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Expired Canadian patentCanada

Implementing a smart antenna in a wireless local area network

CA 2580013 C · Owner: Cha, Inhyok · Inventors: Roy, Vincent; Chandra, Arty; Cha, Inhyok

CIPO record

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

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Abstract From the Canadian patent

A method for implementing a smart antenna in establishing association between a station (STA) and an access point (AP) in a wireless local area network begins by transmitting a beacon frame by the AP on one antenna beam. The beacon frame is received at the STA, which measures the signal quality of the beacon frame. The AP switches to a different antenna beam and repeats the method until the beacon frame has been transmitted on all antenna beams. The STA associates to the AP that transmits the beacon frame with the highest signal quality on one of its antenna beams. A similar method may be used in which the STA sends a probe request frame to the AP which then responds with , probe …

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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 September 7, 2005 and granted October 11, 2016. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 7, 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.
FiledSeptember 7, 2005
GrantedOctober 11, 2016
Term endedSeptember 7, 2025
Patent numberCA 2580013 C
Classification (IPC)H04W48/14 +2 more

Timeline

Timeline From CIPO dates

2006200820102012201420162018202020222024Application filedSep 7, 2005Patent grantedOct 11, 2016Term endedSep 7, 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.