Coverage area sectorization in time division multiple access/frequency-time division duplex communications systems
CA 2319803 A1 · Owner: Lenzo, Michael J. · Inventors: Lenzo, Michael J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Sectorization methods and apparatus provide full time and spectral coverage in wireless communications systems employing frequency-time division duplex formats. According to exemplary embodiments a number of base stations are , strategically positioned and configured using frequency-division duplex transceivers of different time-reference type so that a duplex link can be set up anywhere within the system coverage area during any available system time slot. Advantageously, the disclosed methods provide a high degree of adjacent sector interference immunity with relatively little hardware complexity.
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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 February 2, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 2, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 2, 2021.
- 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.