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Expired Canadian patentCanada

Organization of automatic power save delivery buffers at an access point

CA 2504809 C · Owner: Avaya Technology Llc · Inventors: Benveniste, Mathilde

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 and apparatus providing delivery of buffered frames in a Wireless Local Area Network (WLAN) is presented. The method and apparatus determines an occurrence of at least one non-APSD station in said WLAN and when at least , one , non- Automatic Power Save Delivery (APSD) station is found then maintains a , legacy power saving buffer for each non-APSD station. The method and apparatus also determines an occurrence of at least one APSD station in the WLAN and , when at least one APSD station is found then maintains at least one APSD , buffer for each APSD enabled station. During a service period frames are transmitted , from the , at least one APSD buffer.

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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 21, 2005 and granted July 10, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 21, 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 21, 2005
GrantedJuly 10, 2012
Term endedApril 21, 2025
Patent numberCA 2504809 C
Classification (IPC)H04W52/02 +2 more

Timeline

Timeline From CIPO dates

2006200820102012201420162018202020222024Application filedApril 21, 2005Patent grantedJuly 10, 2012Term endedApril 21, 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.