Method and apparatus for base station selection in diversity handover
CA 2240952 C · Owner: Yamada, Daisuke · Inventors: Kato, Osamu; Yamada, Daisuke
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
At CRC comprising circuit 21, CRC evaluation results transmitted from base station BS#1 and base station BS#2 are compared. In the case where CRC signals are both OK signals or NG, TPC comprising circuit 22 compares TPC evaluation results i.e. the number of "0" symbols in TPC bits, transmitted from base station BS#1 and base station BS#2. And, in the case of no deference in TPC signals, the number of "0" symbols in TPC bits in earlier several frames is evaluated. According to the method described above , control station MCC selects a base station then obtain an information signal from the base station.
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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 October 17, 1997 and granted July 9, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 17, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 17, 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
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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.