WO2023202397A1

WO2023202397A1 - Information transmission method, terminal and storage medium

Info

Publication number: WO2023202397A1
Application number: PCT/CN2023/087214
Authority: WO
Inventors: 贺海港; 卢有雄; 胡宇洲; 苗婷
Original assignee: 中兴通讯股份有限公司
Priority date: 2022-04-18
Filing date: 2023-04-10
Publication date: 2023-10-26
Also published as: CN115866775A

Abstract

The present application provides an information transmission method, a terminal and a storage medium. The information transmission method comprises: sending channel occupied time (COT) sharing indication information; and receiving COT request information.

Description

Information transmission method, terminal and storage medium

Technical field

This application relates to the field of communication technology, such as information transmission methods, terminals and storage media.

Background technique

In the SideLink communication system, when there are services that need to be transmitted between user terminals (User Equipment, UE), the services between UEs do not pass through the network side, that is, they do not pass through the cellular link between the UE and the base station. Instead of forwarding, the data source UE transmits it directly to the target UE through SideLink. This mode of direct communication between UEs has characteristics that are obviously different from the traditional cellular system communication mode.

In unlicensed spectrum, only the channel with successful Listen Before Talk (LBT) can transmit. The so-called LBT means that the communication node performs the channel access process (monitoring whether the channel is idle) before transmitting information. Only when the channel is idle can the communication node transmit information. For communication nodes with successful LBT, they can occupy the channel for a certain length of time, which corresponds to Channel Occupied Time (COT). For COT sharing in cellular networks, COT sharing is performed between a base station and the UEs it serves. Since the base station supports the resource scheduling function, the base station allocates each time-frequency resource in the COT share to different UEs, so that the COT shared by one communication node will not be occupied by multiple communication nodes, resulting in resource conflicts among multiple communication nodes. question.

In SideLink communication, there is usually no central scheduling node that allocates different time-frequency resources within the COT share to different UEs. Therefore, there is a COT sharing conflict in SideLink communication in unlicensed spectrum.

Contents of the invention

This application provides an information transmission method, terminal and storage medium.

The embodiment of the present application provides an information transmission method, applied to the first terminal, including:

Send COT sharing instruction information; receive COT request information.

The embodiment of the present application also provides an information transmission method, applied to the second terminal, including:

Receive COT sharing instruction information; send COT request information; receive COT sharing confirmation information.

Embodiments of the present application also provide an information transmission method, applied to a third terminal, including:

Receive COT request information; send COT sharing confirmation information.

Embodiments of the present application also provide a user terminal, including: a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, the The above information transmission method.

Embodiments of the present application also provide a computer-readable storage medium. A computer program is stored on the computer-readable storage medium. When the computer program is executed by a processor, the above information transmission method is implemented.

Description of the drawings

Figure 1 is a flow chart of an information transmission method provided by an embodiment;

Figure 2 is a flow chart of another information transmission method provided by an embodiment;

Figure 3 is a flow chart of yet another information transmission method provided by an embodiment;

Figure 4 is a schematic diagram of an implementation of an information transmission method provided by an embodiment;

Figure 5 is a schematic diagram of an implementation of a first terminal-side information transmission method provided by an embodiment;

Figure 6 is a schematic diagram of an implementation of a second terminal side information transmission method provided by an embodiment;

Figure 7 is a schematic diagram of an implementation of another information transmission method provided by an embodiment;

Figure 8 is a schematic diagram of the implementation of another first terminal side information transmission method provided by an embodiment;

Figure 9 is a schematic diagram of another second terminal side information transmission method provided by an embodiment;

Figure 10 is a schematic diagram of an implementation of a third terminal side information transmission method provided by an embodiment;

Figure 11 is a schematic diagram of the mapping relationship between each time-frequency resource unit and the PSFCH subgroup in the COT time-frequency resource region provided by an embodiment;

Figure 12 is a schematic diagram of the implementation of a time-frequency resource unit within the COT time range provided by an embodiment;

Figure 13 is a schematic diagram of another implementation of time-frequency resource units within the COT time range provided by an embodiment;

Figure 14 is a schematic diagram of the implementation of a PSFCH subgroup provided by an embodiment;

Figure 15 is a schematic diagram of the implementation of another PSFCH subgroup provided by an embodiment;

Figure 16 is a schematic diagram of the implementation of another PSFCH subgroup provided by an embodiment;

Figure 17 is a schematic diagram of the implementation of another time-frequency resource unit within the COT time range provided by an embodiment;

Figure 18 is a schematic diagram of the implementation of yet another time-frequency resource unit within the COT time range provided by an embodiment;

Figure 19 is a schematic diagram of the implementation of another PSFCH subgroup provided by an embodiment;

Figure 20 is a schematic diagram of the implementation of another PSFCH subgroup provided by an embodiment;

Figure 21 is a schematic structural diagram of an information transmission device according to an embodiment;

Figure 22 is a schematic structural diagram of an information transmission device according to an embodiment;

Figure 23 is a schematic structural diagram of an information transmission device according to an embodiment;

Figure 24 is a schematic diagram of the hardware structure of a user terminal provided by an embodiment.

Detailed ways

The embodiments of the present application will be described below in conjunction with the accompanying drawings.

The operations illustrated in the flowcharts of the figures may be performed in a computer system, such as a set of computer-executable instructions. Also, although a logical order is shown in the flowchart diagrams, in some cases the operations shown or described may be performed in a different order than herein.

In the SideLink communication system, when there are services that need to be transmitted between user terminals (UEs), the services between UEs do not pass through the network side, that is, they do not go through the forwarding of the cellular link between the UE and the base station. It is directly transmitted from the data source UE to the target UE through SideLink. This mode of direct communication between UEs has characteristics that are obviously different from the traditional cellular system communication mode. The applications of edge link communication include Device-to-Device (D2D) communication and Vehicle to Everything (V2X) communication. Among them, the Internet of Vehicles (V2X) communication includes Vehicle to Vehicle (V2V) communication, Vehicle to Pedestrian (V2P) communication, and Vehicle to Infrastructure (V2I) communication. For short-range communication users who can apply SideLink communication, SideLink communication not only saves wireless spectrum resources, but also reduces the data transmission pressure of the core network, reduces system resource occupation, increases the spectrum efficiency of the cellular communication system, and reduces communication delays. And save network operation costs to a great extent.

The design of SideLink only considered the Intelligent Transport System (ITS) spectrum and the licensed spectrum allocated to network operators, but did not consider the design of unlicensed spectrum. In SideLink, a time slot can contain some SideLink channels. The SideLink channels in a time slot can include Physical Sidelink Control Channel (PSCCH) and Physical Sidelink Shared Channel (PSSCH). ) and the Physical Sidelink Feedback Channel (PSFCH). In addition, a time slot may also include Orthogonal frequency-division multiplexing (OFDM) symbols in which no SideLink channel is transmitted throughout the symbol.

In unlicensed spectrum, only channels with successful LBT can transmit. The so-called LBT means that communication nodes need to compete for resources. Only when the time-frequency resource competition is successful, the communication node can transmit information on the time-frequency resource. In the LBT mechanism, the communication node performs the channel access process (monitoring whether the channel is idle) before information transmission. Only when the channel is idle can the communication node transmit information. lose.

For communication nodes with successful LBT, they can occupy the channel for a certain length of time, which corresponds to COT. The time-frequency resources with a certain frequency domain width within the COT time are considered to be the resources that the communication node obtains through the LBT listening mechanism and is allowed to be used. The time-frequency resources with a certain frequency domain width in the COT can be used by the communication nodes with successful LBT themselves, or the communication nodes with successful LBT can share the COT and share the resources with other communication nodes. Other UEs with successful COT sharing can use time-frequency resources with a certain frequency domain width within the shared COT.

For the above COT sharing, in the agreement, only the COT sharing of the cellular network is supported, and the COT sharing of SideLink is not supported. In COT sharing in cellular networks, COT sharing is performed between a base station and the UEs it serves. Since the base station supports the resource scheduling function, the COT shared by one communication node will not be occupied by multiple communication nodes, causing resource conflicts among multiple communication nodes.

However, in SideLink communication in unlicensed spectrum, there is usually no central scheduling node to allocate different time-frequency resources within the COT share to different UEs. Therefore, there is a resource conflict problem of COT sharing, that is, SideLink's COT sharing is not yet supported.

This application proposes a COT sharing technology solution to solve the situation where COT sharing is not supported in SideLink communication. In particular, this application can solve the resource conflict problem in SideLink COT sharing.

In order to solve the above technical problems, Figure 1 is a flow chart of an information transmission method provided by an embodiment. As shown in Figure 1, the method provided by this embodiment can be applied to the first terminal, including 110 and 120.

In 110, COT sharing indication information is sent.

In 120, COT request information is received.

In this embodiment, the COT sharing indication information can be understood as information used to indicate COT sharing resources. COT request information may also be called COT sharing request information, and COT request information may be understood as information used to request COT shared resources. The first terminal sends COT sharing indication information to the second terminal. After receiving the COT sharing indication information, the second terminal sends COT request information to the first terminal, and the first terminal receives the COT request information.

In this embodiment, the first terminal can notify the terminal receiving the COT sharing indication information (such as the second terminal) by sending the COT sharing indication information, which resources the first terminal has shared; the first terminal can also know the sending of the COT request information by receiving the COT request information. COT resources requested by the terminal (such as the second terminal) requesting information. This solves the problem that COT sharing is not supported in SideLink communication.

In one embodiment, the resource index corresponding to the channel sending the COT request information satisfies one or more of the following:

The resource index corresponding to the channel where the COT request information is sent and where the COT sharing indication information is sent. There is a mapping relationship between the time-frequency resources of There is a mapping relationship between subsets of the shared time-frequency resource set.

In this embodiment, the time-frequency resource in which the COT sharing indication information is sent can be understood as the time-frequency resource used by the first terminal to send the COT sharing indication information, or the time-frequency resource used by the first terminal to send the COT sharing indication information belongs to the sending COT shares a subset of time-frequency resources where the indication information is located. The resource index corresponding to the channel that sends the COT request information and the time-frequency resource where the COT sharing indication information is sent can be mapped according to certain rules to form a mapping relationship; here, the resource index corresponding to the channel that sends the COT request information and the time-frequency resource that sends the COT are not The mapping between time-frequency resources where the shared indication information is located is limited.

The set of time-frequency resources shared within the COT time range can be understood as the set of time-frequency resources shared within the COT time range determined by the second terminal based on the received COT sharing indication information. Here, how to determine the set of time-frequency resources within the COT time range is explained. The set of shared time-frequency resources is not limited. The first terminal or the third terminal may determine the first physical side link channel according to the mapping relationship between each time-frequency resource unit in the shared time-frequency resource set within the COT time range and the first physical side link channel. The time-frequency resource unit requested by the COT sharing request information.

The resource index corresponding to the channel that sends the COT request information and the time-frequency resource set shared within the COT time range can be mapped according to certain rules, or the resource index corresponding to the channel that sends the COT request information and the shared time-frequency resource set within the COT time range. Subsets in the time-frequency resource set can also be mapped according to certain rules. Similarly, there is no mapping between the resource index corresponding to the channel that sends the COT request information and the shared time-frequency resource set within the COT time range, nor the mapping between the resource index corresponding to the channel that sends the COT request information and the COT time. The mapping between subsets of the shared time-frequency resource set within the scope is limited.

In one embodiment, the COT request information is transmitted through the first physical side link channel.

In this embodiment, the first physical side link channel can be understood as a channel used to transmit COT request information, and the first physical side link channel is not limited here. The COT request information is transmitted through the first physical side link channel, which can also be understood as the COT request information is requested through the first physical side link channel.

In an embodiment, the first physical side link channel satisfies one or more of the following:

The first physical side link channel is the PSFCH channel; the first physical side link channel occupies several resource elements in 2 OFDM symbols in one time slot, where the first physical side link channel on the first OFDM symbol The mapped resource elements are obtained by copying the resource elements mapped by the first physical side link channel on the second OFDM symbol.

In an embodiment, there is a mapping relationship between the first physical side link channel and the time-frequency resource where the COT sharing indication information is sent.

In this embodiment, there is a mapping relationship between the first physical side link channel used to transmit COT sharing request information and the time-frequency resource where COT sharing indication information is sent. Different terminals use the first physical side link channel to send COT sharing request information. The resource indexes of the link channels are different, so that the first terminal can identify which terminal has sent the COT sharing request information according to the mapping relationship.

In one embodiment, there is a mapping relationship between the first physical side link channel and the set of time-frequency resources shared within the COT time range; or, the first physical side link channel and the set of time-frequency resources shared within the COT time range. There is a mapping relationship between subsets in .

In this embodiment, the set of time-frequency resources shared within the COT time range can be understood as each resource in the set of time-frequency resources within the COT time range is a time-frequency resource to be requested, and the time-frequency resources shared within the COT time range The subset in the set can be understood as the time-frequency resources within the COT time range. Each resource in the subset is the time-frequency resource to be requested. According to the mapping relationship between the first physical side link channel and the shared time-frequency resource set within the COT time range (or a subset of the shared time-frequency resource set within the COT time range), the first terminal may determine to send The COT shares the time-frequency resources requested by the terminal (such as the second terminal) requesting the information.

In one embodiment, the shared time-frequency resource set within the COT time range includes multiple time-frequency resource units, and each time-frequency resource unit is mapped to the first physical side link channel in a setting manner.

In this embodiment, the setting method can be understood as a preset mapping method, which is not limited here. For example, the setting method for mapping each time-frequency resource unit to the corresponding first physical side link channel can be based on the first physical side link channel. A set formula is determined.

In one embodiment, the setting method for mapping each time-frequency resource unit to the corresponding first physical side link channel is determined based on the first setting formula; used to determine at least one of the corresponding first physical side link channels. The first setting formula of the resource number includes the time slot number corresponding to the resource corresponding to the determined resource number and the number of the frequency domain resource.

In this embodiment, the first setting formula can be understood as a preset formula for determining at least one resource number of the first physical side link channel corresponding to each time-frequency resource unit. The first setting formula may include the time slot number corresponding to the resource corresponding to the determined resource number and the number of the frequency domain resource.

In one embodiment, the method further includes:

Determine the resource number of the first physical side link channel mapped by at least one time-frequency resource unit within a group of physical side link channels; used to determine a first physical side link channel mapped by at least one time-frequency resource unit The second setting formula of the resource number within a group of physical side link channels includes: the source identifier of the first terminal and the identification number of the second terminal.

In this embodiment, a group of physical side link channels includes at least one physical side link channel, including a first physical side link channel. The second setting formula can be understood as a preset formula used to determine the resource number of a first physical side link channel mapped by at least one time-frequency resource unit within a group of physical side link channels.

A first physical side link channel mapped by at least one time-frequency resource unit can be determined according to certain rules between the resource number in a group of physical side link channels and the source identification (Identity, ID) of the first terminal. For mapping, a first physical side link channel mapped by at least one time-frequency resource unit can also be mapped according to certain rules between the resource number in a group of physical side link channels and the identification number of the second terminal; in On this basis, the second setting formula for determining the resource number of a first physical side link channel mapped by at least one time-frequency resource unit within a group of physical side link channels may include the source identifier of the first terminal. and the identification number of the second terminal.

In one embodiment, the method further includes:

Send COT sharing confirmation information.

In this embodiment, the COT sharing confirmation information can be understood as information used to confirm the COT shared time-frequency resources. The COT sharing confirmation information can be used to notify the terminal (such as the second terminal) that sends the COT sharing request information, and the first terminal can send it The requested COT shared time-frequency resource is shared for use by the terminal that sends the COT sharing request information. This embodiment can avoid resource conflicts caused by multiple terminals requesting the same time-frequency resource by sending COT sharing confirmation information to one of multiple terminals that sends COT sharing request information when a resource conflict occurs.

In an embodiment, the COT sharing confirmation information is transmitted through the second physical side link channel.

In this embodiment, the second physical side link channel can be understood as a channel sent to the second terminal for transmitting COT sharing confirmation information, and the second physical side link channel is not limited here. The transmission of the COT sharing acknowledgment information through the second physical side link channel can also be understood as the first terminal sending the COT sharing acknowledgment information through the second physical side link channel.

In an embodiment, the second physical side link channel satisfies one or more of the following:

The second physical side link channel is the PSFCH channel; the second physical side link channel occupies several resource elements in 2 OFDM symbols in one time slot, where the first physical side link channel on the first OFDM symbol The mapped resource elements are obtained by copying the resource elements mapped by the first physical side link channel on the second OFDM symbol.

In an embodiment, there is a mapping relationship between the second physical side link channel and the time-frequency resource where the COT sharing indication information is sent.

In one embodiment, there is a mapping relationship between the second physical side link channel and the time-frequency resource set shared within the COT time range; or, the second physical side link channel and the time-frequency resource set shared within the COT time range have a mapping relationship. There is a mapping relationship between subsets in the frequency resource collection.

In one embodiment, the shared time-frequency resource set within the COT time range includes multiple time-frequency resource units, and each time-frequency resource unit is mapped to the second physical side link channel in a setting manner.

In this embodiment, the setting method in which each time-frequency resource unit is mapped to the corresponding second physical side link channel can also be determined based on the first setting formula. The first setting formula may include the time slot number corresponding to the resource corresponding to the determined resource number and the number of the frequency domain resource.

In one embodiment, the method further includes:

Determine the resource number of the second physical side link channel mapped by at least one time-frequency resource unit within a group of physical side link channels; used to determine a second physical side link channel mapped by at least one time-frequency resource unit The third setting formula of the resource number within a group of physical side link channels includes: the source identifier of the first terminal and the identification number of the second terminal.

In this embodiment, the third setting formula can be understood as a preset formula used to determine the resource number of a second physical side link channel mapped by at least one time-frequency resource unit within a group of physical side link channels. formula.

A second physical side link channel mapped by at least one time-frequency resource unit can be mapped according to certain rules between the resource number in a group of physical side link channels and the source identifier of the first terminal. At least one time-frequency resource unit A second physical side link channel mapped by the unit can also be mapped according to certain rules between the resource number in a group of physical side link channels and the identification number of the second terminal; on this basis, it is used to determine at least The third setting formula for the resource number of a second physical side link channel mapped by a time-frequency resource unit within a group of physical side link channels may include the source identifier of the first terminal and the identification number of the second terminal.

In one embodiment, the COT sharing confirmation information is included in Sidelink Control Information (SCI).

In this embodiment, the inclusion of the COT sharing confirmation information in the SCI can be understood as the first terminal sending the SCI, and the SCI contains the COT sharing confirmation information; it can also be understood as the first terminal sending the COT sharing confirmation information through the SCI.

In one embodiment, the COT sharing confirmation information includes a terminal identification number of at least one terminal, and the terminal identification number is used to confirm the COT sharing confirmation information.

In this embodiment, the COT sharing confirmation information may include the terminal identification number of at least one terminal. When sending the COT sharing confirmation information, the COT sharing confirmation information may be sent to the terminal corresponding to the terminal identification number so that the corresponding terminal can share based on COT. Confirm the information for COT sharing and confirm whether the information is the confirmation transmitted to yourself.

Figure 2 is a flow chart of another information transmission method provided by an embodiment. As shown in Figure 2, the method provided by this embodiment can be applied to the second terminal, including 210, 220 and 230.

In 210, COT sharing indication information is received.

In 220, COT request information is sent.

In 230, COT sharing confirmation information is received.

In this embodiment, after the second terminal receives the COT sharing indication information sent by the first terminal, the second terminal sends COT request information to the first terminal or the third terminal; after the first terminal or the third terminal receives the COT request information, The COT sharing confirmation information is sent, and the second terminal receives the COT sharing confirmation information.

In this embodiment, the second terminal can know which time-frequency resources are shared by the first terminal by receiving the COT sharing indication information; and then notify the terminal that receives the COT request information (such as the first terminal or the third terminal) by sending the COT request information. What are the time-frequency resources to be requested? Finally, by receiving the COT sharing confirmation information, it can be determined that the requested time-frequency resources can be used at this time. This can solve the problem that COT sharing is not supported in SideLink communication, and can also solve the resource conflict problem caused by multiple terminals simultaneously requesting the same time-frequency resource in COT sharing through COT sharing confirmation information.

In one embodiment, the method further includes:

According to the COT sharing indication information, the time-frequency resource set shared within the COT time range is determined. The time-frequency resource set includes multiple time-frequency resource units, and each time-frequency resource unit is mapped to the first physical side link channel in a setting manner. .

In an embodiment, the setting method for mapping each time-frequency resource unit to the corresponding first physical side link channel is determined based on the first setting formula; at least one parameter used to determine the corresponding first physical side link channel The first setting formula for a resource number includes a time slot number corresponding to the resource corresponding to the determined resource number and a frequency domain resource number.

In one embodiment, it also includes:

In an embodiment, the COT sharing confirmation information is transmitted through the second physical side link channel or through the third physical side link channel of the third terminal.

In this embodiment, the third physical side link channel can be understood as a channel sent by the third terminal for transmission of COT sharing confirmation information.

In an embodiment, the third physical side link channel satisfies one or more of the following:

The third physical side link channel is the PSFCH channel; the third physical side link channel occupies several resource elements in 2 OFDM symbols in one time slot, where the first physical side link channel on the first OFDM symbol The mapped resource elements are obtained by copying the resource elements mapped by the first physical side link channel on the second OFDM symbol.

In one embodiment, there is a mapping relationship between the second physical side link channel and the set of time-frequency resources shared within the COT time range; or, the second physical side link channel and the set of time-frequency resources shared within the COT time range. There is a mapping relationship between subsets in .

In an embodiment, the setting method for mapping each time-frequency resource unit to the corresponding second physical side link channel is determined based on the first setting formula; used to determine at least one of the corresponding second physical side link channels. The first setting formula of the resource number includes the time slot number corresponding to the resource corresponding to the determined resource number and the number of the frequency domain resource.

In an embodiment, the method further includes: determining the resource number of the second physical side link channel mapped by at least one time-frequency resource unit within a group of physical side link channels; determining at least one time-frequency resource The second setting formula for the resource number of a second physical side link channel mapped by the unit within a group of physical side link channels includes: the source identifier of the first terminal and the identification number of the second terminal.

In one embodiment, the COT sharing confirmation information is included in the SCI.

Figure 3 is a flow chart of another information transmission method provided by an embodiment. As shown in Figure 3, the method provided by this embodiment can be applied to a third terminal, including 310 and 320.

In 310, COT request information is received.

In 320, COT sharing confirmation information is sent.

In this embodiment, after the second terminal receives the COT sharing indication information sent by the first terminal, it sends COT request information; after the third terminal receives the COT request information sent by the second terminal, the third terminal sends COT sharing confirmation information. The terminal receives the COT sharing confirmation information.

In this embodiment, the third terminal can know the time-frequency resources requested by the second terminal by receiving the COT request information; the third terminal also notifies the terminal (such as the second terminal) that receives the COT sharing confirmation information by sending the COT sharing confirmation information. , the second terminal can use the requested time-frequency resource corresponding to the COT request information. This solves the problem that COT sharing is not supported in SideLink communication, and also solves the resource conflict problem caused by multiple terminals simultaneously requesting the same time-frequency resource in COT sharing through COT sharing confirmation information.

In an embodiment, there is a mapping relationship between the first physical side link channel and the resource for sending COT sharing indication information.

In one embodiment, the method further includes:

The information transmission method for realizing COT sharing is exemplified below through different embodiments.

Figure 4 is a schematic diagram of an implementation of an information transmission method provided by an embodiment. As shown in Figure 4, the first terminal sends COT sharing indication information. The second terminal receives the COT sharing indication information of the first terminal. The second terminal sends COT sharing request information (ie, COT request information). After receiving the COT sharing request information from the second terminal, the first terminal sends COT sharing confirmation information to the second terminal.

FIG. 5 is a schematic diagram of an implementation of a first terminal-side information transmission method provided by an embodiment. As shown in Figure 5, information transmission is processed from the perspective of the first terminal, and the first terminal sends COT sharing indication information. The COT sharing indication information may include the length of time of the shared COT, the start time of the shared COT, etc. Notify the COT that the time slot (slot) where the sharing indication information is located is marked as slot m; the first terminal notifies The starting time of the shared COT may be determined by the first terminal notifying the time interval of the starting time of the shared COT relative to slot m. Optionally, the COT sharing indication information is included in the SCI, and the first terminal notifies the COT of the sharing indication information by sending the SCI. In addition to the above information, the first terminal can also indicate frequency domain resource information. The purpose of the indication of frequency domain resource information is to allow the UE that receives the COT sharing indication information to determine whether the COT shared by the first terminal is within the time range of the COT shared by the first terminal. What frequency domain resources are available. Or, the first terminal does not indicate frequency domain resource information. The UE that receives the COT sharing indication information determines which frequency domain resources within the COT time range are shared by the first terminal based on a fixed assumption. For example, other receiving UEs assume that The frequency domain resource shared by the first terminal is an LBT subband, and the LBT subband is the LBT subband where the control channel corresponding to the COT sharing indication information sent by the first terminal is located.

The first terminal receives the COT sharing request information. The COT sharing request information here may also be called COT request information. The first terminal can determine which terminal is requesting time-frequency resources in the COT through the received COT sharing request information. In addition, the first terminal can also know the time-frequency resources requested by the UE that sends the COT sharing request information. The first terminal determines a shared time-frequency resource set and notifies the COT sharing indication information corresponding to the shared time-frequency resource set. A shared time-frequency resource set determined by the first terminal may be marked as a first time-frequency resource set. The requested time-frequency resource set determined by the first terminal through the received COT sharing request information may be marked as the second time-frequency resource set. The second time-frequency resource set is equal to the first time-frequency resource set, or the second time-frequency resource set belongs to a subset of the first time-frequency resource set.

The first terminal sends COT sharing confirmation information. The COT shared confirmation information here can also be called COT confirmation information. The first terminal receives COT sharing request information from at least one terminal, where the at least one terminal includes the second terminal. The first terminal can confirm which terminals to send COT sharing confirmation information according to the received COT sharing request information from at least one terminal. The COT sharing confirmation information can be used to notify the UE that sends the COT request information of the COT shared resources requested, and the first terminal can share the resources with the UE. Among them, there may be two (or more) UEs that share request information through COT and request the same time-frequency resource, or the time-frequency resources requested by these two (or more) UEs partially overlap. In this case, the resource conflict between these UEs can be resolved by the first terminal sending COT sharing confirmation information. The first terminal may send COT sharing confirmation information to only one of the two (or more) UEs in which resource conflicts occur, or may not send COT sharing confirmation information to any of the UEs. A UE that has not received the COT sharing confirmation information will not use the time-frequency resources it requested.

FIG. 6 is a schematic diagram of an implementation of a second terminal-side information transmission method according to an embodiment. As shown in Figure 6, information transmission is processed from the perspective of the second terminal, and the second terminal receives the COT sharing indication information sent by the first terminal. The COT sharing indication information may include the length of time of the shared COT, the start time of the shared COT, etc. In addition, frequency domain resource information may also be included. The indication of the frequency domain resource information is intended so that the second terminal can determine which frequency domain resources are shared by the first terminal within the COT time range shared by the first terminal. Or, the second terminal determines the second terminal based on a fixed assumption. Which frequency domain resources within the COT time range are shared by a terminal. For example, the second terminal assumes that the frequency domain resource shared by the first terminal is an LBT subband, and the LBT subband is the control corresponding to the COT sharing indication information sent by the first terminal. The LBT subband where the channel is located.

The second terminal sends COT sharing request information. The COT sharing request information here may also be called COT request information. The first terminal determines a shared time-frequency resource set and notifies the COT sharing indication information corresponding to the shared time-frequency resource set. A shared time-frequency resource set determined by the first terminal may be marked as a first time-frequency resource set. The set of time-frequency resources requested by the COT sharing request information sent by the second terminal may be marked as the second set of time-frequency resources. The second time-frequency resource set is equal to the first time-frequency resource set, or the second time-frequency resource set belongs to a subset of the first time-frequency resource set.

The second terminal receives the COT sharing confirmation information. The COT shared confirmation information here can also be called COT confirmation information. After receiving the COT sharing confirmation information, the second terminal determines whether the COT sharing confirmation information is sent to itself. If the COT sharing confirmation information is sent to itself, the second terminal can use the time-frequency resources corresponding to its COT sharing request information, that is, the second terminal can use the time-frequency resources corresponding to the second time-frequency resource set to perform The transmission of a communication signal or channel.

After receiving the COT sharing indication information, the second terminal can request COT shared resources in two ways:

Method 1: The second terminal determines the set of time-frequency resources shared by the first terminal by receiving the COT sharing indication information notified by the first terminal. The second terminal selects a time-frequency resource from the time-frequency resource set shared by the first terminal. This or these time-frequency resources are the first physical side chain with the PSFCH used for COT request (that is, the channel used to transmit COT sharing request information). (the first physical side link channel may be the PSFCH channel) is mapped according to certain rules. Therefore, after the second terminal sends the PSFCH for the COT request, the first terminal can know the time-frequency resource sent by the second terminal. In addition, the first terminal can also recognize the identification number of the second terminal. After receiving the COT sharing request information sent by multiple terminals, the first terminal identifies whether the resources requested by these terminals conflict, finds the UE whose requested resources do not conflict, and sends COT sharing confirmation information to these terminals (including the second terminal) .

Method 2: The second terminal determines the set of time-frequency resources shared by the first terminal by receiving the COT sharing indication information notified by the first terminal. The second terminal requests all these time-frequency resource sets from the first terminal by sending COT sharing request information to the first terminal. The first terminal only needs to identify which terminals request COT resources from it. The resources used by the first terminal to send the COT sharing indication information and the PSFCH used for the COT sharing request information are mapped according to certain rules (that is, the PSFCH channel that transmits the COT sharing request information and the time when the COT sharing indication information is sent are located. There is a mapping relationship between frequency resources). Therefore, different UEs send COT sharing request information using different PSFCH resources. Therefore, the first terminal can identify which UEs have requested COT resources, and send COT sharing confirmation information to these UEs. The UE that receives the COT sharing confirmation information uses the COT resources it requested.

After receiving the COT sharing request information, the first terminal can identify which UE has requested which resources. The first terminal sends COT sharing confirmation information. There are two ways to send COT shared confirmation information through PSFCH (that is, COT shared confirmation information is transmitted through the second physical side link channel, and the second physical side link channel can be the PSFCH channel):

Method 1: Determine the time-frequency resource set shared by the first terminal according to the COT sharing indication information notified by the first terminal. Each time-frequency resource in the set is mapped to the PSFCH used for COT sharing confirmation according to certain rules. Therefore, the second terminal can know the COT shared resources confirmed by the first terminal. In addition, the formula of the PSFCH resource mapping rule used for COT sharing confirmation may also include the identification number of the second terminal. Therefore, the second terminal can know whether the COT sharing confirmation information is sent to itself by receiving the PSFCH. If the resource of the COT shared confirmation information belongs to the second terminal, the second terminal can use the COT shared resource.

Method 2: The resource number corresponding to the COT sharing confirmation information sent by the first terminal is mapped with the identification number of the terminal according to certain rules. Therefore, the COT sharing confirmation information carried by different resource numbers is the COT sharing confirmation information sent to different UEs. By receiving the PSFCH, the second terminal can determine the resources used by the COT sharing confirmation information, and thus can determine whether the COT sharing confirmation information is sent to itself. If it is sent to itself, the second terminal uses all resources in the time-frequency resource set determined by the COT sharing indication information. Otherwise, the second terminal does not use the time-frequency resource determined by the COT sharing indication information.

FIG. 7 is a schematic diagram of another information transmission method provided by an embodiment. As shown in Figure 7, the first terminal sends COT sharing indication information. The second terminal receives the COT sharing indication information of the first terminal. The second terminal sends COT sharing request information. After receiving the COT sharing request information sent by the second terminal, the third terminal sends COT sharing confirmation information to the second terminal.

FIG. 8 is a schematic diagram illustrating the implementation of another first terminal-side information transmission method according to an embodiment. Information transmission is processed from the perspective of the first terminal, and the first terminal sends COT sharing indication information. The COT sharing indication information may include the length of time of the shared COT, the start time of the shared COT, etc. The slot where the COT sharing indication information is notified may be marked as slot m. The first terminal may notify the start time of the shared COT by the interval time relative to slot m of the first terminal notifying the start time of the shared COT. Optionally, the COT sharing indication information is included in the SCI, and the first terminal notifies the COT of the sharing indication information by sending the SCI. In addition to the above information, the first terminal can also indicate frequency domain resource information. The purpose of the indication of frequency domain resource information is to allow the UE that receives the COT sharing indication information to determine whether the COT shared by the first terminal is within the time range of the COT shared by the first terminal. What frequency domain resources are available. Or, the first terminal does not indicate frequency domain resource information. The UE that receives the COT sharing indication information determines which frequency domain resources within the COT time range are shared by the first terminal based on a fixed assumption. For example, other receiving UEs assume that first terminal The shared frequency domain resource is an LBT subband, and the LBT subband is the LBT subband where the control channel corresponding to the COT sharing indication information sent by the first terminal is located. The COT sharing indication information sent by the first terminal can be received by different UEs, for example, can be received by the second terminal and the third terminal at the same time.

FIG. 9 is a schematic diagram of an implementation of another second terminal-side information transmission method according to an embodiment. As shown in Figure 9, information transmission is processed from the perspective of the second terminal, and the second terminal receives the COT sharing indication information sent by the first terminal. The COT sharing indication information may include the length of time of the shared COT, the start time of the shared COT, etc. In addition, frequency domain resource information may also be included. The indication of the frequency domain resource information is intended so that the second terminal can determine which frequency domain resources are shared by the first terminal within the COT time range shared by the first terminal. Or, the second terminal determines which frequency domain resources within the COT time range are shared by the first terminal based on a fixed assumption. For example, the second terminal assumes that the frequency domain resource shared by the first terminal is an LBT subband, and the LBT The subband is the LBT subband where the control channel corresponding to the COT sharing indication information sent by the first terminal is located.

The second terminal sends COT sharing request information. The COT sharing request information here may also be called COT request information. Through the COT sharing indication information, the second terminal can determine a shared time-frequency resource set (ie, a shared time-frequency resource set within the COT time range), which can be marked as the first time-frequency resource set. The set of time-frequency resources requested by the COT sharing request information sent by the second terminal may be marked as the second set of time-frequency resources. The second time-frequency resource set is equal to the first time-frequency resource set, or the second time-frequency resource set belongs to a subset of the first time-frequency resource set. The second terminal sends COT sharing request information, which can be received by multiple UEs, for example, can be received by the first terminal and the third terminal.

Figure 10 is a schematic diagram of an implementation of a third terminal side information transmission method provided by an embodiment. As shown in Figure 10, the third terminal receives the COT sharing request information sent by the second terminal. The COT sharing request information here may also be called COT request information. The third terminal can determine which terminal is requesting the time-frequency resources in the COT through the received COT sharing request information. In addition, the third terminal can also know the time-frequency resources requested by the UE that sends the COT sharing request information. By receiving the COT sharing indication information from the first terminal, the third terminal can determine a shared time-frequency resource set, which can be marked as the first time-frequency resource set. The requested time-frequency resource set determined by the third terminal through the received COT sharing request information may be marked as the second time-frequency resource set. The second time-frequency resource set is equal to the first time-frequency resource set, or the second time-frequency resource set belongs to a subset of the first time-frequency resource set.

The third terminal sends COT sharing confirmation information. The COT shared confirmation information here can also be called COT confirmation information. The third terminal receives COT sharing request information from at least one terminal, where the terminals include the second terminal. The third terminal can confirm which terminals to send COT sharing confirmation information according to the COT sharing request information received from at least one terminal. The COT sharing confirmation information can be used to notify the UE that sends the COT request information of the COT shared resources requested, and the third terminal can share the resources with the UE. Among them, there may be two (or more) UEs sharing request information through COT, requesting The same time-frequency resource is requested, or the time-frequency resources requested by these two (or more) UEs partially overlap. In this case, the resource conflict between these UEs can be resolved by the third terminal sending COT sharing confirmation information. The third terminal may send COT sharing confirmation information to only one of the two (or more) UEs where resource conflicts occur, or may not send COT sharing confirmation information to any of the UEs. A UE that has not received the COT sharing confirmation information will not use the time-frequency resources it requested.

In Figure 4, the first terminal sends COT sharing indication information. The second terminal receives the COT sharing indication information of the first terminal. The second terminal sends COT sharing request information. After receiving the COT sharing request information, the first terminal sends COT sharing confirmation information to the second terminal.

In an embodiment, the second terminal may indicate the COT sharing request information by sending the PSFCH (that is, transmitting the COT sharing request information through the PSFCH channel). The PSFCH used to indicate COT sharing request information may be marked as the first PSFCH. The time-frequency resource location of the first PSFCH (or the PSFCH subgroup where the first PFSCH is located) is the same as the requested time-frequency resource (i.e., the set of time-frequency resources shared within the COT time range or the time-frequency resources shared within the COT time range subsets in the set), mapping is performed according to certain rules (that is, there is a mapping relationship between the first physical side link channel and the shared time-frequency resource set within the COT time range, or, the first physical side link There is a mapping relationship between the channel and a subset of the shared time-frequency resource set within the COT time range, where the first physical side link channel may be a PSFCH channel that transmits COT sharing request information). Based on the mapping rule, the second terminal indicates the time-frequency resource requested by it in an implicit manner, that is, indicates the COT sharing request information in an implicit manner. The first terminal determines the time-frequency resource position of each time-frequency resource unit and the first PSFCH (or the PSFCH subgroup where the first PFSCH is located) in the COT time-frequency resource area (i.e., the shared time-frequency resource set within the COT time range). The mapping relationship determines the time-frequency resources requested by the second terminal. The second terminal may send multiple first PSFCHs to request more time-frequency resources.

Figure 11 is a schematic diagram of the mapping relationship between each time-frequency resource unit and the PSFCH subgroup in the COT time-frequency resource region according to an embodiment. As shown in Figure 11, each time-frequency resource unit is mapped to the first physical side link channel (i.e., the first PFSCH) according to the setting method. In the COT time-frequency resource area, each time-frequency resource unit and the first PFSCH are located In the mapping relationship of the PSFCH subgroup, the COT time-frequency resource area includes 4 time-frequency resource units (ie, t _1,1 , t _1,2 , t _2,1 and t _2,2 ). Each time-frequency resource unit has The frequency domain is a sub-channel, and the time domain of each time-frequency resource unit is a slot. Each time-frequency resource unit in the COT time-frequency resource area is mapped to a PSFCH subgroup.

In an embodiment, the second terminal instructs the COT to share the request information by sending the PSFCH. The resource number of the first PSFCH and the identification number of the second terminal can be mapped according to certain rules. That is to say, the formula for determining the resource number of the first PSFCH at least includes the identification number of the second terminal. In addition, the formula for determining the resource number of the first PSFCH may include, in addition to the identification number of the second terminal, The second setting formula includes the source ID of the first terminal, that is, the resource number used to determine a first physical side link channel mapped by at least one time-frequency resource unit within a group of physical side link channels. The source identification number of one terminal and the identification number of the second terminal. The identification number of the second terminal here may be, for example, a member number within a group of UEs. Based on the mapping rule, the second terminal indicates the identification number of the second terminal in an implicit manner. After the second terminal sends the first PSFCH, the first terminal receives the first PSFCH according to the first PSFCH corresponding to each PSFCH resource number. When the first terminal receives the first PSFCH corresponding to a certain PSFCH resource number, the first terminal can infer the identification number of the terminal corresponding to the PSFCH resource number according to the mapping rules, so as to identify whether it is sent by the second terminal. The first PSFCH used to indicate COT sharing request information. The PSFCH resource number here may include numbers in one dimension or multiple dimensions in the time domain, frequency domain, and code domain. The code domain here corresponds to the code division situation, for example, different code domains correspond to the indices of different cyclic shift pairs of the sequence.

In one embodiment, the first terminal instructs the COT sharing confirmation information by sending the PSFCH (ie, transmits the COT sharing confirmation information through the PSFCH channel). The PSFCH used to indicate COT sharing confirmation information can be marked as the second PSFCH. The time-frequency resource position of the second PSFCH (or the PSFCH subgroup where the second PFSCH is located) and the time-frequency resource of the indicated confirmation are mapped according to certain rules (that is, the PSFCH channel transmitting the COT shared confirmation information and the COT time There is a mapping relationship between the shared time-frequency resource sets within the scope). Based on the mapping rule, the first terminal indicates the time-frequency resource confirmed by it in an implicit manner, that is, instructs the COT to share the confirmation information in an implicit manner. The second terminal determines the time-frequency resources confirmed by the first terminal according to the mapping relationship between each time-frequency resource unit in the COT time-frequency resource area and the time-frequency resource position of the second PSFCH (or the PSFCH subgroup where the second PFSCH is located). . The first terminal may send multiple second PSFCHs to indicate more confirmed time-frequency resources. In one embodiment, the mapping relationship between each time-frequency resource unit in the COT time-frequency resource area and the PSFCH subgroup where the second PFSCH is located can also be shown in Figure 11. The COT time-frequency resource area includes 4 time-frequency resource units. The frequency domain of each time-frequency resource unit is a sub-channel, and the time domain of each time-frequency resource unit is a slot. Each time-frequency resource unit in the COT time-frequency resource area is mapped to a PSFCH subgroup.

In an embodiment, the first terminal instructs the COT to share the confirmation information by sending a PSFCH. The resource number of the second PSFCH and the identification number of the second terminal can be mapped according to certain rules. That is to say, the formula for determining the resource number of the second PSFCH at least includes the identification number of the second terminal. In addition, the formula for determining the resource number of the second PSFCH may include, in addition to the identification number of the second terminal, the source ID of the first terminal. The identification number of the second terminal here may be, for example, a member number within a group of UEs. Based on the mapping rule, the first terminal may indicate the identification number of the second terminal in an implicit manner. After the first terminal sends the second PSFCH, the second terminal receives the second PSFCH. When the PSFCH resource number corresponding to the second PSFCH received by the second terminal has a mapping relationship with the identification number of the second terminal, the second terminal can recognize that the COT sharing confirmation information is sent to the second terminal. The PSFCH resource number here can include one dimension or multiple dimensions in the time domain, frequency domain, and code domain. dimension number. The code domain here corresponds to the code division situation, for example, different code domains correspond to the indices of different cyclic shift pairs of the sequence.

In an embodiment, the second terminal may instruct the COT to share the request information by sending the PSFCH. The PSFCH used to indicate COT sharing request information may be marked as the first PSFCH. The time-frequency resource location of the first PSFCH (or the PSFCH subgroup where the first PFSCH is located) and the requested time-frequency resource are mapped according to certain rules. Based on the mapping rule, the second terminal indicates the time-frequency resource requested by it in an implicit manner, that is, indicates the COT sharing request information in an implicit manner. The first terminal determines the time-frequency resources requested by the second terminal according to the mapping relationship between each time-frequency resource unit in the COT time-frequency resource area and the time-frequency resource position of the first PSFCH (or the PSFCH subgroup where the first PFSCH is located). . The second terminal may send multiple first PSFCHs to request more time-frequency resources.

In one embodiment, the mapping relationship between each time-frequency resource unit in the COT time-frequency resource area and the PSFCH subgroup where the first PFSCH is located is as shown in Figure 11. The COT time-frequency resource area includes 4 time-frequency resource units, each The frequency domain of a time-frequency resource unit is one sub-channel, and the time domain of each time-frequency resource unit is one slot. Each time-frequency resource unit in the COT time-frequency resource area is mapped to a PSFCH subgroup.

In an embodiment, the second terminal instructs the COT to share the request information by sending the PSFCH. The resource number of the first PSFCH and the identification number of the second terminal can be mapped according to certain rules. That is to say, the formula for determining the resource number of the first PSFCH at least includes the identification number of the second terminal. In addition, the formula for determining the resource number of the first PSFCH may include, in addition to the identification number of the second terminal, the source ID of the first terminal. The identification number of the second terminal here may be, for example, a member number within a group of UEs. Based on the mapping rule, the second terminal indicates the identification number of the second terminal in an implicit manner. After the second terminal sends the first PSFCH, the first terminal receives the first PSFCH according to the first PSFCH corresponding to each PSFCH resource number. When the first terminal receives the first PSFCH corresponding to a certain PSFCH resource number, the first terminal can infer the identification number of the terminal corresponding to the PSFCH resource number according to the mapping rules, so as to identify whether it is sent by the second terminal. The first PSFCH used to indicate COT sharing request information. The PSFCH resource number here may include numbers in one dimension or multiple dimensions in the time domain, frequency domain, and code domain. The code domain here corresponds to the code division situation, for example, different code domains correspond to the indices of different cyclic shift pairs of the sequence.

In an embodiment, the first terminal instructs the COT to share the confirmation information by sending the SCI. The first terminal sends SCI, which includes COT sharing confirmation information. The COT sharing confirmation information included in the SCI includes: the identification of at least one other terminal. By receiving the COT sharing request information, the first terminal learns which terminals The client sent COT sharing request information. That is to say, by receiving the COT sharing request information, the first terminal obtains the identification number of at least one terminal corresponding to the sending COT sharing request information. The first terminal selects the identification numbers of all or part of the terminals among the identification numbers of these terminals, and sends the identification numbers of these terminals to these terminals. The identification numbers of these terminals are contained in the SCI sent by the first terminal. Taking the first terminal receiving COT sharing request information sent by the second terminal as an example, how the first terminal obtains the identification numbers of other terminals sending sharing request information is described. The second terminal indicates COT sharing request information by sending the first PSFCH. The resource number of the first PSFCH is mapped to the identification number of the second terminal and the source ID of the first terminal according to certain rules. That is to say, the formula for determining the resource number of the first PSFCH includes at least the source ID of the first terminal and the identification number of the second terminal. Based on the mapping rule, the second terminal indicates the identification number of the second terminal in an implicit manner. Therefore, the first terminal can identify whether it is the second terminal that sends the first PSFCH indicating the COT sharing request information.

In Figure 7, the first terminal sends COT sharing indication information. The second terminal receives the COT sharing indication information of the first terminal. The second terminal sends COT sharing request information. After receiving the COT sharing request information sent by the second terminal, the third terminal sends COT sharing confirmation information to the second terminal.

In an embodiment, the second terminal may instruct the COT to share the request information by sending the PSFCH. The PSFCH used to indicate COT sharing request information may be marked as the first PSFCH. The time-frequency resource location of the first PSFCH (or the PSFCH subgroup where the first PFSCH is located) and the requested time-frequency resource are mapped according to certain rules. Based on the mapping rule, the second terminal indicates the time-frequency resource requested by it in an implicit manner, that is, indicates the COT sharing request information in an implicit manner. The third terminal determines the time-frequency resources requested by the second terminal according to the mapping relationship between each time-frequency resource unit in the COT time-frequency resource area and the time-frequency resource position of the first PSFCH (or the PSFCH subgroup where the first PFSCH is located). . The second terminal may send multiple first PSFCHs to request more time-frequency resources.

In one embodiment, the mapping relationship between each time-frequency resource unit in the COT time-frequency resource area and the PSFCH subgroup where the first PFSCH is located can also be as shown in Figure 11. The COT time-frequency resource area includes 4 time-frequency resource units. Each time-frequency resource unit has a sub-channel in the frequency domain and a slot in the time domain. Each time-frequency resource unit in the COT time-frequency resource area is mapped to a PSFCH subgroup.

In an embodiment, the second terminal instructs the COT to share the request information by sending the PSFCH. The resource number of the first PSFCH and the identification number of the second terminal can be mapped according to certain rules. That is to say, the formula for determining the resource number of the first PSFCH at least includes the identification number of the second terminal. In addition, the formula for determining the resource number of the first PSFCH may include, in addition to the identification number of the second terminal, the source ID of the first terminal. The identification number of the second terminal here may be, for example, a member number within a group of UEs. Based on the mapping rule, the second terminal indicates the identification number of the second terminal in an implicit manner. After the second terminal sends the first PSFCH, the third terminal The first PSFCH is used to receive the first PSFCH. When the third terminal receives the first PSFCH corresponding to a certain PSFCH resource number, the third terminal can infer the identification number of the terminal corresponding to the PSFCH resource number according to the mapping rules, thereby identifying whether it was sent by the second terminal. The first PSFCH used to indicate COT sharing request information. The PSFCH resource number here may include numbers in one dimension or multiple dimensions in the time domain, frequency domain, and code domain. The code domain here corresponds to the code division situation, for example, different code domains correspond to the indices of different cyclic shift pairs of the sequence.

In an embodiment, the third terminal instructs the COT to share the confirmation information by sending the PSFCH. The PSFCH used by the third terminal to indicate the COT sharing confirmation information may be marked as the third PSFCH (ie, the third physical side link channel of the third terminal). Mapping is performed according to certain rules between the time-frequency resource location of the third PSFCH (or the PSFCH subgroup where the second PFSCH is located) and the indicated confirmed time-frequency resource. Based on the mapping rule, the third terminal indicates the time-frequency resource confirmed by it in an implicit manner, that is, instructs the COT to share the confirmation information in an implicit manner. The second terminal determines the time-frequency resources confirmed by the third terminal according to the mapping relationship between each time-frequency resource unit in the COT time-frequency resource area and the time-frequency resource position of the third PSFCH (or the PSFCH subgroup where the third PFSCH is located). . The third terminal may send multiple third PSFCHs to indicate more confirmed time-frequency resources.

In one embodiment, the mapping relationship between each time-frequency resource unit in the COT time-frequency resource area and the PSFCH subgroup where the third PFSCH is located can also be shown in Figure 11. The COT time-frequency resource area includes 4 time-frequency resource units. Each time-frequency resource unit has a sub-channel in the frequency domain and a slot in the time domain. Each time-frequency resource unit in the COT time-frequency resource area is mapped to a PSFCH subgroup.

In an embodiment, the third terminal instructs the COT to share the confirmation information by sending a PSFCH. The resource number of the third PSFCH and the identification number of the second terminal can be mapped according to certain rules. That is to say, the formula for determining the resource number of the third PSFCH at least includes the identification number of the second terminal. In addition, the formula for determining the resource number of the third PSFCH may include, in addition to the identification number of the second terminal, the source ID of the first terminal. The identification number of the second terminal here may be, for example, a member number within a group of UEs. Based on the mapping rule, the third terminal indicates the identification number of the second terminal in an implicit manner. After the third terminal sends the third PSFCH, the second terminal receives the third PSFCH. When the PSFCH resource number corresponding to the third PSFCH received by the second terminal has a mapping relationship with the identification number of the second terminal, the second terminal can recognize that the COT sharing confirmation information is sent to the second terminal. The PSFCH resource number here may include numbers in one dimension or multiple dimensions in the time domain, frequency domain, and code domain. The code domain here corresponds to the code division situation, for example, different code domains correspond to the indices of different cyclic shift pairs of the sequence.

In Figure 7, the first terminal sends COT sharing indication information. The second terminal receives the COT sharing indication information of the first terminal. The second terminal sends COT sharing request information. The third terminal receives the second terminal After sending the COT sharing request information, COT sharing confirmation information is sent to the second terminal.

In an embodiment, the second terminal instructs the COT to share the request information by sending the PSFCH. The resource number of the first PSFCH and the identification number of the second terminal can be mapped according to certain rules. That is to say, the formula for determining the resource number of the first PSFCH at least includes the identification number of the second terminal. In addition, the formula for determining the resource number of the first PSFCH may include, in addition to the identification number of the second terminal, the source ID of the first terminal. The identification number of the second terminal here may be, for example, a member number within a group of UEs. Based on the mapping rule, the second terminal indicates the identification number of the second terminal in an implicit manner. After the second terminal sends the first PSFCH, the third terminal receives the first PSFCH according to the first PSFCH corresponding to each PSFCH resource number. When the third terminal receives the first PSFCH corresponding to a certain PSFCH resource number, the third terminal can infer the identification number of the terminal corresponding to the PSFCH resource number according to the mapping rules, thereby identifying whether it was sent by the second terminal. The first PSFCH used to indicate COT sharing request information. The PSFCH resource number here may include numbers in one dimension or multiple dimensions in the time domain, frequency domain, and code domain. The code domain here corresponds to the code division situation, for example, different code domains correspond to the indices of different cyclic shift pairs of the sequence.

In one embodiment, the third terminal instructs the COT to share the confirmation information by sending the SCI. The third terminal sends SCI, which includes COT sharing confirmation information. The COT sharing confirmation information included in the SCI includes: the identification of at least one other terminal. By receiving the COT sharing request information, the third terminal learns which terminals have sent the COT sharing request information. That is to say, by receiving the COT sharing request information, the third terminal obtains the identification number of at least one terminal corresponding to the sending COT sharing request information. The third terminal selects the identification numbers of all or part of the terminals among the identification numbers of these terminals, and sends the identification numbers of these terminals to these terminals. The identification numbers of these terminals are included in the SCI, which is sent by the third terminal. Taking the third terminal receiving the COT sharing request information sent by the second terminal as an example, it is explained how the third terminal obtains the COT sharing request information sent by other terminals. The identification number of the terminal that sent the sharing request information. The second terminal indicates COT sharing request information by sending the first PSFCH. The resource number of the first PSFCH is mapped with the identification number of the second terminal and the source ID of the first terminal according to certain rules. That is to say, the formula for determining the resource number of the first PSFCH includes at least the source ID of the first terminal and the identification number of the second terminal. Based on the mapping rule, the second terminal indicates the identification number of the second terminal in an implicit manner. Therefore, the third terminal can identify whether it is the second terminal that sends the first PSFCH indicating the COT sharing request information. Before the third terminal determines the identification number of the second terminal based on the mapping rule, it has obtained the source ID of the first terminal by receiving the COT sharing indication information sent by the first terminal. The source ID can be considered as part of the information in the COT sharing indication information sent by the first terminal.

In Figure 4 or Figure 7, the second terminal receives the COT sharing indication information of the first terminal. The second terminal sends COT sharing request information. In an embodiment, the second terminal instructs the COT to share the request information by sending the PSFCH. The PSFCH used to indicate COT sharing request information may be marked as the first PSFCH.

In one embodiment, the COT time range indicated by the COT sharing indication information includes several time-frequency resource units. Figure 12 is a schematic diagram of the implementation of a time-frequency resource unit within the COT time range provided by an embodiment. Figure 13 is a schematic diagram of another implementation of time-frequency resource units within the COT time range provided by an embodiment. As shown in Figure 12 or Figure 13, the COT time range includes 16 time-frequency resource units. The frequency domain of each time-frequency resource unit is a sub-channel, and the time domain is a slot (i.e. time slot). The COT time range includes the numbers of 16 time-frequency resource units (that is, the numbers of time slots and frequency domain resources in the time-frequency resource set or sub-set shared within the COT time range). The time-frequency resource units included in the COT time range are mapped to the PSFCH subgroup according to certain mapping rules, that is, each time-frequency resource unit is mapped to the first physical edge link channel according to the setting method. The link channel is a PSFCH channel; the setting method for mapping each time-frequency resource unit to the corresponding PSFCH channel is determined based on the first setting formula, which is used to determine at least one resource number of the corresponding PSFCH channel. Including the time slot number and frequency domain resource number in the shared time-frequency resource set or sub-set within the COT time range. The time-frequency resource unit numbered 1 included in the COT time range is mapped to PSFCH subgroup 1, the time-frequency resource unit numbered 2 is mapped to PSFCH subgroup 2, and so on. For each PSFCH subgroup, there are several time-frequency resources that can be used for PSFCH transmission or reception.

Figure 14 is a schematic diagram of the implementation of a PSFCH subgroup provided by an embodiment. As shown in Figure 14, each PSFCH subgroup includes 4 time-frequency resources that can be used for PSFCH transmission or reception. Each PSFCH (ie, the PSFCH resource location of UE1, the PSFCH resource location of UE2, the PSFCH resource location of UE3 or UE4 PSFCH resource location) occupies a physical resource block (Physical Resource Block, PRB). In addition, each PSFCH can also occupy an interleaved resource block, and an interleaved resource block includes several discrete PRBs in the frequency domain. After receiving the PSFCH sent by the second terminal, the first terminal or the third terminal determines the received According to which PSFCH subgroup the time-frequency resource corresponding to the received PSFCH belongs to, you can determine which time-frequency resources included in the COT time range the second terminal has requested based on the mapping relationship between the time-frequency resource units included in the COT time range and the PSFCH subgroup. resource unit. (The resource to be requested establishes a mapping relationship with the PSFCH subgroup)

In one embodiment, after the second terminal determines the PSFCH subgroup, it determines the PSFCH resource number of the PSFCH it sends in the PSFCH subgroup (ie, a group of physical side link channels) (ie, determines the number of at least one time-frequency resource unit). The resource number of the mapped PSFCH channel within a set of physical side link channels). The second terminal determines the resource number of the PSFCH used to indicate the COT sharing request information according to the identification number of the second terminal and the source ID of the first terminal (that is, used to determine a first physical edge mapped to at least one time-frequency resource unit). The second setting formula for the resource number of the link channel in a group of physical side link channels includes: the source identifier of the first terminal and the identification number of the second terminal). The first terminal (or third terminal) determines which time-frequency resource unit or units within the COT time range the second terminal requested by judging the PSFCH subgroup in which the received PSFCH used to indicate the COT sharing request information is located. The first terminal (or third terminal) can determine which terminal or terminals sent the COT sharing request information by judging the time-frequency resource number of the received PSFCH in the PSFCH subgroup (ie, the PSFCH resource number). It can be seen that the first terminal can identify which terminal or terminals have sent the COT sharing request information (PSFCH resource number in the PSFCH subgroup), and can identify the COT resource requested by this or these terminals (PSFCH corresponding to the PSFCH subgroup number).

In one embodiment, after finding the mapped PSFCH subgroup, the second terminal determines the PSFCH resource number in the PSFCH subgroup used to indicate the PSFCH of the COT sharing request information, and sends the PSFCH corresponding to the PSFCH resource number to indicate COT shares request information. The second terminal determines the PSFCH resource number in the PSFCH subgroup of the PSFCH used to indicate the COT sharing request information based on the identification number of the second terminal and the source ID of the first terminal. The second terminal sends one PSFCH in each determined PSFCH subgroup. It is assumed that the resource numbers of the time-frequency resource units to be requested determined by the second terminal are 1, 2, 7 and 8. According to the mapping relationship, the second terminal finds the PSFCH subgroups mapped by these resource numbers, and the mapped PSFCH subgroups 1, 2, 7, and 8.

Figure 15 is a schematic diagram of the implementation of another PSFCH subgroup provided by an embodiment. As shown in Figure 15, the second terminal determines the PSFCH resource number of the PSFCH used to indicate the COT sharing request information based on the identification number of the second terminal and the source ID of the first terminal, which is located in PSFCH subgroups 1, 2, 7 and 8. The PSFCH resource position numbered 3 (that is, the PSFCH resource position of UE3), that is, the third PSFCH resource position in PSFCH subgroup 1, the third PSFCH resource position in PSFCH subgroup 2, and the third PSFCH resource position in PSFCH subgroup 7 The third PSFCH resource location, and the third PSFCH resource location in PSFCH subgroup 8. The second terminal sends 4 PSFCHs at the 4 PSFCH resource positions in the 4 PSFCH subgroups. The first terminal (or the third terminal) can know that the time-frequency resources numbered 1, 2, 7 and 8 within the COT time range are used by receiving the four PSFCHs located in PSFCH subgroups 1, 2, 7 and 8 respectively. ask. And, the PSFCH received by the first terminal through PSFCH subgroups 1, 2, 7 and 8, the PSFCH resource number in the PSFCH subgroup, It is deduced which UE requested the time-frequency resources numbered 1, 2, 7 and 8 within the COT time range. After determining the PSFCH subgroup, the second terminal determines the PSFCH resource number of the PSFCH it sends in the PSFCH subgroup. The second terminal determines the PSFCH resource number of the PSFCH used to indicate the COT sharing request information according to the identification number of the second terminal and the source ID of the first terminal. The first terminal (or third terminal) determines which time-frequency resource unit or units within the COT time range the second terminal requested by judging the PSFCH subgroup in which the received PSFCH used to indicate the COT sharing request information is located. The first terminal (or third terminal) can determine which terminal or terminals sent the COT sharing request information by judging the PSFCH resource number of the received PSFCH in the PSFCH subgroup. It can be seen that the first terminal can identify which terminal or terminals sent the COT sharing request information, and can identify the COT resources requested by the terminal or terminals.

In one embodiment, after finding the mapped PSFCH subgroup, the second terminal determines the PSFCH resource number in the PSFCH subgroup used to indicate the PSFCH of the COT sharing request information, and sends the PSFCH corresponding to the PSFCH resource number to indicate COT shares request information. The second terminal determines the PSFCH resource number in the PSFCH subgroup of the PSFCH used to indicate the COT sharing request information based on the identification number of the second terminal and the source ID of the first terminal. The second terminal sends one PSFCH in each determined PSFCH subgroup. It is assumed that the resource numbers of the time-frequency resource units to be requested determined by the second terminal are 1, 2, 7 and 8. According to the mapping relationship, the second terminal finds the PSFCH subgroups mapped by these resource numbers. The mapped PSFCH subgroups are PSFCH subgroups 1, 2, 7, and 8.

Figure 16 is a schematic diagram of the implementation of another PSFCH subgroup provided by an embodiment. As shown in Figure 16, each PSFCH subgroup includes 4 PSFCHs, and each PSFCH occupies 4 PRBs. These 4 PSFCHs correspond to different cyclic shifts of the same sequence. These 4 PSFCHs have different PSFCH resource numbers. The second terminal determines the resource number of the PSFCH used to indicate the COT sharing request information based on the identification number of the second terminal and the source ID of the first terminal. The PSFCH number 3 is located in PSFCH subgroups 1, 2, 7 and 8. Resource location. The second terminal sends 4 PSFCHs at the 4 PSFCH resource positions in the 4 PSFCH subgroups. The first terminal (or the third terminal) can know that the time-frequency resources numbered 1, 2, 7 and 8 within the COT range are requested by receiving four PSFCHs located in PSFCH subgroups 1, 2, 7 and 8 respectively. . And, the first terminal uses the PSFCH resource numbers in the PSFCH subgroup received by the PSFCH in the PSFCH subgroup 1, 2, 7 and 8 to deduce which UE requested the number 1, 2, 7 and 1 in the COT range. 8 time-frequency resources. After determining the PSFCH subgroup, the second terminal determines the PSFCH resource number of the PSFCH it sends in the PSFCH subgroup. The second terminal determines the PSFCH resource number of the PSFCH used to indicate the COT sharing request information according to the identification number of the second terminal and the source ID of the first terminal. The first terminal (or third terminal) determines which time-frequency resource unit or units within the COT time range the second terminal requested by judging the PSFCH subgroup in which the received PSFCH used to indicate the COT sharing request information is located. The first terminal (or third terminal) can determine which terminal or terminals sent the COT sharing request information by judging the resource number of the received PSFCH in the PSFCH subgroup. It can be seen that the first terminal can Identify which terminal or terminals sent the COT sharing request information, and identify the COT resources requested by this terminal or terminals.

In Figure 4 or Figure 7, the first terminal (or the third terminal) receives the COT sharing request information of the second terminal. The first terminal (or the third terminal) sends COT sharing confirmation information. In an embodiment, the first terminal (or the third terminal) instructs the COT to share the confirmation information by sending the PSFCH. The PSFCH used by the first terminal to indicate the COT sharing confirmation information may be marked as the second PSFCH, and the PSFCH used by the third terminal to indicate the COT sharing confirmation information may be marked as the third PSFCH.

In one embodiment, the COT time range indicated by the COT sharing indication information includes several time-frequency resource units. Figure 17 is a schematic diagram of the implementation of yet another time-frequency resource unit within the COT time range provided by an embodiment. Figure 18 is a schematic diagram of the implementation of yet another time-frequency resource unit within the COT time range provided by an embodiment. As shown in Figure 17 or Figure 18, the COT time range includes 16 time-frequency resource units. The frequency domain of each time-frequency resource unit is a sub-channel and the time domain is a slot. The COT time range includes the numbers of 16 time-frequency resource units. The time-frequency resource units included in the COT time range are mapped to PSFCH subgroups according to certain mapping rules. That is, the shared time-frequency resource set within the COT time range includes multiple time-frequency resource units. Each time-frequency resource unit The unit is mapped to the second physical side link channel (or the third physical side link channel) according to the setting method, and the second physical side link channel (or the third physical side link channel) is the PSFCH channel. The time-frequency resource unit numbered 1 included in the COT time range is mapped to PSFCH subgroup 1, the time-frequency resource unit numbered 2 is mapped to PSFCH subgroup 2, and so on. For each PSFCH subgroup, there are several time-frequency resources that can be used for PSFCH transmission or reception. As shown in Figure 14, each PSFCH subgroup includes 4 time-frequency resources that can be used for PSFCH transmission or reception, and each PSFCH occupies one PRB. In addition, each PSFCH can also occupy an interleaved resource block, and an interleaved resource block contains several discrete PRBs in the frequency domain. After the second terminal receives the PSFCH sent by the first terminal (or the third terminal) to indicate the COT sharing confirmation information, and determines which PSFCH subgroup the time-frequency resource corresponding to the received PSFCH belongs to, it can determine whether the time-frequency resource corresponding to the received PSFCH belongs to the PSFCH subgroup according to the COT time range. The mapping relationship between the included time-frequency resource units and the PSFCH subgroup determines whether the time-frequency resource units included in the COT time range determined by the first terminal are the time-frequency resources requested by the first terminal.

In one embodiment, after the first terminal (or the third terminal) determines the PSFCH subgroup, it determines the PSFCH resource number of the PSFCH it sends in the PSFCH subgroup (that is, determines that at least one time-frequency resource unit is in the mapped PSFCH The resource number of the channel within a set of physical side link channels). The first terminal (or the third terminal) determines the PSFCH resource number of the PSFCH used to indicate the COT sharing confirmation information (that is, used to determine the location of at least one time-frequency resource unit) based on the identification number of the second terminal and the source ID of the first terminal. The third setting formula for the resource number of a mapped PSFCH channel within a group of physical side link channels Including: the source identifier of the first terminal and the identification number of the second terminal). The second terminal determines the time-frequency resource unit within the COT time range confirmed by the first terminal (or the third terminal) by determining the PSFCH subgroup in which the received PSFCH used to indicate the COT sharing confirmation information is located. The second terminal determines whether the COT sharing confirmation information is sent to itself by determining the time-frequency resource number of the received PSFCH in the PSFCH subgroup. It can be seen that the second terminal can identify which time-frequency resources are confirmed by the COT sharing confirmation information, and can identify whether the time-frequency resources belong to itself.

In one embodiment, after the first terminal (or the third terminal) finds the mapped PSFCH subgroup, it determines the PSFCH resource number in the PSFCH subgroup used to indicate the PSFCH of the COT sharing confirmation information, and sends the PSFCH resource number corresponding to PSFCH, used to instruct COT to share confirmation information. The first terminal (or third terminal) determines the PSFCH resource number in the PSFCH subgroup of the PSFCH used to indicate the COT sharing confirmation information based on the identification number of the second terminal and the source ID of the first terminal. The first terminal (or the third terminal) sends one PSFCH in each determined PSFCH subgroup. It is assumed that the resource numbers of the requested time-frequency resource units determined by the first terminal (or the third terminal) are 1, 2, 7 and 8. According to the mapping relationship, the first terminal (or the third terminal) finds the PSFCH subgroups mapped by these resource numbers, and the mapped PSFCH subgroups 1, 2, 7, and 8.

Figure 19 is a schematic diagram of the implementation of another PSFCH subgroup provided by an embodiment. As shown in Figure 19, the first terminal (or the third terminal) determines the PSFCH resource number of the PSFCH used to indicate the COT sharing confirmation information based on the identification number of the second terminal and the source ID of the first terminal, which is located in PSFCH subgroup 1 , 2, 7 and 8, that is, the third PSFCH resource position in PSFCH subgroup 1, the third PSFCH resource position in PSFCH subgroup 2, and the third PSFCH resource position in PSFCH subgroup 7. Three PSFCH resource locations, and the third PSFCH resource location in PSFCH subgroup 8. The first terminal (or the third terminal) sends 4 PSFCHs at the 4 PSFCH resource positions in the 4 PSFCH subgroups. Through the received four PSFCHs located in PSFCH subgroups 1, 2, 7 and 8, the second terminal can know that the time-frequency resources numbered 1, 2, 7 and 8 within the COT time range are confirmed, and can identify these Whether the confirmed time-frequency resource is the resource requested by itself before. And, the second terminal uses the PSFCH received in PSFCH subgroups 1, 2, 7 and 8 and the PSFCH resource number in the PSFCH subgroup to determine whether the PSFCH corresponding to the PSFCH resource number in the PSFCH subgroup is sent to its own . After determining the PSFCH subgroup, the first terminal (or the third terminal) determines the PSFCH resource number of the PSFCH it sends in the PSFCH subgroup. The first terminal (or the third terminal) determines the PSFCH resource number of the PSFCH used to indicate the COT sharing confirmation information based on the identification number of the second terminal and the source ID of the first terminal. The second terminal determines which time-frequency resource units are within the COT time range determined by the first terminal (or the third terminal) by determining the PSFCH subgroup in which the received PSFCH used to indicate the COT sharing confirmation information is located, and can Identify whether these confirmed time-frequency resources are the resources previously requested by you. By determining the PSFCH resource number of the received PSFCH in the PSFCH subgroup, the second terminal can determine whether the PSFCH corresponding to the PSFCH resource number in the PSFCH subgroup is sent to itself. It can be seen that the second terminal can recognize the COT Whether the time-frequency resource indicated by the sharing confirmation information is the COT resource previously requested by itself, and whether the resource indicated by the COT sharing confirmation information is sent to itself. If the second terminal determines that the time-frequency resource indicated by the COT sharing confirmation information is the COT resource previously requested by itself, and the COT sharing confirmation information is sent to itself, the second terminal can use the time-frequency resource indicated by the COT sharing confirmation information. frequency resources.

In one embodiment, after the first terminal (or the third terminal) finds the mapped PSFCH subgroup, it determines the PSFCH resource number in the PSFCH subgroup used to indicate the PSFCH of the COT sharing confirmation information, and sends the PSFCH resource number corresponding to PSFCH, used to instruct COT to share confirmation information. The first terminal (or third terminal) determines the PSFCH resource number in the PSFCH subgroup of the PSFCH used to indicate the COT sharing confirmation information based on the identification number of the second terminal and the source ID of the first terminal. The first terminal (or the third terminal) sends one PSFCH in each determined PSFCH subgroup. It is assumed that the resource numbers of the time-frequency resource units to be requested determined by the first terminal (or the third terminal) are 1, 2, 7 and 8. According to the mapping relationship, the first terminal (or the third terminal) finds the PSFCH subgroups mapped by these resource numbers. The mapped PSFCH subgroups are PSFCH subgroups 1, 2, 7, and 8.

Figure 20 is a schematic diagram of the implementation of another PSFCH subgroup provided by an embodiment. As shown in Figure 20, each PSFCH subgroup includes 4 PSFCHs, and each PSFCH occupies 4 PRBs. These 4 PSFCHs correspond to different cyclic shifts of the same sequence. These 4 PSFCHs have different PSFCH resource numbers. The first terminal (or the third terminal) determines the PSFCH resource number of the PSFCH used to indicate the COT sharing confirmation information based on the identification number of the second terminal and the source ID of the first terminal, which is located in PSFCH subgroups 1, 2, 7 and 8. PSFCH resource numbered 3 in . The first terminal (or the third terminal) sends 4 PSFCHs at the 4 PSFCH resource positions in the 4 PSFCH subgroups. By receiving four PSFCHs located in PSFCH subgroups 1, 2, 7 and 8, the second terminal can know that the time-frequency resources numbered 1, 2, 7 and 8 within the COT range are confirmed, and can identify these time-frequency resources. Confirm whether the time-frequency resource is the resource you requested before. And, the second terminal uses the PSFCH received in PSFCH subgroups 1, 2, 7 and 8 and the PSFCH resource number in the PSFCH subgroup to determine whether the PSFCH corresponding to the PSFCH resource number in the PSFCH subgroup is sent to its own . After determining the PSFCH subgroup, the first terminal (or the third terminal) determines the PSFCH resource number of the PSFCH it sends in the PSFCH subgroup. The first terminal (or the third terminal) determines the PSFCH resource number of the PSFCH used to indicate the COT sharing confirmation information based on the identification number of the second terminal and the source ID of the first terminal. The second terminal determines which time-frequency resource units are within the COT time range determined by the first terminal (or the third terminal) by determining the PSFCH subgroup in which the received PSFCH used to indicate the COT sharing confirmation information is located, and can Identify whether these confirmed time-frequency resources are the resources previously requested by you. By determining the PSFCH resource number of the received PSFCH in the PSFCH subgroup, the second terminal can determine whether the PSFCH corresponding to the PSFCH resource number in the PSFCH subgroup is sent to itself. It can be seen that the second terminal can identify whether the time-frequency resource indicated by the COT sharing confirmation information is the COT resource previously requested by itself, and can identify the resource indicated by the COT sharing confirmation information. Whether it is sent to yourself. If the second terminal determines that the time-frequency resource indicated by the COT sharing confirmation information is the COT resource previously requested by itself, and the COT sharing confirmation information is sent to itself, the second terminal can use the time-frequency resource indicated by the COT sharing confirmation information. frequency resources.

An embodiment of the present application also provides an information transmission device. FIG. 21 is a schematic structural diagram of an information transmission device according to an embodiment. As shown in Figure 21, the information transmission device can be configured at the first terminal and includes:

The first sending module 410 is configured to send COT sharing indication information; the first receiving module 420 is configured to receive COT request information.

In the information transmission device of this embodiment, the first terminal can notify the terminal that receives the COT sharing indication information (such as the second terminal) by sending the COT sharing indication information, which time-frequency resources are shared by the first terminal; the first terminal also sends the COT sharing indication information by sending the COT sharing indication information. The request information can know the time-frequency resources requested by the terminal (such as the second terminal) that sends the COT request information. This solves the problem that COT sharing is not supported in SideLink communication.

There is a mapping relationship between the resource index corresponding to the channel where the COT request information is sent and the time-frequency resource where the COT sharing indication information is sent; there is a mapping relationship between the resource index corresponding to the channel where the COT request information is sent and the set of shared time-frequency resources within the COT time range. Mapping relationship; there is a mapping relationship between the resource index corresponding to the channel that sends the COT request information and a subset of the shared time-frequency resource set within the COT time range.

In one embodiment, the set of time-frequency resources shared within the COT time range includes multiple time-frequency resources. unit, and each time-frequency resource unit is mapped to the first physical side link channel in a setting manner.

In one embodiment, the device further includes:

The first number determination module is configured to determine the resource number of the first physical side link channel mapped by at least one time-frequency resource unit within a group of physical side link channels; used to determine the resource number mapped by at least one time-frequency resource unit. The second setting formula for the resource number of a first physical side link channel within a group of physical side link channels includes: the source identifier of the first terminal and the identification number of the second terminal.

In one embodiment, the device further includes:

The first confirmation information sending module is configured to send COT sharing confirmation information.

In one embodiment, the device further includes:

The second number determination module is configured to determine the resource number of the second physical side link channel mapped by at least one time-frequency resource unit within a group of physical side link channels; used to determine the resource number mapped by at least one time-frequency resource unit. The third setting formula for the resource number of a second physical side link channel within a group of physical side link channels includes: the source identifier of the first terminal and the identification number of the second terminal.

The information transmission device proposed in this embodiment and the information transmission method proposed in the above embodiments belong to the same concept. Technical details not described in detail in this embodiment can be referred to any of the above embodiments, and this embodiment has the same features as the information transmission method. Effect.

An embodiment of the present application also provides an information transmission device. FIG. 22 is a schematic structural diagram of an information transmission device according to an embodiment. As shown in Figure 22, the information transmission device can be configured at the second terminal, including:

The second receiving module 510 is configured to receive COT sharing indication information; the second sending module 520 is configured to send COT request information; and the third receiving module 530 is configured to receive COT sharing confirmation information.

In the information transmission device of this embodiment, the second terminal can know which time-frequency resources are shared by the first terminal by receiving the COT sharing indication information; and then notify the terminal that receives the COT request information (such as the first terminal or the third terminal) by sending the COT request information. Three terminals) What are the time-frequency resources to be requested? Finally, by receiving the COT sharing confirmation information, it can be determined that the requested time-frequency resources can be used at this time. This can solve the problem that COT sharing is not supported in SideLink communication, and can also solve the resource conflict problem caused by multiple terminals simultaneously requesting the same time-frequency resource in COT sharing through COT sharing confirmation information.

In one embodiment, the device further includes:

The set determination module is configured to determine the time-frequency resource set shared within the COT time range based on the COT sharing indication information. The time-frequency resource set includes multiple time-frequency resource units, and each time-frequency resource unit is mapped to the first time-frequency resource unit in a set manner. A physical side link channel.

In one embodiment, the device further includes:

The third number determination module is configured to determine the resource number of the first physical side link channel mapped by at least one time-frequency resource unit within a group of physical side link channels; used to determine the resource number mapped by at least one time-frequency resource unit. The second setting formula for the resource number of a first physical side link channel within a group of physical side link channels includes: the source identifier of the first terminal and the identification number of the second terminal.

In an embodiment, the setting method for mapping each time-frequency resource unit to the corresponding second physical side link channel is determined based on the first setting formula; used to determine at least one of the corresponding second physical side link channels. The first setting formula of the resource number includes the time slot number and the number of the frequency domain resource in the shared time-frequency resource set or sub-set within the COT time range.

In one embodiment, the device further includes:

The fourth number determination module is configured to determine the resource number of the second physical side link channel mapped by at least one time-frequency resource unit within a group of physical side link channels; used to determine the resource number mapped by at least one time-frequency resource unit. The second setting formula for the resource number of a second physical side link channel within a group of physical side link channels includes: the source identifier of the first terminal and the identification number of the second terminal.

An embodiment of the present application also provides an information transmission device. FIG. 23 is a schematic structural diagram of an information transmission device according to an embodiment. As shown in Figure 23, the information transmission device can be configured in the third terminal, including:

The fourth receiving module 610 is configured to receive COT request information; the third sending module 620 is configured to send COT sharing confirmation information.

In the information transmission device of this embodiment, the third terminal can know the time-frequency resources requested by the second terminal by receiving the COT request information; the third terminal also notifies the terminal receiving the COT sharing confirmation information by sending the COT sharing confirmation information (such as the third terminal). Second terminal), the second terminal can use the requested time-frequency resources corresponding to the COT request information. This solves the problem that COT sharing is not supported in SideLink communication, and also solves the resource conflict problem caused by multiple terminals simultaneously requesting the same time-frequency resource in COT sharing through COT sharing confirmation information.

In one embodiment, the device further includes:

The fifth number determination module is configured to determine the resource number of the first physical side link channel mapped by at least one time-frequency resource unit within a group of physical side link channels; used to determine the resource number mapped by at least one time-frequency resource unit. The second setting formula for the resource number of a first physical side link channel within a group of physical side link channels includes: the source identifier of the first terminal and the identification number of the second terminal.

The second physical side link channel is the PSFCH channel; the second physical side link channel occupies several resource elements in 2 OFDM symbols in one time slot, where the first physical side link on the first OFDM symbol The resource elements mapped by the channel are obtained by copying the resource elements mapped by the first physical side link channel on the second OFDM symbol.

In one embodiment, the device further includes:

The sixth number determination module is configured to determine the resource number of the second physical side link channel mapped by at least one time-frequency resource unit within a group of physical side link channels; used to determine the resource number mapped by at least one time-frequency resource unit. The second setting formula for the resource number of a second physical side link channel within a group of physical side link channels includes: the source identifier of the first terminal and the identification number of the second terminal.

An embodiment of the present application also provides a user terminal. Figure 24 is a schematic diagram of the hardware structure of a user terminal provided by an embodiment. As shown in Figure 24, the user terminal provided by the present application may include a first terminal, a second terminal The terminal and the third terminal, the user terminal includes a memory 720, a processor 710, and a computer program stored in the memory and executable on the processor. When the processor 710 executes the program, the above information transmission method is implemented.

The user terminal may also include a memory 720; there may be one or more processors 710 in the user terminal, and one processor 710 is taken as an example in Figure 24; the memory 720 is used to store one or more programs; The one or more programs are executed by the one or more processors 710, so that the one or more processors 710 implement the information transmission method as described in the embodiment of this application.

The user terminal also includes: a communication device 730, an input device 740, and an output device 750.

The processor 710, the memory 720, the communication device 730, the input device 740 and the output device 750 in the user terminal can be connected through a bus or other means. In Figure 24, connection through a bus is taken as an example.

The input device 740 may be used to receive input numeric or character information and generate key signal input related to user settings and function control of the user terminal. The output device 750 may include a display device such as a display screen.

Communication device 730 may include a receiver and a transmitter. The communication device 730 is configured to perform information transceiver communication according to the control of the processor 710 .

As a computer-readable storage medium, the memory 720 can be configured to store software programs, computer-executable programs, and modules, such as program instructions/modules corresponding to the information transmission method described in the embodiments of the present application (for example, the third module in the information transmission device). A sending module 410 and a first receiving module 420; or, the second receiving module 510, the second sending module 520 and the third receiving module 530 in the information transmission device; or, the fourth receiving module 610 and the third receiving module 530 in the information transmission device. 3. Sending module 620). The memory 720 may include a stored program area and a stored data area, where the stored program area may store an operating system and an application program required for at least one function; the stored data area may store data created according to use of the user terminal, etc. In addition, memory 720 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage device. In some examples, the memory 720 may include memory located remotely relative to the processor 710, and these remote memories may be connected to the user terminal through a network. Examples of the above-mentioned networks include but are not limited to the Internet, intranets, local area networks, mobile communication networks and combinations thereof.

Embodiments of the present application also provide a storage medium. The storage medium stores a computer program. When the computer program is executed by a processor, any one of the information transmission methods described in the embodiments of the present application is implemented.

The information transmission method, applied to the first terminal, includes: sending COT sharing indication information; receiving COT request information.

The information transmission method, applied to the second terminal, includes: receiving COT sharing indication information; sending COT request information; and receiving COT sharing confirmation information.

The information transmission method, applied to the third terminal, includes: receiving COT request information; sending COT sharing confirmation information.

The computer storage medium in the embodiment of the present application may use one or more computer-readable media. any combination of. The computer-readable medium may be a computer-readable signal medium or a computer-readable storage medium. The computer-readable storage medium may be, for example, but is not limited to: an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination thereof. Examples (a non-exhaustive list) of computer-readable storage media include: an electrical connection having one or more conductors, a portable computer disk, a hard drive, Random Access Memory (RAM), Read Only Memory (ROM), Erasable Programmable Read Only Memory (EPROM), flash memory, optical fiber, portable CD-ROM, optical storage device, magnetic storage device, or any suitable combination of the above. A computer-readable storage medium may be any tangible medium that contains or stores a program for use by or in connection with an instruction execution system, apparatus, or device.

A computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave carrying computer-readable program code therein. Such propagated data signals may take many forms, including but not limited to: electromagnetic signals, optical signals, or any suitable combination of the above. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium that can send, propagate, or transmit a program for use by or in connection with an instruction execution system, apparatus, or device .

Program code embodied on a computer-readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wire, optical cable, radio frequency (Radio Frequency, RF), etc., or any suitable combination of the above.

Computer program code for performing operations of the present application may be written in one or more programming languages, including object-oriented programming languages such as Java, Smalltalk, C++, and conventional A procedural programming language, such as the "C" language or similar programming language. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In situations involving remote computers, the remote computer can be connected to the user's computer through any kind of network, including a local area network (LAN) or a wide area network (WAN), or it can be connected to an external computer (such as an Internet service provider through the Internet). connect).

The above descriptions are only exemplary embodiments of the present application and are not used to limit the protection scope of the present application.

Those skilled in the art will understand that the term user terminal covers any suitable type of wireless user equipment, such as a mobile phone, a portable data processing device, a portable web browser or a vehicle-mounted mobile station.

Generally speaking, the various embodiments of the present application may be implemented in hardware or special purpose circuitry, software, logic, or any combination thereof. For example, some aspects may be implemented in hardware, while other aspects may be This may now be in firmware or software executed by a controller, microprocessor or other computing device, although the application is not limited thereto.

Embodiments of the present application may be implemented by a data processor of the mobile device executing computer program instructions, for example in a processor entity, or by hardware, or by a combination of software and hardware. Computer program instructions may be assembly instructions, Instruction Set Architecture (ISA) instructions, machine instructions, machine-related instructions, microcode, firmware instructions, state setting data, or written in any combination of one or more programming languages source code or object code.

Any block diagram of a logic flow in the figures of this application may represent program operations, or may represent interconnected logic circuits, modules, and functions, or may represent a combination of program operations and logic circuits, modules, and functions. Computer programs can be stored on memory. The memory may be of any type suitable for the local technical environment and may be implemented using any suitable data storage technology, such as but not limited to Read-Only Memory (ROM), Random Access Memory (RAM), optical Memory devices and systems (Digital Video Disc (DVD) or Compact Disk (CD)), etc. Computer-readable media may include non-transitory storage media. The data processor may be any device suitable for the local technical environment Types, such as but not limited to general-purpose computers, special-purpose computers, microprocessors, digital signal processors (Digital Signal Processing, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), programmable logic devices (Field-Programmable Gate Array) , FPGA) and processors based on multi-core processor architecture.

Claims

An information transmission method, applied to the first terminal, including:

Send channel occupancy time COT sharing indication information;

Receive COT request information.
The method according to claim 1, wherein the resource index corresponding to the channel for sending the COT request information satisfies at least one of the following:

There is a mapping relationship between the resource index corresponding to the channel where the COT request information is sent and the time-frequency resource where the COT sharing indication information is sent;

There is a mapping relationship between the resource index corresponding to the channel for sending the COT request information and the shared time-frequency resource set within the COT time range;

There is a mapping relationship between the resource index corresponding to the channel that sends the COT request information and a subset of the shared time-frequency resource set within the COT time range.
The method according to claim 1, wherein the COT request information is transmitted through a first physical side link channel.
The method according to claim 3, wherein the first physical side link channel satisfies at least one of the following:

The first physical side link channel is a physical side link feedback channel PSFCH channel;

The first physical side link channel occupies multiple resource elements in 2 orthogonal frequency division multiplexing OFDM symbols in one time slot, where the first physical side link channel on the first OFDM symbol is mapped The resource element is obtained by copying the resource element mapped by the first physical side link channel on the second OFDM symbol.
The method according to claim 3, wherein there is a mapping relationship between the first physical side link channel and the time-frequency resource where the COT sharing indication information is sent.
The method according to claim 3, wherein there is a mapping relationship between the first physical side link channel and a shared time-frequency resource set within the COT time range; or,

There is a mapping relationship between the first physical side link channel and a subset of the shared time-frequency resource set within the COT time range.
The method of claim 3, wherein,

The shared time-frequency resource set within the COT time range includes multiple time-frequency resource units, and each time-frequency resource unit is mapped to the first physical side link channel in a setting manner.
The method of claim 7, wherein

The setting method for mapping each time-frequency resource unit to the corresponding first physical side link channel is determined based on the first setting formula;

The first setting formula used to determine at least one resource number of the corresponding first physical side link channel includes a time slot number corresponding to a resource corresponding to the determined resource number and a frequency domain resource number.
The method of claim 7, further comprising:

Determine the resource number of the first physical side link channel mapped by at least one time-frequency resource unit within a group of physical side link channels;

The second setting formula for determining the resource number of a first physical side link channel mapped by at least one time-frequency resource unit within the group of physical side link channels includes: the source identifier of the first terminal and the 2. The identification number of the terminal.
The method of claim 1, further comprising:

Send COT sharing confirmation information.
The method according to claim 10, wherein the COT sharing confirmation information is transmitted through a second physical side link channel.
The method according to claim 11, wherein the second physical side link channel satisfies at least one of the following:

The second physical side link channel is the PSFCH channel;

The second physical side link channel occupies multiple resource elements in 2 OFDM symbols in one time slot, wherein the resource elements mapped by the first physical side link channel on the first OFDM symbol pass through the second The resource element mapped by the first physical side link channel on the OFDM symbol is copied and obtained.
The method according to claim 11, wherein there is a mapping relationship between the second physical side link channel and the time-frequency resource where the COT sharing indication information is sent.
The method of claim 11, wherein

There is a mapping relationship between the second physical side link channel and the shared time-frequency resource set within the COT time range; or,

There is a mapping relationship between the second physical side link channel and a subset of the shared time-frequency resource set within the COT time range.
The method according to claim 11, wherein the shared time-frequency resource set within the COT time range includes multiple time-frequency resource units, and each time-frequency resource unit is mapped to the second physical edge link in a setting manner. channel.
The method of claim 15, further comprising:

Determine the resource number of the second physical side link channel mapped by at least one time-frequency resource unit within a group of physical side link channels;

The third setting formula for determining the resource number of a second physical side link channel mapped by at least one time-frequency resource unit within a group of physical side link channels includes: the source identifier of the first terminal and the second terminal identification number.
The method according to claim 11, wherein the COT sharing confirmation information is included in side link control information SCI.
The method according to claim 11, wherein the COT sharing confirmation information includes a terminal identification number of at least one terminal, and the terminal identification number is used for confirmation of the COT sharing confirmation information.
An information transmission method, applied to the second terminal, including:

Receive channel occupancy time COT sharing indication information;

Send COT request information;

Receive COT sharing confirmation information.
The method of claim 19, wherein the COT request information is transmitted through a first physical side link channel.
The method according to claim 20, wherein there is a mapping relationship between the first physical side link channel and the time-frequency resource where the COT sharing indication information is sent.
The method of claim 20, wherein:

There is a mapping relationship between the first physical side link channel and the shared time-frequency resource set within the COT time range; or,

There is a mapping relationship between the first physical side link channel and a subset of the shared time-frequency resource set within the COT time range.
The method of claim 20, further comprising:

According to the COT sharing indication information, a set of time-frequency resources shared within the COT time range is determined. The set of time-frequency resources includes a plurality of time-frequency resource units, and each time-frequency resource unit is mapped to the first time-frequency resource unit in a setting manner. A physical side link channel.
The method of claim 23, wherein:

The setting method for mapping each time-frequency resource unit to the corresponding first physical side link channel is determined based on the first setting formula;

A first setting formula for determining at least one resource number of the corresponding first physical side link channel includes the time slot number corresponding to the resource corresponding to the determined resource number and the number of the frequency domain resource.
The method of claim 23, further comprising:

Determine the resource number of the first physical side link channel mapped by at least one time-frequency resource unit within a group of physical side link channels;

The second setting formula used to determine the resource number of a first physical side link channel mapped by at least one time-frequency resource unit in the group of physical side link channels includes: the source identifier of the first terminal and the third 2. The identification number of the terminal.
The method according to claim 19, wherein the COT sharing confirmation information is transmitted through a second physical side link channel or a third physical side link channel of the third terminal.
The method according to claim 26, wherein the third physical side link channel satisfies at least one of the following:

The third physical side link channel is a physical side link feedback channel PSFCH channel;

The third physical side link channel occupies multiple resource elements in 2 orthogonal frequency division multiplexing OFDM symbols in one time slot, where the first physical side link channel on the first OFDM symbol is mapped The resource element is obtained by copying the resource element mapped by the first physical side link channel on the second OFDM symbol.
An information transmission method, applied to a third terminal, including:

Receive channel occupancy time COT request information;

Send COT sharing confirmation information.
A user terminal, including: a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the program, any one of claims 1-28 is implemented. The information transmission method described in the item.
A computer-readable storage medium stores a computer program. When the program is executed by a processor, the information transmission method as described in any one of claims 1-28 is implemented.