Channel transmission parameter determination method, apparatus, and related device

Abstract

The application discloses a channel sending parameter determination method and device and related equipment, and belongs to the technical field of communication. The method comprises the following steps: a terminal determines sending parameters of sidelink (SL) discovery based on upper layer indication information and target information, wherein the target information is configured or preconfigured by a network side device; and the terminal determines sending parameters of a physical sidelink shared channel (PSSCH) of the SL discovery and / or sending parameters of a physical sidelink control channel (PSCCH) of the SL discovery according to the sending parameters of the SL discovery.

Description

Technical Field

[0001] This application belongs to the field of communication technology, specifically relating to a method, apparatus and related equipment for determining channel transmission parameters. Background Technology

[0002] Relay technology in wireless communication systems involves adding one or more relay nodes between the base station and the terminal. These nodes are responsible for forwarding the wireless signal one or more times, meaning the signal needs to go through multiple hops to reach the terminal. Wireless relay technology can not only extend cell coverage and fill coverage gaps, but also increase cell capacity through spatial resource reuse. For indoor coverage, relay technology can also overcome penetration loss and improve indoor coverage quality.

[0003] Currently, there is no solution for how to support the distance requirements of SideLink (SL) discovery. The sending parameters of SL discovery may not match the terminal's configuration information, resulting in low communication performance. Summary of the Invention

[0004] This application provides a method, apparatus, and related equipment for determining channel transmission parameters, which can solve the problem that the transmission parameters discovered by SL may not match the terminal's configuration information, resulting in low communication performance.

[0005] Firstly, a method for determining channel transmission parameters is provided, including:

[0006] The terminal determines the transmission parameters for the secondary link SL discovery based on the upper-layer indication information and the target information, wherein the target information is configured or pre-configured by the network-side device;

[0007] The terminal determines the transmission parameters of the Physical Secondary Link Shared Channel (PSSCH) and / or the transmission parameters of the Physical Secondary Link Control Channel (PSCCH) discovered by the SL based on the transmission parameters discovered by the SL.

[0008] Secondly, a method for determining channel transmission parameters is provided, including:

[0009] The network-side device sends target information to the terminal. The target information is used by the terminal to determine the transmission parameters of the Physical Secondary Link Shared Channel (PSSCH) discovered by the secondary link SL, and / or the transmission parameters of the Physical Secondary Link Control Channel (PSCCH) discovered by the SL.

[0010] Thirdly, a channel transmission parameter determination apparatus is provided, comprising:

[0011] The first determining module is used to determine the transmission parameters of the secondary link SL discovery based on the upper-layer indication information and the target information, wherein the target information is configured or pre-configured by the network-side device;

[0012] The second determining module is used to determine the transmission parameters of the Physical Secondary Link Shared Channel (PSSCH) and / or the transmission parameters of the Physical Secondary Link Control Channel (PSCCH) discovered by the SL based on the transmission parameters discovered by the SL.

[0013] Fourthly, a channel transmission parameter determination apparatus is provided, comprising:

[0014] The sending module is used to send target information to the terminal. The target information is used by the terminal to determine the sending parameters of the Physical Secondary Link Shared Channel (PSSCH) discovered by the secondary link SL, and / or the sending parameters of the Physical Secondary Link Control Channel (PSCCH) discovered by the SL.

[0015] Fifthly, a terminal is provided, including a processor, a memory, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the steps of the channel transmission parameter determination method as described in the first aspect.

[0016] In a sixth aspect, a network-side device is provided, including a processor, a memory, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the steps of the channel transmission parameter determination method as described in the second aspect.

[0017] In a seventh aspect, a readable storage medium is provided, on which a program or instructions are stored, which, when executed by a processor, implement the steps of the channel transmission parameter determination method as described in the first or second aspect.

[0018] Eighthly, a chip is provided, the chip including a processor and a communication interface, the communication interface being coupled to the processor, the processor being used to run network-side device programs or instructions to implement the channel transmission parameter determination method as described in the first or second aspect.

[0019] In this embodiment, the terminal determines the transmission parameters of the SL discovery based on upper-layer indication information and target information, thereby determining the transmission parameters of the PSSCH and / or PSCCH discovered by the SL. This allows the transmission parameters of the PSSCH and / or PSCCH discovered by the SL to match the terminal's configuration information (including upper-layer indication information and target information), thereby improving the communication performance of the channel. Attached Figure Description

[0020] Figure 1 This is a structural diagram of a network system provided in an embodiment of this application;

[0021] Figure 2 This is a flowchart of a channel transmission parameter determination method provided in an embodiment of this application;

[0022] Figure 3 This is another flowchart of the channel transmission parameter determination method provided in the embodiments of this application;

[0023] Figure 4 This is a structural diagram of the channel transmission parameter determination device provided in an embodiment of this application;

[0024] Figure 5 This is another structural diagram of the channel transmission parameter determination device provided in the embodiments of this application;

[0025] Figure 6 This is a structural diagram of the communication device provided in the embodiments of this application;

[0026] Figure 7 This is a structural diagram of the terminal provided in the embodiments of this application;

[0027] Figure 8 This is a structural diagram of the network-side device provided in the embodiments of this application. Detailed Implementation

[0028] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0029] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same class, not limited in number; for example, a first object can be one or more. Furthermore, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship. In this application, "transmission" refers to the transmission of a signal, not signal sending in the narrow sense.

[0030] It is worth noting that the technologies described in 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 this application are often used interchangeably, and the described technologies can be used with the systems and radio technologies mentioned above, as well as with other systems and radio technologies. However, the following description describes New Radio (NR) systems for illustrative purposes, and the term NR is used in most of the following description, although these technologies can also be applied to applications other than NR systems, such as 6th generation (6G) radio systems. th Generation 6G communication system.

[0031] Figure 1This diagram illustrates a structural diagram of a wireless communication system applicable to embodiments of this application. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 can also be referred to as a terminal device or user equipment (UE). The terminal 11 can be a mobile phone, tablet computer, laptop computer, personal digital assistant (PDA), handheld computer, netbook, ultra-mobile personal computer (UMPC), mobile internet device (MID), wearable device, vehicle-mounted device (VUE), pedestrian terminal (PUE), etc. Wearable devices include wristbands, headphones, glasses, etc. It should be noted that this application does not limit the specific type of terminal 11. Network-side device 12 can be a base station or a core network. The base station can be referred to as a node B, evolved node B, access point, base transceiver station (BTS), radio base station, radio transceiver, basic service set (BSS), extended service set (ESS), B node, evolved B node (eNB), home B node, home evolved B node, WLAN access point, WiFi node, transmitting and receiving point (TRP), or any other suitable term in the field, as long as the same technical effect is achieved. The base station is not limited to specific technical terms. It should be noted that in this embodiment of the application, only the base station in the NR system is used as an example, but the specific type of base station is not limited.

[0032] The method for determining channel transmission parameters provided in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0033] Please see Figure 2 , Figure 2 This is a flowchart of a channel transmission parameter determination method provided in an embodiment of this application. The channel transmission parameter determination method includes:

[0034] Step 201: Based on the upper-layer indication information and target information, the terminal determines the transmission parameters for the discovery of the side link (SL). The target information is configured or pre-configured by the network-side device.

[0035] Transmission parameters may include at least one of the following: transmission power, number of transmissions, modulation and coding scheme (MCS) index, channel occupancy ratio (CR), etc. Target information can be determined based on pre-configuration or configured based on network-side equipment.

[0036] Step 202: Based on the transmission parameters discovered by the SL, determine the transmission parameters of the Physical Sidelink Share Channel (PSSCH) and / or the transmission parameters of the Physical Sidelink Control Channel (PSCCH) discovered by the SL.

[0037] The channel transmission parameter determination method described above involves the terminal determining the transmission parameters discovered by the SL based on upper-layer indication information and target information, thereby determining the transmission parameters of the PSSCH and / or PSCCH discovered by the SL. This ensures that the transmission parameters of the PSSCH and / or PSCCH discovered by the SL match the terminal's configuration information (including upper-layer indication information and target information), thereby improving the communication performance of the channel.

[0038] In the above, the upper-layer indication information includes the SL detection distance level; wherein, the SL detection distance level satisfies one of the following:

[0039] There is a correspondence between the SL discovery distance level and the minimum transmission distance authorized by the upper layer;

[0040] There is a correspondence between the SL discovery distance level and the maximum transmission distance authorized by the upper layer;

[0041] There is a correspondence between the SL discovery distance level and the transmission distance range authorized by the upper layer.

[0042] For example, SL discovery distance levels can be divided into "low", "medium", and "long", where "low" corresponds to a maximum transmission power of 1, "medium" corresponds to a maximum transmission power of 2, and "long" corresponds to a maximum transmission power of 3. As another example, SL discovery distance levels can be divided into 1, 2, 3… where SL discovery distance level 1 corresponds to a maximum transmission power of 1, SL discovery distance level 2 corresponds to a maximum transmission power of 2, SL discovery distance level 3 corresponds to a maximum transmission power of 3, and so on. The SL discovery distance level is related to the actual application and / or service. The upper layer can define the SL discovery distance level according to the discovery distance requirements of the specific application and / or service, such as a minimum transmission distance requirement (e.g., 50m), a maximum transmission distance requirement (e.g., 100m), or a transmission distance range requirement (e.g., 50m-100m), etc., without limitation.

[0043] The upper layer determines the SL discovery distance level based on the minimum transmission distance, maximum transmission distance, or transmission distance range requirements. The terminal determines the transmission parameters for SL discovery based on the SL discovery distance level and target information.

[0044] The target information includes at least one of the following:

[0045] SL discovers the first transmission parameter configuration shared with SL communication;

[0046] The second send parameter configuration is specifically for SL discovery.

[0047] SL discovery can share the transmission parameter configuration of SL communication, or it can not share the transmission parameter configuration of SL communication, meaning SL discovery has its own transmission parameter configuration. When SL discovery shares the transmission parameter configuration of SL communication, SL discovery and SL communication share the first transmission parameter configuration; when SL discovery does not share the transmission parameter configuration of SL communication, a second transmission parameter configuration dedicated to SL discovery is configured.

[0048] In one embodiment of this application, when the target information includes a first transmission parameter configuration shared by SL discovery and SL communication, the first transmission parameter configuration includes a correspondence between CBR, priority, and the first transmission parameter. The first transmission parameter includes at least one of the following:

[0049] The first maximum number of transmissions for PSSCH;

[0050] The first largest MCS index in PSSCH;

[0051] The first minimal MCS index of PSSCH;

[0052] The first maximum number of subchannels in PSSCH;

[0053] The first minimum number of sub-channels in PSSCH;

[0054] The first maximum transmit power of PSSCH;

[0055] The first maximum transmit power of PSCCH;

[0056] The first upper limit of CR.

[0057] When SL discovery and SL communication share the same first transmission parameter configuration, the priority of SL discovery is fixed and can be the highest priority (i.e., priority=1).

[0058] Accordingly, when the first transmission parameter configuration includes the correspondence between CBR, priority, and the first transmission parameter, the terminal determines the transmission parameters discovered by the secondary link SL based on the upper-layer indication information and target information, including:

[0059] When the measured CBR or default CBR is the same as the CBR in the first transmission parameter configuration, and the preset priority of the PSSCH is the same as the priority in the first transmission parameter configuration, the terminal obtains the first maximum transmission power of the PSSCH corresponding to the first transmission parameter configuration, and / or the first maximum transmission power of the PSCCH corresponding to the first transmission parameter configuration.

[0060] Accordingly, determining the transmission parameters of the Physical Secondary Link Shared Channel (PSSCH) and / or the transmission parameters of the Physical Secondary Link Control Channel (PSCCH) discovered by the SL based on the transmission parameters discovered by the SL includes:

[0061] Based on the first maximum transmit power of the PSSCH corresponding to the first transmit parameter configuration, determine the target transmit power of the PSSCH discovered by the SL; and / or,

[0062] The target transmission power of the PSCCH discovered by the SL is determined based on the first maximum transmission power of the PSCCH corresponding to the first transmission parameter configuration.

[0063] In the above, the terminal matches the measured CBR or default CBR with the CBR in the first transmission parameter configuration, and matches the preset priority of the PSSCH with the priority in the first transmission parameter configuration. If the first transmission parameter configuration has a first target CBR that matches the measured CBR or default CBR, and the priority corresponding to the first target CBR matches the preset priority of the PSSCH, then the first transmission parameter corresponding to the first target CBR is obtained. The first maximum transmission power of the PSSCH corresponding to the first transmission parameter configuration is the first maximum transmission power of the PSSCH in the first transmission parameter corresponding to the first target CBR, and the first maximum transmission power of the PSCCH corresponding to the first transmission parameter configuration is the first maximum transmission power of the PSCCH in the first transmission parameter corresponding to the first target CBR.

[0064] In the above, the preset priority can be a pre-set priority, which can be a fixed priority. The preset priority can be set to the highest priority.

[0065] Accordingly, when the target transmission power of the PSSCH discovered by the SL is determined based on the first maximum transmission power of the PSSCH corresponding to the first transmission parameter configuration, the target transmission power of the PSSCH discovered by the SL is determined according to the first parameter, the second parameter and the third parameter.

[0066] The first parameter includes any one of the following:

[0067] P CMAX ;

[0068] The third maximum transmission power in the first target parameter;

[0069] P CMAX The smaller of the first target parameter and the third maximum transmission power;

[0070] Among them, P CMAX The first target parameter represents the maximum transmit power value of the serving cell and is determined based on the upper-layer authorized SL discovery distance level and the second transmit parameter configuration of the terminal.

[0071] The second parameter includes: the first maximum transmission power of the PSSCH corresponding to the first transmission parameter configuration;

[0072] The third parameter includes any one of the following:

[0073] P PSSCH,D and P PSSCH,SL The smaller of the two;

[0074] P PSSCH,D and PPSSCH,SL The smaller of the two values ​​is added to the power offset in the first target parameter to obtain the value;

[0075] P PSSCH,D and P PSSCH,SL The smaller of the two values ​​is multiplied by the power factor in the first target parameter to obtain the value;

[0076] Among them, P PSSCH,D P is the first transmit power obtained with reference to downlink path loss. PSSCH,SL The second transmission power is obtained with reference to the secondary link path loss.

[0077] The target transmit power of the PSSCH discovered by the SL is the minimum value among the first parameter, the second parameter, and the third parameter.

[0078] In the above, the third maximum transmission power in the first target parameter can be determined as follows:

[0079] If the second transmission parameter configuration includes a correspondence between the SL discovery distance level and the second transmission parameters, and if the SL discovery distance level included in the upper-layer indication information is the same as the target SL discovery distance level in the second transmission parameter configuration, then the second transmission parameter corresponding to the target SL discovery distance level in the second transmission parameter configuration is obtained. The first target parameter is a parameter of PSSCH in the second transmission parameter corresponding to the target SL discovery distance level. For example, the first target parameter includes at least one of the third maximum transmission power of PSSCH, the power offset of PSSCH, and the power factor of PSSCH.

[0080] In one embodiment of this application, when the target information includes a second transmission parameter configuration dedicated to SL discovery, the second transmission parameter configuration includes a correspondence between at least one of CBR and SL discovery distance level and the second transmission parameter. That is, the second transmission parameter configuration includes a correspondence between CBR and the second transmission parameter, a correspondence between SL discovery distance level and the second transmission parameter, or a correspondence between CBR, SL discovery distance level and the second transmission parameter. The above correspondence can be divided into the following two cases:

[0081] In one scenario, where the second transmission parameter configuration includes a correspondence between CBR and the second transmission parameter, or where the second transmission parameter configuration includes a correspondence between CRB, SL discovery distance level, and the second transmission parameter, the second transmission parameter includes at least one of the following:

[0082] The second maximum number of transmissions for PSSCH;

[0083] The second largest MCS index in PSSCH;

[0084] The second smallest MCS index of PSSCH;

[0085] The second largest number of sub-channels in PSSCH;

[0086] The second minimum number of sub-channels in PSSCH;

[0087] The second maximum transmit power of PSSCH;

[0088] The second maximum transmit power of PSCCH.

[0089] The second upper limit of CR.

[0090] For example, setting the correspondence between SL discovery distance level, CBR value (0-100%), and maximum transmit power:

[0091] SL detects distance level 1 and CBR value range [0, 50%], corresponding to maximum transmit power 1;

[0092] SL detects distance level 1 and CBR range [50, 100%], corresponding to maximum transmit power 2;

[0093] For example, setting the correspondence between SL discovery distance level, CBR value (0-100%), priority, and maximum transmit power:

[0094] SL detects distance level 1, CBR value range [0, 50%] and priority 1, corresponding to maximum transmission power 1;

[0095] SL detects distance level 1, CBR value range [0, 50%] and priority [2, 3.., 8], corresponding to maximum transmission power 2.

[0096] Accordingly, when the second transmission parameter configuration includes the above correspondence, the terminal determines the transmission parameters discovered by the secondary link SL based on the upper-layer indication information and target information, including:

[0097] When the measured CBR or default CBR is the same as the CBR in the second transmission parameter configuration, and the upper-layer authorized SL discovery distance level of the terminal is the same as the SL discovery distance level in the second transmission parameter configuration, the terminal obtains the second maximum transmission power of the PSSCH corresponding to the second transmission parameter configuration, and / or the second maximum transmission power of the PSCCH corresponding to the second transmission parameter configuration.

[0098] Accordingly, determining the transmission parameters of the Physical Secondary Link Shared Channel (PSSCH) and / or the transmission parameters of the Physical Secondary Link Control Channel (PSCCH) discovered by the SL based on the transmission parameters discovered by the SL includes:

[0099] Based on the second maximum transmit power of the PSSCH corresponding to the second transmit parameter configuration, determine the target transmit power of the PSSCH discovered by the SL; and / or,

[0100] The target transmission power of the PSCCH discovered by the SL is determined based on the second maximum transmission power of the PSCCH corresponding to the second transmission parameter configuration.

[0101] Specifically, the terminal matches the measured CBR or default CBR with the CBR in the second transmission parameter configuration, and matches the upper-layer authorized SL discovery distance level (which can be determined according to upper-layer indication information, such as the SL discovery distance level included in the upper-layer indication information) with the SL discovery distance level in the second transmission parameter configuration. If the second transmission parameter configuration has a second target CBR that matches the measured CBR or default CBR, and the SL discovery distance level corresponding to the second target CBR matches the upper-layer authorized SL discovery distance level of the terminal, then the second transmission parameter corresponding to the second target CBR is obtained. The second maximum transmission power of the PSSCH corresponding to the second transmission parameter configuration is the second maximum transmission power of the PSSCH in the second transmission parameter corresponding to the second target CBR, and the second maximum transmission power of the PSCCH corresponding to the second transmission parameter configuration is the second maximum transmission power of the PSCCH in the first transmission parameter corresponding to the second target CBR.

[0102] Accordingly, when the target transmission power of the PSSCH discovered by the SL is determined according to the second maximum transmission power of the PSSCH corresponding to the second transmission parameter configuration, the target transmission power of the PSSCH discovered by the SL is determined according to the first parameter, the second parameter and the third parameter.

[0103] The first parameter includes any one of the following:

[0104] P CMAX ;

[0105] The third maximum transmission power in the first target parameter;

[0106] P CMAX The smaller of the first target parameter and the third maximum transmission power;

[0107] Among them, P CMAXThe first target parameter represents the maximum transmit power value of the serving cell and is determined based on the upper-layer authorized SL discovery distance level and the second transmit parameter configuration of the terminal.

[0108] The second parameter includes: the second maximum transmission power of the PSSCH corresponding to the second transmission parameter configuration;

[0109] The third parameter includes any of the following: P PSSCH,D , and P PSSCH,SL The smaller of the two;

[0110] P PSSCH,D, and P PSSCH,SL The smaller of the two values ​​is added to the power offset in the first target parameter to obtain the value;

[0111] P PSSCH,D, and P PSSCH,SL The smaller of the two values ​​is multiplied by the power factor in the first target parameter to obtain the value;

[0112] Among them, P PSSCH,D P is the first transmit power obtained with reference to downlink path loss. PSSCH,SL The second transmission power is obtained with reference to the secondary link path loss.

[0113] The target transmit power of the PSSCH discovered by the SL is the minimum value among the first parameter, the second parameter, and the third parameter.

[0114] In the above, the third maximum transmission power in the first target parameter can be determined as follows:

[0115] If the second transmission parameter configuration includes a correspondence between the SL discovery distance level and the second transmission parameters, and if the SL discovery distance level included in the upper-layer indication information is the same as the target SL discovery distance level in the second transmission parameter configuration, then the second transmission parameter corresponding to the target SL discovery distance level in the second transmission parameter configuration is obtained. The first target parameter is a parameter of PSSCH in the second transmission parameter corresponding to the target SL discovery distance level. For example, the first target parameter includes at least one of the third maximum transmission power of PSSCH, the power offset of PSSCH, and the power factor of PSSCH.

[0116] In another scenario, where the second transmission parameter configuration includes a correspondence between the SL discovery distance level and the second transmission parameter, the second transmission parameter includes at least one of the following:

[0117] The third maximum transmit power of PSSCH;

[0118] The third maximum transmit power of PSCCH;

[0119] Power offset of PSSCH;

[0120] Power offset of PSCCH;

[0121] PSSCH power factor;

[0122] Power factor of PSCCH.

[0123] When the second transmission parameter configuration includes the correspondence between the SL discovery distance level and the second transmission parameters, the terminal determines the transmission parameters for secondary link SL discovery based on upper-layer indication information and target information, including:

[0124] When the SL discovery distance level authorized by the upper layer of the terminal is the same as the SL discovery distance level in the second transmission parameter configuration, the first target parameter of the PSSCH corresponding to the second transmission parameter configuration and / or the second target parameter of the PSCCH corresponding to the second transmission parameter configuration are obtained. The first target parameter includes at least one of the third maximum transmission power of the PSSCH, the power offset of the PSSCH and the power factor of the PSSCH. The second target parameter includes at least one of the third maximum transmission power of the PSCCH, the power offset of the PSCCH and the power factor of the PSCCH.

[0125] Accordingly, determining the transmission parameters of the Physical Secondary Link Shared Channel (PSSCH) and / or the transmission parameters of the Physical Secondary Link Control Channel (PSCCH) discovered by the SL based on the transmission parameters discovered by the SL includes:

[0126] Based on the first target parameter of the PSSCH corresponding to the second transmission parameter configuration, determine the target transmission power of the PSSCH discovered by the SL; and / or,

[0127] The target transmission power of the PSCCH discovered by the SL is determined based on the second target parameter of the PSCCH corresponding to the second transmission parameter configuration.

[0128] Specifically, the upper-layer authorized SL discovery distance level of the terminal can be understood as the SL discovery distance level included in the upper-layer indication information. When the SL discovery distance level included in the upper-layer indication information is the same as the target SL discovery distance level in the second transmission parameter configuration, the second transmission parameter corresponding to the target SL discovery distance level in the second transmission parameter configuration is obtained.

[0129] The first target parameter of PSSCH corresponding to the second transmission parameter configuration can be understood as the transmission parameter of PSSCH in the second transmission parameter corresponding to the target SL discovery distance level in the second transmission parameter configuration. That is, the first target parameter includes at least one of the third maximum transmission power of PSSCH, the power offset of PSSCH and the power factor of PSSCH.

[0130] The second target parameter of the PSCCH corresponding to the second transmission parameter configuration can be understood as the transmission parameter of the PSCCH in the second transmission parameter corresponding to the target SL discovery distance level in the second transmission parameter configuration. That is, the second target parameter includes at least one of the third maximum transmission power of PSCCH, the power offset of PSCCH and the power factor of PSCCH.

[0131] When the second transmission parameter configuration includes the correspondence between the SL discovery distance level and the second transmission parameter, the target transmission power of the PSCCH discovered by the SL is determined according to the sixth parameter, or the target transmission power of the PSCCH discovered by the SL is determined according to at least one of the fourth and fifth parameters, and the sixth parameter;

[0132] The fourth parameter includes the third maximum transmission power in the second target parameter;

[0133] The fifth parameter includes: the first maximum transmission power of the PSCCH obtained from the first transmission parameter configuration, or the second maximum transmission power of the PSCCH obtained from the second transmission parameter configuration;

[0134] The sixth parameter includes any one of the following:

[0135] The known transmit power of the PSCCH discovered by the SL is obtained;

[0136] The value obtained by adding the known transmission power to the power offset in the second target parameter;

[0137] The value obtained by multiplying the known transmission power by the power factor in the second target parameter.

[0138] The known transmit power can be obtained based on existing methods for acquiring the PSCCH transmit power discovered by the SL. For example, the PSCCH transmit power discovered by the SL can be obtained based on the following existing formula for calculating PSCCH transmit power:

[0139]

[0140] In the above formula, i represents the i-th transmission opportunity of PSCCH and PSSCH.

[0141] The meanings of the parameters in the above calculation formulas can be found in relevant literature, and will not be elaborated here.

[0142] The first maximum transmission power of the PSCCH can be obtained from the first transmission parameter configuration in the following way: when the measured CBR or default CBR is the same as the CBR in the first transmission parameter configuration, and the preset priority of the PSCCH is the same as the priority in the first transmission parameter configuration, the terminal obtains the first maximum transmission power of the corresponding PSCCH in the first transmission parameter configuration. The first maximum transmission power of the corresponding PSCCH is the first maximum transmission power of the PSCCH obtained from the first transmission parameter configuration.

[0143] The second maximum transmission power of the PSCCH can be obtained from the second transmission parameter configuration as follows: If the second transmission parameter configuration includes the correspondence between CRB, SL discovery distance level and the second transmission parameters, and if the CBR or default CBR obtained by the terminal in the measurement is the same as the CBR in the second transmission parameter configuration, and the SL discovery distance level authorized by the upper layer of the terminal (i.e., the SL discovery distance level in the upper layer indication information) is the same as the SL discovery distance level in the second transmission parameter configuration, then the second maximum transmission power of the corresponding PSCCH in the second transmission parameter configuration is obtained. The second maximum transmission power of the corresponding PSCCH is the second maximum transmission power of the PSCCH obtained from the second transmission parameter configuration.

[0144] In the above, the target transmit power of the PSCCH discovered by the SL is any one of the following:

[0145] The value of the sixth parameter;

[0146] The smaller of the fourth parameter and the sixth parameter;

[0147] The smaller of the fifth parameter and the sixth parameter;

[0148] The minimum value among the fourth parameter, the fifth parameter, and the sixth parameter.

[0149] Optionally, the above-described channel transmission parameter determination method further includes: sending at least one of the following messages based on the transmission parameters of the PSSCH discovered by the SL and / or the transmission parameters of the PSCCH discovered by the SL:

[0150] SL discovered the relevant message;

[0151] PC5-S related news;

[0152] News related to the PC5-RRC process.

[0153] Specifically, SL discovery-related messages include Discovery Anouncement messages, Discovery Solicitation messages, and Discovery Response messages.

[0154] PC5-S related messages can be understood as the upper-layer PC5-S related messages sent after SL discovery. For example, they include at least one of the following messages related to the PC5-S link establishment process: Direct Link Establishment Request, Direct Link Security Mode Command, Direct Link Security Mode Complete, and Direct Link Security Mode Complete. SL discovery also includes messages related to the PC5 Radio Resource Control (RRC) process. For example, they include at least one of the following messages related to the PC5-RRC connection establishment process: UECapabilityEnquirySidelink, UECapabilityInformationSidelink, RRCReconfigurationSidelink, and RRCReconfigurationCompleteSidelink. Once the PC5-RRC connection is established, the transmission parameters discovered by the SL will no longer be applied to the upper-layer PC5-S process and / or PC5-RRC process.

[0155] For example, the target transmission power of the PSSCH discovered by the SL can be determined based on the existing calculation expression for the transmission power of the PSSCH discovered by the SL.

[0156] P PSSCH (i)=min(P CMAX P MAX，CBR ,min(P PSSCH，D (i), P PSSCH，sL (i)));

[0157] In the above formula, i represents the i-th transmission opportunity of PSCCH and PSSCH.

[0158] If the first maximum transmit power of the PSSCH corresponding to the first transmit parameter configuration, or the second maximum transmit power of the PSSCH corresponding to the second transmit parameter configuration, is obtained, the corresponding P is calculated according to the above expression. PSSCH .

[0159] In one determination method, if SL discovery does not share the resource pool with SL communication, that is, SL discovery has a second transmission parameter configuration dedicated to SL discovery, the second maximum transmission power of the PSSCH corresponding to the second transmission parameter configuration is obtained (the method of obtaining it can be seen from the previous description), and P in the above expression is included. MAX，CBR Replace it with the second maximum transmit power of PSSCH corresponding to the second transmit parameter configuration, and then calculate the corresponding P according to the expression. PSSCH and the P PSSCH The smaller of the first target parameter and the third maximum transmit power is taken as the target transmit power of the PSSCH discovered by SL.

[0160] In one determination method, P in the above expression is included. CMAX Replace it with the third maximum transmission power in the first target parameter, and then calculate the corresponding P according to the expression. PSSCH and the P PSSCH The target transmit power of PSSCH is determined by SL.

[0161] In one determination method, P is calculated based on the above expression. PSSCH , will P PSSCH The value obtained by multiplying the power factor in the first target parameter is used as the target transmit power of the PSSCH discovered by SL, or P... PSSCH The value obtained by adding the power offset in the first target parameter is used as the target transmit power of the PSSCH discovered by SL.

[0162] In one determination method, P in the above expression is... PSSCH,D or P PSSCH,SL or min(P) PSSCH,D, P PSSCH,SL Multiply the power factor in the first target parameter by the value obtained according to the expression, and then use the value as the target transmit power of the PSSCH discovered by SL, or multiply the P in the above expression by the power factor in the first target parameter. PSSCH,D or P PSSCH,SL or min(P) PSSCH,D ,P PSSCH,SL The power offset in the first target parameter is added to the power offset, and the value obtained according to the expression is then used as the target transmit power of the PSSCH discovered by SL.

[0163] The channel transmission parameter determination method in this application can be used in cross-RAT scenarios, i.e., scenarios where LTE base stations control NR SL.

[0164] Please see Figure 3 , Figure 3 This is a flowchart of a channel transmission parameter determination method provided in an embodiment of this application, such as... Figure 3 As shown in the embodiments of this application, the method for determining channel transmission parameters includes:

[0165] Step 301: The network-side device sends target information to the terminal. The target information is used by the terminal to determine the transmission parameters of the Physical Secondary Link Shared Channel (PSSCH) discovered by the secondary link SL, and / or the transmission parameters of the Physical Secondary Link Control Channel (PSCCH) discovered by the SL.

[0166] In this embodiment, the target information is configured by the network-side device. The terminal can determine the transmission parameters discovered by the sidelink (SL) based on the upper-layer indication information and the target information. The transmission parameters may include at least one of the following: transmission power, number of transmissions, modulation and coding scheme (MCS) index, channel occupancy ratio (CR), etc.

[0167] In this embodiment, the network-side device sends target information to the terminal. This target information is used by the terminal to determine the transmission parameters of the Physical Secondary Link Shared Channel (PSSCH) discovered by the secondary link SL, and / or the transmission parameters of the Physical Secondary Link Control Channel (PSCCH) discovered by the SL. This allows the terminal to determine the transmission parameters discovered by the SL based on upper-layer indication information and target information, thereby determining the transmission parameters of the PSSCH and / or PSCCH discovered by the SL. This ensures that the transmission parameters of the PSSCH and / or PSCCH discovered by the SL match the terminal's configuration information (including pre-configuration information or configuration information configured by the network-side device for the terminal), thereby improving the channel's communication performance.

[0168] Optionally, the target information includes at least one of the following:

[0169] SL discovers the first transmission parameter configuration shared with SL communication;

[0170] The second send parameter configuration is specifically for SL discovery.

[0171] Optionally, if the target information includes a first transmission parameter configuration shared by SL discovery and SL communication, the first transmission parameter configuration includes the correspondence between channel busy rate (CBR), priority, and the first transmission parameter.

[0172] Optionally, the first transmission parameter includes at least one of the following:

[0173] The first maximum number of transmissions for PSSCH;

[0174] PSSCH's First Maximum Modulation and Coding Scheme Strategy (MCS) Index;

[0175] The first minimal MCS index of PSSCH;

[0176] The first maximum number of sub-channels in PSSCH;

[0177] The first minimum number of sub-channels in PSSCH;

[0178] The first maximum transmit power of PSSCH;

[0179] The first maximum transmit power of PSCCH;

[0180] The first upper limit of channel occupancy rate (CR).

[0181] Optionally, if the target information includes a second transmission parameter configuration specifically for SL discovery, the second transmission parameter configuration includes a correspondence between at least one of CBR and SL discovery distance level and the second transmission parameter.

[0182] Optionally, when the second transmission parameter configuration includes a correspondence between CBR and the second transmission parameter, or when the second transmission parameter configuration includes a correspondence between CRB, SL discovery distance level and the second transmission parameter, the second transmission parameter includes at least one of the following:

[0183] The second maximum number of transmissions for PSSCH;

[0184] The second largest MCS index in PSSCH;

[0185] The second smallest MCS index of PSSCH;

[0186] The second largest number of sub-channels in PSSCH;

[0187] The second minimum number of sub-channels in PSSCH;

[0188] The second maximum transmit power of PSSCH;

[0189] The second maximum transmit power of PSCCH.

[0190] The second upper limit of CR.

[0191] Optionally, when the second transmission parameter configuration includes a correspondence between the SL discovery distance level and the second transmission parameter, the second transmission parameter includes at least one of the following:

[0192] The third maximum transmit power of PSSCH;

[0193] The third maximum transmit power of PSCCH;

[0194] Power offset of PSSCH;

[0195] Power offset of PSCCH;

[0196] PSSCH power factor;

[0197] Power factor of PSCCH.

[0198] For details regarding the first and second transmission parameter configurations mentioned above, please refer to [link / reference needed]. Figure 2 The descriptions in the terminal-side embodiments shown will not be repeated here.

[0199] It should be noted that the channel transmission parameter determination method provided in this application embodiment can be executed by a channel transmission parameter determination device, or by a control module in the channel transmission parameter determination device for executing the channel transmission parameter determination method.

[0200] The following embodiments use the channel transmission parameter determination device to perform the channel transmission parameter determination method as an example to illustrate the channel transmission parameter determination device provided in this application.

[0201] Please see Figure 4 , Figure 4 This is a structural diagram of a channel transmission parameter determination device provided in an embodiment of this application. The first channel transmission parameter determination device 500 includes:

[0202] The first determining module 501 is used to determine the transmission parameters of the secondary link SL discovery based on the upper layer indication information and the target information, wherein the target information is configured or pre-configured by the network-side device.

[0203] The second determining module 502 is used to determine the transmission parameters of the Physical Secondary Link Shared Channel (PSSCH) and / or the transmission parameters of the Physical Secondary Link Control Channel (PSCCH) discovered by the SL based on the transmission parameters discovered by the SL.

[0204] Optionally, the upper-layer indication information includes the SL discovery distance level;

[0205] Wherein, the SL discovery distance level satisfies one of the following:

[0206] There is a correspondence between the SL discovery distance level and the minimum transmission distance authorized by the upper layer;

[0207] There is a correspondence between the SL discovery distance level and the maximum transmission distance authorized by the upper layer;

[0208] There is a correspondence between the SL discovery distance level and the transmission distance range authorized by the upper layer.

[0209] Optionally, the target information includes at least one of the following:

[0210] SL discovers the first transmission parameter configuration shared with SL communication;

[0211] The second send parameter configuration is specifically for SL discovery.

[0212] Optionally, if the target information includes a first transmission parameter configuration shared by SL discovery and SL communication, the first transmission parameter configuration includes the correspondence between channel busy rate (CBR), priority, and the first transmission parameter.

[0213] Optionally, the first transmission parameter includes at least one of the following:

[0214] The first maximum number of transmissions for PSSCH;

[0215] PSSCH's First Maximum Modulation and Coding Scheme Strategy (MCS) Index;

[0216] The first minimal MCS index of PSSCH;

[0217] The first maximum number of sub-channels in PSSCH;

[0218] The first minimum number of sub-channels in PSSCH;

[0219] The first maximum transmit power of PSSCH;

[0220] The first maximum transmit power of PSCCH;

[0221] The first upper limit of channel occupancy rate (CR).

[0222] Optionally, if the target information includes a second transmission parameter configuration specifically for SL discovery, the second transmission parameter configuration includes a correspondence between at least one of CBR and SL discovery distance level and the second transmission parameter.

[0223] Optionally, when the second transmission parameter configuration includes a correspondence between CBR and the second transmission parameter, or when the second transmission parameter configuration includes a correspondence between CRB, SL discovery distance level and the second transmission parameter, the second transmission parameter includes at least one of the following:

[0224] The second maximum number of transmissions for PSSCH;

[0225] The second largest MCS index in PSSCH;

[0226] The second smallest MCS index of PSSCH;

[0227] The second largest number of sub-channels in PSSCH;

[0228] The second minimum number of sub-channels in PSSCH;

[0229] The second maximum transmit power of PSSCH;

[0230] The second maximum transmit power of PSCCH.

[0231] The second upper limit of CR.

[0232] Optionally, when the second transmission parameter configuration includes a correspondence between the SL discovery distance level and the second transmission parameter, the second transmission parameter includes at least one of the following:

[0233] The third maximum transmit power of PSSCH;

[0234] The third maximum transmit power of PSCCH;

[0235] Power offset of PSSCH;

[0236] Power offset of PSCCH;

[0237] PSSCH power factor;

[0238] Power factor of PSCCH.

[0239] Optionally, the first determining module 501 is used to obtain the first maximum transmission power of the PSSCH corresponding to the first transmission parameter configuration and / or the first maximum transmission power of the PSCCH corresponding to the first transmission parameter configuration when the measured CBR or default CBR is the same as the CBR in the first transmission parameter configuration and the preset priority of the PSSCH is the same as the priority in the first transmission parameter configuration.

[0240] Accordingly, the second determining module 502 is used to determine the target transmission power of the PSSCH discovered by the SL based on the first maximum transmission power of the PSSCH corresponding to the first transmission parameter configuration; and / or, to determine the target transmission power of the PSCCH discovered by the SL based on the first maximum transmission power of the PSCCH corresponding to the first transmission parameter configuration.

[0241] Optionally, the first determining module 501 is used to obtain the second maximum transmission power of the PSSCH corresponding to the second transmission parameter configuration and / or the second maximum transmission power of the PSCCH corresponding to the second transmission parameter configuration when the measured CBR or default CBR is the same as the CBR in the second transmission parameter configuration and the upper-layer authorized SL discovery distance level of the terminal is the same as the SL discovery distance level in the second transmission parameter configuration.

[0242] Accordingly, the second determining module 502 is used to determine the target transmission power of the PSSCH discovered by the SL based on the second maximum transmission power of the PSSCH corresponding in the second transmission parameter configuration; and / or, to determine the target transmission power of the PSCCH discovered by the SL based on the second maximum transmission power of the PSCCH corresponding in the second transmission parameter configuration.

[0243] Optionally, the first determining module 501 is configured to, when the upper-layer authorized SL discovery distance level of the terminal is the same as the SL discovery distance level in the second transmission parameter configuration, obtain a first target parameter of the PSSCH corresponding to the second transmission parameter configuration, and / or a second target parameter of the PSCCH corresponding to the second transmission parameter configuration, wherein the first target parameter includes at least one of the third maximum transmission power of the PSSCH, the power offset of the PSSCH, and the power factor of the PSSCH, and the second target parameter includes at least one of the third maximum transmission power of the PSCCH, the power offset of the PSCCH, and the power factor of the PSCCH;

[0244] The second determining module 502 is used to determine the target transmission power of the PSSCH discovered by the SL according to the first target parameter of the PSSCH corresponding in the second transmission parameter configuration; and / or, to determine the target transmission power of the PSCCH discovered by the SL according to the second target parameter of the PSCCH corresponding in the second transmission parameter configuration.

[0245] Optionally, the target transmit power of the PSSCH discovered by the SL is determined based on the first parameter, the second parameter, and the third parameter;

[0246] The first parameter includes any one of the following:

[0247] P CMAX ;

[0248] The third maximum transmission power in the first target parameter;

[0249] P CMAX The smaller of the first target parameter and the third maximum transmission power;

[0250] Among them, P CMAX The first target parameter represents the maximum transmit power value of the serving cell and is determined based on the upper-layer authorized SL discovery distance level and the second transmit parameter configuration of the terminal.

[0251] The second parameter includes: the first maximum transmission power of the PSSCH corresponding to the first transmission parameter configuration;

[0252] The third parameter includes any one of the following:

[0253] P PSSCH,D and P PSSCH,SL The smaller of the two;

[0254] P PSSCH,D and P PSSCH,SL The smaller of the two values ​​is added to the power offset in the first target parameter to obtain the value;

[0255] P PSSCH,D and P PSSCH,SL The smaller of the two values ​​is multiplied by the power factor in the first target parameter to obtain the value;

[0256] Among them, P PSSCH,D P is the first transmit power obtained with reference to downlink path loss. PSSCH,SL The second transmission power is obtained with reference to the secondary link path loss.

[0257] Optionally, the target transmit power of the PSSCH discovered by the SL is determined based on the first parameter, the second parameter, and the third parameter;

[0258] The first parameter includes any one of the following:

[0259] P CMAX ;

[0260] The third maximum transmission power in the first target parameter;

[0261] P CMAX The smaller of the first target parameter and the third maximum transmission power;

[0262] Among them, P CMAX The first target parameter represents the maximum transmit power value of the serving cell and is determined based on the upper-layer authorized SL discovery distance level and the second transmit parameter configuration of the terminal.

[0263] The second parameter includes: the second maximum transmission power of the PSSCH corresponding to the second transmission parameter configuration;

[0264] The third parameter includes any of the following:

[0265] PPSSCH,D and P PSSCH,SL The smaller of the two;

[0266] P PSSCH,D and P PSSCH,SL The smaller of the two values ​​is added to the power offset in the first target parameter to obtain the value;

[0267] P PSSCH,D and P PSSCH,SL The smaller of the two values ​​is multiplied by the power factor in the first target parameter to obtain the value;

[0268] Among them, P PSSCH,D P is the first transmit power obtained with reference to downlink path loss. PSSCH,SL The second transmission power is obtained with reference to the secondary link path loss.

[0269] Optionally, the target transmit power of the PSSCH discovered by the SL is the minimum value among the first parameter, the second parameter, and the third parameter.

[0270] Optionally, the target transmission power of the PSCCH discovered by the SL is determined according to a sixth parameter, or the target transmission power of the PSCCH discovered by the SL is determined according to at least one of the fourth and fifth parameters, and the sixth parameter;

[0271] The fourth parameter includes the third maximum transmission power in the second target parameter;

[0272] The fifth parameter includes: the first maximum transmission power of the PSCCH obtained from the first transmission parameter configuration, or the second maximum transmission power of the PSCCH obtained from the second transmission parameter configuration;

[0273] The sixth parameter includes any one of the following:

[0274] The known transmit power of the PSCCH discovered by the SL is obtained;

[0275] The value obtained by adding the known transmission power to the power offset in the second target parameter;

[0276] The value obtained by multiplying the known transmission power by the power factor in the second target parameter.

[0277] Optionally, the target transmit power of the PSCCH discovered by the SL is any one of the following:

[0278] The value of the sixth parameter;

[0279] The smaller of the fourth parameter and the sixth parameter;

[0280] The smaller of the fifth parameter and the sixth parameter;

[0281] The minimum value among the fourth parameter, the fifth parameter, and the sixth parameter.

[0282] Optionally, the first channel transmission parameter determination device 500 further includes:

[0283] The sending module is configured to send a message according to at least one of the following, based on the sending parameters of the PSSCH discovered by the SL and / or the sending parameters of the PSCCH discovered by the SL:

[0284] SL discovered the relevant message;

[0285] PC5-S related news;

[0286] News related to the PC5-RRC process.

[0287] The first channel transmission parameter determination device 500 in the embodiments of this application can be a device, or it can be a component, integrated circuit, or chip in a terminal.

[0288] The first channel transmission parameter determination device 500 in this embodiment can be a device with an operating system. This operating system can be Android, iOS, or other possible operating systems; this embodiment does not specifically limit its use.

[0289] The first channel transmission parameter determination device 500 provided in this application embodiment can achieve... Figure 2 The various processes implemented in the method embodiments achieve the same technical effect, and will not be described again here to avoid repetition.

[0290] Please see Figure 5 , Figure 5 This is a structural diagram of a channel transmission parameter determination device provided in an embodiment of this application. The second channel transmission parameter determination device 600 includes:

[0291] The sending module 601 is used by the network-side device to send target information to the terminal. The target information is used by the terminal to determine the sending parameters of the Physical Secondary Link Shared Channel (PSSCH) discovered by the secondary link SL, and / or the sending parameters of the Physical Secondary Link Control Channel (PSCCH) discovered by the SL.

[0292] Optionally, the target information includes at least one of the following:

[0293] SL discovers the first transmission parameter configuration shared with SL communication;

[0294] The second send parameter configuration is specifically for SL discovery.

[0295] Optionally, if the target information includes a first transmission parameter configuration shared by SL discovery and SL communication, the first transmission parameter configuration includes the correspondence between channel busy rate (CBR), priority, and the first transmission parameter.

[0296] Optionally, the first transmission parameter includes at least one of the following:

[0297] The first maximum number of transmissions for PSSCH;

[0298] PSSCH's First Maximum Modulation and Coding Scheme Strategy (MCS) Index;

[0299] The first minimal MCS index of PSSCH;

[0300] The first maximum number of sub-channels in PSSCH;

[0301] The first minimum number of sub-channels in PSSCH;

[0302] The first maximum transmit power of PSSCH;

[0303] The first maximum transmit power of PSCCH;

[0304] The first upper limit of channel occupancy rate (CR).

[0305] Optionally, if the target information includes a second transmission parameter configuration specifically for SL discovery, the second transmission parameter configuration includes a correspondence between at least one of CBR and SL discovery distance level and the second transmission parameter.

[0306] Optionally, when the second transmission parameter configuration includes a correspondence between CBR and the second transmission parameter, or when the second transmission parameter configuration includes a correspondence between CRB, SL discovery distance level and the second transmission parameter, the second transmission parameter includes at least one of the following:

[0307] The second maximum number of transmissions for PSSCH;

[0308] The second largest MCS index in PSSCH;

[0309] The second smallest MCS index of PSSCH;

[0310] The second largest number of sub-channels in PSSCH;

[0311] The second minimum number of sub-channels in PSSCH;

[0312] The second maximum transmit power of PSSCH;

[0313] The second maximum transmit power of PSCCH.

[0314] The second upper limit of CR.

[0315] Optionally, when the second transmission parameter configuration includes a correspondence between the SL discovery distance level and the second transmission parameter, the second transmission parameter includes at least one of the following:

[0316] The third maximum transmit power of PSSCH;

[0317] The third maximum transmit power of PSCCH;

[0318] Power offset of PSSCH;

[0319] Power offset of PSCCH;

[0320] PSSCH power factor;

[0321] Power factor of PSCCH.

[0322] The second channel transmission parameter determination device 600 provided in this application embodiment can achieve... Figure 3 The various processes implemented in the method embodiments achieve the same technical effect, and will not be described again here to avoid repetition.

[0323] Optional, such as Figure 6 As shown, this application embodiment also provides a communication device 70, including a processor 71, a memory 72, and a program or instructions stored in the memory 72 and executable on the processor 71. For example, when the communication device 70 is a terminal, the program or instructions executed by the processor 71 implement the above-mentioned... Figure 2 The various processes of the channel transmission parameter determination method embodiment shown can achieve the same technical effect. When the communication device 70 is a network-side device, the above-described procedure or instruction is implemented when executed by the processor 71. Figure 3 The various processes of the channel transmission parameter determination method embodiment shown can achieve the same technical effect.

[0324] Figure 7 A schematic diagram of the hardware structure of a terminal to implement an embodiment of this application.

[0325] The terminal 1000 includes, but is not limited to, the following components: radio frequency unit 1001, network module 1002, audio output unit 1003, input unit 1004, sensor 1005, display unit 1006, user input unit 1007, interface unit 1008, memory 1009, and processor 1010.

[0326] Those skilled in the art will understand that the terminal 1000 may also include a power supply (such as a battery) for supplying power to various components. The power supply may be logically connected to the processor 1010 through a power management system, thereby enabling functions such as managing charging, discharging, and power consumption through the power management system. Figure 7 The terminal structure shown does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0327] It should be understood that, in this embodiment, the input unit 1004 may include a graphics processing unit (GPU) 10041 and a microphone 10042. The GPU 10041 processes image data of still images or videos obtained by an image capture device (such as a camera) in video capture mode or image capture mode. The display unit 1006 may include a display panel 10061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 1007 includes a touch panel 10071 and other input devices 10072. The touch panel 10071 is also called a touch screen. The touch panel 10071 may include a touch detection device and a touch controller. Other input devices 10072 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, power buttons, etc.), trackballs, mice, and joysticks, which will not be described in detail here.

[0328] In this embodiment, the radio frequency unit 1001 receives downlink data from the network-side device and processes it for the processor 1010; additionally, it sends uplink data to the base station. Typically, the radio frequency unit 1001 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, etc.

[0329] The memory 1009 can be used to store software programs or instructions and various data. The memory 1009 may primarily include a program or instruction storage area and a data storage area. The program or instruction storage area may store the operating system, application programs or instructions required for at least one function (such as sound playback, image playback, etc.). Furthermore, the memory 1009 may include high-speed random access memory and non-volatile memory, wherein the non-volatile 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. For example, at least one disk storage device, flash memory device, or other non-volatile solid-state storage device.

[0330] Processor 1010 may include one or more processing units; optionally, processor 1010 may integrate an application processor and a modem processor, wherein the application processor mainly handles the operating system, user interface, and applications or instructions, and the modem processor mainly handles wireless communication, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into processor 1010.

[0331] The processor 1010 is used to determine the transmission parameters for the discovery of the secondary link SL based on the upper-layer indication information and the target information, wherein the target information is configured or pre-configured by the network-side device.

[0332] Based on the transmission parameters discovered by the SL, determine the transmission parameters of the Physical Secondary Link Shared Channel (PSSCH) discovered by the SL, and / or the transmission parameters of the Physical Secondary Link Control Channel (PSCCH) discovered by the SL.

[0333] Optionally, the upper-layer indication information includes the SL discovery distance level;

[0334] Wherein, the SL discovery distance level satisfies one of the following:

[0335] There is a correspondence between the SL discovery distance level and the minimum transmission distance authorized by the upper layer;

[0336] There is a correspondence between the SL discovery distance level and the maximum transmission distance authorized by the upper layer;

[0337] There is a correspondence between the SL discovery distance level and the transmission distance range authorized by the upper layer.

[0338] Optionally, the target information includes at least one of the following:

[0339] SL discovers the first transmission parameter configuration shared with SL communication;

[0340] The second send parameter configuration is specifically for SL discovery.

[0341] Optionally, if the target information includes a first transmission parameter configuration shared by SL discovery and SL communication, the first transmission parameter configuration includes the correspondence between channel busy rate (CBR), priority, and the first transmission parameter.

[0342] Optionally, the first transmission parameter includes at least one of the following:

[0343] The first maximum number of transmissions for PSSCH;

[0344] PSSCH's First Maximum Modulation and Coding Scheme Strategy (MCS) Index;

[0345] The first minimal MCS index of PSSCH;

[0346] The first maximum number of sub-channels in PSSCH;

[0347] The first minimum number of sub-channels in PSSCH;

[0348] The first maximum transmit power of PSSCH;

[0349] The first maximum transmit power of PSCCH;

[0350] The first upper limit of channel occupancy rate (CR).

[0351] Optionally, if the target information includes a second transmission parameter configuration specifically for SL discovery, the second transmission parameter configuration includes a correspondence between at least one of CBR and SL discovery distance level and the second transmission parameter.

[0352] Optionally, when the second transmission parameter configuration includes a correspondence between CBR and the second transmission parameter, or when the second transmission parameter configuration includes a correspondence between CRB, SL discovery distance level and the second transmission parameter, the second transmission parameter includes at least one of the following:

[0353] The second maximum number of transmissions for PSSCH;

[0354] The second largest MCS index in PSSCH;

[0355] The second smallest MCS index of PSSCH;

[0356] The second largest number of sub-channels in PSSCH;

[0357] The second minimum number of sub-channels in PSSCH;

[0358] The second maximum transmit power of PSSCH;

[0359] The second maximum transmit power of PSCCH.

[0360] The second upper limit of CR.

[0361] Optionally, when the second transmission parameter configuration includes a correspondence between the SL discovery distance level and the second transmission parameter, the second transmission parameter includes at least one of the following:

[0362] The third maximum transmit power of PSSCH;

[0363] The third maximum transmit power of PSCCH;

[0364] Power offset of PSSCH;

[0365] Power offset of PSCCH;

[0366] PSSCH power factor;

[0367] Power factor of PSCCH.

[0368] Optionally, the processor 1010 is configured to obtain the first maximum transmission power of the PSSCH corresponding to the first transmission parameter configuration and / or the first maximum transmission power of the PSCCH corresponding to the first transmission parameter configuration when the measured CBR or default CBR is the same as the CBR in the first transmission parameter configuration and the preset priority of the PSSCH is the same as the priority in the first transmission parameter configuration.

[0369] The target transmission power of the PSSCH discovered by the SL is determined based on the first maximum transmission power of the PSSCH corresponding to the first transmission parameter configuration; and / or, the target transmission power of the PSCCH discovered by the SL is determined based on the first maximum transmission power of the PSCCH corresponding to the first transmission parameter configuration.

[0370] Optionally, the processor 1010 is configured to, when the measured CBR or default CBR is the same as the CBR in the second transmission parameter configuration, and the upper-layer authorized SL discovery distance level of the terminal is the same as the SL discovery distance level in the second transmission parameter configuration, obtain the second maximum transmission power of the PSSCH corresponding to the second transmission parameter configuration, and / or the second maximum transmission power of the PSCCH corresponding to the second transmission parameter configuration.

[0371] The target transmission power of the PSSCH discovered by the SL is determined based on the second maximum transmission power of the PSSCH corresponding to the second transmission parameter configuration; and / or, the target transmission power of the PSCCH discovered by the SL is determined based on the second maximum transmission power of the PSCCH corresponding to the second transmission parameter configuration.

[0372] Optionally, the processor 1010 is configured to, when the SL discovery distance level authorized by the upper layer is the same as the SL discovery distance level in the second transmission parameter configuration, obtain a first target parameter of the PSSCH corresponding to the second transmission parameter configuration, and / or a second target parameter of the PSCCH corresponding to the second transmission parameter configuration, wherein the first target parameter includes at least one of the third maximum transmission power of the PSSCH, the power offset of the PSSCH, and the power factor of the PSSCH, and the second target parameter includes at least one of the third maximum transmission power of the PSCCH, the power offset of the PSCCH, and the power factor of the PSCCH;

[0373] The target transmission power of the PSSCH discovered by the SL is determined based on the first target parameter of the PSSCH corresponding to the second transmission parameter configuration; and / or, the target transmission power of the PSCCH discovered by the SL is determined based on the second target parameter of the PSCCH corresponding to the second transmission parameter configuration.

[0374] Optionally, the target transmit power of the PSSCH discovered by the SL is determined based on the first parameter, the second parameter, and the third parameter;

[0375] The first parameter includes any one of the following:

[0376] P CMAX ;

[0377] The third maximum transmission power in the first target parameter;

[0378] P CMAX The smaller of the first target parameter and the third maximum transmission power;

[0379] Among them, P CMAX The first target parameter represents the maximum transmit power value of the serving cell and is determined based on the upper-layer authorized SL discovery distance level and the second transmit parameter configuration of the terminal.

[0380] The second parameter includes: the first maximum transmission power of the PSSCH corresponding to the first transmission parameter configuration;

[0381] The third parameter includes any one of the following:

[0382] P PSSCH,D and PPSSCH,SL The smaller of the two;

[0383] P PSSCH,D and P PSSCH,SL The smaller of the two values ​​is added to the power offset in the first target parameter to obtain the value;

[0384] P PSSCH,D and P PSSCH,SL The smaller of the two values ​​is multiplied by the power factor in the first target parameter to obtain the value;

[0385] Among them, P PSSCH,D P is the first transmit power obtained with reference to downlink path loss. PSSCH,SL The second transmission power is obtained with reference to the secondary link path loss.

[0386] Optionally, the target transmit power of the PSSCH discovered by the SL is determined based on the first parameter, the second parameter, and the third parameter;

[0387] The first parameter includes any one of the following:

[0388] P CMAX ;

[0389] The third maximum transmission power in the first target parameter;

[0390] P CMAX The smaller of the first target parameter and the third maximum transmission power;

[0391] Among them, P CMAX The first target parameter represents the maximum transmit power value of the serving cell and is determined based on the upper-layer authorized SL discovery distance level and the second transmit parameter configuration of the terminal.

[0392] The second parameter includes: the second maximum transmission power of the PSSCH corresponding to the second transmission parameter configuration;

[0393] The third parameter includes any of the following:

[0394] P PSSCH,D and P PSSCH,SL The smaller of the two;

[0395] P PSSCH,D and P PSSCH,SL The smaller of the two values ​​is added to the power offset in the first target parameter to obtain the value;

[0396] P PSSCH,D and P PSSCH,SL The smaller of the two values ​​is multiplied by the power factor in the first target parameter to obtain the value;

[0397] Among them, P PSSCH,D P is the first transmit power obtained with reference to downlink path loss. PSSCH,SL The second transmission power is obtained with reference to the secondary link path loss.

[0398] Optionally, the target transmit power of the PSSCH discovered by the SL is the minimum value among the first parameter, the second parameter, and the third parameter.

[0399] Optionally, the target transmission power of the PSCCH discovered by the SL is determined according to a sixth parameter, or the target transmission power of the PSCCH discovered by the SL is determined according to at least one of the fourth and fifth parameters, and the sixth parameter;

[0400] The fourth parameter includes the third maximum transmission power in the second target parameter;

[0401] The fifth parameter includes: the first maximum transmission power of the PSCCH obtained from the first transmission parameter configuration, or the second maximum transmission power of the PSCCH obtained from the second transmission parameter configuration;

[0402] The sixth parameter includes any one of the following:

[0403] The known transmit power of the PSCCH discovered by the SL is obtained;

[0404] The value obtained by adding the known transmission power to the power offset in the second target parameter;

[0405] The value obtained by multiplying the known transmission power by the power factor in the second target parameter.

[0406] Optionally, the target transmit power of the PSCCH discovered by the SL is any one of the following:

[0407] The value of the sixth parameter;

[0408] The smaller of the fourth parameter and the sixth parameter;

[0409] The smaller of the fifth parameter and the sixth parameter;

[0410] The minimum value among the fourth parameter, the fifth parameter, and the sixth parameter.

[0411] Optionally, the radio frequency unit 1001 is configured to send at least one of the following messages based on the transmission parameters of the PSSCH discovered by the SL and / or the transmission parameters of the PSCCH discovered by the SL:

[0412] SL discovered the relevant message;

[0413] PC5-S related news;

[0414] News related to the PC5-RRC process.

[0415] The terminal 1000 provided in the above embodiments can achieve Figure 2 The various processes implemented in the method embodiments achieve the same technical effect, and will not be described again here to avoid repetition.

[0416] Specifically, embodiments of this application also provide a network-side device. For example... Figure 8 As shown, the network device 900 includes an antenna 91, a radio frequency (RF) device 92, and a baseband device 93. The antenna 91 is connected to the RF device 92. In the uplink direction, the RF device 92 receives information through the antenna 91 and sends the received information to the baseband device 93 for processing. In the downlink direction, the baseband device 93 processes the information to be transmitted and sends it to the RF device 92. The RF device 92 processes the received information and then transmits it through the antenna 91.

[0417] The aforementioned frequency band processing device can be located in the baseband device 93. The method executed by the network-side device in the above embodiments can be implemented in the baseband device 93, which includes a processor 94 and a memory 95.

[0418] Baseband device 93 may include, for example, at least one baseband board on which multiple chips are disposed, such as Figure 8 As shown, one of the chips, for example, is a processor 94, which is connected to a memory 95 to call the program in the memory 95 and execute the network device operation shown in the above method embodiment.

[0419] The baseband device 93 may also include a network interface 96 for exchanging information with the radio frequency device 92, such as a common public radio interface (CPRI).

[0420] Specifically, the network-side device in this embodiment of the invention further includes: instructions or programs stored in memory 95 and executable on processor 94, wherein processor 94 calls the instructions or programs in memory 95 to execute. Figure 5 The methods executed by each module shown achieve the same technical effect, and to avoid repetition, they will not be described in detail here.

[0421] This application embodiment also provides a readable storage medium storing a program or instructions that are executed by a processor. Figure 2 or Figure 3The various processes in the method embodiments described herein can achieve the same technical effect, and will not be repeated here to avoid repetition.

[0422] The processor mentioned above is the processor in the terminal or network-side device described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0423] This application embodiment also provides a chip, the chip including a processor and a communication interface, the communication interface being coupled to the processor, the processor being used to run network-side device programs or instructions to achieve the above-mentioned... Figure 2 or Figure 3 The various processes in the method embodiments can achieve the same technical effect, and will not be described again here to avoid repetition.

[0424] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0425] This application also provides a computer program product, which is stored in a non-volatile memory and is executed by at least one processor to implement the above. Figure 2 or Figure 3 The various processes in the method embodiments can achieve the same technical effect, and will not be described again here to avoid repetition.

[0426] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should 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 also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0427] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, air conditioner, or network, etc.) to execute the methods described in the various embodiments of this application.

[0428] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A method of determining a channel transmission parameter, characterized by, Comprise: A terminal determines a transmission parameter of a sidelink (SL) discovery based on upper layer indication information and target information, wherein the target information is configured or pre-configured by a network side device; The terminal determines a transmission parameter of a physical sidelink shared channel (PSSCH) of the SL discovery and / or a transmission parameter of a physical sidelink control channel (PSCCH) of the SL discovery according to the transmission parameter of the SL discovery; The target information comprises at least one of: A first transmission parameter configuration shared by the SL discovery and SL communication, wherein the first transmission parameter configuration comprises a correspondence between a channel busy ratio (CBR) and a first transmission parameter, and a correspondence between a priority and the first transmission parameter; A second transmission parameter configuration dedicated to the SL discovery, wherein the second transmission parameter configuration comprises a correspondence between at least one of a CBR and an SL discovery distance level and a second transmission parameter; In a case where the first transmission parameter comprises at least one of a first maximum transmission power of a PSSCH and a first maximum transmission power of a PSCCH, the terminal determines the transmission parameter of the SL discovery based on the upper layer indication information and the target information, comprising: the terminal obtains a corresponding first maximum transmission power of a PSSCH in the first transmission parameter configuration and / or a corresponding first maximum transmission power of a PSCCH in the first transmission parameter configuration in a case where a measured CBR or a default CBR is the same as a CBR in the first transmission parameter configuration, and a preset priority of the PSSCH is the same as a priority in the first transmission parameter configuration; The terminal determines a transmission parameter of a physical sidelink shared channel (PSSCH) of the SL discovery and / or a transmission parameter of a physical sidelink control channel (PSCCH) of the SL discovery according to the transmission parameter of the SL discovery, comprising: the terminal determines a target transmission power of a PSSCH of the SL discovery according to a corresponding first maximum transmission power of the PSSCH in the first transmission parameter configuration; and / or, determines a target transmission power of a PSCCH of the SL discovery according to a corresponding first maximum transmission power of the PSCCH in the first transmission parameter configuration; In a case that the second transmission parameter configuration comprises a correspondence between a CBR and the second transmission parameter, or the second transmission parameter configuration comprises a correspondence between a CBR, a SL discovery distance level and the second transmission parameter, and the second transmission parameter comprises at least one of a second maximum transmission power of a PSSCH and a second maximum transmission power of a PSCCH, the terminal determines a transmission parameter of a sidelink (SL) discovery based on the upper layer indication information and the target information, comprising: in a case that a measured CBR or a default CBR is the same as a CBR in the second transmission parameter configuration, and a SL discovery distance level authorized by an upper layer of the terminal is the same as a SL discovery distance level in the second transmission parameter configuration, the terminal acquires a corresponding second maximum transmission power of a PSSCH in the second transmission parameter configuration, and / or a corresponding second maximum transmission power of a PSCCH in the second transmission parameter configuration; The terminal determines a transmission parameter of a physical sidelink shared channel (PSSCH) of the SL discovery and / or a transmission parameter of a physical sidelink control channel (PSCCH) of the SL discovery according to the transmission parameter of the SL discovery, comprising: the terminal determines a target transmission power of the PSSCH of the SL discovery according to a corresponding second maximum transmission power of the PSSCH in the second transmission parameter configuration; and / or determines a target transmission power of the PSCCH of the SL discovery according to a corresponding second maximum transmission power of the PSCCH in the second transmission parameter configuration; In a case that the second transmission parameter configuration comprises a correspondence between a SL discovery distance level and the second transmission parameter, and the second transmission parameter comprises at least one of a third maximum transmission power of a PSSCH, a third maximum transmission power of a PSCCH, a power offset of the PSSCH, a power offset of the PSCCH, a power factor of the PSSCH and a power factor of the PSCCH, the terminal determines a transmission parameter of a sidelink (SL) discovery based on the upper layer indication information and the target information, comprising: in a case that a SL discovery distance level authorized by an upper layer of the terminal is the same as a SL discovery distance level in the second transmission parameter configuration, the terminal acquires a corresponding first target parameter in the second transmission parameter configuration and / or a corresponding second target parameter in the second transmission parameter configuration, wherein the first target parameter comprises at least one of the third maximum transmission power of the PSSCH, the power offset of the PSSCH and the power factor of the PSSCH, and the second target parameter comprises at least one of the third maximum transmission power of the PSCCH, the power offset of the PSCCH and the power factor of the PSCCH; The terminal determines, according to the transmission parameter of the SL discovery, a transmission parameter of a physical sidelink shared channel (PSSCH) of the SL discovery and / or a transmission parameter of a physical sidelink control channel (PSCCH) of the SL discovery, including: the terminal determines a target transmission power of the PSSCH of the SL discovery according to a first target parameter of a corresponding PSSCH in the second transmission parameter configuration; and / or determines a target transmission power of the PSCCH of the SL discovery according to a second target parameter of a corresponding PSCCH in the second transmission parameter configuration.

2. The method of claim 1, wherein, The upper-layer indication information includes an SL discovery distance level. The SL discovery distance level satisfies one of the following conditions: The SL discovery distance level has a corresponding relationship with a minimum transmission distance authorized by the upper layer. The SL discovery distance level has a corresponding relationship with a maximum transmission distance authorized by the upper layer. The SL discovery distance level has a corresponding relationship with a transmission distance range authorized by the upper layer.

3. The method of claim 1, wherein, The first transmission parameter further includes at least one of the following: A first maximum number of transmissions of the PSSCH; A first maximum modulation and coding scheme (MCS) index of the PSSCH; A first minimum MCS index of the PSSCH; A first maximum number of sub-channels of the PSSCH; A first minimum number of sub-channels of the PSSCH; A first upper limit of a channel occupancy ratio (CR).

4. The method of claim 1, wherein, In a case where the second transmission parameter configuration includes a corresponding relationship between a CBR and a second transmission parameter, or the second transmission parameter configuration includes a corresponding relationship between a CBR, an SL discovery distance level and a second transmission parameter, the second transmission parameter further includes at least one of the following: A second maximum number of transmissions of the PSSCH; A second maximum MCS index of the PSSCH; A second minimum MCS index of the PSSCH; A second maximum number of sub-channels of the PSSCH; A second minimum number of sub-channels of the PSSCH; A second upper limit of a CR.

5. The method of claim 1, wherein, In a case where the target transmission power of the PSSCH of the SL discovery is determined according to a first maximum transmission power of a corresponding PSSCH in the first transmission parameter configuration, the target transmission power of the PSSCH of the SL discovery is determined according to a first parameter, a second parameter and a third parameter; The first parameter includes: ； wherein, denotes a maximum transmission power value of the serving cell; The second parameter includes a first maximum transmission power of a corresponding PSSCH in the first transmission parameter configuration; The third parameter includes any one of the following: P PSSCH,D and P PSSCH,SL the smaller of the two; P PSSCH,D and P PSSCH,SL the smaller of the two values added to a power offset in the first target parameter; P PSSCH,D and P PSSCH,SL the smaller of the two multiplied by a power factor in the first target parameter. wherein, P PSSCH,D a first transmit power obtained as a reference according to a downlink path loss, P PSSCH,SL a second transmit power obtained as a reference according to a sidelink path loss.

6. The method of claim 1, wherein, In a case where the target transmission power of the PSSCH of the SL discovery is determined according to a second maximum transmission power of a corresponding PSSCH in the second transmission parameter configuration, the target transmission power of the PSSCH of the SL discovery is determined according to a first parameter, a second parameter and a third parameter; The first parameter includes: ； wherein, denotes a maximum transmission power value of the serving cell; The second parameter includes a second maximum transmission power of a corresponding PSSCH in the second transmission parameter configuration; The third parameter includes any one of the following: P PSSCH,D and P PSSCH,SL the smaller of the two; P PSSCH,D and P PSSCH,SL the smaller of the two values added to a power offset in the first target parameter; P PSSCH,D and P PSSCH,SL the smaller of the two multiplied by a power factor in the first target parameter. wherein, P PSSCH,D a first transmit power obtained as a reference according to a downlink path loss, P PSSCH,SL a second transmit power obtained as a reference according to a sidelink path loss.

7. The method according to claim 5 or 6, characterized in that, The target transmission power of the PSSCH of the SL discovery is the minimum value of the first parameter, the second parameter and the third parameter.

8. The method of claim 1, wherein, In a case that a second target parameter of a corresponding PSCCH in the second transmission parameter configuration is used to determine a target transmission power of the PSCCH of the SL discovery, the target transmission power of the PSCCH of the SL discovery is determined according to a sixth parameter, or the target transmission power of the PSCCH of the SL discovery is determined according to the fourth parameter and the sixth parameter; The fourth parameter includes a third maximum transmission power in the second target parameter; The sixth parameter includes any one of the following: The known transmission power of the PSCCH of the SL discovery obtained; A value obtained by adding the known transmission power and a power offset in the second target parameter; A value obtained by multiplying the known transmission power and a power factor in the second target parameter.

9. The method of claim 8, wherein, The target transmission power of the PSCCH of the SL discovery is any one of the following: A value of the sixth parameter; A smaller value between the fourth parameter and the sixth parameter.

10. The method of claim 1, wherein, The method further includes: According to the transmission parameter of the PSSCH of the SL discovery, and / or the transmission parameter of the PSCCH of the SL discovery, a message in at least one of the following is transmitted: An SL discovery related message; A PC5-S related message; A PC5-RRC flow related message.

11. A method of determining a channel transmission parameter, characterized by, It includes: A network side device transmits target information to a terminal, and the target information is used by the terminal to determine a transmission parameter of a physical sidelink shared channel (PSSCH) of a sidelink (SL) discovery, and / or a transmission parameter of a physical sidelink control channel (PSCCH) of the SL discovery; The target information includes at least one of the following: A first transmission parameter configuration shared by SL discovery and SL communication, the first transmission parameter configuration including a correspondence between a channel busy ratio (CBR) and a first transmission parameter, and a correspondence between a priority and the first transmission parameter; A second transmission parameter configuration dedicated to SL discovery, the second transmission parameter configuration including a correspondence between at least one of a CBR and an SL discovery distance level and a second transmission parameter; In a case that the first transmission parameter includes at least one of a first maximum transmission power of a PSSCH and a first maximum transmission power of a PSCCH, a CBR or a default CBR obtained by the terminal is the same as a CBR in the first transmission parameter configuration, and a preset priority of the PSSCH is the same as a priority in the first transmission parameter configuration, a first maximum transmission power of a corresponding PSSCH in the first transmission parameter configuration is used to determine a target transmission power of the PSSCH of the SL discovery, and / or a first maximum transmission power of a corresponding PSCCH in the first transmission parameter configuration is used to determine a target transmission power of the PSCCH of the SL discovery; and / or, in a case that the second transmission parameter configuration comprises a correspondence between a CBR and the second transmission parameter, or the second transmission parameter configuration comprises a correspondence between a CBR, a SL discovery distance level and the second transmission parameter, the second transmission parameter comprises at least one of a second maximum transmission power of a PSSCH and a second maximum transmission power of a PSCCH, and in a case that a CBR obtained by the terminal or a default CBR is the same as the CBR in the second transmission parameter configuration and a SL discovery distance level authorized by an upper layer of the terminal is the same as the SL discovery distance level in the second transmission parameter configuration, a corresponding second maximum transmission power of the PSSCH in the second transmission parameter configuration is used to determine a target transmission power of the PSSCH for the SL discovery, and / or a corresponding second maximum transmission power of the PSCCH in the second transmission parameter configuration is used to determine a target transmission power of the PSCCH for the SL discovery; and / or, in a case that the second transmission parameter configuration comprises a correspondence between a SL discovery distance level and the second transmission parameter, the second transmission parameter comprises at least one of a third maximum transmission power of a PSSCH, a third maximum transmission power of a PSCCH, a power offset of the PSSCH, a power offset of the PSCCH, a power factor of the PSSCH and a power factor of the PSCCH, and in a case that a SL discovery distance level authorized by an upper layer of the terminal is the same as the SL discovery distance level in the second transmission parameter configuration, a corresponding first target parameter of the PSSCH in the second transmission parameter configuration is used to determine a target transmission power of the PSSCH for the SL discovery, and / or a corresponding second target parameter of the PSCCH in the second transmission parameter configuration is used to determine a target transmission power of the PSCCH for the SL discovery; wherein the first target parameter comprises at least one of the third maximum transmission power of the PSSCH, the power offset of the PSSCH and the power factor of the PSSCH, and the second target parameter comprises at least one of the third maximum transmission power of the PSCCH, the power offset of the PSCCH and the power factor of the PSCCH.

12. The method of claim 11, wherein, The first transmission parameter further comprises at least one of: a first maximum number of transmissions of a PSSCH; a first maximum modulation and coding scheme policy MCS index of the PSSCH; a first minimum MCS index of the PSSCH; a first maximum number of sub-channels of the PSSCH; a first minimum number of sub-channels of the PSSCH; a first upper limit of a channel occupancy ratio CR.

13. The method of claim 11, wherein, In a case that the second transmission parameter configuration comprises a correspondence between a CBR and the second transmission parameter, or the second transmission parameter configuration comprises a correspondence between a CBR, a SL discovery distance level and the second transmission parameter, the second transmission parameter further comprises at least one of: a second maximum number of transmissions of a PSSCH; a second maximum MCS index of the PSSCH; a second minimum MCS index of the PSSCH; a second maximum number of sub-channels of the PSSCH; A second minimum number of sub-channels of the PSSCH; A second upper limit of the CR.

14. A channel transmission parameter determination apparatus characterized by comprising: Comprise: A first determining module, configured to determine a transmission parameter of a sidelink (SL) discovery based on upper-layer indication information and target information, wherein the target information is configured or pre-configured by a network side device; A second determining module, configured to determine a transmission parameter of a physical sidelink shared channel (PSSCH) of the SL discovery and / or a transmission parameter of a physical sidelink control channel (PSCCH) of the SL discovery according to the transmission parameter of the SL discovery; The target information comprises at least one of: A first transmission parameter configuration shared by the SL discovery and SL communication, wherein the first transmission parameter configuration comprises a correspondence between a channel busy ratio (CBR) and a first transmission parameter, and a correspondence between a priority and the first transmission parameter; A second transmission parameter configuration dedicated to the SL discovery, wherein the second transmission parameter configuration comprises a correspondence between at least one of a CBR and an SL discovery distance level and a second transmission parameter; In a case where the first transmission parameter comprises at least one of a first maximum transmission power of the PSSCH and a first maximum transmission power of the PSCCH, the determining of the transmission parameter of the SL discovery based on the upper-layer indication information and the target information comprises: in a case where a measured CBR or a default CBR is the same as a CBR in the first transmission parameter configuration, and a preset priority of the PSSCH is the same as a priority in the first transmission parameter configuration, obtaining a corresponding first maximum transmission power of the PSSCH in the first transmission parameter configuration and / or a corresponding first maximum transmission power of the PSCCH in the first transmission parameter configuration; The determining of the transmission parameter of the PSSCH of the SL discovery and / or the transmission parameter of the PSCCH of the SL discovery according to the transmission parameter of the SL discovery comprises: determining a target transmission power of the PSSCH of the SL discovery according to the corresponding first maximum transmission power of the PSSCH in the first transmission parameter configuration; and / or determining a target transmission power of the PSCCH of the SL discovery according to the corresponding first maximum transmission power of the PSCCH in the first transmission parameter configuration; And / or, in the case that the second transmission parameter configuration includes a correspondence between CBR and the second transmission parameter, or the second transmission parameter configuration includes a correspondence between CBR, SL discovery distance level and the second transmission parameter, and the second transmission parameter includes at least one of a second maximum transmission power of PSSCH and a second maximum transmission power of PSCCH, the determining, based on the upper layer indication information and the target information, of the transmission parameter of the sidelink (SL) discovery includes: in the case that a measured CBR or a default CBR is the same as a CBR in the second transmission parameter configuration, and a SL discovery distance level authorized by an upper layer of the device is the same as a SL discovery distance level in the second transmission parameter configuration, obtaining a corresponding second maximum transmission power of PSSCH in the second transmission parameter configuration, and / or a corresponding second maximum transmission power of PSCCH in the second transmission parameter configuration; The determining, according to the transmission parameter of the SL discovery, of a transmission parameter of a physical sidelink shared channel (PSSCH) of the SL discovery and / or a transmission parameter of a physical sidelink control channel (PSCCH) of the SL discovery includes: determining a target transmission power of the PSSCH of the SL discovery according to a corresponding second maximum transmission power of PSSCH in the second transmission parameter configuration; and / or determining a target transmission power of the PSCCH of the SL discovery according to a corresponding second maximum transmission power of PSCCH in the second transmission parameter configuration; And / or, in the case that the second transmission parameter configuration includes a correspondence between SL discovery distance level and the second transmission parameter, and the second transmission parameter includes at least one of a third maximum transmission power of PSSCH; a third maximum transmission power of PSCCH; a power offset of PSSCH; a power offset of PSCCH; a power factor of PSSCH and a power factor of PSCCH, the determining, based on the upper layer indication information and the target information, of the transmission parameter of the SL discovery includes: In the case that a SL discovery distance level authorized by an upper layer of the device is the same as a SL discovery distance level in the second transmission parameter configuration, obtaining a corresponding first target parameter of PSSCH in the second transmission parameter configuration and / or a corresponding second target parameter of PSCCH in the second transmission parameter configuration, wherein the first target parameter includes at least one of a third maximum transmission power of PSSCH, a power offset of PSSCH and a power factor of PSSCH, and the second target parameter includes at least one of a third maximum transmission power of PSCCH, a power offset of PSCCH and a power factor of PSCCH; The determining, according to the SL discovery transmission parameter, of a transmission parameter of a physical sidelink shared channel (PSSCH) of the SL discovery and / or a transmission parameter of a physical sidelink control channel (PSCCH) of the SL discovery includes: determining a target transmission power of the PSSCH of the SL discovery according to a first target parameter of a corresponding PSSCH in the second transmission parameter configuration; and / or determining a target transmission power of the PSCCH of the SL discovery according to a second target parameter of a corresponding PSCCH in the second transmission parameter configuration.

15. The apparatus of claim 14, wherein, The upper-layer indication information includes an SL discovery distance level. The SL discovery distance level satisfies one of the following: The SL discovery distance level has a corresponding relationship with a minimum transmission distance authorized by the upper layer. The SL discovery distance level has a corresponding relationship with a maximum transmission distance authorized by the upper layer. The SL discovery distance level has a corresponding relationship with a transmission distance range authorized by the upper layer.

16. A channel transmission parameter determination apparatus characterized by comprising: The target information includes at least one of the following: The target information includes at least one of the following: The first transmission parameter configuration shared by the SL discovery and the SL communication includes a corresponding relationship between a channel busy ratio (CBR) and a first transmission parameter, and a corresponding relationship between a priority and the first transmission parameter. The second transmission parameter configuration dedicated to the SL discovery includes a corresponding relationship between at least one of a CBR and an SL discovery distance level and a second transmission parameter. In a case where the first transmission parameter includes at least one of a first maximum transmission power of a PSSCH and a first maximum transmission power of a PSCCH, a CBR measured and obtained by the terminal is the same as a CBR in the first transmission parameter configuration, and a preset priority of the PSSCH is the same as a priority in the first transmission parameter configuration, a first maximum transmission power of a corresponding PSSCH in the first transmission parameter configuration is used to determine a target transmission power of the PSSCH of the SL discovery, and / or a first maximum transmission power of a corresponding PSCCH in the first transmission parameter configuration is used to determine a target transmission power of the PSCCH of the SL discovery. ​ And / or, in the second transmission parameter configuration includes the correspondence between CBR and the second transmission parameter, or the second transmission parameter configuration includes the correspondence between CBR, SL discovery distance level and the second transmission parameter; The second transmission parameter includes at least one of the second maximum transmission power of PSSCH and the second maximum transmission power of PSCCH, the CBR obtained by the terminal measurement is the same as the CBR in the second transmission parameter configuration, and the SL discovery distance level authorized by the upper layer of the terminal is the same as the SL discovery distance level in the second transmission parameter configuration, the corresponding second maximum transmission power of PSSCH in the second transmission parameter configuration is used to determine the target transmission power of PSSCH of the SL discovery, and / or the corresponding second maximum transmission power of PSCCH in the second transmission parameter configuration is used to determine the target transmission power of PSCCH of the SL discovery. And / or, in the second transmission parameter configuration includes the correspondence between SL discovery distance level and the second transmission parameter, the second transmission parameter includes at least one of the third maximum transmission power of PSSCH, the third maximum transmission power of PSCCH, the power offset of PSSCH, the power offset of PSCCH, the power factor of PSSCH and the power factor of PSCCH, the SL discovery distance level authorized by the upper layer of the terminal is the same as the SL discovery distance level in the second transmission parameter configuration, the corresponding first target parameter of PSSCH in the second transmission parameter configuration is used to determine the target transmission power of PSSCH of the SL discovery, and / or the corresponding second target parameter of PSCCH in the second transmission parameter configuration is used to determine the target transmission power of PSCCH of the SL discovery; Wherein, the first target parameter includes at least one of the third maximum transmission power of PSSCH, the power offset of PSSCH and the power factor of PSSCH, and the second target parameter includes at least one of the third maximum transmission power of PSCCH, the power offset of PSCCH and the power factor of PSCCH.

17. A terminal, characterized by The processor, the memory and the program or instructions stored in the memory and executable on the processor are included, and the processor executes the program or instructions to realize the steps of the channel transmission parameter determination method in any one of claims 1 to 10.

18. A network-side device, comprising: The processor, the memory and the program or instructions stored in the memory and executable on the processor are included, and the processor executes the program or instructions to realize the steps of the channel transmission parameter determination method in any one of claims 11 to 13.

19. A readable storage medium, characterized by, The program or instructions stored in the readable storage medium are executed by the processor to realize the steps of the channel transmission parameter determination method in any one of claims 1 to 10, or the program or instructions stored in the readable storage medium are executed by the processor to realize the steps of the channel transmission parameter determination method in any one of claims 11 to 13.

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