Mimo wlan system
CA 2500355 C · Owner: Qualcomm Incorporated · Inventors: Walton, J. Rodney; Howard, Steven J.; Wallace, Mark S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A multiple-access MIMO WLAN system that employs MIMO OFDM, and TDD. The , system (1) uses a channel structure with a number of configurable transport channels, (2) supports multiple rates and transmission modes which are , configurable based on channel conditions and user terminal capabilities (3) , employs a pilot structure with several types of pilot (e.g. beacon MIMO, steered reference, and carrier pilots) for different functions (4) implements , rate, timing, and power control loops for proper system operation and (5) , employs random access for system access by the user terminals fast , acknowledgment, and quick resource assignments. Calibration may be performed to account for …
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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 24, 2003 and granted December 16, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 24, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 24, 2025.
- 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.