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Expired Canadian patentCanada

Method and apparatus for improving data transmission reliability in a wireless communications system

CA 2601637 C · Owner: Lundby, Stein A. · Inventors: Jain, Avinash; Lundby, Stein A.

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Techniques for performing duplicate detection and re-ordering for a HARQ transmission are described. For duplicate detection a receiver determines , whether a decoded packet x for an ARQ channel y is a duplicate packet based on packet x and a prior decoded packet for ARQ channel y. For re-ordering the , receiver determines whether an earlier packet is still pending on any other ARQ channel based on prior decoded packets for the ARQ channels and forwards packet x only if there are no pending earlier packets. There are no pending earlier packets on another ARQ channel z if (1) a decoded packet was received on ARQ channel z at a designated time or later or (2) a decoded packet was not …

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Filed March 21, 2006 and granted August 11, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 21, 2026.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 21, 2006
GrantedAugust 11, 2015
Term endedMarch 21, 2026
Patent numberCA 2601637 C
Classification (IPC)H04L1/18

Timeline

Timeline From CIPO dates

2007200920112013201520172019202120232025Application filedMarch 21, 2006Patent grantedAug 11, 2015Term endedMarch 21, 2026

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.