Method of monitoring cellular radio channels to avoid adjacent and co-channel interference
CA 2059666 C · Owner: Chaplain, Eugenie Marie · Inventors: Chaplain, Eugenie Marie; Meche, Paul Solomon
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method to enhance the quality of cellular radio service is disclosed. Only those channels that have a reduced likelihood of co-channel or adjacent channel interference are allocated. This technique in, addition, allows information to be provided to the operating company of drawbacks with the currently engineered RF environment. In particular the base, station will scan for RSSI readings on its channel and channels adjacent to it. If a RSSI measurement above a predetermined threshold is detected, it is assumed that the base station is intercepting a signal from a mobile that is presently being served by another voice channel on an adjacent cell. If this base station were selected to …
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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 November 7, 1990 and granted December 1, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 7, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 7, 2012.
- 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.