POSITION ESTIMATION SYSTEM, RADIO COMMUNICATION DEVICE, PROGRAM, POSITION ESTIMATION METHOD, AND INFORMATION SERVER

摘要

A radio communication device includes: a storage unit which stores base station position information correlated with a base station identifier; a reception unit for receiving a radio signal containing an identifier of the base station transmitted from the base station; and a position estimation unit which estimates the position of the radio communication device according to the radio signal and the position information stored in the storage unit. In the storage unit, position information on a first base station within a first range is expressed by a first discrete value in which the position of the first base station is quantized by a first quantization quantity within the first range as a quantization range while position information on a second base station within a second range narrower than the first range and having a higher density than the first range uses the second range as a quantization range and is expressed by a second discrete value in which the position of the second base station is quantized by a second quantization quantity smaller than the first quantization range.