| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of estimating a location of a wireless terminal, using a non-GPS extraction technique, in order to generate a location specifying auxiliary data for the radio terminal met to an assisted GPS. SOLUTION: In this method, the wireless terminal acquires and processes one or a plurality of GPS signals, using the auxiliary data, and extracts information serving as an evidence of the location of the wireless terminal. The GPS extraction location information is combined thereafter with a non-GPS extraction location to form an estimation value of the location of the wireless terminal. This combination of a GPS extraction technique and the non-GPS extraction technique is useful, in particular, when the wireless terminal can acquire only one or two GPS signals, because the location of the wireless terminal is impossible to be determined with the only two GPS signals. COPYRIGHT: (C)2008,JPO&INPIT
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