Integrated access backhaul node state change processing method, device and system

Abstract

The invention relates to an integrated access backhaul node state change processing method, device and system, and relates to the technical field of communication. The method for processing the state change of the integrated access backhaul node is executed by a network element of a core network, and comprises the following steps: under the condition that the authorization state of the integrated access backhaul IAB node is changed, sending first indication information to IAB user equipment (IAB-UE) in the IAB node, the first indication information comprising the changed authorization state of the IAB node, and the first indication information comprising the changed authorization state of the IAB node; and enabling the IAB-UE to change the state of providing the relay service for other UE according to the first indication information.

Description

Technical Field

[0001] The present disclosure relates to the field of communication technology, and in particular to a process, device, and system for integrating access backhaul node status changes. Background Art

[0002] 5G (5th Generation Mobile Communication Technology) uses the Uu interface for backhaul, known as IAB (Integrated Access Backhaul). In an IAB network, an IAB node provides wireless access services for user equipment (UE). The UE's service data is sent by the IAB node to an IAB donor via a wireless backhaul link.

[0003] 5G Core (5G Core Network) can manage IAB nodes using some of the same methods used to manage UEs. IAB nodes must be authorized before they can provide access services or relay services to other UEs. Summary of the Invention

[0004] The inventors discovered that the authorization status of an IAB node can change due to operational or other reasons. However, this change in authorization status is not initiated by the IAB node, and therefore the IAB node is unaware of it. Furthermore, the standard lacks a corresponding process design. If the authorization status of an IAB node changes, but the IAB node continues to provide relay services to other UEs or denies access to them in the same state, communication quality will deteriorate, making the IAB technology ineffective.

[0005] A technical problem to be solved by the present disclosure is: how to improve the accuracy and effectiveness of IAB technology implementation and improve communication quality.

[0006] According to some embodiments of the present disclosure, a method for processing a change in the status of an integrated access backhaul node is provided, which is executed by a core network network element, including: when the authorization status of the integrated access backhaul IAB node changes, sending first indication information to an IAB user equipment IAB-UE in the IAB node, wherein the first indication information includes: the changed authorization status of the IAB node, so that the IAB-UE changes its status of providing relay services to other UEs according to the first indication information.

[0007] In some embodiments, the first indication information is sent to the IAB-UE in the IAB node through a deregistration procedure.

[0008] In some embodiments, sending the first indication information to the IAB-UE in the IAB node through the deregistration process includes: sending a deregistration request to the IAB-UE, wherein the deregistration request includes re-registration indication information; receiving a registration request from the IAB-UE; and sending a registration acceptance message to the IAB-UE, wherein the registration acceptance message includes the first indication information.

[0009] In some embodiments, the first indication information is sent to the IAB-UE in the IAB node through a configuration update procedure.

[0010] In some embodiments, sending the first indication information to the IAB-UE in the IAB node through the configuration update process includes: sending a UE configuration update command to the IAB-UE, wherein the UE configuration update command includes the first indication information.

[0011] In some embodiments, when the authorization state of the IAB node changes from authorized to unauthorized, the IAB-UE no longer provides IAB relay services for other UEs; and / or when the authorization state of the IAB node changes from unauthorized to authorized, the IAB-UE starts to provide IAB relay services for other UEs.

[0012] According to other embodiments of the present disclosure, a method for processing a change in the state of an integrated access backhaul node is provided, including: being executed by a core network network element, including: when the authorization state of the integrated access backhaul IAB node changes, sending second indication information to the access network node, wherein the second indication information includes: the changed authorization state of the IAB node, so that the access network node changes the state of providing data forwarding services for other UEs to the IAB user equipment IAB-UE in the IAB node according to the second indication information.

[0013] In some embodiments, the second indication information is sent to the access network node via an N2 interface message.

[0014] In some embodiments, the N2 interface message includes at least one of a UE context modification request message, an initial context establishment request message, and a downlink non-access layer transmission message, and sending the second indication information to the access network node through the N2 interface message includes at least one of the following: sending a UE context modification request message to the access network node, wherein the UE context modification request message includes the second indication information; sending an initial context establishment request message to the access network node, wherein the initial context establishment request message includes the second indication information; sending a downlink non-access layer transmission message to the access network node, wherein the downlink non-access layer transmission message includes the second indication information.

[0015] In some embodiments, when the authorization state of the IAB node changes from authorized to unauthorized, the access network node no longer provides data forwarding services for other UEs for the IAB-UE; and / or when the authorization state of the IAB node changes from unauthorized to authorized, the access network node starts to provide data forwarding services for other UEs for the IAB-UE.

[0016] In some embodiments, the method further includes: receiving a notification of a change in the authorization status of the IAB node sent by other core network elements; and / or determining a change in the authorization status of the IAB node based on background operation information.

[0017] According to some further embodiments of the present disclosure, a core network network element is provided, including: a sending module, configured to send first indication information to an IAB user equipment (IAB-UE) in the IAB node when the authorization status of the integrated access backhaul (IAB) node changes, wherein the first indication information includes: the changed authorization status of the IAB node, so that the IAB-UE changes its status of providing relay services to other UEs according to the first indication information.

[0018] According to some further embodiments of the present disclosure, a core network network element is provided, including: a sending module, configured to send second indication information to an access network node when the authorization status of an integrated access backhaul (IAB) node changes, wherein the second indication information includes: the changed authorization status of the IAB node, so that the access network node changes the status of providing data forwarding services for other UEs to an IAB user equipment (IAB-UE) in the IAB node according to the second indication information.

[0019] According to some further embodiments of the present disclosure, a communication system is provided, comprising: a core network network element of any embodiment of the present disclosure; and an integrated access backhaul IAB node and an access network node, wherein the IAB node comprises an IAB user equipment IAB-UE, and when the core network network element sends first indication information to the IAB node, the IAB-UE is used to receive the first indication information sent by the core network network element when the authorization status of the IAB node changes, and change its status of providing relay services to other UEs according to the first indication information, wherein the first indication information includes: the changed authorization status of the IAB node; when the core network network element sends second indication information to the access network node, the access network node is used to receive the second indication information sent by the core network network element, wherein the second indication information includes: the changed authorization status of the IAB node.

[0020] According to some further embodiments of the present disclosure, an electronic device is provided, comprising: a processor; and a memory coupled to the processor, for storing instructions, which, when executed by the processor, causes the processor to execute a method for processing an integrated access backhaul node state change as described in any embodiment of the present disclosure.

[0021] According to some further embodiments of the present disclosure, a computer-readable storage medium is provided, on which a computer program is stored, wherein when the program is executed by a processor, the steps of the method for processing the state change of an integrated access backhaul node of any embodiment of the present disclosure are implemented.

[0022] According to some further embodiments of the present disclosure, a computer program product is provided, comprising: instructions, wherein when the instructions are executed by a processor, the steps of the method for processing the state change of an integrated access backhaul node of any embodiment of the present disclosure are implemented.

[0023] In the disclosed method, when the authorization status of an IAB node changes, a core network element sends first indication information to an IAB-UE in the IAB node. The first indication information includes the changed authorization status of the IAB node, which enables the IAB-UE to change its relay service status for other UEs based on the first indication information. The core network element promptly notifies the IAB-UE of the change in the authorization status of the IAB node, allowing the IAB-UE to make timely changes to subsequent service statuses, thereby improving the accuracy and effectiveness of IAB technology implementation and enhancing communication quality.

[0024] Other features and advantages of the present disclosure will become apparent from the following detailed description of exemplary embodiments of the present disclosure with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0026] Figure 1 A schematic diagram illustrating the architecture of an integrated access backhaul system according to some embodiments of the present disclosure is shown.

[0027] Figure 2 A flowchart illustrating a method for processing an integrated access backhaul node state change according to some embodiments of the present disclosure is shown.

[0028] Figure 3A A signaling flow diagram illustrating a method for processing an integrated access backhaul node state change according to some embodiments of the present disclosure is shown.

[0029] Figure 3B A signaling flow diagram illustrating a method for processing an integrated access backhaul node state change according to other embodiments of the present disclosure is shown.

[0030] Figure 4 A flowchart illustrating a method for processing an integrated access backhaul node state change according to other embodiments of the present disclosure is shown.

[0031] Figure 5 A signaling flow diagram illustrating a method for processing an integrated access backhaul node state change according to some embodiments of the present disclosure is shown.

[0032] Figure 6 A schematic structural diagram of a core network element according to some embodiments of the present disclosure is shown.

[0033] Figure 7 A schematic structural diagram of a communication system according to some embodiments of the present disclosure is shown.

[0034] Figure 8 A schematic structural diagram of an electronic device according to some embodiments of the present disclosure is shown.

[0035] Figure 9 Schematic diagrams showing the structure of electronic devices according to other embodiments of the present disclosure. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present disclosure and its application or use. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present disclosure.

[0037] User Equipment (UE) can also be called a terminal, mobile station, or mobile device. In a wireless network, a UE is a device with wireless transceiver capabilities that can communicate with one or more Core Network (CN) elements via a Radio Access Network (RAN) access element.

[0038] A (radio) access network (RAN) provides network access for authorized user devices (UEs) in a specific area and can utilize transmission tunnels of varying quality based on UE level and service requirements. For example, the (R)AN manages radio resources, provides access services to UEs, and forwards control information and / or data between UEs and the core network. Access network equipment can include the next-generation base station (gNB) in 5G systems.

[0039] The core network includes multiple core network elements (or network function network elements), such as: Access and Mobility Management Function (AMF) network element, Session Management Function (SMF) network element, User Plane Function (UPF) network element, Unified Data Management (UDM) network element, Application Layer Function (AF) network element, Policy Control Function (PCF) network element, Authentication Server Function (AUSF) network element, Edge Application Server Discovery Function (EASDF) network element and Network Exposure Function (NEF) network element.

[0040] like Figure 1 Figure 2 shows a schematic diagram of an IAB architecture. The RAN communicates with the 5G core (5GC) via the NG interface. The RAN includes the gNB, IAB-node, and IAB-donor gNB. The IAB-donor gNB (abbreviated as IAB-donor) includes the gNB-CU (control unit) and gNB-DU (data unit). The gNB-CU primarily handles non-real-time higher-layer radio protocol stack functions, such as Radio Resource Control (RRC) and Packet Data Convergence Protocol (PDCP). The gNB-DU primarily handles physical layer functions and Layer 2 functions with high real-time requirements, such as the physical layer (PHY), media access control (MAC), and radio link control (RLC).

[0041] The IAB node can be divided into two parts: the IAB-UE and the gNB-DU. The IAB-UE connects to the IAB donor-DU via the NR-Uu air interface. The gNB-DU, in turn, provides the NR-Uu air interface to other UEs, offering access services. The gNB-DU logically connects to the IAB donor-CU via the F1 interface, receiving control signals from the IAB donor-CU and transmitting user plane data. This F1 connection is carried over the NR-Uu connection between the IAB-UE and the IAB donor-DU, meaning that data on the F1 interface is transmitted over the air interface.

[0042] Due to operation and maintenance reasons or other reasons, the authorization status of the IAB node can be changed. However, this change in authorization status is not initiated by the IAB node, so the IAB node cannot be informed, and there is no corresponding process design in the standard. In view of this, the present disclosure proposes a method for processing the status change of the integrated access backhaul node. Figures 2 to 5 Provide a description.

[0043] Figure 2 This is a flow chart of some embodiments of the method for processing the state change of the integrated access backhaul node disclosed in the present invention. Figure 2 As shown, the method of this embodiment includes steps S202 to S204.

[0044] In step S202, when the authorization status of the IAB node changes, the core network element sends first indication information to the IAB-UE in the IAB node. Correspondingly, the IAB-UE receives the first indication information sent by the core network element.

[0045] In some embodiments, the core network element is an AMF and the IAB node is a registered node.

[0046] The authorization state is used to indicate whether the IAB node is authorized to provide access services or relay services to other UEs. For example, the first indication information includes: the authorization state (Authorization State) of the IAB node after the change, and / or, the first indication information includes: an identifier of the authorization state change of the IAB node. The authorization state may include two states: authorized and unauthorized (non-authorized). The authorization state may change from authorized to unauthorized, or from unauthorized to authorized. For example, the authorization state of the IAB node after the change may be represented by a first preset value, for example, 1 indicates that the authorization state is authorized, and 0 indicates that the authorization state is unauthorized. The identifier of the change of the authorization state of the IAB node may be represented by a second preset value, for example, the identifier of the change of the authorization state of the IAB node is 1, indicating that the authorization state of the IAB node has changed, and the identifier of the change of the authorization state of the IAB node is 0, indicating that the authorization state of the IAB node has not changed, that is, the first indication information may indicate whether the authorization state of the IAB node has changed. The first indication information may also include an identifier of the IAB node.

[0047] In some embodiments, a core network element receives a notification of an authorization status change of an IAB node sent by another core network element; and / or determines the authorization status change of the IAB node according to background operation information.

[0048] For example, the core network element receives the IAB-UE authorization status change notification for AMF, which may be a UDM notification or triggered by background operations.

[0049] In some embodiments, the core network element sends the first indication information to the IAB-UE in the IAB node through a deregistration process.

[0050] In some embodiments, the core network element sends the first indication information to the IAB-UE in the IAB node through the deregistration process, including: the core network element sends a deregistration request (Deregistration Request) to the IAB-UE, wherein the deregistration request includes re-registration indication information; receives the registration request of the IAB-UE; and sends a registration accept (Registration Accept) message to the IAB-UE, wherein the registration accept message includes the first indication information.

[0051] After the deregistration process is completed between the core network element and the IAB-UE, the core network element sends the first indication information to the IAB-UE through the reregistration process. A third preset value may be used to represent the reregistration indication information, for example, 11 is used to indicate reregistration.

[0052] Take the core network element AMF as an example, Figure 3AAs shown, the AMF receives a notification of a change in the authorization status of the IAB-node. The AMF sends a deregistration request (Deregistration Request) to the IAB-UE (or IAB-node), and the deregistration request carries re-registration indication information. The IAB-UE sends a registration request (Registration Request) to the AMF. The AMF sends a registration accept (Registration Request) message to the IAB-UE, and the registration accept message carries the first indication information, that is, the authorization status of the IAB node after the change. Before the IAB-UE sends a registration request to the AMF, the AMF and the IAB-UE can complete the deregistration process. For example, the IAB-UE sends a deregistration accept (Deregistration Accept) message to the AMF. For example, the process of AMF interacting with other core network elements to deregister the IAB-UE can refer to the existing standards and will not be repeated here.

[0053] In some embodiments, the core network element sends the first indication information to the IAB-UE in the IAB node through a configuration update (UE Configuration Update) process.

[0054] In some embodiments, the core network element sending the first indication information to the IAB-UE in the IAB node through the configuration update process includes: the core network element sending a UE configuration update command to the IAB-UE, wherein the UE configuration update command includes the first indication information.

[0055] Take the core network element AMF as an example, Figure 3B As shown, the AMF receives a notification of a change in the authorization status of the IAB-node. The AMF sends a UE Configuration Update command to the IAB-UE (or IAB-node), and the configuration update command carries the first indication information, that is, the authorization status of the IAB node after the change.

[0056] In the above embodiments, when the IAB authorization status of the registered IAB node changes (authorized or unauthorized), the AMF updates the IAB-UE accordingly, and the AMF may use deregistration (including an option indicating that re-registration is required) and / or UE configuration update procedures to notify the IAB-UE of the updated authorization status.

[0057] In step S204, the IAB-UE (IAB-node) changes its state of providing relay service for other UEs according to the first indication information.

[0058] In some embodiments, when the authorization state of the IAB node changes from authorized to unauthorized, the IAB-UE no longer provides IAB relay services for other UEs; and / or when the authorization state of the IAB node changes from unauthorized to authorized, the IAB-UE starts to provide IAB relay services for other UEs.

[0059] An IAB-UE can connect to the IAB donor-DU via the NR-Uu air interface. The gNB-DU, in turn, provides the NR-Uu air interface to other UEs in the form of a DU, offering access services. For example, if the IAB-node's authorization status changes from authorized to unauthorized, the IAB-UE can no longer send data from other UEs to the IAB donor-DU, and the gNB-DU will no longer provide access services. Conversely, the IAB-UE will begin sending data from other UEs to the IAB donor-DU.

[0060] When the authorization status of an IAB-node changes from authorized to unauthorized, the IAB-node may no longer provide IAB relay services or access services to other UEs. If another UE issues an access request or transmits data to the IAB-node, the IAB-node will send a rejection message. When the authorization status of an IAB-node changes from unauthorized to authorized, the IAB-node may begin providing IAB relay services or access services to other UEs. If another UE issues an access request or transmits data to the IAB-node, the IAB-node may allow the other UE to access or forward the data to the IAB donor-DU via the IAB-UE.

[0061] In the method of the above embodiment, when the authorization status of an IAB node changes, the core network element sends first indication information to the IAB-UE in the IAB node. The first indication information includes the changed authorization status of the IAB node, which enables the IAB-UE to change its status of providing relay services to other UEs based on the first indication information. The core network element promptly notifies the IAB-UE of the change in the authorization status of the IAB node, allowing the IAB-UE to make timely changes to subsequent service status, thereby improving the accuracy and effectiveness of IAB technology implementation and enhancing communication quality.

[0062] The above embodiments provide methods for notifying the IAB node when its authorization status changes due to operational or other reasons. However, nodes in the (wireless) access network are unaware of these authorization status changes. For example, if an IAB node changes from authorized to unauthorized, if the access network node continues to communicate with other UEs through the IAB node, communication will be interrupted, preventing the accurate and effective implementation of IAB technology. In light of this, the present disclosure also provides further embodiments of methods for handling status changes in integrated access backhaul nodes.

[0063] Figure 4 Flowchart of other embodiments of the method for processing the state change of integrated access backhaul node disclosed in the present invention. Figure 4 As shown, the method of this embodiment includes: steps S402 to S404.

[0064] In step S402, when the authorization status of the IAB node changes, the core network element sends second indication information to the access network node. Correspondingly, the access network node receives the second indication information sent by the core network element.

[0065] For example, the core network element is AMF and the access network node is gNB.

[0066] In some embodiments, the second indication information includes: the changed authorization status of the IAB node, and / or the second indication information includes: an identifier of the IAB node authorization status change. The second indication information may also include an identifier of the IAB node. There may be multiple IAB nodes, and the gNB may identify which IAB node has a changed authorization status based on the identifier of the IAB node.

[0067] The authorization status may include two states: authorized and unauthorized (non-authorized). The authorization status may change from authorized to unauthorized, or from unauthorized to authorized. For example, the changed authorization status of the IAB node may be represented by a first preset value, for example, 1 indicates that the authorization status is authorized, and 0 indicates that the authorization status is unauthorized. The identifier of the change in the authorization status of the IAB node may be represented by a second preset value, for example, the identifier of the change in the authorization status of the IAB node is 1, indicating that the authorization status of the IAB node has changed, and the identifier of the change in the authorization status of the IAB node is 0, indicating that the authorization status of the IAB node has not changed, that is, the second indication information may indicate whether the authorization status of the IAB node has changed.

[0068] In some embodiments, the core network element sends the second indication information to the access network node via an N2 interface message.

[0069] Take the core network element AMF as an example, Figure 5As shown, the AMF receives a notification of a change in the authorization status of the IAB-node, which may be a UDM notification or a background operation. The AMF sends an N2 message to the access network node (gNB). The N2 message includes the second indication information, that is, the N2 message carries the changed authorization status of the IAB node.

[0070] In some embodiments, the N2 interface message includes at least one of a UE context modification (UE Context Modification) request message, an initial context setup (Initial Context Setup) request message and a downlink non-access layer transmission (Downlink NAS Transport) message, and sending the second indication information to the access network node through the N2 interface message includes at least one of the following: sending a UE context modification request message to the access network node, wherein the UE context modification request message includes the second indication information; sending an initial context setup request message to the access network node, wherein the initial context setup request message includes the second indication information; sending a downlink non-access layer transmission message to the access network node, wherein the downlink non-access layer transmission message includes the second indication information.

[0071] For example, the AMF adds a new authorization status parameter through at least one of the messages UE Context Modification, Initial Context Setup, and Downlink NAS Transport, and notifies the gNB.

[0072] In step 404, the access network node changes the state of providing the data forwarding service for other UEs to the IAB-UE in the IAB node according to the second indication information.

[0073] In some embodiments, when the authorization state of the IAB node changes from authorized to unauthorized, the access network node no longer provides data forwarding services for other UEs for the IAB-UE; and / or when the authorization state of the IAB node changes from unauthorized to authorized, the access network node starts to provide data forwarding services for other UEs for the IAB-UE.

[0074] For example, if the authorization status of an IAB node changes from authorized to unauthorized, the gNB stops sending data of other UEs to the IAB node, and the IAB node no longer forwards the data of other UEs. Conversely, the gNB starts receiving data of other UEs forwarded by the IAB node, or sends data of other UEs to the IAB node, and the IAB node forwards the data.

[0075] In the above embodiment, when the IAB authorization status of the registered IAB node changes (authorized or unauthorized), the AMF updates the NG-RAN accordingly. The AMF notifies the NG-RAN of the new authorization status using UE Context Modification, Initial Context Establishment procedures, or downlink NAS transport messages.

[0076] The embodiments of the present disclosure can be combined. For example, when the authorization status of the IAB node changes, the core network element sends first indication information to the IAB-UE in the IAB node and sends second indication information to the access network node. The specific method can refer to the above embodiment and will not be repeated here.

[0077] In the method of the above embodiment, when the authorization status of an IAB node changes, the core network element sends second indication information to the access network node. The second indication information includes the changed authorization status of the IAB node, which can cause the access network node to change the state of providing data forwarding services to other UEs to the IAB-UE in the IAB node based on the second indication information. The core network element promptly notifies the access network node of the change in the authorization status of the IAB node, allowing the access network node to make timely changes to subsequent service status, thereby improving the accuracy and effectiveness of IAB technology implementation and enhancing communication quality.

[0078] In this disclosure, the core network element notifies the IAB-UE: the AMF uses the deregistration process to notify the IAB-UE to deregister, requiring the IAB-UE to reregister. When the IAB-UE reregisters, its authorization status is updated through the registration process. Alternatively, the AMF notifies the IAB-UE through the configuration update process to update its authorization status. The IAB-UE updates its status accordingly. If it becomes unauthorized, it will no longer provide services to other UEs. If it becomes authorized, it will continue to provide services to other UEs. The core network element notifies the gNB: through context modification, context establishment, or downlink NAS transmission messages, it notifies the gNB to modify the IAB-UE's authorization status. If it becomes unauthorized, traffic will no longer be forwarded to UEs served by the IAB-UE. If it becomes authorized, traffic can be forwarded to UEs served by the IAB-UE.

[0079] In some embodiments, when the authorization status of an IAB node changes, a core network element sends first indication information to an IAB-UE in the IAB node. The IAB node sends third indication information to an access network node, where the third indication information includes the changed authorization status of the IAB node. The IAB node notifies the access network node of the change in authorization status.

[0080] In some embodiments, when the authorization status of an IAB node changes, the core network element sends second indication information to the access network node, and the access network node sends fourth indication information to the IAB node, the fourth indication information including the changed authorization status of the IAB node. The access network node notifies the IAB node of the change in authorization status.

[0081] The present disclosure also provides a core network element, Figure 6 Provide a description.

[0082] Figure 6 Figure 1 is a structural diagram of some embodiments of the core network element disclosed in the present invention. Figure 6 As shown, the core network element 60 of this embodiment includes: a first sending module 610 and / or a second sending module 620.

[0083] The first sending module 610 is configured to send first indication information to an IAB user equipment (IAB-UE) in the IAB node when the authorization status of the integrated access backhaul (IAB) node changes, wherein the first indication information includes: the changed authorization status of the IAB node, so that the IAB-UE changes its status of providing relay services for other UEs according to the first indication information.

[0084] In some embodiments, the first sending module 610 is configured to send first indication information to the IAB-UE in the IAB node through a deregistration process.

[0085] In some embodiments, the core network element 60 further includes a receiving module 630, and the first sending module 610 is used to send a deregistration request to the IAB-UE, wherein the deregistration request includes re-registration indication information; the receiving module 630 is used to receive the registration request of the IAB-UE; the first sending module 610 is used to send a registration acceptance message to the IAB-UE, wherein the registration acceptance message includes the first indication information.

[0086] In some embodiments, the first sending module 610 is configured to send first indication information to the IAB-UE in the IAB node through a configuration update procedure.

[0087] In some embodiments, the first sending module 610 is configured to send a UE configuration update command to the IAB-UE, wherein the UE configuration update command includes first indication information.

[0088] In some embodiments, when the authorization state of the IAB node changes from authorized to unauthorized, the IAB-UE no longer provides IAB relay services for other UEs; and / or when the authorization state of the IAB node changes from unauthorized to authorized, the IAB-UE starts to provide IAB relay services for other UEs.

[0089] The second sending module 620 is configured to send second indication information to the access network node when the authorization status of the integrated access backhaul IAB node changes, wherein the second indication information includes: the changed authorization status of the IAB node, so that the access network node changes the status of providing data forwarding services for other UEs to the IAB user equipment IAB-UE in the IAB node according to the second indication information.

[0090] In some embodiments, the second sending module 620 is configured to send the second indication information to the access network node via an N2 interface message.

[0091] In some embodiments, the N2 interface message includes at least one of a UE context modification request message, an initial context establishment request message, and a downlink non-access layer transmission message, and the second sending module 620 is used to perform at least one of the following: sending a UE context modification request message to the access network node, wherein the UE context modification request message includes second indication information; sending an initial context establishment request message to the access network node, wherein the initial context establishment request message includes the second indication information; sending a downlink non-access layer transmission message to the access network node, wherein the downlink non-access layer transmission message includes the second indication information.

[0092] In some embodiments, when the authorization state of the IAB node changes from authorized to unauthorized, the access network node no longer provides data forwarding services for other UEs for the IAB-UE; and / or when the authorization state of the IAB node changes from unauthorized to authorized, the access network node starts to provide data forwarding services for other UEs for the IAB-UE.

[0093] In some embodiments, the receiving module 630 is further configured to receive a notification of an authorization status change of an IAB node sent by other core network elements; and / or determine an authorization status change of an IAB node according to background operation information.

[0094] The present disclosure also provides a communication system, Figure 7 Provide a description.

[0095] Figure 7 Figure 1 is a structural diagram of some embodiments of the communication system disclosed herein. Figure 7 As shown, the system 7 of this embodiment includes: the core network element 60 of any of the above embodiments, an IAB node 72 and an access network node 74, wherein the IAB node 72 includes an IAB user equipment IAB-UE.

[0096] In the case where the core network network element sends the first indication information to the IAB node 72, the IAB-UE is used to receive the first indication information sent by the core network network element when the authorization status of the IAB node changes, and change its status of providing relay services to other UEs according to the first indication information, wherein the first indication information includes: the changed authorization status of the IAB node; in the case where the core network network element sends the second indication information to the access network node, the access network node 74 is used to receive the second indication information sent by the core network network element, wherein the second indication information includes: the changed authorization status of the IAB node.

[0097] The core network element, IAB node and access network node can execute the corresponding method in any of the aforementioned embodiments, which will not be described in detail here.

[0098] The electronic devices (eg, core network elements, IAB nodes, access network nodes) in the embodiments of the present disclosure may be implemented by various computing devices or computer systems. Figure 8 as well as Figure 9 Provide a description.

[0099] Figure 8 Figure 1 is a structural diagram of some embodiments of the electronic device disclosed herein. Figure 8 As shown, the electronic device 80 of this embodiment includes: a memory 810 and a processor 820 coupled to the memory 810, and the processor 820 is configured to execute the processing method of the integrated access backhaul node state change in any of some embodiments of the present disclosure based on the instructions stored in the memory 810.

[0100] The memory 810 may include, for example, a system memory, a fixed non-volatile storage medium, etc. The system memory may store, for example, an operating system, an application program, a boot loader, a database, and other programs.

[0101] Figure 9 FIG. 1 is a structural diagram of some other embodiments of the electronic device disclosed herein. Figure 9 As shown, the electronic device 90 of this embodiment includes: a memory 910 and a processor 920, which are similar to the memory 810 and the processor 820, respectively. It may also include an input / output interface 930, a network interface 940, a storage interface 950, etc. These interfaces 930, 940, 950 and the memory 910 and the processor 920 can be connected, for example, via a bus 960. Among them, the input / output interface 930 provides a connection interface for input / output devices such as a display, mouse, keyboard, and touch screen. The network interface 940 provides a connection interface for various networked devices, such as a database server or a cloud storage server. The storage interface 950 provides a connection interface for external storage devices such as SD cards and USB flash drives.

[0102] Those skilled in the art will appreciate that embodiments of the present disclosure may be provided as methods, systems, or computer program products. Therefore, the present disclosure may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Furthermore, the present disclosure may take the form of a computer program product implemented on one or more computer-usable non-transient storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0103] The present disclosure is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present disclosure. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0104] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0105] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 The steps for the function specified in one or more boxes.

[0106] The above description is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present disclosure should be included in the scope of protection of the present disclosure.

Claims

1. A method for processing state changes of an integrated access backhaul node, executed by a core network element, comprising: In a case where the authorization status of an integrated access backhaul (IAB) node changes, first indication information is sent to an IAB user equipment (IAB-UE) in the IAB node, wherein the first indication information includes: the changed authorization status of the IAB node, so that the IAB-UE changes its status of providing relay services for other UEs according to the first indication information.

2. The processing method according to claim 1, wherein The first indication information is sent to the IAB-UE in the IAB node through a deregistration process.

3. The processing method according to claim 2, wherein: The sending the first indication information to the IAB-UE in the IAB node through the deregistration process includes: Sending a deregistration request to the IAB-UE, wherein the deregistration request includes re-registration indication information; receiving a registration request from the IAB-UE; Send a registration accept message to the IAB-UE, where the registration accept message includes the first indication information.

4. The processing method according to claim 1, wherein: The first indication information is sent to the IAB-UE in the IAB node through a configuration update process.

5. The processing method according to claim 4, wherein: The sending the first indication information to the IAB-UE in the IAB node through the configuration update process includes: Send a UE configuration update command to the IAB-UE, where the UE configuration update command includes the first indication information.

6. The processing method according to claim 1, wherein: When the authorization status of the IAB node changes from authorized to unauthorized, the IAB-UE no longer provides IAB relay services for other UEs; and / or When the authorization status of the IAB node changes from unauthorized to authorized, the IAB-UE starts to provide IAB relay service for other UEs.

7. A method for processing state changes of an integrated access backhaul node, executed by a core network element, comprising: In the event that the authorization status of the integrated access backhaul (IAB) node changes, second indication information is sent to the access network node, wherein the second indication information includes: the changed authorization status of the IAB node, so that the access network node changes the state of providing data forwarding services for other UEs to the IAB user equipment (IAB-UE) in the IAB node according to the second indication information.

8. The processing method according to claim 7, wherein: The second indication information is sent to the access network node through an N2 interface message.

9. The processing method according to claim 8, wherein: The N2 interface message includes at least one of a UE context modification request message, an initial context establishment request message, and a downlink non-access layer transmission message, and the sending of the second indication information to the access network node through the N2 interface message includes at least one of the following: Sending the UE context modification request message to the access network node, wherein the UE context modification request message includes the second indication information; Sending the initial context establishment request message to the access network node, wherein the initial context establishment request message includes the second indication information; Send the downlink non-access layer transmission message to the access network node, wherein the downlink non-access layer transmission message includes the second indication information.

10. The processing method according to claim 7, wherein: When the authorization status of the IAB node changes from authorized to unauthorized, the access network node no longer provides data forwarding services for other UEs for the IAB-UE; and / or When the authorization state of the IAB node changes from unauthorized to authorized, the access network node starts to provide the IAB-UE with a data forwarding service for other UEs.

11. The processing method according to any one of claims 1 to 10, further comprising: receiving a notification of a change in the authorization status of the IAB node sent by another core network element; and / or Determine the authorization status change of the IAB node according to the background operation information.

12. A core network element, comprising: A sending module is configured to send first indication information to an IAB user equipment (IAB-UE) in the IAB node when the authorization status of the integrated access backhaul (IAB) node changes, wherein the first indication information includes: the changed authorization status of the IAB node, so that the IAB-UE changes its state of providing relay services for other UEs according to the first indication information.

13. A core network element, comprising: A sending module is configured to send second indication information to an access network node when the authorization status of an integrated access backhaul (IAB) node changes, wherein the second indication information includes: the changed authorization status of the IAB node, so that the access network node changes the state of providing data forwarding services for other UEs to an IAB user equipment (IAB-UE) in the IAB node according to the second indication information.

14. A communication system comprising: The core network element according to claim 12 or 13; and integrated access backhaul IAB node and access network node, wherein the IAB node includes IAB user equipment IAB-UE, When the core network element sends the first indication information to the IAB node, the IAB-UE is configured to receive the first indication information sent by the core network element when the authorization status of the IAB node changes, and change the state of providing a relay service for other UEs according to the first indication information, wherein the first indication information includes: the changed authorization status of the IAB node; In the case where the core network element sends the second indication information to the access network node, the access network node is configured to receive the second indication information sent by the core network element, wherein the second indication information includes: the changed authorization status of the IAB node.

15. An electronic device comprising: processor; as well as A memory coupled to the processor is used to store instructions, and when the instructions are executed by the processor, the processor executes the method for processing the state change of the integrated access backhaul node according to any one of claims 1 to 11.

16. A computer-readable storage medium having a computer program stored thereon, wherein: When the program is executed by a processor, the steps of the method for processing the state change of the integrated access backhaul node according to any one of claims 1 to 11 are implemented.

17. A computer program product comprising: Instruction, wherein when the instruction is executed by the processor, the steps of the method for processing the state change of the integrated access backhaul node according to any one of claims 1 to 11 are implemented.

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