Frequency allocation for subscribers of multiple telephone systems having frequency sharing
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United States of America Patent
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-
May 4, 1999
Issued Date -
N/A
app pub date -
Sep 20, 1993
filing date -
Feb 6, 1992
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A portable radiotelephone (101) cooperatively operates with a cordless base station (115) over the local coverage area using cellular frequency channels. Both the portable radiotelephone (101) and the cordless base station (115) scan the available channels to generate separate priority lists. The portable radiotelephone (101) and the cordless base station (115) categorize the available channels in its own priority list from best to worst. The priority list from both the portable radiotelephone (101) and the cordless base station (115) are combined to form a master priority list. The cordless telephone system then assigns the clearest available channel from the master priority list for use in the cordless telephone system. Thus, interference to and from the cellular system and other users of the cellular frequencies is minimized and the need for frequency planning is eliminated.
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