| US 7,432,923 B2 | ||
| Position measuring method and mobile communication terminal | ||
| Masanori Fujiwara, Tokyo (Japan); Satoshi Miyata, Tokyo (Japan); Seiichi Kawakami, Tokyo (Japan); Jun Sakamoto, Tokyo (Japan); Kazuya Kawakami, Tokyo (Japan); and Atsushi Wada, Tokyo (Japan) | ||
| Assigned to Vodafone Group PLC, Newbury, Berkshire (United Kingdom) | ||
| Filed on Jan. 08, 2007, as Appl. No. 11/650,476. | ||
| Application 11/650476 is a continuation of application No. PCT/JP2005/012670, filed on Jul. 08, 2005. | ||
| Claims priority of application No. 2004-203194 (JP), filed on Jul. 09, 2004. | ||
| Prior Publication US 2007/0109186 A1, May 17, 2007 | ||
| Int. Cl. G01S 5/14 (2006.01) | ||
| U.S. Cl. 345—357.09 [342/357.1; 342/357.15] | 10 Claims |
| 1. A method for position measurement which measures a current location at which a mobile communication terminal exists, comprising
steps of:
determining GPS position measurement technique, said technique corresponding to one selected from among an assisted GPS position
measurement and an autonomous GPS position measurement,
wherein the assisted GPS position measurement is a position measurement using assistance information which includes information
for capturing a GPS satellite, wherein the assistance information, when necessary, is acquired from a location information
server which holds the assistance information, and
wherein the autonomous GPS position measurement is a position measurement using a GPS satellite which does not use the assistance
information;
performing assisted GPS position measurement when said determining corresponds to the assisted GPS position measurement; and
performing autonomous GPS position measurement when said determining corresponds to the autonomous GPS position measurement;
the method further comprising steps of:
determining a specified position measuring technique at which,
when a request for position measuring is received, and when a position measuring technique specified is a cell ID position
measuring in which location information of a cell in a range of which the mobile communication terminal exists is acquired,
the cell ID position measuring is determined to be performed, and moreover,
in any one of two cases namely a case in which the position measuring technique specified is a GPS position measurement technique
which includes the assisted GPS position measurement and the autonomous GPS position measurement, and a case in which the
position measuring technique is not specified, a GPS position measurement is performed; and
cell ID position measuring at which, when the cell ID position measuring is determined at the step of determining the specified
position measuring technique, the cell ID position measuring is performed, wherein
when the GPS position measurement is determined to be performed at the step of determining the specified position measuring
technique, the step of determining GPS position measurement technique is executed.
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