Mobile telephone system which sends a mobile's positional data t

Details Mobile telephone system which sends a mobile's positional data t Mobile telephone system which sends a mobile's positional data t

1998-02-27

2000-08-08

Tsang, Fan

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

455566, 455414, 455518, H04Q 722

Patent

active

061013919

ABSTRACT:
A base station calculates distances to respective mobile stations and transmits the distances, and a control station determines positions of respective mobile stations based on the distances between plural base stations and respective mobile stations. The control station previously stores the same identification code for specific plural mobile stations, and examines whether or not any other mobile station having the same identification code exists within a range scale designated by one of the specific plural mobile stations, and then gives notice of the search result to one of specific plural mobile stations via the base station.

REFERENCES:
patent: 5515426 (1996-05-01), Yacenda et al.
patent: 5873041 (1999-02-01), Ishii

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