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Expired Canadian patentCanada

Apparatus and method for non-regular channel assignment in wireless communication networks

CA 2093975 C · Owner: Benveniste, Mathilde · Inventors: Benveniste, Mathilde

CIPO record

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Abstract From the Canadian patent

A channel assignment system assigns channels to various cells by the optimal partitioning of the available radio frequencies into non-overlapping sets the, optimal grouping of co-user cells and the best assignment of the former to the latter. The objective is the maximization of traffic handling capacity which given the, multitude of cells, is expressed as the maximization of a bottleneck capacity ratio. The capacity ratio for a cell is defined as the ratio of the number of radio frequencies assigned to the cell over the number of radio frequencies needed to meet blocking probability requirements. The solution to attain an optimal non-regular channel assignment is decomposed into two …

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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 14, 1993 and granted February 16, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 14, 2013.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 14, 2015.
  • 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 14, 1993
GrantedFebruary 16, 1999
Term endedApril 14, 2013
Patent numberCA 2093975 C
Classification (IPC)H04W16/02 +2 more

Timeline

Timeline From CIPO dates

1994199619982000200220042006200820102012Application filedApril 14, 1993Patent grantedFeb 16, 1999Term endedApril 14, 2013

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