Patent ID: 8743826
Filing Date: 2014-06-03
Classification: H04W

Abstract:
1. A method for scanning neighbor base stations in a time synchronous wireless communication system, the method implemented by a mobile station comprising: receiving a first unique preamble index from a base station, wherein the first unique preamble index is transmitted by the base station over one of a plurality of subcarrier subsets from the overall available subcarriers used for transmission of a first frame; receiving a second unique preamble index from a neighbor base station, wherein the second unique preamble index is transmitted by the neighbor base station over one of the plurality of subcarrier subsets available during transmission of a second frame, wherein the first frame and the second frame are transmitted by the base station and the neighbor base station during a same synchronous time frame; when the first and the second unique preamble indices are received at the same subcarrier subset, determining a signal quality measurement for each of the base station and the neighbor base station based at least in part on the first and second unique preamble indices respectively; when the first and the second unique preamble indices are not received at the same subcarrier subset, decoding the two subcarrier subsets for the first and the second unique preamble indices; and initiating handover to the neighbor base station when the signal quality measurement for the neighbor base station exceeds the signal quality measurement for the base station.