Communication channel selection in cellular radio communication systems
CA 2124556 C · Owner: Telefonaktiebolaget Lm Ericsson · Inventors: Mayrand, Luc
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system for allocating communication channels within a cellular radio system in which each channel seizure request is assigned a call type based upon the capabilities of the mobile station, the nature of the call and the characteristics of the subscriber. A first algorithm is used to select a communication channel group for the call and a second algorithm is used to select an available communication channel from within the selected channel group.
Read the whole patent
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 1, 1993 and granted May 27, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 1, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 1, 2015.
- 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.