Mobile communication terminal and location system selection method

摘要

A mobile communication terminal (1) includes a mobile communication unit (13) that receives broadcast signals from base stations (2a, 2b, . . . ) through mobile communication, a wireless LAN positioning unit (12) that performs positioning calculation using wireless LAN communication, a GPS positioning unit (11) that performs positioning calculation through GPS positioning, a comparison unit (14) that compares the number of base stations from which broadcast signals are receivable by the mobile communication unit (13) with a predetermined number and determines whether the number of base stations is large or small, and a positioning system selection unit (15) that controls the wireless LAN positioning unit (12) to perform positioning calculation when the number of base stations is determined to be large and controls the GPS positioning unit (11) to perform positioning calculation when the number of base stations is determined to be small.

主权项

1. A mobile communication terminal configured to be capable of positioning calculations by a plurality of positioning calculation systems, comprising:
a mobile communication means for receiving signals from a plurality of base stations through a mobile communication, the plurality of base stations being different from wireless LAN access points constituting a wireless LAN; a first positioning calculation means for performing a positioning calculation using at least one wireless LAN positioning calculation based on signals from the wireless LAN access points;a second positioning calculation means for performing a positioning calculation through at least one GPS positioning;
a comparison means for comparing a number of base stations from which the signals are received by the mobile communication means with a predetermined number, and determining whether the number of base stations is larger or smaller than the predetermined number; and a positioning system selection means for controlling the first positioning calculation means to perform the positioning calculation when the number of base stations is determined to be larger than the predetermined number by the comparison means and controlling the second positioning calculation means to perform the positioning calculation when the number of base stations is determined to be smaller than the predetermined number by the comparison means.