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Expired Canadian patentCanada

Interference based dynamic channel assignment

CA 2202807 C · Owner: Sand, Donna M. · Inventors: Lubachevsky, Boris Dmitrievich; Grandhi, Sudheer A.; Kaufman, Joseph Samuel

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Abstract From the Canadian patent

An interference based dynamic channel assignment scheme for a wireless communication network, for self configuring dynamic channel assignment of a plurality of channels, comprises the steps of: prioritizing a channel list and prioritizing a selected subset of the prioritized channel list. In further enhancements of the present invention prioritizing a channel list is distributed on a per cell/sector basis so that prioritization is independent of frequency usage information from other cells/sectors and prioritization is based upon uplink and downlink characteristics.

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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 April 16, 1997 and granted December 18, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 16, 2017.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 16, 2019.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 16, 1997
GrantedDecember 18, 2001
Term endedApril 16, 2017
Patent numberCA 2202807 C
Classification (IPC)H04W16/10 +2 more

Timeline

Timeline From CIPO dates

1998200020022004200620082010201220142016Application filedApril 16, 1997Patent grantedDec 18, 2001Term endedApril 16, 2017

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