Patent ID: 7813320

Claim:
A handover method in a communication system, the method comprising: broadcasting, by a serving Base Station (BS), neighbor BS information including BS identifiers and preamble indices of a plurality of neighbor BSs; receiving, by a Mobile Station (MS), the neighbor BS information from the serving BS; transmitting, by the MS, a handover request message to the serving BS, the handover request message including a first BS identifier and a first preamble index of a neighbor BS among the plurality of neighbor BSs; receiving, by the serving BS, the handover request message from the MS; transmitting, by the serving BS, a handover response message to the MS, the handover response message including a second BS identifier and a second preamble index of a recommended neighbor BS; receiving, by the MS, the handover response message from the serving BS; transmitting, by the MS, a handover indication message to the serving BS, the handover indication message including target BS information; and receiving, by the serving BS, the handover indication message from the MS, wherein the target BS information includes a third BS identifier and a third preamble index of a target BS.