CN-122002403-A - Base station, mobile terminal, node and method for performing the same in wireless communication system

Abstract

The present disclosure provides a base station, a mobile terminal, a node, and methods performed thereby in a wireless communication system. A method performed by a wireless access backhaul, WAB, base station in a wireless communication system includes sending a first message to a second node, the first message associated with a request to suspend an NG interface between the WAB base station and the second node, and receiving a message from the second node in response to the request, wherein the first message includes at least one of first time information related to a time to suspend the NG interface, first historical location information of the WAB base station, second historical location information of a co-located wireless access backhaul, mobile terminal, WAB-MT, of the WAB base station, information related to a context of the NG interface that the WAB base station suggests to release, information related to a context of the NG interface that the WAB base station does not suggest to release.

Inventors

• KONG FANHUA
• WANG WEIWAI

Assignees

• 北京三星通信技术研究有限公司
• 三星电子株式会社

Dates

Publication Date

20260508

Application Date

20241107

Claims (20)

1. 1. A method performed by a wireless access backhaul, WAB, base station in a wireless communication system, comprising: Transmitting a first message to a second node, the first message being associated with a request to suspend an NG interface between the WAB base station and the second node, and Receiving a message from the second node in response to the request, Wherein the first message includes at least one of: First time information related to a time for suspending the NG interface, first historical location information of the WAB base station, second historical location information of a co-located wireless access backhaul mobile terminal WAB-MT of the WAB base station, information related to a context of the NG interface that the WAB base station suggests to release, information related to a context of the NG interface that the WAB base station does not suggest to release; Wherein the message includes at least one of: Second time information related to a time for suspending the NG interface, third time information related to a time for prohibiting a suspension request of the NG interface.
2. 2. The method of claim 1, wherein the message is a second message related to the request being accepted, the second message including second time information related to a time for suspending the NG interface.
3. 3. The method of claim 1, wherein the message is a third message comprising at least one of: A first cause value associated with the request being denied, third time information associated with a time when a pending request of the NG interface is prohibited, Wherein, in case the third message comprises the first cause value, the method further comprises: sending an NG removal request related to the NG interface to the second node and/or performing a removal operation related to the NG interface.
4. 4. The method of claim 1, further comprising: sending an NG removal request message related to the NG interface to a third node, wherein the NG removal request message comprises name information of the second node and an identification of the WAB base station, Wherein the identity of the WAB base station is transmitted by the third node to the second node.
5. 5. The method of claim 4, further comprising: receiving an NG removal response message from the third node, wherein the NG removal response message includes the name information of the second node, Wherein the name information of the second node is transmitted by the second node to the third node.
6. 6. The method according to claim 1, Wherein the context of the NG interface that the WAB base station suggests to release includes at least one of: Presence attribute is optional information element IE, frequently changed information element IE, supported timing advance TA list, default paging discontinuous reception DRX, UE reservation information, narrowband Internet of things NB-IoT default paging discontinuous reception DRX, and Wherein the context of the NG interface that the WAB base station does not suggest to release includes at least one of: All information element IEs in the context of the NG interface, the presence attribute is mandatory, the information element IEs that do not change frequently, the global RAN node identity, the RAN node name, the extended RAN node name.
7. 7. The method of claim 6, wherein the second message further comprises at least one of: Information related to the context of the NG interface that the second node agrees to release, information related to the context of the NG interface that the second node does not agree to release.
8. 8. The method of claim 1, further comprising: sending a fourth message to the second node, the fourth message being associated with a request to resume the NG interface, Wherein the fourth message comprises information related to restoring the context of the NG interface.
9. 9. The method of claim 8, wherein the restored context of the NG interface comprises at least one of: All information element IEs in the context of the NG interface, released IEs in the context of the NG interface, changed IEs in the context of the NG interface and presence attribute is mandatory IEs, supported timing advance TA list, default paging discontinuous reception DRX, UE reservation information, narrowband internet of things NB-IoT default paging discontinuous reception DRX, delta information of changed information element IEs.
10. 10. A method performed by a second node in a wireless communication system, comprising: receiving a first message from a wireless access backhaul, WAB, base station, the first message being associated with a request to suspend an NG interface between the WAB base station and the second node, and Transmitting a message to the WAB base station in response to the request, Wherein the first message includes at least one of: First time information related to a time for suspending the NG interface, first historical location information of the WAB base station, second historical location information of a co-located wireless access backhaul mobile terminal WAB-MT of the WAB base station, information related to a context of the NG interface that the WAB base station suggests to release, information related to a context of the NG interface that the WAB base station does not suggest to release; Wherein the message includes at least one of: Second time information related to a time for suspending the NG interface, third time information related to a time for prohibiting a suspension request of the NG interface.
11. 11. The method of claim 10, wherein the message is a second message related to the request being accepted, the second message including second time information related to a time for suspending the NG interface.
12. 12. The method of claim 10, wherein the message is a third message comprising at least one of: A first cause value associated with the request being denied, third time information associated with a time when a pending request of the NG interface is prohibited, Wherein, in case the third message comprises the first cause value, the method further comprises: Receiving an NG removal request associated with the NG interface from the WAB base station and/or performing a removal operation associated with the NG interface.
13. 13. The method of claim 10, further comprising: Receiving an identification of the WAB base station from a third node, And sending an NG removal request message related to the NG interface from the WAB base station to the third node, wherein the NG removal request message includes name information of the second node and an identifier of the WAB base station.
14. 14. The method of claim 13, further comprising: Sending an NG removal response message to the third node, wherein the NG removal response message comprises the name information of the second node and an identification of the WAB base station, Wherein the name information of the second node is sent by the third node to the WAB base station.
15. 15. The method according to claim 10, Wherein the context of the NG interface that the WAB base station suggests to release includes at least one of: Presence attribute is optional information element IE, frequently changed information element IE, supported timing advance TA list, default paging discontinuous reception DRX, UE reservation information, narrowband Internet of things NB-IoT default paging discontinuous reception DRX, and Wherein the context of the NG interface that the WAB base station does not suggest to release includes at least one of: All information element IEs in the context of the NG interface, the presence attribute is mandatory, the information element IEs that do not change frequently, the global RAN node identity, the RAN node name, the extended RAN node name.
16. 16. The method of claim 15, wherein the second message further comprises at least one of: Information related to the context of the NG interface that the second node agrees to release, information related to the context of the NG interface that the second node does not agree to release.
17. 17. The method of claim 10, further comprising: receiving a fourth message from the WAB base station, the fourth message being associated with a request to resume the NG interface, Wherein the fourth message comprises information related to restoring the context of the NG interface.
18. 18. The method of claim 17, wherein the restored context of the NG interface comprises at least one of: All information element IEs in the context of the NG interface, released IEs in the context of the NG interface, changed IEs in the context of the NG interface and presence attribute is mandatory IEs, supported timing advance TA list, default paging discontinuous reception DRX, UE reservation information, narrowband internet of things NB-IoT default paging discontinuous reception DRX, delta information of changed information element IEs.
19. 19. A method performed by a wireless access backhaul mobile terminal, WAB-MT, in a wireless communication system, comprising: Receiving a first message from a wireless access backhaul, WAB, base station, the first message being associated with a request to suspend an NG interface between the WAB base station and a second node; transmitting the first message to the second node, and Receiving a message from the second node in response to the request, Wherein the first message includes at least one of: First time information related to a time for suspending the NG interface, first historical location information of the WAB base station, second historical location information of a co-located wireless access backhaul mobile terminal WAB-MT of the WAB base station, information related to a context of the NG interface that the WAB base station suggests to release, information related to a context of the NG interface that the WAB base station does not suggest to release; Wherein the message includes at least one of: Second time information related to a time for suspending the NG interface, third time information related to a time for prohibiting a suspension request of the NG interface.
20. 20. A wireless access backhaul, WAB, base station in a wireless communication system, comprising: a transceiver configured to transmit and receive signals, and A controller coupled with the transceiver and configured to perform the method of any of claims 1-9.

Description

Base station, mobile terminal, node and method for performing the same in wireless communication system Technical Field The present disclosure relates to the field of wireless communication technology, and more particularly, to a base station, a mobile terminal, a node, and a method performed by the same in a wireless communication system. Background In order to meet the increasing demand for wireless data communication services since the deployment of 4G communication systems, efforts have been made to develop improved 5G or quasi 5G communication systems. Therefore, a 5G or quasi 5G communication system is also referred to as a "super 4G network" or a "LTE-after-system". Wireless communication is one of the most successful innovations in modern history. Recently, the number of subscribers to wireless communication services exceeds 50 billion and continues to grow rapidly. As smartphones and other mobile data devices (e.g., tablet computers, notebook computers, netbooks, e-book readers, and machine type devices) become increasingly popular among consumers and businesses, the demand for wireless data services is rapidly growing. To meet the high-speed growth of mobile data services and support new applications and deployments, it is important to improve the efficiency and coverage of the wireless interface. Disclosure of Invention Embodiments of the present disclosure provide a method performed by a wireless access backhaul, WAB, base station in a wireless communication system, comprising sending a first message to a second node, the first message being associated with a request to suspend a NG interface between the WAB base station and the second node, and receiving a message from the second node in response to the request, wherein the first message comprises at least one of first time information related to a time to suspend the NG interface, first historical location information of the WAB base station, second historical location information of a co-located wireless access backhaul, mobile terminal, WAB-MT, of the WAB base station, information related to a context of the NG interface that the WAB base station proposes to release, information related to a context of the NG interface that the WAB base station does not propose to release, wherein the message comprises at least one of second time information related to a time to suspend the NG interface, third time information related to a time to prohibit a request to suspend the NG interface. According to an embodiment of the disclosure, the message is a second message related to the request being accepted, the second message comprising second time information related to a time for suspending the NG interface. According to an embodiment of the disclosure, the message is a third message comprising at least one of a first cause value related to the request being denied, third time information related to a time to prohibit a suspension request of the NG interface, wherein in case the third message comprises the first cause value, the method further comprises sending a NG removal request related to the NG interface and/or performing a removal operation related to the NG interface to the second node. According to an embodiment of the disclosure, the method further comprises sending an NG removal request message related to the NG interface to a third node, wherein the NG removal request message comprises name information of the second node and an identity of the WAB base station, wherein the identity of the WAB base station is sent to the second node by the third node. The method further comprises receiving an NG removal response message from the third node, wherein the NG removal response message comprises the name information of the second node, wherein the name information of the second node is sent by the second node to the third node. According to an embodiment of the present disclosure, the context of the NG interface that the WAB base station suggests to release includes at least one of a presence attribute being a selectable information element IE, a frequently changing information element IE, a supported timing advance TA list, a default paging discontinuous reception DRX, UE reservation information, a narrowband Internet of things NB-IoT default paging discontinuous reception DRX, and wherein the context of the NG interface that the WAB base station does not suggest to release includes at least one of all information element IEs in the context of the NG interface, a presence attribute being a mandatory information element IE, a less frequently changing information element IE, a global RAN node identification, a RAN node name, an extended RAN node name. According to an embodiment of the present disclosure, the second message further comprises at least one of information related to a context of the NG interface that the second node agrees to release, information related to a context of the NG interface that the second node does not agree to release. Acco