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United States Patent 7,680,071
Bultan , et al. March 16, 2010

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Method and apparatus for managing power during a discontinuous reception mode


Abstract
A method and apparatus for managing power during discontinuous reception (DRX) mode are disclosed. A DRX mode is defined for a wireless transmit/receive unit (WTRU) for reducing power consumption of the WTRU. During the DRX mode, the WTRU enters into a sleep state and periodically wakes up for processing paging blocks for detecting a paging indication for the WTRU and a corresponding paging message. If the WTRU is paged the WTRU terminates the DRX mode. If the WTRU is not paged, the WTRU reenters the sleep state. For power management during the DRX mode, a synchronization update period is defined. The synchronization update period is a period for performing automatic frequency correction and/or frame time correction.


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Inventors: Bultan; Aykut (Bayside, NY), Haim; John W. (Baldwin, NY), Kearney; Kenneth P. (Smithtown, NY), DiFazio; Robert A. (Greenlawn, NY), Grieco; Donald M. (Manhassett, NY)
Assignee: InterDigital Technology Corporation (Wilmington, DE)

Appl. No.: 11/322,705
Filed: December 30, 2005

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Related U.S. Patent Documents

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Application Number Filing Date Patent Number Issue Date
60717997 Sep., 2005


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Current U.S. Class: 370/311 ; 370/278; 370/466; 455/572; 455/574
Current International Class: G08C 17/00 (20060101)
Field of Search: 370/311 455/572,574