on the SL path loss of the sidelink transmission between the transmitting UE and the receiving UE. Power control based on DL path loss and SL path loss can be used separately, simultaneously, or neither.

[0026] For example, the transmitting UE determines the transmit power of the physical sidelink control channel (PSCCH)-PSSCH on the symbol without PSCCH transmission in the transmission opportunity i as: PSSCH (i) = min(P CMAX ,P MAX,CBR ,min(P PSSCH,D (i),P PSSCH,SL (i))); where P PSSCH (i) indicates the transmission power of PSSCH when no PSCCH is transmitted at transmission opportunity i; P CMAX Indicates the maximum power of UE; P MAX,CBB Indicates the maximum transmission power of the UE under the channel busy ratio (CBR). If P MAX,CBR If it is not provided or configured to the terminal, then P MAX,CBR =P CMAX ;P PSSCH,D (i) represents the transmission power based on downlink path loss power control, P PSSCH,SL (i) represents the transmission power based on the side link loss power control. The default unit for transmission power is dBm and is not further explained below.

[0027] It can be seen from the above formula that P CMAX 、P MAX,CBR 、P PSSCH,D (i) and P PSSCH,SL In (i), a minimum value is determined as the transmission power of the PSSCH transmitted in the symbols where the PSCCH is not transmitted.

[0028] For P PSSCH,D (i) If the power control parameter d1-P0-PSSCH-PSCCH is provided or configured (i.e., if the receiving end target power based on downlink path loss power control is provided or configured to the UE), then PPSSCH,D (i) can be expressed as follows: If the power control parameter d1-P0-PSSCH-PSCCH is not provided or not configured, then P PSSCH,D (i) can be expressed as follows: PSSCH,D (i) = min(P CMAX ,P MAX,CBR ); where P O,D It is the value provided by the power control parameter dl-P0-PSSCH-PSCCH, which can be understood as the receiving end target power (or target received power) based on downlink path loss power control; α D Indicates the compensation factor for downlink path loss; PL D represents the downlink path loss, and μ represents the subcarrier spacing configuration, that is, the subcarrier spacing configuration corresponding to the bandwidth part (BWP) where the PSSCH / PSCCH is located (or the subcarrier spacing configuration used by the PSSCH / PSCCH); Indicates the number of resource blocks (RBs) corresponding to PSSCH-PSCCH transmission opportunity i.

[0029] For calculating the downlink path loss PL D The reference signal of the DL path loss can be determined as follows: when the UE is configured to monitor the physical downlink control channel (PDCCH) to detect the downlink control information (DCI) format 0_0 in the serving cell, the reference signal for calculating the DL path loss used when determining the transmission power of the physical uplink shared channel (PUSCH) scheduled by DCI format 0_0 is used as the reference signal for calculating the downlink path loss PL D When the UE is not configured to monitor the PDCCH to detect the DCI format 0_0 in the serving cell, the synchronization signal block (SSB) of the master information block (MIB) obtained by the UE is used as the reference signal for calculating the downlink path loss PL D The reference signal.

[0030] For P PSSCH,SL(i) If the power control parameter sl-P0-PSSCH-PSCCH is provided or configured (i.e., if the receiving end target power based on the side link path loss power control is provided or configured to the UE), and the side link control information (SCI) format of the scheduled PSSCH contains a transmission type field indicating unicast, or the SCI format of the scheduled PSSCH is SCI format 2-C, then P PSSCH,SL (i) can be expressed as follows: Otherwise, P PSSCH,SL (i) can be expressed as follows: PSSCH,SL (i) = min(P CMAX ,P PSSCH,D (i)); where P O,SL It is the value provided by the power control parameter sl-P0-PSSCH-PSCCH, which can be understood as the target power of the receiving end based on the side link loss power control; α SL Indicates the compensation factor of the edge link loss; PL SL Indicates the edge link loss.

[0031] In PSCCH-PSSCH transmission opportunity i, on the symbols transmitting PSSCH and PSCCH, the transmission power of PSSCH is: Among them, P PSSCH2 (i) indicates the transmission power of PSSCH when PSCCH is transmitted at transmission opportunity i; Indicates the number of RBs corresponding to PSCCH transmission in PSCCH-PSSCH transmission opportunity i.

[0032] The transmission power of PSCCH in PSCCH-PSSCH transmission opportunity i is:

[0033] SL communication can operate in the millimeter wave frequency band (for example, frequency range 2 (FR 2)). Since the wavelength of the millimeter wave frequency band is short and has high propagation loss, the introduction of beams can overcome the path loss caused by high-frequency transmission and increase the coverage of SL communication. Currently, the 3rd generation partnership project (3GPP) has established a project on beam management for SL unicast communication. However, it can be seen from the above content that in the related technology, the SL power control parameters do not take into account the influence of the beam, especially the power control parameters based on downlink path loss do not take into account the influence of the beam, resulting in the currently determined side link transmission based on downlink path loss power control. The transmission power is low in accuracy, making the side link transmission power too high or too low. Excessive transmission power may result in high energy consumption and interfere with other transmissions. Excessive transmission power may result in insufficient power to support decoding at the receiving end, and communication performance cannot be guaranteed.

[0034] Based on this, the embodiments of the present disclosure provide a transmission power determination method, device and storage medium, in which the transmission power of the side link transmission based on downlink path loss power control is determined based on the power control parameters corresponding to the side link transmission, and the power control parameters corresponding to the side link transmission are determined based on the power control parameter information and the transmit beam of the side link transmission. That is, when determining the transmission power of the side link transmission based on downlink path loss power control, the transmit beam of the side link transmission is taken into account, thereby improving the accuracy of determining the transmission power of the side link transmission based on downlink path loss power control, thereby achieving the goal of reducing energy consumption and reducing interference to other transmissions while ensuring communication performance.

[0035] The following describes the solutions of the embodiments of the present application with reference to the accompanying drawings.

[0036] The technical solutions provided by the embodiments of the present disclosure can be applied to various mobile communication networks, for example, SL communication networks using 5G NR, SL communication networks using 4G LTE technology, SL communication networks using 6G that may appear in the future, and other future mobile communication networks or SL communication networks in multiple communication convergence systems, etc. The embodiments of the present disclosure are not limited to this.

[0037] FIG1 is a schematic diagram of the structure of a communication system provided by an embodiment of the present disclosure. As shown in FIG1 , the communication system 10 includes multiple base stations (e.g., base station 21 and base station 22) and multiple terminals (e.g., terminal 31, terminal 32, terminal 33, and terminal 34). The multiple base stations and the multiple terminals may be connected via a wired network or a wireless network. The wired network or wireless network may include routers, switches, or other devices that facilitate communication between the multiple base stations and the multiple terminals, which is not limited by the embodiments of the present disclosure.

[0038] In some embodiments, a base station is used to provide wireless access services to multiple terminals. Specifically, a base station provides a service coverage area (also known as a cell). Terminals within this area can communicate with the base station via wireless signals, thereby receiving the wireless access services provided by the base station. The service coverage areas of base stations may overlap, and terminals within the overlapping areas can receive wireless signals from multiple base stations.

[0039] In some embodiments, each of the multiple base stations can be connected to multiple terminals. For example, base station 21 is connected to terminal 31 and terminal 32. Terminal 31 and terminal 32 can be located in the same cell or in different cells. In other words, a base station can provide network services to terminals in one cell or to terminals in multiple cells simultaneously.

[0040] In some embodiments, each of the multiple base stations (e.g., base station 21) can be an evolution nodeB (eNB), a next-generation nodeB (gNB), a transmission receive point (TRP), a transmission point (TP), an access point (AP), or any other access node. Based on the size of the service coverage area provided, base stations can be further divided into macro base stations for providing macro cells, micro base stations for providing pico cells, and femto base stations for providing femto cells. With the continuous evolution of wireless communication technology, future base stations may also adopt other names.

[0041] In some embodiments, each of the multiple terminals (e.g., terminal 31) may be a device with wireless transceiver capabilities, such as a mobile phone, a tablet computer, a wearable device, an in-vehicle device, an augmented reality (AR) / virtual reality (VR) device, a laptop computer, an ultra-mobile personal computer (UMPC), a netbook, a personal digital assistant (PDA), etc. The embodiments of the present invention do not limit the type of terminal.

[0042] In some embodiments, terminals can communicate with each other, for example, terminal 31 in Figure 1 performs SL communication with terminal 32, and terminal 33 performs SL communication with terminal 34. Communication between terminals refers to communication directly between two terminals. Taking device-to-device (D2D) communication as an example, a terminal performing D2D communication can be called a D2D terminal, and the link between two terminals performing D2D communication can be called a pair of D2D links. The two terminals in a pair of D2D links can be receivers and transmitters to each other. In one transmission, one terminal can be a transmitter and the other terminal can be a receiver. If both terminals support simultaneous sending and receiving functions, each D2D terminal can be both a transmitter and a receiver at the same time.

[0043] It should be understood that Figure 1 is an exemplary structural diagram, and the number of devices included in the communication system shown in Figure 1 is not limited, for example, the number of base stations is not limited, and the number of terminals is not limited. Furthermore, in addition to the devices shown in Figure 1, the communication system shown in Figure 1 may also include other devices, which is not limited.

[0044] Next, as shown in FIG2 , an embodiment of the present disclosure provides a method for determining transmission power, which can be applied to a terminal. The terminal can be any of the terminals shown in FIG1 , such as terminal 31 . The method can include the following steps.

[0045] S101. Obtain power control parameter information.

[0046] In some embodiments, when a terminal needs to determine a transmission power for side link transmission based on downlink path loss power control, the terminal obtains power control parameter information, wherein the power control parameter information includes a first reference signal and a power control parameter associated with the first reference signal.

[0047] As an example, the terminal obtains the power control parameter information by receiving the power control parameter information sent by the base station (or the network side). Alternatively, the terminal obtains the power control parameter information by receiving power control parameter signaling sent by the base station (or the network side), where the power control parameter signaling carries the power control parameter information.

[0048] As another example, preconfigured or predefined power control parameter information is stored in a memory of the terminal, and the terminal obtains the power control parameter information, which may be that the terminal obtains the power control parameter information from the memory of the terminal.

[0049] In some embodiments, the first reference signal includes at least one of the following: a downlink channel state information reference signal (CSI-RS); a downlink channel state information interference measurement signal (CSI-IM); a downlink demodulation reference signal (DMRS); an uplink demodulation reference signal; a sounding reference signal (SRS); a phase tracking reference signal (PTRS); a random access channel (RACH); a downlink synchronization signal block (synchronization signal / physical broadcast channel (PBCH) block, SSB); a positioning reference signal (PRS); a sidelink channel state information reference signal; a sidelink demodulation reference signal; a sidelink phase tracking reference signal; a sidelink positioning reference signal; and a sidelink synchronization signal block (S-SSB).

[0050] In some embodiments, the power control parameter associated with the first reference signal includes at least one of the following: a target received power, a compensation factor for downlink path loss, and a second reference signal for determining downlink path loss.

[0051] In some embodiments, the power control parameter information includes at least one first reference signal and a power control parameter associated with each of the at least one first reference signal.

[0052] For example, taking the reference signal as RS as an example, the power control parameter information may include the first reference signal RS k and the first reference signal RS k The associated power control parameters include the parameters used to calculate the transmission power required based on the downlink path loss, including the target received power P O,D,k , compensation factor α for downlink path loss D,k and a second reference signal P for determining the downlink path loss D,k, where k = 1, 2, ..., K, where K is a positive integer greater than 0, K represents the number of first reference signals, and the subscript k in the power control parameter represents the power control parameter and the first reference signal RS k It should be noted that, when the power control parameter information does not include the downlink path loss compensation factor, the downlink path loss compensation factor takes a default value, which may be pre-configured or pre-defined, for example, α D,k =1.

[0053] In some embodiments, the first reference signal is associated with a power control parameter on each time domain resource. For example, the power control parameter associated with the first reference signal includes a target received power and a compensation factor for downlink path loss. Based on this, the power control parameter information includes the first reference signal RS k And time domain resources TR n The corresponding first reference signal RS k Associated target received power P O,D,k,n , compensation factor α for downlink path loss D,k,n , or the power control parameter information includes a first reference signal RS k And in the time domain resource TR n The first reference signal RS k Associated target received power P O,D,k,n and the compensation factor α for downlink path loss D,k,n Wherein, k=1,2,…,K,n=1,2,…,N, N is a positive integer, and N represents the number of time domain resources. That is, each combination of time domain resource and first reference signal is associated with a set of power control parameters, power control parameter P O,D,k,n and α D,k,n The subscripts k and n represent the power control parameters and time domain resources TR n and the first reference signal RS k For another example, taking the power control parameters associated with the first reference signal including the target received power, the compensation factor of the downlink path loss and the second reference signal for determining the downlink path loss as an example, the power control parameter information includes the first reference signal RS k And in the time domain resource TR b The first reference signal RS k Associated target received power P O,D,k,n , compensation factor α for downlink path loss D,k,n and a second reference signal R for determining the downlink path loss S,k,n , power control parameter P O,D,k,n , α D,k,n and R D,k,n The subscripts k and n represent the power control parameters and time domain resources TR n and the first reference signal RSk Association (or correspondence).

[0054] For example, assuming TR n It includes one or more time slots, K=2, N=2, TR1 consists of time slots with even indexes, and TR2 consists of time slots with odd indexes. Then the power control parameter associated with the first reference signal RS1 corresponding to TR1 is P O,D,1,1 and α D,1,1 , the power control parameter associated with the first reference signal RS2 corresponding to TR1 is P O,D,2,1 and α D,2,1 ; The power control parameter associated with the first reference signal RS1 corresponding to TR2 is P O,D,1,2 and α D,1,2 , the power control parameter associated with the first reference signal RS2 corresponding to TR2 is P O,D,2,2 and α D,2,2 .TR n It may also include the resources occupied by SL transmission in one or more time slots.

[0055] In some embodiments, the second reference signal used to determine the downlink path loss includes at least one of the following: a downlink channel state information reference signal; a downlink channel state information interference measurement signal; a downlink demodulation reference signal; and a downlink synchronization signal block.

[0056] In some embodiments, the power control parameter information indicates the first reference signal through at least one of the following: the transmission configuration indicator state (TCI state) of the communication link between the terminal and the network side; the transmission configuration indicator state of the edge link; and the reference signal index.

[0057] In some embodiments, the network side may refer to a base station, a higher-layer entity, or other network-side entities, and the TCI state between the terminal and the network side may refer to the TCI state of the Uu link.

[0058] In some embodiments, the terminal may report the side link reference signal resource configuration of the terminal to the network side, or the network side may configure the side link reference signal resource for the terminal.

[0059] In some embodiments, the network side provides time domain resource configuration for the UE, where the time domain resource configuration is used to indicate one or more time domain resources and the index of each time domain resource, and the power control parameter information indicates at least one time domain resource by indicating at least one time domain resource index; or the power control parameter information directly indicates at least one time domain resource.

[0060] In some embodiments, the network side sends power control parameter information to the terminal through high-layer signaling, where the high-layer signaling can be radio resource control (RRC) signaling, medium access control (MAC) signaling, or system messages, etc., which is not limited in the embodiments of the present disclosure.

[0061] S102: Determine a power control parameter corresponding to the side link transmission based on the power control parameter information and the transmit beam of the side link transmission.

[0062] The transmit beam for side link transmission is the transmit beam used by the terminal for side link transmission. Side link transmission includes the physical side link shared channel (PSSCH) / physical side link control channel (PSCCH), or S-SSB, or other side link signals or side link channels.

[0063] In some embodiments, determining the power control parameter corresponding to the side link transmission based on the power control parameter information and the transmit beam of the side link transmission may be performed based on a relationship between the transmit beam of the side link transmission and a beam corresponding to a first reference signal included in the power control parameter information. The beam corresponding to the first reference signal refers to a beam used when sending or receiving the first reference signal.

[0064] As an example, the beam corresponding to the first reference signal includes at least one of the following: when the first reference signal is a downlink reference signal, the beam corresponding to the first reference signal is a receiving beam of the first reference signal; when the first reference signal is an uplink reference signal or a side link reference signal, the beam corresponding to the first reference signal is a transmitting beam of the first reference signal.

[0065] As an example, based on the relationship between the transmit beam of the side link transmission and the beam corresponding to the first reference signal included in the power control parameter information, the power control parameter corresponding to the side link transmission is determined. This may be to use the power control parameter associated with the first reference signal corresponding to the beam that has the largest overlap with the transmit beam coverage area of ​​the side link transmission among the beams corresponding to the first reference signal as the power control parameter corresponding to the side link transmission. Alternatively, the power control parameter associated with the first reference signal corresponding to the beam that has the smallest angle with the transmit beam of the side link transmission among the beams corresponding to the first reference signal may be used as the power control parameter corresponding to the side link transmission. This is not limited in the embodiments of the present disclosure.

[0066] For example, it is assumed that the transmission beam of the side link is Beam tx , the first reference signal RS k The corresponding beam is Beam k , then we can get the beam k Choose Beam tx Beam with the largest spatial overlap in coverage area m The power control parameter associated with the corresponding reference signal is used as the power control parameter corresponding to the side link transmission. Assume that the first reference signal RS k Medium reference signal RS m Corresponding beam and Beam tx The coverage area overlaps the most in space, so the reference signal RS can be m The associated power control parameters are used as the power control parameters corresponding to the side link transmission.

[0067] When the beams corresponding to the first reference signal do not spatially overlap with the transmit beams of the side link transmission, the power control parameters corresponding to the side link transmission are default power control parameters. The default power control parameters include at least one of the following: a configured power control parameter; a preconfigured power control parameter; a predefined power control parameter; a power control parameter associated with a specific first reference signal included in the power control parameter information; or a specific power control parameter included in the power control parameter information.

[0068] As another example, the specific first reference signal or the specific power control parameter may be determined through preconfiguration or predefinition, or may be indicated through indication information. For example, the predefined specific first reference signal is the first reference signal with the smallest index among the first reference signals included in the power control parameter information; the predefined specific power control parameter is the first parameter among each power control parameter included in the power control parameter information. For example, if the power control information includes three target received powers and three downlink path loss compensation factors, the specific power control parameter is the first target received power among the three target received powers and the first downlink path loss compensation factor among the three downlink path loss compensation factors. The indication information may or may not be included in the power control parameter information.

[0069] As another example, determining the power control parameter corresponding to the side link transmission based on the relationship between the transmit beam of the side link transmission and the beam corresponding to the first reference signal included in the power control parameter information may be to determine whether a target first reference signal that satisfies a preset relationship with the transmit beam of the side link transmission exists in the first reference signal included in the power control parameter information. If a target first reference signal that satisfies a preset relationship with the transmit beam of the side link transmission exists in the first reference signal included in the power control parameter information, the power control parameter corresponding to the side link transmission is determined based on the power control parameter associated with the target first reference signal; if the target first reference signal does not exist in the first reference signal included in the power control parameter information, the power control parameter corresponding to the side link transmission is determined to be a default power control parameter.

[0070] Among them, taking the beam corresponding to the first reference signal as the first beam as an example, the preset relationship includes at least one of the following: the first beam and the transmit beam overlap in space, the area of ​​spatial overlap between the first beam and the transmit beam is greater than or equal to the first threshold, the ratio between the area of ​​spatial overlap between the first beam and the transmit beam and the coverage area of ​​the transmit beam is greater than or equal to the second threshold, the ratio between the area of ​​spatial overlap between the first beam and the transmit beam and the coverage area of ​​the first beam is greater than or equal to the third threshold, the angle between the first beam and the transmit beam is less than or equal to the fourth threshold, and the first beam and the transmit beam have the same spatial domain filtering. The first threshold, the second threshold, the third threshold, and the fourth threshold can all be configured, preconfigured, or predefined, and the embodiments of the present disclosure do not limit this.

[0071] For example, assuming that the first reference signal RS k The corresponding beam is Beam k , the transmitting beam of the side link transmission is Beam tx , usually the transmission beams of PSCCH and PSSCH are the same, which can be obtained from RS k (k=1,2,…,K) to determine whether there is a Beam tx The target first reference signal that satisfies the preset relationship between the two. For example, k Determine if there is a connection with Beam tx The target first reference signal with the same spatial filtering. Assume RS k Medium RS m Corresponding beam m With Beam tx With the same spatial filtering, RS can be determined m As the target first reference signal, RS m The associated power control parameters are used as the power control parameters corresponding to the side link transmission. Assume that RSk There is no Beam tx The target first reference signal with the same spatial domain filtering can determine the power control parameter corresponding to the edge link transmission as the default power control parameter. For example, the default power control parameter can be RS k The power control parameters associated with a specific first reference signal (eg, RS1) in the .

[0072] As a possible example, the power control parameter corresponding to the side link transmission is determined based on the power control parameter associated with the target first reference signal. The power control parameter associated with the target first reference signal can be determined as the power control parameter corresponding to the side link transmission, that is, the power control parameter corresponding to the side link transmission is determined as the power control parameter associated with the target first reference signal.

[0073] In some embodiments, when there are multiple target first reference signals in the first reference signal included in the power control parameter information, the power control parameter associated with one target first reference signal among the multiple target first reference signals can be determined as the power control parameter corresponding to the side link transmission.

[0074] As an example, a target first reference signal can be any one of multiple target first reference signals, or a target first reference signal can be the target first reference signal with the highest priority among multiple target first reference signals. The priority can be determined based on the overlap area between the beam corresponding to the target first reference signal and the transmit beam. Alternatively, the priority can be determined by the terminal, or the terminal can select a target first reference signal from multiple target first reference signals. This is not limited in the present embodiment.

[0075] In some embodiments, the first reference signal is associated with a power control parameter on each time domain resource. Based on this, the power control parameter associated with the first reference signal can be the power control parameter associated with the first reference signal on the time domain resource. According to the power control parameter associated with the target first reference signal, the power control parameter corresponding to the side link transmission is determined. It can be that the power control parameter associated with the time domain resource to which the time slot (or opportunity, or time resource) of the side link transmission belongs among the power control parameters associated with the target first reference signal is determined as the power control parameter corresponding to the side link transmission. That is, the power control parameter associated with the time domain resource to which the time slot (or opportunity, or time resource) of the side link transmission belongs and the target first reference signal is determined as the power control parameter corresponding to the side link transmission.

[0076] S103: Determine a transmission power of the side link transmission based on downlink path loss power control based on a power control parameter corresponding to the side link transmission.

[0077] The following describes several examples of how to determine the transmission power of the side link transmission based on downlink path loss power control based on the power control parameters corresponding to the side link transmission.

[0078] Example 1: The power control parameter associated with the first reference signal includes a target received power and a compensation factor for a downlink path loss.

[0079] As an example, the power control parameter corresponding to the edge link transmission is the first reference signal RS m Taking the power control parameter associated with the target first reference signal as an example, the transmission power of the side link transmission based on downlink path loss power control is determined based on the power control parameter corresponding to the side link transmission, which can be shown as the following formula: Among them, P PSSCH,D (i) is the transmission power of the side link based on downlink path loss power control, P O,D,m is the first reference signal RS m The target received power in the associated power control parameters, represents the number of resource blocks corresponding to the edge link transmission opportunity i, α D,m Represents the first reference signal RS m The compensation factor for downlink path loss in the associated power control parameters, PL D represents the downlink path loss, and μ represents the subcarrier spacing configuration.

[0080] In some embodiments, when the terminal does not obtain the power control parameter information, that is, when the power control parameter information is not configured, P PSSCH,D (i) = min(P CMAX ,P MAX,CBR );P CMAX Indicates the maximum power of the terminal; P MAX,CBR Indicates the maximum transmission power of the terminal under CBR.

[0081] In some embodiments, when the terminal does not obtain the power control parameter information, if the terminal is provided with the receiving end target power based on the downlink path loss power control (for example, the terminal is provided with the high-layer parameter dl-P0-PSSCH-PSCCH), then Otherwise (that is, when the terminal does not obtain the power control parameter information, the terminal is not provided with the receiving end target power based on the downlink path loss power control), then P PSSCH,D (i) = min(P CMAX ,P MAX,CBR ).

[0082] As another example, when the power control parameter associated with the first reference signal includes the target received power and the compensation factor of the downlink path loss, and the power control parameter associated with the first reference signal is the power control parameter associated with the first reference signal on the time domain resource (that is, the power control parameter associated with the first reference signal is the power control parameter associated with the first reference signal and the time domain resource), then based on the power control parameter corresponding to the side link transmission, the transmission power of the side link transmission based on the downlink path loss power control can be determined as shown in the following example.

[0083] For example, the first reference signal included in the power control information parameter has a target first reference signal RS that satisfies a preset relationship with the transmit beam of the side link transmission. m For example, the power control parameter corresponding to the edge link transmission is the power control parameter associated with the target first reference signal, and the time domain resource TR to which the time slot (or opportunity, or time resource) of the edge link transmission belongs t The associated power control parameter (ie, the power control parameter corresponding to the side link transmission is the power control parameter corresponding to the first reference signal RS m and time domain resources TR t associated power control parameters), TR t It is the time domain resource TR n ,n=1,2,…,N,a time domain resource. Based on this, the transmission power P of the side link transmission based on downlink path loss power control PSSCH,D (i) can be expressed as follows: Among them, P O,D,m,t For time domain resources TR t and the first reference signal RS m The target received power in the associated power control parameter, α D,m,t For time domain resources TR t and the first reference signal RS m The compensation factor for downlink path loss in the associated power control parameters.

[0084] In some embodiments, the time slot (or opportunity, or time resource) in which the terminal does not expect the side link transmission does not belong to any time domain resource TR n ; Or, the terminal expects all time domain resources TR n The union of all time slots in the edge link resource pool or the time slots (or opportunities, or time resources) of the edge link transmission in all time slots, n = 1, 2, ..., N; or, the time slots (or opportunities, or time resources) of the edge link transmission do not belong to any time domain resource TR n In the case of PSSCH,D (i) = min(P CMAX ,P MAX,CBR); or, the time slot (or opportunity, or time resource) of the side link transmission does not belong to any time domain resource TR n In the case of , if the terminal is provided with the receiving end target power based on the downlink path loss power control, the transmission power P of the side link transmission based on the downlink path loss power control PSSCH,D (i) can be expressed as follows: The time slot (or opportunity, or time resource) of the side link transmission does not belong to any time domain resource TR n , and the terminal is not provided with the receiving end target power based on downlink path loss power control, then P PSSCH,D (i) = min(P CMAX ,P MAX,CBR ).

[0085] Example 2: The power control parameters associated with the first reference signal include a target received power, a compensation factor for a downlink path loss, and a second reference signal for determining the downlink path loss.

[0086] In some embodiments, the power control parameter information includes a first reference signal RS k and the first reference signal RS k Associated target received power P O,D,k , compensation factor α for downlink path loss D,k and a second reference signal R for determining the downlink path loss D,k , where k = 1, 2, ..., K, and K is a positive integer greater than 2. It should be noted that when the power control parameter information does not include the downlink path loss compensation factor, the downlink path loss compensation factor takes a default value, which may be preconfigured or predefined, for example, α D,k =1.

[0087] As an example, the first reference signal included in the power control information parameter has a target first reference signal RS that satisfies a preset relationship with the transmit beam of the side link transmission. m For example, the power control parameter corresponding to the edge link transmission is the target first reference signal RS m The associated power control parameters (i.e. P O,D,m , α D,m , R D,m ). Therefore, the transmission power P of the side link transmission based on the downlink path loss power control PSSCH,D (i) can be expressed as follows: Among them, R D,m is the first reference signal RS m The associated second reference signal, PL D (R D,m ) is based on the second reference signal RD,m The calculated downlink path loss, where m is a positive integer less than or equal to K.

[0088] As another example, the power control parameters associated with the first reference signal include the target received power, the compensation factor of the downlink path loss and the second reference signal for determining the downlink path loss, and the power control parameters associated with the first reference signal are the power control parameters associated with the first reference signal on the time domain resources, then based on the power control parameters corresponding to the side link transmission, the transmission power of the side link transmission based on the downlink path loss power control can be determined as shown in the following example.

[0089] For example, the first reference signal included in the power control information parameter has a target first reference signal RS that satisfies a preset relationship with the transmit beam of the side link transmission. m For example, the power control parameter corresponding to the edge link transmission is the power control parameter associated with the target first reference signal, and the time domain resource TR to which the time slot or opportunity of the edge link transmission belongs t Based on this, the transmission power P of the side link transmission based on the downlink path loss power control is PSSCH,D (i) can be expressed as follows: Among them, R D,m,t For time domain resources TR t and the first reference signal RS m The associated second reference signal, PL D (R D,m,t ) is based on the second reference signal R D,m,t Calculated downlink path loss.

[0090] Based on the embodiment shown in Figure 2, in the embodiment of the present disclosure, the transmission power of the side link transmission based on the downlink path loss power control is determined based on the power control parameters corresponding to the side link transmission, and the power control parameters corresponding to the side link transmission are determined based on the power control parameter information and the transmit beam of the side link transmission. That is, when determining the transmission power of the side link transmission based on the downlink path loss power control, the transmit beam of the side link transmission is taken into account, which improves the accuracy of determining the transmission power of the side link transmission based on the downlink path loss power control, thereby achieving the goal of reducing energy consumption and reducing interference to other transmissions while ensuring communication performance.

[0091] The following describes a method for determining transmission power provided by an embodiment of the present disclosure with reference to an example.

[0092] Exemplarily, the terminal determines that the transmission power of PSSCH on the symbol without PSCCH transmission in the side link (PSCCH-PSSCH) transmission opportunity i is: P PSSCH(i) = min(P CMAX ,P MAX,CBR ,min(P PSSCH,D (i),P PSSCH,SL (i))); where P PSSCH (i) indicates the transmission power of PSSCH when PSCCH is not transmitted at transmission opportunity i; P CMAX Indicates the maximum power of the terminal; P MAX,CBR Indicates the maximum power of the terminal under CBR. If P MAX,CBR If not provided or configured, P MAX,CBR =P CMAX ;P PSSCH,D (i) represents the transmission power based on downlink path loss power control; P PSSCH,SL (i) represents the transmission power based on the side link loss power control.

[0093] Transmission power P based on downlink path loss power control PSSCH,D (i) can be determined based on the embodiment shown in FIG2 above. PSSCH,SL (i) If the power control parameter sl-P0-PSSCH-PSCCH is provided or configured (i.e., if the receiving end target power based on the side link loss power control is provided or configured to the UE), and the SCI format of the scheduled PSSCH contains a transmission type field indicating unicast or is SCI format 2-C, then P PSSCH,SL (i) = P O,SL + Otherwise, P PSSCH,SL (i) = min(P CMAX ,P PSSCH,D (i)).

[0094] Among them, P O,SL It is the value provided by the parameter sl-P0-PSSCH-PSCCH, which can be understood as the receiving end target power based on the side link loss power control; α SL Indicates the compensation factor of the edge link loss; PL SL Indicates the edge link loss.

[0095] In PSCCH-PSSCH transmission opportunity i, the transmit power of PSSCH on the symbols transmitting PSSCH and PSCCH is: Among them, P PSSCH2 (i) represents the transmission power of PSSCH when PSCCH is transmitted at transmission opportunity i. Indicates the number of RBs corresponding to PSCCH transmission in PSCCH-PSSCH transmission opportunity i.

[0096] In PSCCH-PSSCH transmission opportunity i, the transmission power of PSCCH is:

[0097] The above mainly introduces the solution provided by the present disclosure from the perspective of the interaction between each node. It is understandable that each node, such as a terminal and a base station, includes a hardware structure and / or software module corresponding to the execution of each function in order to implement the above functions. Those skilled in the art should easily appreciate that, in combination with the algorithm steps of each example described in the embodiments disclosed herein, the present invention can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in a hardware or computer software driven hardware manner depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0098] The embodiments of the present disclosure can divide the terminal into functional modules according to the above-mentioned method embodiments. For example, each functional module can be divided corresponding to each function, or two or more functions can be integrated into one functional module. The above-mentioned integrated modules can be implemented in the form of hardware or software. It should be noted that the division of modules in the embodiments of the present disclosure is schematic and is only a logical functional division. In actual implementation, there may be other division methods. The following is an example of dividing each functional module corresponding to each function.

[0099] FIG3 is a schematic diagram showing the composition of a communication device provided by an embodiment of the present disclosure. As shown in FIG3 , the communication device 20 includes an acquisition unit 201 and a processing unit 202 .

[0100] The communication device 20 may be the terminal or a chip in the terminal. When the communication device 20 is used to implement the functions of the terminal in the above embodiment, each unit is used to implement the following functions.

[0101] The acquiring unit 201 is configured to acquire power control parameter information, where the power control parameter information includes a first reference signal and a power control parameter associated with the first reference signal.

[0102] The processing unit 202 is configured to determine a power control parameter corresponding to the side link transmission based on the power control parameter information and a transmit beam of the side link transmission.

[0103] The processing unit 202 is further configured to determine the transmission power of the side link transmission based on downlink path loss power control based on the power control parameter corresponding to the side link transmission.

[0104] In some embodiments, the power control parameter associated with the first reference signal includes at least one of the following: a target received power, a compensation factor for a downlink path loss, and a second reference signal for determining the downlink path loss.

[0105] In some embodiments, the processing unit 202 is configured to determine a power control parameter corresponding to the side link transmission based on a relationship between a transmit beam of the side link transmission and a beam corresponding to a first reference signal included in the power control parameter information.

[0106] In some embodiments, the processing unit 202 is used to: when there is a target first reference signal in the first reference signal included in the power control parameter information that satisfies a preset relationship with the transmit beam of the side link transmission, determine the power control parameter corresponding to the side link transmission according to the power control parameter associated with the target first reference signal; when there is no target first reference signal in the first reference signal included in the power control parameter information, determine that the power control parameter corresponding to the side link transmission is a default power control parameter.

[0107] In some embodiments, the beam corresponding to the first reference signal is the first beam, and the preset relationship includes at least one of the following: the first beam and the transmit beam overlap in space, the spatial overlap area of ​​the first beam and the transmit beam is greater than or equal to a first threshold, the ratio of the spatial overlap area of ​​the first beam and the transmit beam to the coverage area of ​​the transmit beam is greater than or equal to a second threshold, the ratio of the spatial overlap area of ​​the first beam and the transmit beam to the coverage area of ​​the first beam is greater than or equal to a third threshold, the angle between the first beam and the transmit beam is less than or equal to a fourth threshold, and the first beam and the transmit beam have the same spatial domain filtering.

[0108] In some embodiments, there are multiple target first reference signals in the first reference signal included in the power control parameter information, and the processing unit 202 is used to determine the power control parameter associated with a target first reference signal among the multiple target first reference signals as the power control parameter corresponding to the side link transmission.

[0109] In some embodiments, a target first reference signal is a target first reference signal with the highest priority among the multiple target first reference signals, and the priority is determined based on an overlapping area between a beam corresponding to the target first reference signal and the transmit beam.

[0110] In some embodiments, the power control parameter associated with the first reference signal is a power control parameter associated with the first reference signal on the time domain resource; the processing unit 202 is used to determine the power control parameter associated with the time domain resource to which the time slot or opportunity of the side link transmission belongs among the power control parameters associated with the target first reference signal as the power control parameter corresponding to the side link transmission.

[0111] In some embodiments, the default power control parameters include at least one of the following: configured power control parameters; pre-configured power control parameters; predefined power control parameters; power control parameters associated with a specific first reference signal included in the power control parameter information; and specific power control parameters included in the power control parameter information.

[0112] In some embodiments, the beam corresponding to the first reference signal refers to a beam used when transmitting or receiving the first reference signal. As an example, the beam corresponding to the first reference signal includes at least one of the following: when the first reference signal is a downlink reference signal, the beam corresponding to the first reference signal is a receive beam for the first reference signal; when the first reference signal is an uplink reference signal or a sidelink reference signal, the beam corresponding to the first reference signal is a transmit beam for the first reference signal.

[0113] In some embodiments, the first reference signal includes at least one of the following: a downlink channel state information reference signal; a downlink channel state information interference measurement signal; a downlink demodulation reference signal; an uplink demodulation reference signal; a sounding reference signal; a phase tracking reference signal; a random access channel signal; a downlink synchronization signal block; a positioning reference signal; a side link channel state information reference signal; a side link demodulation reference signal; a side link phase tracking reference signal; a side link positioning reference signal; and a side link synchronization signal block.

[0114] In some embodiments, the power control parameter information indicates the first reference signal through at least one of the following: a transmission configuration indication state of the communication link between the terminal and the network side; a transmission configuration indication state of the side link; a reference signal index.

[0115] In some embodiments, the second reference signal includes at least one of the following: a downlink channel state information reference signal; a downlink channel state information interference measurement signal; a downlink demodulation reference signal; and a downlink synchronization signal block.

[0116] If the various units in Figure 3 are implemented in the form of software function modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiment of the present disclosure is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor (processor) to execute all or part of the steps of the various embodiments of the present disclosure. The storage medium for storing computer software products includes: various media that can store program codes, such as a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0117] In the case of implementing the functions of the above-mentioned integrated modules in hardware, an embodiment of the present disclosure provides a schematic structural diagram of a communication device, which may be the above-mentioned communication device 20. As shown in Figure 4, the communication device 30 includes: a processor 302, a communication interface 303, and a bus 304. The communication device 30 may also include a memory 301.

[0118] Processor 302 may implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with the present disclosure. Processor 302 may be a central processing unit, a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field-programmable gate array, or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. It may implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with the present disclosure. Processor 302 may also be a combination that implements computing functions, such as a combination of one or more microprocessors, or a combination of a DSP and a microprocessor.

[0119] The communication interface 303 is used to connect to other devices via a communication network, such as Ethernet, wireless access network, wireless local area network (WLAN), etc.

[0120] The memory 301 may be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM) or other type of dynamic storage device that can store information and instructions, or an electrically erasable programmable read-only memory (EEPROM), a disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto.

[0121] As a possible implementation, the memory 301 may exist independently of the processor 302. The memory 301 may be connected to the processor 302 via a bus 304 and used to store instructions or program codes. When the processor 302 calls and executes the instructions or program codes stored in the memory 301, the transmission power determination method provided in the embodiment of the present disclosure can be implemented.

[0122] In another possible implementation, the memory 301 and the processor 302 may also be integrated together.

[0123] Bus 304 can be an Extended Industry Standard Architecture (EISA) bus, etc. Bus 304 can be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, FIG4 shows only one thick line, but this does not mean that there is only one bus or only one type of bus.

[0124] Through the description of the above implementation methods, technical personnel in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above models is used as an example. In actual applications, the above functions can be allocated to different models as needed, that is, the internal structure of the base station or terminal can be divided into different models to complete all or part of the functions described above.

[0125] The embodiments of the present disclosure also provide a computer-readable storage medium. All or part of the processes in the above-mentioned method embodiments can be completed by computer instructions to instruct relevant hardware, and the program can be stored in the above-mentioned computer-readable storage medium. When the program is executed, it can include the processes of the above-mentioned method embodiments. The computer-readable storage medium can be the memory of any of the above-mentioned embodiments. The above-mentioned computer-readable storage medium can also be an external storage device of the above-mentioned base station or terminal, such as a plug-in hard disk, a smart memory card (smart media card, SMC), a secure digital (secure digital, SD) card, a flash card (flash card), etc. equipped on the above-mentioned base station or terminal. Furthermore, the above-mentioned computer-readable storage medium can also include both the internal storage unit of the above-mentioned base station or terminal and an external storage device. The above-mentioned computer-readable storage medium is used to store the above-mentioned computer program and other programs and data required by the above-mentioned base station or terminal. The above-mentioned computer-readable storage medium can also be used to temporarily store data that has been output or is to be output.

[0126] An embodiment of the present disclosure further provides a computer program product, which includes a computer program. When the computer program product is run on a computer, the computer is enabled to execute any one of the transmission power determination methods provided in the above embodiments.

[0127] Although the present disclosure is described herein in conjunction with various embodiments, in the process of implementing the disclosure for which protection is sought, those skilled in the art may understand and implement other variations of the disclosed embodiments by reviewing the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other components or steps, and "one" or "an" does not exclude multiple components. A single processor or other unit may implement several functions listed in the claims. Certain measures are recorded in different dependent claims, but this does not mean that these measures cannot be combined to produce good results.

[0128] Although the present disclosure has been described with reference to certain features and embodiments thereof, it will be apparent that various modifications and combinations may be made thereto without departing from the spirit and scope of the present disclosure. Accordingly, this specification and the drawings are merely illustrative of the present disclosure as defined by the appended claims and are deemed to cover any and all modifications, variations, combinations or equivalents within the scope of the present disclosure. Obviously, those skilled in the art may make various modifications and variations to the present disclosure without departing from the spirit and scope of the present disclosure. Thus, the present disclosure is intended to encompass such modifications and variations as would fall within the scope of the claims of the present disclosure and their equivalents.

[0129] The above are merely embodiments of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or replacements within the technical scope disclosed in the present disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A method for determining transmission power, the method comprising: Acquire power control parameter information, where the power control parameter information includes a first reference signal and a power control parameter associated with the first reference signal; Determining a power control parameter corresponding to the side link transmission based on the power control parameter information and a transmit beam of the side link transmission; Based on the power control parameter corresponding to the side link transmission, a transmission power of the side link transmission based on downlink path loss power control is determined.

2. The method according to claim 1, wherein: The power control parameter associated with the first reference signal includes at least one of the following: A target received power, a compensation factor for a downlink path loss, and a second reference signal for determining the downlink path loss.

3. The method according to claim 1, wherein: The determining, based on the power control parameter information and a transmit beam of the side link transmission, a power control parameter corresponding to the side link transmission includes: The power control parameter corresponding to the side link transmission is determined according to the relationship between the transmit beam of the side link transmission and the beam corresponding to the first reference signal included in the power control parameter information.

4. The method according to claim 3, wherein: The determining, according to a relationship between a transmit beam of the side link transmission and a beam corresponding to a first reference signal included in the power control parameter information, a power control parameter corresponding to the side link transmission comprises: In a case where there is a target first reference signal that satisfies a preset relationship with a transmit beam of the side link transmission in the first reference signal included in the power control parameter information, determining a power control parameter corresponding to the side link transmission according to a power control parameter associated with the target first reference signal; In a case where the target first reference signal does not exist in the first reference signal included in the power control parameter information, it is determined that the power control parameter corresponding to the side link transmission is a default power control parameter.

5. The method according to claim 4, wherein: The beam corresponding to the first reference signal is a first beam, and the preset relationship includes at least one of the following: The first beam overlaps with the transmit beam in space, the overlapping area between the first beam and the transmit beam in space is greater than or equal to a first threshold, the ratio between the overlapping area between the first beam and the transmit beam in space and the coverage area of ​​the transmit beam is greater than or equal to a second threshold, the ratio between the overlapping area between the first beam and the transmit beam in space and the coverage area of ​​the first beam is greater than or equal to a third threshold, the angle between the first beam and the transmit beam is less than or equal to a fourth threshold, and the first beam and the transmit beam have the same spatial domain filtering.

6. The method according to claim 4, wherein: In a case where there are multiple target first reference signals in the first reference signal included in the power control parameter information, determining the power control parameter corresponding to the edge link transmission according to the power control parameter associated with the target first reference signal includes: A power control parameter associated with a target first reference signal among the multiple target first reference signals is determined as a power control parameter corresponding to the side link transmission.

7. The method according to claim 6, wherein: The one target first reference signal is a target first reference signal with the highest priority among the multiple target first reference signals, and the priority is determined based on an overlapping area between a beam corresponding to the target first reference signal and the transmit beam.

8. The method according to claim 4, wherein: The power control parameter associated with the first reference signal is a power control parameter associated with the first reference signal on time domain resources; The determining, according to the power control parameter associated with the target first reference signal, a power control parameter corresponding to the side link transmission includes: Among the power control parameters associated with the target first reference signal, a power control parameter associated with a time domain resource to which a time slot or opportunity of the side link transmission belongs is determined as a power control parameter corresponding to the side link transmission.

9. The method according to claim 4, wherein: The default power control parameter includes at least one of the following: Configured power control parameters; Preconfigured power control parameters; Predefined power control parameters; A power control parameter associated with a specific first reference signal included in the power control parameter information; The power control parameter information includes specific power control parameters.

10. The method according to claim 1, wherein: The beam corresponding to the first reference signal includes at least one of the following: In the case where the first reference signal is a downlink reference signal, the beam corresponding to the first reference signal is a receiving beam of the first reference signal; In the case where the first reference signal is an uplink reference signal or a sidelink reference signal, the beam corresponding to the first reference signal is a transmit beam of the first reference signal.

11. The method according to claim 1, wherein: The first reference signal includes at least one of the following: Downlink channel state information reference signal; Downlink channel state information interference measurement signal; Downlink demodulation reference signal; Uplink demodulation reference signal; detecting a reference signal; Phase tracking reference signal; Random access channel signal; Downlink synchronization signal block; Positioning reference signal; Side link channel state information reference signal; side link demodulation reference signal; Side link phase tracking reference signal; Sidelink positioning reference signal; Side link synchronization signal block.

12. The method according to claim 1, wherein: The power control parameter information indicates the first reference signal by at least one of the following: The transmission configuration indication status of the communication link between the terminal and the network side; a transmission configuration indication state of the edge link; Reference signal index.

13. The method according to claim 2, wherein: The second reference signal includes at least one of the following: Downlink channel state information reference signal; Downlink channel state information interference measurement signal; Downlink demodulation reference signal; Downlink synchronization signal block.

14. A communication device, comprising a memory, a processor, and computer program instructions stored in the memory and executable on the processor, wherein the processor implements the method according to any one of claims 1 to 13 when executing the computer program instructions.

15. A computer-readable storage medium comprising computer program instructions; wherein: When the computer program instructions are executed on a computer, the computer is caused to perform the method according to any one of claims 1 to 13.

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