WO2023011342A1

WO2023011342A1 - Method and apparatus for determining channel transmission parameters, and related device

Info

Publication number: WO2023011342A1
Application number: PCT/CN2022/108931
Authority: WO
Inventors: 郑倩; 鲍炜; 刘进华
Original assignee: 维沃移动通信有限公司
Priority date: 2021-08-03
Filing date: 2022-07-29
Publication date: 2023-02-09
Also published as: CN115707008A

Abstract

The present application discloses a method and apparatus for determining channel transmission parameters, and a related device, and belongs to the technical field of communications. The method comprises: a terminal determines, on the basis of upper-layer indication information and target information, transmission parameters discovered by a sidelink (SL), the target information being configured or preconfigured by a network-side device; and the terminal determines, according to the transmission parameter discovered by the SL, transmission parameters of a physical sidelink shared channel (PSSCH) that are discovered by the SL and/or transmission parameters of a physical sidelink control channel (PSCCH) that are discovered by the SL.

Description

Channel transmission parameter determination method, device and related equipment

Cross References to Related Applications

This application claims priority to Chinese Patent Application No. 202110888344.0 filed in China on Aug. 3, 2021, the entire contents of which are hereby incorporated by reference.

technical field

The present application belongs to the technical field of communications, and in particular relates to a method, device and related equipment for determining channel transmission parameters.

Background technique

The relay technology in the wireless communication system adds one or more relay nodes between the base station and the terminal, which is responsible for one or more forwarding of the wireless signal, that is, the wireless signal needs to go through multiple hops to reach the terminal. Wireless relay technology can not only be used to expand cell coverage, make up for blind spots in cell coverage, but also improve cell capacity through space resource reuse. For indoor coverage, the relay (Relay) technology can also overcome the penetration loss and improve the quality of indoor coverage.

At present, there is no solution for how the side link (SideLink, SL) discovery supports the SL discovery distance requirement. The transmission parameters of the SL discovery may not match the configuration information of the terminal, and the communication performance is low.

Contents of the invention

Embodiments of the present application provide a channel transmission parameter determination method, device and related equipment, which can solve the problem that the transmission parameters found by the SL may not match the configuration information of the terminal and the communication performance is low.

In the first aspect, a method for determining channel transmission parameters is provided, including:

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

The terminal determines 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 according to the transmission parameters discovered by the SL.

In the second aspect, a method for determining channel transmission parameters is provided, including:

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 physical secondary link control channel discovered by the SL Transmission parameters of the PSCCH.

In a third aspect, an apparatus for determining channel transmission parameters is provided, including:

The first determination module is configured to determine transmission parameters discovered by the secondary link SL based on upper layer indication information and target information, the target information being configured or pre-configured by the network side device;

The second determination module is configured to determine the transmission parameters of the physical secondary link shared channel PSSCH discovered by the SL according to the transmission parameters discovered by the SL, and/or the transmission of the physical secondary link control channel PSCCH discovered by the SL parameter.

In a fourth aspect, an apparatus for determining channel transmission parameters is provided, including:

A sending module, configured to send target information to the terminal, where 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 physical secondary link discovered by the SL Transmission parameters of the control channel PSCCH.

In a fifth aspect, a terminal is provided, including a processor, a memory, and a program or instruction stored on the memory and operable on the processor, and when the program or instruction is executed by the processor, the following is implemented: Steps in the method for determining channel transmission parameters described in the first aspect.

According to the sixth aspect, a network side device is provided, including a processor, a memory, and a program or instruction stored in the memory and operable on the processor, when the program or instruction is executed by the processor The steps of the method for determining channel transmission parameters as described in the second aspect are realized.

In the seventh aspect, a readable storage medium is provided, on which a program or instruction is stored, and when the program or instruction is executed by a processor, the channel sending parameters as described in the first aspect or the second aspect are realized Determine the steps of the method.

In an eighth aspect, a chip is provided, the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run a network-side device program or instruction to implement the first aspect or Steps in the method for determining channel transmission parameters described in the second aspect.

In a ninth aspect, a computer program product is provided, the computer program product is stored in a non-transitory storage medium, and the computer program product is executed by at least one processor to implement the computer program product described in the first aspect or the second aspect. Steps in the method for determining channel transmission parameters described above.

In a tenth aspect, there is provided a communication device configured to perform the steps in the method for determining channel transmission parameters as described in the first aspect or the second aspect.

In this embodiment of the present application, the terminal determines the transmission parameters of the SL discovery based on the upper layer indication information and the target information, thereby determining the transmission parameters of the PSSCH discovered by the SL and/or the transmission parameters of the PSCCH, so that the transmission parameters of the PSSCH discovered by the SL and /or the sending parameters of the PSCCH are matched with the configuration information of the terminal (including upper layer indication information and target information), thereby improving the communication performance of the channel.

Description of drawings

FIG. 1 is a structural diagram of a network system provided by an embodiment of the present application;

FIG. 2 is a flowchart of a method for determining channel transmission parameters provided in an embodiment of the present application;

FIG. 3 is another flow chart of a method for determining channel transmission parameters provided in an embodiment of the present application;

FIG. 4 is a structural diagram of an apparatus for determining channel transmission parameters provided by an embodiment of the present application;

FIG. 5 is another structural diagram of an apparatus for determining channel transmission parameters provided in an embodiment of the present application;

FIG. 6 is a structural diagram of a communication device provided by an embodiment of the present application;

FIG. 7 is a structural diagram of a terminal provided in an embodiment of the present application;

FIG. 8 is a structural diagram of a network side device provided by an embodiment of the present application.

Detailed ways

The following will clearly describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, but not all of them. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in this application belong to the protection scope of this application.

The terms "first", "second" and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific sequence or sequence. It should be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application can be practiced in sequences other than those illustrated or described herein and that "first" and "second" distinguish objects It is usually one class, and the number of objects is not limited. For example, there may be one or more first objects. In addition, "and/or" in the description and claims means at least one of the connected objects, and the character "/" generally means that the related objects are an "or" relationship. In this application, 'transmission' refers to the transmission of signals, not the sending of signals in a narrow sense.

It is worth noting that the technology described in the embodiment of this application is not limited to the Long Term Evolution (Long Term Evolution, LTE)/LTE-Advanced (LTE-Advanced, LTE-A) system, and can also be used in other wireless communication systems, such as code 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 (Single-carrier Frequency-Division Multiple Access, SC-FDMA) and other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described technology can be used for the above-mentioned system and radio technology, and can also be used for other systems and radio technologies. However, the following description describes New Radio (NR) systems for example purposes, and uses NR terminology in most of the following descriptions, although these techniques can also be applied to applications other than NR system applications, such as Gen 6 ( 6th Generation, 6G) communication system.

FIG. 1 shows a structural diagram of a wireless communication system to which this embodiment of the present application is applicable. The wireless communication system includes a terminal 11 and a network side device 12 . Wherein, the terminal 11 can also be called a terminal device or a user terminal (User Equipment, UE), and the terminal 11 can be a mobile phone, a tablet computer (Tablet Computer), a laptop computer (Laptop Computer) or a notebook computer, a personal digital assistant (Personal Digital Assistant, PDA), handheld computer, netbook, ultra-mobile personal computer (ultra-mobile personal computer, UMPC), mobile Internet device (Mobile Internet Device, MID), wearable device (Wearable Device) or vehicle-mounted device ( Vehicle User Equipment, VUE), pedestrian terminal (Pedestrian User Equipment, PUE) and other terminal-side equipment, wearable devices include: bracelets, earphones, glasses, etc. It should be noted that, the embodiment of the present application does not limit the specific type of the terminal 11 . The network side device 12 may be a base station or a core network, where a base station may be called a node B, an evolved node B, an access point, a base transceiver station (Base Transceiver Station, BTS), a radio base station, a radio transceiver, a basic service Basic Service Set (BSS), Extended Service Set (ESS), Node B, Evolved Node B (eNB), Home Node B, Home Evolved Node B, Wireless Local Area Network (WLAN) Area Network, WLAN) access point, WiFi node, Transmitting Receiving Point (Transmitting Receiving Point, TRP) or some 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 the embodiment of the present application, only the base station in the NR system is taken as an example, but the specific type of the base station is not limited.

The method for determining channel transmission parameters provided by the embodiments of the present application will be described in detail below through specific embodiments and application scenarios with reference to the accompanying drawings.

Please refer to FIG. 2. FIG. 2 is a flowchart of a method for determining channel transmission parameters provided in an embodiment of the present application. The method for determining channel transmission parameters includes:

Step 201, the terminal determines transmission parameters for SideLink (SL) discovery based on upper layer indication information and target information, and the target information is configured or pre-configured by the network side device.

The transmission parameters may include at least one item of transmission power, number of transmissions, modulation and coding scheme strategy (Modulation and Coding Scheme, MCS) index, channel occupancy ratio (Channel occupancy ratio, CR) and the like. The target information can be determined according to pre-configuration, or can be configured based on network-side devices.

Step 202, according to the transmission parameters discovered by the SL, determine the transmission parameters of the physical sidelink shared channel (Physical Sidelink Share Channel, PSSCH) discovered by the SL, and/or the physical sidelink control channel discovered by the SL (Physical Sidelink Control Channel, PSCCH) transmission parameters.

In the above method for determining channel transmission parameters, the terminal determines the transmission parameters of the SL discovery based on the upper layer indication information and the target information, thereby determining the transmission parameters of the PSSCH discovered by the SL and/or the transmission parameters of the PSCCH, which can make the transmission of the PSSCH discovered by the SL The parameters and/or the sending parameters of the PSCCH are matched with the configuration information of the terminal (including upper layer indication information and target information), thereby improving the communication performance of the channel.

In the above, the upper layer indication information includes the SL discovery distance level; wherein, the SL discovery distance level satisfies the following one:

The SL discovers that there is a corresponding relationship between the distance level and the minimum transmission distance authorized by the upper layer;

The SL discovers that there is a corresponding relationship between the distance level and the maximum transmission distance authorized by the upper layer;

The SL discovers that there is a corresponding relationship between the distance level and the transmission distance range authorized by the upper layer.

For example, the SL discovery distance level can be divided into "short (low)", "medium (medium)", and "long (long)", where "low" corresponds to the maximum transmission power of 1, and the SL discovery distance level "medium" corresponds to the maximum transmission power Power 2, SL discovery distance level "long" corresponds to maximum transmit power 3. For another example, the SL discovery distance level is divided into 1, 2, 3..., where the SL discovery distance level 1 corresponds to the maximum transmission power 1, the SL discovery distance level 2 corresponds to the maximum transmission power 2, the SL discovery distance level 3 corresponds to the maximum transmission power 3, etc. etc., and so on. Among them, the SL discovery distance level is related to the actual application and/or business, and the upper layer can define the SL discovery distance level correspondingly according to the specific application and/or service discovery distance requirements, such as the minimum transmission distance requirement for SL discovery (for example, 50m), Or, the requirement for the maximum transmission distance (for example, 100m) or the requirement for the transmission distance range (for example, 50m-100m), etc., is not limited.

The upper layer determines the SL discovery distance level according to the minimum transmission distance, maximum transmission distance or transmission distance range requirements, and the terminal determines the transmission parameters for SL discovery according to the SL discovery distance level and target information.

The target information includes at least one of the following:

SL discovers the first sending parameter configuration shared with SL communication;

Second sending parameter configuration dedicated to SL discovery.

The SL discovery may or may not share the sending parameter configuration of the SL communication, that is, the SL discovery has a separate sending parameter configuration. In the case of SL discovery sharing the sending parameter configuration of SL communication, SL discovery and SL communication share the first sending parameter configuration; in the case of SL discovery not sharing the sending parameter configuration of SL communication, there is a dedicated SL discovery configuration for SL discovery The second sending parameter configuration.

In one embodiment of the present application, when the target information includes the first transmission parameter configuration shared by SL discovery and SL communication, the first transmission parameter configuration includes channel busy ratio (Channel Busy Ratio, CBR), priority The corresponding relationship between the level and the first sending parameter. Wherein, the first sending parameter includes at least one of the following:

The first maximum number of transmissions of the PSSCH;

The first maximum MCS index of the PSSCH;

The first minimum MCS index of the PSSCH;

The first maximum subchannel (Subchannel) number of PSSCH;

The first minimum subchannel number of PSSCH;

The first maximum transmission power of PSSCH;

The first maximum transmit power of PSCCH;

CR's first cap.

In the case that SL discovery and SL communication share the first sending parameter configuration, the priority of SL discovery is fixed and may be the highest priority (that is, priority (priority) = 1).

Correspondingly, in the case where the first transmission parameter configuration includes the corresponding relationship 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 :

When the CBR or default CBR obtained by the measurement 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, Obtain the first maximum transmit power of the corresponding PSSCH in the first transmission parameter configuration, and/or the first maximum transmit power of the corresponding PSCCH in the first transmission parameter configuration;

Correspondingly, according to the transmission parameters discovered by the SL, determining 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, include:

Determine the target transmission power of the PSSCH discovered by the SL according to the first maximum transmission power of the corresponding PSSCH in the first transmission parameter configuration; and/or,

Determine the target transmit power of the PSCCH discovered by the SL according to the first maximum transmit power of the PSCCH corresponding to the first transmit parameter configuration.

In the above, the terminal matches the CBR obtained by measurement or the 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 In the first transmission parameter configuration, there is a first target CBR that matches the measured CBR or the default CBR, and the priority corresponding to the first target CBR matches the preset priority of the PSSCH, then the first target CBR corresponding to The first transmission parameter of the first transmission parameter, the first maximum transmission power of the corresponding PSSCH in 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 transmission The corresponding first maximum transmission power of the PSCCH in the parameter configuration is the first maximum transmission power of the PSCCH in the first transmission parameter corresponding to the first target CBR.

In the above, the preset priority may be a preset priority, and the preset priority may be a fixed priority. The preset priority can be set to the highest priority.

Correspondingly, in the case where the target transmit power of the PSSCH discovered by the SL is determined according to the first maximum transmit power of the corresponding PSSCH in the first transmit parameter configuration, the target transmit power of the PSSCH discovered by the SL is determined according to the first maximum transmit power of the PSSCH discovered by the SL. The first parameter, the second parameter and the third parameter are determined;

Wherein, the first parameter includes any of the following:

P _CMAX ;

A third maximum transmit power in the first target parameter;

The smaller value of _PCMAX and the third maximum transmit power in the first target parameter;

Wherein, _PCMAX represents the maximum transmission power value of the serving cell, and the first target parameter is determined according to the SL discovery distance level authorized by the upper layer of the terminal and the second transmission parameter configuration;

The second parameter includes: the first maximum transmission power of the corresponding PSSCH in the first transmission parameter configuration;

The third parameter includes any of the following:

The smaller value of PPSSCH, D and PPSSCH, SL;

A value obtained by adding the smaller value of PPSSCH, D and PPSSCH, SL to the power offset in the first target parameter;

A value obtained by multiplying the smaller value of PPSSCH, D and PPSSCH, SL by the power factor in the first target parameter;

Wherein, PPSSCH,D is the first transmit power obtained according to the downlink path loss as a reference, and PPSSCH,SL is the second transmit power obtained according to the secondary link path loss as a reference.

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.

In the above, the third maximum transmit power in the first target parameter can be determined in the following manner:

In the case where the second transmission parameter configuration includes the correspondence between the SL discovery distance level and the second transmission parameter, if the SL discovery distance level included in the upper layer indication information is consistent with the target in the second transmission parameter configuration If the SL discovery distance level is the same, acquire the second transmission parameter corresponding to the target SL discovery distance level in the second transmission parameter configuration. The first target parameter is a parameter of the PSSCH in the second transmission parameter corresponding to the target SL discovery distance level, for example, the first target parameter includes the third maximum transmission power of the PSSCH, the power offset of the PSSCH, and the power factor of the PSSCH at least one.

In an embodiment of the present application, when the target information includes a second transmission parameter configuration dedicated to SL discovery, the second transmission parameter configuration includes at least one of CBR and SL discovery distance level and the second Correspondence between transmission parameters, that is, the second transmission parameter configuration includes the correspondence between CBR and the second transmission parameter, the correspondence between the SL discovery distance level and the second transmission parameter, or, CBR, SL discovery distance Correspondence between the level and the second sending parameter. The above correspondence can be divided into the following two situations:

In one case, the second transmission parameter configuration includes the correspondence between CBR and the second transmission parameter, or the second transmission parameter configuration includes the relationship between CRB, SL discovery distance level and the second transmission parameter In the case of the corresponding relationship, the second sending parameter includes at least one of the following:

The second maximum number of transmissions of the PSSCH;

The second largest MCS index of the PSSCH;

The second minimum MCS index of PSSCH;

The second maximum number of sub-channels of PSSCH;

The second minimum subchannel number of PSSCH;

The second maximum transmission power of PSSCH;

The second maximum transmit power of PSCCH.

Second upper limit of CR.

For example, to set the correspondence between the SL discovery distance level, the CBR value (0 to 100%), and the maximum transmit power:

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

SL discovers distance class 1 and CBR range [50,100%], corresponding to maximum transmit power 2;

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

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

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

Correspondingly, in the case where 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:

The CBR or default CBR obtained by the terminal during 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 In the same case, acquire the second maximum transmission power of the corresponding PSSCH in the second transmission parameter configuration, and/or the second maximum transmission power of the corresponding PSCCH in the second transmission parameter configuration;

Determine the target transmission power of the PSSCH discovered by the SL according to the second maximum transmission power of the corresponding PSSCH in the second transmission parameter configuration; and/or,

Determine the target transmit power of the PSCCH discovered by the SL according to the second maximum transmit power of the PSCCH corresponding to the second transmit parameter configuration.

Specifically, the terminal matches the CBR obtained by measurement or the default CBR with the CBR in the second transmission parameter configuration, and uses the SL discovery distance level authorized by the upper layer of the terminal (the SL discovery distance level can be determined according to the upper layer indication information, For example, the SL discovery distance level included in the upper layer indication information) is matched 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 the default CBR , and the SL discovery distance level corresponding to the second target CBR matches the SL discovery distance level authorized by the upper layer of the terminal, then the second transmission parameter corresponding to the second target CBR is obtained, and the corresponding PSSCH in the second transmission parameter configuration The second maximum transmission power 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 target CBR The second maximum transmit power of the PSCCH in the corresponding first transmit parameter.

Correspondingly, in the case where the target transmit power of the PSSCH discovered by the SL is determined according to the second maximum transmit power of the corresponding PSSCH in the second transmit parameter configuration, the target transmit power of the PSSCH discovered by the SL is determined according to the second maximum transmit power of the PSSCH discovered by the SL. The first parameter, the second parameter and the third parameter are determined;

Wherein, the first parameter includes any of the following:

P _CMAX ;

A third maximum transmit power in the first target parameter;

The second parameter includes: the second maximum transmission power of the corresponding PSSCH in the second transmission parameter configuration;

The third parameter includes any of the following: the smaller value of PPSSCH, D, and PPSSCH, SL;

A value obtained by adding the smaller value of PPSSCH, D, and PPSSCH, SL to the power offset in the first target parameter;

A value obtained by multiplying the smaller value of PPSSCH, D, and PPSSCH, SL by the power factor in the first target parameter;

In another case, that is, when the second sending parameter configuration includes a correspondence between the SL discovery distance level and the second sending parameter, the second sending parameter includes at least one of the following:

The third maximum transmission power of PSSCH;

The third maximum transmission power of PSCCH;

Power offset of PSSCH;

Power offset of PSCCH;

Power factor of PSSCH;

Power factor of PSCCH.

In the case where the second transmission parameter configuration includes a correspondence between the SL discovery distance level and the second transmission parameter, the terminal determines the transmission parameter of the secondary link SL discovery based on the upper layer indication information and the target information, include:

In the case that 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, acquire the first target parameter of the corresponding PSSCH in the second transmission parameter configuration, and /or the second target parameter of the corresponding PSCCH in 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 One, the second target parameter includes at least one of the third maximum transmit power of the PSCCH, the power offset of the PSCCH, and the power factor of the PSCCH;

Determine the target transmission power of the PSSCH discovered by the SL according to the first target parameter of the corresponding PSSCH in the second transmission parameter configuration; and/or,

Determine the target transmission power of the PSCCH discovered by the SL according to the corresponding second target parameter of the PSCCH in the second transmission parameter configuration.

Specifically, the SL discovery distance level authorized by the upper layer of the terminal can be understood as the SL discovery distance level included in the upper layer indication information, and the SL discovery distance level included in the upper layer indication information is different from the target SL discovery distance level in the second transmission parameter configuration. In the case of the same distance level, acquire the second transmission parameter corresponding to the target SL discovery distance level in the second transmission parameter configuration.

The first target parameter of the corresponding PSSCH in the second transmission parameter configuration can be understood as the transmission parameter of the 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 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 is included.

The second target parameter of the corresponding PSCCH in 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 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 is included.

In the case where the second transmission parameter configuration includes a 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 SL The target transmission power of the discovered PSCCH is determined according to at least one of the fourth parameter and the fifth parameter, and the sixth parameter;

Wherein, the fourth parameter includes: the third maximum transmit power in the second target parameter;

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;

The sixth parameter includes any of the following:

The obtained known transmit power of the PSCCH discovered by the SL;

a value obtained by adding the known transmit power to the power offset in the second target parameter;

A value obtained by multiplying the known transmit power by the power factor in the second target parameter.

The known transmission power can be obtained according to the existing method of obtaining the PSCCH transmission power discovered by SL, for example, according to the existing PSCCH transmission power calculation formula as follows, the PSCCH transmission power discovered by SL is obtained:

In the above formula, i represents the transmission opportunity of the ith PSCCH and PSSCH.

For the meanings expressed by the parameters in the above calculation formula, reference may be made to the records in relevant documents, and details will not be repeated here.

Obtaining the first maximum transmission power of the PSCCH from the first transmission parameter configuration can be obtained in the following manner: the CBR or default CBR obtained by the terminal during measurement is the same as the CBR in the first transmission parameter configuration, and the PSSCH In the case where the preset priority of the first transmission parameter configuration is the same as the priority in the first transmission parameter configuration, the first maximum transmission power of the corresponding PSCCH in the first transmission parameter configuration is obtained, and the first maximum transmission power of the corresponding PSCCH is is the first maximum transmit power of the PSCCH acquired from the first transmit parameter configuration.

Obtaining the second maximum transmission power of the PSCCH from the second transmission parameter configuration can be obtained in the following manner: In the case where the second transmission parameter configuration includes the correspondence between CRB, SL discovery distance level and the second transmission parameter , if the CBR or default CBR obtained by the terminal during 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 (that is, the SL discovery distance level in the upper layer indication information) The same as the SL discovery distance level in the second transmission parameter configuration, obtain the second maximum transmission power of the corresponding PSCCH in the second transmission parameter configuration, and the second maximum transmission power of the corresponding PSCCH is obtained from the second maximum transmission power of the PSCCH. The second maximum transmit power of the PSCCH acquired in the transmit parameter configuration.

In the above, the target transmission power of the PSCCH discovered by the SL is any of the following:

the value of said sixth parameter;

the smaller of said fourth parameter and said sixth parameter;

the smaller of said fifth parameter and said sixth parameter;

A minimum value among the fourth parameter, the fifth parameter and the sixth parameter.

Optionally, the above method for determining channel transmission parameters further includes: according to the transmission parameters of the PSSCH discovered by the SL, and/or the transmission parameters of the PSCCH discovered by the SL, sending the message described in at least one of the following:

SL discovers relevant news;

PC5-S related news;

PC5-Message related to radio resource control (Radio Resource Control, RRC) process.

Specifically, the SL discovery-related messages include a discovery statement (Discovery Announcement) message, a discovery request (Discovery Solicitation) message, and a discovery response (Discovery Response) message.

PC5-S related messages can be understood as SL discovery and subsequent sending of upper-layer PC5-S related messages, for example, at least including messages related to the PC5-S link establishment process, for example, Direct Link Establishment Request (Direct Link Establishment Request), direct link security Mode Command (Direct Link Security Mode Command), Direct Link Security Mode Complete (Direct Link Security Mode Complete), at least one of Direct Link Security Mode Complete (Direct Link Security Mode Complete), SL discovers subsequent PC5 radio resource control ( Radio Resource Control, RRC) process-related messages, for example, at least include PC5-RRC connection (connection) establishment process-related messages, for example, secondary link UE capability request (UE Capability Enquiry Sidelink), secondary link UE capability information (UE Capability Information Sidelink), secondary link RRC reconfiguration (RRC Reconfiguration Sidelink) message, and at least one item in secondary link RRC reconfiguration complete (RRC Reconfiguration Complete Sidelink) message. After the PC5-RRC connection is established, the sending parameters discovered by the SL are no longer applied to the upper layer PC5-S process and/or PC5-RRC process.

For example, the target transmission power of the PSSCH discovered by the above SL can be determined according to the calculation expression of the transmission power of the PSSCH discovered by the existing SL;

P _PSSCH (i) = min (P _CMAX , P _{MAX, CBR} , min (P _{PSSCH, D} (i), P _{PSSCH, SL} (i)));

In the case of obtaining the first maximum transmit power of the corresponding PSSCH in the first transmission parameter configuration, or the second maximum transmit power of the corresponding PSSCH in the second transmission parameter configuration, calculate the corresponding PPSSCH according to the above expression.

In one way of determination, if the SL discovery does not share the resource pool with the SL communication, that is, the SL discovery has a second transmission parameter configuration dedicated to the SL discovery, obtain the second maximum transmission power of the PSSCH corresponding to the second transmission parameter configuration (acquire The method can be seen in the previous description), replace P _{MAX and CBR} in the above expression with the second maximum transmission power of the corresponding PSSCH in the second transmission parameter configuration, then calculate the corresponding PPSSCH according to the expression, and compare the PPSSCH and the second maximum transmission power The smaller value of the third maximum transmit power in a target parameter is used as the target transmit power of the PSSCH discovered by the SL.

In one way of determination, replace _PCMAX in the above expression with the third maximum transmission power in the first target parameter, then calculate the corresponding PPSSCH according to the expression, and send the PPSSCH as the target of the PSSCH discovered by SL power.

In one way of determination, the PPSSCH is calculated according to the above expression, and the value obtained by multiplying the power factor in the PPSSCH and the first target parameter is used as the target transmission power of the PSSCH discovered by the SL, or the PPSSCH and the first target parameter The value obtained by adding the power offsets in is used as the target transmit power of the PSSCH discovered by the SL.

In one way of determination, multiply PPSSCH, D or PPSSCH, SL or min(PPSSCH, D, PPSSCH, SL) in the above expression by the power factor in the first target parameter, and then use the value obtained according to the expression as the target transmit power of the PSSCH discovered by SL, or, adding PPSSCH,D or PPSSCH,SL or min(PPSSCH,D,PPSSCH,SL) in the above expression to the power offset in the first target parameter, Then use the value obtained according to the expression as the target transmission power of the PSSCH discovered by the SL.

The method for determining channel transmission parameters in this application can be used in a cross-radio access technology (cross-Radio Access Technology, cross-RAT) scenario, that is, a scenario in which an LTE base station controls NRSL.

Please refer to FIG. 3. FIG. 3 is a flow chart of a method for determining channel transmission parameters provided in the embodiment of the present application. As shown in FIG. 3, the method for determining channel transmission parameters provided in the embodiment of the present application includes:

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 physical secondary link shared channel discovered by the SL Send parameters of the channel control channel PSCCH.

In this embodiment, the target information is configured by the network-side device, and the terminal can determine the sending parameters of the side link (SideLink, SL) discovery based on the upper layer indication information and the target information. The transmission parameters may include at least one item of transmission power, number of transmissions, modulation and coding scheme strategy (Modulation and Coding Scheme, MCS) index, channel occupancy ratio (Channel occupancy ratio, CR) and the like.

In this embodiment, 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 physical secondary link shared channel PSSCH discovered by the SL Transmission parameters of the secondary link control channel PSCCH. The terminal can determine the transmission parameters of the SL discovery based on the upper layer indication information and the target information, thereby determining the transmission parameters of the PSSCH and/or the transmission parameters of the PSCCH discovered by the SL, so that the transmission parameters of the PSSCH and/or the transmission parameters of the PSCCH discovered by the SL It matches with the configuration information of the terminal (including pre-configuration information or configuration information configured for the terminal by the network side device), thereby improving the communication performance of the channel.

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

Second sending parameter configuration dedicated to SL discovery.

Optionally, in the case where the target information includes the first sending parameter configuration shared by SL discovery and SL communication, the first sending parameter configuration includes the correspondence between channel busy rate CBR, priority and the first sending parameter relation.

Optionally, the first sending parameter includes at least one of the following:

The first maximum number of transmissions of the PSSCH;

The first maximum modulation and coding scheme strategy MCS index of PSSCH;

The first minimum MCS index of the PSSCH;

The first maximum number of sub-channels of PSSCH;

The first minimum subchannel number of PSSCH;

The first maximum transmission power of PSSCH;

The first maximum transmit power of PSCCH;

The first upper limit of the channel occupancy rate CR.

Optionally, in the case where the target information includes a second transmission parameter configuration dedicated to SL discovery, the second transmission parameter configuration includes an interval between at least one of CBR and SL discovery distance level and the second transmission parameter corresponding relationship.

Optionally, the second sending parameter configuration includes the correspondence between CBR and the second sending parameter, or, the second sending parameter configuration includes the correspondence between CRB, SL discovery distance level and the second sending parameter In the case of a relationship, the second sending parameter includes at least one of the following:

The second maximum number of transmissions of the PSSCH;

The second largest MCS index of the PSSCH;

The second minimum MCS index of PSSCH;

The second maximum number of sub-channels of PSSCH;

The second minimum subchannel number of PSSCH;

The second maximum transmission power of PSSCH;

The second maximum transmit power of PSCCH.

Second upper limit of CR.

Optionally, in the case where the second sending parameter configuration includes a correspondence between SL discovery distance level and the second sending parameter, the second sending parameter includes at least one of the following:

The third maximum transmission power of PSSCH;

The third maximum transmission power of PSCCH;

Power offset of PSSCH;

Power offset of PSCCH;

Power factor of PSSCH;

Power factor of PSCCH.

For the related records of the above-mentioned first sending parameter configuration and the second sending parameter configuration, refer to the description in the terminal-side embodiment shown in FIG. 2 , which will not be repeated here.

It should be noted that, for the method for determining channel transmission parameters provided in the embodiments of the present application, the execution subject may be the device for determining channel transmission parameters, or a control module in the device for determining channel transmission parameters for executing the method for determining channel transmission parameters.

In the following embodiments, the method for determining channel transmission parameters performed by the device for determining channel transmission parameters is used as an example to describe the device for determining channel transmission parameters provided in the embodiments of the present application.

Please refer to FIG. 4. FIG. 4 is a structural diagram of an apparatus for determining channel transmission parameters provided in an embodiment of the present application. The first apparatus for determining channel transmission parameters 500 includes:

The first determination module 501 is configured to determine transmission parameters discovered by the secondary link SL based on upper layer indication information and target information, the target information being configured or pre-configured by the network side device;

The second determination module 502 is configured to determine the transmission parameters of the physical secondary link shared channel PSSCH discovered by the SL according to the transmission parameters discovered by the SL, and/or the physical secondary link control channel PSCCH discovered by the SL Send parameters.

Optionally, the upper layer indication information includes an SL discovery distance level;

Wherein, the SL discovery distance level satisfies the following one:

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

Second sending parameter configuration dedicated to SL discovery.

Optionally, the first sending parameter includes at least one of the following:

The first maximum number of transmissions of the PSSCH;

The first maximum modulation and coding scheme strategy MCS index of PSSCH;

The first minimum MCS index of the PSSCH;

The first maximum number of sub-channels of PSSCH;

The first minimum subchannel number of PSSCH;

The first maximum transmission power of PSSCH;

The first maximum transmit power of PSCCH;

The first upper limit of the channel occupancy rate CR.

The second maximum number of transmissions of the PSSCH;

The second largest MCS index of the PSSCH;

The second minimum MCS index of PSSCH;

The second maximum number of sub-channels of PSSCH;

The second minimum subchannel number of PSSCH;

The second maximum transmission power of PSSCH;

The second maximum transmit power of PSCCH.

Second upper limit of CR.

Optionally, in the case where the second sending parameter configuration includes a correspondence between the SL discovery distance level and the second sending parameter, the second sending parameter includes at least one of the following:

The third maximum transmission power of PSSCH;

The third maximum transmission power of PSCCH;

Power offset of PSSCH;

Power offset of PSCCH;

Power factor of PSSCH;

Power factor of PSCCH.

Optionally, the first determination module 501 is configured to obtain the CBR or default CBR obtained by measurement and the CBR in the first transmission parameter configuration, and the preset priority of the PSSCH is the same as the first transmission parameter configuration In the case of the same priority in the first transmission parameter configuration, obtain the first maximum transmission power of the corresponding PSSCH in the first transmission parameter configuration, and/or the first maximum transmission power of the corresponding PSCCH in the first transmission parameter configuration;

Correspondingly, the second determination module 502 is configured to determine the target transmit power of the PSSCH discovered by the SL according to the first maximum transmit power of the corresponding PSSCH in the first transmit parameter configuration; and/or, according to the The first maximum transmit power of the PSCCH corresponding to the first transmission parameter configuration is used to determine the target transmit power of the PSCCH discovered by the SL.

Optionally, the first determination module 501 is configured to obtain the CBR or default CBR obtained by measurement and 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 second When the SL in the transmission parameter configuration finds that the distance level is the same, obtain the second maximum transmission power of the corresponding PSSCH in the second transmission parameter configuration, and/or the second maximum transmission power of the corresponding PSCCH in the second transmission parameter configuration. Maximum transmit power;

Correspondingly, the second determination module 502 is configured to determine the target transmit power of the PSSCH discovered by the SL according to the second maximum transmit power of the corresponding PSSCH in the second transmit parameter configuration; and/or, according to the second The second maximum transmit power of the PSCCH corresponding to the second transmission parameter configuration determines the target transmit power of the PSCCH discovered by the SL.

Optionally, the first determination module 501 is configured to obtain the second transmission parameter 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 corresponding PSSCH in the configuration, and/or the second target parameter of the corresponding PSCCH in the second transmission parameter configuration, wherein the first target parameter includes the third maximum transmission power of the PSSCH, the At least one of the power offset 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;

The second determination module 502 is configured to determine the target transmission power of the PSSCH discovered by the SL according to the first target parameter of the corresponding PSSCH in the second transmission parameter configuration; and/or, according to the second transmission parameter configuration The second target parameter of the corresponding PSCCH in the SL determines the target transmission power of the PSCCH discovered by the SL.

Optionally, 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;

The first parameter includes any of the following:

P _CMAX ;

A third maximum transmit power in the first target parameter;

The third parameter includes any of the following:

The smaller value of PPSSCH, D and PPSSCH, SL;

Wherein, the first parameter includes any of the following:

P _CMAX ;

A third maximum transmit power in the first target parameter;

The third parameter includes any of the following:

The smaller value of PPSSCH, D and PPSSCH, SL;

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.

Optionally, the target transmit power of the PSCCH discovered by the SL is determined according to a sixth parameter, or, the target transmit power of the PSCCH discovered by the SL is determined according to at least one of the fourth parameter and the fifth parameter, and the sixth parameter Sure;

The sixth parameter includes any of the following:

The obtained known transmit power of the PSCCH discovered by the SL;

Optionally, the target transmit power of the PSCCH discovered by the SL is any of the following:

the value of said sixth parameter;

the smaller of said fourth parameter and said sixth parameter;

the smaller of said fifth parameter and said sixth parameter;

Optionally, the apparatus 500 for determining the first channel sending parameter further includes:

A sending module, configured to send at least one of the following messages according to the sending parameters of the PSSCH discovered by the SL and/or the sending parameters of the PSCCH discovered by the SL:

SL discovers relevant news;

PC5-S related news;

Information related to the PC5-RRC process.

The apparatus 500 for determining the first channel sending parameter in the embodiment of the present application may be a device, or may be a component, an integrated circuit, or a chip in a terminal.

The apparatus 500 for determining the first channel sending parameter in the embodiment of the present application may be an apparatus with an operating system. The operating system may be an Android (Android) operating system, an ios operating system, or other possible operating systems, which are not specifically limited in this embodiment of the present application.

The apparatus 500 for determining the first channel transmission parameter provided in the embodiment of the present application can realize each process realized by the method embodiment in FIG. 2 and achieve the same technical effect. To avoid repetition, details are not repeated here.

Please refer to FIG. 5. FIG. 5 is a structural diagram of an apparatus for determining a channel transmission parameter provided in an embodiment of the present application. The second channel transmission parameter determination apparatus 600 includes:

The sending module 601 is used for the network side device to send target information to the terminal, the target information is used for the terminal to determine the sending parameters of the physical secondary link shared channel PSSCH discovered by the secondary link SL, and/or the physical secondary link shared channel PSSCH discovered by the SL Transmission parameters of the physical secondary link control channel PSCCH.

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

Second sending parameter configuration dedicated to SL discovery.

Optionally, the first sending parameter includes at least one of the following:

The first maximum number of transmissions of the PSSCH;

The first maximum modulation and coding scheme strategy MCS index of PSSCH;

The first minimum MCS index of the PSSCH;

The first maximum number of sub-channels of PSSCH;

The first minimum subchannel number of PSSCH;

The first maximum transmission power of PSSCH;

The first maximum transmit power of PSCCH;

The first upper limit of the channel occupancy rate CR.

The second maximum number of transmissions of the PSSCH;

The second largest MCS index of the PSSCH;

The second minimum MCS index of PSSCH;

The second maximum number of sub-channels of PSSCH;

The second minimum subchannel number of PSSCH;

The second maximum transmission power of PSSCH;

The second maximum transmit power of PSCCH.

Second upper limit of CR.

The third maximum transmission power of PSSCH;

The third maximum transmission power of PSCCH;

Power offset of PSSCH;

Power offset of PSCCH;

Power factor of PSSCH;

Power factor of PSCCH.

The apparatus 600 for determining the second channel transmission parameters provided in the embodiment of the present application can implement each process implemented by the method embodiment in FIG. 3 and achieve the same technical effect. To avoid repetition, details are not repeated here.

Optionally, as shown in FIG. 6 , the embodiment of the present application further provides a communication device 70, including a processor 71, a memory 72, and programs or instructions stored in the memory 72 and operable on the processor 71, For example, when the communication device 70 is a terminal, when the program or instruction is executed by the processor 71, each process of the embodiment of the channel transmission parameter determination method shown in FIG. 2 can be realized, and the same technical effect can be achieved. When the communication device 70 is a network-side device, when the program or instruction is executed by the processor 71, each process of the embodiment of the channel transmission parameter determination method shown in FIG. 3 can be realized, and the same technical effect can be achieved.

FIG. 7 is a schematic diagram of a hardware structure of a terminal implementing an embodiment of the present application.

The terminal 1000 includes but not limited to: a radio frequency unit 1001, a network module 1002, an audio output unit 1003, an input unit 1004, a sensor 1005, a display unit 1006, a user input unit 1007, an interface unit 1008, a memory 1009, and a processor 1010, etc. .

Those skilled in the art can understand that the terminal 1000 can also include a power supply (such as a battery) for supplying power to various components, and the power supply can be logically connected to the processor 1010 through the power management system, so as to manage charging, discharging, and power consumption through the power management system. Management and other functions. The terminal structure shown in FIG. 7 does not constitute a limitation on the terminal, and the terminal may include more or fewer components than shown in the figure, or combine some components, or arrange different components, which will not be repeated here.

It should be understood that, in the embodiment of the present application, the input unit 1004 may include a graphics processor (Graphics Processing Unit, GPU) 10041 and a microphone 10042, and the graphics processor 10041 is used for the image capture device ( Such as the image data of the still picture or video obtained by the camera) for processing. The display unit 1006 may include a display panel 10061, and the display panel 10061 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 two parts, 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, switch buttons, etc.), trackballs, mice, and joysticks, which will not be repeated here.

In the embodiment of the present application, the radio frequency unit 1001 receives the downlink data from the network side equipment, and processes it to the processor 1010; in addition, sends the uplink data to the base station. Generally, 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, and the like.

The memory 1009 can be used to store software programs or instructions as well as various data. The memory 1009 may mainly include a program or instruction storage area and a data storage area, wherein the program or instruction storage area may store an operating system, at least one application program or instruction required by a function (such as a sound playback function, an image playback function, etc.) and the like. In addition, the memory 1009 may include a high-speed random access memory, and may also include a nonvolatile memory, wherein the nonvolatile memory may be a read-only memory (Read-Only Memory, ROM), a programmable read-only memory (Programmable ROM) , PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electrically erasable programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. For example at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage device.

The processor 1010 may include one or more processing units; optionally, the processor 1010 may integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface and application programs or instructions, etc., Modem processors mainly handle wireless communications, such as baseband processors. It can be understood that the foregoing modem processor may not be integrated into the processor 1010 .

Wherein, the processor 1010 is configured to determine the transmission parameters discovered by the secondary link SL based on the upper layer indication information and target information, and the target information is configured or pre-configured by the network side device;

According to the transmission parameters discovered by the SL, 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 are determined.

Wherein, the SL discovery distance level satisfies the following one:

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

Second sending parameter configuration dedicated to SL discovery.

Optionally, the first sending parameter includes at least one of the following:

The first maximum number of transmissions of the PSSCH;

The first maximum modulation and coding scheme strategy MCS index of PSSCH;

The first minimum MCS index of the PSSCH;

The first maximum number of sub-channels of PSSCH;

The first minimum subchannel number of PSSCH;

The first maximum transmission power of PSSCH;

The first maximum transmit power of PSCCH;

The first upper limit of the channel occupancy rate CR.

The second maximum number of transmissions of the PSSCH;

The second largest MCS index of the PSSCH;

The second minimum MCS index of PSSCH;

The second maximum number of sub-channels of PSSCH;

The second minimum subchannel number of PSSCH;

The second maximum transmission power of PSSCH;

The second maximum transmit power of PSCCH.

Second upper limit of CR.

The third maximum transmission power of PSSCH;

The third maximum transmission power of PSCCH;

Power offset of PSSCH;

Power offset of PSCCH;

Power factor of PSSCH;

Power factor of PSCCH.

Optionally, the processor 1010 is configured to obtain the CBR or the default CBR obtained by measurement and the CBR in the first transmission parameter configuration, and the preset priority of the PSSCH is the same as the CBR in the first transmission parameter configuration. In the case of the same priority, obtain the first maximum transmission power of the corresponding PSSCH in the first transmission parameter configuration, and/or the first maximum transmission power of the corresponding PSCCH in the first transmission parameter configuration;

According to the first maximum transmit power of the corresponding PSSCH in the first transmission parameter configuration, determine the target transmit power of the PSSCH discovered by the SL; and/or, according to the first maximum transmit power of the PSCCH in the first transmission parameter configuration The maximum transmit power determines the target transmit power of the PSCCH discovered by the SL.

Optionally, the processor 1010 is configured to obtain the CBR or default CBR obtained by measurement and 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 that of the second transmission parameter When the SL in the configuration finds the same distance level, obtain the second maximum transmission power of the corresponding PSSCH in the second transmission parameter configuration, and/or the second maximum transmission of the corresponding PSCCH in the second transmission parameter configuration power;

According to the second maximum transmit power of the corresponding PSSCH in the second transmission parameter configuration, determine the target transmission power of the PSSCH discovered by the SL; and/or, according to the second maximum transmit power of the PSCCH in the second transmission parameter configuration The maximum transmit power is used to determine the target transmit power of the PSCCH discovered by the SL.

Optionally, the processor 1010 is configured to acquire the corresponding PSSCH in the second transmission parameter configuration 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. The first target parameter, and/or the second target parameter of the corresponding PSCCH in the second transmission parameter configuration, wherein the first target parameter includes the third maximum transmission power of the PSSCH, the power offset of the PSSCH, and the PSSCH At least one of the power factors of the PSCCH, 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;

According to the first target parameter of the corresponding PSSCH in the second transmission parameter configuration, determine the target transmission power of the PSSCH discovered by the SL; and/or, according to the second target of the corresponding PSCCH in the second transmission parameter configuration parameter to determine the target transmit power of the PSCCH discovered by the SL.

The first parameter includes any of the following:

P _CMAX ;

A third maximum transmit power in the first target parameter;

The third parameter includes any of the following:

The smaller value of PPSSCH, D and PPSSCH, SL;

Among them, the first parameter includes any of the following:

P _CMAX ;

A third maximum transmit power in the first target parameter;

The third parameter includes any of the following:

The smaller value of PPSSCH, D and PPSSCH, SL;

The sixth parameter includes any of the following:

The obtained known transmit power of the PSCCH discovered by the SL;

the value of said sixth parameter;

the smaller of said fourth parameter and said sixth parameter;

the smaller of said fifth parameter and said sixth parameter;

Optionally, the radio frequency unit 1001 is configured to send at least one of the following messages according to the sending parameters of the PSSCH discovered by the SL and/or the sending parameters of the PSCCH discovered by the SL:

SL discovers relevant news;

PC5-S related news;

Information related to the PC5-RRC process.

The terminal 1000 provided in the foregoing embodiment can implement various processes implemented by the method embodiment in FIG. 2 and achieve the same technical effect. To avoid repetition, details are not described here.

Specifically, the embodiment of the present application also provides a network side device. As shown in FIG. 8 , the network device 900 includes: an antenna 91 , a radio frequency device 92 , and a baseband device 93 . The antenna 91 is connected to a radio frequency device 92 . In the uplink direction, the radio frequency 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 sent and sends it to the radio frequency device 92, and the radio frequency device 92 processes the received information and sends it out through the antenna 91.

The foregoing frequency band processing device may be located in the baseband device 93 , and the method performed by the network side device in the above embodiments may be implemented in the baseband device 93 , and the baseband device 93 includes a processor 94 and a memory 95 .

Baseband device 93 for example can comprise at least one baseband board, and this baseband board is provided with a plurality of chips, as shown in Fig. The network device operations shown in the above method embodiments.

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 (common public radio interface, CPRI).

Specifically, the network-side device in the embodiment of the present invention also includes: instructions or programs stored in the memory 95 and operable on the processor 94, and the processor 94 invokes the instructions or programs in the memory 95 to execute the modules shown in FIG. 5 To avoid duplication, the method of implementation and to achieve the same technical effect will not be repeated here.

The embodiment of the present application also provides a readable storage medium, the readable storage medium may be nonvolatile or volatile, the readable storage medium stores programs or instructions, and the programs or instructions are stored in When executed by the processor, each process of the method embodiment shown in FIG. 2 or FIG. 3 can be realized, and the same technical effect can be achieved. To avoid repetition, details are not repeated here.

Wherein, the processor is the processor in the terminal or the network side device described in the foregoing embodiments. The readable storage medium includes computer readable storage medium, such as computer read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk, etc.

The embodiment of the present application further provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run the program or instruction of the network side device to implement the above-mentioned Figure 2 or The various processes of the method embodiment in FIG. 3 can achieve the same technical effect, and will not be repeated here to avoid repetition.

It should be understood that the chip mentioned in the embodiment of the present application may also be called a system-on-chip, a system-on-chip, a system-on-a-chip, or a system-on-a-chip.

The embodiment of the present application further provides a computer program product, the computer program product is stored in a non-transitory storage medium, and the computer program product is executed by at least one processor to implement the above method in Figure 2 or Figure 3 Each process of the example, and can achieve the same technical effect, in order to avoid repetition, will not repeat them here.

It should be noted that, in this document, the term "comprising", "comprising" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements, It also includes other elements not expressly listed, or elements inherent in the process, method, article, or device. Without further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus comprising that element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved. Functions are performed, for example, the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

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

The embodiments of the present application have been described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementations. The above-mentioned specific implementations are only illustrative and not restrictive. Those of ordinary skill in the art will Under the inspiration of this application, without departing from the purpose of this application and the scope of protection of the claims, many forms can also be made, all of which belong to the protection of this application.

Claims

A method for determining channel transmission parameters, comprising:

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

The terminal determines 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 according to the transmission parameters discovered by the SL.
The method according to claim 1, wherein the upper layer indication information includes SL discovery distance level;

Wherein, the SL discovery distance level satisfies the following one:

The SL discovers that there is a corresponding relationship between the distance level and the minimum transmission distance authorized by the upper layer;

The SL discovers that there is a corresponding relationship between the distance level and the maximum transmission distance authorized by the upper layer;

The SL discovers that there is a corresponding relationship between the distance level and the transmission distance range authorized by the upper layer.
The method according to claim 1, wherein the target information includes at least one of the following:

SL discovers the first sending parameter configuration shared with SL communication;

Second sending parameter configuration dedicated to SL discovery.
The method according to claim 3, wherein, when the target information includes the first transmission parameter configuration shared by SL discovery and SL communication, the first transmission parameter configuration includes channel busy rate CBR, priority and second - Correspondence between sending parameters.
The method according to claim 4, wherein the first sending parameter includes at least one of the following:

The first maximum number of transmissions of the PSSCH;

The first maximum modulation and coding scheme strategy MCS index of PSSCH;

The first minimum MCS index of the PSSCH;

The first maximum number of sub-channels of PSSCH;

The first minimum subchannel number of PSSCH;

The first maximum transmission power of PSSCH;

The first maximum transmit power of PSCCH;

The first upper limit of the channel occupancy rate CR.
The method according to claim 3, wherein, in the case that the target information includes a second transmission parameter configuration dedicated to SL discovery, the second transmission parameter configuration includes at least one of CBR and SL discovery distance level The corresponding relationship with the second sending parameter.
The method according to claim 6, wherein the second transmission parameter configuration includes the correspondence between CBR and the second transmission parameter, or, the second transmission parameter configuration includes CRB, SL discovery distance level and the first In the case of the correspondence between two sending parameters, the second sending parameters include at least one of the following:

The second maximum number of transmissions of the PSSCH;

The second largest MCS index of the PSSCH;

The second minimum MCS index of PSSCH;

The second maximum number of sub-channels of PSSCH;

The second minimum subchannel number of PSSCH;

The second maximum transmission power of PSSCH;

The second maximum transmit power of the PSCCH;

Second upper limit of CR.
The method according to claim 6, wherein, in the case where the second sending parameter configuration includes a correspondence between SL discovery distance level and the second sending parameter, the second sending parameter includes at least one of the following item:

The third maximum transmission power of PSSCH;

The third maximum transmission power of PSCCH;

Power offset of PSSCH;

Power offset of PSCCH;

Power factor of PSSCH;

Power factor of PSCCH.
The method according to claim 5, wherein, based on the upper layer indication information and target information, the terminal determines the transmission parameters discovered by the secondary link SL, including:

When the CBR or default CBR obtained by the measurement 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, Obtain the first maximum transmit power of the corresponding PSSCH in the first transmission parameter configuration, and/or the first maximum transmit power of the corresponding PSCCH in the first transmission parameter configuration;

The terminal determines the transmission parameters of the physical secondary link shared channel PSSCH discovered by the SL according to the transmission parameters discovered by the SL, and/or the transmission parameters of the physical secondary link control channel PSCCH discovered by the SL, including:

The terminal determines the target transmission power of the PSSCH discovered by the SL according to the first maximum transmission power of the corresponding PSSCH in the first transmission parameter configuration; and/or,

Determine the target transmit power of the PSCCH discovered by the SL according to the first maximum transmit power of the PSCCH corresponding to the first transmit parameter configuration.
The method according to claim 7, wherein, based on the upper layer indication information and target information, the terminal determines the transmission parameters discovered by the secondary link SL, including:

The CBR or default CBR obtained by the terminal during 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 In the same case, acquire the second maximum transmission power of the corresponding PSSCH in the second transmission parameter configuration, and/or the second maximum transmission power of the corresponding PSCCH in the second transmission parameter configuration;

The terminal determines the transmission parameters of the physical secondary link shared channel PSSCH discovered by the SL according to the transmission parameters discovered by the SL, and/or the transmission parameters of the physical secondary link control channel PSCCH discovered by the SL, including:

The terminal determines the target transmission power of the PSSCH discovered by the SL according to the second maximum transmission power of the corresponding PSSCH in the second transmission parameter configuration; and/or,

Determine the target transmit power of the PSCCH discovered by the SL according to the second maximum transmit power of the PSCCH corresponding to the second transmit parameter configuration.
The method according to claim 8, wherein the terminal determines the transmission parameters discovered by the secondary link SL based on the upper layer indication information and target information, including:

In the case that 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, acquire the first target parameter of the corresponding PSSCH in the second transmission parameter configuration, and /or the second target parameter of the corresponding PSCCH in 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 One, the second target parameter includes at least one of the third maximum transmit power of the PSCCH, the power offset of the PSCCH, and the power factor of the PSCCH;

The terminal determines the transmission parameters of the physical secondary link shared channel PSSCH discovered by the SL according to the transmission parameters discovered by the SL, and/or the transmission parameters of the physical secondary link control channel PSCCH discovered by the SL, including:

The terminal determines the target transmission power of the PSSCH discovered by the SL according to the first target parameter of the corresponding PSSCH in the second transmission parameter configuration; and/or,

Determine the target transmission power of the PSCCH discovered by the SL according to the corresponding second target parameter of the PSCCH in the second transmission parameter configuration.
The method according to claim 9, wherein the target transmission power of the PSSCH discovered by the SL is determined according to a first parameter, a second parameter and a third parameter;

The first parameter includes any of the following:

P CMAX ;

A third maximum transmit power in the first target parameter;

The smaller value of PCMAX and the third maximum transmit power in the first target parameter;

Wherein, PCMAX represents the maximum transmission power value of the serving cell, and the first target parameter is determined according to the SL discovery distance level authorized by the upper layer of the terminal and the second transmission parameter configuration;

The second parameter includes: the first maximum transmission power of the corresponding PSSCH in the first transmission parameter configuration;

The third parameter includes any of the following:

The smaller value of P PSSCH,D and P PSSCH,SL ;

A value obtained by adding the smaller value of P PSSCH, D and P PSSCH, SL to the power offset in the first target parameter;

A value obtained by multiplying the smaller value of P PSSCH, D and P PSSCH, SL by the power factor in the first target parameter;

Wherein, P PSSCH,D is the first transmission power obtained according to the downlink path loss as a reference, and P PSSCH,SL is the second transmission power obtained according to the secondary link path loss as a reference.
The method according to claim 10, wherein the target transmission power of the PSSCH discovered by the SL is determined according to a first parameter, a second parameter and a third parameter;

Wherein, the first parameter includes any of the following:

P CMAX ;

A third maximum transmit power in the first target parameter;

The smaller value of PCMAX and the third maximum transmit power in the first target parameter;

Wherein, PCMAX represents the maximum transmission power value of the serving cell, and the first target parameter is determined according to the SL discovery distance level authorized by the upper layer of the terminal and the second transmission parameter configuration;

The second parameter includes: the second maximum transmission power of the corresponding PSSCH in the second transmission parameter configuration;

The third parameter includes any of the following:

The smaller value of P PSSCH,D and P PSSCH,SL ;

A value obtained by adding the smaller value of P PSSCH, D and P PSSCH, SL to the power offset in the first target parameter;

A value obtained by multiplying the smaller value of P PSSCH, D and P PSSCH, SL by the power factor in the first target parameter;

Wherein, P PSSCH,D is the first transmission power obtained according to the downlink path loss as a reference, and P PSSCH,SL is the second transmission power obtained according to the secondary link path loss as a reference.
The method according to claim 12 or 13, wherein the target transmission power of the PSSCH discovered by the SL is the minimum value among the first parameter, the second parameter and the third parameter.
The method according to claim 11, wherein the target transmit power of the PSCCH discovered in SL is determined according to the sixth parameter, or, the target transmit power of the PSCCH discovered in SL is determined according to the fourth parameter and the fifth parameter at least one item, and the sixth parameter is determined;

Wherein, the fourth parameter includes: the third maximum transmit power in the second target parameter;

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;

The sixth parameter includes any of the following:

The obtained known transmit power of the PSCCH discovered by the SL;

a value obtained by adding the known transmit power to the power offset in the second target parameter;

A value obtained by multiplying the known transmit power by the power factor in the second target parameter.
The method according to claim 15, wherein the target transmission power of the PSCCH discovered by the SL is any of the following:

the value of said sixth parameter;

the smaller of said fourth parameter and said sixth parameter;

the smaller of said fifth parameter and said sixth parameter;

The minimum value among the fourth parameter, the fifth parameter and the sixth parameter.
The method according to claim 1, said method further comprising:

According to the sending parameters of the PSSCH discovered by the SL, and/or the sending parameters of the PSCCH discovered by the SL, sending at least one of the following messages:

SL discovers relevant news;

PC5-S related news;

Information related to the PC5-RRC process.
A method for determining channel transmission parameters, comprising:

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 physical secondary link control channel discovered by the SL Transmission parameters of the PSCCH.
The method according to claim 18, wherein the target information includes at least one of the following:

SL discovers the first sending parameter configuration shared with SL communication;

Second sending parameter configuration dedicated to SL discovery.
The method according to claim 19, wherein, when the target information includes the first transmission parameter configuration shared by SL discovery and SL communication, the first transmission parameter configuration includes channel busy rate CBR, priority and second - Correspondence between sending parameters.
The method according to claim 20, wherein the first sending parameter comprises at least one of the following:

The first maximum number of transmissions of the PSSCH;

The first maximum modulation and coding scheme strategy MCS index of PSSCH;

The first minimum MCS index of the PSSCH;

The first maximum number of sub-channels of PSSCH;

The first minimum subchannel number of PSSCH;

The first maximum transmission power of PSSCH;

The first maximum transmit power of PSCCH;

The first upper limit of the channel occupancy rate CR.
The method according to claim 19, wherein, in the case where the target information includes a second transmission parameter configuration dedicated to SL discovery, the second transmission parameter configuration includes at least one of CBR and SL discovery distance level The corresponding relationship with the second sending parameter.
The method according to claim 22, wherein the second transmission parameter configuration includes the correspondence between CBR and the second transmission parameter, or, the second transmission parameter configuration includes CRB, SL discovery distance level and the first In the case of the correspondence between two sending parameters, the second sending parameters include at least one of the following:

The second maximum number of transmissions of the PSSCH;

The second largest MCS index of the PSSCH;

The second minimum MCS index of PSSCH;

The second maximum number of sub-channels of PSSCH;

The second minimum subchannel number of PSSCH;

The second maximum transmission power of PSSCH;

The second maximum transmit power of the PSCCH;

Second upper limit of CR.
The method according to claim 22, wherein, in the case where the second sending parameter configuration includes a correspondence between SL discovery distance level and the second sending parameter, the second sending parameter includes at least one of the following item:

The third maximum transmission power of PSSCH;

The third maximum transmission power of PSCCH;

Power offset of PSSCH;

Power offset of PSCCH;

Power factor of PSSCH;

Power factor of PSCCH.
A device for determining channel transmission parameters, comprising:

The first determination module is configured to determine transmission parameters discovered by the secondary link SL based on upper layer indication information and target information, the target information being configured or pre-configured by the network side device;

The second determination module is configured to determine the transmission parameters of the physical secondary link shared channel PSSCH discovered by the SL according to the transmission parameters discovered by the SL, and/or the transmission of the physical secondary link control channel PSCCH discovered by the SL parameter.
The apparatus according to claim 25, wherein the upper layer indication information includes an SL discovery distance level;

Wherein, the SL discovery distance level satisfies the following one:

The SL discovers that there is a corresponding relationship between the distance level and the minimum transmission distance authorized by the upper layer;

The SL discovers that there is a corresponding relationship between the distance level and the maximum transmission distance authorized by the upper layer;

The SL discovers that there is a corresponding relationship between the distance level and the transmission distance range authorized by the upper layer.
The apparatus according to claim 25, wherein the target information includes at least one of the following:

SL discovers the first sending parameter configuration shared with SL communication;

Second sending parameter configuration dedicated to SL discovery.
A device for determining channel transmission parameters, comprising:

A sending module, configured to send target information to the terminal, where 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 physical secondary link discovered by the SL Transmission parameters of the control channel PSCCH.
The apparatus according to claim 28, wherein the target information includes at least one of the following:

SL discovers the first sending parameter configuration shared with SL communication;

Second sending parameter configuration dedicated to SL discovery.
A terminal, comprising a processor, a memory, and a program or instruction stored on the memory and operable on the processor, when the program or instruction is executed by the processor, it implements the claims 1 to 17 Steps in any one of the methods for determining channel transmission parameters.
A network side device, comprising a processor, a memory, and a program or instruction stored on the memory and operable on the processor, when the program or instruction is executed by the processor, it realizes the requirements of claims 18 to 18. Steps in the method for determining channel transmission parameters described in any one of 24.
A readable storage medium, on which a program or instruction is stored, and when the program or instruction is executed by a processor, the steps of the channel transmission parameter determination method according to any one of claims 1 to 17 are implemented , or, when the program or instructions are executed by the processor, the steps of the method for determining channel transmission parameters according to any one of claims 18 to 24 are implemented.
A chip, comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to realize the channel transmission as claimed in any one of claims 1 to 17 Steps in the method for determining parameters, or implementing the steps in the method for determining channel transmission parameters according to any one of claims 18 to 24.
A computer program product, wherein the computer program product is stored in a non-transitory readable storage medium, and the computer program product is executed by at least one processor to implement the process described in any one of claims 1 to 17 or, the computer program product is executed by at least one processor to implement the steps in the method for determining channel transmission parameters according to any one of claims 18 to 24.
A communication device configured to execute the steps of the method for determining channel transmission parameters according to any one of claims 1 to 17, or configured to execute the channel transmission parameter described in any one of claims 18 to 24 Send parameters to determine the steps of the method.