Method and apparatus for assigning a channel to a mobile unit in a wireless communication system
CA 2201840 C · Owner: Motorola, Inc. · Inventors: D'Avello, Robert Faust
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A unique method and apparatus determines (310) which channels in a wireless communication system are both authorized for cordless operation and available. A channel is then selectively chosen (328) from this list to reduce the probability that an interferer will be on the chosen channel. For example, the channel could be randomly selected from all available channels or randomly selected from a limited group of available channels to avoid co-channel interference. Alternatively the channel could be chosen, based upon the level of the signal that last caused that channel to be blocked. Finally, the channel could be chosen based upon the number of channels from an available channel to 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 April 4, 1997 and granted June 19, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 4, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 4, 2019.
- 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
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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.