Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Patent
1997-09-15
1999-02-02
Eisenzopf, Reinhard J.
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
455524, H04Q 700
Patent
active
058677860
ABSTRACT:
A system for monitoring carriers of peripheral zones in a mobile telecommunication system, wherein when monitoring the carriers transmitted from the base stations in peripheral zones, the mobile units deem transmissions carriers to be true carriers received from peripheral zones and monitor the same when the two conditions stand that the received field strengths of the transmission carriers are at least a certain level and that there is significant data transmitted by the transmission carriers. Due to this, the mobile units are prevented from erroneous channel switching or zone shifting due to interference or a transmission carrier from another zone which may be deemed interference.
REFERENCES:
patent: 5008953 (1991-04-01), Dahlin et al.
patent: 5125105 (1992-06-01), Kennedy et al.
patent: 5239675 (1993-08-01), Dudczak
patent: 5285447 (1994-02-01), Hulsebosch
patent: 5471670 (1995-11-01), Hess et al.
patent: 5506869 (1996-04-01), Royer
Banks-Harold Marsha D.
Eisenzopf Reinhard J.
Fujitsu Limited
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