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Expired Canadian patentCanada

Channel quality measurements for downlink resource allocation

CA 2776516 C · Owner: Interdigital Technology Corporation · Inventors: Miller, James M.; Terry, Stephen E.; Zeira, Ariela

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Abstract From the Canadian patent

In a wireless digital communication system which may employ CDMA technology a method and system for obtaining channel quality (CQ) measurements for downlink resource allocation wherein a User Equipment (UE) continuously measures a received signal code power ("RSCP") based on a communication on a reference channel provided by the network. The UE measures timeslot interference signal code power ("ISCP") either continuously by configuration or by rotation and reports downlink CQ. The UE may report the RSCP once and the ISCP per timeslot or may report some function of the RSCP/ISCP ratio such as modulation parameters or combined coding of all timeslots.

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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 May 14, 2002 and granted January 3, 2017. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 14, 2022.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 14, 2024.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 14, 2002
GrantedJanuary 3, 2017
Term endedMay 14, 2022
Patent numberCA 2776516 C
Classification (IPC)H04W24/00

Timeline

Timeline From CIPO dates

2003200520072009201120132015201720192021Application filedMay 14, 2002Patent grantedJan 3, 2017Term endedMay 14, 2022

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