Patent ID: 8599782
Filing Date: 2013-12-03
Classification: H04B,H04L,H04W

Abstract:
1. A method for allocating subframes in a wireless communication system that performs communication by using a radio frame including a plurality of subframes, the method comprising: receiving an uplink grant in a backhaul downlink subframe #n (n being a integer number), wherein the uplink grant comprises an offset value; transmitting uplink data based on the uplink grant in a backhaul uplink subframe #(n+4); and determining a backhaul downlink subframe in which an acknowledgement/not-acknowledgement (ACK/NACK) for the uplink data is to be received, wherein when a backhaul downlink subframe #(n+8) is a limitation subframe and the offset value indicates one subframe, the determined backhaul downlink subframe is a subframe shifted from the backhaul downlink subframe #(n+8) by the offset value and the ACK/NACK is received in the determined backhaul downlink subframe, and wherein when the backhaul downlink subframe #(n+8) is the limitation subframe and the offset value indicates more than one subframe, the determined backhaul downlink subframe is the backhaul downlink subframe #(n+8) and the backhaul downlink subframe #(n+8) is punctured, and wherein the limitation subframe is a subframe in which essential information for a relay user equipment is transmitted.