Method and apparatus for channel optimization during point-to-point protocol (ppp) session requests
CA 2396838 C · Owner: Rezaiifar, Ramin · Inventors: Rezaiifar, Ramin; Abrol, Nischal; Hsu, Raymond Tah-Sheng
Overview
Its claims, description and drawings are in the Canadian Patents Database.
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A method and apparatus for requesting PPP instances from a packet data services network includes a mobile station configured to send an origination message to a packet data service node (PDSN) at which it has arrived upon leaving the vicinity of another PDSN. The message informs the new PDSN of the new location of the mobile station and indicates both the number of dormant PPP instances associated with the mobile station and a service reference identifier for each such PPP instance. A flag within the message may be used to indicate whether the PPP instances are dormant (i.e. whether the mobile station is engaged in a call). Communications channel resources of packet data services …
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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.
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- Filed January 26, 2001 and granted August 14, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 26, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 26, 2023.
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