United States Patent 7,979,768
Sammour , et al. July 12, 2011
Method and system for implementing hybrid automatic repeat request
Abstract
A receiver sends hybrid automatic repeat request (H-ARQ) feedback for a current packet and at least one previous packet, whereby an error is detected based on the H-ARQ feedback. The receiver sends H-ARQ feedback with an identification of the packet or a sequence number of a packet that the receiver expects to receive next. The receiver stores a packet in a memory before combining the packet with a previously received packet, and decodes the stored packet after failing to decode a combined packet to avoid a corruption error. The receiver may set a timer when sending a NACK. If the receiver fails to receive a packet until expiration of the timer, the receiver initiates a process for recovering the packet. Each H-ARQ feedback may be associated with other attributes. Some H-ARQ processes may operate in an asynchronous mode while others in a synchronous mode in the same direction.
Inventors: Sammour; Mohammed (Montreal, CA), Terry; Stephen E. (Northport, NY), Chen; John S. (Downingtown, PA), Zhang; Guodong (Farmingdale, NY), Chandra; Arty (Manhasset Hills, NY)
Assignee: InterDigital Technology Corporation (Wilmington, DE)
Appl. No.: 11/688,397
Filed: March 20, 2007
Related U.S. Patent Documents
Application Number Filing Date Patent Number Issue Date
60784511 Mar., 2006
Current U.S. Class: 714/748 ; 370/345; 455/522; 709/237
Current International Class: G08C 25/02 (20060101)
Field of Search: 714/748 370/345,347,473,467 455/522 709/237
PPP
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