Patent ID: 6980814
Filing Date: 2005-12-27
Classification: H04W

Abstract:
1. A mobile communication system including a plurality of base stations positioned within a communication area each for emitting a radio wave inherent thereto and a mobile station moving within the communication area and communicating with the respectives of the base stations via the transmitted radio waves, said system comprising: location correlation data group storing means for previously storing a location correlation data group including correlation data respectively representing correlation situation of a plurality of arriving radio waves produced by the transmitted radio waves at respectives of a plurality of sampling locations within the communication area as location correlation data respectively corresponding to the locations; current correlation data calculating means for receiving the arriving radio waves at a current position of the mobile station and calculating current correlation data respectively representing the correlation situations among the arriving radio waves for the respective mobile stations; and current position determining means for comparing the location correlation data in the location correlation data group and the current correlation data and determining the current position of the mobile station in accordance with a result of the comparison thereby to generate information of the determined current position, wherein the correlation data representing the correlating situation is at least one of a multipath occurrence rate, a delay time period between the multipaths and an electric field intensity of each of the multipaths.