CN113133052A

CN113133052A - Path selection method and device and IAB base station

Info

Publication number: CN113133052A
Application number: CN202010029980.3A
Authority: CN
Inventors: 陈晶晶; 徐珉
Original assignee: China Mobile Communications Group Co Ltd; Research Institute of China Mobile Communication Co Ltd
Current assignee: China Mobile Communications Group Co Ltd; Research Institute of China Mobile Communication Co Ltd
Priority date: 2020-01-13
Filing date: 2020-01-13
Publication date: 2021-07-16
Anticipated expiration: 2040-01-13
Also published as: CN113133052B

Abstract

The present disclosure provides a path selection method, device, and IAB base station. The method includes: receiving path selection information, where the path selection information includes at least one of the following: a path identifier of the selected path; a last hop IAB of the selected path The identification of the base station; the information of the N-hop IAB base station in the selected path, the N-hop IAB base station includes at least the first IAB base station, and N is an integer greater than 0; The IAB base station that selects the information can quickly and efficiently complete the path selection, and can also simplify the information processing of each IAB base station.

Description

Path selection method, device and IAB base station

技术领域technical field

本公开涉及通信技术领域，尤其是指一种路径选择方法、装置及IAB基站。The present disclosure relates to the field of communication technologies, and in particular, to a path selection method, an apparatus, and an IAB base station.

背景技术Background technique

接入和回传一体化(Integrated Access&Backhaul，IAB)，是指基站集成了无线接入链路和无线回传链路，减轻部署有线传输网络的负担。其中接入链路为终端与IAB基站之间的通信链路，无线回传链路为IAB基站之间的通信链路。IAB架构下，IAB-donor基站(归属IAB基站)和IAB基站(可以理解为非归属IAB基站)可以具备类似中继的功能。IAB donor基站向IAB基站提供无线回传功能，并提供终端与核心网的接口。IAB基站包含了基站的功能和移动终端(Mobile-Termination，MT)功能。其中MT功能定义为移动终端的一部分功能，集成于IAB基站之中，通过无线回传链路与IAB donor基站或其他的IAB基站相连接。Integrated Access & Backhaul (IAB) means that a base station integrates a wireless access link and a wireless backhaul link to reduce the burden of deploying a wired transmission network. The access link is the communication link between the terminal and the IAB base station, and the wireless backhaul link is the communication link between the IAB base stations. Under the IAB architecture, the IAB-donor base station (home IAB base station) and the IAB base station (which can be understood as a non-home IAB base station) can have relay-like functions. The IAB donor base station provides the wireless backhaul function to the IAB base station and provides the interface between the terminal and the core network. The IAB base station includes the function of the base station and the function of a mobile terminal (Mobile-Termination, MT). The MT function is defined as a part of the function of the mobile terminal, which is integrated in the IAB base station and connected to the IAB donor base station or other IAB base stations through a wireless backhaul link.

在现有的IAB拓扑结构中，从IAB donor基站到终端，中间会经过多个IAB基站的中继，也即经过多跳(multiple hop)才实现了IAB donor基站和终端之间的信息传输。终端与上一级IAB基站之间的链路是无线接入链路，IAB基站之间的链路以及IAB基站与IAB donor基站之间的链路是无线回传链路。在终端侧看来，IAB基站就是正常的小区，终端可以通过小区搜索和小区接入过程完成小区选择。终端完成小区接入之后，被接入的IAB基站会向上通过多跳向IABdonor基站通知该信息，后续有数据传输需求时，IAB donor基站会经过路由选择，把数据传递给终端接入的IAB基站，进而传递给终端。例如，如图1所示，终端1接入了IAB 6，IAB6会经过多个中间IAB基站中转，把终端1接入了IAB6这个消息通知IAB donor基站，IAB donor基站就知道通过IAB6可以找到终端1。当有数据传输需求时，IAB donor基站会经过路由选择，把数据传递给IAB6，IAB6再传递给终端。In the existing IAB topology, from the IAB donor base station to the terminal, there will be relays of multiple IAB base stations in the middle, that is, the information transmission between the IAB donor base station and the terminal is realized after multiple hops. The link between the terminal and the upper-level IAB base station is a wireless access link, and the link between the IAB base stations and the link between the IAB base station and the IAB donor base station is a wireless backhaul link. From the terminal side, the IAB base station is a normal cell, and the terminal can complete cell selection through cell search and cell access procedures. After the terminal completes the cell access, the connected IAB base station will notify the IABdonor base station of the information through multiple hops. When there is a need for data transmission in the future, the IAB donor base station will pass the route selection and transmit the data to the IAB base station accessed by the terminal. , which is then passed to the terminal. For example, as shown in Figure 1, when terminal 1 accesses IAB 6, IAB 6 will transit through multiple intermediate IAB base stations, and notify the IAB donor base station that terminal 1 has access to IAB 6, and the IAB donor base station knows that the terminal can be found through IAB 6 1. When there is a need for data transmission, the IAB donor base station will pass the route selection and deliver the data to the IAB6, and the IAB6 will then deliver it to the terminal.

如前所述，IAB网络通过多跳(经由多个IAB基站中转)才能实现IAB donor基站和目的IAB基站之间的信息交互。As mentioned above, the information exchange between the IAB donor base station and the destination IAB base station can only be realized through multi-hop (transit via multiple IAB base stations) in the IAB network.

发明内容SUMMARY OF THE INVENTION

本公开的至少一个实施例提供了一种路径选择方法、装置及IAB基站，解决了现有技术中由于归属IAB基站和目标IAB基站之间需要经过多跳才能实现信息交互但是路径选择的确定并不明确的问题。At least one embodiment of the present disclosure provides a path selection method, device, and IAB base station, which solve the problem that in the prior art, since the home IAB base station and the target IAB base station need to go through multiple hops to realize information exchange, but the determination of path selection is not ambiguous question.

根据本公开的一个方面，至少一个实施例提供了一种路径选择方法，应用于第一接入和回传一体化IAB基站，包括：According to one aspect of the present disclosure, at least one embodiment provides a path selection method, applied to a first access and backhaul integrated IAB base station, including:

接收路径选择信息，所述路径选择信息包括下述至少一项：Receive path selection information, where the path selection information includes at least one of the following:

所选路径的路径标识；The path ID of the selected path;

所选路径的最后一跳IAB基站的标识；The identity of the last hop IAB base station of the selected path;

所选路径中N跳IAB基站的信息，所述N跳IAB基站至少包括所述第一IAB基站，N为大于0的整数。Information of the N-hop IAB base station in the selected path, the N-hop IAB base station includes at least the first IAB base station, and N is an integer greater than 0.

此外，根据本公开的至少一个实施例，所选路径中N跳IAB基站的信息包括：Furthermore, according to at least one embodiment of the present disclosure, the information of the N-hop IAB base station in the selected path includes:

所选路径中N跳IAB基站的标识以及所述N跳IAB基站中每个IAB基站的下一跳IAB基站的标识；The identifier of the N-hop IAB base station in the selected path and the identifier of the next-hop IAB base station of each IAB base station in the N-hop IAB base station;

或者，or,

所述N跳IAB基站中每个IAB基站的下一跳IAB基站的标识。The identifier of the next-hop IAB base station of each IAB base station in the N-hop IAB base station.

此外，根据本公开的至少一个实施例，所述路径选择信息由归属IAB基站封装，或者，所述路径选择信息由所述第一IAB基站的上M跳IAB基站中的任一IAB基站封装；M为大于0的整数。In addition, according to at least one embodiment of the present disclosure, the path selection information is encapsulated by a home IAB base station, or the path selection information is encapsulated by any IAB base station in the upper M-hop IAB base station of the first IAB base station; M is an integer greater than 0.

此外，根据本公开的至少一个实施例，所述接收路径选择信息包括：Furthermore, according to at least one embodiment of the present disclosure, the receiving path selection information includes:

接收第一回程适配协议BAP包，所述第一BAP包包括N个比特组，一个比特组用于指示一跳目标IAB基站的信息；每个比特组包括至少一个比特；receiving a first backhaul adaptation protocol BAP packet, where the first BAP packet includes N bit groups, and one bit group is used to indicate information of a hop target IAB base station; each bit group includes at least one bit;

其中，一个比特组包含一个第一类型比特和一个第二类型比特；所述第一类型比特用于指示目标IAB基站的标识，所述第二类型比特用于指示目标IAB基站的下一跳IAB基站的标识。One bit group includes a first type bit and a second type bit; the first type bit is used to indicate the identity of the target IAB base station, and the second type bit is used to indicate the next hop IAB of the target IAB base station The identity of the base station.

接收第二BAP包，所述第二BAP包包括第一数据区和第二数据区；其中，所述第一数据区的N个比特组分别用于指示对应的IAB基站的标识，所述第二数据区的N个比特组分别用于指示IAB基站的下一跳IAB基站的标识；每个比特组包括至少一个比特。Receive a second BAP packet, where the second BAP packet includes a first data area and a second data area; wherein, the N bit groups in the first data area are respectively used to indicate the identity of the corresponding IAB base station, and the first data area The N bit groups in the second data area are respectively used to indicate the identifier of the next-hop IAB base station of the IAB base station; each bit group includes at least one bit.

接收第三BAP包，所述第三BAP包至少包括N个比特组，一个比特组用于指示一跳IAB基站的下一跳IAB基站的标识，其中，N个IAB基站中每个IAB基站的下一跳IAB基站的标识按照路径选择顺序占用第三BAP包的N个比特组；每个比特组包括至少一个比特。Receive a third BAP packet, where the third BAP packet includes at least N bit groups, and one bit group is used to indicate the identifier of the next-hop IAB base station of the one-hop IAB base station, wherein the identifier of each IAB base station in the N IAB base stations is The identifier of the next-hop IAB base station occupies N bit groups of the third BAP packet according to the path selection sequence; each bit group includes at least one bit.

此外，根据本公开的至少一个实施例，所述接收路径选择信息，包括：In addition, according to at least one embodiment of the present disclosure, the receiving path selection information includes:

接收携带所述路径选择信息的第四BAP包；receiving a fourth BAP packet carrying the path selection information;

所述方法还包括以下至少之一：The method also includes at least one of the following:

将所述第四BAP包中所述第一IAB基站的信息删除；Deleting the information of the first IAB base station in the fourth BAP packet;

将删除后的第四BAP包发送给所述第一IAB基站的下一跳IAB基站。Send the deleted fourth BAP packet to the next-hop IAB base station of the first IAB base station.

根据本公开的另一个方面，至少一个实施例提供了一种路径选择方法，应用于第二接入和回传一体化IAB基站，包括：According to another aspect of the present disclosure, at least one embodiment provides a path selection method, applied to a second access and backhaul integrated IAB base station, including:

向第一IAB基站发送路径选择信息，所述路径选择信息包括下述至少一项：Send path selection information to the first IAB base station, where the path selection information includes at least one of the following:

所选路径的路径标识；The path ID of the selected path;

所选路径中N跳IAB基站的信息，所述N跳IAB基站至少包括所述第一IAB基站的下一跳IAB基站，N为大于0的整数。Information of the N-hop IAB base station in the selected path, the N-hop IAB base station at least includes the next-hop IAB base station of the first IAB base station, and N is an integer greater than 0.

或者，or,

此外，根据本公开的至少一个实施例，所述路径选择信息由归属IAB基站封装，或者，所述路径选择信息由所述第二IAB基站或第二IAB基站的上P跳IAB基站中的任一IAB基站封装；P为大于0的整数。In addition, according to at least one embodiment of the present disclosure, the path selection information is encapsulated by the home IAB base station, or the path selection information is encapsulated by any of the second IAB base station or the upper P-hop IAB base station of the second IAB base station. An IAB base station package; P is an integer greater than 0.

此外，根据本公开的至少一个实施例，所述方法还包括：Furthermore, according to at least one embodiment of the present disclosure, the method further includes:

在所述路径选择信息由所述第二IAB基站封装、且第二IAB基站对所述路径选择信息进行了修改操作的情况下，向归属IAB基站发送反馈信息；所述反馈信息包含下述至少一项：When the path selection information is encapsulated by the second IAB base station and the second IAB base station performs a modification operation on the path selection information, feedback information is sent to the home IAB base station; the feedback information includes at least the following: One:

修改后的所选路径的N跳IAB基站的标识；The identity of the N-hop IAB base station of the modified selected path;

修改原因。Modify reason.

此外，根据本公开的至少一个实施例，所述向第一IAB基站发送路径选择信息包括：In addition, according to at least one embodiment of the present disclosure, the sending the path selection information to the first IAB base station includes:

向第一IAB基站发送第一回程适配协议BAP包，所述第一BAP包包括N个比特组，一个比特组用于指示一跳目标IAB基站的信息；每个比特组包括至少一个比特；sending a first backhaul adaptation protocol BAP packet to the first IAB base station, where the first BAP packet includes N bit groups, and one bit group is used to indicate the information of the one-hop target IAB base station; each bit group includes at least one bit;

向第一IAB基站发送第二BAP包，所述第二BAP包包括第一数据区和第二数据区；其中，所述第一数据区的N个比特组分别用于指示对应的IAB基站的标识，所述第二数据区的N个比特组分别用于指示IAB基站的下一跳IAB基站的标识；每个比特组包括至少一个比特。Send a second BAP packet to the first IAB base station, where the second BAP packet includes a first data area and a second data area; wherein, the N bit groups in the first data area are respectively used to indicate the corresponding IAB base station identifier, the N bit groups in the second data area are respectively used to indicate the identifier of the next-hop IAB base station of the IAB base station; each bit group includes at least one bit.

向第一IAB基站发送第三BAP包，所述第三BAP包至少包括N个比特组，一个比特组用于指示一跳IAB基站的下一跳IAB基站的标识，其中，N个IAB基站中每个IAB基站的下一跳IAB基站的标识按照路径选择顺序占用第三BAP包的N个比特组；每个比特组包括至少一个比特。Send a third BAP packet to the first IAB base station, where the third BAP packet includes at least N bit groups, and one bit group is used to indicate the identifier of the next-hop IAB base station of the one-hop IAB base station, wherein, among the N IAB base stations The identifier of the next-hop IAB base station of each IAB base station occupies N bit groups of the third BAP packet according to the path selection sequence; each bit group includes at least one bit.

根据本公开的另一个方面，至少一个实施例提供了一种路径选择装置，应用于第一IAB基站，包括：According to another aspect of the present disclosure, at least one embodiment provides a path selection apparatus, applied to a first IAB base station, including:

接收模块，用于接收路径选择信息，所述路径选择信息包括下述至少一项：A receiving module, configured to receive path selection information, where the path selection information includes at least one of the following:

所选路径的路径标识；The path ID of the selected path;

根据本公开的另一个方面，至少一个实施例提供了一种接入和回传一体化IAB基站，所述IAB基站为第一IAB基站，包括处理器和收发器，所述收发器在处理器的控制下接收和发送数据，所述处理器用于执行以下操作：According to another aspect of the present disclosure, at least one embodiment provides an integrated access and backhaul IAB base station, the IAB base station is a first IAB base station, and includes a processor and a transceiver, the transceiver is in the processor to receive and transmit data under the control of the processor, the processor is used to perform the following operations:

所选路径的路径标识；The path ID of the selected path;

根据本公开的另一个方面，至少一个实施例提供了一种路径选择装置，应用于第二IAB基站，包括：According to another aspect of the present disclosure, at least one embodiment provides a path selection apparatus, applied to a second IAB base station, including:

发送模块，用于向第一IAB基站发送路径选择信息，所述路径选择信息包括下述至少一项：A sending module, configured to send path selection information to the first IAB base station, where the path selection information includes at least one of the following:

所选路径的路径标识；The path ID of the selected path;

根据本公开的另一个方面，至少一个实施例提供了一种接入和回传一体化IAB基站，所述IAB基站为第二IAB基站，包括处理器和收发器，所述收发器在处理器的控制下接收和发送数据，所述处理器用于执行以下操作：According to another aspect of the present disclosure, at least one embodiment provides an integrated access and backhaul IAB base station, the IAB base station is a second IAB base station, and includes a processor and a transceiver, the transceiver is in the processor to receive and transmit data under the control of the processor, the processor is used to perform the following operations:

所选路径的路径标识；The path ID of the selected path;

根据本公开的另一个方面，至少一个实施例提供了一种IAB基站，包括存储器、处理器及存储在所述存储器上并可在所述处理器上运行的程序；其特征在于，所述处理器执行所述程序时实现如上所述的路径选择方法。According to another aspect of the present disclosure, at least one embodiment provides an IAB base station, including a memory, a processor, and a program stored on the memory and executable on the processor; characterized in that, the processing The path selection method as described above is implemented when the program is executed by the computer.

根据本公开的另一个方面，至少一个实施例提供了一种计算机可读存储介质，其上存储有计算机程序，该程序被处理器执行时实现如上所述的路径选择方法中的步骤。According to another aspect of the present disclosure, at least one embodiment provides a computer-readable storage medium having stored thereon a computer program, which when executed by a processor implements the steps in the path selection method as described above.

本公开的上述技术方案至少具有如下有益效果：The above-mentioned technical solutions of the present disclosure have at least the following beneficial effects:

本公开的至少一个实施例的路径选择方法、装置及IAB基站中，通过在路径选择信息中包括所选路径的路径标识、所选路径的最后一跳IAB基站的标识以及所选路径中N跳IAB基站的信息的至少一项，使得接收该路径选择信息的IAB基站可以快速高效完成路径选择，同时还可以简化每个IAB基站的信息处理。In the path selection method, apparatus, and IAB base station of at least one embodiment of the present disclosure, the path selection information includes the path identifier of the selected path, the identifier of the last hop IAB base station of the selected path, and the N hops in the selected path. At least one item of information of the IAB base station enables the IAB base station receiving the path selection information to quickly and efficiently complete the path selection, and at the same time, the information processing of each IAB base station can be simplified.

附图说明Description of drawings

图1表示现有技术中IAB的拓扑结构示例；Fig. 1 shows the topological structure example of IAB in the prior art;

图2表示本公开的至少一个实施例提供的路径选择方法的步骤示意图之一；FIG. 2 shows one of the schematic diagrams of the steps of the path selection method provided by at least one embodiment of the present disclosure;

图3表示本公开的至少一个实施例提供的路径选择方法中第一BAP包的示意图；3 is a schematic diagram of a first BAP packet in a path selection method provided by at least one embodiment of the present disclosure;

图4表示本公开的至少一个实施例提供的路径选择方法中第二BAP包的示意图；4 is a schematic diagram of a second BAP packet in a path selection method provided by at least one embodiment of the present disclosure;

图5表示本公开的至少一个实施例提供的路径选择方法中第三BAP包的示意图；5 is a schematic diagram of a third BAP packet in the path selection method provided by at least one embodiment of the present disclosure;

图6表示本公开的至少一个实施例提供的路径选择方法中BAP包的传递原理示意图；FIG. 6 is a schematic diagram showing the transmission principle of BAP packets in the path selection method provided by at least one embodiment of the present disclosure;

图7表示本公开的至少一个实施例提供的路径选择方法的步骤示意图之二；FIG. 7 shows the second schematic diagram of the steps of the path selection method provided by at least one embodiment of the present disclosure;

图8表示本公开的至少一个实施例提供的路径选择装置的结构示意图之一；FIG. 8 shows one of the schematic structural diagrams of the path selection apparatus provided by at least one embodiment of the present disclosure;

图9表示本公开的至少一个实施例提供的IAB基站的结构示意图；FIG. 9 is a schematic structural diagram of an IAB base station provided by at least one embodiment of the present disclosure;

图10表示本公开的至少一个实施例提供的路径选择装置的结构示意图之二。FIG. 10 shows the second schematic structural diagram of the path selection apparatus provided by at least one embodiment of the present disclosure.

具体实施方式Detailed ways

为使本公开要解决的技术问题、技术方案和优点更加清楚，下面将结合附图及具体实施例进行详细描述。In order to make the technical problems, technical solutions and advantages to be solved by the present disclosure more clear, detailed description will be given below with reference to the accompanying drawings and specific embodiments.

相关技术中，IAB网络通过多跳(经由多个IAB基站中转)才能实现IABdonor基站和目的IAB基站之间的信息交互。但是IAB donor基站与目的基站之间一般包括多条路径，每个IAB基站如何进行路径选择是目前尚未解决的问题。In the related art, the information exchange between the IABdonor base station and the destination IAB base station can only be realized by the IAB network through multi-hop (transit via multiple IAB base stations). However, there are generally multiple paths between the IAB donor base station and the destination base station, and how each IAB base station performs path selection is an unsolved problem at present.

如图2所示，本公开的至少一个实施例提供一种路径选择方法，应用于第一接入和回传一体化IAB基站，第一IAB基站为所选路径中任意一个IAB基站，包括：As shown in FIG. 2, at least one embodiment of the present disclosure provides a path selection method, which is applied to a first integrated IAB base station for access and backhaul, where the first IAB base station is any IAB base station in the selected path, including:

步骤21，接收路径选择信息，所述路径选择信息包括下述至少一项：Step 21: Receive path selection information, where the path selection information includes at least one of the following:

所选路径的路径标识(path ID)；The path ID of the selected path;

所选路径的最后一跳IAB基站的标识，例如，最后一跳IAB基站的地址，即Destination Address；The identifier of the last hop IAB base station of the selected path, for example, the address of the last hop IAB base station, that is, the Destination Address;

需要说明的是，本公开的至少一个实施例提供的路径选择方法既适用于上行方向也适用于下行方向，在此不做具体限定。其中，上行方向和下行方向是相对于归属IAB基站而言。It should be noted that the path selection method provided by at least one embodiment of the present disclosure is applicable to both the uplink direction and the downlink direction, which is not specifically limited herein. The uplink direction and the downlink direction are relative to the home IAB base station.

所选路径中N跳IAB基站的标识以及所述N跳IAB基站中每个IAB基站的下一跳IAB基站的标识；例如，N跳IAB基站的信息包括：第一跳IAB基站的标识、第二跳IAB基站的标识、第三跳IAB基站的标识，以及第一跳IAB基站的下一跳IAB基站的标识、第二跳IAB基站的下一跳IAB基站的标识、第三跳IAB基站的下一跳IAB基站的标识。The identifier of the N-hop IAB base station in the selected path and the identifier of the next-hop IAB base station of each IAB base station in the N-hop IAB base station; for example, the information of the N-hop IAB base station includes: the identifier of the first hop IAB base station, the The ID of the second-hop IAB base station, the ID of the third-hop IAB base station, the ID of the next-hop IAB base station of the first-hop IAB base station, the ID of the next-hop IAB base station of the second-hop IAB base station, the ID of the third-hop IAB base station The identifier of the next-hop IAB base station.

或者，所选路径中N跳IAB基站的信息包括：Or, the information of the N-hop IAB base station in the selected path includes:

所述N跳IAB基站中每个IAB基站的下一跳IAB基站的标识；例如，N跳IAB基站的信息包括：第一跳IAB基站的下一跳IAB基站的标识、第二跳IAB基站的下一跳IAB基站的标识、第三跳IAB基站的下一跳IAB基站的标识。The identifier of the next-hop IAB base station of each IAB base station in the N-hop IAB base station; for example, the information of the N-hop IAB base station includes: the identifier of the next-hop IAB base station of the first hop The identifier of the next hop IAB base station and the identifier of the next hop IAB base station of the third hop IAB base station.

例如，IAB基站对接下来的至少一跳IAB基站的标识进行了修改，则此种情况下该路径选择信息由IAB基站封装。For example, the IAB base station modifies the identifier of the next at least one hop IAB base station, and in this case, the path selection information is encapsulated by the IAB base station.

此外，根据本公开的至少一个实施例，上述路径选择信息的封装可以通过回程适配协议(Backhaul Adaptation Protocol，BAP)完成。此外上述路径选择信息可以承载在路由表中。In addition, according to at least one embodiment of the present disclosure, the encapsulation of the above-mentioned path selection information may be accomplished through a Backhaul Adaptation Protocol (BAP). In addition, the above-mentioned path selection information may be carried in the routing table.

例如，如图3所示，路径选择信息包括N跳的IAB基站的信息。Xi bits(第一类型比特，包含至少一个比特)和Yi bits(第二类型比特，包含至少一个比特)组成一个比特组，用于指示第i跳的IAB基站的信息，i∈(1,2,3,4……)。若X1bits标识的是IAB基站A，则路径选择信息中Y1bits标识的是IAB基站B；那么IAB基站A可以根据路径选择信息获知自己的下一跳IAB基站是IAB基站B。IAB基站A将BAP包传递到IAB基站B。IAB基站在路径选择信息中通过X2bits的标识确定自己的标识后，通过对应的Y2bits可以获取IAB基站B的下一跳IAB基站标识。以此类推，在此不一一枚举。For example, as shown in FIG. 3 , the path selection information includes the information of the N-hop IAB base station. Xi bits (the first type of bits, including at least one bit) and Yi bits (the second type of bits, including at least one bit) form a bit group, which is used to indicate the information of the i-th hop IAB base station, i∈(1,2 ,3,4...). If X1bits identifies IAB base station A, Y1bits in the path selection information identifies IAB base station B; then IAB base station A can know that its next hop IAB base station is IAB base station B according to the path selection information. IAB base station A delivers the BAP packet to IAB base station B. After the IAB base station determines its own identity through the X2bits identity in the path selection information, it can obtain the next-hop IAB base station identity of the IAB base station B through the corresponding Y2bits. By analogy, we will not enumerate them one by one here.

例如，如图4所示，路径选择信息包括N跳的IAB基站的信息。多个Xi bits封装在BAP包的第一数据区，多个Yi bits封装在BAP包的第二数据区，Xi bits和Yi bits用于指示第i跳的IAB基站的信息，i∈(1,2,3,4……)。IAB基站在第一数据区检测到自己的标识后，会在第二BAP包的第二数据区(即Yi比特)获取自己的下一跳IAB基站的标识。For example, as shown in FIG. 4 , the path selection information includes the information of the N-hop IAB base station. Multiple Xi bits are encapsulated in the first data area of the BAP packet, and multiple Yi bits are encapsulated in the second data area of the BAP packet. The Xi bits and Yi bits are used to indicate the information of the IAB base station of the ith hop, i∈(1, 2,3,4…). After the IAB base station detects its own identity in the first data area, it will acquire the identity of its own next-hop IAB base station in the second data area (ie, Yi bit) of the second BAP packet.

需要说明的是，上述第一BAP包或第二BAP包中的路径选择信息可以按路由顺序或路径选择顺序进行封装；或者，通过预先配置或网络配置的方式通知IAB基站处于路径选择信息中的顺序。例如，IAB基站需预先获知哪一个Xi bits对应当前的IAB基站。It should be noted that the path selection information in the above-mentioned first BAP packet or the second BAP packet may be encapsulated in the routing sequence or the path selection sequence; order. For example, the IAB base station needs to know in advance which Xi bits correspond to the current IAB base station.

例如，如图5所示，路径选择信息包括N跳的IAB基站的信息。Yi bits用于指示IAB基站的信息，由于多个Yi比特按路径选择顺序封装，每Yi bits用于指示当前IAB基站的下一跳IAB基站的标识；故不需要再通过Xi bits指示当前IAB基站的标识。For example, as shown in FIG. 5 , the path selection information includes the information of the N-hop IAB base station. Yi bits are used to indicate the information of the IAB base station. Since multiple Yi bits are encapsulated in the order of path selection, each Yi bits is used to indicate the identity of the next-hop IAB base station of the current IAB base station; therefore, it is not necessary to use Xi bits to indicate the current IAB base station. 's identification.

接收携带所述路径选择信息的第四BAP包；需要说明的是，该第四BAP包可以为上述第一BAP包、第二BAP包以及第三BAP包中的任意一种，在此不再重复描述；Receive the fourth BAP packet carrying the path selection information; it should be noted that the fourth BAP packet may be any one of the above-mentioned first BAP packet, second BAP packet and third BAP packet, which is not repeated here. repeat the description;

IAB基站接收到路径选择信息，可以在路径选择信息中删除自己的/已用的IAB基站信息。如果路径选择信息按路由顺序或者路径选择顺序封装接下来多跳的IAB基站信息，并且每个接收到路径选择信息的IAB基站，在向下一跳IAB基站进行发送的时候都删除自己的IAB基站的信息，那么每一个接收到路径选择信息的IAB基站，都可以明确当前路径选择信息中第一个IAB基站的信息是自己下一跳要采用的IAB基站。The IAB base station receives the path selection information, and can delete its own/used IAB base station information in the path selection information. If the path selection information encapsulates the IAB base station information of the next multi-hops in the routing order or the path selection order, and each IAB base station that receives the path selection information, deletes its own IAB base station when sending to the next hop IAB base station information, then each IAB base station that receives the path selection information can make it clear that the information of the first IAB base station in the current path selection information is the IAB base station to be used by its own next hop.

如图6所示，路径选择信息包括N跳IAB基站的信息。Yi比特指示IAB基站A的下一跳IAB基站的标识，Y(i+1)比特指示IAB基站B的下一跳IAB基站的标识，Y(i+2)比特指示IAB基站C的下一跳IAB基站的标识。由于多个Yi比特按路由顺序封装，当前IAB基站在向下一跳IAB基站发送路径选择信息的时候会删除自己的下一跳IAB基站的标识，因此，每个IAB基站接收到路径选择信息，其第一组Y比特即是当前IAB基站的下一跳IAB基站的标识。As shown in FIG. 6 , the path selection information includes the information of the N-hop IAB base station. Yi bit indicates the identity of the next hop IAB base station of IAB base station A, Y(i+1) bit indicates the identity of the next hop IAB base station of IAB base station B, Y(i+2) bit indicates the next hop of IAB base station C The identity of the IAB base station. Since multiple Yi bits are encapsulated in routing order, the current IAB base station will delete the identifier of its next-hop IAB base station when sending the path selection information to the next-hop IAB base station. Therefore, each IAB base station receives the path selection information, The first group of Y bits is the identifier of the next-hop IAB base station of the current IAB base station.

综上，本公开的至少一个实施例提供一种路径选择方法，在路径选择信息中包括多跳IAB基站标识和当前IAB基站的下一跳IAB基站的标识，或者，仅包括当前IAB基站的下一跳IAB基站的表述；本公开的至少一个实施例引入顺序告知方案，每个IAB基站在获知自己的下一跳IAB基站的标识之后，可在路径选择信息中删除自己的下一跳IAB基站的标识；本公开的至少一个实施例可快速高效完成路径选择，同时还可以简化每个IAB基站的信息处理。To sum up, at least one embodiment of the present disclosure provides a path selection method, where the path selection information includes a multi-hop IAB base station identifier and an identifier of the next-hop IAB base station of the current IAB base station, or only includes the downlink of the current IAB base station. Expression of one-hop IAB base station; at least one embodiment of the present disclosure introduces a sequence notification scheme, each IAB base station can delete its own next-hop IAB base station in the path selection information after learning the identity of its own next-hop IAB base station identification; at least one embodiment of the present disclosure can quickly and efficiently complete path selection, and can also simplify information processing of each IAB base station.

如图7所示，本发明实施例还提供一种路径选择方法，应用于第二接入和回传一体化IAB基站，第二IAB基站为第一IAB基站的上一跳IAB基站，所述第一IAB基站和所述第二IAB基站为所选路径中的IAB基站，包括：As shown in FIG. 7 , an embodiment of the present invention further provides a path selection method, which is applied to a second integrated IAB base station for access and backhaul, where the second IAB base station is the previous hop IAB base station of the first IAB base station, and the said The first IAB base station and the second IAB base station are the IAB base stations in the selected path, including:

步骤71，向第一IAB基站发送路径选择信息，所述路径选择信息包括下述至少一项：Step 71: Send path selection information to the first IAB base station, where the path selection information includes at least one of the following:

所选路径的路径标识(path ID)；The path ID of the selected path;

修改原因，例如路径阻塞、容量均衡、链路失败等。Modify the reason, such as path congestion, capacity balancing, link failure, etc.

例如，如图5所示，路径选择信息包括N跳的IAB基站的信息。Yi bits用于指示IAB基站的信息，由于多个Yi比特按路径选择顺序封装，每Yi bits用于指示当前IAB基站的下一跳IAB基站的标识；故不需要再通过Xi bits指示当前IAB基站的标识。For example, as shown in FIG. 5 , the path selection information includes the information of the N-hop IAB base station. Yi bits are used to indicate the information of the IAB base station. Since multiple Yi bits are encapsulated in the order of path selection, each Yi bit is used to indicate the identity of the next-hop IAB base station of the current IAB base station; therefore, it is not necessary to use Xi bits to indicate the current IAB base station. 's identification.

综上，本公开的至少一个实施例提供一种路径选择方法，在路径选择信息中包括多跳IAB基站标识和当前IAB基站的下一跳IAB基站的标识，或者，仅包括当前IAB基站的下一跳IAB基站的表述。本公开的至少一个实施例，引入顺序告知方案，每个IAB基站在获知自己的下一跳IAB基站的标识之后，可在路径选择信息中删除自己的下一跳IAB基站的标识；本公开的至少一个实施例可快速高效完成路径选择，同时还可以简化每个IAB基站的信息处理。To sum up, at least one embodiment of the present disclosure provides a path selection method, where the path selection information includes a multi-hop IAB base station identifier and an identifier of the next-hop IAB base station of the current IAB base station, or only includes the downlink of the current IAB base station. A representation of a one-hop IAB base station. In at least one embodiment of the present disclosure, a sequence notification scheme is introduced, and each IAB base station can delete the identification of its next-hop IAB base station in the path selection information after learning the identifier of its own next-hop IAB base station; At least one embodiment can quickly and efficiently complete path selection, while also simplifying information processing for each IAB base station.

如图8所示，本发明实施例还提供一种路径选择装置，应用于第一IAB基站，第一IAB基站为所选路径中任意一个IAB基站，包括：As shown in FIG. 8 , an embodiment of the present invention further provides a path selection device, which is applied to a first IAB base station, where the first IAB base station is any IAB base station in the selected path, including:

接收模块81，用于接收路径选择信息，所述路径选择信息包括下述至少一项：The receiving module 81 is configured to receive path selection information, where the path selection information includes at least one of the following:

所选路径的路径标识；The path ID of the selected path;

或者，or,

此外，根据本公开的至少一个实施例，所述接收模块包括：Furthermore, according to at least one embodiment of the present disclosure, the receiving module includes:

第一接收子模块，用于接收第一回程适配协议BAP包，所述第一BAP包包括N个比特组，一个比特组用于指示一跳目标IAB基站的信息；每个比特组包括至少一个比特；The first receiving sub-module is configured to receive the first backhaul adaptation protocol BAP packet, the first BAP packet includes N bit groups, and one bit group is used to indicate the information of the one-hop target IAB base station; each bit group includes at least a bit;

第二接收子模块，用于接收第二BAP包，所述第二BAP包包括第一数据区和第二数据区；其中，所述第一数据区的N个比特组分别用于指示对应的IAB基站的标识，所述第二数据区的N个比特组分别用于指示IAB基站的下一跳IAB基站的标识；每个比特组包括至少一个比特。The second receiving sub-module is configured to receive a second BAP packet, where the second BAP packet includes a first data area and a second data area; wherein the N bit groups of the first data area are respectively used to indicate the corresponding The identifier of the IAB base station, the N bit groups in the second data area are respectively used to indicate the identifier of the next-hop IAB base station of the IAB base station; each bit group includes at least one bit.

第三接收子模块，用于接收第三BAP包，所述第三BAP包至少包括N个比特组，一个比特组用于指示一跳IAB基站的下一跳IAB基站的标识，其中，N个IAB基站中每个IAB基站的下一跳IAB基站的标识按照路径选择顺序占用第三BAP包的N个比特组；每个比特组包括至少一个比特。The third receiving submodule is configured to receive a third BAP packet, where the third BAP packet includes at least N bit groups, and one bit group is used to indicate the identifier of the next-hop IAB base station of the one-hop IAB base station, wherein N The identifier of the next-hop IAB base station of each IAB base station in the IAB base station occupies N bit groups of the third BAP packet according to the path selection sequence; each bit group includes at least one bit.

第四接收子模块，用于接收携带所述路径选择信息的第四BAP包；a fourth receiving submodule, configured to receive the fourth BAP packet carrying the path selection information;

所述装置还包括以下至少之一：The device also includes at least one of the following:

删除模块，用于将所述第四BAP包中所述第一IAB基站的信息删除；a deletion module, configured to delete the information of the first IAB base station in the fourth BAP packet;

处理模块，用于将删除后的第四BAP包发送给所述第一IAB基站的下一跳IAB基站。The processing module is configured to send the deleted fourth BAP packet to the next-hop IAB base station of the first IAB base station.

综上，本公开的至少一个实施例提供一种路径选择方法，在路径选择信息中包括多跳IAB基站标识和当前IAB基站的下一跳IAB基站的标识，或者，仅包括当前IAB基站的下一跳IAB基站的表述。本公开的至少一个实施例引入顺序告知方案，每个IAB基站在获知自己的下一跳IAB基站的标识之后，可在路径选择信息中删除自己的下一跳IAB基站的标识；本公开的至少一个实施例可快速高效完成路径选择，同时还可以简化每个IAB基站的信息处理。To sum up, at least one embodiment of the present disclosure provides a path selection method, where the path selection information includes a multi-hop IAB base station identifier and an identifier of the next-hop IAB base station of the current IAB base station, or only includes the downlink of the current IAB base station. A representation of a one-hop IAB base station. At least one embodiment of the present disclosure introduces a sequence notification scheme, each IAB base station can delete the identification of its own next-hop IAB base station in the path selection information after learning the identifier of its own next-hop IAB base station; An embodiment can quickly and efficiently complete the path selection, and can also simplify the information processing of each IAB base station.

需要说明的是，本公开的至少一个实施例提供的路径选择装置是能够执行上述路径选择方法的装置，则上述路径选择方法的所有实施例均适用于该装置，且均能达到相同或相似的有益效果。It should be noted that the path selection device provided by at least one embodiment of the present disclosure is a device capable of executing the above-mentioned path selection method, and all embodiments of the above-mentioned path selection method are applicable to the device, and can achieve the same or similar beneficial effect.

如图9所示，本公开的至少一个实施例还提供一种接入和回传一体化IAB基站，所述IAB基站为第一IAB基站，包括处理器900和收发器910，所述收发器910在处理器900的控制下接收和发送数据，所述处理器900用于执行以下操作：As shown in FIG. 9 , at least one embodiment of the present disclosure further provides an integrated access and backhaul IAB base station, where the IAB base station is a first IAB base station, and includes a processor 900 and a transceiver 910 , the transceiver 910 receives and transmits data under the control of a processor 900 for performing the following operations:

所选路径的路径标识；The path ID of the selected path;

或者，or,

此外，根据本公开的至少一个实施例，所述处理器还用于：Furthermore, according to at least one embodiment of the present disclosure, the processor is further configured to:

需要说明的是，本公开的至少一个实施例提供的IAB基站是能够执行上述路径选择方法的IAB基站，则上述路径选择方法的所有实施例均适用于该IAB基站，且均能达到相同或相似的有益效果。It should be noted that the IAB base station provided by at least one embodiment of the present disclosure is an IAB base station capable of executing the above path selection method, then all the embodiments of the above path selection method are applicable to the IAB base station, and can achieve the same or similar beneficial effect.

如图10所示，本公开的至少一个实施例还提供一种路径选择装置，应用于第二IAB基站，第二IAB基站为第一IAB基站的上一跳IAB基站，所述第一IAB基站和所述第二IAB基站为所选路径中的IAB基站，包括：As shown in FIG. 10 , at least one embodiment of the present disclosure further provides a path selection apparatus, which is applied to a second IAB base station, where the second IAB base station is a previous hop IAB base station of the first IAB base station, and the first IAB base station and the second IAB base station is the IAB base station in the selected path, including:

发送模块100，用于向第一IAB基站发送路径选择信息，所述路径选择信息包括下述至少一项：The sending module 100 is configured to send path selection information to the first IAB base station, where the path selection information includes at least one of the following:

所选路径的路径标识；The path ID of the selected path;

或者，or,

此外，根据本公开的至少一个实施例，所述装置还包括：Furthermore, according to at least one embodiment of the present disclosure, the apparatus further includes:

反馈模块，用于在所述路径选择信息由所述第二IAB基站封装、且第二IAB基站对所述路径选择信息进行了修改操作的情况下，向归属IAB基站发送反馈信息；所述反馈信息包含下述至少一项：a feedback module, configured to send feedback information to the home IAB base station when the path selection information is encapsulated by the second IAB base station and the second IAB base station modifies the path selection information; the feedback The information contains at least one of the following:

修改原因。Modify reason.

此外，根据本公开的至少一个实施例，所述发送模块包括：Furthermore, according to at least one embodiment of the present disclosure, the sending module includes:

第一发送子模块，用于向第一IAB基站发送第一回程适配协议BAP包，所述第一BAP包包括N个比特组，一个比特组用于指示一跳目标IAB基站的信息；每个比特组包括至少一个比特；The first sending submodule is configured to send the first backhaul adaptation protocol BAP packet to the first IAB base station, where the first BAP packet includes N bit groups, and one bit group is used to indicate the information of the one-hop target IAB base station; the bit groups include at least one bit;

第二发送子模块，用于向第一IAB基站发送第二BAP包，所述第二BAP包包括第一数据区和第二数据区；其中，所述第一数据区的N个比特组分别用于指示对应的IAB基站的标识，所述第二数据区的N个比特组分别用于指示IAB基站的下一跳IAB基站的标识；每个比特组包括至少一个比特。The second sending submodule is configured to send a second BAP packet to the first IAB base station, where the second BAP packet includes a first data area and a second data area; wherein the N bit groups of the first data area are respectively It is used to indicate the identity of the corresponding IAB base station, and the N bit groups in the second data area are respectively used to indicate the identity of the next-hop IAB base station of the IAB base station; each bit group includes at least one bit.

第三发送子模块，用于向第一IAB基站发送第三BAP包，所述第三BAP包至少包括N个比特组，一个比特组用于指示一跳IAB基站的下一跳IAB基站的标识，其中，N个IAB基站中每个IAB基站的下一跳IAB基站的标识按照路径选择顺序占用第三BAP包的N个比特组；每个比特组包括至少一个比特。The third sending submodule is configured to send a third BAP packet to the first IAB base station, where the third BAP packet includes at least N bit groups, and one bit group is used to indicate the identifier of the next-hop IAB base station of the one-hop IAB base station , wherein the identifier of the next-hop IAB base station of each IAB base station in the N IAB base stations occupies N bit groups of the third BAP packet according to the path selection sequence; each bit group includes at least one bit.

如图9所示，本公开的至少一个实施例提供一种接入和回传一体化IAB基站，所述IAB基站为第二IAB基站，包括处理器900和收发器910，所述收发器910在处理器900的控制下接收和发送数据，所述处理器900用于执行以下操作：As shown in FIG. 9 , at least one embodiment of the present disclosure provides an integrated access and backhaul IAB base station, where the IAB base station is a second IAB base station, including a processor 900 and a transceiver 910 , the transceiver 910 Data is received and transmitted under the control of a processor 900, which is configured to perform the following operations:

所选路径的路径标识；The path ID of the selected path;

或者，or,

修改原因。Modify reason.

综上，本公开的至少一个实施例提供一种路径选择方法，在路径选择信息中包括多跳IAB基站标识和当前IAB基站的下一跳IAB基站的标识，或者，仅包括当前IAB基站的下一跳IAB基站的表述。本公开的至少一个实施例引入顺序告知方案，每个IAB基站在获知自己的下一跳IAB基站的标识之后，可在路径选择信息中删除自己的下一跳IAB基站的标识；本公开的至少一个实施例可快速高效完成路径选择，同时还可以简化每个IAB基站的信息处理。To sum up, at least one embodiment of the present disclosure provides a path selection method, where the path selection information includes a multi-hop IAB base station identifier and an identifier of the next-hop IAB base station of the current IAB base station, or only includes the downlink of the current IAB base station. A representation of a one-hop IAB base station. At least one embodiment of the present disclosure introduces a sequence notification scheme, each IAB base station can delete the identification of its own next-hop IAB base station in the path selection information after learning the identifier of its own next-hop IAB base station; An embodiment can quickly and efficiently complete the path selection, while also simplifying the information processing of each IAB base station.

本公开的至少一个实施例还提供一种IAB基站，包括存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序，所述处理器执行所述程序时实现如上所述的路径选择方法实施例中的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。At least one embodiment of the present disclosure also provides an IAB base station, including a memory, a processor, and a computer program stored on the memory and executable on the processor, and the processor implements the above when executing the program Each process in the embodiment of the path selection method can achieve the same technical effect. To avoid repetition, details are not repeated here.

本公开的至少一个实施例还提供一种计算机可读存储介质，其上存储有计算机程序，该程序被处理器执行时实现如上所述的路径选择方法实施例中的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。其中，所述的计算机可读存储介质，如只读存储器(Read-Only Memory，简称ROM)、随机存取存储器(Random Access Memory，简称RAM)、磁碟或者光盘等。At least one embodiment of the present disclosure also provides a computer-readable storage medium on which a computer program is stored, and when the program is executed by a processor, implements each process in the above-mentioned embodiment of the path selection method, and can achieve the same In order to avoid repetition, the technical effect will not be repeated here. The computer-readable storage medium is, for example, a read-only memory (Read-Only Memory, ROM for short), a random access memory (Random Access Memory, RAM for short), a magnetic disk, or an optical disk.

本领域内的技术人员应明白，本申请的实施例可提供为方法、系统或计算机程序产品。因此，本申请可采用完全硬件实施例、完全软件实施例或结合软件和硬件方面的实施例的形式。而且，本申请可采用在一个或多个其中包含有计算机可用程序代码的计算机可读存储介质(包括但不限于磁盘存储器和光学存储器等)上实施的计算机程序产品的形式。As will be appreciated by one skilled in the art, the embodiments of the present application may be provided as a method, a system or a computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-readable storage media having computer-usable program code embodied therein, including but not limited to disk storage, optical storage, and the like.

本申请是参照根据本申请实施例的方法、设备(系统)和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其它可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其它可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或一个方框或多个方框中指定的功能的装置。The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the present application. It will be understood that each flow and/or block in the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to the processor of a general purpose computer, special purpose computer, embedded processor or other programmable data processing device to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing device produce Means for implementing the functions specified in a flow or flow and/or a block or blocks of the flowchart.

这些计算机程序指令也可存储在能引导计算机或其它可编程数据处理设备以特定方式工作的计算机可读存储介质中，使得存储在该计算机可读存储介质中的指令产生包括指令装置的纸制品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。These computer program instructions may also be stored in a computer-readable storage medium capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce a paper product comprising the instruction means, The instruction means implements the functions specified in the flow or flows of the flowcharts and/or the block or blocks of the block diagrams.

这些计算机程序指令也可装载到计算机或其它可编程数据处理设备上，使得计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他科编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。These computer program instructions can also be loaded onto a computer or other programmable data processing device, causing the computer or other programmable device to perform a series of operational steps to produce a computer-implemented process, thereby causing the instructions to be executed on the computer or other programmable data processing device Steps are provided for implementing the functions specified in a flow or flows of the flowcharts and/or a block or blocks of the block diagrams.

以上所述是本公开的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本公开所述原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本公开的保护范围。The above are the preferred embodiments of the present disclosure. It should be pointed out that for those skilled in the art, without departing from the principles of the present disclosure, several improvements and modifications can be made. These improvements and modifications It should also be regarded as the protection scope of the present disclosure.

Claims

1. A path selection method is applied to a first access and backhaul integrated IAB base station, and is characterized by comprising the following steps:

receiving path selection information, the path selection information including at least one of:

a path identification of the selected path;

the identifier of the last hop IAB base station of the selected path;

and information of N-hop IAB base stations in the selected path, wherein the N-hop IAB base stations at least comprise the first IAB base station, and N is an integer greater than 0.

2. The method of claim 1, wherein the information of the N-hop IAB base stations in the selected path comprises:

the identifier of the N-hop IAB base station in the selected path and the identifier of the next-hop IAB base station of each IAB base station in the N-hop IAB base station;

or,

and the identifier of the next hop IAB base station of each IAB base station in the N hop IAB base stations.

3. The method of claim 1, wherein the path selection information is encapsulated by a home IAB base station, or wherein the path selection information is encapsulated by any one of M-hop IAB base stations of the first IAB base station; m is an integer greater than 0.

4. The method of claim 1, wherein receiving path selection information comprises:

receiving a first Backhaul Adaptation Protocol (BAP) packet, wherein the first BAP packet comprises N bit groups, and one bit group is used for indicating information of a one-hop target inter access node (IAB) base station; each bit group comprises at least one bit;

wherein a bit group comprises a first type of bit and a second type of bit; the first type bit is used for indicating the identification of the target IAB base station, and the second type bit is used for indicating the identification of the next hop IAB base station of the target IAB base station.

5. The method of claim 1, wherein receiving path selection information comprises:

receiving a second BAP packet, wherein the second BAP packet comprises a first data area and a second data area; the N bit groups of the first data area are respectively used for indicating the identifier of the corresponding IAB base station, and the N bit groups of the second data area are respectively used for indicating the identifier of the next-hop IAB base station of the IAB base station; each bit group includes at least one bit.

6. The method of claim 1, wherein receiving path selection information comprises:

receiving a third BAP packet, wherein the third BAP packet at least comprises N bit groups, and one bit group is used for indicating an identifier of a next hop IAB base station of one hop IAB base station, and the identifier of the next hop IAB base station of each IAB base station in the N IAB base stations occupies the N bit groups of the third BAP packet according to a path selection sequence; each bit group includes at least one bit.

7. The method of claim 1, wherein receiving path selection information comprises:

receiving a fourth BAP packet carrying the path selection information;

the method further comprises at least one of:

deleting the information of the first IAB base station in the fourth BAP packet;

and sending the fourth BAP packet after deletion to a next hop IAB base station of the first IAB base station.

8. A path selection method is applied to a second access and backhaul integrated IAB base station, and is characterized by comprising the following steps:

sending path selection information to a first IAB base station, wherein the path selection information comprises at least one of the following items:

a path identification of the selected path;

the identifier of the last hop IAB base station of the selected path;

and information of N-hop IAB base stations in the selected path, wherein the N-hop IAB base stations at least comprise the next-hop IAB base station of the first IAB base station, and N is an integer greater than 0.

9. The method of claim 8, wherein the information of the N-hop IAB base stations in the selected path comprises:

or,

10. The method of claim 8, wherein the path selection information is encapsulated by a home IAB base station, or wherein the path selection information is encapsulated by the second IAB base station or any of a second IAB base station's up-P-hop IAB base stations; p is an integer greater than 0.

11. The method of claim 10, further comprising:

sending feedback information to the home IAB base station under the condition that the path selection information is encapsulated by the second IAB base station and the second IAB base station modifies the path selection information; the feedback information comprises at least one of:

the modified identifier of the N-hop IAB base station of the selected path;

the reason is modified.

12. The method of claim 8, wherein sending path selection information to the first IAB base station comprises:

sending a first Backhaul Adaptation Protocol (BAP) packet to a first inter-access node (IAB) base station, wherein the first BAP packet comprises N bit groups, and one bit group is used for indicating information of a one-hop target IAB base station; each bit group comprises at least one bit;

13. The method of claim 8, wherein sending path selection information to the first IAB base station comprises:

sending a second BAP packet to the first IAB base station, wherein the second BAP packet comprises a first data area and a second data area; the N bit groups of the first data area are respectively used for indicating the identifier of the corresponding IAB base station, and the N bit groups of the second data area are respectively used for indicating the identifier of the next-hop IAB base station of the IAB base station; each bit group includes at least one bit.

14. The method of claim 8, wherein sending path selection information to the first IAB base station comprises:

sending a third BAP packet to the first IAB base station, wherein the third BAP packet at least comprises N bit groups, one bit group is used for indicating the identifier of a next hop IAB base station of one hop IAB base station, and the identifier of the next hop IAB base station of each IAB base station in the N IAB base stations occupies the N bit groups of the third BAP packet according to a path selection sequence; each bit group includes at least one bit.

15. A path selection apparatus applied to a first IAB base station, comprising:

a receiving module, configured to receive path selection information, where the path selection information includes at least one of:

a path identification of the selected path;

the identifier of the last hop IAB base station of the selected path;

16. An access and backhaul integrated IAB base station, the IAB base station being a first IAB base station and comprising a processor and a transceiver, the transceiver receiving and transmitting data under the control of the processor, wherein the processor is configured to:

a path identification of the selected path;

the identifier of the last hop IAB base station of the selected path;

17. A path selection apparatus applied to a second IAB base station, comprising:

a sending module, configured to send path selection information to a first IAB base station, where the path selection information includes at least one of the following:

a path identification of the selected path;

the identifier of the last hop IAB base station of the selected path;

18. An access and backhaul integrated IAB base station, the IAB base station being a second IAB base station and comprising a processor and a transceiver, the transceiver receiving and transmitting data under the control of the processor, wherein the processor is configured to:

a path identification of the selected path;

the identifier of the last hop IAB base station of the selected path;

19. An IAB base station comprising a memory, a processor, and a program stored on the memory and executable on the processor; wherein the processor, when executing the program, implements a path selection method as claimed in any one of claims 1 to 7; alternatively, the processor implements the path selection method according to any one of claims 8 to 14 when executing the program.

20. A computer-readable storage medium, on which a computer program is stored, which program, when being executed by a processor, carries out the steps of the path selection method according to any one of claims 1 to 7; alternatively, the program when executed by a processor implements the steps in the path selection method according to any of claims 8-14.