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Expired Canadian patentCanada

Shared signaling channel for a communication system

CA 2574281 C · Owner: Agrawal, Avneesh · Inventors: Agrawal, Avneesh

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Abstract From the Canadian patent

A shared signaling channel has multiple segments and parameters for this , channel may or may not be sent to users in advance. For example the number of , segments, the size and rate of each segment and so on may be broadcast to the , users via an overhead channel. The transmit power for each segment is not broadcast to the users and can range from zero to the total transmit power. A base station obtains signaling for all terminals within its coverage and maps the signaling for each terminal to at least one segment used for the terminal which may be dynamically selected. The base station processes (e.g. jointly or individually encodes) the signaling mapped to each segment and generates …

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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 4, 2005 and granted June 7, 2016. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 4, 2025.
  • 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.
FiledApril 4, 2005
GrantedJune 7, 2016
Term endedApril 4, 2025
Patent numberCA 2574281 C
Classification (IPC)H04W4/06 +1 more

Timeline

Timeline From CIPO dates

2006200820102012201420162018202020222024Application filedApril 4, 2005Patent grantedJune 7, 2016Term endedApril 4, 2025

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