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Expired Canadian patentCanada

System and method for allocating a channel quality information channel in a communication system

CA 2593437 C · Owner: Cho, Jae-Weon · Inventors: Lee, Sung-Jin; Lim, Hyoung-Kyu; Koo, Chang-Hoi

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Abstract From the Canadian patent

A method for allocating a channel quality information channel (CQICH) in a communication system is disclosed. After fast switching from a serving anchor base station (BS) to a target anchor BS a mobile station (MS) detects absence of a CQICH allocated from the target anchor BS. Upon detecting the absence of the allocated CQICH, the MS sends a request for allocating the CQICH to the target anchor BS. Upon receiving the CQICH allocation request the target , anchor BS detects a need to allocate a CQICH to the MS.

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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 January 10, 2006 and granted July 17, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 10, 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.
FiledJanuary 10, 2006
GrantedJuly 17, 2012
Term endedJanuary 10, 2026
Patent numberCA 2593437 C
Classification (IPC)H04B7/26

Timeline

Timeline From CIPO dates

2007200920112013201520172019202120232025Application filedJan 10, 2006Patent grantedJuly 17, 2012Term endedJan 10, 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.