G - Physics – 01 – S
Patent
G - Physics
01
S
G01S 5/14 (2006.01) H04Q 7/36 (2006.01) H04Q 7/38 (2006.01)
Patent
CA 2299418
A specific signal transmitted by a base station of a cellular system is received by a handset and positioning is performed at the handset based on the base station information stored in the handset. In more practical, a memory 6 is provided in the handset 1 to store position of the base station and transmission timing information of the specific signal. The timing of a receiving signal of at least three stations is detected and self position is estimated based on the shift from the transmission timing information of the base station. Deterioration in operation life of the battery of the handset can be prevented by controlling the transmission which requires large power consumption at the handset.
Selon l'invention, un terminal reçoit un signal spécifique transmis depuis une station de base d'un système cellulaire et effectue un positionnement sur la base des informations de la station de base stockées dans le terminal. Plus particulièrement, un terminal (1) est muni d'une mémoire (6) dans laquelle la position d'une station de base et les informations de synchronisation de la transmission d'un signal spécifique sont stockées. Les temps de réception des signaux provenant d'au moins trois stations sont mesurés, et la position du terminal est estimée à partir des différences entre les informations de synchronisation de la transmission et les temps de réception des signaux reçus. La transmission à partir du terminal, très gourmande en énergie, est réduite, ce qui préserve la durée de vie de l'accumulateur du terminal.
Doi Nobukazu
Ishifuji Tomoaki
Kuwahara Mikio
Hitachi Ltd.
Kirby Eades Gale Baker
LandOfFree
Positioning apparatus using cellular communication does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Positioning apparatus using cellular communication, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Positioning apparatus using cellular communication will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1749780