Frequency hopping piconets in an uncoordinated wireless multi-user system
CA 2304189 A1 · Owner: Telefonaktiebolaget Lm Ericsson · Inventors: Haartsen, Jacobus Cornelis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A wireless network includes master (1201) and slave units (1203). The master sends a master address (1205) and clock (1207) to the slaves. Communication is by means of a virtual frequency hopping channel whose hopping sequence is a function of the master address, and whose phase is a function of the master clock. Transmitted inquiry messages solicit slave address and topology information from the slaves, which may be used to generate a configuration tree (1001) for determining a route for a connection between the master and slave units. Slave address (1213) and topology information may include an own address from each of the slave units and only first order address lists from each …
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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 16, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 16, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 16, 2020.
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Timeline
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.