Patent ID: 7515559

Claim:
A subscriber station (SS) cell reselection method in a communication system using at least one of an Orthogonal Frequency Division Multiplexing (OFDM) scheme and an Orthogonal Frequency Division Multiple Access (OFDMA) scheme, comprising the steps of: a) receiving neighbor base station (BS) information on a plurality of neighbor BSs associated with a plurality of cells adjacent to a cell and uplink-associated information needed for transmitting data from the SS to a first BS, from the first BS for controlling the cell in which the SS is currently located; b) transmitting a first request as a request of synchronization information needed for synchronizing the SS and the first BS, to the first BS; c) monitoring the plurality of neighbor BSs according to the neighbor BS information; and d) performing a cell reselection with a second BS, which is one of the plurality of neighbor BSs according to the monitored result, wherein performing the cell reselection with the second BS further comprises a step d1) of transmitting, to the second BS, a second request as a request for synchronization information needed for synchronizing the SS and second BS the.