H - Electricity – 04 – B
Patent
H - Electricity
04
B
H04B 7/26 (2006.01) H04M 1/00 (2006.01) H04Q 7/38 (2006.01) H04Q 7/32 (2006.01) H04Q 7/36 (2006.01)
Patent
CA 2106568
A portable radiotelephone (101) communicates with both a cordless base station (115) servicing a local coverage area and a cellular base station (105) servicing a wide coverage area over cellular frequency channels. Each of the portable radiotelephone (101) and the cordless base station (115) scans the available channels based upon a measure of interference or a type of service on the cellular frequency channels to generate separate priority lists for the cellular frequency channels. Each of the portable radiotelephone (101) and the cordless base station (115) ranks the available channels in its own priority list from best to worst. The priority lists from each of the portable radiotelephone (101) and the cordless base station (115) are combined in the portable radiotelephone (101) or the cordless base station (115) to form a master priority list. The clearest available channel from the master priority list is assigned to the portable radiotelephone (101) and the cordless base station (115) for communicating 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.
D'avello Robert F.
Krolopp Robert Kurt
Schelinger Michael John
Gowling Lafleur Henderson Llp
Motorola Inc.
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