Patent Number: 8,818,421

Title: Mobile communication terminal and location system selection method

Abstract: 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.

Inventors: Hashimoto; Jun (Tokyo, JP), Takahashi; Makoto (Tokyo, JP), Itagaki; Kentaro (Tokyo, JP)

Assignee: NTT Docomo, Inc.

International Classification: H04W 24/00 (20090101)

Expiration Date: 8/26/12018