United States Patent 7,574,645
Pan , et al. August 11, 2009
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Wireless communication method and apparatus for detecting and decoding enhanced dedicated channel hybrid automatic repeat request indicator channel transmissions
Abstract
A wireless communication method and apparatus for detecting and decoding enhanced dedicated channel (E-DCH) hybrid automatic repeat request (H-ARQ) indicator channel (E-HICH) transmissions are disclosed. A wireless transmit/receive unit (WTRU) receives E-HICH transmissions and detects an H-ARQ indicator transmitted via the E-HICH by performing a binary hypothesis test. The WTRU then generates an acknowledgement (ACK) message or a non-acknowledgement (NACK) message based on the detected H-ARQ indicator. A reliability test may be further performed to improve performance, whereby the binary hypothesis test may be performed only if the reliability test is passed.
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Inventors: Pan; Jung-Lin (Selden, NY), Yang; Rui (Greenlawn, NY), Terry; Stephen E. (Northport, NY)
Assignee: InterDigital Technology Corporation (Wilmington, DE)
Appl. No.: 11/477,278
Filed: June 29, 2006
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Related U.S. Patent Documents
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Application Number Filing Date Patent Number Issue Date
60709952 Aug., 2005
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Current U.S. Class: 714/748 ; 714/794
Current International Class: G08C 25/02 (20060101)
Field of Search: 714/748,749,751,754,794 370/236,395,506,23 375/343
