H - Electricity – 04 – J
Patent
H - Electricity
04
J
H04J 4/00 (2006.01) H04M 1/733 (2006.01) H04Q 7/38 (2006.01)
Patent
CA 2047470
A method of operating a communications system, particularly a FDM-TDD cordless telephony system, in which, in order to expedite handover, a portable secondary station builds up a record of the status and quality of the other FDM channels in the system by every l in n (where n is an integer greater than one) TDD frames monitoring another FDM channel. The value of n is adaptive in that, as the quality of its existing channel deteriorates, the value of n decreases, thereby updating its record more rapidly. At handover, the secondary station is able to choose immediately an acceptable alternative channel, thereby avoiding the time overhead of scanning all the other FDM channels.
Fetherstonhaugh & Co.
Koninklijke Philips Electronics N.v.
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