Method and apparatus for adjusting HARQ timing

1. A method of adjusting hybrid automatic repeat request (HARQ) timing by a base station, the method comprising:

adjusting HARQ timing of a mobile station according to a system environment;

transmitting a radio resource allocation signal including the adjusted HARQ timing information; and

receiving from the mobile station a HARQ signal transmitted according to the HARQ timing information,

wherein the radio resource allocation signal includes downlink radio resource allocation information, and the HARQ signal includes a HARQ feedback signal with respect to a downlink HARQ data packet,

wherein the HARQ timing information includes a transmission timing offset, and the HARQ feedback signal is transmitted in a frame having a frame index changed by the transmission timing offset from a frame index of a transmission time before being adjusted.

2. The method of claim 1 , further comprising

measuring, by the base station, the system environment.

3. The method of claim 1 , further comprising

receiving information regarding the system environment measured by the mobile station from the mobile station.

4. A method of adjusting hybrid automatic repeat request (HARQ) timing by a mobile station, the method comprising:

receiving from a base station a radio resource allocation signal including HARQ timing information that is adjusted according to a system environment;

adjusting HARQ timing according to the HARQ timing information; and

transmitting to the base station a HARQ signal according to the adjusted HARQ timing,

wherein the radio resource allocation signal includes downlink radio resource allocation information, and the HARQ signal includes a HARQ feedback signal with respect to a downlink HARQ data packet,

wherein the HARQ timing information includes a transmission timing offset, and the mobile station transmits the HARQ feedback signal in a frame having a frame index that is changed by the transmission timing offset from a frame index of a transmission time before being adjusted.

5. The method of claim 4 , wherein the system environment is measured by the base station.

6. The method of claim 4 , further comprising:

measuring the system environment; and

transmitting information regarding the system information to the base station.

7. An apparatus for adjusting hybrid automatic repeat request (HARQ) timing, the apparatus comprising:

a HARQ timing determiner configured to adjust HARQ timing of a mobile station;

a transmitter configured to transmit a downlink radio resource allocation signal including the adjusted HARQ timing information and a downlink HARQ data packet to the mobile station; and

a receiver configured to receive a HARQ feedback signal with respect to the downlink data packet that is transmitted according to the adjusted HARQ timing information from the mobile station,

wherein the adjusted HARQ timing information includes a transmission timing offset, and the HARQ feedback signal is transmitted in a frame having a frame index changed by the transmission timing offset from a frame index of a transmission time before being adjusted.

8. An apparatus for adjusting hybrid automatic repeat request (HARQ) timing, the apparatus comprising:

a receiver configured to receive a downlink radio resource allocation signal including HARQ timing information adjusted according to a system environment, and a downlink HARQ data packet from a base station;

a HARQ timing adjuster configured to adjust HARQ timing according to the HARQ timing information; and

a transmitter configured to transmit to the base station a HARQ feedback signal with respect to the downlink HARQ data packet according to the HARQ timing,

wherein the adjusted HARQ timing information includes a transmission timing offset, and the HARQ feedback signal is transmitted in a frame having a frame index changed by the transmission timing offset from a frame index of a transmission time before being adjusted.