Relay station data transmission method

• US 9,066,365 B2
• Filed: 11/02/2010
• Issued: 06/23/2015
• Est. Priority Date: 11/16/2009
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation), Soongsil University Research Consortium Techno-Park
• Original Assignee: LG Electronics, Inc. (LG Corporation), Soongsil University Research-Consortium Techno-Park Office of Research & University-Industry Cooperation
• Inventors: Kim, Hak Seong, Shin, Yo An, Lee, Ki Ho, Kim, Ki Jun, Kim, San Hae
• Primary Examiner(s): Urban, Edward
• Assistant Examiner(s): Rachedine, Mohammed
• Application Number:
  US13/510,280
• Publication Number:
  US 20120238202A1
• Time in Patent Office: 1,694 Days
• US Class Current: 1/1
• CPC Class Codes: H04W 72/20 Control channels or signalling for resource management
• CPC Class Codes: H04W 72/542 using measured or perceived quality
• CPC Class Codes: H04W 84/047 using dedicated repeater stations

Abstract

A method of a relay node transmitting data is provided. The method includes receiving scheduling information about a backhaul link and data from a base station; receiving channel information about an access link from relay node user equipment; performing scheduling on the access link based on the scheduling information about the backhaul link and the channel information about the access link; and relaying the data to the relay node user equipment according to a result of the scheduling. The backhaul link means a link between the base station and the relay node, and the access link means a link between the relay node and the relay node user equipment.

Claims

1. A method of a relay node transmitting data, the method comprising:

transmitting, by a Relay Node (RN) via a second time zone, an access link channel measurement reference signal to a relay node user equipment;

receiving, by the RN via the second time zone, access link channel information about the access link channel measurement reference signal from the relay node user equipment;

generating, by the RN via a first time zone, scheduling information about an access link based on the access link channel information;

receiving, by the RN via the first time zone, a backhaul link channel measurement reference signal from a base station;

transmitting, by the RN via the first time zone, backhaul link channel information, obtained by measuring the backhaul link channel measurement reference signal, and scheduling information about the access link to the base station;

receiving, by the RN via the first time zone, data to be relayed to the relay node user equipment from the base station; and

transmitting, by the RN via the second time zone, the data to the relay node user equipment based on the scheduling information about the access link.

2. The method of claim 1, wherein a radio resource zone where the relay node is able to communicate with the base station and a radio resource zone where the relay node is able to communicate with the relay node user equipment overlap with a radio resource zone where the base station is able to communicate with the macro user equipment.

3. A method of a relay node transmitting data, the method comprising:

receiving, by a Relay Node (RN) via a first time zone, a backhaul link channel measurement reference signal from a base station;

transmitting, by the RN via the first time zone, backhaul link channel information about backhaul link channel measurement reference signal to the base station;

transmitting, by the RN via a second time zone, an access link channel measurement reference signal to a relay node user equipment;

receiving, by the RN via the first time zone, macro scheduling information about a link between the base station and a macro user equipment, connected to the base station, and data to be relayed to the relay node user equipment from the base station;

receiving, by the RN via the second time zone, access link channel information about the access link channel measurement reference signal from the relay node user equipment;

performing, by the RN via the first time zone, scheduling on an access link based on the access link channel information and the macro scheduling information; and

transmitting, by the RN via the second time zone, the data to the relay node user equipment according to a result of the scheduling on the access link.

4. The method of claim 3, wherein a radio resource zone where the relay node is able to communicate with the base station and a radio resource zone where the relay node is able to communicate with the relay node user equipment overlap with a radio resource zone where the base station is able to communicate with the macro user equipment.

5. The method of claim 3, wherein a radio resource zone where the relay node is able to transmit a signal to the relay node user equipment is identical with a radio resource zone where the base station is able to transmit a signal to the macro user equipment.