United States Patent 8,045,520
Zeira , et al. October 25, 2011
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Downlink power control for multiple downlink time slots in TDD communication systems
Abstract
The present invention is a method and system for controlling downlink transmission power levels in a spread spectrum time division communication system having frames with time slots for communication, which receives at a user equipment (UE) a downlink communication from a base station and determines an error rate of the received communication. The UE then produces power level adjustments for each of the time slots based in part on the error rate and transmits an uplink communication to the base station which includes the power level. In response to the power level adjustments and (or) other information, transmission power level is set for each time slot in the downlink communication.
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Inventors: Zeira; Eldad (Huntington, NY), Terry; Stephen E. (North Port, NY), Zeira; Ariela (Huntington, NY)
Assignee: InterDigital Technology Corporation (Wilmington, DE)
Appl. No.: 09/845,803
Filed: April 30, 2001
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Related U.S. Patent Documents
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Application Number Filing Date Patent Number Issue Date
60200756 May., 2000
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Current U.S. Class: 370/330
Current International Class: H04L 12/26 (20060101)
Field of Search: 370/310,314,318,320,333 455/422.1,522,560 714/708,704 375/259,295,320
PPP
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