Repeater operation method and apparatus in wireless communication system

Patent metadata

Field	Value
Publication number	US-2016204847-A1
Application number	US-201414912572-A
Country	US
Kind code	A1
Filing date	Aug 18, 2014
Priority date	Aug 18, 2013
Publication date	Jul 14, 2016
Grant date	—

Abstract

The present invention relates to a wireless communication system. More specifically, a repeater operation method and apparatus are disclosed. A method for supporting a repeater by a base station in a wireless communication system according to an embodiment of the present invention may include the steps of: determining whether a relay communication about a target user equipment (UE) is required; and transmitting the repeater activation message to one or more repeater candidates. The activation message may include one or more parameters among an activation cycle, location, or a signal strength threshold for the one or more repeater candidates. A repeater satisfying the condition given by the one or more parameters from among the one or more repeater candidates can be activated as a repeater for the target UE.

First claim

What is claimed is:

1 . A method of supporting a relay by a base station in a wireless communication system, the method comprising the steps of:
determining whether relay communication for a target user equipment (UE) is needed; and transmitting a relay activation message to one or more relay candidates, wherein the activation message comprises at least one parameter selected from the group consisting of an activation period, a location, and a threshold of signal strength for the one or more relay candidates and wherein among the one or more relay candidates, a relay satisfying conditions given by the at least one parameter is activated as a relay for the target UE.

2 . The method of claim 1 , wherein whether the relay communication is needed is determined based on at least one selected from the group consisting of a request from the target UE, status information of the target UE, and situation information of a surrounding cell.

3 . The method of claim 2 , wherein the request from the target UE comprises at least one selected from the group consisting of information indicating a degree of necessity for the relay communication, location information of the target UE, and information indicating the amount of resources required by the target UE.

4 . The method of claim 2 , wherein the status information of the target UE comprises at least one of information on a distance with respect to the target UE and information on a link quality with respect to the target UE.

5 . The method of claim 2 , wherein the situation information of the surrounding cell comprises at least one of load information of the surrounding cell and information on whether the surrounding cell is activated and wherein the situation information of the surrounding cell is provided by at least one selected from the group consisting of one or more different UEs except the target UE, a different base station, and a core network.

6 . The method of claim 1 , wherein the activation message corresponds to either a dedicated message transmitted to each of the one or more relay candidates or a broadcast signal transmitted to the one or more relay candidates.

7 . The method of claim 1 , wherein the relay corresponds to either a mobile relay or a UE-relay.

8 . A method of operating a relay in a wireless communication system, the method comprising the steps of:
receiving a relay activation message comprising at least one parameter selected from the group consisting of an activation period, a location, and a threshold of signal strength from a base station and performing activation as a relay for a target user equipment (UE), if conditions given by the at least one parameter are satisfied.

9 . The method of claim 8 , the step of performing the activation comprising the step of initiating relay communication for the target UE according to the activation message from the base station.

10 . The method of claim 8 , the step of performing the activation comprising the step of transmitting a signal for announcing relay capability of the relay around.

11 . The method of claim 8 , the step of performing the activation comprising the step of monitoring a relay request from a UE around the relay.

12 . The method of claim 8 , further comprising the step of transmitting a signaling with respect to the relay, wherein the signaling comprises at least one selected from the group consisting of load information of the relay, location information of the relay, and static information on a relay requesting UE around the relay.

13 . The method of claim 8 , wherein the relay corresponds to either a mobile relay or a UE-relay.

14 . A base station apparatus configured to support a relay in a wireless communication system, comprising:
a transceiver module; and a processor, wherein the processor is configured to determine whether relay communication for a target user equipment (UE) is needed and to transmit a relay activation message to one or more relay candidates using the transceiver module, wherein the activation message comprises at least one parameter selected from the group consisting of an activation period, a location, and a threshold of signal strength for the one or more relay candidates, and wherein among the one or more relay candidates, a relay satisfying conditions given by the at least one parameter is activated as a relay for the target UE.

15 . A relay apparatus configured to operate in a wireless communication system, comprising:
a transceiver module; and a processor, wherein the processor is configured to receive a relay activation message comprising at least one parameter selected from the group consisting of an activation period, a location, and a threshold of signal strength from a base station using the transceiver module and wherein if conditions given by the at least one parameter are satisfied, the processor is configured to perform activation as a relay for a target user equipment (UE).

Assignees

• Lg Electronics Inc

Inventors

• Ryu Jinsook
• Kim Laeyoung
• Kim Hyunsook
• Kim Jaehyun
• Kim Taehun
• Kim Taehyeon

Classifications

• H04W72/23

  in the downlink direction of a wireless link, i.e. towards a terminal · CPC title

• H04W72/51

  based on terminal or device properties · CPC title

• H04W64/003

  locating network equipment · CPC title

• H04B7/15507 Primary

  Relay station based processing for cell extension or control of coverage area, (network planning with network coordinated processing with regard to cell extension H04W16/26; network topologies using dedicated repeater stations H04W84/047; terminal devices adapted for relaying to or from an other terminal H04W88/04) · CPC title

• H04W84/047

  using dedicated repeater stations · CPC title