G - Physics – 05 – B
Patent
G - Physics
05
B
G05B 19/045 (2006.01) G06F 7/00 (2006.01) G06F 15/18 (2006.01) G06F 17/40 (2006.01) H04Q 7/38 (2006.01)
Patent
CA 2256978
A method and an apparatus for using fuzzy logic to determine when handovers are desirable and the extent to which the radio transmission power in a cellular telephone network should be adjusted. The mobile phone and the base transceiver station measure certain system parameters, including rate of handover, quality, distance, level, call duration, and power. These measurements are input to a fuzzifier. The fuzzifier applies standard fuzzy-set-theory membership functions to the measurements, and the fuzzifier outputs a set of fuzzy variables corresponding to the measurements. The fuzzifier outputs are input to an inference engine. The inference engine contains a set of rules that, when applied to the inference engine inputs, indicate: when a handover should be performed; when a handover should not be performed; and the amount by which, if any, the transmission power should be adjusted.
Fernandez Christopher Lawrence
Herpers Martine Madelaine
Hoch James Edward
Kurdukar Prashant Janardham
Ramesh Masoor
Kirby Eades Gale Baker
Lucent Technologies Inc.
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