Patent ID: 7864108
Filing Date: 2011-01-04
Classification: G01S

Abstract:
1. A present position estimation method that estimates a present position of a mobile terminal, the mobile terminal including a positioning section that receives a satellite signal from a positioning satellite and locates the present position, and a wireless communication section that performs wireless communication with base stations installed in various locations while performing a hand-over process, the method comprising: storing a final located position that has been located by the positioning section and a combination of base stations that have performed the wireless communication with the wireless communication section when the positioning section finishes positioning; comparing a combination of base stations that currently perform wireless communication with the wireless communication section with the stored combination of the base stations when the positioning section again starts positioning; and estimating the stored final located position to be the present position of the mobile terminal when it has been determined that the combination of the base stations that currently perform the wireless communication with the wireless communication section coincides with the stored combination of the base stations.