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Expired Canadian patentCanada

Multi-carrier arrangement for high speed data

CA 2397897 C · Owner: Strawczynski, Leo L. · Inventors: Tong, Wen; Periyalwar, Shalini S.; Strawczynski, Leo L.

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

The system and method of the present invention uses a plurality of carriers by assigning user terminals to the plurality of carriers so that a minimum grade of service is met and so that throughput is maximized. Each serviced user terminal reports the channel quality of each of a plurality of carriers to a servicing base station(s). The reported channel qualities are then converted to maximum supported data rates for each of the user terminals and each of the carriers. These data rates are then used to allocate data service levels and data rates for each of the user terminals so that a minimum grade of service is met for each of the user terminals. Forward link transmissions e.g. …

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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 19, 2001 and granted August 14, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 19, 2021.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 19, 2023.
  • 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 19, 2001
GrantedAugust 14, 2012
Term endedJanuary 19, 2021
Patent numberCA 2397897 C
Classification (IPC)H04W28/06 +2 more

Timeline

Timeline From CIPO dates

2002200420062008201020122014201620182020Application filedJan 19, 2001Patent grantedAug 14, 2012Term endedJan 19, 2021

Sources & verification

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