Power control protocol for highly variable data rate reverse link of a wireless communication system
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United States of America Patent
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Apr 20, 2010
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Feb 13, 2007
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Sep 21, 1998
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Abstract
A technique for implementing closed loop power control in a wireless system using a modulation that requires synchronization over the radio channel, which dynamically assigns coded channels on a demand basis. The technique maintains a proper power level, even when no traffic channels are allocated, by determining a link quality metric based upon the reverse link power received. This determination is made in response to a heartbeat signal sent at a rate which is only sufficiently fast to maintain code phase lock, for example, depending upon the expected maximum rate at which the subscriber unit will travel.
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