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:
Jul. 16, 2013
Filed:
Oct. 09, 2007
Janne Peisa, Espoo, FI;
Michael Meyer, Aachen, DE;
Johan Torsner, Masaby, FI;
Stefan Parkvall, Stockholm, SE;
Mats Sägfors, Kyrkslätt, FI;
Magnus Lindström, Spånga, SE;
Janne Peisa, Espoo, FI;
Michael Meyer, Aachen, DE;
Johan Torsner, Masaby, FI;
Stefan Parkvall, Stockholm, SE;
Mats Sägfors, Kyrkslätt, FI;
Magnus Lindström, Spånga, SE;
Telefonaktiebolaget LM Ericsson (Publ), Stockholm, SE;
Abstract
A method and apparatus according to the present invention addresses and/or prevents lost protocol synchronization in HARQ systems caused by ACK/NACK errors. One embodiment detects lost synchronization errors for NDI-based retransmission protocols and restores synchronization by sending an explicit RESET message. In response to the RESET message, the transmitter aborts the transmission of a current PDU and transmits a new PDU and corresponding NDI. Another embodiment prevents protocol synchronization errors by sending scheduling grants on a packet by packet basis. The receiver sends a subsequent explicit scheduling grant to the transmitter based on an error evaluation of a received PDU. The transmitter will not send the next PDU unless it receives the subsequent explicit scheduling grant.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile