Using a frequency that is unavailable for carrying telephone voi

Details Using a frequency that is unavailable for carrying telephone voi Using a frequency that is unavailable for carrying telephone voi

1996-06-06

1999-10-19

Chin, Wellington

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

455457, 455550, H04Q 720

Patent

active

059704136

ABSTRACT:
A method for determining the position of a mobile station within a cellular telephone system having a plurality of cells. Voice information signals are transmitted between a first base station transmitter and a mobile station on a transmission channel. Thereafter, transmissions from the first base station transmitter of voice information signals on the transmission channel are ceased for a predetermined period of time. During the predetermined period of time when transmissions of voice information signals from the first base station transmitter have ceased on the transmission channel, the mobile station makes positional measurements. The position of the mobile station is determined in accordance with the positional measurements.

REFERENCES:
patent: 5046130 (1991-09-01), Hall et al.
patent: 5280629 (1994-01-01), Lo Galbo et al.
patent: 5423067 (1995-06-01), Manabe
patent: 5600706 (1997-02-01), Dunn et al.
patent: 5732354 (1998-03-01), MacDolnd
patent: 5844522 (1995-10-01), Sheffer et al.

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