Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Patent
1998-05-07
2000-10-10
Hunter, Daniel S.
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
455447, 455448, 455449, 455561, 455 31, 370337, 370335, H04Q 720, H04Q 730
Patent
active
061310336
ABSTRACT:
Methods and systems of communication reduce the internal interference associated with conducting radio communication in a wireless local loop communication system down to acceptable levels. Problems associated with internal interference are solved by providing carrier frequency rotation during time slots in a frame. A plurality of radio fixed parts are utilized for conducting radio communication with user terminals. During operation, each of a plurality of sequentially related carrier frequencies is assigned in sequential order to a respective one of the plurality of radio fixed parts. Each of the plurality of carrier frequencies is advanced during each successive time slot during operation of the wireless system. In addition, the control system controls operation of the radio fixed parts by allowing and disallowing transmission and reception in certain predetermined time slots.
REFERENCES:
patent: 5307372 (1994-04-01), Sawyer et al.
patent: 5533027 (1996-07-01), Ackerberg et al.
patent: 5581548 (1996-12-01), Ugland et al.
patent: 5604789 (1997-02-01), Lerman
patent: 5848095 (1998-12-01), Deutsch
patent: 5999818 (1999-12-01), Gilbert et al.
Ericsson Inc.
Gantt Alan
Hunter Daniel S.
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