Method and system for mobile relay enablement

• US 9,258,745 B2
• Filed: 11/09/2012
• Issued: 02/09/2016
• Est. Priority Date: 11/11/2011
• Status: Active Grant

• Current Assignee: Malikie Innovations Limited (Key Patent Innovations Limited)
• Original Assignee: Blackberry Limited
• Inventors: Yu, Yi, Cai, Zhijun, Song, Yi, Blankenship, Yufei Wu, Bontu, Chandra Sekhar
• Primary Examiner(s): Cumming, William D
• Application Number:
  US13/673,414
• Publication Number:
  US 20140135007A1
• Time in Patent Office: 1,187 Days
• Field of Search: 455/436, 370/331
• US Class Current: 1/1
• CPC Class Codes: H04W 24/02 Arrangements for optimising operational condition
• CPC Class Codes: H04W 36/0005 Control or signalling for completing the hand-off
• CPC Class Codes: H04W 84/005 Moving wireless networks
• CPC Class Codes: H04W 84/047 using dedicated repeater stations

Abstract

A method and network element for managing a relay node that is moving relative to a source network node, the method sending a handover request from a source network node to a target network node to prepare the handover at the target network node; sending a handover command from the source network node to the relay node without waiting for an acknowledgement of the handover request from the target network node; and detaching the relay node from the source network node.

Claims

1. A method for managing a relay node that is moving relative to a source network node, the method comprising:

storing information of a target network node at the source network node;

receiving, at the source network node, a measurement report from the relay node;

sending a handover request from a source network node to the target network node to prepare the handover at the target network node;

sending a handover command and the stored information from the source network node to the relay node without waiting for an acknowledgement of the handover request from the target network node; and

detaching the relay node from the source network node.

2. The method of claim 1, wherein the stored information allows the relay node to access the target network node.

3. The method of claim 1 wherein the information of the target network node includes radio resource information.

4. The method of claim 3 wherein the radio resource information further includes random access channel information.

5. The method of claim 1 wherein the information of the target network node includes a security configuration.

6. The method of claim 1 wherein the information of the target network node includes an ID allocated to the relay node by the target network node.

7. A source network node configured for managing a relay node that is moving relative to the source network node, the source network node comprising:

a processor; and

a communications subsystem,

wherein the processor and communications subsystem cooperate to;

store information of a target network node;

receive a measurement report from the relay node;

send a handover request from the source network node to the target network node to prepare the handover at the target network node;

send a handover command and the stored information from the source network node to the relay node without waiting for an acknowledgement of the handover request from the target network node;

detach the relay node from the source network node.

8. The source network node of claim 7, wherein the stored information allows the relay node to access the target network node.

9. The source network node of claim 7 wherein the information of the target network node includes radio resource information.

10. The source network node of claim 9 wherein the radio resource information further includes random access channel information.

11. The source network node of claim 7 wherein the information of the target network node includes a security configuration.

12. The source network node of claim 7 wherein the information of the target network node includes an ID allocated to the relay node by the target network node.