System and method for transmitting subscriber data in a narrowband advanced messaging system using unscheduled message time slots
CA 2383707 A1 · Owner: Pagemart Wireless, Inc. · Inventors: Larghi, Steven
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is disclosed, for use in a narrowband wireless messaging network (100) a subscriber communication unit (124) that uses a miscellaneous ALOHA message to transmit predefined messages and/or formatted telemetry data to a base tension. The subscriber communication unit (124) comprises a transceiver (225) for receiving messages from the base station (112) in a forward channel and transmitting messages to the base station (112) in a reverse channel. The reverse channel is divided into a plurality of scheduled transmission time slots and a plurality of unscheduled transmission time slots of the ALOHA type. A message controller (210) receives input data generated by the subscriber …
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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 1, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 1, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 1, 2022.
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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.