Patent ID: 8605641
Filing Date: 2013-12-10
Classification: H04B,H04W

Abstract:
1. A method of providing a multicast and broadcast service (MBS) in a multi-hop relay system, the method comprising: transmitting a first message including allocation information of a first MBS zone, which is allocated in a downlink frame for a base station (BS) to provide a first MBS by the base station (BS) to a relay station (RS); receiving a second message including information as to whether a second MBS zone in a downlink frame for the relay station corresponding to the first MBS zone is used and delay time information for providing a second MBS simultaneously with the first MBS of the base station from the relay station in response to the allocation information; and providing the first MBS via the first MBS zone which is allocated in the downlink frame for the BS based on the information included in the second message, wherein the downlink frame for the base station has a different zone allocation from a zone allocation of the downlink frame for the relay station, wherein the downlink frame for the relay station includes a downlink transmit zone, a downlink receive zone, and a gap, and the downlink frame for the base station includes a downlink access zone and a downlink relay zone, wherein the first MBS zone and the second MBS zone are allocated to the same time and same frequency region in each of the downlink frames for the base station and the relay station, and wherein the first MBS is provided simultaneously with the second MBS to each mobile station connected to the base station and the relay station.