METHOD OF PERFORMING HARQ IN WIRELESS COMMUNICATION SYSTEM

• US 20110013613A1
• Filed: 03/17/2009
• Published: 01/20/2011
• Est. Priority Date: 03/17/2008
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Sung, Doo Hyun, Cho, Han Gyu, Moon, Sung Ho
• Granted Patent: US 8,848,678 B2
• Time in Patent Office: Days
• US Class Current: 370/338
• CPC Class Codes: H04L 1/1812 Hybrid protocols; Hybrid automatic repeat request [HARQ]
• CPC Class Codes: H04L 1/1887 Scheduling and prioritising arrangements

Abstract

A method of performing hybrid automatic repeat request (HARQ) in a wireless communication system is provided. The method includes receiving a system configuration signal, the system configuration signal comprising frame configuration information and HARQ delay information, receiving a downlink (DL) signal in a DL subframe and transmitting an acknowledgement (ACK)/not-acknowledgement (NACK) signal for the DL signal in a UL subframe.

Claims

1. A method of performing hybrid automatic repeat request (HARQ) in a wireless communication system, carried in a mobile station (MS), the method comprising:

receiving a system configuration signal, the system configuration signal comprising frame configuration information and HARQ delay information, wherein the frame configuration information comprises a ratio of a plurality of downlink (DL) subframes to at least one uplink (UL) subframe in a frame, the DL subframes and the at least one UL subframe are allocated at different time in the frame, and

the HARQ delay information comprises association between a UL subframe and at least one DL subframe for HARQ, wherein every UL subframe in the frame is associated with at least one DL subframe;

receiving a DL signal in a DL subframe; and

transmitting an acknowledgement (ACK)/not-acknowledgement (NACK) signal for the DL signal in a UL subframe which is associated with the DL subframe in which the DL signal is received.

2. The method of claim 1, wherein the system configuration signal is received as a part of system information.

3. The method of claim 2, wherein the system information is received through a superframe header.

4. The method of claim 1, wherein the system configuration signal further comprises UL-MAP information, the UL-MAP information comprising information about a UL subframe associated with UL-MAP included in a DL subframe.

5. The method of claim 1, wherein the frame comprises 8 subframes and at least one subframe in the frame is a UL subframe.

6. The method of claim 5, wherein each subframe in the frame comprises a plurality of orthogonal frequency division multiplexing (OFDM) symbols.

7. The method of claim 6, wherein the number of the OFDM symbols of at least one subframe in the frame is different the number of the OFDM symbols of the other subframes in the frame.

8. An apparatus for a wireless communication, the apparatus comprising:

a radio frequency (RF) unit configured to receive and transmit a radio signal; and

a processor coupled with the RF unit and configured to;

receive a system configuration signal, the system configuration signal comprising frame configuration information and HARQ delay information, wherein the frame configuration information comprises a ratio of a plurality of DL subframes to at least one UL subframe in a frame, the DL subframes and the at least on UL subframe are allocated at different time in the frame, and

the HARQ delay information comprises association between a UL subframe and at least one DL subframe for HARQ, wherein every UL subframe in the frame is associated with at least one DL subframe;

receive a DL signal in a DL subframe; and

transmit an ACK/NACK signal for the DL signal in a UL subframe which is associated with the DL subframe in which the DL signal is received.