Scheme for wire line data transmission in mobile communication system
CA 2199892 C · Owner: Ntt Mobile Communications Network Inc. · Inventors: Nakamura, Takehiro; Yamagata, Katsuhiko
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A wire line data transmission scheme in a mobile communication system for reducing the wire line transmission const. Radio state qualities of a plurality of radio channels between the plurality of base stations and the mobile station are measured, and a validity and a redundancy in composition of each radio channel is judged according to the corresponding measured radio state quality. Then, a transmission in the wire line transmission paths is controlled by stopping a transmission of transmission signals for those radio channels which are judged as invalid or redundant according to the obtained judgement result. All of measuring, judging and, controlling can be carried out by each base …
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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 March 13, 1997 and granted August 7, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 13, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 13, 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
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.