WO2025091408A1

WO2025091408A1 - Channel access method, communication method, terminal, and storage medium

Info

Publication number: WO2025091408A1
Application number: PCT/CN2023/129427
Authority: WO
Inventors: 赵群
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2023-11-02
Filing date: 2023-11-02
Publication date: 2025-05-08
Anticipated expiration: 2026-05-02
Also published as: CN120304002A

Abstract

The present disclosure relates to the technical field of communications, and in particular to a channel access method, a communication method, a terminal, and a storage medium. The channel access method comprises: triggering a channel access process for a plurality of channels in an unlicensed frequency band on the basis of first transmission in a sidelink; and on the basis of second transmission after the first transmission, determining a multi-channel access mechanism for accessing the plurality of channels. According to the present disclosure, when a terminal needs to perform second transmission after first transmission, the terminal can comprehensively consider the first transmission and the second transmission, thereby reasonably determining a multi-channel access mechanism for accessing a plurality of channels, and then performing multi-channel access on the basis of the determined multi-channel access mechanism, thus facilitating avoiding the technical problem of large delay of multi-channel access as much as possible.

Description

Channel access method, communication method, terminal and storage medium

Technical Field

本公开涉及通信技术领域，具体而言，涉及信道接入方法、通信方法、终端、通信系统、存储介质。The present disclosure relates to the field of communication technology, and in particular, to a channel access method, a communication method, a terminal, a communication system, and a storage medium.

Background Art

随着通信技术的发展，终端不仅可以在授权频段上通信，也可以在非授权频段上通信。并且，终端的通信方式也有所拓展，例如终端可以通过直连链路(sidelink)进行通信。进一步地，终端可以在非授权频段上进行直连链路通信，但是在此场景下进行信道接入存在一些技术问题。With the development of communication technology, terminals can communicate not only on licensed frequency bands, but also on unlicensed frequency bands. In addition, the communication methods of terminals have also been expanded. For example, terminals can communicate through direct links (sidelink). Furthermore, terminals can communicate through direct links on unlicensed frequency bands, but there are some technical problems in channel access in this scenario.

发明内容Summary of the invention

本公开的实施例提出了信道接入方法、通信方法、终端和存储介质，以解决相关技术中的技术问题。The embodiments of the present disclosure propose a channel access method, a communication method, a terminal and a storage medium to solve the technical problems in the related art.

根据本公开实施例的第一方面，提出一种信道接入方法，由第一终端执行，所述方法包括：基于在直连链路的第一传输触发对非授权频段中的多个信道的信道接入过程；根据所述第一传输之后的第二传输确定用于接入所述多个信道的多信道接入机制。According to a first aspect of an embodiment of the present disclosure, a channel access method is proposed, which is executed by a first terminal. The method includes: triggering a channel access process for multiple channels in an unlicensed frequency band based on a first transmission in a direct link; and determining a multi-channel access mechanism for accessing the multiple channels based on a second transmission after the first transmission.

根据本公开实施例的第二方面，提出一种通信方法，由第二终端执行，所述方法包括：在非授权频段的多个信道上通过直连链路与第一方面所述的第一终端通信。According to a second aspect of an embodiment of the present disclosure, a communication method is proposed, which is executed by a second terminal. The method includes: communicating with the first terminal described in the first aspect through a direct link on multiple channels in an unlicensed frequency band.

根据本公开实施例的第三方面，提出一种终端，包括：一个或多个处理器；其中，所述终端用于执行第一方面所述的信道接入方法。According to a third aspect of an embodiment of the present disclosure, a terminal is proposed, comprising: one or more processors; wherein the terminal is used to execute the channel access method described in the first aspect.

根据本公开实施例的第四方面，提出一种终端，包括：一个或多个处理器；其中，所述终端用于执行第二方面所述的通信方法。According to a fourth aspect of an embodiment of the present disclosure, a terminal is proposed, comprising: one or more processors; wherein the terminal is used to execute the communication method described in the second aspect.

根据本公开实施例的第五方面，提出一种通信系统，包括第一终端和第二终端，其中，所述第一终端被配置为实现第一方面所述的信道接入方法，所述第二终端被配置为实现第二方面所述的通信方法。According to the fifth aspect of an embodiment of the present disclosure, a communication system is proposed, comprising a first terminal and a second terminal, wherein the first terminal is configured to implement the channel access method described in the first aspect, and the second terminal is configured to implement the communication method described in the second aspect.

根据本公开实施例的第六方面，提出一种存储介质，所述存储介质存储有指令，当所述指令在通信设备上运行时，使得所述通信设备执行第一方面所述的信道接入方法，和/或第二方面所述的通信方法。According to the sixth aspect of an embodiment of the present disclosure, a storage medium is proposed, which stores instructions. When the instructions are executed on a communication device, the communication device executes the channel access method described in the first aspect and/or the communication method described in the second aspect.

根据本公开的实施例，当终端需要第一传输之后进行第二传输，终端可以综合考虑第一传输和第二传输，从而合理地确定用于接入多个信道的多信道接入机制，进而基于所确定的多信道接入机制进行多信道接入，有利于尽量避免上述多信道接入时延较大的技术问题。According to an embodiment of the present disclosure, when a terminal needs to perform a second transmission after a first transmission, the terminal can comprehensively consider the first transmission and the second transmission, so as to reasonably determine a multi-channel access mechanism for accessing multiple channels, and then perform multi-channel access based on the determined multi-channel access mechanism, which is conducive to avoiding the above-mentioned technical problem of large multi-channel access delay as much as possible.

BRIEF DESCRIPTION OF THE DRAWINGS

为了更清楚地说明本公开实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本公开的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present disclosure, and those skilled in the art can also refer to these drawings without creative work. Get additional drawings.

图1是根据本公开实施例示出的通信系统的架构示意图。FIG1 is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure.

图2是根据本公开的实施例示出的一种通信方法的交互示意图。FIG2 is an interactive schematic diagram showing a communication method according to an embodiment of the present disclosure.

图3是根据本公开的实施例示出的一种多信道接入的场景示意图。FIG3 is a schematic diagram showing a multi-channel access scenario according to an embodiment of the present disclosure.

图4是根据本公开的实施例示出的一种信道接入方法的示意流程图。FIG4 is a schematic flowchart of a channel access method according to an embodiment of the present disclosure.

图5是根据本公开的实施例示出的另一种多信道接入的场景示意图。FIG5 is a schematic diagram showing another multi-channel access scenario according to an embodiment of the present disclosure.

图6是根据本公开的实施例示出的又一种多信道接入的场景示意图。FIG6 is a schematic diagram showing another multi-channel access scenario according to an embodiment of the present disclosure.

图7是根据本公开的实施例示出的一种终端的示意框图。FIG. 7 is a schematic block diagram of a terminal according to an embodiment of the present disclosure.

图8是根据本公开的实施例示出的一种终端的示意框图。FIG8 is a schematic block diagram of a terminal according to an embodiment of the present disclosure.

图9A是本公开实施例提出的通信设备的结构示意图。FIG. 9A is a schematic diagram of the structure of a communication device proposed in an embodiment of the present disclosure.

图9B是本公开实施例提出的芯片的结构示意图。FIG. 9B is a schematic diagram of the structure of a chip proposed in an embodiment of the present disclosure.

DETAILED DESCRIPTION

本公开的实施例提出信道接入方法、通信方法、终端和存储介质。Embodiments of the present disclosure provide a channel access method, a communication method, a terminal, and a storage medium.

第一方面，本公开的实施例提出了一种信道接入方法，由第一终端执行，所述方法包括：基于在直连链路的第一传输触发对非授权频段中的多个信道的信道接入过程；根据所述第一传输之后的第二传输确定用于接入所述多个信道的多信道接入机制。In a first aspect, an embodiment of the present disclosure proposes a channel access method executed by a first terminal, the method comprising: triggering a channel access process for multiple channels in an unlicensed frequency band based on a first transmission in a direct link; and determining a multi-channel access mechanism for accessing the multiple channels based on a second transmission after the first transmission.

在上述实施例中，当终端需要第一传输之后进行第二传输，终端可以综合考虑第一传输和第二传输，从而合理地确定用于接入多个信道的多信道接入机制，进而基于所确定的多信道接入机制进行多信道接入，有利于尽量避免上述多信道接入时延较大的技术问题。In the above embodiment, when the terminal needs to perform the second transmission after the first transmission, the terminal can comprehensively consider the first transmission and the second transmission, so as to reasonably determine the multi-channel access mechanism for accessing multiple channels, and then perform multi-channel access based on the determined multi-channel access mechanism, which is conducive to avoiding the above-mentioned technical problem of large multi-channel access delay as much as possible.

结合第一方面的一些实施例。在一些实施例中，所述多信道接入机制包括以下至少之一：第一多信道接入机制；第二多信道接入机制。In combination with some embodiments of the first aspect, in some embodiments, the multi-channel access mechanism includes at least one of the following: a first multi-channel access mechanism; a second multi-channel access mechanism.

结合第一方面的一些实施例。在一些实施例中，所述第一多信道接入机制包括：直连链路传输的多信道接入机制。In combination with some embodiments of the first aspect, in some embodiments, the first multi-channel access mechanism includes: a multi-channel access mechanism for direct link transmission.

结合第一方面的一些实施例。在一些实施例中，所述第二多信道接入机制包括以下至少之一：In combination with some embodiments of the first aspect. In some embodiments, the second multi-channel access mechanism includes at least one of the following:

用于物理直连链路反馈信道的类型A1多信道接入机制；Type A1 multi-channel access mechanism for the physical direct link feedback channel;

用于直连链路同步广播块的类型A1多信道接入机制；Type A1 multi-channel access mechanism for direct link synchronous broadcast blocks;

用于物理直连链路反馈信道的类型A2多信道接入机制；Type A2 multi-channel access mechanism for the physical direct link feedback channel;

用于直连链路同步广播块的类型A2多信道接入机制；Type A2 multi-channel access mechanism for direct link synchronous broadcast blocks;

用于物理直连链路反馈信道的类型B1多信道接入机制；Type B1 multi-channel access mechanism for physical direct link feedback channel;

用于直连链路同步广播块的类型B1多信道接入机制；Type B1 multi-channel access mechanism for direct link synchronous broadcast blocks;

用于物理直连链路反馈信道的类型B2多信道接入机制；Type B2 multi-channel access mechanism for physical direct link feedback channel;

用于直连链路同步广播块的类型B2多信道接入机制。 Type B2 multi-channel access mechanism for direct link synchronization broadcast blocks.

结合第一方面的一些实施例。在一些实施例中，所述第一传输包括以下至少之一：物理直连链路反馈信道；直连链路同步广播块。In combination with some embodiments of the first aspect, in some embodiments, the first transmission includes at least one of the following: a physical direct link feedback channel; and a direct link synchronization broadcast block.

结合第一方面的一些实施例。在一些实施例中，所述方法还包括：所述第一传输包括直连链路同步广播块，根据所述第一传输之后的第二传输确定用于接入所述多个信道的多信道接入机制，或者，确定所述多个信道中在所述第一传输之后存在所述第二传输的第一部分信道，确定在所述第一部分信道进行直连链路同步广播块重复传输。In combination with some embodiments of the first aspect. In some embodiments, the method further includes: the first transmission includes a direct link synchronization broadcast block, and a multi-channel access mechanism for accessing the multiple channels is determined according to a second transmission after the first transmission, or a first part of channels in the multiple channels where the second transmission exists after the first transmission is determined, and repeated transmission of the direct link synchronization broadcast block is determined in the first part of channels.

结合第一方面的一些实施例。在一些实施例中，所述方法还包括：确定用于接入所述第一部分信道的多信道接入机制包括所述第一多信道接入机制。In combination with some embodiments of the first aspect, in some embodiments, the method further comprises: determining that the multi-channel access mechanism used to access the first part of channels includes the first multi-channel access mechanism.

结合第一方面的一些实施例。在一些实施例中，所述方法还包括：当在所述第一部分信道进行直连链路同步广播块重复传输，所述第一部分信道包括不连续的信道，且所述第一终端不支持在不连续的信道上进行直连链路同步广播块重复传输，确定在所述不连续的信道之间的信道上进行直连链路同步广播块重复传输。In combination with some embodiments of the first aspect. In some embodiments, the method further includes: when performing repeated transmission of direct link synchronization broadcast blocks on the first part of the channels, the first part of the channels includes discontinuous channels, and the first terminal does not support repeated transmission of direct link synchronization broadcast blocks on discontinuous channels, determining to perform repeated transmission of direct link synchronization broadcast blocks on a channel between the discontinuous channels.

结合第一方面的一些实施例。在一些实施例中，所述第二传输包括以下至少之一：In combination with some embodiments of the first aspect. In some embodiments, the second transmission includes at least one of the following:

占用多个信道的物理直连链路信道；A physical direct link channel that occupies multiple channels;

占用一个信道的物理直连链路信道。A physical direct link channel occupies one channel.

结合第一方面的一些实施例。在一些实施例中，所述根据第一传输之后的第二传输确定用于接入所述多个信道的多信道接入机制，包括：确定所述多个信道中在所述第一传输之后存在所述第二传输的第一部分信道；根据所述第二传输确定用于接入所述第一部分信道的多信道接入机制。In combination with some embodiments of the first aspect. In some embodiments, determining a multi-channel access mechanism for accessing the multiple channels according to a second transmission after a first transmission comprises: determining a first portion of channels in the multiple channels where the second transmission exists after the first transmission; and determining a multi-channel access mechanism for accessing the first portion of channels according to the second transmission.

结合第一方面的一些实施例。在一些实施例中，所述根据所述第二传输确定用于接入所述第一部分信道的多信道接入机制，包括：所述第二传输包括占用多个信道的物理直连链路信道，确定用于接入所述第一部分信道的多信道接入机制为所述第一多信道接入机制。In combination with some embodiments of the first aspect. In some embodiments, the multi-channel access mechanism for accessing the first part of the channels is determined according to the second transmission, comprising: the second transmission includes a physical direct link channel occupying multiple channels, and the multi-channel access mechanism for accessing the first part of the channels is determined to be the first multi-channel access mechanism.

结合第一方面的一些实施例。在一些实施例中，所述根据所述第二传输确定用于接入所述第一部分信道的多信道接入机制，包括：所述第二传输包括占用一个信道的物理直连链路信道，确定用于接入所述多个信道的多信道接入机制为所述第二多信道接入机制。In combination with some embodiments of the first aspect. In some embodiments, the multi-channel access mechanism for accessing the first part of the channels is determined according to the second transmission, comprising: the second transmission includes a physical direct link channel occupying one channel, and the multi-channel access mechanism for accessing the multiple channels is determined to be the second multi-channel access mechanism.

结合第一方面的一些实施例。在一些实施例中，所述方法还包括：确定所述多个信道中在所述第一传输之后不存在所述第二传输的第二部分信道；根据所述第二部分信道中信道的数量确定用于接入所述第二部分信道的多信道接入机制。In combination with some embodiments of the first aspect. In some embodiments, the method further includes: determining a second portion of channels in the multiple channels where the second transmission does not exist after the first transmission; and determining a multi-channel access mechanism for accessing the second portion of channels based on the number of channels in the second portion of channels.

结合第一方面的一些实施例。在一些实施例中，所述根据所述第二部分信道中信道的数量确定用于接入所述第二部分信道的多信道接入机制，包括：所述第二部分信道中信道的数量为多个，确定用于接入所述第二部分信道的多信道接入机制包括所述第二多信道接入机制；其中，所述方法还包括：所述第二部分信道中信道的数量为一个，确定用于接入所述第二部分信道的信道接入机制包括单信道接入机制。In combination with some embodiments of the first aspect. In some embodiments, the multi-channel access mechanism for accessing the second part of channels according to the number of channels in the second part of channels comprises: the number of channels in the second part of channels is multiple, and the multi-channel access mechanism for accessing the second part of channels comprises the second multi-channel access mechanism; wherein the method further comprises: the number of channels in the second part of channels is one, and the channel access mechanism for accessing the second part of channels comprises a single-channel access mechanism.

结合第一方面的一些实施例。在一些实施例中，所述方法还包括以下至少之一：In combination with some embodiments of the first aspect. In some embodiments, the method further includes at least one of the following:

成功接入所述第一部分信道，在所述第一部分信道进行传输；successfully accessing the first part of channels and transmitting on the first part of channels;

成功接入所述第二部分信道，在所述第二部分信道进行传输。The second part of the channels is successfully accessed and transmission is performed on the second part of the channels.

结合第一方面的一些实施例。在一些实施例中，所述物理直连链路信道包括以下至少之一：物理直连链路控制信道；物理直连链路共享信道。 In combination with some embodiments of the first aspect, in some embodiments, the physical direct link channel includes at least one of the following: a physical direct link control channel; and a physical direct link shared channel.

结合第一方面的一些实施例。在一些实施例中，所述第二传输包括以下至少之一：所述第一终端发送的第二传输；第一终端以外的第二终端发送的第二传输，其中，所述第一终端与所述第二终端共享所述多个信道。In combination with some embodiments of the first aspect, in some embodiments, the second transmission includes at least one of the following: a second transmission sent by the first terminal; a second transmission sent by a second terminal other than the first terminal, wherein the first terminal and the second terminal share the multiple channels.

结合第一方面的一些实施例。在一些实施例中，所述第一传输之后的第二传输包括以下至少之一：与所述第一传输在时域上相邻的第二传输；与所述第一传输在时域上第一间隔小于间隔阈值的第二传输。In combination with some embodiments of the first aspect, in some embodiments, the second transmission after the first transmission includes at least one of the following: a second transmission adjacent to the first transmission in the time domain; a second transmission with a first interval in the time domain being less than an interval threshold.

结合第一方面的一些实施例。在一些实施例中，所述方法还包括：所述第一间隔大于16微秒，进行所述第二传输时进行信道占用时间恢复。In combination with some embodiments of the first aspect, in some embodiments, the method further comprises: when the first interval is greater than 16 microseconds, performing channel occupancy time recovery when performing the second transmission.

第二方面，本公开的实施例提出了一种通信方法，由第二终端执行，所述方法包括：在非授权频段的多个信道上通过直连链路与第一方面、第一方面的可选实施例中任一项所述的第一终端通信。In a second aspect, an embodiment of the present disclosure proposes a communication method, which is executed by a second terminal, and the method includes: communicating with the first terminal described in any one of the first aspect and the optional embodiments of the first aspect through a direct link on multiple channels in an unlicensed frequency band.

第三方面，本公开的实施例提出了一种终端，包括：一个或多个处理器；其中，所述终端用于执行第一方面、第一方面的可选实施例中任一项所述的信道接入方法。In a third aspect, an embodiment of the present disclosure proposes a terminal, comprising: one or more processors; wherein the terminal is used to execute the channel access method described in any one of the first aspect and the optional embodiments of the first aspect.

第四方面，本公开的实施例提出了一种终端，包括：一个或多个处理器；其中，所述终端用于执行第二方面所述的通信方法。In a fourth aspect, an embodiment of the present disclosure proposes a terminal, comprising: one or more processors; wherein the terminal is used to execute the communication method described in the second aspect.

第五方面，本公开的实施例提出了一种通信系统，包括第一终端和第二终端，其中，所述第一终端被配置为实现第一方面、第一方面的可选实施例中任一项所述的信道接入方法，所述第二终端被配置为实现第二方面所述的通信方法。In a fifth aspect, an embodiment of the present disclosure proposes a communication system, comprising a first terminal and a second terminal, wherein the first terminal is configured to implement the channel access method described in any one of the first aspect and the optional embodiments of the first aspect, and the second terminal is configured to implement the communication method described in the second aspect.

第六方面，本公开的实施例提出了一种存储介质，所述存储介质存储有指令，当所述指令在通信设备上运行时，使得所述通信设备执行第一方面、第一方面的可选实施例中任一项所述的信道接入方法，和/或第二方面所述的通信方法。In the sixth aspect, an embodiment of the present disclosure proposes a storage medium, which stores instructions. When the instructions are executed on a communication device, the communication device executes the channel access method described in any one of the first aspect, the optional embodiments of the first aspect, and/or the communication method described in the second aspect.

第七方面，本公开实施例提出了程序产品，上述程序产品被通信设备执行时，使得上述通信设备执行第一方面、第二方面、第一方面的可选实施例中任一项所描述的方法。In a seventh aspect, an embodiment of the present disclosure proposes a program product. When the program product is executed by a communication device, the communication device executes the method described in the first aspect, the second aspect, or any one of the optional embodiments of the first aspect.

第八方面，本公开实施例提出了计算机程序，当其在计算机上运行时，使得计算机执行第一方面、第二方面、第一方面的可选实施例中任一项所描述的方法。In an eighth aspect, an embodiment of the present disclosure proposes a computer program, which, when executed on a computer, enables the computer to execute the method described in the first aspect, the second aspect, or any one of the optional embodiments of the first aspect.

可以理解地，上述终端、通信系统、存储介质、程序产品、计算机程序均用于执行本公开实施例所提出的方法。因此，其所能达到的有益效果可以参考对应方法中的有益效果，此处不再赘述。It is understandable that the above-mentioned terminal, communication system, storage medium, program product, and computer program are all used to execute the method proposed in the embodiment of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects in the corresponding method, which will not be repeated here.

本公开实施例提出了信道接入方法、通信方法、终端和存储介质。在一些实施例中，信道接入方法与信息处理方法、通信方法等术语可以相互替换，终端与信息处理装置、通信装置等术语可以相互替换，信息处理系统、通信系统等术语可以相互替换。The embodiments of the present disclosure provide a channel access method, a communication method, a terminal, and a storage medium. In some embodiments, the terms such as channel access method, information processing method, and communication method can be interchangeable, the terms such as terminal, information processing device, and communication device can be interchangeable, and the terms such as information processing system and communication system can be interchangeable.

本公开实施例并非穷举，仅为部分实施例的示意，不作为对本公开保护范围的具体限制。在不矛盾的情况下，某一实施例中的每个步骤均可以作为独立实施例来实施，且各步骤之间可以任意组合，例如，在某一实施例中去除部分步骤后的方案也可以作为独立实施例来实施，且在某一实施例中各步骤的顺序可以任意交换，另外，某一实施例中的可选实现方式可以任意组合；此外，各实施例之间可以任意组合，例如，不同实施例的部分或全部步骤可以任意组合，某一实施例可以与其他实施例的可选实现方式任意组合。The embodiments of the present disclosure are not exhaustive, but are only illustrative of some embodiments, and are not intended to be a specific limitation on the scope of protection of the present disclosure. In the absence of contradiction, each step in a certain embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a certain embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment can be arbitrarily exchanged. In addition, the optional implementation methods in a certain embodiment can be arbitrarily combined; in addition, the embodiments can be arbitrarily combined, for example, some or all of the steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

在各本公开实施例中，如果没有特殊说明以及逻辑冲突，各实施例之间的术语和 /或描述具有一致性，且可以互相引用，不同实施例中的技术特征根据其内在的逻辑关系可以组合形成新的实施例。In each embodiment of the present disclosure, if there is no special explanation and logical conflict, the terms and /or descriptions are consistent and can be referenced to each other, and the technical features in different embodiments can be combined to form new embodiments according to their internal logical relationships.

本公开实施例中所使用的术语只是为了描述特定实施例的目的，而并非作为对本公开的限制。The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

在本公开实施例中，除非另有说明，以单数形式表示的元素，如“一个”、“一种”、“该”、“上述”、“所述”、“前述”、“这一”等，可以表示“一个且只有一个”，也可以表示“一个或多个”、“至少一个”等。In the embodiments of the present disclosure, unless otherwise specified, elements expressed in the singular form, such as "one", "an", "the", "above", "said", "foregoing", "this", etc., may mean "one and only one", or may mean "one or more", "at least one", etc.

例如，在翻译中使用如英语中的“a”、“an”、“the”等冠词(article)的情况下，冠词之后的名词可以理解为单数表达形式，也可以理解为复数表达形式。For example, when using articles such as "a", "an", "the" in English in translation, the noun following the article can be understood as a singular expression or a plural expression.

在本公开实施例中，“多个”是指两个或两个以上。In the embodiments of the present disclosure, “plurality” refers to two or more.

在一些实施例中，“至少一者(至少一项、至少一个)(at least one of)”、“一个或多个(one or more)”、“多个(a plurality of)”、“多个(multiple)等术语可以相互替换。In some embodiments, the terms "at least one of", "one or more", "a plurality of", "multiple", etc. can be used interchangeably.

在一些实施例中，“A、B中的至少一者”、“A和/或B”、“在一情况下A，在另一情况下B”、“响应于一情况A，响应于另一情况B”等记载方式，根据情况可以包括以下技术方案：在一些实施例中A(与B无关地执行A)；在一些实施例中B(与A无关地执行B)；在一些实施例中从A和B中选择执行(A和B被选择性执行)；在一些实施例中A和B(A和B都被执行)。当有A、B、C等更多分支时也类似上述。In some embodiments, "at least one of A and B", "A and/or B", "A in one case, B in another case", "in response to one case A, in response to another case B", etc., may include the following technical solutions according to the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); in some embodiments, A and B (both A and B are executed). When there are more branches such as A, B, C, etc., the above is also similar.

在一些实施例中，“A或B”等记载方式，根据情况可以包括以下技术方案：在一些实施例中A(与B无关地执行A)；在一些实施例中B(与A无关地执行B)；在一些实施例中从A和B中选择执行(A和B被选择性执行)。当有A、B、C等更多分支时也类似上述。In some embodiments, the recording method of "A or B" may include the following technical solutions according to the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). When there are more branches such as A, B, C, etc., the above is also similar.

本公开实施例中的“第一”、“第二”等前缀词，仅仅为了区分不同的描述对象，不对描述对象的位置、顺序、优先级、数量或内容等构成限制，对描述对象的陈述参见权利要求或实施例中上下文的描述，不应因为使用前缀词而构成多余的限制。The prefixes such as "first" and "second" in the embodiments of the present disclosure are only for distinguishing different description objects and do not constitute any restrictions on the position, order, priority, quantity or content of the description objects. For the statement of the description objects, please refer to the description in the context of the claims or embodiments, and no unnecessary restrictions should be constituted due to the use of prefixes.

例如，描述对象为“字段”，则“第一字段”和“第二字段”中“字段”之前的序数词并不限制“字段”之间的位置或顺序，“第一”和“第二”并不限制其修饰的“字段”是否在同一个消息中，也不限制“第一字段”和“第二字段”的先后顺序。再如，描述对象为“等级”，则“第一等级”和“第二等级”中“等级”之前的序数词并不限制“等级”之间的优先级。再如，描述对象的数量并不受序数词的限制，可以是一个或者多个，以“第一装置”为例，其中“装置”的数量可以是一个或者多个。此外，不同前缀词修饰的对象可以相同或不同，例如，描述对象为“装置”，则“第一装置”和“第二装置”可以是相同的装置或者不同的装置，其类型可以相同或不同；再如，描述对象为“信息”，则“第一传输”和“第二传输”可以是相同的信息或者不同的信息，其内容可以相同或不同。For example, if the description object is "field", the ordinal number before "field" in "first field" and "second field" does not limit the position or order between "fields", "first" and "second" do not limit whether the "fields" they modify are in the same message, nor do they limit the order of "first field" and "second field". For another example, if the description object is "level", the ordinal number before "level" in "first level" and "second level" does not limit the priority between "levels". For another example, the number of description objects is not limited by ordinal numbers and can be one or more. For example, "first device" can be one or more. In addition, the objects modified by different prefixes can be the same or different. For example, if the description object is "device", "first device" and "second device" can be the same device or different devices, and their types can be the same or different; for another example, if the description object is "information", "first transmission" and "second transmission" can be the same information or different information, and their contents can be the same or different.

在一些实施例中，“包括A”、“包含A”、“用于指示A”、“携带A”，可以解释为直接携带A，也可以解释为间接指示A。In some embodiments, “including A”, “comprising A”, “used to indicate A”, and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

在一些实施例中，“响应于……”、“响应于确定……”、“在……的情况下”、“在……时”、“当……时”、“若……”、“如果……”等术语可以相互替换。In some embodiments, terms such as "in response to ...", "in response to determining ...", "in the case of ...", "at the time of ...", "when ...", "if ...", "if ...", etc. can be used interchangeably.

在一些实施例中，“大于”、“大于或等于”、“不小于”、“多于”、“多于或等于”、“不少于”、“高于”、“高于或等于”、“不低于”、“以上”等术语可以相互替换，“小于”、“小于或等于”、“不大于”、“少于”、“少于或等于”、“不多于”、“低于”、“低于或等于”、“不高于”、“以下”等术语可以相互替换。In some embodiments, the terms “greater than,” “greater than or equal to,” “not less than,” “more than,” “more than or equal to,” “not less than,” “higher than,” “higher than or equal to,” “not less than,” and “above” may be used. The terms "less than", "less than or equal to", "not greater than", "less than", "less than or equal to", "no more than", "lower than", "lower than or equal to", "not higher than", "below" and the like can be used interchangeably.

在一些实施例中，装置等可以解释为实体的、也可以解释为虚拟的，其名称不限定于实施例中所记载的名称，“装置”、“设备(equipment)”、“设备(device)”、“电路”、“网元”、“节点”、“功能”、“单元”、“部件(section)”、“系统”、“网络”、“芯片”、“芯片系统”、“实体”、“主体”等术语可以相互替换。In some embodiments, devices, etc. can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. Terms such as "device", "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", and "subject" can be used interchangeably.

在一些实施例中，“网络”可以解释为网络中包含的装置(例如，接入网设备、核心网设备等)。In some embodiments, "network" may be interpreted as devices included in the network (eg, access network equipment, core network equipment, etc.).

在一些实施例中，“接入网设备(access network device，AN device)”、“无线接入网设备(radio access network device，RAN device)”、“基站(base station，BS)”、“无线基站(radio base station)”、“固定台(fixed station)”、“节点(node)”、“接入点(access point)”、“发送点(transmission point，TP)”、“接收点(reception point，RP)”、“发送接收点(transmission/reception point，TRP)”、“面板(panel)”、“天线面板(antenna panel)”、“天线阵列(antenna array)”、“小区(cell)”、“宏小区(macro cell)”、“小型小区(small cell)”、“毫微微小区(femto cell)”、“微微小区(pico cell)”、“扇区(sector)”、“小区组(cell group)”、“服务小区”、“载波(carrier)”、“分量载波(component carrier)”、“带宽部分(bandwidth part，BWP)”等术语可以相互替换。In some embodiments, the terms "access network device (AN device), "radio access network device (RAN device)", "base station (BS)", "radio base station (radio base station)", "fixed station (fixed station)", "node", "access point (access point)", "transmission point (TP)", "reception point (RP)", "transmission/reception point (TRP)", "panel", "antenna panel (antenna panel)", "antenna array (antenna array)", "cell", "macro cell", "small cell (small cell)", "femto cell (femto cell)", "pico cell (pico cell)", "sector (sector)", "cell group (cell)", "serving cell", "carrier (carrier)", "component carrier (component carrier)", "bandwidth part (bandwidth part (BWP))" and so on can be used interchangeably.

在一些实施例中，“终端(terminal)”、“终端设备(terminal device)”、“用户设备(user equipment，UE)”、“用户终端(user terminal)”、“移动台(mobile station，MS)”、“移动终端(mobile terminal，MT)”、订户站(subscriber station)、移动单元(mobile unit)、订户单元(subscriber unit)、无线单元(wireless unit)、远程单元(remote unit)、移动设备(mobile device)、无线设备(wireless device)、无线通信设备(wireless communication device)、远程设备(remote device)、移动订户站(mobile subscriber station)、接入终端(access terminal)、移动终端(mobile terminal)、无线终端(wireless terminal)、远程终端(remote terminal)、手持设备(handset)、用户代理(user agent)、移动客户端(mobile client)、客户端(client)等术语可以相互替换。In some embodiments, the terms "terminal", "terminal device", "user equipment (UE)", "user terminal" "mobile station (MS)", "mobile terminal (MT)", subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client and the like can be used interchangeably.

在一些实施例中，接入网设备、核心网设备、或网络设备可以被替换为终端。例如，针对将接入网设备、核心网设备、或网络设备以及终端间的通信置换为多个终端间的通信(例如，设备对设备(device-to-device，D2D)、车联网(vehicle-to-everything，V2X)等)的结构，也可以应用本公开的各实施例。在该情况下，也可以设为终端具有接入网设备所具有的全部或部分功能的结构。此外，“上行”、“下行”等术语也可以被替换为与终端间通信对应的术语(例如，“侧行(side)”)。例如，上行信道、下行信道等可以被替换为侧行信道，上行链路、下行链路等可以被替换为侧行链路。In some embodiments, the access network device, the core network device, or the network device can be replaced by a terminal. For example, the various embodiments of the present disclosure can also be applied to a structure in which the access network device, the core network device, or the network device and the communication between the terminals is replaced by the communication between multiple terminals (for example, device-to-device (D2D), vehicle-to-everything (V2X), etc.). In this case, it can also be set as a structure in which the terminal has all or part of the functions of the access network device. In addition, terms such as "uplink" and "downlink" can also be replaced by terms corresponding to communication between terminals (for example, "side"). For example, uplink channels, downlink channels, etc. can be replaced by side channels, and uplinks, downlinks, etc. can be replaced by side links.

在一些实施例中，终端可以被替换为接入网设备、核心网设备、或网络设备。在该情况下，也可以设为接入网设备、核心网设备、或网络设备具有终端所具有的全部或部分功能的结构。In some embodiments, the terminal may be replaced by an access network device, a core network device, or a network device. In this case, the access network device, the core network device, or the network device may also be configured to have a structure that has all or part of the functions of the terminal.

在一些实施例中，获取数据、信息等可以遵照所在地国家的法律法规。In some embodiments, acquisition of data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

在一些实施例中，可以在得到用户同意后获取数据、信息等。In some embodiments, data, information, etc. may be obtained with the user's consent.

此外，本公开实施例的表格中的每一元素、每一行、或每一列均可以作为独立实施例来实施，任意元素、任意行、任意列的组合也可以作为独立实施例来实施。In addition, each element, each row, or each column in the table of the embodiments of the present disclosure may be implemented as an independent embodiment, and the combination of any elements, any rows, and any columns may also be implemented as an independent embodiment.

图1是根据本公开实施例示出的通信系统的架构示意图。 FIG1 is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure.

如图1所示，通信系统100包括第一终端(terminal)101和第二终端102，其中，第一终端和第二终端可以通过直连链路通信，进一步地，第一终端和第二终端可以在非授权频段的一个或多个信道上通过直连链路通信。As shown in FIG1 , a communication system 100 includes a first terminal 101 and a second terminal 102 , wherein the first terminal and the second terminal can communicate via a direct link, and further, the first terminal and the second terminal can communicate via a direct link on one or more channels in an unlicensed frequency band.

在一些实施例中，第一终端和第二终端也可以与网络设备通信，例如，网络设备包括以下至少之一：接入网设备、核心网设备(core network device)。In some embodiments, the first terminal and the second terminal may also communicate with a network device, for example, the network device includes at least one of the following: an access network device, a core network device (core network device).

在一些实施例中，第一终端101和第二终端102例如包括手机(mobile phone)、可穿戴设备、物联网设备、具备通信功能的汽车、智能汽车、平板电脑(Pad)、带无线收发功能的电脑、虚拟现实(virtual reality，VR)终端设备、增强现实(augmented reality，AR)终端设备、工业控制(industrial control)中的无线终端设备、无人驾驶(self-driving)中的无线终端设备、远程手术(remote medical surgery)中的无线终端设备、智能电网(smart grid)中的无线终端设备、运输安全(transportation safety)中的无线终端设备、智慧城市(smart city)中的无线终端设备、智慧家庭(smart home)中的无线终端设备中的至少一者，但不限于此。In some embodiments, the first terminal 101 and the second terminal 102 include, for example, a mobile phone, a wearable device, an Internet of Things device, a car with communication function, a smart car, a tablet computer (Pad), a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control (industrial control), a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid (smart grid), a wireless terminal device in transportation safety (transportation safety), a wireless terminal device in a smart city (smart city), and at least one of a wireless terminal device in a smart home (smart home), but are not limited to these.

在一些实施例中，接入网设备例如是将终端接入到无线网络的节点或设备，接入网设备可以包括5G通信系统中的演进节点B(evolved NodeB，eNB)、下一代演进节点B(next generation eNB，ng-eNB)、下一代节点B(next generation NodeB，gNB)、节点B(node B，NB)、家庭节点B(home node B，HNB)、家庭演进节点B(home evolved nodeB，HeNB)、无线回传设备、无线网络控制器(radio network controller，RNC)、基站控制器(base station controller，BSC)、基站收发台(base transceiver station，BTS)、基带单元(base band unit，BBU)、移动交换中心、6G通信系统中的基站、开放型基站(Open RAN)、云基站(Cloud RAN)、其他通信系统中的基站、Wi-Fi系统中的接入节点中的至少一者，但不限于此。In some embodiments, the access network device is, for example, a node or device that accesses a terminal to a wireless network. The access network device may include an evolved Node B (eNB), a next generation evolved Node B (ng-eNB), a next generation Node B (gNB), a node B (NB), a home node B (HNB), a home evolved node B (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an open base station (Open RAN), a cloud base station (Cloud RAN), a base station in other communication systems, and at least one of an access node in a Wi-Fi system, but is not limited thereto.

在一些实施例中，核心网设备可以是一个设备，包括一个或多个网元，也可以是多个设备或设备群，分别包括上述一个或多个网元中的全部或部分。网元可以是虚拟的，也可以是实体的。核心网例如包括演进分组核心(Evolved Packet Core，EPC)、5G核心网络(5G Core Network，5GCN)、下一代核心(Next Generation Core，NGC)中的至少一者。In some embodiments, the core network device may be a device including one or more network elements, or may be multiple devices or device groups, each including all or part of the one or more network elements. The network element may be virtual or physical. The core network may include, for example, at least one of the Evolved Packet Core (EPC), the 5G Core Network (5GCN), and the Next Generation Core (NGC).

在一些实施例中，本公开的技术方案可适用于Open RAN架构，此时，本公开实施例所涉及的接入网设备间或者接入网设备内的接口可变为Open RAN的内部接口，这些内部接口之间的流程和信息交互可以通过软件或者程序实现。In some embodiments, the technical solution of the present disclosure may be applicable to the Open RAN architecture. In this case, the interfaces between access network devices or within access network devices involved in the embodiments of the present disclosure may become internal interfaces of Open RAN, and the processes and information interactions between these internal interfaces may be implemented through software or programs.

在一些实施例中，接入网设备可以由集中单元(central unit，CU)与分布式单元(distributed unit，DU)组成的，其中，CU也可以称为控制单元(control unit)，采用CU-DU的结构可以将接入网设备的协议层拆分开，部分协议层的功能放在CU集中控制，剩下部分或全部协议层的功能分布在DU中，由CU集中控制DU，但不限于此。In some embodiments, the access network device may be composed of a centralized unit (central unit, CU) and a distributed unit (distributed unit, DU), wherein the CU may also be called a control unit (control unit). The CU-DU structure may be used to split the protocol layer of the access network device, with some functions of the protocol layer being centrally controlled by the CU, and the remaining part or all of the functions of the protocol layer being distributed in the DU, and the DU being centrally controlled by the CU, but not limited to this.

可以理解的是，本公开实施例描述的通信系统是为了更加清楚的说明本公开实施例的技术方案，并不构成对于本公开实施例提出的技术方案的限定，本领域普通技术人员可知，随着系统架构的演变和新业务场景的出现，本公开实施例提出的技术方案对于类似的技术问题同样适用。It can be understood that the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution proposed in the embodiment of the present disclosure. A person of ordinary skill in the art can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution proposed in the embodiment of the present disclosure is also applicable to similar technical problems.

下述本公开实施例可以应用于图1所示的通信系统100、或部分主体，但不限于此。图1所示的各主体是例示，通信系统可以包括图1中的全部或部分主体，也可以包括图1以外的其他主体，各主体数量和形态为任意，各主体可以是实体的也可以是虚拟的，各主体之间的连接关系是例示，各主体之间可以不连接也可以连接，其连接可以是任意方式，可以是直接连接也可以是间接连接，可以是有线连接也可以是无线连接。The following embodiments of the present disclosure may be applied to the communication system 100 shown in FIG1 , or part of the subject, but are not limited thereto. The subjects shown in FIG1 are examples, and the communication system may include all or part of the subjects in FIG1 , and may also include other subjects other than FIG1 , the number and form of each subject are arbitrary, each subject may be physical or virtual, and the connection relationship between the subjects is an example, and the subjects may be connected or disconnected, and the connection may be Any method, it can be direct connection or indirect connection, it can be wired connection or wireless connection.

本公开各实施例可以应用于长期演进(Long Term Evolution，LTE)、LTE-Advanced(LTE-A)、LTE-Beyond(LTE-B)、SUPER 3G、IMT-Advanced、第四代移动通信系统(4th generation mobile communication system，4G)、)、第五代移动通信系统(5th generation mobile communication system，5G)、5G新空口(new radio，NR)、未来无线接入(Future Radio Access，FRA)、新无线接入技术(New-Radio Access Technology，RAT)、新无线(New Radio，NR)、新无线接入(New radio access，NX)、未来一代无线接入(Future generation radio access，FX)、Global System for Mobile communications(GSM(注册商标))、CDMA2000、超移动宽带(Ultra Mobile Broadband，UMB)、IEEE 802.11(Wi-Fi(注册商标))、IEEE 802.16(WiMAX(注册商标))、IEEE 802.20、超宽带(Ultra-WideBand，UWB)、蓝牙(Bluetooth(注册商标))、陆上公用移动通信网(Public Land Mobile Network，PLMN)网络、设备到设备(Device-to-Device，D2D)系统、机器到机器(Machine to Machine，M2M)系统、物联网(Internet of Things，IoT)系统、车联网(Vehicle-to-Everything，V2X)、利用其他通信方法的系统、基于它们而扩展的下一代系统等。此外，也可以将多个系统组合(例如，LTE或者LTE-A与5G的组合等)应用。The embodiments of the present disclosure may be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, the fourth generation mobile communication system (4G), the fifth generation mobile communication system (5G), 5G new radio (NR), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New radio access (NX), Future generation radio access ... The present invention relates to wireless communication systems such as LTE, Wi-Fi (X), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), Public Land Mobile Network (PLMN) network, Device to Device (D2D) system, Machine to Machine (M2M) system, Internet of Things (IoT) system, Vehicle to Everything (V2X), systems using other communication methods, and next-generation systems expanded based on them. In addition, a combination of multiple systems (for example, a combination of LTE or LTE-A with 5G, etc.) may also be applied.

如图2所示，所述通信方法包括：As shown in FIG2 , the communication method includes:

步骤S201，第一终端通过多信道接入机制接入多个信道。Step S201: A first terminal accesses multiple channels through a multi-channel access mechanism.

在一些实施例中，多个信道为非授权频段中的多个信道。In some embodiments, the plurality of channels are a plurality of channels in an unlicensed frequency band.

在一些实施例中，对多个信道的信道接入过程基于第一终端在直连链路的第一传输触发。In some embodiments, the channel access process to the plurality of channels is triggered based on a first transmission by the first terminal on the direct link.

在一些实施例中，所述多信道接入机制包括以下至少之一：第一多信道接入机制；第二多信道接入机制。In some embodiments, the multi-channel access mechanism includes at least one of the following: a first multi-channel access mechanism; a second multi-channel access mechanism.

在一些实施例中，所述第一多信道接入机制包括：直连链路传输的多信道接入机制。In some embodiments, the first multi-channel access mechanism includes: a multi-channel access mechanism for direct link transmission.

在一些实施例中，所述第二多信道接入机制包括以下至少之一：In some embodiments, the second multi-channel access mechanism includes at least one of the following:

用于直连链路同步广播块的类型B2多信道接入机制。Type B2 multi-channel access mechanism for direct link synchronization broadcast blocks.

在一些实施例中，所述第一传输包括以下至少之一：物理直连链路反馈信道；直连链路同步广播块。In some embodiments, the first transmission includes at least one of: a physical direct link feedback channel; a direct link synchronization broadcast block.

在一些实施例中，在第一传输包括直连链路同步广播块的情况下，第一终端根据所述第一传输之后的第二传输确定用于接入所述多个信道的多信道接入机制。In some embodiments, when the first transmission includes a direct link synchronization broadcast block, the first terminal A second transmission subsequent to the first transmission determines a multi-channel access mechanism for accessing the plurality of channels.

在一些实施例中，在确定所述多个信道中在所述第一传输之后存在所述第二传输的第一部分信道的情况下，第一终端确定在所述第一部分信道进行直连链路同步广播块重复传输。In some embodiments, upon determining that a first portion of channels for the second transmission exists after the first transmission in the plurality of channels, the first terminal determines to perform repeated transmission of direct link synchronization broadcast blocks in the first portion of channels.

在一些实施例中，第一终端确定用于接入所述第一部分信道的多信道接入机制包括所述第一多信道接入机制。In some embodiments, the multi-channel access mechanism determined by the first terminal for accessing the first portion of channels includes the first multi-channel access mechanism.

在一些实施例中，当在所述第一部分信道进行直连链路同步广播块重复传输，所述第一部分信道包括不连续的信道，且所述第一终端不支持在不连续的信道上进行直连链路同步广播块重复传输，第一终端确定在所述不连续的信道之间的信道上进行直连链路同步广播块重复传输。In some embodiments, when direct link synchronization broadcast block repetition transmission is performed on the first part of the channel, the first part of the channel includes discontinuous channels, and the first terminal does not support direct link synchronization broadcast block repetition transmission on discontinuous channels, the first terminal determines to perform direct link synchronization broadcast block repetition transmission on the channel between the discontinuous channels.

在一些实施例中，所述第二传输包括以下至少之一：In some embodiments, the second transmission includes at least one of the following:

在一些实施例中，第一终端确定所述多个信道中在所述第一传输之后存在所述第二传输的第一部分信道；根据所述第二传输确定用于接入所述第一部分信道的多信道接入机制。In some embodiments, the first terminal determines a first portion of channels among the multiple channels where the second transmission exists after the first transmission; and determines a multi-channel access mechanism for accessing the first portion of channels according to the second transmission.

在一些实施例中，在所述第二传输包括占用多个信道的物理直连链路信道的情况下，第一终端确定用于接入所述第一部分信道的多信道接入机制为所述第一多信道接入机制。In some embodiments, when the second transmission includes a physical direct link channel occupying multiple channels, the first terminal determines that a multi-channel access mechanism used to access the first part of channels is the first multi-channel access mechanism.

在一些实施例中，在所述第二传输包括占用一个信道的物理直连链路信道的情况下，第一终端确定用于接入所述多个信道的多信道接入机制为所述第二多信道接入机制。In some embodiments, when the second transmission includes a physical direct link channel occupying one channel, the first terminal determines that the multi-channel access mechanism used to access the multiple channels is the second multi-channel access mechanism.

在一些实施例中，第一终端确定所述多个信道中在所述第一传输之后不存在所述第二传输的第二部分信道；根据所述第二部分信道中信道的数量确定用于接入所述第二部分信道的多信道接入机制。In some embodiments, the first terminal determines that a second portion of channels of the multiple channels does not exist for the second transmission after the first transmission; and determines a multi-channel access mechanism for accessing the second portion of channels based on the number of channels in the second portion of channels.

在一些实施例中，在所述第二部分信道中信道的数量为多个的情况下，第一终端确定用于接入所述第二部分信道的多信道接入机制包括所述第二多信道接入机制。In some embodiments, when the number of channels in the second part of channels is plural, the first terminal determines that a multi-channel access mechanism for accessing the second part of channels includes the second multi-channel access mechanism.

在一些实施例中，在所述第二部分信道中信道的数量为一个的情况下，第一终端确定用于接入所述第二部分信道的信道接入机制包括单信道接入机制。In some embodiments, when the number of channels in the second part of channels is one, the first terminal determines that the channel access mechanism for accessing the second part of channels includes a single channel access mechanism.

在一些实施例中，所述方法还包括以下至少之一：In some embodiments, the method further comprises at least one of the following:

在一些实施例中，所述物理直连链路信道包括以下至少之一：In some embodiments, the physical direct link channel includes at least one of the following:

物理直连链路控制信道；Physical direct link control channel;

物理直连链路共享信道。Physical direct links share the channel.

所述第一终端发送的第二传输；a second transmission sent by the first terminal;

第一终端以外的第二终端发送的第二传输，其中，所述第一终端与所述第二终端共享所述多个信道。A second transmission sent by a second terminal other than the first terminal, wherein the first terminal and the second terminal The plurality of channels are shared.

在一些实施例中，所述第一传输之后的第二传输包括以下至少之一：In some embodiments, the second transmission after the first transmission includes at least one of the following:

与所述第一传输在时域上相邻的第二传输；a second transmission adjacent to the first transmission in the time domain;

与所述第一传输在时域上第一间隔小于间隔阈值的第二传输。A second transmission having a first interval in the time domain with respect to the first transmission being less than an interval threshold.

在一些实施例中，在第一间隔大于16微秒的情况，第一终端进行所述第二传输时进行信道占用时间恢复。In some embodiments, when the first interval is greater than 16 microseconds, the first terminal performs channel occupancy time recovery when performing the second transmission.

步骤S202，第一终端在接入的多个信道上通过直连链路与第二终端进行通信。Step S202: The first terminal communicates with the second terminal through a direct link on multiple accessed channels.

本公开实施例所涉及的通信方法可以包括步骤S201～步骤S202中的至少一者。例如，步骤S201可以作为独立实施例来实施，步骤S202可以作为独立实施例来实施，但不限于此。The communication method involved in the embodiment of the present disclosure may include at least one of step S201 to step S202. For example, step S201 may be implemented as an independent embodiment, and step S202 may be implemented as an independent embodiment, but is not limited thereto.

在一些实施例中，步骤S201、S202可以交换顺序或同时执行。In some embodiments, steps S201 and S202 may be performed in an interchangeable order or simultaneously.

在一些实施例中，步骤S201是可选的，在不同实施例中可以对这些步骤中的一个或多个步骤进行省略或替代。In some embodiments, step S201 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

在一些实施例中，步骤S202是可选的，在不同实施例中可以对这些步骤中的一个或多个步骤进行省略或替代。In some embodiments, step S202 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

在一些实施例中，可参见图2所对应的说明书之前或之后记载的其他可选实现方式。In some embodiments, reference may be made to other optional implementations recorded before or after the description corresponding to FIG. 2 .

在一些实施例中，终端之间可以在非授权(Unlicensed)频段上通过直连链路(sidelink，SL)进行通信，例如第一终端可以与第二终端在非授权频段上通过直连链路通信，可以简称为SL-U(sidelink Unlicensed)。In some embodiments, terminals can communicate with each other through a direct link (sidelink, SL) in an unlicensed frequency band. For example, a first terminal can communicate with a second terminal through a direct link in an unlicensed frequency band, which can be referred to as SL-U (sidelink Unlicensed).

终端在接入非授权频段中的信道前，需要先对信道进行监听以确定信道是否空闲，其中，监听方式包括但不限于先听后说(Listen Before Talk，LBT)。在确定信道空闲的情况下，才能接入信道进行通信。Before accessing a channel in an unlicensed frequency band, a terminal needs to monitor the channel to determine whether it is idle. The monitoring method includes but is not limited to Listen Before Talk (LBT). Only when the channel is determined to be idle can the terminal access the channel for communication.

在一些实施例中，一个信道可以对应一个资源块集合(RB(Resource Block)set)，多个信道则对应多个资源块集合。In some embodiments, one channel may correspond to one resource block set (RB (Resource Block) set), and multiple channels may correspond to multiple resource block sets.

在一些实施例中，终端在进行一些传输时，需要占用非授权频段中的多个信道，而关于多信道接入机制，可以包括第一多信道接入机制和第二多频道接入机制。In some embodiments, when performing some transmissions, the terminal needs to occupy multiple channels in the unlicensed frequency band, and the multi-channel access mechanism may include a first multi-channel access mechanism and a second multi-channel access mechanism.

其中，基于第一多信道接入机制进行多信道接入，终端对多个信道进行监听，并确定多个信道都空闲的情况下，终端才能接入多个信道，并在多个信道上进行传输，否则，在多个信道中任一信道非空闲(也即繁忙)的情况下，终端都不能接入多个信道，而需要继续对这多个信道进行监听。另外，关于无线网络中基站与终端的通信，可以在非授权频段进行基站和终端通信(例如NR-U(New Radio Unlicensed，新空口非授权频段))，上述第一多信道机制被用于上行传输中占用多个信道的发送。Among them, multi-channel access is performed based on the first multi-channel access mechanism. The terminal monitors multiple channels and determines that multiple channels are idle. Only then can the terminal access multiple channels and transmit on multiple channels. Otherwise, if any of the multiple channels is not idle (that is, busy), the terminal cannot access multiple channels and needs to continue to monitor these multiple channels. In addition, regarding the communication between the base station and the terminal in the wireless network, the base station and the terminal can communicate in an unlicensed frequency band (for example, NR-U (New Radio Unlicensed), and the above-mentioned first multi-channel mechanism is used for the transmission of multiple channels in the uplink transmission.

而基于第二多信道接入机制，终端对多个信道进行监听，在确定多个信道中部分信道空闲的情况下，终端就可以接入空闲的部分信道，并在接入的部分信道上进行传输，而不必在多个信道都空闲的情况才接入信道。另外，关于无线网络中基站与终端的通信，可以在非授权频段进行基站和终端通信(例如NR-U(New Radio Unlicensed，新空口非授权频段))，上述第二多信道机制被用于下行传输中占用多个信道的发送。Based on the second multi-channel access mechanism, the terminal monitors multiple channels. When it is determined that some of the multiple channels are idle, the terminal can access some of the idle channels and transmit on the accessed channels, without having to access the channels when multiple channels are idle. In addition, regarding the communication between base stations and terminals in wireless networks, base stations and terminals can communicate in unlicensed frequency bands (such as NR-U (New Radio Unlicensed), and the above-mentioned second multi-channel mechanism is used for transmission that occupies multiple channels in downlink transmission.

可见，相对于第一多信道接入机制，第二多信道接入机制的接入条件更为宽松，也即相较于通过第一多信道接入机制进行多信道接入，终端通过第二多信道接入机制进行多信道接入，更容易接入信道，以便保证通信操作及时进行。It can be seen that compared with the first multi-channel access mechanism, the access conditions of the second multi-channel access mechanism are more relaxed. That is, compared with multi-channel access through the first multi-channel access mechanism, the terminal can more easily access the channel through the second multi-channel access mechanism to ensure that the communication operation is carried out in a timely manner.

在一些实施例中，终端需要占用非授权频段中多个信道进行的直连链路传输，包括以下至少之一：In some embodiments, the terminal needs to occupy multiple channels in the unlicensed frequency band for direct link transmission, including at least one of the following:

在多个信道上传输物理直连链路控制信道(Physical Sidelink Control Channel，PSCCH)；Transmitting the Physical Sidelink Control Channel (PSCCH) on multiple channels;

在多个信道上传输物理直连链路共享信道(Physical Sidelink Shared Channel，PSSCH)；Transmitting Physical Sidelink Shared Channel (PSSCH) on multiple channels;

在多个信道上传输物理直连链路反馈信道(Physical Sidelink Feedback Channel，PSFCH)；Transmitting the Physical Sidelink Feedback Channel (PSFCH) on multiple channels;

在多个信道上传输直连链路同步广播块(Sidelink Synchronization Signal/PBCH(Physical Broadcast Channel，物理广播信道)Block，S-SSB)。The direct link synchronization broadcast block (Sidelink Synchronization Signal/PBCH (Physical Broadcast Channel) Block, S-SSB) is transmitted on multiple channels.

在一些实施例中，对于PSCCH、PSSCH传输，可以是单次传输占用多个信道。In some embodiments, for PSCCH and PSSCH transmissions, a single transmission may occupy multiple channels.

在一些实施例中，对于PSFCH传输，可以是多个PSFCH占用多个信道，一个PSFCH与一个物理直连链路传输相对应，用于针对物理直连链路传输反馈信息，例如反馈是否成功收到物理直连链路传输。In some embodiments, for PSFCH transmission, multiple PSFCHs may occupy multiple channels, and one PSFCH corresponds to one physical direct link transmission, and is used to transmit feedback information for the physical direct link, such as feedback on whether the physical direct link transmission is successfully received.

在一些实施例中，对于S-SSB传输，可以是终端多个信道上进行S-SSB的重复传输(repetition)，例如进行S-SSB的重复传输的目的包括但不限于为了占用多个信道。In some embodiments, for S-SSB transmission, the terminal may perform repeated transmission (repetition) of S-SSB on multiple channels. For example, the purpose of performing repeated transmission of S-SSB includes but is not limited to occupying multiple channels.

在一些实施例中，对于PSCCH、PSSCH传输而言，在需要占用多个信道时，终端可以采用第一多信道接入机制进行多信道接入。以PSSCH传输为例。由于在基于第一多信道接入机制进行多信道接入的情况下，终端可以接入PSSCH所需占用的多个信道，因此可以确保PSSCH的顺利传输。In some embodiments, for PSCCH and PSSCH transmission, when multiple channels need to be occupied, the terminal can use the first multi-channel access mechanism for multi-channel access. Take PSSCH transmission as an example. Since the terminal can access multiple channels required for PSSCH when multi-channel access is performed based on the first multi-channel access mechanism, the smooth transmission of PSSCH can be ensured.

在一些实施例中，对于PSFCH、S-SSB传输而言，在需要占用多个信道时，终端可以采用第二多信道接入机制进行多信道接入。以S-SSB传输为例，由于在基于第二多信道接入机制进行多信道接入的情况下，终端只需要在多个信道中的部分信道空闲的情况下，就能够接入部分信道进行S-SSB重复传输，有利于保证S-SSB重复传输及时进行。In some embodiments, for PSFCH and S-SSB transmission, when multiple channels need to be occupied, the terminal can use the second multi-channel access mechanism for multi-channel access. Taking S-SSB transmission as an example, in the case of multi-channel access based on the second multi-channel access mechanism, the terminal only needs to access some channels for S-SSB repeated transmission when some channels among the multiple channels are idle, which is conducive to ensuring that the S-SSB repeated transmission is carried out in a timely manner.

但是，在一些实施例中，终端在非授权频段进行多信道接入时，需要先传输PSFCH、S-SSB中之一，随后传输PSCCH、PSSCH中至少之一，在这种情况下，先进行的直连链路传输所需占用的信道与后进行的直连链路传输所需占用的信道可以不同，那么确定多信道接入机制会存在一些技术问题。However, in some embodiments, when the terminal performs multi-channel access in an unlicensed frequency band, it needs to first transmit one of PSFCH and S-SSB, and then transmit at least one of PSCCH and PSSCH. In this case, the channel required for the first direct link transmission and the channel required for the subsequent direct link transmission may be different, so there will be some technical problems in determining the multi-channel access mechanism.

如图3所示，以终端在非授权频段的多个信道上先进行的直连链路传输包括S-SSB重复传输，后进行的直连链路传输包括PSSCH为例。As shown in FIG3 , it is taken as an example that the direct link transmission first performed by the terminal on multiple channels in the unlicensed frequency band includes S-SSB repeated transmission, and the subsequent direct link transmission includes PSSCH.

终端先进行的S-SSB重复传输需要占用3个信道：CH#1、CH#2、CH#3；后进行的PSSCH传输只需要占用2个信道：CH#1、CH#2。在这种情况下，如果针对这3个信道按照第一多信道接入机制进行多信道接入，那么需要通过监听确定这3个信道都空闲，终端只能在3个信道都空闲的情况下同时接入3个信道进行传输。但是相对于第二多信道接入机制而言，由于第一多信道接入机制的接入条件更为严格，容易出现不满足第一多信道接入机制的接入条件的情况。如果需要继续监听这多个信道，会导致多信道接入时延较大的技术问题。 The terminal's first repeated S-SSB transmission needs to occupy three channels: CH#1, CH#2, and CH#3; the subsequent PSSCH transmission only needs to occupy two channels: CH#1 and CH#2. In this case, if multi-channel access is performed for these three channels according to the first multi-channel access mechanism, it is necessary to determine through monitoring that these three channels are idle. The terminal can only access the three channels for transmission at the same time when all three channels are idle. However, compared with the second multi-channel access mechanism, since the access conditions of the first multi-channel access mechanism are more stringent, it is easy to fail to meet the access conditions of the first multi-channel access mechanism. If it is necessary to continue monitoring these multiple channels, it will lead to a technical problem of large multi-channel access delay.

第一方面，本公开的实施例提出了信道接入方法。图4是根据本公开的实施例示出的一种信道接入方法的示意流程图。本实施例所示的信道接入方法可以由第一终端执行。In a first aspect, an embodiment of the present disclosure proposes a channel access method. Figure 4 is a schematic flow chart of a channel access method according to an embodiment of the present disclosure. The channel access method shown in this embodiment can be executed by a first terminal.

如图4所示，信道接入方法可以包括以下步骤：As shown in FIG4 , the channel access method may include the following steps:

在步骤S401中，基于在直连链路的第一传输触发对非授权频段中的多个信道的信道接入过程；In step S401, a channel access process for multiple channels in an unlicensed frequency band is triggered based on a first transmission in a direct link;

在步骤S402中，根据第一传输之后的第二传输确定用于接入多个信道的多信道接入机制。In step S402, a multi-channel access mechanism for accessing multiple channels is determined according to a second transmission after the first transmission.

需要说明的是，图4所示实施例可以独立实施，也可以与本公开中至少一个其他实施例结合实施，具体可以根据需要选择，本公开并不限制。It should be noted that the embodiment shown in FIG. 4 can be implemented independently or in combination with at least one other embodiment in the present disclosure. The specific selection can be made as needed, and the present disclosure is not limited thereto.

在一些实施例中，当终端需要在非授权频段上通过直连链路进行第一传输时，可以触发对非授权频段中多个信道的信道接入过程，为了进行多信道接入，需要先确定多信道接入机制。In some embodiments, when a terminal needs to perform a first transmission via a direct link in an unlicensed frequency band, a channel access process to multiple channels in the unlicensed frequency band may be triggered. In order to perform multi-channel access, a multi-channel access mechanism needs to be determined first.

需要说明的是，基于图3所示的实施例可知，选择多信道接入机制存在问题的原因之一在于，第一传输占用信道的数量，与随后进行的第二传输占用信道的数量不同。因此，在一些实施例中，在执行本公开实施例中的步骤之前，可以先确定第一传输占用信道的数量，与随后进行的第二传输占用信道的数量是否相同，若不同，则执行本公开实施例中的步骤，若相同，则可以不执行本公开实施例中的步骤，而是根据第一多信道接入机制进行多信道接入。It should be noted that, based on the embodiment shown in FIG3 , one of the reasons why there is a problem in selecting a multi-channel access mechanism is that the number of channels occupied by the first transmission is different from the number of channels occupied by the second transmission that is subsequently performed. Therefore, in some embodiments, before executing the steps in the embodiments of the present disclosure, it may be determined whether the number of channels occupied by the first transmission is the same as the number of channels occupied by the second transmission that is subsequently performed. If they are different, the steps in the embodiments of the present disclosure are executed. If they are the same, the steps in the embodiments of the present disclosure may not be executed, but multi-channel access may be performed according to the first multi-channel access mechanism.

在一些实施例中，多信道接入机制包括以下至少之一：In some embodiments, the multi-channel access mechanism includes at least one of the following:

第一多信道接入机制；A first multi-channel access mechanism;

第二多信道接入机制。Second multi-channel access mechanism.

其中，在一些实施例中，基于第一多信道接入机制进行多信道接入，终端对多个信道进行监听，并确定多个信道都空闲的情况下，终端才能接入多个信道，并在多个信道上进行传输，否则，在多个信道中任一信道非空闲(也即繁忙)的情况下，终端都不能接入多个信道，而需要继续对这多个信道进行监听。Among them, in some embodiments, multi-channel access is performed based on the first multi-channel access mechanism. The terminal monitors multiple channels and determines that multiple channels are idle. Only then can the terminal access multiple channels and transmit on multiple channels. Otherwise, if any channel among the multiple channels is not idle (that is, busy), the terminal cannot access multiple channels and needs to continue to monitor these multiple channels.

在一些实施例中，基于第二多信道接入机制，终端对多个信道进行监听，在确定多个信道中部分信道空闲的情况下，终端就可以接入空闲的部分信道，并在接入的部分信道上进行传输，而不必在多个信道都空闲的情况才接入信道。In some embodiments, based on the second multi-channel access mechanism, the terminal monitors multiple channels. When it is determined that some of the multiple channels are idle, the terminal can access the idle channels and transmit on the accessed channels, without having to access the channels only when multiple channels are idle.

在一些实施例中，第一多信道接入机制包括：直连链路传输的多信道接入机制(Multi-channel access procedures for SL transmissions)。In some embodiments, the first multi-channel access mechanism includes: multi-channel access mechanism for direct link transmission (Multi-channel access procedures for SL transmissions).

在一些实施例中，直连链路传输的多信道接入机制可以应用于以下至少之一：PSCCH、PSSCH、S-SSB、PSFCH。In some embodiments, the multi-channel access mechanism for direct link transmission may be applied to at least one of the following: PSCCH, PSSCH, S-SSB, PSFCH.

在一些实施例中，基于直连链路传输的多信道接入机制，终端可以进行多信道接入，并在接入的多个信道上进行直连链路传输。 In some embodiments, based on a multi-channel access mechanism for direct link transmission, a terminal may perform multi-channel access and perform direct link transmission on multiple accessed channels.

例如终端需要接入的多个信道称作信道集合C，以下针对直连链路传输的多信道接入机制的具体内容进行示例性描述：For example, the multiple channels that the terminal needs to access are called a channel set C. The following is an exemplary description of the specific content of the multi-channel access mechanism for direct link transmission:

当终端需要在信道集合C上进行直连链路传输，则以下内容适用：When a terminal needs to perform direct link transmission on channel set C, the following applies:

-如果类型1信道接入过程用于信道集合C上的直连链路传输，- If the Type 1 channel access procedure is used for direct link transmission on channel set C,

-终端可以使用4.5.2.1章节中描述的类型2A信道接入机制在信道集合C中的信道c_i上进行传输，- The terminal may transmit on a channel c _i in the channel set C using the type 2A channel access mechanism described in section 4.5.2.1,

-如果信道集合C的信道频率是章节[2X]中X.X定义的信道频率集合的子集，以及- if the channel frequencies of channel set C are a subset of the channel frequency set defined in section [2X], and

-如果在终端在信道集合C中的信道c_j(j不等于i)上的传输之前，类型2A信道接入机制在信道c_i上的发送之前被执行了，以及- if, prior to the terminal's transmission on channel c _j (j not equal to i) in the set of channels C, a type 2A channel access mechanism was performed prior to the transmission on channel c _i , and

-如果终端已经使用章节4.5.1描述的类型1信道接入机制接入了信道c_j，- If the terminal has already accessed channel c _j using the Type 1 channel access mechanism described in Section 4.5.1,

-其中，在对信道集合C中的任何信道执行类型1信道接入过程之前，终端从信道集合C中均匀随机地选择信道c_j，- wherein before performing a type 1 channel access procedure on any channel in the channel set C, the terminal uniformly randomly selects a channel c _j from the channel set C,

-终端可以使用类型1信道接入机制在信道c_i上进行传输，- A terminal may transmit on channel c _i using a type 1 channel access mechanism,

-如果终端未能接入载波带宽中的任何信道，则终端可以不在载波带宽内的信道c_i上进行传输，在该载波带宽上终端被调度或配置有直连链路资源。- If the terminal fails to access any channel in the carrier bandwidth, the terminal may not transmit on the channel c _i within the carrier bandwidth on which the terminal is scheduled or configured with direct link resources.

需要说明的是，本公开实施例中所述的章节，是指3GPP(3rd Generation Partnership Project，第三代合作伙伴计划)TS 37.213V18.0.0中描述的章节，在此不再展开描述。It should be noted that the chapters described in the embodiments of the present disclosure refer to the chapters described in 3GPP (3rd Generation Partnership Project) TS 37.213V18.0.0, which will not be described in detail here.

在一些实施例中，第二多信道接入机制包括以下至少之一：In some embodiments, the second multi-channel access mechanism includes at least one of the following:

为了方便描述，以下将PSFCH和S-SSB统称为第一传输，以下针对类型A多信道接入机制进行示例性描述：For the convenience of description, PSFCH and S-SSB are collectively referred to as the first transmission below. The following is an exemplary description of the type A multi-channel access mechanism:

根据本章节中描述的过程，终端可以接入仅执行第一传输的多个信道。According to the process described in this section, the terminal can access multiple channels that perform only the first transmission.

终端可以根据章节4.5.1中描述的过程在C中每个信道c_i上执行信道接入，其中C是终端打算在其上进行传输的信道集合，i＝0,1,…,q-1，q是终端打算在其上进行传输的信道的数量。The terminal may perform channel access on each channel c _i in C according to the procedure described in Section 4.5.1, where C is the set of channels on which the terminal intends to transmit, i = 0, 1, …, q-1, and q is the number of channels on which the terminal intends to transmit.

章节4.5.1描述的计数器N是为每个信道c_i确定的，并表示为N_Ci，N_Ci基于章节4.5.6.1.1或4.5.6.1.2被保持。The counter N described in Section 4.5.1 is determined for each channel c _i and is denoted as N _Ci , _which is maintained based on Section 4.5.6.1.1 or 4.5.6.1.2.

为了确定信道c_i的CW_p，在章节4.5.4中描述的过程中使用与信道c_i完全或部分重叠的任何PSSCH。其中，CW是指竞争窗口(contention window)。To determine the CW _p of channel c _i , the procedure described in Section 4.5.4 uses _the Any PSSCH that overlaps. Wherein, CW refers to the contention window.

以下针对类型A1多信道接入机制进行示例性描述：The following is an exemplary description of the type A1 multi-channel access mechanism:

章节4.5.1描述的计数器N是为每个信道c_i独立确定的，并表示为N_Ci。The counter N described in Section 4.5.1 is determined independently for each channel _ci and is denoted N _Ci .

如果不能长期保证不存在共享信道的任何其他技术(例如，通过调节水平)，当终端停止在C中任何一个信道c_j的传输时，对于每个信道c_i，当在等待4T_sl的持续时间后或在重新初始化N_Ci后检测到空闲感知时隙时，终端可以恢复递减N_Ci，用于分别执行信道接入过程。If the absence of any other technology for sharing the channel cannot be guaranteed in the long term (e.g. by adjusting the level), when the terminal stops transmitting on any channel c _j in C, for each channel c _i , when an idle sensing slot is detected after waiting for a duration of 4T _sl or after reinitializing N _Ci , the terminal can resume decrementing N _Ci for performing the channel access procedure respectively.

以下针对类型A2多信道接入机制进行示例性描述：The following is an exemplary description of the type A2 multi-channel access mechanism:

计数器N基于章节4.5.1中对于C中c_j的描述确定，并表示为N_Cj，其中，c_j是有最大CW_p值的信道，对于每个信道c_i，N_Ci＝N_Cj。The counter N is determined based on the description of c _j in C in Section 4.5.1 and is denoted as N _Cj , where c _j is the channel with the maximum CW _p value, and for each channel c _i , N _Ci =N _Cj .

当终端在为其确定N_Ci的任何一个信道上停止第一传输时，终端应分别重新初始化所有信道的N_Ci。When a terminal stops the first transmission on any channel for which N _Ci is determined, the terminal shall reinitialize N _Ci for all channels separately.

以下针对类型A多信道接入机制进行示例性描述：The following is an exemplary description of the type A multi-channel access mechanism:

终端基于以下方式至少之一选择C中的信道c_j：The terminal selects a channel c _j in C based on at least one of the following methods:

-终端通过在C中的多个信道c_i上的每次传输之前从C中均匀随机地选择c_j；- The terminal selects c _j uniformly randomly from C before each transmission on multiple channels c _i in C;

-终端选择c_j的频率不超过每1秒一次- The frequency of terminal selecting c _j does not exceed once every 1 second

其中C是终端打算在其上进行传输的信道集合，i＝0,1,…,q-1，q是终端打算在其上进行第一传输的信道的数量。Where C is the set of channels on which the terminal intends to transmit, i = 0, 1, ..., q-1, and q is the number of channels on which the terminal intends to make the first transmission.

对于在信道c_j上的传输，终端应根据章节4.5.1中所述的过程以及章节4.5.6.2.1或4.5.6.2.2条中所描述的修改，在信道c_j上执行信道接入，以便接入信道以执行第一传输。For transmission on channel c _j , the terminal shall perform channel access on channel c _j according to the procedure described in Section 4.5.1 with the modifications described in Section 4.5.6.2.1 or 4.5.6.2.2 in order to access the channel to perform the first transmission.

对于在信道c_i上的传输，对于每个信道c_i，终端应在信道c_j上传输之前至少感测信道c_i一个感测间隔T_mc＝25微秒，并且终端可以在感测到信道c_i空闲至少感测间隔T_mc之后立即在信道c_i上进行传输，用于接入该信道以执行第一传输。如果信道在给定间隔T_mc中对信道c_j执行这种空闲感测的所有持续时间期间被感测为空闲，则信道c_i被视为空闲时长T_mc。For transmission on channel c _i , for each channel c _i , the terminal shall sense channel c _i for at least one sensing interval T _mc = 25 microseconds before transmitting on channel c _j , and the terminal may transmit on channel c _i immediately after sensing that channel c _i is idle for at least sensing interval T _mc for accessing the channel to perform the first transmission. Channel c _i is considered idle for a duration T _mc if the channel is sensed as idle during all the durations of performing such idle sensing on channel c _j in a given interval T _mc .

终端不可以在信道c_i(i不等于j)上传输超过表4.5-1中给出的T_m cot，p的时间段，其中，其中T_m cot，p的值是使用用于信道c_j的信道接入参数来确定的，用于接入信道以执行第一传输。The terminal may not transmit on channel c _i (i not equal to j) for a period exceeding T _{m cot,p} given in Table 4.5-1, where the value of T _{m cot,p} is determined using the channel access parameters for channel c _j used to access the channel to perform the first transmission.

对于本章节中的过程，终端为第一传输选择的信道集合C的信道是(预)配置的侧链资源池中RB集合的子集。For the process in this section, the channels of the channel set C selected by the terminal for the first transmission are a subset of the RB set in the (pre-)configured sidelink resource pool.

以下针对类型B1多信道接入机制进行示例性描述：The following is an exemplary description of the type B1 multi-channel access mechanism:

一个单独的CW_p值被保持，用于频道集合C。A single CW _p value is maintained for the channel set C.

为了确定信道c_i的CW_p，在章节4.5.4中描述的过程中使用与信道c_i完全或部分重叠的任何PSSCH。To determine _CWp for channel c _i , any PSSCH that fully or partially overlaps with channel c _i is used in the process described in Section 4.5.4.

以下针对类型B2多信道接入机制进行示例性描述： The following is an exemplary description of the type B2 multi-channel access mechanism:

一个CW_p值被保持，独立地用于每个使用章节4.5.4中描述的过程的信道c_i。One CW _p value is maintained, independently for each channel c _i , using the procedure described in Section 4.5.4.

为了确定信道c_j的Ninit(也即初始N值)，可以使用C中信道c_j1的CW_p值，其中，c_j1是信道集合C中有着最大CW_p值的信道。In order to determine Ninit (ie, the initial N value) of channel _cj , the _CWp value of channel _cj1 in C can be used, where _cj1 is the channel with the largest _CWp value in the channel set C.

在一些实施例中，第一传输包括以下至少之一：In some embodiments, the first transmission includes at least one of the following:

物理直连链路反馈信道PSFCH；Physical direct link feedback channel PSFCH;

直连链路同步广播块S-SSB。Direct link synchronization broadcast block S-SSB.

在一些实施例中，当终端需要在非授权频段的多个信道上进行PSFCH传输，可以触发多信道接入过程，其中，对于PSFCH传输，可以是多个PSFCH占用多个信道，一个PSFCH与一个直通链路传输相对应，用于针对直通链路传输反馈信息，例如反馈是否成功收到物理直连链路传输。In some embodiments, when the terminal needs to perform PSFCH transmission on multiple channels in an unlicensed frequency band, a multi-channel access process can be triggered, wherein, for PSFCH transmission, multiple PSFCHs may occupy multiple channels, and one PSFCH corresponds to one direct link transmission, which is used to transmit feedback information for the direct link, such as feedback on whether the physical direct link transmission is successfully received.

在一些实施例中，当终端需要在非授权频段的多个信道上进行S-SSB传输，可以触发多信道接入过程，其中，对于S-SSB传输，可以是终端多个信道上进行S-SSB的重复传输(repetition)，例如进行S-SSB的重复传输的目的包括但不限于为了占用多个信道。In some embodiments, when a terminal needs to perform S-SSB transmission on multiple channels in an unlicensed frequency band, a multi-channel access process can be triggered, wherein, for S-SSB transmission, the terminal can perform repeated transmission (repetition) of S-SSB on multiple channels. For example, the purpose of repeated transmission of S-SSB includes but is not limited to occupying multiple channels.

在一些实施例中，信道接入方法还包括：第一传输包括直连链路同步广播块，根据第一传输之后的第二传输确定用于接入多个信道的多信道接入机制，或者，确定多个信道中在第一传输之后存在第二传输的第一部分信道，确定在第一部分信道进行直连链路同步广播块重复传输。In some embodiments, the channel access method also includes: the first transmission includes a direct link synchronization broadcast block, and a multi-channel access mechanism for accessing multiple channels is determined based on a second transmission after the first transmission, or a first part of channels in multiple channels where a second transmission exists after the first transmission is determined, and repeated transmission of the direct link synchronization broadcast block is determined on the first part of channels.

在一些实施例中，信道接入方法还包括：确定用于接入第一部分信道的多信道接入机制包括第一多信道接入机制。In some embodiments, the channel access method further includes: determining that the multi-channel access mechanism used to access the first part of the channels includes a first multi-channel access mechanism.

基于图3所示的实施例可知，选择多信道接入机制存在问题的原因之一在于，第一传输占用信道的数量，与随后进行的第二传输占用信道的数量不同。Based on the embodiment shown in FIG. 3 , it can be seen that one of the reasons why there is a problem in selecting the multi-channel access mechanism is that the number of channels occupied by the first transmission is different from the number of channels occupied by the subsequent second transmission.

而在第一传输包括S-SSB的情况下，终端可以是需要在非授权频段的多个信道上进行S-SSB的重复传输的情况下，触发多信道接入流程。在这种情况下，由于S-SSB是重复传输，并且传输过程对于终端而言是可控的，所以对于终端而言，可以在两种操作方式中择一进行。In the case where the first transmission includes S-SSB, the terminal may trigger the multi-channel access process when it needs to repeatedly transmit S-SSB on multiple channels in the unlicensed frequency band. In this case, since S-SSB is a repeated transmission and the transmission process is controllable for the terminal, the terminal can choose one of the two operation modes.

方式一，终端可以确定在多个信道中在第一传输之后存在第二传输的第一部分信道，并调整为在第一部分信道进行S-SSB的重复传输，在这种情况下，第一传输是在第一部分信道上进行的，第二传输也是在第一部分信道上进行的，所以第一传输占用信道的数量与随后进行的第二传输占用信道的数量相同，那么可以不必根据第二传输选择多信道接入机制，而是直接基于第一多信道接入机制进行多信道接入。Method 1: The terminal can determine that there is a first part of channels for the second transmission after the first transmission in multiple channels, and adjust to perform repeated transmission of S-SSB on the first part of channels. In this case, the first transmission is performed on the first part of channels, and the second transmission is also performed on the first part of channels, so the number of channels occupied by the first transmission is the same as the number of channels occupied by the subsequent second transmission. Therefore, there is no need to select a multi-channel access mechanism based on the second transmission, but multi-channel access can be performed directly based on the first multi-channel access mechanism.

例如在图3所示实施例基础上，第二传输包括PSSCH。S-SSB重复传输需要占用3个信道：CH#1、CH#2、CH#3；后进行的PSSCH传输只需要占用2个信道：CH#1、CH#2。For example, based on the embodiment shown in Figure 3, the second transmission includes PSSCH. S-SSB repeated transmission needs to occupy 3 channels: CH#1, CH#2, CH#3; the subsequent PSSCH transmission only needs to occupy 2 channels: CH#1 and CH#2.

基于上述方式一，终端可以确定第一部分信道为CH#1、CH#2，那么如图5所示，终端可以调整为在CH#1、CH#2上进行S-SSB的重复传输，也即终端在CH#1、CH#2线进行S-SSB的重复传输，然后进行PSSCH的传输。并且由于传输S-SSB和传输PSSCH 所需占用的信道都是CH#1和CH#2，从而可以基于第一多信道接入机制接入CH#1和CH#2。Based on the above method 1, the terminal can determine that the first part of the channels is CH#1 and CH#2. Then, as shown in Figure 5, the terminal can adjust to repeatedly transmit S-SSB on CH#1 and CH#2, that is, the terminal repeatedly transmits S-SSB on CH#1 and CH#2, and then transmits PSSCH. The channels required to be occupied are CH#1 and CH#2, so CH#1 and CH#2 can be accessed based on the first multi-channel access mechanism.

方式二，终端可以不调整S-SSB的重复传输所在的信道，仍然基于图4所示的实施例，根据第一传输之后的第二传输确定用于接入多个信道的多信道接入机制。Method 2: The terminal may not adjust the channel where the repeated transmission of S-SSB is located, and still based on the embodiment shown in Figure 4, determine the multi-channel access mechanism for accessing multiple channels according to the second transmission after the first transmission.

在一些实施例中，信道接入方法还包括：当在第一部分信道进行直连链路同步广播块重复传输，第一部分信道包括不连续(non-contiguous)的信道，且第一终端不支持在不连续的信道上进行直连链路同步广播块重复传输，确定在不连续的信道之间的信道上进行直连链路同步广播块重复传输。In some embodiments, the channel access method also includes: when performing repeated transmission of direct link synchronization broadcast blocks on a first part of the channel, the first part of the channel includes non-contiguous channels, and the first terminal does not support repeated transmission of direct link synchronization broadcast blocks on non-contiguous channels, determining to perform repeated transmission of direct link synchronization broadcast blocks on a channel between non-contiguous channels.

第一终端在非授权频段的多个信道进行S-SSB的重复传输时，若第一终端不支持在不连续的信道上进行S-SSB的重复传输，那么S-SSB占用的信道在频域上需要保持连续。但是，当第一终端尝试按照上述方式一执行操作，但是确定的第一部分信道中的信道不连续，为了确保满足第一终端的能力，在不连续的信道之间的信道上仍然要进行S-SSB的重复传输，从而确保S-SSB占用的信道在频域上连续。When the first terminal repeatedly transmits S-SSB on multiple channels in the unlicensed frequency band, if the first terminal does not support repeated transmission of S-SSB on discontinuous channels, the channels occupied by S-SSB need to remain continuous in the frequency domain. However, when the first terminal attempts to perform the operation according to the above method 1, but the channels in the determined first part of the channels are discontinuous, in order to ensure that the capabilities of the first terminal are met, repeated transmission of S-SSB is still required on the channels between the discontinuous channels, thereby ensuring that the channels occupied by S-SSB are continuous in the frequency domain.

其中，当由于在不连续的信道之间的信道上进行S-SSB的重复传输而导致第一传输占用信道的数量，与随后进行的第二传输占用信道的数量不同，那么可以按照上述方式二执行操作。Among them, when the number of channels occupied by the first transmission is different from the number of channels occupied by the subsequent second transmission due to repeated transmission of S-SSB on channels between discontinuous channels, the operation can be performed according to the above-mentioned method 2.

需要说明的是，当基于上述方式二执行操作的结果，仍然存在多个信道中用于进行第一传输(例如S-SSB、PSFCH等)的部分信道不连续的情况，且第一终端不支持在不连续的信道上进行第一传输，那么第一终端可以不进行第一传输，或者，第一终端可以放弃一个或多个信道上进行第一传输，确保用于传输第一传输信道连续。It should be noted that, when the result of performing operations based on the above-mentioned method 2 is that some channels used for the first transmission (such as S-SSB, PSFCH, etc.) in multiple channels are still discontinuous, and the first terminal does not support the first transmission on discontinuous channels, then the first terminal may not perform the first transmission, or the first terminal may give up the first transmission on one or more channels to ensure the continuity of the channels used to transmit the first transmission.

在一些实施例中，第二传输包括以下至少之一：In some embodiments, the second transmission includes at least one of the following:

在一些实施例中，物理直连链路信道包括以下至少之一：In some embodiments, the physical direct link channel includes at least one of the following:

物理直连链路控制信道PSCCH；Physical direct link control channel PSCCH;

物理直连链路共享信道PSSCH。Physical direct link shared channel PSSCH.

在一些实施例中，基于在直连链路的第一传输触发对非授权频段中的多个信道的信道接入过程，包括：终端在非授权频段的n个信道上通过直连链路进行第一传输(例如传输PSFCH和/或S-SSB)触发对n个信道的信道接入过程。In some embodiments, a channel access process to multiple channels in an unlicensed frequency band is triggered based on a first transmission in a direct link, including: a terminal performs a first transmission (for example, transmitting PSFCH and/or S-SSB) on n channels in the unlicensed frequency band through a direct link to trigger a channel access process to n channels.

根据第一传输之后的第二传输确定用于接入多个信道的多信道接入机制，包括：若在第一传输之后需要在n个信道中的m个信道上进行第二传输(例如传输PSCCH和/或PSSCH)那么终端可以根据PSCCH和/或PSSCH，那么终端可以根据PSCCH和/或PSSCH的情况选择接入n个信道的多信道接入机制，其中，m和n为整数，m＜n，且m大于或等于1。A multi-channel access mechanism for accessing multiple channels is determined according to a second transmission after a first transmission, including: if a second transmission is required on m channels out of n channels after the first transmission (for example, transmitting PSCCH and/or PSSCH), then the terminal can select a multi-channel access mechanism for accessing n channels according to the situation of PSCCH and/or PSSCH, wherein m and n are integers, m＜n, and m is greater than or equal to 1.

在一些实施例中，根据第一传输之后的第二传输确定用于接入多个信道的多信道接入机制，包括：确定多个信道中在第一传输之后存在第二传输的第一部分信道；根据第二传输确定用于接入第一部分信道的多信道接入机制。In some embodiments, a multi-channel access mechanism for accessing multiple channels is determined based on a second transmission after a first transmission, including: determining a first portion of channels among multiple channels where a second transmission exists after the first transmission; and determining a multi-channel access mechanism for accessing the first portion of channels based on the second transmission.

在一些实施例中，对于在第一传输之后需要进行的第二传输，终端可以确定需要进行第二传输在多个信道中的第一部分信道，那么对于这第一部分信道，终端可以根据第二传输确定多信道接入机制，并根据确定的多信道接入机制接入第一部分信道。 In some embodiments, for a second transmission that needs to be performed after a first transmission, the terminal can determine a first portion of channels among multiple channels on which the second transmission needs to be performed. Then, for this first portion of channels, the terminal can determine a multi-channel access mechanism based on the second transmission, and access the first portion of channels based on the determined multi-channel access mechanism.

而关于多个信道中第一部分信道以外的第二部分信道，用于接入第二部分信道的信道接入机制，在后续实施例中进行示例性描述。As for the second part of channels other than the first part of channels among the multiple channels, a channel access mechanism for accessing the second part of channels will be exemplarily described in subsequent embodiments.

在一些实施例中，根据第二传输确定用于接入第一部分信道的多信道接入机制，包括：第二传输包括占用多个信道的物理直连链路信道，确定用于接入第一部分信道的多信道接入机制为第一多信道接入机制。In some embodiments, a multi-channel access mechanism for accessing the first part of the channels is determined based on the second transmission, including: the second transmission includes a physical direct link channel occupying multiple channels, and the multi-channel access mechanism for accessing the first part of the channels is determined to be a first multi-channel access mechanism.

在第一传输之后第二传输包括占用多个信道的物理直连链路信道(例如PSCCH和/或PSSCH)的情况下，那么在第一部分信道包括多个信道，并且在第一部分信道所包括的多个信道中，既存在第一传输，又存在第二传输，所以在第一部分信道中第一传输占用信道的数量与随后进行的第二传输占用信道的数量就相同了，那么可以选择基于第一多信道接入机制在第一部分信道中进行多信道接入，从而可以在第一部分信道全部空闲时进行第二传输，有利于确保第二传输顺利进行。In the case where the second transmission after the first transmission includes a physical direct link channel (such as PSCCH and/or PSSCH) occupying multiple channels, then the first part of the channels includes multiple channels, and in the multiple channels included in the first part of the channels, there are both first transmissions and second transmissions, so the number of channels occupied by the first transmission in the first part of the channels is the same as the number of channels occupied by the subsequent second transmission. Then, multi-channel access can be selected in the first part of the channels based on the first multi-channel access mechanism, so that the second transmission can be performed when all the channels in the first part are idle, which is conducive to ensuring the smooth progress of the second transmission.

在一些实施例中，根据第二传输确定用于接入第一部分信道的多信道接入机制，包括：In some embodiments, determining a multi-channel access mechanism for accessing the first portion of channels based on the second transmission includes:

第二传输包括占用一个信道的物理直连链路信道，确定用于接入多个信道的多信道接入机制为第二多信道接入机制。The second transmission includes a physical direct link channel occupying one channel, and a multi-channel access mechanism for accessing multiple channels is determined to be a second multi-channel access mechanism.

在第一传输之后第二传输包括占用一个信道的物理直连链路信道(例如PSCCH和/或PSSCH)的情况下，对于第二传输而言，就不必考虑通过第一多信道接入机制接入信道了，所以也就不会出现图3所示实施例的中判断选择第一多信道接入机制，还是第二多信道接入时存在的技术问题，因此可以直接基于第二多信道接入机制在多个信道中进行多信道接入，以便尽快成功接入多个信道，有利于确保传输操作及时进行。In the case where the second transmission after the first transmission includes a physical direct link channel (such as PSCCH and/or PSSCH) occupying a channel, for the second transmission, there is no need to consider accessing the channel through the first multi-channel access mechanism, so there will be no technical problem in judging whether to select the first multi-channel access mechanism or the second multi-channel access in the embodiment shown in Figure 3. Therefore, multi-channel access can be performed directly in multiple channels based on the second multi-channel access mechanism, so as to successfully access multiple channels as soon as possible, which is conducive to ensuring that the transmission operation is carried out in a timely manner.

在一些实施例中，信道接入方法还包括：确定多个信道中在第一传输之后不存在第二传输的第二部分信道；根据第二部分信道中信道的数量确定用于接入第二部分信道的多信道接入机制。In some embodiments, the channel access method further includes: determining a second portion of channels in multiple channels where no second transmission occurs after a first transmission; and determining a multi-channel access mechanism for accessing the second portion of channels based on the number of channels in the second portion of channels.

对于在第一传输之后需要进行的第二传输，终端可以确定需要进行第二传输在多个信道中的第一部分信道，以及多个信道中第一部分信道以外的第二部分信道。对于第二部分信道，由于只用于进行第一传输，而不用第二传输，所以在确定用于接入第二部分信道的信道接入机制的情况下，可以不必再考虑第二传输，而是根据第二部分信道中信道的数量确定用于接入第二部分信道的多信道接入机制。For a second transmission that needs to be performed after the first transmission, the terminal may determine a first portion of channels among the multiple channels on which the second transmission is required, and a second portion of channels other than the first portion of channels among the multiple channels. For the second portion of channels, since they are only used for the first transmission and not for the second transmission, when determining a channel access mechanism for accessing the second portion of channels, it is not necessary to consider the second transmission, but rather determine a multi-channel access mechanism for accessing the second portion of channels based on the number of channels in the second portion of channels.

在一些实施例中，根据第二部分信道中信道的数量确定用于接入第二部分信道的多信道接入机制，包括：第二部分信道中信道的数量为多个，确定用于接入第二部分信道的多信道接入机制包括第二多信道接入机制；In some embodiments, determining a multi-channel access mechanism for accessing the second portion of channels according to the number of channels in the second portion of channels includes: the number of channels in the second portion of channels is multiple, and determining that the multi-channel access mechanism for accessing the second portion of channels includes a second multi-channel access mechanism;

其中，信道接入方法还包括：第二部分信道中信道的数量为一个，确定用于接入第二部分信道的信道接入机制包括单信道接入机制。The channel access method further includes: the number of channels in the second part of channels is one, and determining that the channel access mechanism used to access the second part of channels includes a single channel access mechanism.

例如，在第二部分信道中信道的数量为多个，那么对于第二部分信道仍然需要采用多信道接入机制进行接入，具体地，可以选择第二多信道接入机制，以便尽快地接入第二部分信道，降低传输操作的延迟。For example, if there are multiple channels in the second part of the channels, then the second part of the channels still needs to be accessed using a multi-channel access mechanism. Specifically, a second multi-channel access mechanism can be selected to access the second part of the channels as quickly as possible and reduce the delay of the transmission operation.

例如，在第二部分信道中信道的数量为一个，那么对于第二部分信道就不必采用多信道接入机制进行接入，而是可以选择单信道接入机制进行接入。For example, if the number of channels in the second part of channels is one, then it is not necessary to use a multi-channel access mechanism for accessing the second part of channels, but a single-channel access mechanism can be selected for accessing.

在一些实施例中，信道接入方法还包括以下至少之一：In some embodiments, the channel access method further includes at least one of the following:

成功接入第一部分信道，在第一部分信道进行传输； Successfully access the first part of the channel and transmit on the first part of the channel;

成功接入第二部分信道，在第二部分信道进行传输。The second part of the channel is successfully accessed and transmission is performed on the second part of the channel.

对于第一部分信道和第二部分信道，终端成功接入了任一部分，就可以在成功接入的这部分信道上进行传输，而不必在第一部分信道和第二部分信道都成功接入的情况下才进行传输，据此，有利于确保传输操作尽快进行。For the first part of the channel and the second part of the channel, if the terminal successfully accesses any part, it can transmit on the part of the channel that has been successfully accessed, without having to transmit only when both the first part of the channel and the second part of the channel have been successfully accessed. This is helpful to ensure that the transmission operation is carried out as soon as possible.

第一终端发送的第二传输；a second transmission sent by the first terminal;

第一终端以外的第二终端发送的第二传输，其中，第一终端与第二终端共享多个信道。A second transmission sent by a second terminal other than the first terminal, wherein the first terminal shares a plurality of channels with the second terminal.

在一些实施例中，第一终端在可以与第二终端(可以为一个或多个终端)共享非授权频段中的多个信道，例如第二终端为第一终端的响应(responding)终端。在第一终端与第二终端共享非授权频段中的多个信道时，第一终端将自身的信道占用时间(Channel Occupancy Time，COT)共享给第二终端，从而第二终端可以在该COT内的预留资源上进行SL-U传输。In some embodiments, the first terminal may share multiple channels in an unlicensed frequency band with a second terminal (which may be one or more terminals), for example, the second terminal is a responding terminal of the first terminal. When the first terminal and the second terminal share multiple channels in an unlicensed frequency band, the first terminal shares its own channel occupancy time (COT) with the second terminal, so that the second terminal can perform SL-U transmission on the reserved resources within the COT.

当第一终端基于在直连链路的第一传输触发对这多个信道的信道接入过程，即使第一终端在第一传输之后不需要进行第二传输，但是如果第二终端需要在第一传输之后进行第二传输(例如在预留资源上进行)，第一终端仍然需要根据第二传输确定用于接入多个信道的多信道接入机制。When the first terminal triggers the channel access process for the multiple channels based on the first transmission on the direct link, even if the first terminal does not need to perform a second transmission after the first transmission, if the second terminal needs to perform a second transmission after the first transmission (for example, on reserved resources), the first terminal still needs to determine the multi-channel access mechanism for accessing the multiple channels based on the second transmission.

所以第一终端在确定用于接入多个信道的多信道接入机制时，除了需要考虑的在第一传输之后第一终端自身的第二传输，还需要考虑在在第一传输之后第二终端的第二传输。Therefore, when the first terminal determines the multi-channel access mechanism for accessing multiple channels, in addition to considering the second transmission of the first terminal itself after the first transmission, it also needs to consider the second transmission of the second terminal after the first transmission.

在一些实施例中，第一传输之后的第二传输包括以下至少之一：In some embodiments, the second transmission after the first transmission includes at least one of the following:

与第一传输在时域上相邻的第二传输；a second transmission adjacent to the first transmission in the time domain;

与第一传输在时域上第一间隔小于间隔阈值的第二传输。A second transmission having a first interval in the time domain with respect to the first transmission that is less than an interval threshold.

本公开的实施例主要是在终端在第一传输之后还需要进行第二传输的场景下实施的，而关于第一传输之后的第二传输，并不是指第一传输之后的任意传输，而是在时域上需要满足一些条件的传输。The embodiments of the present disclosure are mainly implemented in a scenario where a terminal needs to perform a second transmission after a first transmission. The second transmission after the first transmission does not refer to any transmission after the first transmission, but a transmission that needs to meet certain conditions in the time domain.

例如，第二传输可以是与第一传输在时域上相邻的第二传输；例如，第二传输可以是与第一传输在时域上第一间隔小于间隔阈值的第二传输，其中，间隔阈值可以是网络设备配置的，也可以是基于协议约定确定的，例如间隔阈值可以为信道占用时间(COT)，例如间隔阈值可以包括多个时域单元，时域单元包括以下至少之一：帧、子帧、时隙(slot)、符号(symbol)。For example, the second transmission may be a second transmission that is adjacent to the first transmission in the time domain; for example, the second transmission may be a second transmission that has a first interval in the time domain with the first transmission that is less than an interval threshold, wherein the interval threshold may be configured by a network device, or may be determined based on a protocol agreement, for example, the interval threshold may be a channel occupancy time (COT), for example, the interval threshold may include multiple time domain units, and the time domain unit includes at least one of the following: frame, subframe, time slot (slot), symbol (symbol).

如图6所示，终端先进行的S-SSB重复传输需要占用3个信道：CH#1、CH#2、CH#3；后进行的一个PSSCH#1传输在CH#1中，且与S-SSB相邻，后进行的另一个PSSCH#2在CH#2中，且与S-SSB之间的第一间隔小于间隔阈值，那么PSSCH#1和PSSCH#2都属于第一传输之后的第二传输。As shown in Figure 6, the terminal's first repeated S-SSB transmission needs to occupy three channels: CH#1, CH#2, and CH#3; the subsequent PSSCH#1 transmission is in CH#1 and is adjacent to the S-SSB, and the subsequent PSSCH#2 is in CH#2, and the first interval between it and the S-SSB is less than the interval threshold, then PSSCH#1 and PSSCH#2 both belong to the second transmission after the first transmission.

需要说明的是，第二传输并不限于上述几种情况下的传输，例如还可以是与第一传输处于同一个信道占用时间(COT)内的传输，本公开对此并不限制。It should be noted that the second transmission is not limited to the transmission in the above-mentioned cases. For example, it can also be a transmission within the same channel occupancy time (COT) as the first transmission, and the present disclosure does not limit this.

在一些实施例中，信道接入方法还包括：第一间隔大于16微秒，进行第二传输时进行信道占用时间恢复(COT resuming)，通过type 2A在各个信道上进行信道接入。In some embodiments, the channel access method further includes: the first interval is greater than 16 microseconds, and the second transmission Channel occupancy time recovery (COT resuming) is performed during the transmission, and channel access is performed on each channel through type 2A.

由于第一传输和第二传输是在非授权频段上进行的，在第二传输与第一传输之间的间隔相对较大(例如大于16微秒)的情况下，终端进行第二传输时需要进行信道占用时间恢复，以便确保仍然在非授权频段上进行第二传输。而在第二传输与第一传输之间的间隔相对较小(例如小于或等于16微秒)的情况，终端进行第二传输时可以不必进行信道占用时间恢复，直接进行第二传输即可。Since the first transmission and the second transmission are performed on the unlicensed frequency band, when the interval between the second transmission and the first transmission is relatively large (for example, greater than 16 microseconds), the terminal needs to perform channel occupation time recovery when performing the second transmission, so as to ensure that the second transmission is still performed on the unlicensed frequency band. When the interval between the second transmission and the first transmission is relatively small (for example, less than or equal to 16 microseconds), the terminal does not need to perform channel occupation time recovery when performing the second transmission, and can directly perform the second transmission.

在一些实施例中，信息等的名称不限定于实施例中所记载的名称，“信息(information)”、“消息(message)”、“信号(signal)”、“信令(signaling)”、“报告(report)”、“配置(configuration)”、“指示(indication)”、“指令(instruction)”、“命令(command)”、“信道”、“参数(parameter)”、“域”、“字段”、“符号(symbol)”、“码元(symbol)”、“码本(codebook)”、“码字(codeword)”、“码点(codepoint)”、“比特(bit)”、“数据(data)”、“程序(program)”、“码片(chip)”等术语可以相互替换。In some embodiments, the names of information, etc. are not limited to the names recorded in the embodiments, and terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", "field", "symbol", "symbol", "code element", "codebook", "codeword", "codepoint", "bit", "data", "program", and "chip" can be used interchangeably.

在一些实施例中，“上行”、“上行链路”、“物理上行链路”等术语可以相互替换，“下行”、“下行链路”、“物理下行链路”等术语可以相互替换，“侧行(side)”、“侧行链路(sidelink)”、“侧行通信”、“侧行链路通信”、“直连”、“直连链路”、“直连通信”、“直连链路通信”等术语可以相互替换。In some embodiments, terms such as "uplink", "uplink", "physical uplink" can be interchangeable, and terms such as "downlink", "downlink", "physical downlink" can be interchangeable, and terms such as "side", "sidelink", "side communication", "sidelink communication", "direct connection", "direct link", "direct communication", "direct link communication" can be interchangeable.

在一些实施例中，“时刻”、“时间点”、“时间”、“时间位置”等术语可以相互替换，“时长”、“时段”、“时间窗口”、“窗口”、“时间”等术语可以相互替换。In some embodiments, terms such as "moment", "time point", "time", and "time position" can be interchangeable, and terms such as "duration", "period", "time window", "window", and "time" can be interchangeable.

在一些实施例中，“帧(frame)”、“无线帧(radio frame)”、“子帧(subframe)”、“时隙(slot)”、“子时隙(sub-slot)”、“迷你时隙(mini-slot)”、“符号(symbol)”、“码元(symbol)”、“发送时间间隔(transmission time interval，TTI)”等术语可以相互替换。In some embodiments, the terms "frame", "radio frame", "subframe", "slot", "sub-slot", "mini-slot", "symbol", "symbol", "transmission time interval (TTI)" and so on can be used interchangeably.

在一些实施例中，“获取”、“获得”、“得到”、“接收”、“传输”、“双向传输”、“发送和/或接收”可以相互替换，其可以解释为从其他主体接收，从协议中获取，从高层获取，自身处理得到、自主实现等多种含义。In some embodiments, "obtain", "obtain", "get", "receive", "transmit", "bidirectional transmission", "send and/or receive" can be interchangeable, and can be interpreted as receiving from other entities, obtaining from protocols, obtaining from high levels, obtaining by self-processing, autonomous implementation, etc.

在一些实施例中，“发送”、“发射”、“上报”、“下发”、“传输”、“双向传输”、“发送和/或接收”等术语可以相互替换。In some embodiments, terms such as "send", "transmit", "report", "send", "transmit", "bidirectional transmission", "send and/or receive" can be used interchangeably.

与前述的信道接入方法和通信方法的实施例相对应地，本公开还提供了终端的实施例。Corresponding to the aforementioned embodiments of the channel access method and the communication method, the present disclosure also provides an embodiment of a terminal.

图7是根据本公开的实施例示出的一种终端的示意框图。如图7所示，所述终端包括处理模块701、通信模块702。FIG7 is a schematic block diagram of a terminal according to an embodiment of the present disclosure. As shown in FIG7 , the terminal includes a processing module 701 and a communication module 702 .

在一些实施例中，处理模块用于基于在直连链路的第一传输触发对非授权频段中的多个信道的信道接入过程；根据所述第一传输之后的第二传输确定用于接入所述多个信道的多信道接入机制。In some embodiments, the processing module is used to trigger a channel access process for multiple channels in an unlicensed frequency band based on a first transmission in a direct link; and determine a multi-channel access mechanism for accessing the multiple channels based on a second transmission after the first transmission.

在一些实施例中，所述第一多信道接入机制包括：直连链路传输的多信道接入机制。 In some embodiments, the first multi-channel access mechanism includes: a multi-channel access mechanism for direct link transmission.

在一些实施例中，所述处理模块用于，所述第一传输包括直连链路同步广播块，根据所述第一传输之后的第二传输确定用于接入所述多个信道的多信道接入机制，或者，确定所述多个信道中在所述第一传输之后存在所述第二传输的第一部分信道，确定在所述第一部分信道进行直连链路同步广播块重复传输。In some embodiments, the processing module is used to, when the first transmission includes a direct link synchronization broadcast block, determine a multi-channel access mechanism for accessing the multiple channels based on a second transmission after the first transmission, or determine a first portion of channels among the multiple channels where the second transmission exists after the first transmission, and determine to perform repeated transmission of the direct link synchronization broadcast block on the first portion of channels.

在一些实施例中，所述处理模块用于，确定用于接入所述第一部分信道的多信道接入机制包括所述第一多信道接入机制。In some embodiments, the processing module is used to determine that the multi-channel access mechanism used to access the first part of channels includes the first multi-channel access mechanism.

在一些实施例中，所述处理模块还用于，当在所述第一部分信道进行直连链路同步广播块重复传输，所述第一部分信道包括不连续的信道，且所述第一终端不支持在不连续的信道上进行直连链路同步广播块重复传输，确定在所述不连续的信道之间的信道上进行直连链路同步广播块重复传输。In some embodiments, the processing module is also used to, when direct link synchronization broadcast block repeated transmission is performed on the first part of the channel, the first part of the channel includes discontinuous channels, and the first terminal does not support direct link synchronization broadcast block repeated transmission on discontinuous channels, determine to perform direct link synchronization broadcast block repeated transmission on the channel between the discontinuous channels.

在一些实施例中，所述处理模块用于，确定所述多个信道中在所述第一传输之后存在所述第二传输的第一部分信道；根据所述第二传输确定用于接入所述第一部分信道的多信道接入机制。In some embodiments, the processing module is used to determine a first portion of channels among the multiple channels where the second transmission exists after the first transmission; and determine a multi-channel access mechanism for accessing the first portion of channels based on the second transmission.

在一些实施例中，所述处理模块用于，所述第二传输包括占用多个信道的物理直连链路信道，确定用于接入所述第一部分信道的多信道接入机制为所述第一多信道接入机制。In some embodiments, the processing module is used to, when the second transmission includes a physical direct link channel occupying multiple channels, determine a multi-channel access mechanism for accessing the first part of channels as the first multi-channel access mechanism.

在一些实施例中，所述处理模块用于，所述第二传输包括占用一个信道的物理直连链路信道，确定用于接入所述多个信道的多信道接入机制为所述第二多信道接入机制。In some embodiments, the processing module is used to, when the second transmission includes a physical direct link channel occupying one channel, determine that a multi-channel access mechanism for accessing the multiple channels is the second multi-channel access mechanism.

在一些实施例中，所述处理模块还用于，确定所述多个信道中在所述第一传输之后不存在所述第二传输的第二部分信道；根据所述第二部分信道中信道的数量确定用于接入所述第二部分信道的多信道接入机制。In some embodiments, the processing module is also used to determine a second portion of channels among the multiple channels in which the second transmission does not exist after the first transmission; and determine a multi-channel access mechanism for accessing the second portion of channels based on the number of channels in the second portion of channels.

在一些实施例中，所述处理模块用于，所述第二部分信道中信道的数量为多个，确定用于接入所述第二部分信道的多信道接入机制包括所述第二多信道接入机制；所述第二部分信道中信道的数量为一个，确定用于接入所述第二部分信道的信道接入机制包括单信道接入机制。In some embodiments, the processing module is used to: the number of channels in the second part of channels is multiple, and the multi-channel access mechanism for accessing the second part of channels includes the second multi-channel access mechanism; the number of channels in the second part of channels is one, and the channel access mechanism for accessing the second part of channels includes Including single channel access mechanism.

在一些实施例中，所述通信模块用于，成功接入所述第一部分信道，在所述第一部分信道进行传输；成功接入所述第二部分信道，在所述第二部分信道进行传输。In some embodiments, the communication module is used to successfully access the first portion of channels and transmit on the first portion of channels; and successfully access the second portion of channels and transmit on the second portion of channels.

在一些实施例中，所述物理直连链路信道包括以下至少之一：物理直连链路控制信道；物理直连链路共享信道。In some embodiments, the physical direct link channel includes at least one of the following: a physical direct link control channel; a physical direct link shared channel.

在一些实施例中，所述第二传输包括以下至少之一：所述第一终端发送的第二传输；第一终端以外的第二终端发送的第二传输，其中，所述第一终端与所述第二终端共享所述多个信道。In some embodiments, the second transmission includes at least one of: a second transmission sent by the first terminal; a second transmission sent by a second terminal other than the first terminal, wherein the first terminal shares the plurality of channels with the second terminal.

在一些实施例中，所述处理模块还用于，所述第一间隔大于16微秒，进行所述第二传输时进行信道占用时间恢复。In some embodiments, the processing module is further configured to, when the first interval is greater than 16 microseconds, perform channel occupancy time recovery during the second transmission.

图8是根据本公开的实施例示出的一种终端的示意框图。如图8所示，所述终端包括：通信模块801。Fig. 8 is a schematic block diagram of a terminal according to an embodiment of the present disclosure. As shown in Fig. 8 , the terminal includes: a communication module 801 .

在一些实施例中，所述通信模块用于在非授权频段的多个信道上通过直连链路与上述任一实施例所述的第一终端通信。In some embodiments, the communication module is used to communicate with the first terminal described in any of the above embodiments through a direct link on multiple channels in an unlicensed frequency band.

对于装置实施例而言，由于其基本对应于方法实施例，所以相关之处参见方法实施例的部分说明即可。以上所描述的装置实施例仅仅是示意性的，其中，所述作为分离部件说明的模块可以是或者也可以不是物理上分开的，作为模块显示的部件可以是或者也可以不是物理模块，即可以位于一个地方，或者也可以分布到多个网络模块上。可以根据实际的需要选择其中的部分或者全部模块来实现本实施例方案的目的。本领域普通技术人员在不付出创造性劳动的情况下，即可以理解并实施。For the device embodiment, since it basically corresponds to the method embodiment, the relevant parts refer to the partial description of the method embodiment. The device embodiment described above is only schematic, wherein the modules described as separate components may or may not be physically separated, and the components displayed as modules may or may not be physical modules, that is, they may be located in one place, or they may be distributed on multiple network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative work.

本公开实施例还提出用于实现以上任一方法的装置，例如，提出一装置，上述装置包括用以实现以上任一方法中终端所执行的各步骤的单元或模块。再如，还提出另一装置，包括用以实现以上任一方法中网络设备(例如接入网设备、核心网功能节点、核心网设备等)所执行的各步骤的单元或模块。The embodiments of the present disclosure also propose a device for implementing any of the above methods, for example, a device is proposed, the above device includes a unit or module for implementing each step performed by the terminal in any of the above methods. For another example, another device is also proposed, including a unit or module for implementing each step performed by a network device (such as an access network device, a core network function node, a core network device, etc.) in any of the above methods.

应理解以上装置中各单元或模块的划分仅是一种逻辑功能的划分，在实际实现时可以全部或部分集成到一个物理实体上，也可以物理上分开。此外，装置中的单元或模块可以以处理器调用软件的形式实现：例如装置包括处理器，处理器与存储器连接，存储器中存储有指令，处理器调用存储器中存储的指令，以实现以上任一方法或实现上述装置各单元或模块的功能，其中处理器例如为通用处理器，例如中央处理单元(Central Processing Unit，CPU)或微处理器，存储器为装置内的存储器或装置外的存储器。或者，装置中的单元或模块可以以硬件电路的形式实现，可以通过对硬件电路的设计实现部分或全部单元或模块的功能，上述硬件电路可以理解为一个或多个处理器；例如，在一种实现中，上述硬件电路为专用集成电路(application-specific integrated circuit，ASIC)，通过对电路内元件逻辑关系的设计，实现以上部分或全部单元或模块的功能；再如，在另一种实现中，上述硬件电路为可以通过可编程逻辑器件(programmable logic device，PLD)实现，以现场可编程门阵列(Field Programmable Gate Array，FPGA)为例，其可以包括大量逻辑门电路，通过配置文件来配置逻辑门电路之间的连接关系，从而实现以上部分或全部单元或模块的功能。以上装置的所有单元或模块可以全部通过处理器调用软件的形式实现，或全部通过硬件电路的形式实现，或部分通过处理器调用软件的形式实现，剩余部分通过硬件电路的形式实现。It should be understood that the division of the units or modules in the above device is only a division of logical functions, and in actual implementation, they can be fully or partially integrated into one physical entity, or they can be physically separated. In addition, the units or modules in the device can be implemented in the form of a processor calling software: for example, the device includes a processor, the processor is connected to a memory, and instructions are stored in the memory. The processor calls the instructions stored in the memory to implement any of the above methods or implement the functions of the units or modules of the above device, wherein the processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory inside the device or a memory outside the device. Alternatively, the units or modules in the device may be implemented in the form of hardware circuits, and the functions of some or all of the units or modules may be realized by designing the hardware circuits. The hardware circuits may be understood as one or more processors. For example, in one implementation, the hardware circuits are application-specific integrated circuits (ASICs), and the functions of some or all of the above units or modules are realized by designing the logical relationship of the components within the circuits. For another example, in another implementation, the hardware circuits may be implemented by programmable logic devices (PLDs). For example, field programmable gate arrays (FPGAs) may include a large number of logic gate circuits, and the connection relationship between the logic gate circuits may be configured by configuration files, thereby realizing the functions of some or all of the above units or modules. All units or modules of the above devices may be called by the processor using software. The present invention may be implemented in the form of a software component, or entirely implemented in the form of a hardware circuit, or partially implemented in the form of a processor calling software and the rest implemented in the form of a hardware circuit.

在本公开实施例中，处理器是具有信号处理能力的电路，在一种实现中，处理器可以是具有指令读取与运行能力的电路，例如中央处理单元(Central Processing Unit，CPU)、微处理器、图形处理器(graphics processing unit，GPU)(可以理解为微处理器)、或数字信号处理器(digital signal processor，DSP)等；在另一种实现中，处理器可以通过硬件电路的逻辑关系实现一定功能，上述硬件电路的逻辑关系是固定的或可以重构的，例如处理器为专用集成电路(application-specific integrated circuit，ASIC)或可编程逻辑器件(programmable logic device，PLD)实现的硬件电路,例如FPGA。在可重构的硬件电路中，处理器加载配置文档，实现硬件电路配置的过程，可以理解为处理器加载指令，以实现以上部分或全部单元或模块的功能的过程。此外，还可以是针对人工智能设计的硬件电路，其可以理解为ASIC，例如神经网络处理单元(Neural Network Processing Unit，NPU)、张量处理单元(Tensor Processing Unit，TPU)、深度学习处理单元(Deep learning Processing Unit，DPU)等。In the disclosed embodiments, the processor is a circuit with signal processing capability. In one implementation, the processor may be a circuit with instruction reading and running capability, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which may be understood as a microprocessor), or a digital signal processor (DSP); in another implementation, the processor may implement certain functions through the logical relationship of a hardware circuit, and the logical relationship of the above hardware circuit may be fixed or reconfigurable, such as a hardware circuit implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document to implement the hardware circuit configuration may be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. In addition, it can also be a hardware circuit designed for artificial intelligence, which can be understood as ASIC, such as Neural Network Processing Unit (NPU), Tensor Processing Unit (TPU), Deep Learning Processing Unit (DPU), etc.

图9A是本公开实施例提出的通信设备9100的结构示意图。通信设备9100可以是网络设备(例如接入网设备、核心网设备等)，也可以是终端(例如用户设备等)，也可以是支持网络设备实现以上任一方法的芯片、芯片系统、或处理器等，还可以是支持终端实现以上任一方法的芯片、芯片系统、或处理器等。通信设备9100可用于实现上述方法实施例中描述的方法，具体可以参见上述方法实施例中的说明。9A is a schematic diagram of the structure of a communication device 9100 proposed in an embodiment of the present disclosure. The communication device 9100 may be a network device (e.g., an access network device, a core network device, etc.), or a terminal (e.g., a user device, etc.), or a chip, a chip system, or a processor that supports a network device to implement any of the above methods, or a chip, a chip system, or a processor that supports a terminal to implement any of the above methods. The communication device 9100 may be used to implement the method described in the above method embodiment, and the details may refer to the description in the above method embodiment.

如图9A所示，通信设备9100包括一个或多个处理器9101。处理器9101可以是通用处理器或者专用处理器等，例如可以是基带处理器或中央处理器。基带处理器可以用于对通信协议以及通信数据进行处理，中央处理器可以用于对通信装置(如，基站、基带芯片，终端设备、终端设备芯片，DU或CU等)进行控制，执行程序，处理程序的数据。可选地，通信设备9100用于执行以上任一方法。可选地，一个或多个处理器9101用于调用指令以使得通信设备9100执行以上任一方法。As shown in FIG9A , the communication device 9100 includes one or more processors 9101. The processor 9101 may be a general-purpose processor or a dedicated processor, for example, a baseband processor or a central processing unit. The baseband processor may be used to process the communication protocol and the communication data, and the central processing unit may be used to control the communication device (such as a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute the program, and process the data of the program. Optionally, the communication device 9100 is used to execute any of the above methods. Optionally, one or more processors 9101 are used to call instructions so that the communication device 9100 executes any of the above methods.

在一些实施例中，通信设备9100还包括一个或多个收发器9102。在通信设备9100包括一个或多个收发器9102时，收发器9102执行上述方法中的发送和/或接收等通信步骤(例如步骤S201、S202)，但不限于此)中的至少一者，处理器9101执行其他步骤(例如步骤S201、S202，但不限于此)中的至少一者。在可选的实施例中，收发器可以包括接收器和/或发送器，接收器和发送器可以是分离的，也可以集成在一起。可选地，收发器、收发单元、收发机、收发电路、接口电路、接口等术语可以相互替换，发送器、发送单元、发送机、发送电路等术语可以相互替换，接收器、接收单元、接收机、接收电路等术语可以相互替换。In some embodiments, the communication device 9100 further includes one or more transceivers 9102. When the communication device 9100 includes one or more transceivers 9102, the transceiver 9102 performs at least one of the communication steps such as sending and/or receiving in the above method (for example, steps S201, S202), but not limited thereto), and the processor 9101 performs at least one of the other steps (for example, steps S201, S202, but not limited thereto). In an optional embodiment, the transceiver may include a receiver and/or a transmitter, and the receiver and the transmitter may be separate or integrated together. Optionally, the terms transceiver, transceiver unit, transceiver, transceiver circuit, interface circuit, interface, etc. may be replaced with each other, the terms transmitter, transmitting unit, transmitter, transmitting circuit, etc. may be replaced with each other, and the terms receiver, receiving unit, receiver, receiving circuit, etc. may be replaced with each other.

在一些实施例中，通信设备9100还包括用于存储数据的一个或多个存储器9103。可选地，全部或部分存储器9103也可以处于通信设备9100之外。在可选的实施例中，通信设备9100可以包括一个或多个接口电路9104。可选地，接口电路9104与存储器9102连接，接口电路9104可用于从存储器9102或其他装置接收数据，可用于向存储器9102或其他装置发送数据。例如，接口电路9104可读取存储器9102中存储的数据，并将该数据发送给处理器9101。In some embodiments, the communication device 9100 further includes one or more memories 9103 for storing data. Optionally, all or part of the memories 9103 may also be outside the communication device 9100. In an optional embodiment, the communication device 9100 may include one or more interface circuits 9104. Optionally, the interface circuit 9104 is connected to the memory 9102, and the interface circuit 9104 may be used to receive data from the memory 9102 or other devices, and may be used to send data to the memory 9102 or other devices. For example, the interface circuit 9104 may read the data stored in the memory 9102 and send the data to the processor 9101.

以上实施例描述中的通信设备9100可以是网络设备或者终端，但本公开中描述的通信设备9100的范围并不限于此，通信设备9100的结构可以不受图9A的限制。通信设备可以是独立的设备或者可以是较大设备的一部分。例如所述通信设备可以是：1)独立的集成电路IC，或芯片，或，芯片系统或子系统；(2)具有一个或多个IC的集合，可选地，上述IC集合也可以包括用于存储数据，程序的存储部件；(3)ASIC，例如调制解调器(Modem)；(4)可嵌入在其他设备内的模块；(5)接收机、终端设备、智能终端设备、蜂窝电话、无线设备、手持机、移动单元、车载设备、网络设备、云设备、人工智能设备等等；(6)其他等等。The communication device 9100 described in the above embodiments may be a network device or a terminal, but the scope of the communication device 9100 described in the present disclosure is not limited thereto, and the structure of the communication device 9100 may not be limited by FIG. 9A. The communication device may be an independent device or may be part of a larger device. For example, the communication device may be: 1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, Optionally, the above IC assembly may also include a storage component for storing data and programs; (3) ASIC, such as a modem; (4) modules that can be embedded in other devices; (5) receivers, terminal devices, intelligent terminal devices, cellular phones, wireless devices, handheld devices, mobile units, vehicle-mounted devices, network devices, cloud devices, artificial intelligence devices, etc.; (6) others, etc.

图9B是本公开实施例提出的芯片9200的结构示意图。对于通信设备9100可以是芯片或芯片系统的情况，可以参见图9B所示的芯片9200的结构示意图，但不限于此。9B is a schematic diagram of the structure of a chip 9200 provided in an embodiment of the present disclosure. In the case where the communication device 9100 may be a chip or a chip system, reference may be made to the schematic diagram of the structure of the chip 9200 shown in FIG. 9B , but the present disclosure is not limited thereto.

芯片9200包括一个或多个处理器9201。芯片9200用于执行以上任一方法。The chip 9200 includes one or more processors 9201. The chip 9200 is configured to execute any of the above methods.

在一些实施例中，芯片9200还包括一个或多个接口电路9202。可选地，接口电路、接口、收发管脚等术语可以相互替换。在一些实施例中，芯片9200还包括用于存储数据的一个或多个存储器9203。可选地，全部或部分存储器9203可以处于芯片9200之外。可选地，接口电路9202与存储器9203连接，接口电路9202可以用于从存储器9203或其他装置接收数据，接口电路9202可用于向存储器9203或其他装置发送数据。例如，接口电路9202可读取存储器9203中存储的数据，并将该数据发送给处理器9201。In some embodiments, the chip 9200 further includes one or more interface circuits 9202. Optionally, the terms interface circuit, interface, transceiver pin, etc. can be interchangeable. In some embodiments, the chip 9200 further includes one or more memories 9203 for storing data. Optionally, all or part of the memory 9203 can be outside the chip 9200. Optionally, the interface circuit 9202 is connected to the memory 9203, and the interface circuit 9202 can be used to receive data from the memory 9203 or other devices, and the interface circuit 9202 can be used to send data to the memory 9203 or other devices. For example, the interface circuit 9202 can read the data stored in the memory 9203 and send the data to the processor 9201.

在一些实施例中，接口电路9202执行上述方法中的发送和/或接收等通信步骤(例如步骤S201、S202，但不限于此)中的至少一者。接口电路9202执行上述方法中的发送和/或接收等通信步骤例如是指：接口电路9202执行处理器9201、芯片9200、存储器9203或收发器件之间的数据交互。在一些实施例中，处理器9201执行其他步骤(例如步骤S201、S202，但不限于此)中的至少一者。In some embodiments, the interface circuit 9202 performs at least one of the communication steps such as sending and/or receiving in the above method (for example, steps S201 and S202, but not limited thereto). The interface circuit 9202 performs the communication steps such as sending and/or receiving in the above method, for example, means that the interface circuit 9202 performs data interaction between the processor 9201, the chip 9200, the memory 9203, or the transceiver device. In some embodiments, the processor 9201 performs at least one of the other steps (for example, steps S201 and S202, but not limited thereto).

虚拟装置、实体装置、芯片等各实施例中所描述的各模块和/或器件可以根据情况任意组合或者分离。可选地，部分或全部步骤也可以由多个模块和/或器件协作执行，此处不做限定。The modules and/or devices described in the embodiments such as virtual devices, physical devices, chips, etc. can be combined or separated as needed. Optionally, some or all steps can also be performed by multiple modules and/or devices in collaboration, which is not limited here.

本公开还提出存储介质，上述存储介质上存储有指令，当上述指令在通信设备9100上运行时，使得通信设备9100执行以上任一方法。可选地，上述存储介质是电子存储介质。可选地，上述存储介质是计算机可读存储介质，但不限于此，其也可以是其他装置可读的存储介质。可选地，上述存储介质可以是非暂时性(non-transitory)存储介质，但不限于此，其也可以是暂时性存储介质。The present disclosure also proposes a storage medium, on which instructions are stored, and when the instructions are executed on the communication device 9100, the communication device 9100 executes any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but is not limited to this, and it can also be a storage medium readable by other devices. Optionally, the storage medium can be a non-transitory storage medium, but is not limited to this, and it can also be a temporary storage medium.

本公开还提出程序产品，上述程序产品被通信设备9100执行时，使得通信设备9100执行以上任一方法。可选地，上述程序产品是计算机程序产品。The present disclosure also proposes a program product, which, when executed by the communication device 9100, enables the communication device 9100 to execute any of the above methods. Optionally, the program product is a computer program product.

本公开还提出计算机程序，当其在计算机上运行时，使得计算机执行以上任一方法。 The present disclosure also proposes a computer program, which, when executed on a computer, causes the computer to execute any one of the above methods.

Claims

A channel access method, characterized in that it is performed by a first terminal, and the method includes:

triggering a channel access process for a plurality of channels in an unlicensed frequency band based on a first transmission on the direct link;

A multi-channel access mechanism for accessing the plurality of channels is determined based on a second transmission subsequent to the first transmission.

The method according to claim 1, characterized in that the multi-channel access mechanism includes at least one of the following:

A first multi-channel access mechanism;

Second multi-channel access mechanism.

The method according to claim 2, characterized in that the first multi-channel access mechanism comprises:

Multi-channel access mechanism for direct link transmission.

The method according to claim 2, characterized in that the second multi-channel access mechanism includes at least one of the following:

Type A1 multi-channel access mechanism for the physical direct link feedback channel;

Type A1 multi-channel access mechanism for direct link synchronous broadcast blocks;

Type A2 multi-channel access mechanism for the physical direct link feedback channel;

Type A2 multi-channel access mechanism for direct link synchronous broadcast blocks;

Type B1 multi-channel access mechanism for physical direct link feedback channel;

Type B1 multi-channel access mechanism for direct link synchronous broadcast blocks;

Type B2 multi-channel access mechanism for physical direct link feedback channel;

Type B2 multi-channel access mechanism for direct link synchronization broadcast blocks.

The method according to any one of claims 2 to 4, characterized in that the first transmission comprises at least one of the following:

Physical direct link feedback channel;

Direct link synchronization broadcast block.

The method according to claim 5, characterized in that the method further comprises:

The first transmission includes a direct link synchronization broadcast block, and a multi-channel access mechanism for accessing the multiple channels is determined based on a second transmission after the first transmission, or a first part of channels among the multiple channels where the second transmission exists after the first transmission is determined, and repeated transmission of the direct link synchronization broadcast block is determined on the first part of channels.

The method according to claim 6, characterized in that the method further comprises:

Determining a multi-channel access mechanism for accessing the first portion of channels includes the first multi-channel access mechanism.

When repeated transmission of direct link synchronization broadcast blocks is performed on the first part of the channels, the first part of the channels includes discontinuous channels, and the first terminal does not support repeated transmission of direct link synchronization broadcast blocks on discontinuous channels, it is determined to perform repeated transmission of direct link synchronization broadcast blocks on a channel between the discontinuous channels.

The method according to any one of claims 2 to 8, characterized in that the second transmission comprises at least one of the following:

A physical direct link channel that occupies multiple channels;

A physical direct link channel occupies one channel.

The method according to claim 9, characterized in that the determining of the multi-channel access mechanism for accessing the multiple channels according to the second transmission after the first transmission comprises:

Determine a first portion of channels among the plurality of channels where the second transmission occurs after the first transmission;

A multi-channel access mechanism for accessing the first portion of channels is determined based on the second transmission.

The method according to claim 10, characterized in that the determining, based on the second transmission, a multi-channel access mechanism for accessing the first portion of channels comprises:

The second transmission includes a physical direct link channel occupying multiple channels, and a multi-channel access mechanism used to access the first part of channels is determined to be the first multi-channel access mechanism.

The second transmission includes a physical direct link channel occupying one channel, and a multi-channel access mechanism for accessing the multiple channels is determined to be the second multi-channel access mechanism.

The method according to any one of claims 10 to 12, characterized in that the method further comprises:

determining a second portion of channels of the plurality of channels where the second transmission does not exist after the first transmission;

A multi-channel access mechanism for accessing the second portion of channels is determined according to the number of channels in the second portion of channels.

The method according to claim 13, characterized in that the determining, according to the number of channels in the second part of channels, a multi-channel access mechanism for accessing the second part of channels comprises:

The number of channels in the second part of channels is multiple, and determining that the multi-channel access mechanism for accessing the second part of channels includes the second multi-channel access mechanism;

Wherein, the method further comprises:

The number of channels in the second part of channels is one, and the channel access mechanism determined to be used to access the second part of channels includes a single channel access mechanism.

The method according to claim 13 or 14, characterized in that the method further comprises at least one of the following

:

successfully accessing the first part of channels and transmitting on the first part of channels;

The second part of the channels is successfully accessed, and transmission is performed on the second part of the channels.

The method according to any one of claims 9 to 15, characterized in that the physical direct link channel comprises at least one of the following:

Physical direct link control channel;

Physical direct links share the channel.

The method according to any one of claims 1 to 16, characterized in that the second transmission comprises at least one of the following:

a second transmission sent by the first terminal;

A second transmission sent by a second terminal other than the first terminal, wherein the first terminal shares the plurality of channels with the second terminal.

The method according to any one of claims 1 to 17, characterized in that the second transmission after the first transmission comprises at least one of the following:

a second transmission adjacent to the first transmission in the time domain;

A second transmission having a first interval in time domain with respect to the first transmission being less than an interval threshold.

The method according to claim 18, characterized in that the method further comprises:

The first interval is greater than 16 microseconds, and channel occupancy time recovery is performed when performing the second transmission.

A communication method, characterized in that it is performed by a second terminal, and the method comprises:

Communicate with the first terminal according to any one of claims 1 to 19 via a direct link on multiple channels in an unlicensed frequency band.

A terminal, characterized by comprising:

one or more processors;

The terminal is used to execute the channel access method according to any one of claims 1 to 19.

A terminal, characterized by comprising:

one or more processors;

Wherein, the terminal is used to execute the communication method described in claim 20.

A communication system, characterized in that it includes a first terminal and a second terminal, wherein the first terminal is configured to implement the channel access method described in any one of claims 1 to 19, and the second terminal is configured to implement the communication method described in claim 20.

A storage medium storing instructions, characterized in that when the instructions are executed on a communication device, the communication device executes the channel access method described in any one of claims 1 to 19, and/or the communication method described in claim 20.