Invention Grant
- Patent Title: Mobile communication terminal and location system selection method
- Patent Title (中): 移动通信终端和定位系统选择方法
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Application No.: US13699125Application Date: 2011-05-25
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Publication No.: US08818421B2Publication Date: 2014-08-26
- Inventor: Jun Hashimoto , Makoto Takahashi , Kentaro Itagaki
- Applicant: Jun Hashimoto , Makoto Takahashi , Kentaro Itagaki
- Applicant Address: JP Tokyo
- Assignee: NTT Docomo, Inc.
- Current Assignee: NTT Docomo, Inc.
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spival, McClelland, Maier & Neustadt, L.L.P.
- Priority: JPP2010-119293 20100525
- International Application: PCT/JP2011/062023 WO 20110525
- International Announcement: WO2011/148993 WO 20111201
- Main IPC: H04W24/00
- IPC: H04W24/00

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.
Public/Granted literature
- US20130115975A1 MOBILE COMMUNICATION TERMINAL AND LOCATION SYSTEM SELECTION METHOD Public/Granted day:2013-05-09
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