Method for performing a HARQ process and apparatus using same

A method of performing a hybrid automatic repeat request (HARQ) process operation using a frequency division duplex (FDD) frame structure at a relay node (RN) in a wireless communication system, the method comprising:

• receiving information regarding a number of HARQ processes between a base station (BS) and the RN from the BS,
• wherein the number of the HARQ processes depends on at least one subframe configured for transmission between the BS and the RN,
• wherein each of the HARQ processes is assigned to at least one subframe configured for RN-to-BS transmission according to the number of the HARQ processes, and
• wherein the at least one subframe to which each of the HARQ processes is assigned must be a multicast broadcast single frequency network (MBSFN) subframe.

A base station (BS) of performing a hybrid automatic repeat request (HARQ) process operation using a frequency division duplex (FDD) frame structure in a wireless communication system, the BS comprising:

• a transmitter configured to transmit information regarding a number of HARQ processes between the BS and a relay node (RN) to the RN,
• wherein the number of the HARQ processes depends on at least one subframe configured for transmission between the BS and the RN,
• wherein each of the HARQ processes is assigned to at least one subframe configured for RN-to-BS transmission according to the number of the HARQ processes, and
• wherein the at least one subframe to which each of the HARQ processes is assigned must be a multicast broadcast single frequency network (MBSFN) subframe.

A relay node (RN) of performing a hybrid automatic repeat request (HARQ) process operation using a frequency division duplex (FDD) frame structure at a relay node (RN) in a wireless communication system, the RN comprising:

• a receiver configured to receive information regarding a number of HARQ processes between a base station (BS) and the RN from the BS;
• a processor configured to acquire the number of the HARQ processes,
• wherein the number of the HARQ processes depends on at least one subframe configured for transmission between the BS and the RN,
• wherein each of the HARQ processes is assigned to at least one subframe configured for RN-to-BS transmission according to the number of the HARQ processes, and
• wherein the at least one subframe to which each of the HARQ processes is assigned must be a multicast broadcast single frequency network (MBSFN) subframe.