Geographical location system and method for locating radioteleph

Details Geographical location system and method for locating radioteleph Geographical location system and method for locating radioteleph

1997-06-03

2000-02-15

Trost, William G.

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

455422, H04Q 722

Patent

active

060263059

ABSTRACT:
A cellular radiotelephone (24) engages in a call over a bidirectional channel (32) involving a cellsite base station (68) within a cellular network (22). Upon receipt of a notice (46), a geographical location computer (20) is activated and transmits a call locate instruction identifying the bidirectional channel (32) to a plurality of dual channel receivers (56, 58, 60, and 61). The dual channel receivers (56, 58, 60, and 61) are then tuned to the bidirectional channel (32) and receive the forward (78) and reverse (82) location signals over forward and reverse directions of the bidirectional channel (32). A probable location of the cellular radiotelephone (24) is determined by measuring phase differences of the forward (78) and reverse (82) location signals at each of the dual channel receivers (56, 58, 60, and 61).

REFERENCES:
patent: 5515419 (1996-05-01), Sheffer
patent: 5600706 (1997-02-01), Dunn et al.
patent: 5602903 (1997-02-01), LeBlanc et al.
patent: 5613205 (1997-03-01), Dufour

Affiliated with

Also associated with

Rating

Geographical location system and method for locating radioteleph does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Geographical location system and method for locating radioteleph, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Geographical location system and method for locating radioteleph will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1913563