Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Patent
1998-05-07
2000-10-31
Hunter, Daniel S.
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
455440, H04Q 720
Patent
active
061415588
ABSTRACT:
After determining a distressed mobile subscriber communication unit 100 is within a communication coverage area (60) of a base transceiver station (BTS) (22), a mobile BTS (55) positioned at a first location (201) uses a rotating directional antenna (46) to force mobile subscriber communication units including the mobile subscriber communication unit (100) to hand off communication. When the mobile BTS (55) detects the subscriber ID associated with the mobile subscriber communication unit (100) during handoff, a first direction of the directional antenna (46) is noted. The same procedure is repeated at another location (202) and a second direction of the directional antenna (46) is noted. A triangulation process using the first and second direction of the directional antenna and the first and second locations (201) and (202), reveal the location (203) of the mobile subscriber communication unit (100).
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patent: 5613205 (1997-03-01), Dufour
patent: 5625364 (1997-04-01), Herrick
patent: 5729826 (1998-03-01), Gavrilovich
Corsaro Nick
Donato, Jr. Mario J.
Hunter Daniel S.
Motorola Inc.
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