The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 17, 2008
Filed:
Dec. 13, 2001
Hang Zhang, Nepean, CA;
Mo-han Fong, L'Orignal, CA;
Mark Earnshaw, Nepean, CA;
Wei Huang, Nepean, CA;
Yoon Chae Cheong, Kanata, CA;
Hang Zhang, Nepean, CA;
Mo-Han Fong, L'Orignal, CA;
Mark Earnshaw, Nepean, CA;
Wei Huang, Nepean, CA;
Yoon Chae Cheong, Kanata, CA;
Nortel Networks Limited, St. Laurent, Quebec, CA;
Abstract
The present invention provides a fast and efficient retransmission technique, which allows a link control layer to request retransmission of frames upon receiving information from an underlying physical layer that an unsuccessful attempt to transmit data was detected. In general, a failed attempt to transmit a frame is detected at a physical layer of a receiver. In response, the physical layer of the receiver sends a message to a link control layer of the receiver to indicate the failed attempt to transmit a frame was detected. Upon receipt of the message, the link control layer sends a retransmission message to a corresponding link control layer of a sender. The retransmission message is configured to cause the sender to retransmit the unrecoverable data associated with the corrupted frame.