CN115707008A

CN115707008A - Channel transmission parameter determining method, device and related equipment

Info

Publication number: CN115707008A
Application number: CN202110888344.0A
Authority: CN
Inventors: 郑倩; 鲍炜; 刘进华
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2021-08-03
Filing date: 2021-08-03
Publication date: 2023-02-17
Also published as: WO2023011342A1

Abstract

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

Description

Channel transmission parameter determination method, device and related equipment

Technical Field

The present application belongs to the field of communications technologies, and in particular, to a method, an apparatus, and a related device for determining channel transmission parameters.

Background

In the relay technology in the wireless communication system, one or more relay nodes are added between a base station and a terminal and are responsible for forwarding wireless signals once or many times, namely the wireless signals can reach the terminal through multi-hop. The wireless relay technology can be used for expanding cell coverage, making up cell coverage blind spots, and simultaneously improving cell capacity through spatial resource multiplexing. For indoor coverage, the Relay technology can also play a role in overcoming the penetration loss and improving the indoor coverage quality.

At present, no solution exists for how to support SL discovery distance requirements in SideLink (SL) discovery, and the sending parameters of SL discovery may not match with the configuration information of the terminal, so that the communication performance is low.

Disclosure of Invention

The embodiment of the application provides a method, a device and a related device for determining channel sending parameters, which can solve the problems that sending parameters discovered by a SL (service level) may not match configuration information of a terminal and the communication performance is low.

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

the terminal determines the sending parameters discovered by the secondary link SL based on the upper layer indication information and the target information, and the target information is configured or preconfigured by the network side equipment;

and the terminal determines the transmission parameters of the physical secondary link shared channel PSSCH found by the SL and/or the transmission parameters of the physical secondary link control channel PSCCH found by the SL according to the transmission parameters found by the SL.

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

the network side equipment sends target information to a terminal, wherein the target information is used for the terminal to determine the sending parameters of a physical secondary link shared channel PSSCH found by a secondary link SL and/or the sending parameters of a physical secondary link control channel PSCCH found by the SL.

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

a first determining module, configured to determine a sending parameter discovered by a sidelink SL based on upper layer indication information and target information, where the target information is configured or preconfigured by a network side device;

a second determining module, configured to determine, according to the sending parameter found by the SL, a sending parameter of a physical secondary link shared channel PSCCH found by the SL, and/or a sending parameter of a physical secondary link control channel PSCCH found by the SL.

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

a sending module, configured to send target information to a terminal, where the target information is used by the terminal to determine a sending parameter of a physical sidelink shared channel PSCCH found by a sidelink SL, and/or a sending parameter of a physical sidelink control channel PSCCH found by the SL.

In a fifth aspect, a terminal is provided, which includes a processor, a memory, and a program or instructions stored on the memory and executable on the processor, and when executed by the processor, the program or instructions implement the steps of the channel transmission parameter determination method according to the first aspect.

In a sixth aspect, a network-side device is provided, which includes a processor, a memory, and a program or an instruction stored in the memory and executable on the processor, and when executed by the processor, the program or the instruction implements the steps of the channel transmission parameter determining method according to the second aspect.

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

In an eighth aspect, a chip is provided, where the chip includes a processor and a communication interface, where the communication interface is coupled to the processor, and the processor is configured to run a network-side device program or instruction to implement the channel transmission parameter determining method according to the first aspect or the second aspect.

In the embodiment of the application, the terminal determines the transmission parameters of the SL discovery based on the upper layer indication information and the target information, so as to determine the transmission parameters of the PSCCH and/or the transmission parameters of the PSCCH discovered by the SL, so that the transmission parameters of the PSCCH and/or the transmission parameters of the PSCCH discovered by the SL can be matched with the configuration information (including the upper layer indication information and the target information) of the terminal, thereby improving the communication performance of the channel.

Drawings

Fig. 1 is a block diagram of a network system according to an embodiment of the present application;

fig. 2 is a flowchart of a channel transmission parameter determining method according to an embodiment of the present application;

fig. 3 is another flowchart of a channel transmission parameter determining method according to an embodiment of the present application;

fig. 4 is a block diagram of a channel transmission parameter determining apparatus according to an embodiment of the present application;

fig. 5 is another structural diagram of a channel transmission parameter determination apparatus according to an embodiment of the present application;

fig. 6 is a block diagram of a communication device provided in 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 according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be described below clearly with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments that can be derived from the embodiments given herein by a person of ordinary skill in the art are intended to be within the scope of the present disclosure.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used are interchangeable under appropriate circumstances such that embodiments of the application can be practiced in sequences other than those illustrated or described herein, and the terms "first" and "second" used herein generally do not denote any order, nor do they denote any order, for example, the first object may be one or more. In addition, "and/or" in the specification and the claims means at least one of connected objects, and a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship. In the present application, 'transmission' means transmission of a signal, and is not limited to signal transmission in a narrow sense.

It is worth pointing out that the technology described in the embodiments of the present application is not limited to Long Term evolution (Long Term evolution)LTE/LTE evolution (LTE-a) systems, and may also be used for other wireless communication systems, such as Code Division Multiple Access (CDMA), time Division Multiple Access (TDMA), frequency Division Multiple Access (FDMA), orthogonal Frequency Division Multiple Access (OFDMA), single-carrier Frequency-Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described techniques can be used for both the above-mentioned systems and radio technologies, as well as for other systems and radio technologies. However, the following description describes a New Radio (NR) system for purposes of example, and NR terminology is used in much of the description below, although the techniques may also be applied to applications other than NR system applications, such as 6 th generation (6 th generation) ^th Generation, 6G) communication system.

Fig. 1 is a block diagram showing a wireless communication system to which an 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 may also be called as a terminal Device or a User Equipment (UE), the terminal 11 may be a Mobile phone, a Tablet Computer (Tablet Computer), a Laptop Computer (Laptop Computer) or a notebook Computer, a Personal Digital Assistant (PDA), a palmtop Computer, a netbook, a super-Mobile Personal Computer (UMPC), a Mobile Internet Device (MID), a Wearable Device (Wearable Device) or a vehicle-mounted Device (VUE), a pedestrian terminal (PUE), and other terminal side devices, and the Wearable Device includes: bracelets, earphones, glasses and the like. 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 the Base Station may be referred to as a node B, an evolved node B, an access Point, a Base Transceiver Station (BTS), a radio Base Station, a radio Transceiver, a Basic Service Set (BSS), an Extended Service Set (ESS), a node B, an evolved node B (eNB), a home node B, a WLAN access Point, a WiFi node, a Transmit Receiving Point (TRP), or some other suitable terminology in the field, as long as the same technical effect is achieved, the Base Station is not limited to a specific technical vocabulary, and 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 a specific type of the Base Station is not limited.

The following describes the channel transmission parameter determining method provided in the embodiment of the present application in detail through a specific embodiment and an application scenario thereof with reference to the accompanying drawings.

Referring to fig. 2, fig. 2 is a flowchart of a channel transmission parameter determining method according to an embodiment of the present application, where the channel transmission parameter determining method includes:

step 201, the terminal determines a sending parameter discovered by a SideLink (SL) based on the upper layer indication information and the target information, wherein the target information is configured or preconfigured by the network side equipment.

The transmission parameter may include at least one of transmission power, transmission times, modulation and Coding Scheme (MCS) index, channel occupancy (CR), and the like. The target information can be determined according to the pre-configuration, and can also be configured based on the network side equipment.

Step 202, determining a sending parameter of a physical Sidelink shared Channel (PSCCH) discovered by the SL and/or a sending parameter of a Physical Sidelink Control Channel (PSCCH) discovered by the SL according to the sending parameter discovered by the SL.

In the above method for determining channel transmission parameters, the terminal determines the transmission parameters found by the SL based on the upper layer indication information and the target information, so as to determine the transmission parameters found by the SL and/or the transmission parameters found by the PSCCH, so that the transmission parameters found by the SL and/or the transmission parameters found by the PSCCH can be matched with the configuration information (including the upper layer indication information and the target information) of the terminal, thereby improving the communication performance of the channel.

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

the SL discovery distance level has a corresponding relation with the minimum sending distance authorized by an upper layer;

the SL discovery distance level has a corresponding relation with the maximum transmission distance authorized by an upper layer;

the SL finds that there is a correspondence between the range level and the upper authorized transmission range.

For example, the SL discovery distance level may be classified as "low", "medium", and "long", where "low" corresponds to a maximum transmit power of 1, SL discovery distance level "medium" corresponds to a maximum transmit power of 2, and SL discovery distance level "long" corresponds to a maximum transmit power of 3. As another example, the SL discovery distance level may be 1,2,3 8230, where SL discovery distance level 1 corresponds to a maximum transmit power of 1, SL discovery distance level 2 corresponds to a maximum transmit power of 2, SL discovery distance level 3 corresponds to a maximum transmit power of 3, and so on. The SL discovery distance level may be defined by the upper layer according to a discovery distance requirement of a specific application and/or service, for example, a minimum transmission distance requirement (e.g., 50 m) of the SL discovery, or a maximum transmission distance requirement (e.g., 100 m) or a transmission distance range requirement (e.g., 50m-100 m), which is not limited herein.

The upper layer determines the SL discovery distance grade according to the minimum transmission distance, the maximum transmission distance or the transmission distance range requirement, and the terminal determines the transmission parameters discovered by the SL according to the SL discovery distance grade and the target information.

The target information includes at least one of:

the SL discovers a first transmission parameter configuration shared with SL communication;

a second transmission parameter configuration dedicated to SL discovery.

The SL discovery may or may not share the transmission parameter configuration of the SL communication, i.e., the SL discovery has a separate transmission parameter configuration. Under the condition that the SL finds the configuration of the transmission parameters for sharing the SL communication, the SL finds the configuration of the first transmission parameters shared with the SL communication; in the event that the SL discovery does not share the transmission parameter configuration for SL communication, a second transmission parameter configuration dedicated for SL discovery is configured for SL discovery.

In an embodiment of the present application, in a case that the target information includes a first transmission parameter configuration shared by SL discovery and SL communication, the first transmission parameter configuration includes a correspondence between a CBR, a priority, and a first transmission parameter. Wherein the first transmission parameter comprises at least one of:

a first maximum number of transmissions of the PSSCH;

a first maximum MCS index of the PSSCH;

a first minimum MCS index of the PSSCH;

a first maximum Subchannel (Subchannel) number of the PSSCH;

a first minimum number of subchannels of the PSSCH;

a first maximum transmit power of the PSSCH;

a first maximum transmit power of the PSCCH;

a first upper limit of CR.

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

Correspondingly, in the case that the first transmission parameter configuration includes a corresponding relationship among the CBR, the priority, and the first transmission parameter, the determining, by the terminal, the transmission parameter found by the sidelink SL based on the upper layer indication information and the target information includes:

the terminal obtains a first maximum transmission power of a PSSCH corresponding to the first transmission parameter configuration and/or a first maximum transmission power of a PSCCH corresponding to the first transmission parameter configuration under the condition that a measured CBR or a measured default CBR is the same as the CBR in the first transmission parameter configuration and the preset priority of the PSSCH is the same as the priority in the first transmission parameter configuration;

correspondingly, the determining, according to the transmission parameter found by the SL, a transmission parameter of a physical secondary link shared channel PSCCH found by the SL and/or a transmission parameter of a physical secondary link control channel PSCCH found by the SL includes:

determining a target transmission power of the PSSCH discovered by the SL according to a first maximum transmission power of the PSSCH corresponding to the first transmission parameter configuration; and/or the presence of a gas in the atmosphere,

and determining the target transmission power of the PSCCH discovered by the SL according to the first maximum transmission power of the PSCCH corresponding to the first transmission parameter configuration.

In the foregoing, the terminal matches the CBR obtained through measurement or the default CBR with the CBR in the first transmission parameter configuration, and matches the preset priority of the PSCCH with the priority in the first transmission parameter configuration, if the first transmission parameter configuration has a first target CBR matched with the CBR obtained through measurement or the default CBR, and the priority corresponding to the first target CBR matches the preset priority of the PSCCH, obtains the first transmission parameter corresponding to the first target CBR, where the first maximum transmission power of the PSCCH in the first transmission parameter configuration is the first maximum transmission power of the PSCCH in the first transmission parameter corresponding to the first target CBR, and the first maximum transmission power of the PSCCH in the first transmission parameter configuration is the first maximum transmission power of the PSCCH in the first transmission parameter corresponding to the first target CBR.

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

Correspondingly, under the condition that the target transmission power of the PSSCH discovered by the SL is determined according to the first maximum transmission power of the PSSCH corresponding to the first transmission parameter configuration, the target transmission power of the PSSCH discovered by the SL is determined according to the first parameter, the second parameter and the third parameter;

wherein the first parameter comprises any one of:

P _CMAX ；

a third maximum transmit power in the first target parameter;

P _CMAX and a third maximum transmission power in the first target parameterA value;

wherein, P _CMAX The first target parameter is determined according to the SL discovery distance level authorized by the upper layer of the terminal and the configuration of the second transmission parameter;

the second parameter includes: a first maximum transmission power of a PSSCH corresponding to the first transmission parameter configuration;

the third parameter includes any one of:

P _PSSCH,D and P _PSSCH,SL The smaller of the two;

P _PSSCH,D and P _PSSCH,SL The smaller value of the two is added with the power offset in the first target parameter to obtain a value;

P _PSSCH,D and P _PSSCH,SL The smaller value of the two is multiplied by the power factor in the first target parameter to obtain a value;

wherein, P _PSSCH,D For a first transmission power, P, obtained with reference to the downlink path loss _PSSCH,SL A second transmit power obtained with the sidelink loss as a reference.

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.

In the above, the third maximum transmission power in the first target parameter may be determined according to the following manner:

and under the condition that the second sending parameter configuration comprises the corresponding relation between the SL discovery distance level and the second sending parameter, if the SL discovery distance level included in the upper layer indication information is the same as the target SL discovery distance level in the second sending parameter configuration, obtaining the second sending parameter corresponding to the target SL discovery distance level in the second sending parameter configuration. The first target parameter is a parameter of the psch among second transmission parameters corresponding to the target SL discovery distance level, for example, the first target parameter includes at least one of a third maximum transmission power of the psch, a power offset of the psch, and a power factor of the psch.

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

in a case where the second transmission parameter configuration includes a correspondence between a CBR and a second transmission parameter, or the second transmission parameter configuration includes a correspondence between a CRB, SL discovery distance level and a second transmission parameter, the second transmission parameter includes at least one of:

a second maximum number of transmissions of the PSSCH;

a second maximum MCS index of the PSSCH;

a second minimum MCS index of the PSSCH;

a second maximum number of subchannels of the PSSCH;

a second minimum number of subchannels of the PSSCH;

a second maximum transmit power of the PSSCH;

a second maximum transmit power of the PSCCH.

Second upper limit of CR.

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

the SL finds the range level 1 and the CBR span [0,50% ], corresponding to the maximum transmit power 1;

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

for example, the correspondence between SL discovery distance level, CBR value (0 to 100%), priority, and maximum transmission power is set:

SL finds that the distance level is 1, the CBR value range is 0,50 percent, the priority is 1, and the maximum sending power is 1;

SL finds a range of 1, cbr value [0,50% ] and a priority [2,3, 8], corresponding to a maximum transmit power of 2.

Correspondingly, in the case that the second transmission parameter configuration includes the above correspondence, the determining, by the terminal, the transmission parameter found by the sidelink SL based on the upper layer indication information and the target information includes:

the terminal acquires a second maximum transmission power of a corresponding PSSCH in the second transmission parameter configuration and/or a second maximum transmission power of a corresponding PSCCH in the second transmission parameter configuration under the condition that the measured CBR or the measured default CBR 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;

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

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

Specifically, the terminal matches the CBR obtained through measurement or the default CBR with the CBR in the second transmission parameter configuration, and matches the SL discovery distance class authorized by the upper layer of the terminal (the SL discovery distance class may be determined according to the upper layer indication information, for example, the SL discovery distance class included in the upper layer indication information) with the SL discovery distance class in the second transmission parameter configuration, if the second transmission parameter configuration has a second target CBR matched with the CBR obtained through measurement or the default CBR, and the SL discovery distance class corresponding to the second target CBR matches the SL discovery distance class authorized by the upper layer of the terminal, a second transmission parameter corresponding to the second target CBR is obtained, a second maximum transmission power of the PSSCH in the second transmission parameter configuration corresponding to the second target CBR is a second maximum transmission power of the PSSCH in the second transmission parameter corresponding to the second target CBR, and a second maximum transmission power of the PSCCH in the second transmission parameter configuration is a second maximum transmission power of the PSCCH in the second transmission parameter configuration corresponding to the second target CBR.

Correspondingly, under the condition that the target transmission power of the PSSCH discovered by the SL is determined according to the second maximum transmission power of the corresponding PSSCH in the second transmission parameter configuration, the target transmission power of the PSSCH discovered by the SL is determined according to the first parameter, the second parameter and the third parameter;

wherein the first parameter comprises any one of:

P _CMAX ；

a third maximum transmit power in the first target parameter;

P _CMAX and a third maximum transmit power in the first target parameter;

the second parameters include: a second maximum transmit power of a corresponding PSSCH in the second transmit parameter configuration;

the third parameter includes any one of: p is _PSSCH,D And P is _PSSCH,SL The smaller of the two;

P _PSSCH,D, and P _PSSCH,SL The smaller value of the two is added with the power offset in the first target parameter to obtain a value;

P _PSSCH,D, and P _PSSCH,SL The smaller value of the two is multiplied by the power factor in the first target parameter to obtain a value;

wherein, P _PSSCH,D For a first transmission power, P, obtained with reference to the downlink path loss _PSSCH,SL A second transmission power obtained with the sidelink path loss as a reference.

and under the condition that the second sending parameter configuration comprises the corresponding relation between the SL discovery distance level and the second sending parameter, if the SL discovery distance level included by the upper layer indication information is the same as the target SL discovery distance level in the second sending parameter configuration, acquiring the second sending parameter corresponding to the target SL discovery distance level in the second sending parameter configuration. The first target parameter is a parameter of the psch among second transmission parameters corresponding to the target SL discovery distance level, for example, the first target parameter includes at least one of a third maximum transmission power of the psch, a power offset of the psch, and a power factor of the psch.

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

a third maximum transmit power of the PSSCH;

a third maximum transmit power of the PSCCH;

power offset of PSSCH;

a power offset of the PSCCH;

a power factor of the PSSCH;

power factor of PSCCH.

In a case that the second transmission parameter configuration includes a correspondence between an SL discovery distance level and the second transmission parameter, the determining, by the terminal, a transmission parameter discovered by a sidelink SL based on the upper layer indication information and the target information includes:

acquiring a first target parameter of a corresponding PSSCH in the second transmission parameter configuration and/or a second target parameter of the corresponding PSCCH in the second transmission parameter configuration under the condition that a SL discovery distance level authorized by an upper layer of the terminal is the same as the SL discovery distance level in the second transmission parameter configuration, wherein the first target parameter comprises at least one of a third maximum transmission power of the PSSCH, a power offset of the PSSCH and a power factor of the PSSCH, and the second target parameter comprises at least one of the third maximum transmission power of the PSCCH, the power offset of the PSCCH and the power factor of the PSCCH;

determining a target transmission power of the PSSCH discovered by the SL according to a first target parameter of the corresponding PSSCH in the second transmission parameter configuration; and/or the presence of a gas in the atmosphere,

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

Specifically, the SL discovery distance class authorized by the upper layer of the terminal may be understood as the SL discovery distance class included in the upper layer indication information, and the second transmission parameter corresponding to the target SL discovery distance class in the second transmission parameter configuration is obtained when the SL discovery distance class included in the upper layer indication information is the same as the target SL discovery distance class in the second transmission parameter configuration.

The first target parameter of the PSSCH corresponding to the second transmit parameter configuration may be understood as a transmit parameter of the PSSCH in the second transmit parameter corresponding to the target SL discovery distance level in the second transmit parameter configuration, that is, the first target parameter includes at least one of a third maximum transmit power of the PSSCH, a power offset of the PSSCH, and a power factor of the PSSCH.

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

Determining the target transmission power of the PSCCH discovered by the SL according to a sixth parameter if the second transmission parameter configuration includes a correspondence between a SL discovery distance level and the second transmission parameter, or determining the target transmission power of the PSCCH discovered by the SL according to at least one of a fourth parameter and a fifth parameter, and the sixth parameter;

wherein the fourth parameter comprises: a third maximum transmit power in the second target parameter;

the fifth parameter includes: a first maximum transmit power of the PSCCH obtained from the first transmit parameter configuration or a second maximum transmit power of the PSCCH obtained from the second transmit parameter configuration;

the sixth parameter includes any one of:

obtaining a known transmit power of the PSCCH discovered by the SL;

adding the known transmission power and the power offset in the second target parameter to obtain a value;

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

The known transmission power may be obtained according to an existing method for obtaining the PSCCH transmission power found by the SL, for example, according to an existing PSCCH transmission power calculation formula as follows:

in the above equation, i represents the transmission opportunity of the ith PSCCH and PSCCH.

The meaning of the parameters in the above calculation formula can be referred to the description in the related literature, and is not repeated herein.

The first maximum transmission power of the PSCCH is obtained from the first transmission parameter configuration by: and the terminal acquires the first maximum transmission power of the PSCCH corresponding to the first transmission parameter configuration under the condition that the CBR or the default CBR obtained by 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, wherein the first maximum transmission power of the PSCCH is the first maximum transmission power of the PSCCH acquired from the first transmission parameter configuration.

Obtaining the second maximum transmission power of the PSCCH from the second transmission parameter configuration may be obtained as follows: under the condition that the second sending parameter configuration includes the corresponding relationship between the CRB, the SL discovery distance level and the second sending parameter, if the measured CBR or the default CBR of the terminal is the same as the CBR in the second sending parameter configuration and the SL discovery distance level authorized by the upper layer of the terminal (i.e., the SL discovery distance level in the upper layer indication information) is the same as the SL discovery distance level in the second sending parameter configuration, acquiring the second maximum sending power of the PSCCH corresponding to the second sending parameter configuration, where the second maximum sending power of the PSCCH is the second maximum sending power of the PSCCH acquired from the second sending parameter configuration.

In the foregoing, the target transmission power of the PSCCH discovered by the SL is any one of:

a value of the sixth parameter;

the smaller value of the fourth parameter and the sixth parameter;

the smaller of the fifth parameter and the sixth parameter;

a minimum value of the fourth parameter, the fifth parameter, and the sixth parameter.

Optionally, the 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, transmitting at least one of the following messages:

SL discovery related messages;

PC5-S related messages;

PC5-RRC procedure related messages.

Specifically, the SL Discovery related message includes a Discovery announcement message, a Discovery request message, and a Discovery Response message.

The PC5-S related message may be understood as a SL discovery subsequent upper layer PC5-S related message transmission, for example, at least including a PC5-S Link setup procedure related message, for example, a Direct Link Establishment Request (Direct Link Establishment Request), at least one of a Direct Link Security Mode Command (Direct Link Security Mode Command), a Direct Link Security Mode completion (Direct Link Security Mode Complete), at least one of a Direct Link Security Mode completion (Direct Link Security Mode Complete), a SL discovery subsequent PC5 Radio Resource Control (RRC) procedure related message, for example, at least including a PC5-RRC connection (reconfiguration) setup procedure related message, for example, at least one of a secondary Link UE capability Request (UE capability Request), a secondary Link UE capability information (capability reconfiguration information), a secondary Link UE capability information (RRC secondary Link capability Link) message, a secondary Link capability information (RRC secondary Link reconfiguration Link) completion message. After the establishment of the PC5-RRC connection is completed, the sending parameters discovered by the SL are not applied to the upper layer PC5-S flow and/or the PC5-RRC flow.

For example, the target transmission power of the psch discovered by the SL may be determined according to a transmission power calculation expression of the psch discovered by the existing SL;

P _PSSCH (i)＝min(P _CMAX ，P _MAX，CBR ，min(P _PSSCH，D (i)，P _PSSCH，sL (i)))；

In case of obtaining a first maximum transmission power of the corresponding PSSCH in the first transmission parameter configuration or a second maximum transmission power of the corresponding PSSCH in the second transmission parameter configuration, calculating the corresponding P according to the expression _PSSCH 。

In one determination method, 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, the second maximum transmission power of the PSSCH corresponding to the second transmission parameter configuration is obtained (see the above description for the obtaining method)) Calculating P in the above expression _MAX，CBR Replacing with a second maximum transmission power of the corresponding PSSCH in the second transmission parameter configuration, and then calculating the corresponding P according to the expression _PSSCH And combining the P _PSSCH And a third maximum transmission power in the first target parameter as a target transmission power of the psch discovered by the SL.

In a certain mode, P in the expression is calculated _CMAX Replacing with the third maximum transmission power in the first target parameter, and then calculating the corresponding P according to the expression _PSSCH And apply the P _PSSCH As the target transmit power of the PSSCH discovered by the SL.

In a certain mode, P is calculated and obtained according to the expression _PSSCH From P to P _PSSCH A value obtained by multiplying the power factor in the first target parameter as a target transmission power of the PSSCH discovered by the SL, or P _PSSCH The value obtained by adding the power offset in the first target parameter is used as the target transmission power of the PSSCH discovered by the SL.

In a certain mode, P in the above expression is used _PSSCH,D Or P _PSSCH,SL Or min (P) _PSSCH,D, P _PSSCH,SL ) Multiplying the power factor in the first target parameter and then using the value obtained according to the expression as the target transmission power of the PSSCH found by the SL, or using P in the expression _PSSCH,D Or P _PSSCH,SL Or min (P) _PSSCH,D ,P _PSSCH,SL ) Added to the power offset in the first target parameter and then the value obtained according to the expression is taken as the target transmission power of the pscch found by the SL.

The channel transmission parameter determination method can be used in cross-RAT scenarios, namely scenarios in which an LTE base station controls NR SL.

Referring to fig. 3, fig. 3 is a flowchart of a method for determining channel transmission parameters according to an embodiment of the present application, and as shown in fig. 3, the method for determining channel transmission parameters according to the embodiment of the present application includes:

step 301, the network side device sends target information to the terminal, where the target information is used for the terminal to determine a sending parameter of a physical secondary link shared channel PSCCH discovered by a secondary link SL, and/or a sending parameter of a physical secondary link control channel PSCCH discovered by the SL.

In this embodiment, the target information is configured by the network side device, and the terminal may determine the sending parameters discovered by the SideLink (SL) based on the upper layer indication information and the target information. The transmission parameter may include at least one of transmission power, transmission times, modulation and Coding Scheme (MCS) index, channel occupancy (CR), and the like.

In this embodiment, a network side device sends target information to a terminal, where the target information is used for the terminal to determine a sending parameter of a physical secondary link shared channel PSCCH discovered by a secondary link SL and/or a sending parameter of a physical secondary link control channel PSCCH discovered by the SL. The terminal may be enabled to determine the transmission parameters of the SL discovery based on the upper layer indication information and the target information, so as to determine the transmission parameters of the PSCCH and/or the transmission parameters of the PSCCH discovered by the SL, so that the transmission parameters of the PSCCH and/or the transmission parameters of the PSCCH discovered by the SL match with configuration information (including pre-configuration information or configuration information configured for the terminal by the network side device) of the terminal, thereby improving communication performance of the channel.

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

a second transmission parameter configuration dedicated to SL discovery.

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

Optionally, the first transmission parameter includes at least one of:

a first maximum number of transmissions of the PSSCH;

a first maximum modulation and coding scheme policy, MCS, index of the PSSCH;

a first minimum MCS index of the PSSCH;

a first maximum number of subchannels of the PSSCH;

a first minimum number of subchannels of the PSSCH;

a first maximum transmit power of the PSSCH;

a first maximum transmit power of the PSCCH;

a first upper limit of the channel occupancy CR.

Optionally, in a case that the target information includes a second sending parameter configuration dedicated to SL discovery, the second sending parameter configuration includes a correspondence between at least one of CBR and SL discovery distance level and a second sending parameter.

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

a second maximum number of transmissions of the PSSCH;

a second maximum MCS index of the PSSCH;

a second minimum MCS index of the PSSCH;

a second maximum number of subchannels of the PSSCH;

a second minimum number of subchannels of the PSSCH;

a second maximum transmit power of the PSSCH;

a second maximum transmit power of the PSCCH.

Second upper limit of CR.

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

a third maximum transmit power of the PSSCH;

a third maximum transmit power of the PSCCH;

power offset of PSSCH;

a power offset of the PSCCH;

a power factor of the PSSCH;

power factor of PSCCH.

The description of the first sending parameter configuration and the second sending parameter configuration may refer to the description in the terminal-side embodiment shown in fig. 2, and is not repeated herein.

It should be noted that, in the channel transmission parameter determining method provided in the embodiment of the present application, the executing subject may be a channel transmission parameter determining apparatus, or a control module in the channel transmission parameter determining apparatus for executing the channel transmission parameter determining method.

In the following embodiments, a channel transmission parameter determining apparatus is used as an example to execute a channel transmission parameter determining method, and the channel transmission parameter determining apparatus provided in the embodiments of the present application is described.

Referring to fig. 4, fig. 4 is a structural diagram of a channel transmission parameter determining apparatus according to an embodiment of the present application, and the first channel transmission parameter determining apparatus 500 includes:

a first determining module 501, configured to determine a sending parameter discovered by a sidelink SL based on upper layer indication information and target information, where the target information is configured or preconfigured by a network side device;

a second determining module 502, configured to determine, according to the sending parameter found by the SL, a sending parameter of the physical secondary link shared channel PSCCH found by the SL, and/or a sending parameter of the physical secondary link control channel PSCCH found by the SL.

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

wherein the SL discovery distance level satisfies one of:

Optionally, the target information includes at least one of:

a second transmission parameter configuration dedicated to SL discovery.

Optionally, the first transmission parameter includes at least one of:

a first maximum number of transmissions of the PSSCH;

a first maximum modulation and coding scheme policy, MCS, index of the PSSCH;

a first minimum MCS index of the PSSCH;

a first maximum number of subchannels of the PSSCH;

a first minimum number of subchannels of the PSSCH;

a first maximum transmit power of the PSSCH;

a first maximum transmit power of the PSCCH;

a first upper limit of channel occupancy CR.

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

a second maximum number of transmissions of the PSSCH;

a second maximum MCS index of the PSSCH;

a second minimum MCS index of the PSSCH;

a second maximum number of subchannels of the PSSCH;

a second minimum number of subchannels of the PSSCH;

a second maximum transmit power of the PSSCH;

second maximum transmit power of PSCCH.

Second upper limit of CR.

a third maximum transmit power of the PSSCH;

a third maximum transmit power of the PSCCH;

power offset of PSSCH;

a power offset of the PSCCH;

a power factor of the PSSCH;

power factor of PSCCH.

Optionally, the first determining module 501 is configured to, when the measured CBR or the default CBR is the same as the CBR in the first transmission parameter configuration and the preset priority of the PSCCH is the same as the priority in the first transmission parameter configuration, obtain a first maximum transmission power of the PSCCH corresponding to the first transmission parameter configuration and/or a first maximum transmission power of the PSCCH corresponding to the first transmission parameter configuration;

correspondingly, the second determining module 502 is configured to determine a target transmit power of the PSSCH discovered by the SL according to a first maximum transmit power of the PSSCH corresponding to the first transmit parameter configuration; and/or determining the target transmission power of the PSCCH discovered by the SL according to the first maximum transmission power of the PSCCH corresponding to the first transmission parameter configuration.

Optionally, the first determining module 501 is configured to, when the measured CBR or the measured default CBR is the same as the CBR in the second sending 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 sending parameter configuration, obtain a second maximum sending power of the PSCCH in the second sending parameter configuration and/or a second maximum sending power of the PSCCH in the second sending parameter configuration;

correspondingly, the second determining module 502 is configured to determine a target transmission power of the psch found by the SL according to a second maximum transmission power of the psch corresponding to the second transmission parameter configuration; and/or determining the target transmission power of the PSCCH discovered by the SL according to the second maximum transmission power of the corresponding PSCCH in the second transmission parameter configuration.

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

a second determining module 502, configured to determine a target transmission power of the psch found by the SL according to a first target parameter of the psch corresponding to the second transmission parameter configuration; and/or determining the target transmission power of the PSCCH discovered by the SL according to the second target parameter of the corresponding PSCCH in the second transmission parameter configuration.

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 comprises any one of:

P _CMAX ；

a third maximum transmit power in the first target parameter;

P _CMAX and a third maximum transmit power in the first target parameter;

the second parameter includes: a first maximum transmit power of a PSSCH corresponding in the first transmit parameter configuration;

the third parameter includes any one of:

P _PSSCH,D and P _PSSCH,SL The smaller of the two;

Optionally, the target transmission power of the psch discovered by the SL is determined according to a first parameter, a second parameter, and a third parameter;

wherein the first parameter comprises any one of:

P _CMAX ；

a third maximum transmit power in the first target parameter;

P _CMAX and a third maximum transmit power in the first target parameter;

wherein, P _CMAX The first target parameter is determined according to the SL discovery distance level authorized by the upper layer of the terminal and the configuration of a second sending parameter;

the third parameter includes any one of:

P _PSSCH,D and P _PSSCH,SL The smaller of the two;

P _PSSCH,D and P _PSSCH,SL The smaller of the two is related to the first target parameterThe power offset in the number is added to obtain a value;

Optionally, the target transmission power of the psch found by the SL is a minimum value of the first parameter, the second parameter, and the third parameter.

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

the sixth parameter includes any one of:

obtaining a known transmit power of the PSCCH discovered by the SL;

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

a value of the sixth parameter;

the smaller value of the fourth parameter and the sixth parameter;

the smaller value of the fifth parameter and the sixth parameter;

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

a sending module, configured to send, according to the sending parameter of the PSCCH discovered by the SL and/or the sending parameter of the PSCCH discovered by the SL, the message including at least one of the following:

SL discovery related messages;

PC5-S related messages;

PC5-RRC procedure related messages.

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

The first channel transmission parameter determination apparatus 500 in the embodiment of the present application may be an apparatus having an operating system. The operating system may be an Android (Android) operating system, an ios operating system, or other possible operating systems, and embodiments of the present application are not limited specifically.

The first channel transmission parameter determining apparatus 500 provided in this embodiment of the application can implement each process implemented in the method embodiment of fig. 2, and achieve the same technical effect, and is not described here again to avoid repetition.

Referring to fig. 5, fig. 5 is a structural diagram of a channel transmission parameter determining apparatus according to an embodiment of the present application, and a second channel transmission parameter determining apparatus 600 includes:

a sending module 601, configured to send target information to a terminal by a network side device, where the target information is used for the terminal to determine a sending parameter of a physical sidelink shared channel PSCCH discovered by a sidelink SL and/or a sending parameter of a physical sidelink control channel PSCCH discovered by the SL.

Optionally, the target information includes at least one of:

a second transmission parameter configuration dedicated to SL discovery.

Optionally, the first transmission parameter includes at least one of:

a first maximum number of transmissions of the PSSCH;

a first maximum modulation and coding scheme policy, MCS, index of the PSSCH;

a first minimum MCS index of the PSSCH;

a first maximum number of subchannels of the PSSCH;

a first minimum number of subchannels of the PSSCH;

a first maximum transmit power of the PSSCH;

a first maximum transmit power of the PSCCH;

a first upper limit of the channel occupancy CR.

a second maximum number of transmissions of the PSSCH;

a second maximum MCS index of the PSSCH;

a second minimum MCS index of the PSSCH;

a second maximum number of subchannels of the PSSCH;

a second minimum number of subchannels of the PSSCH;

a second maximum transmit power of the PSSCH;

second maximum transmit power of PSCCH.

Second upper limit of CR.

a third maximum transmit power of the PSSCH;

a third maximum transmit power of the PSCCH;

power offset of PSSCH;

a power offset of the PSCCH;

a power factor of the PSSCH;

power factor of PSCCH.

The second channel transmission parameter determining apparatus 600 provided in this embodiment of the present application can implement each process implemented in the method embodiment of fig. 3, and achieve the same technical effect, and is not described here again to avoid repetition.

Optionally, as shown in fig. 6, an embodiment of the present application further provides a communication device 70, which includes a processor 71, a memory 72, and a program or an instruction stored in the memory 72 and executable on the processor 71, for example, when the communication device 70 is a terminal, the program or the instruction is executed by the processor 71 to implement the processes of the embodiment of the channel transmission parameter determining method shown in fig. 2, and the same technical effect can be achieved. When the communication device 70 is a network-side device, the program or the instructions are executed by the processor 71 to implement the processes of the embodiment of the channel transmission parameter determining method shown in fig. 3, and the same technical effects can be achieved.

Fig. 7 is a schematic diagram of a hardware structure of a terminal for implementing the embodiment of the present application.

The terminal 1000 can include, but is 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.

Those skilled in the art will appreciate that terminal 1000 can also include a power supply (e.g., a battery) for powering the various components, which can be logically coupled to processor 1010 via a power management system to provide management of charging, discharging, and power consumption via the power management system. The terminal structure shown in fig. 7 does not constitute a limitation of the terminal, and the terminal may include more or less components than those shown, or combine some components, or have a different arrangement of components, and will not be described again here.

It should be understood that in the embodiment of the present application, the input Unit 1004 may include a Graphics Processing Unit (GPU) 10041 and a microphone 10042, and the Graphics Processing Unit 10041 processes image data of still pictures or videos obtained by an image capturing device (such as a camera) in a video capturing mode or an image capturing mode. 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 referred to as 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, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described in detail herein.

In this embodiment of the application, the radio frequency unit 1001 receives downlink data from a network side device and then processes the downlink data to the processor 1010; in addition, the uplink data is transmitted to the base station. In general, 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 may be used to store software programs or instructions and 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, an application program or instruction (such as a sound playing function, an image playing function, and the like) required for at least one function, and the like. Further, the Memory 1009 may include a high-speed random access Memory and may also include a nonvolatile Memory, where the nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable Programmable PROM (EPROM), an Electrically Erasable Programmable ROM (EEPROM), or a flash Memory. Such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device.

Processor 1010 may include one or more processing units; alternatively, the processor 1010 may integrate an application processor, which primarily handles operating system, user interface, and applications or instructions, etc., and a modem processor, which primarily handles wireless communications, such as a baseband processor. It will be appreciated that the modem processor described above may not be integrated into processor 1010.

The processor 1010 is configured to determine a sending parameter discovered by the sidelink SL based on upper layer indication information and target information, where the target information is configured or preconfigured by the network side device;

and 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 according to the transmission parameters discovered by the SL.

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

wherein the SL discovery distance level satisfies one of:

the SL discovery distance level has a corresponding relation with the minimum transmission distance authorized by an upper layer;

the SL discovery range level has a correspondence with the upper authorized transmission range.

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

a second transmission parameter configuration dedicated to SL discovery.

Optionally, the first transmission parameter includes at least one of:

a first maximum number of transmissions of the PSSCH;

a first maximum modulation and coding scheme policy, MCS, index of the PSSCH;

a first minimum MCS index of the PSSCH;

a first maximum number of subchannels of the PSSCH;

a first minimum number of subchannels of the PSSCH;

a first maximum transmit power of the PSSCH;

a first maximum transmit power of the PSCCH;

a first upper limit of the channel occupancy CR.

a second maximum number of transmissions of the PSSCH;

a second maximum MCS index of the PSSCH;

a second minimum MCS index of the PSSCH;

a second maximum number of subchannels of the PSSCH;

a second minimum number of subchannels of the PSSCH;

a second maximum transmit power of the PSSCH;

a second maximum transmit power of the PSCCH.

Second upper limit of CR.

a third maximum transmit power of the PSSCH;

a third maximum transmit power of the PSCCH;

power offset of PSSCH;

a power offset of the PSCCH;

a power factor of the PSSCH;

power factor of PSCCH.

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

determining a target transmission power of the PSSCH discovered by the SL according to a first maximum transmission power of the PSSCH corresponding to the first transmission parameter configuration; and/or determining the target transmission power of the PSCCH discovered by the SL according to the first maximum transmission power of the PSCCH corresponding to the first transmission parameter configuration.

Optionally, the processor 1010 is configured to, when the measured CBR or the default CBR is the same as the CBR in the second transmission parameter configuration and an SL discovery distance level authorized by an upper layer of the terminal is the same as the SL discovery distance level in the second transmission parameter configuration, obtain a second maximum transmission power of a PSCCH in the second transmission parameter configuration and/or a second maximum transmission power of a PSCCH in the second transmission parameter configuration;

determining a target transmission power of the PSSCH discovered by the SL according to a second maximum transmission power of the corresponding PSSCH in the second transmission parameter configuration; and/or determining the target transmission power of the PSCCH discovered by the SL according to the second maximum transmission power of the corresponding PSCCH in the second transmission parameter configuration.

Optionally, the processor 1010 is configured to, in a case that an SL discovery distance level of an upper layer grant is the same as the SL discovery distance level in the second transmission parameter configuration, obtain a first target parameter of a PSCCH in the second transmission parameter configuration and/or a second target parameter of a PSCCH in the second transmission parameter configuration, where the first target parameter includes at least one of a third maximum transmission power of the PSCCH, a power offset of the PSCCH, and a power factor of the PSCCH, and the second target parameter includes at least one of the third maximum transmission power of the PSCCH, the power offset of the PSCCH, and the power factor of the PSCCH;

determining a target transmission power of the PSSCH discovered by the SL according to a first target parameter of the corresponding PSSCH in the second transmission parameter configuration; and/or determining the target transmission power of the PSCCH discovered by the SL according to the second target parameter of the corresponding PSCCH in the second transmission parameter configuration.

the first parameter comprises any one of:

P _CMAX ；

a third maximum transmit power in the first target parameter;

P _CMAX and a third maximum transmit power in the first target parameter;

the third parameter comprises any one of:

P _PSSCH,D and P _PSSCH,SL The smaller of the two;

P _PSSCH,D and P _PSSCH,SL The smaller of the two and the first target parameterThe power offset of (a) is added to obtain a value;

wherein the first parameter comprises any one of:

P _CMAX ；

a third maximum transmit power in the first target parameter;

P _CMAX and a third maximum transmit power in the first target parameter;

the third parameter includes any one of:

P _PSSCH,D and P _PSSCH,SL The smaller of the two;

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

the fifth parameter includes: a first maximum transmission power of the PSCCH obtained from the first transmission parameter configuration, or a second maximum transmission power of the PSCCH obtained from the second transmission parameter configuration;

the sixth parameter includes any one of:

obtaining a known transmit power of the PSCCH discovered by the SL;

a value of the sixth parameter;

the smaller value of the fourth parameter and the sixth parameter;

the smaller value of the fifth parameter and the sixth parameter;

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

SL discovery related messages;

PC5-S related messages;

PC5-RRC procedure related messages.

The terminal 1000 provided in the foregoing embodiment can implement each process implemented in the method embodiment in fig. 2, and achieve the same technical effect, and is not described here again to avoid repetition.

Specifically, the embodiment of the application further provides a network side device. As shown in fig. 8, the network device 900 includes: antenna 91, radio frequency device 92, baseband device 93. The antenna 91 is connected to a radio frequency device 92. In the uplink direction, the rf device 92 receives information through the antenna 91, and sends the received information to the baseband device 93 for processing. In the downlink direction, the baseband device 93 processes information to be transmitted and transmits the information to the rf device 92, and the rf device 92 processes the received information and transmits the processed information through the antenna 91.

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

The baseband device 93 may include, for example, at least one baseband board, on which a plurality of chips are disposed, as shown in fig. 8, wherein one of the chips, for example, the processor 94, is connected to the memory 95 to call up the program in the memory 95 to perform the network device operation shown in the above method embodiment.

The baseband device 93 may further include a network interface 96 for exchanging information with the radio frequency device 92, for example, a Common Public Radio Interface (CPRI).

Specifically, the network side device according to the embodiment of the present invention further includes: the instructions or programs stored in the memory 95 and capable of being executed on the processor 94, and the processor 94 calls the instructions or programs in the memory 95 to execute the method executed by each module shown in fig. 5, and achieve the same technical effect, and are not described herein in detail to avoid repetition.

An embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or the instruction is executed by a processor, the program or the instruction implements each process of the method embodiment shown in fig. 2 or fig. 3, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here.

The processor is the processor in the terminal or the network side device described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and so on.

An embodiment of the present application further provides a chip, where the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to run a network-side device program or an instruction, to implement each process in the method embodiment shown in fig. 2 or fig. 3, and can achieve the same technical effect, and details are not repeated here to avoid repetition.

It should be understood that the chips mentioned in the embodiments of the present application may also be referred to as a system-on-chip, a system-on-chip or a system-on-chip.

An embodiment of the present application further provides a computer program product, where the computer program product is stored in a non-volatile memory, and the computer program product is executed by at least one processor to implement the processes of the method embodiments shown in fig. 2 or fig. 3, and can achieve the same technical effects, and in order to avoid repetition, the details are not repeated here.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one of 8230, and" comprising 8230does not exclude the presence of additional like elements in a process, method, article, or apparatus comprising the element. Further, it should be noted that the scope of the methods and apparatuses in the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions recited, e.g., the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

Through the description of the foregoing embodiments, it is clear to those skilled in the art that the method of the foregoing embodiments may be implemented by software plus a necessary general hardware platform, and certainly may also be implemented by hardware, but in many cases, the former is a better implementation. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network) to execute the methods according to the embodiments of the present application.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A method for determining channel transmission parameters, comprising:

the terminal determines the sending parameters discovered by the secondary link SL based on the upper layer indication information and the target information, wherein the target information is configured or preconfigured by the network side equipment;

and the terminal determines the transmission parameter of the PSSCH of the physical secondary link discovered by the SL and/or the transmission parameter of the PSCCH of the physical secondary link discovered by the SL according to the transmission parameter discovered by the SL.

2. The method of claim 1, wherein the upper layer indication information comprises a SL discovery distance level;

wherein the SL discovery distance level satisfies one of:

3. The method of claim 1, wherein the target information comprises at least one of:

a second transmission parameter configuration dedicated to SL discovery.

4. The method of claim 3, wherein in case the target information comprises a first sending parameter configuration shared by SL discovery and SL communication, the first sending parameter configuration comprises a correspondence between a Channel Busy Rate (CBR), a priority, and a first sending parameter.

5. The method of claim 4, wherein the first transmission parameter comprises at least one of:

a first maximum number of transmissions of the PSSCH;

a first maximum modulation and coding scheme policy, MCS, index of the PSSCH;

a first minimum MCS index of the PSSCH;

a first maximum number of subchannels of the PSSCH;

a first minimum number of subchannels of the PSSCH;

a first maximum transmit power of the PSSCH;

a first maximum transmit power of the PSCCH;

a first upper limit of the channel occupancy CR.

6. The method of claim 3, wherein in case the target information comprises a second sending parameter configuration dedicated for SL discovery, the second sending parameter configuration comprises a correspondence between at least one of a CBR and a SL discovery distance level and a second sending parameter.

7. The method of claim 6, wherein in the case that the second sending parameter configuration comprises a correspondence between a CBR and a second sending parameter, or the second sending parameter configuration comprises a correspondence between a CRB, SL discovery distance level and a second sending parameter, the second sending parameter comprises at least one of:

a second maximum number of transmissions of the PSSCH;

a second maximum MCS index of the PSSCH;

a second minimum MCS index of the PSSCH;

a second maximum number of subchannels of the PSSCH;

a second minimum number of subchannels of the PSSCH;

a second maximum transmit power of the PSSCH;

a second maximum transmit power of the PSCCH;

second upper limit of CR.

8. The method of claim 6, wherein in the case that the second transmission parameter configuration comprises a correspondence between a SL discovery distance level and the second transmission parameter, the second transmission parameter comprises at least one of:

a third maximum transmit power of the PSSCH;

a third maximum transmit power of the PSCCH;

power offset of PSSCH;

a power offset of the PSCCH;

a power factor of the PSSCH;

power factor of PSCCH.

9. The method according to claim 5, wherein the terminal determines the transmission parameters for secondary link SL discovery based on the upper layer indication information and the target information, and comprises:

the terminal determines the transmission parameter of the physical secondary link shared channel PSSCH discovered by the SL and/or the transmission parameter of the physical secondary link control channel PSCCH discovered by the SL according to the transmission parameter discovered by the SL, and the method comprises the following steps:

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

and determining the target transmission power of the PSCCH discovered by the SL according to the first maximum transmission power of the corresponding PSCCH in the first transmission parameter configuration.

10. The method according to claim 7, wherein the terminal determines the transmission parameters for secondary link SL discovery based on the upper layer indication information and the target information, and comprises:

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 the presence of a gas in the gas,

11. The method of claim 8, wherein the terminal determines the transmission parameters for SL discovery based on the upper layer indication information and the target information, and comprises:

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 the presence of a gas in the atmosphere,

12. The method of claim 9, wherein the target transmit 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 comprises any one of:

P _CMAX ；

a third maximum transmit power in the first target parameter;

P _CMAX and a third maximum transmit power in the first target parameter;

the third parameter includes any one of:

P _PSSCH,D and P _PSSCH,SL The smaller of the two;

13. The method of 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 comprises any one of:

P _CMAX ；

a third maximum transmit power in the first target parameter;

P _CMAX and a third maximum in the first target parameterThe smaller of the transmission power;

the third parameter includes any one of:

P _PSSCH,D and P _PSSCH,SL The smaller of the two;

14. The method of claim 12 or 13, wherein the target transmission power of the PSSCH discovered by the SL is the minimum of the first parameter, the second parameter, and the third parameter.

15. The method of claim 11, wherein the target transmission power of the SL-discovered PSCCH is determined according to a sixth parameter, or wherein the target transmission power of the SL-discovered PSCCH is determined according to at least one of a fourth parameter and a fifth parameter, and the sixth parameter;

the sixth parameter includes any one of:

obtaining a known transmit power of the PSCCH discovered by the SL;

a value obtained by multiplying the known transmission power by a power factor in the second target parameter.

16. The method of claim 15, wherein the target transmit power of the PSCCH found by the SL is any one of:

a value of the sixth parameter;

the smaller value among both the fourth parameter and the sixth parameter;

the smaller value of the fifth parameter and the sixth parameter;

17. The method of claim 1, further comprising:

and sending a message in at least one of the following items 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 discovery related messages;

PC5-S related messages;

PC5-RRC procedure related messages.

18. A method for determining channel transmission parameters, comprising:

19. The method of claim 18, wherein the target information comprises at least one of:

a second transmission parameter configuration dedicated to SL discovery.

20. The method of claim 19, wherein in a case that the target information comprises a first transmission parameter configuration shared by SL discovery and SL communication, the first transmission parameter configuration comprises a correspondence between a channel busy rate CBR, a priority, and a first transmission parameter.

21. The method of claim 20, wherein the first transmission parameter comprises at least one of:

a first maximum number of transmissions of the PSSCH;

a first maximum modulation and coding scheme policy, MCS, index of the PSSCH;

a first minimum MCS index of the PSSCH;

a first maximum number of subchannels of the PSSCH;

a first minimum number of subchannels of the PSSCH;

a first maximum transmit power of the PSSCH;

a first maximum transmit power of the PSCCH;

a first upper limit of the channel occupancy CR.

22. The method of claim 19, wherein in case the target information comprises a second sending parameter configuration dedicated for SL discovery, the second sending parameter configuration comprises a correspondence between at least one of CBR and SL discovery distance level and a second sending parameter.

23. The method of claim 22, wherein in the case that the second sending parameter configuration comprises a correspondence between a CBR and a second sending parameter, or the second sending parameter configuration comprises a correspondence between a CRB, a SL discovery distance level and a second sending parameter, the second sending parameter comprises at least one of:

a second maximum number of transmissions of the PSSCH;

a second maximum MCS index of the PSSCH;

a second minimum MCS index of the PSSCH;

a second maximum number of subchannels of the PSSCH;

a second minimum number of subchannels of the PSSCH;

a second maximum transmit power of the PSSCH;

a second maximum transmit power of the PSCCH;

second upper limit of CR.

24. The method of claim 22, wherein in case that the second transmission parameter configuration comprises a correspondence between a SL discovery distance level and the second transmission parameter, the second transmission parameter comprises at least one of:

a third maximum transmit power of the PSSCH;

a third maximum transmit power of the PSCCH;

power offset of PSSCH;

a power offset of the PSCCH;

a power factor of the PSSCH;

power factor of PSCCH.

25. A channel transmission parameter determination apparatus, comprising:

a second determining module, configured to determine, according to the transmission parameter found by the SL, a transmission parameter of a physical sidelink shared channel PSCCH found by the SL, and/or a transmission parameter of a physical sidelink control channel PSCCH found by the SL.

26. The apparatus of claim 25, wherein the upper layer indication information comprises a SL discovery distance level;

wherein the SL discovery distance level satisfies one of:

27. The apparatus of claim 25, wherein the target information comprises at least one of:

a second transmission parameter configuration dedicated to SL discovery.

28. A channel transmission parameter determination apparatus, comprising:

29. The apparatus of claim 28, wherein the target information comprises at least one of:

a second transmission parameter configuration dedicated to SL discovery.

30. A terminal comprising a processor, a memory and a program or instructions stored on the memory and executable on the processor, the program or instructions when executed by the processor implementing the steps of the channel transmission parameter determination method according to any one of claims 1 to 17.

31. A network side device comprising a processor, a memory and a program or instructions stored on the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the steps of the channel transmission parameter determination method according to any one of claims 18 to 24.

32. A readable storage medium, characterized in that it stores thereon a program or instructions which, when executed by a processor, implement the steps of the channel transmission parameter determination method according to any one of claims 1 to 17, or which, when executed by a processor, implement the steps of the channel transmission parameter determination method according to any one of claims 18 to 24.