Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Patent
1995-03-24
1998-10-27
Vo, Nguyen
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
455447, 455449, 455451, H04Q 736
Patent
active
058289631
ABSTRACT:
A micro-cellular radio communications system (microsystem) is arranged to re-use radio frequency channels which are assigned for use in a cellular radio system (macrosystem) in the same vicinity. The microsystem maintains a list of each frequency channel which is in current use in any microcell of the microsystem. In each microcell of the microsystem a signal characteristic, for example received signal strength, of each frequency channel, is repeatedly measured when the channel is not in current use in any microcell of the microsystem, and the measurements are used to determine a long-term statistical preference for re-use of a favoured set of the frequency channels in that microcell. For each microcell, the frequency channels in the favoured set are given a short-term order for actual use in dependence upon frequent measurements of the signal characteristic for the microcell regardless of whether or not the channel is in current use in any other microcell of the microsystem.
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Basu Kalyan
Grandhi Sudheer A.
Madhavapeddy Seshagiri R.
Staley Hong D.
Willhoff Steven J.
Nguyen Lee
Northern Telecom Limited
Vo Nguyen
LandOfFree
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