InterDigital Inc (IDCC)

[Gamco]

United States Patent 7,701,903
Proctor, Jr. April 20, 2010

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Power control protocol for highly variable data rate reverse link of a wireless communication system


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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Inventors: Proctor, Jr.; James A. (Indialantic, FL)
Assignee: IPR Licensing, Inc. (Wilmington, DE)

Appl. No.: 11/706,463
Filed: February 13, 2007

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Related U.S. Patent Documents

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Application Number Filing Date Patent Number Issue Date
11250727 Oct., 2005 7184417
09158421 Oct., 2005 6956840


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Current U.S. Class: 370/329 ; 370/342; 370/465; 370/522
Current International Class: H04W 4/00 (20060101); H04J 3/00 (20060101); H04J 3/12 (20060101)
Field of Search: 370/329,464,342,465,522