Method for indicating a channel for sending uplink access request and trunking system
CA 2576532 C · Owner: Liu, Guang · Inventors: Liu, Guang; Chen, De; Zheng, Yali
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for indicating a channel for sending an uplink access request includes: , sending an indication message indicating whether a group call channel uplink is available , in a cell of a group call area; receiving an uplink access request via the group call channel , uplink from a listener if the group call channel uplink is available according to the , indication message; and receiving the uplink access request via an uplink channel from , the listener if the group call channel uplink is unavailable according to the indication , message. A trunking system a Base Station and a Mobile Station are also disclosed in , embodiments of the present invention. The solution of the present …
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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 May 15, 2006 and granted July 9, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 15, 2026.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
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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.