Digital mobile communications system and method for providing intensity/coverage reference maps using base stations and mobile stations
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United States of America Patent
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-
Jun 6, 1995
Grant Date -
N/A
app pub date -
Sep 4, 1992
filing date -
Sep 9, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A digital mobile communications system which maintains synchronization among sending data of base stations, measures the time delay of radio waves from mobile stations under control at the control base station and instructs the value of time delay to each mobile station to adjust the timing of sending data of mobile stations to establish synchronization of communications between the base station and the mobile stations, wherein the system comprises means for measuring at mobile stations relative time delays of radio waves from at least one base station other than the control base station with respect to the radio waves from the control base station and periodically reporting the relative time delays to the control base station, and means for calculating at the base station the distances between the mobile station and the base stations and further determining the current geographic positions of the mobile station.
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