Method and system for transmitting integrated access and backhaul information - Patents.com

Abstract

A method, apparatus, and system for reducing signaling in a wireless system, where one or more user equipment or mobile terminals are connected to an integrated access and backhaul node. The present disclosure relates to providing integrated access and backhaul indication information, including at least mobile integrated access and backhaul node indication information or group mobility indication. The integrated access and backhaul indication information can be used to reduce signaling overhead and ensure service continuity.

Description

[Technical Field]

[0001] (Technical field) TECHNICAL FIELD This disclosure is generally directed to wireless communications. [Background technology]

[0002] (background) Mobile communication technologies are moving the world toward an increasingly connected and networked society. The rapid growth of mobile communications and technological advances have led to further demands for capacity and connectivity. Other aspects, such as energy consumption, device cost, spectral efficiency, and latency, are also important to meet the needs of various communication scenarios. Various techniques are being discussed, including new methods for providing higher quality of service, longer battery life, and improved performance. Summary of the Invention [Problem to be solved by the invention]

[0003] (summary) This patent document describes, among other things, techniques for communicating in an Integrated Access and Backhaul (IAB) deployment for New Radio (NR). IAB indication information that can be used for IAB deployment. [Means for solving the problem]

[0004] The following aspects may be preferably implemented in various embodiments: In one aspect, the IAB indication information includes mobile IAB information that is usable in an IAB deployment, and in one aspect, has one or more MTs or UEs connected thereto.

[0005] In another aspect, the IAB indication information is transmitted to a base station, and the mobile IAB node information indicates that the IAB node is a mobile IAB node. In another aspect, the mobile IAB node information is usable to select a network element that supports mobile IAB to serve the MT or UE after the mobile IAB indication is received.

[0006] In another aspect, the IAB indication information is transmitted by the IAB node or by the MT or UE via a radio resource control (RRC) message. In another aspect, the IAB indication information is transmitted via an RRC configuration complete message, a measurement report message, or a UE assistance information message.

[0007] In another aspect, the IAB indication information is transmitted by the IAB node in system information, and the IAB node information indicates that the IAB node is a mobile IAB node or that the IAB node supports mobile integrated access and backhaul.

[0008] In another aspect, the IAB indication information is transmitted from one base station to another base station via an Xn Application Protocol (XnAP) message, and the mobile IAB node information indicates that the base station supports a mobile IAB node.

[0009] In yet another aspect, the base station is an IAB donor central unit (CU) or an integrated access and backhaul donor gNB. In yet another aspect, the IAB indication information is sent via an XN SETUP REQUEST, or an XN SETUP RESPONSE, or an NG-RAN NODE CONFIGURATION UPDATE, or an NG-RAN NODE CONFIGURATION UPDATE ACKNOWLEDGE message.

[0010] In another aspect, the IAB indication information is transmitted from the base station to an Access Mobility Management Function (AMF) or from the AMF to the base station via an NG Application Protocol (NGAP) message, and the mobile IAB node information indicates that the base station or the AMF supports mobile IAB.

[0011] In yet another aspect, the base station is an IAB donor central unit (CU) or an integrated access and backhaul donor gNB. In yet another aspect, the IAB indication information is conveyed via an NG SETUP REQUEST, or an NG SETUP RESPONSE, or a RAN CONFIGURATION UPDATE, or a RAN CONFIGURATION UPDATE ACKNOWLEDGE, or an AMF CONFIGURATION UPDATE, or an AMF CONFIGURATION UPDATE ACKNOWLEDGE.

[0012] In another aspect, the IAB indication information comprises group mobility information, the IAB indication information usable by an IAB node having one or more MTs or UEs connected thereto. In another aspect, the IAB indication information is transmitted from the IAB node or from the MT or UE via a radio resource control (RRC) message, the group mobility indication indicating that the MT or UE supports or intends to implement group mobility, the group mobility indication usable by a base station to initiate handover of devices connected to the IAB node.

[0013] In yet another aspect, the IAB information is conveyed via an RRC Configuration Complete message, a Measurement Report message, or a UE Assistance Information message.

[0014] In another aspect, the IAB indication information is transmitted by the IAB node in system information, and the group mobility indication indicates that the IAB node supports group mobility.

[0015] In another aspect, the IAB indication information is transmitted from one base station to another base station via an Xn Application Protocol (XnAP) message, and the group mobility indication indicates that the base station supports group mobility.

[0016] In another aspect, the base station is an IAB donor central unit (CU) or an IAB donor gNB. In yet another aspect, the IAB indication information is sent via an XN SETUP REQUEST, or an XN SETUP RESPONSE, or an NG-RAN NODE CONFIGURATION UPDATE, or an NG-RAN NODE CONFIGURATION UPDATE ACKNOWLEDGE message. In another aspect, the IAB indication information is transmitted from the base station to an Access Mobility Management Function (AMF) or from the AMF to the base station via an NG Application Protocol (NGAP) message, and the group mobility indication indicates that the base station or the AMF supports group mobility.

[0017] In yet another aspect, the base station is an IAB donor central unit (CU) or an integrated access and backhaul donor gNB. In yet another aspect, the IAB indication information is sent via an NG SETUP REQUEST, or an NG SETUP RESPONSE, or a RAN CONFIGURATION UPDATE, or a RAN CONFIGURATION UPDATE ACKNOWLEDGE, or an AMF CONFIGURATION UPDATE, or an AMF CONFIGURATION UPDATE ACKNOWLEDGE.

[0018] In aspects of the present disclosure, message transmission and reception is performed by various devices, including MTs, UEs, IAB nodes, and IAB donors.

[0019] These and other aspects are described in this disclosure. The present specification also provides, for example, the following items: (Item 1) 1. A method for transmitting information, comprising: 1. A method of transmitting information, comprising transmitting integrated access and backhaul indication information, the integrated access and backhaul indication information comprising mobile integrated access and backhaul node information, the integrated access and backhaul indication information being available when the mobile integrated access and backhaul node has one or more user equipments (UEs) connected thereto. (Item 2) the integrated access and backhaul indication information is transmitted to a base station; Item 10. The information transmission method of item 1, wherein the mobile integrated access and backhaul node information indicates that the integrated access and backhaul node is a mobile integrated access and backhaul node. (Item 3) Item 3. The information transmission method of item 2, wherein the integrated access and backhaul indication information is transmitted by the integrated access and backhaul node or by the UE via a radio resource control (RRC) message. (Item 4) Item 3. The information transmission method according to item 3, wherein the integrated access and backhaul information is transmitted via an RRC configuration complete message, a measurement report message, or a UE assistance information message. (Item 5) the integrated access and backhaul indication information is transmitted by the integrated access and backhaul node in system information; Item 10. The information transmission method of item 1, wherein the mobile integrated access and backhaul node information indicates that the integrated access and backhaul node is a mobile integrated access and backhaul node or that the integrated access and backhaul node supports mobile integrated access and backhaul. (Item 6) the integrated access and backhaul indication information is transmitted from one base station to another base station via an Xn Application Protocol (XnAP) message; Item 1. The information transmission method of item 1, wherein the mobile integrated access and backhaul node information indicates that the base station supports the mobile integrated access and backhaul node. (Item 7) Item 7. The information transmission method of item 6, wherein the base station is an integrated access and backhaul donner central unit (CU) or an integrated access and backhaul donner gNB. (Item 8) 7. The information transmission method of item 6, wherein the integrated access and backhaul indication information is transmitted via an XN SETUP REQUEST, or an XN SETUP RESPONSE, or an NG-RAN NODE CONFIGURATION UPDATE, or an NG-RAN NODE CONFIGURATION UPDATE ACKNOWLEDGE message. (Item 9) The integrated access and backhaul indication information is transmitted from a base station to an Access Mobility Management Function (AMF) or from the AMF to the base station via an NG Application Protocol (NGAP) message; Item 1, wherein the mobile integrated access and backhaul node information indicates that the base station or AMF supports mobile integrated access and backhaul. (Item 10) Item 10. The information transmission method of item 9, wherein the base station is an integrated access and backhaul donner central unit (CU) or an integrated access and backhaul donner gNB. (Item 11) 10. The information transmission method of item 9, wherein the integrated access and backhaul indication information is transmitted via an NG SETUP REQUEST, or an NG SETUP RESPONSE, or a RAN CONFIGURATION UPDATE, or a RAN CONFIGURATION UPDATE ACKNOWLEDGE, or an AMF CONFIGURATION UPDATE, or an AMF CONFIGURATION UPDATE ACKNOWLEDGE. (Item 12) 1. A method for transmitting information, comprising: transmitting integrated access and backhaul indication information, the integrated access and backhaul indication information comprising a group mobility indication; The integrated access and backhaul indication information is available when a mobile integrated access and backhaul node has one or more user equipments (UEs) connected thereto. (Item 13) the integrated access and backhaul indication information is transmitted from the integrated access and backhaul node or from the UE via a radio resource control (RRC) message; Item 13. The information transmission method of item 12, wherein the group mobility indication indicates that the UE supports or intends to implement group mobility, or indicates that the IAB node supports or intends to implement group mobility. (Item 14) Item 14. The information transmission method according to item 13, wherein the integrated access and backhaul information is transmitted via an RRC configuration complete message, a measurement report message, or a UE assistance information message. (Item 15) the integrated access and backhaul indication information is transmitted by the integrated access and backhaul node in system information; Item 13. The information transmission method of item 12, wherein the group mobility indication indicates that the integrated access and backhaul node supports group mobility. (Item 16) the integrated access and backhaul indication information is transmitted from one base station to another base station via an Xn Application Protocol (XnAP) message; Item 13. The information transmission method according to item 12, wherein the group mobility indication indicates that the base station supports group mobility. (Item 17) Item 17. The information transmission method of item 16, wherein the base station is an integrated access and backhaul donner central unit (CU) or an integrated access and backhaul donner gNB. (Item 18) Item 17. The information transmission method of item 16, wherein the integrated access and backhaul indication information is transmitted via an XN SETUP REQUEST, or an XN SETUP RESPONSE, or an NG-RAN NODE CONFIGURATION UPDATE, or an NG-RAN NODE CONFIGURATION UPDATE ACKNOWLEDGE message. (Item 19) The integrated access and backhaul indication information is transmitted from a base station to an Access Mobility Management Function (AMF) or from the AMF to the base station via an NG Application Protocol (NGAP) message; Item 13. The information transmission method of item 12, wherein the group mobility indication indicates that the base station or AMF supports group mobility. (Item 20) 20. The information transmission method of item 19, wherein the base station is an integrated access and backhaul donner central unit (CU) or an integrated access and backhaul donner gNB. (Item 21) Item 21. The information transmission method of item 20, wherein the integrated access and backhaul indication information is sent via an NG SETUP REQUEST, or an NG SETUP RESPONSE, or a RAN CONFIGURATION UPDATE, or a RAN CONFIGURATION UPDATE ACKNOWLEDGE, or an AMF CONFIGURATION UPDATE, or an AMF CONFIGURATION UPDATE ACKNOWLEDGE. (Item 22) Item 3. The information transmission method of item 2, wherein the base station is an integrated access and backhaul donner central unit (CU) or an integrated access and backhaul donner gNB. (Item 23) 23. A wireless communication device comprising: a processor configured to implement the method described in any one or more of items 1-22. (Item 24) 23. A computer program product comprising a computer-readable medium having code stored thereon, the code, when executed, causing a processor to implement the method described in any one or more of items 1-22. [Brief explanation of the drawings]

[0020] [Figure 1] FIG. 1 illustrates an embodiment of an IAB deployment in a moving vehicle.

[0021] [Figure 2] FIG. 2 illustrates an embodiment of an IAB topology.

[0022] [Figure 3]FIG. 3 illustrates an embodiment of IAB indication information transmitted in an RRC message.

[0023] [Figure 4] FIG. 4 illustrates an embodiment of IAB indication information in system information.

[0024] [Figure 5] FIG. 5 illustrates an IAB donor transmitting IAB indication information to another IAB donor via an XnAP message.

[0025] [Figure 6] FIG. 6 illustrates IAB indication information being transmitted via an NGAP message.

[0026] [Figure 7] FIG. 7 is a flowchart illustrating an MT transmitting IAB indication information via an RRC message.

[0027] [Figure 8] FIG. 8 is a flowchart illustrating an IAB node transmitting IAB indication information via an RRC message.

[0028] [Figure 9] FIG. 9 is a flowchart illustrating an IAB donor transmitting IAB indication information via an XnAP message.

[0029] [Figure 10] FIG. 10 is a flowchart illustrating an IAB donor transmitting IAB indication information via an NGAP message.

[0030] [Figure 11] FIG. 11 is a flowchart illustrating an AM transmitting IAB indication information via an NGAP message.

[0031] [Figure 12] FIG. 12 illustrates an example of a wireless communication system in which techniques according to one or more embodiments of the present technology may be applied.

[0032] [Figure 13] FIG. 13 is a block diagram representation of a portion of a wireless station in accordance with one or more embodiments of the present technology. DETAILED DESCRIPTION OF THE INVENTION

[0033] (Detailed explanation) The present disclosure relates to wireless systems, and more particularly to the transmission, reception, and identification of information that a network may use. As an example, the identification information may be used in handover, in selecting a network element, or in identifying a device that supports mobile IAB.

[0034] For example, integrated access and backhaul (IAB) systems support wireless backhauling by deploying new radio (NR) cells to reduce the need for wireline transport infrastructure.

[0035] The terminating node of the NR backhaul network on the network side is generally referred to as an IAB donor and represents a gNB, which is a logical node with additional functionality to support IAB. An IAB node supports gNB distributed unit (gNB-DU) functionality, which enables NR access to user equipment (UE) and next-hop IAB nodes. An IAB node also supports functionality related to IAB-MT, which enables connection to another IAB node or IAB donor's gNB-DU.

[0036] In one example, as shown in FIG. 1 , a moving vehicle, such as a high-speed train 101, has several passengers with one or more mobile terminals (MTs) or user equipment (UE) 103-106. The UEs 103-106 are wirelessly connected to an IAB node 102, which in turn is connected to a donor or parent IAB node 107 or 108. As the high-speed train moves, handovers between parent IAB nodes occur. The UEs 103-106 access the network through the IAB node 102, and the IAB node 102 accesses the network through the parent IAB node. It should be understood that the use of UE and MT herein is not mutually exclusive, and it should be assumed that either term can refer to either an MT or a UE. It should also be understood that a parent IAB node is to be encompassed by the term "base station."

[0037] The relative positions between the UEs 103-106 and the IAB node 102 will likely change little as the train 101 progresses across it. However, the relative positions between the IAB node 102 and each IAB donor will likely change frequently as the train 101 progresses.

[0038] As a result, the present disclosure provides systems and methods for reducing signaling. In one embodiment, handover of an IAB node 102 can be performed as opposed to handover for a single UE 103-106. This reduces signaling overhead and improves service continuity.

[0039] Figure 2 illustrates an IAB topology. Parent nodes 201 and 202 have IAB-DU functionality, and they provide NR access to IAB node 203. IAB node 203 functions as both an IAB MT and an IAB DU. IAB node 203 can connect to parent nodes 201 and 202 as an IAB MT and provide access to child nodes 204-206 as an IAB DU. Child nodes 204-206 have IAB MT functionality. As can be appreciated, any node in the topology can function as a donor or a termination, as long as it is designed with the functionality.

[0040] In one embodiment, one or more UEs 303-306 are connected to an IAB node 302 that transmits IAB indication information 308 to an IAB donor central unit (CU) 307 via a radio resource control (RRC) message. In another embodiment, a UE 303 transmits IAB indication information 308 to an IAB donor CU 307 via an RRC message.

[0041] The IAB indication information may include at least mobile IAB node indication information and / or group mobility indication. In an embodiment, the IAB indication information includes mobile IAB node indication information, where the mobile IAB node indication information indicates that the IAB node 302 is a mobile IAB node. The network may then know that the IAB node 302 is in a scenario similar to that depicted in FIG. 1, and in an embodiment, a group handover may be performed accordingly.

[0042] In another embodiment, the IAB indication information includes a group mobility indication. The group mobility indication indicates that the UE 303-306 supports group mobility or that the UE intends to implement group mobility. In an embodiment, the IAB donor CU 307 initiates a group mobility procedure in a handover scenario after receiving the group mobility indication.

[0043] In an embodiment, the IAB indication information sent via an RRC message may be sent via an RRC configuration complete message or a measurement report message, or a UE assistance information message.

[0044] 4, an IAB node includes IAB indication information 402 in its system information 401. The IAB indication information 402 includes at least one of a mobile IAB node indication indicating that the IAB node is a mobile IAB node (or that the IAB node supports a mobile IAB node) or a group mobility indication, which indicates that the IAB node supports group mobility.

[0045] In yet another embodiment, the Xn Application Protocol (XnAP) is used to transmit IAB indication information. As shown in Figure 5, a series of UEs 503-506 are connected to an IAB node 502. The IAB node 502 is connected to one or more IAB donors 507 / 508, and one IAB donor 507 transmits an XnAP message 509 containing IAB indication information to another IAB donor 508.

[0046] The IAB indication information includes at least one of a mobile IAB node indication or a group mobility indication. The mobile IAB node indication indicates that the IAB donor supports a mobile IAB node. The group mobility indication indicates that the IAB donor supports group mobility.

[0047] While FIG. 5 depicts IAB donor 507 and IAB donor 508 connected to IAB node 502, it should be understood that any number of IAB donors (or no IAB donors) may be connected to the IAB node once IAB indication information is transmitted in XnAP message 509.

[0048] In one embodiment, the IAB donor is an IAB donor CU or an IAB donor gNB. In another embodiment, the IAB indication information may be sent via an XN SETUP REQUEST, XN SETUP RESPONSE, NG-RAN NODE CONFIGURATION UPDATE, or NG-RAN NODE CONFIGURATION UPDATE ACKNOWLEDGE message.

[0049] 6, an IAB donor 601 transmits IAB indication information in an NG Application Protocol (NGAP) message 603 to an Access and Mobility Management Function (AMF) 602, which can be located on any device. Annotation 604 illustrates that the NGAP message 603 is transmitted from the IAB donor 601 to the AMF 602.

[0050] In another embodiment, the AMF 602 transmits the IAB indication information in the NGAP message 603 to the IAB donor 601. The annotation 605 indicates that the NGP message 603 is transmitted from the AMF 602.

[0051] The IAB indication information in the NGAP message 603 includes at least one of a mobile IAB node indication or a group mobility indication. The mobile IAB node indication information indicates that the IAB donor or AMF supports a mobile IAB node. The group mobility indication indicates that the IAB donor or AM supports group mobility.

[0052] In an embodiment, the IAB donor is an IAB donor CU and / or an IAB donor gNB. The IAB indication information can be sent via an NG SETUP REQUEST or NG SETUP RESPONSE, a RAN CONFIGURATION UPDATE, or a RAN CONFIGURATION UPDATE ACKNOWLEDGE, or an AMF CONFIGURATION UPDATE, or an AMF CONFIGURATION UPDATE ACKNOWLEDGE.

[0053] As shown in the flowchart of Figure 7, in an embodiment, the MT transmits IAB indication information via an RRC message (702). The IAB indication information includes at least one of mobile IAB node indication information or group mobility information. The IAB indication information can be sent via an RRC configuration complete message, a measurement report message, or UE assistance information. The IAB donor CU receives the RRC message (704). In an embodiment, handover is subsequently performed (706). It should be understood that the MT described may be a UE.

[0054] As shown in the flowchart of Figure 8, in one embodiment, an IAB node transmits IAB indication information via an RRC message (802). The IAB indication information includes at least one of mobile IAB node indication information or group mobility information. The IAB indication information can be sent via an RRC configuration complete message, a measurement report message, or UE assistance information. The IAB donor CU receives the RRC message (804). In one embodiment, handover is subsequently performed (806).

[0055] As shown in the flowchart of FIG. 9 , in an embodiment, an IAB donor transmits IAB indication information to another IAB donor via an XnAP message. The IAB indication information includes at least one of mobile IAB node indication information or group mobility information. The IAB donor may be an IAB donor CU or an IAB donor gNB, and the IAB indication information may be sent via an XN SETUP REQUEST, an XN SETUP RESPONSE, an NG-RAN NODE CONFIGURATION UPDATE, or an NG-RAN NODE CONFIGURATION UPDATE ACKNOWLEDGE message. The XnAP message is received at the IAB donor (904). In an embodiment, a handover is subsequently performed (906).

[0056] As shown in the flowchart of FIG. 10, in an embodiment, an IAB donor sends IAB indication information via an NGAP message (1002). The IAB indication information includes at least one of mobile IAB node indication information or group mobility information. The AMF receives the NGAP message (1004). In an embodiment, a handover is subsequently performed (1006). The IAB indication information includes at least one of mobile IAB node indication information or group mobility information. Furthermore, the IAB donor can be an IAB donor CU or an IAB donor gNB. The IAB indication information can be sent via an NG SETUP REQUEST, or an NG SETUP RESPONSE, or a RAN CONFIGURATION UPDATE, or a RAN CONFIGURATION UPDATE ACKNOWLEDGE, or an AMF CONFIGURATION UPDATE, or an AMF CONFIGURATION UPDATE ACKNOWLEDGE.

[0057] As shown in the flowchart of FIG. 11 , in an embodiment, an AMF sends IAB indication information via an NGAP message (1002). The IAB indication information includes at least one of mobile IAB node indication information or group mobility information. An IAB donor receives the NGAP message (1004). In an embodiment, a handover is subsequently performed (1006). The IAB indication information includes at least one of mobile IAB node indication information or group mobility information. Furthermore, the IAB donor can be an IAB donor CU or an IAB donor gNB. The IAB indication information can be sent via an NG SETUP REQUEST, or an NG SETUP RESPONSE, or a RAN CONFIGURATION UPDATE, or a RAN CONFIGURATION UPDATE ACKNOWLEDGE, or an AMF CONFIGURATION UPDATE, or an AMF CONFIGURATION UPDATE ACKNOWLEDGE.

[0058] 12 illustrates an example of a wireless communication system 1200 to which techniques according to one or more embodiments of the present technology may be applied. The wireless communication system 1200 may include one or more base stations (BSs) 1205a, 1205b, one or more wireless devices 1210a, 1210b, 1210c, and 1210d, and a core network 1225. The base stations 1205a, 1205b may provide wireless service to the wireless devices 1210a, 1210b, 1210c, and 1210d in one or more wireless sectors. In some implementations, the base stations 1205a, 1205b include directional antennas for producing two or more directional beams to provide wireless coverage in different sectors. With reference to FIGS. 1 and 2, it should be understood that the base stations may be a series of IAB nodes.

[0059] The core network 1225 can communicate with one or more base stations 1205a, 1205b. The core network 1225 provides connectivity with other wireless communication systems and wired communication systems. The core network may include one or more service subscription databases to store information associated with subscribed wireless devices 1210a, 1210b, 1210c, and 1210d. A first base station 1205a can provide wireless service based on a first radio access technology, while a second base station 1205b can provide wireless service based on a second radio access technology. The base stations 1205a and 1205b may be co-located or separately located within a region depending on the deployment scenario. The wireless devices 1210a, 1210b, 1210c, and 1210d can support multiple different radio access technologies. The techniques and embodiments described herein may be implemented by the base stations of the wireless devices described herein.

[0060] 13 is a block diagram representation of a portion of a wireless station in accordance with one or more embodiments of the present technology. A wireless station 1305, such as a base station or wireless device (or UE), may include processor electronics 1310, such as a microprocessor, that implements one or more of the wireless techniques presented herein. The wireless station 1305 may include transceiver electronics 1315 for transmitting and / or receiving wireless signals via one or more communication interfaces, such as an antenna 1320. The wireless station 1305 may include other communication interfaces for transmitting and receiving data. The wireless station 1305 may include one or more memories (not explicitly shown) configured to store information such as data and / or instructions. In some implementations, the processor electronics 1310 may include at least a portion of the transceiver electronics 1315. In some embodiments, at least some of the disclosed techniques, modules, or functionality are implemented using the wireless station 1305. In some embodiments, the wireless station 1305 may be configured to perform methods described herein.

[0061] It should be understood that this document discloses techniques that may be embodied in various embodiments of IAB deployment. Other disclosed embodiments, modules, and functional operations described herein can be implemented in digital electronic circuitry, or in computer software, firmware, or hardware, including the structures disclosed herein and their structural equivalents, or in one or more combinations thereof. Other disclosed embodiments can be implemented as one or more computer program products, i.e., one or more modules of computer program instructions encoded on a computer-readable medium for execution by or to control the operation of a data processing apparatus. The computer-readable medium can be a machine-readable storage device, a machine-readable storage substrate, a memory device, a composition of matter producing a machine-readable propagated signal, or one or more combinations thereof. The term "data processing apparatus" encompasses all apparatuses, devices, and machines for processing data, including, by way of example, a programmable processor, a computer, or multiple processors or computers. In addition to hardware, the apparatus can include code that creates an execution environment for the computer program, such as code constituting processor firmware, a protocol stack, a database management system, an operating system, or one or more combinations thereof. The propagated signal is an artificially generated signal, for example, a machine-generated electrical, optical, or electromagnetic signal that is generated to encode information for transmission to a suitable receiver device.

[0062] A computer program (also known as a program, software, software application, script, or code) can be written in any form of programming language, including compiled or interpreted languages, and can be deployed in any form, including as a stand-alone program or as a module, component, subroutine, or other unit suitable for use in a computing environment. A computer program does not necessarily correspond to a file in a file system. A program can be stored within a portion of a file that holds other programs or data (e.g., one or more scripts stored in a markup language document), in a single file dedicated to the program, or in multiple collaborative files (e.g., files that store one or more modules, subprograms, or portions of code). A computer program can be deployed to be executed on one computer or on multiple computers located at one site or distributed across multiple sites and interconnected by a communications network.

[0063] The processes and logic flows described herein may be implemented by one or more programmable processors running one or more computer programs to perform functions by operating on input data and generating output. The processes and logic flows may also be implemented by, and apparatus may also be implemented as, special purpose logic circuitry, such as an FPGA (field programmable gate array) or an ASIC (application-specific integrated circuit).

[0064] Processors suitable for executing computer programs include, by way of example, both general-purpose and special-purpose microprocessors, and any one or more processors of any kind of digital computer. Generally, a processor will receive instructions and data from a read-only memory or a random-access memory, or both. The essential elements of a computer are a processor for executing instructions and one or more memory devices for storing instructions and data. Generally, a computer will also include one or more mass storage devices, such as magnetic, magneto-optical, or optical disks, for storing data, or be operatively coupled to receive data from or transfer data to, or both. However, a computer does not require such devices. Computer-readable media suitable for storing computer program instructions and data include all forms of non-volatile memory, media, and memory devices, including, by way of example, semiconductor memory devices, e.g., EPROM, EEPROM, and flash memory devices, magnetic disks, e.g., internal hard disks or removable disks, magneto-optical disks, and CD-ROM and DVD-ROM disks. The processor and memory can be supplemented by, or incorporated in, special-purpose logic circuitry.

[0065] While this patent document contains many details, these should not be construed as limitations on the scope of any invention or what may be claimed, but rather as descriptions of features that may be specific to particular embodiments of a particular invention. Certain features that are described in this patent document in the context of separate embodiments can also be implemented in combination in a single embodiment. Conversely, various features that are described in the context of a single embodiment can also be implemented in multiple embodiments separately or in any suitable subcombination. Furthermore, while features may be described above as operative in a combination and even initially claimed as such, one or more features from a claimed combination can, in some cases, be deleted from the combination, and the claimed combination may be directed to subcombinations or variations of subcombinations.

[0066] Similarly, although operations are depicted in the figures in a particular order, this should not be understood as requiring such operations to be performed in the particular order shown, or in sequential order, or that all of the illustrated operations be performed, to achieve desirable results. Further, the separation of various system components in the embodiments described in this patent document should not be understood as requiring such separation in all embodiments.

[0067] Only some implementations and examples are described; other implementations, enhancements, and variations can be made based on what is described and illustrated in this patent document.

Claims

1. 1. A method for transmitting information, comprising: a first base station transmitting integrated access and backhaul indication information from an integrated access and backhaul node, the integrated access and backhaul node communicating with and movable with a plurality of mobile terminals, the integrated access and backhaul indication information including a group mobility indication indicating that the plurality of mobile terminals support group mobility, the integrated access and backhaul indication information comprising mobile integrated access and backhaul node information; transmitting the integrated access and backhaul indication information, including the group mobility indication, from the first base station to a second base station; performing a handover of the plurality of mobile terminals using the integrated access and backhaul indication information including the group mobility indication; An information transmission method comprising:

2. The information transmission method of claim 1 , wherein the mobile integrated access and backhaul node information indicates that the integrated access and backhaul node is a mobile integrated access and backhaul node.

3. 3. The information transmission method of claim 2, wherein the second base station is an integrated access and backhaul donor central unit (CU) or an integrated access and backhaul donor gNB, and the integrated access and backhaul indication information is transmitted by the integrated access and backhaul node or by the multiple mobile terminals via a radio resource control (RRC) message.

4. The information transmission method according to claim 3 , wherein the integrated access and backhaul indication information is transmitted via an RRC configuration complete message, a measurement report message, or a UE assistance information message.

5. 2. The information transmission method of claim 1, wherein the mobile integrated access and backhaul node information indicates that the integrated access and backhaul node is a mobile integrated access and backhaul node or that the integrated access and backhaul node supports mobile integrated access and backhaul.

6. The integrated access and backhaul indication information is transmitted from the first base station to the second base station via an Xn Application Protocol (XnAP) message, and each of the first base station and the second base station is an integrated access and backhaul donor central unit (CU) or an integrated access and backhaul donor gNB; 2. The information transmission method of claim 1, wherein the mobile integrated access and backhaul node information indicates that a base station supports a mobile integrated access and backhaul node, and the integrated access and backhaul indication information is sent via an XN SETUP REQUEST, an XN SETUP RESPONSE, an NG-RAN NODE CONFIGURATION UPDATE, or an NG-RAN NODE CONFIGURATION UPDATE ACKNOWLEDGE message.

7. The integrated access and backhaul indication information is transmitted from the first base station to an Access Mobility Management Function (AMF) or from the AMF to the first base station via an NG Application Protocol (NGAP) message, and each of the first base station and the second base station is an integrated access and backhaul donor central unit (CU) or an integrated access and backhaul donor gNB; 2. The information transmission method of claim 1, wherein the mobile integrated access and backhaul node information indicates that a base station or an AMF supports mobile integrated access and backhaul, and the integrated access and backhaul indication information is transmitted via a NG SETUP REQUEST or a NG SETUP RESPONSE or a RAN CONFIGURATION UPDATE or a RAN CONFIGURATION UPDATE ACKNOWLEDGE or an AMF CONFIGURATION UPDATE or an AMF CONFIGURATION UPDATE ACKNOWLEDGE.

8. 1. A method for transmitting information, comprising: an integrated access and backhaul node transmitting integrated access and backhaul indication information to a first base station, the integrated access and backhaul node communicating with and movable with a plurality of mobile terminals, the integrated access and backhaul indication information including a group mobility indication indicating that the plurality of mobile terminals support group mobility; performing handover of the plurality of mobile terminals between the first base station and a second base station that receives the integrated access and backhaul indication information including the group mobility indication from the first base station; An information transmission method comprising:

9. The integrated access and backhaul indication information is transmitted via a Radio Resource Control (RRC) message, or an RRC configuration complete message, or a measurement report message, or a UE assistance information message; The group mobility indication indicates that a plurality of mobile terminals support or intend to perform group mobility, or the integrated access and backhaul node is configured to perform group mobility.

9. The method of claim 8, further comprising: indicating an intention to

10. The information transmission method of claim 8 , wherein the group mobility indication indicates that the integrated access and backhaul node supports group mobility.

11. the integrated access and backhaul indication information is transmitted from the first base station to the second base station via an Xn Application Protocol (XnAP) message; Each of the first base station and the second base station is an integrated access and backhaul donor central unit (CU) or an integrated access and backhaul donor gNB; The information transmission method of claim 8, wherein the integrated access and backhaul indication information is sent via an XN SETUP REQUEST, or an XN SETUP RESPONSE, or an NG-RAN NODE CONFIGURATION UPDATE, or an NG-RAN NODE CONFIGURATION UPDATE ACKNOWLEDGE message.

12. The integrated access and backhaul indication information is transmitted from the first base station to an Access Mobility Management Function (AMF) or from the AMF to the second base station via an NG Application Protocol (NGAP) message; Each of the first base station and the second base station is an integrated access and backhaul donor central unit (CU) or an integrated access and backhaul donor gNB; The information transmission method according to claim 8, wherein the integrated access and backhaul indication information is sent via a NG SETUP REQUEST or a NG SETUP RESPONSE or a RAN CONFIGURATION UPDATE or a RAN CONFIGURATION UPDATE ACKNOWLEDGE or an AMF CONFIGURATION UPDATE or an AMF CONFIGURATION UPDATE ACKNOWLEDGE.

13. The information transmission method of claim 1 , wherein the second base station is an integrated access and backhaul donner central unit (CU) or an integrated access and backhaul donner gNB.

14. A wireless communication device comprising a processor configured to carry out the information transmission method according to any one of claims 1 to 7 and 13.

15. A computer readable medium having stored thereon code which, when executed by a processor, causes the processor to perform the information transmission method of any one of claims 1 to 7 and 13.

16. A wireless communication device comprising a processor configured to execute the information transmission method according to any one of claims 8 to 12.

17. A computer-readable medium having stored code which, when executed by a processor, causes the processor to perform an information transmission method described in any one of claims 8 to 12.

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