Patent ID: 9143294
Filing Date: 2015-09-22
Classification: H04B,H04L

Abstract:
1. A method of using a component carrier by a relay station (RS) in a multi-carrier system, the method comprising: receiving, through a control channel of a first downlink component carrier from a base station (BS), configuration information indicating whether to allocate a second downlink component carrier either to a backhaul downlink or to an access downlink; determining whether to allocate the second downlink component carrier either to the backhaul downlink from the BS toward the RS or to the access downlink the RS toward an RS user equipment (UE), according to the configuration information, in turn according to time division multiplexing (TDM) while the first downlink component carrier is dedicated to the backhaul downlink from the BS toward the RS; determining whether to allocate an uplink component carrier either to a backhaul uplink from the RS toward the BS or to an access uplink from the RS UE toward the RS in turn according to the TDM, wherein when a downlink data is received on the backhaul downlink of the second downlink component carrier from the BS, the uplink component carrier is determined to be allocated to the backhaul uplink thereby transmitting an acknowledgement (ACK)/negative acknowledgement (NACK) for the received downlink data to the BS, wherein when the downlink data is transmitted on the access downlink of the second downlink component carrier to the RS UE, the uplink component carrier is determined to be allocated to the access uplink thereby receiving an ACK/NACK for the transmitted downlink data, and wherein the first downlink component carrier, the second downlink component carrier and the uplink component carrier are different from each other in frequency bands.