METHOD OF RECEIVING MESSAGE IN COMMUNICATION SYSTEM USING RELAY PROCESS BEING LIMITED TO WIRELESS INTERFACE AND APPARATUS OF THE SAME

• US 20110194484A1
• Filed: 02/11/2011
• Published: 08/11/2011
• Est. Priority Date: 02/11/2010
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Park, Sung Jun, Yi, Seung June, Jung, Sung Hoon, Chun, Sung Duck, Lee, Young Dae
• Granted Patent: US 8,451,769 B2
• Time in Patent Office: Days
• US Class Current: 370/315
• CPC Class Codes: H04B 7/155 Ground-based stations H04B7/204 takes precedence

Abstract

A method of receiving a message by a relay node in a mobile communication system is disclosed. The present invention includes receiving control information including a first group identifier on a backhaul subframe, and receiving the message based on the control information if the received first group identifier indicates the relay node, wherein the message includes a second group identifier, the second group identifier being corresponded to the first group identifier.

Claims

1. A method of receiving a message by a relay node in a mobile communication system, the method comprising:

receiving control information including a first group identifier on a backhaul subframe; and

receiving the message based on the control information if the received first group identifier indicates the relay node,

wherein the message includes a second group identifier, the second group identifier being corresponded to the first group identifier.

2. The method of claim 1, wherein the first group identifier is assigned by a base station or a mobility management entity (MME).

3. The method of claim 2, wherein the second group identifier is assigned by the base station or the MME.

4. The method of claim 3, wherein the base station or the MME assigns a plurality of second group identifiers including the second group identifier to the relay node.

5. The method of claim 4, wherein the relay node belongs to a plurality of relay node group, and each of the plurality of second group identifiers corresponds to each of the plurality of relay node group.

6. The method of claim 1, wherein the backhaul subframe is a MBSFN (Multicast/Broadcast over a Single Frequency Network) subframe.

7. The method of claim 2, wherein the message is retransmitted by the base station or the MME according to a hybrid automatic repeat request (HARQ) operation.

8. The method of claim 7, wherein a feedback of the message is not transmitted.

9. The method of claim 1, wherein the control information is received through a R-PDCCH (Relay-Physical Downlink Control Channel), and the message is received through a R-PDSCH (Relay-Physical Downlink Shared Channel).

10. The method of claim 1, wherein the message is one of a paging message, a MME (mobility management entity) configuration update message, an overload start message, an overload stop message, a write-replace warning request message and a kill request message over an S1 interface.

11. The method of claim 1, wherein the message is one of a load information message, an error indication message and a base station configuration update message over an X2 interface.

12. A method of transmitting a message by a network node in a mobile communication system, the method comprising:

transmitting, to a relay node, control information including a first group identifier indicating the relay node on a backhaul subframe; and

transmitting the message to the relay node,

wherein the message includes a second group identifier, the second group identifier being corresponded to the first group identifier.

13. The method of claim 12, further comprising:

assigning the first group identifier to the relay node.

14. The method of claim 13, further comprising:

assigning the second group identifier to the relay node.

15. The method of claim 13, further comprising:

assigning a plurality of second group identifiers including the second group identifier to the relay node.

16. The method of claim 15, wherein the relay node belongs to a plurality of relay node group, and each of the plurality of second group identifiers corresponds to each of the plurality of relay node group.

17. The method of claim 12, wherein the backhaul subframe is a MBSFN (Multicast/Broadcast over a Single Frequency Network) subframe.

18. The method of claim 13, further comprising:

retransmitting the message to the relay node according to a hybrid automatic repeat request (HARQ) operation.

19. The method of claim 18, wherein a feedback of the message is not transmitted by the relay node.

20. The method of claim 12, wherein the control information is transmitted through a R-PDCCH (Relay-Physical Downlink Control Channel), and the message is transmitted through a R-PDSCH (Relay-Physical Downlink Shared Channel).

21. The method of claim 12, wherein the message is one of a paging message, a MME (mobility management entity) configuration update message, an overload start message, an overload stop message, a write-replace warning request message and a kill request message over an S1 interface.

22. The method of claim 12, wherein the message is one of a load information message, an error indication message and a base station configuration update message over an X2 interface.