Frequency allocation for subscribers of multiple telephone syste

Details Frequency allocation for subscribers of multiple telephone syste Frequency allocation for subscribers of multiple telephone syste

1993-09-20

1999-05-04

Eisenzopf, Reinhard J.

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

455425, 455426, 455452, 455455, 455552, 455 62, 455 63, H04Q 732

Patent

active

059013575

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.

REFERENCES:
patent: 4790000 (1988-12-01), Kinoshita
patent: 4856083 (1989-08-01), Makino
patent: 4989230 (1991-01-01), Gillig et al.
patent: 5044010 (1991-08-01), Frenkiel et al.
patent: 5119397 (1992-06-01), Dahlin et al.
patent: 5142691 (1992-08-01), Freeburg et al.
patent: 5197093 (1993-03-01), Knuth et al.
patent: 5212684 (1993-05-01), MacNamee
patent: 5276908 (1994-01-01), Koohgoli et al.

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