Method and Apparatus for Performing Handover Procedure in Wireless Communication System Including Mobile Relay Node

• US 20130322325A1
• Filed: 03/23/2012
• Published: 12/05/2013
• Est. Priority Date: 03/25/2011
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Hahn, Gene Beck, Park, Kyung Min, Xu, Jian
• Granted Patent: US 9,426,700 B2
• Time in Patent Office: Days
• US Class Current: 370/315
• CPC Class Codes: H04W 36/0009 for a plurality of users or terminals, e.g. group communication or moving wireless networks user group management H04W4/08; processing of subscriber group data H04W8/186
• CPC Class Codes: H04W 36/0058 Transmission of hand-off measurement information, e.g. measurement reports
• CPC Class Codes: H04W 84/005 Moving wireless networks

Abstract

A method and apparatus for performing a handover procedure in a wireless communication system including a mobile relay node is provided. A target evolved NodeB (eNB) receives a handover request message containing a list of a plurality of user equipments (UEs) on the mobile relay node or a group handover indication. The target eNB performs an admission control for the plurality of UEs; and transmits a handover request acknowledge message containing a list of admitted UEs for handover among the plurality of UEs.

Claims

1. A method for performing a handover procedure, by a target evolved NodeB (eNB), in a wireless communication system including a mobile relay node, the method comprising:

receiving a handover request message containing a list of a plurality of user equipments (UEs) on the mobile relay node;

performing an admission control for the plurality of UEs; and

transmitting a handover request acknowledge message containing a list of admitted UEs for handover among the plurality of UEs.

2. The method of claim 1, wherein:

the handover request message is received from the mobile relay node, and

the handover request acknowledge message is transmitted to the mobile relay node.

3. The method of claim 2, wherein the handover request message is received after the mobile relay node receives measurement reports from the plurality of UEs.

4. The method of claim 2, wherein the mobile relay node does not move.

5. The method of claim 1, wherein the handover request message contains information on the plurality of UEs.

6. The method of claim 1, wherein the plurality of UEs is grouped based on a predefined time period among multiple UEs.

7. The method of claim 1, wherein:

the handover request message is received from a serving donor eNB (DeNB), and

the handover request acknowledge message is transmitted to the serving DeNB.

8. The method of claim 7, wherein the handover request message is received after the serving DeNB receives measurement report from the mobile relay node.

9. The method of claim 1, wherein:

the handover request message is received from a target mobile management entity (MME), and

the handover request acknowledge message is transmitted to the target MME.

10. The method of claim 9, wherein the handover request message is received after a serving DeNB transmits a handover required message containing the list of a plurality of UEs to a source MME.

11. A method for performing a handover procedure, by a mobile relay node, in a wireless communication system including the mobile relay node, the method comprising:

receiving measurement reports from a plurality of user equipments (UEs) on the mobile relay node;

transmitting a handover request message to a target evolved NodeB (eNB), the handover request message containing a list of the plurality of UEs; and

receiving a handover request acknowledge message from the target eNB, the handover request acknowledge message containing a list of admitted UEs for handover among the plurality of UEs.

12. The method of claim 11, wherein the mobile relay node does not move.

13. The method of claim 11, wherein the handover request message contains information on the plurality of UEs.

14. The method of claim 11, wherein the plurality of UEs is grouped based on a predefined time period among multiple UEs.

15. A method for performing a handover procedure, by a target evolved NodeB (eNB), in a wireless communication system including a mobile relay node, the method comprising:

receiving a handover request message containing a group handover indication;

performing an admission control for a plurality of user equipments (UEs) on the mobile relay node; and

transmitting a handover request acknowledge message containing a list of admitted UEs for handover among the plurality of UEs.