Improved apparatus and method of providing a mobile communication system
CA 2252012 A1 · Owner: Nortel Matra Cellular · Inventors: Duplessis, Philippe; Lucidarme, Thierry
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides a mobile radio telephone system (10 15) and a method of, operating it in which the beacon frequency is at least temporarily transmitted in a discontinuous manner. This allows a base transceiver station (2 4, 6, 16, 20, 22) to make, use of the gained time for either transmitting on another frequency or monitoring neighboring radio frequency sources for potential interference. In a particular embodiment of the present invention the beacon frequency is, interrupted by connecting the transmission path to the receiver path within the base transceiver station (2, 4, 6, 16, 20, 22). This may be done by single pole double throw high frequency switches. The …
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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 October 16, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 16, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 16, 2020.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
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.