Patent ID: 8050235

Claim:
A communication method of a Base Station (BS) in a wireless communication system using a multihop relay scheme, the method comprising: allocating an uplink channel to a Mobile Station (MS) in a resource allocation message sent by the BS; obtaining allocated channel identity information of the MS by capturing the resource allocation message, at least one Relay Station (RS); measuring an RS-MS signaling level at each of the at least one RS from an uplink signal received at each of the at least one RS from the MS in the allocated uplink channel, based on information of the allocated uplink channel that is acquired from the BS, wherein the at least one RS and the MS are not associated; measuring a BS-MS signaling level at the BS using the uplink signal from the MS, the uplink signal being received in the allocated uplink channel; receiving, at the BS, RS-MS signaling level information reported by the at least one RS; and selecting an RS for providing transparent relay services to the MS using the multihop relay scheme, wherein the selected RS corresponds to a strong signaling level of both the BS-MS signaling level and the RS-MS signaling level; wherein the wireless communication system comprises an Orthogonal Frequency Division Multiplexing (OFDM)/Orthogonal Frequency Division Multiple Access (OFDMA) system.