Wireless access telephone-to-telephone network interface architecture
CA 2066558 C · Owner: Lucent Technologies Inc. · Inventors: Roberts, Lajeana Nicole; Miller, Paul Eugene; Smith, Michael Adrian
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A wireless-access communications system such as a CDMA cellular radio-telephonesystem (FIG. 2) comprises a packet-switched communications network (202 207, 201) that interconnects cells (base stations; 202) with each other and with the public telephone network (100). Traffic of individual calls is packetized and packet-, bearing frames (300 in FIG. 7) of a plurality of calls are then statistically multiplexed and frame-relayed through the network to yield the high capacity efficiency, and speed of traffic transport and handoff required for a CDMA cellular system. At each call processing unit (264 in FIG. 5) individual calls are handled by, individual service circuits (602 & 612) which …
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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, 1992 and granted June 17, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 21, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 21, 2014.
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Timeline
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Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.