Control channel selecting method for mobile stations
CA 2105265 C · Owner: Ntt Mobile Communications Network Inc. · Inventors: Kobayashi, Katsumi; Yunoki, Kazufumi; Nagata, Kiyohito
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In the selection of a control channel of a mobile station in a radio zone to which some control channels are assigned as communication channels the receiving levels of the control channels are sequentially measured and control channel candidates are selected. A check is made to see if a control signal can correctly be received in each of the selected control channel candidates and if not, the number of signal reception failures in that channel is incremented by 1 in a memory used by the mobile station. A channel in which the number of signal reception failures has reached a predetermined value M (an integer equal to or greater than 1) is excluded from the group of control channel candidates …
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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 August 31, 1993 and granted August 3, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 31, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 31, 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.