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Using-a-signal-with-increased-power-for-determining-the-position-of-a-mobile-subscriber-in-a-CDMA-cellular-telephone-system

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Using a signal with increased power for determining the position of a mobile subscriber in a CDMA cellular telephone system

Details

Inventors: Gilhousen, Klein S.;
Assignee: Qualcom Incorporated (San Diego, CA)
Primary Examiner: Issing; Gregory C.
Assistant Examiner:
Attorney, Agent or Firm: Miller; Russell B., Greenhaus; Bruce W., Streeter; Tom

A method for determining the position of a mobile station within a cellular telephone system having a plurality of base stations. A signal is transmitted at a low power level from the mobile station. The strength of the signal is then temporarily increased from the low power level to an increased power level, and the signal is temporarily transmitted from the mobile station at this increased power level. While the signal is being temporarily transmitted from the mobile station at the increased power level, the signal is used to make at least a first positional measurement. The position of the mobile station is determined in accordance with the first positional measurement.

DETAILED DESCRIPTION The present invention is directed to a method for determining the position of a mobile station within a cellular telephone system having a plurality of base stations.
A signal is transmitted at a low power level from the mobile station.
The strength of the signal is then temporarily increased from the low power level to an increased power level, and the signal is temporarily transmitted from the mobile station at this increased power level.
While the signal is being temporarily transmitted from the mobile station at the increased power level, the signal is used to make at least a first positional measurement.
The position of the mobile station is determined in accordance with the first positional measurement.

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