Method for performing wireless switching
CA 2869462 C · Owner: Interdigital Technology Corporation · Inventors: Zuniga, Juan Carlos; Hunkeler, Teresa Joanne
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A wireless LAN (WLAN) system for communications among a plurality of users within a basic service system or cell comprising a switching access point (SAP) for transmitting and receiving point-to-multipoint communications to and from the users. A plurality of ports are available at the SAP each of which assigned to a unique carrier frequency for isolating communications among the users to prevent collisions with the ability of frequency assignment to be non-permanent and a capability of dynamic or pseudo-random carrier assignment. An alternative embodiment of the SAP uses beamforming to provide spatial ports for assignments to the plurality of users.
Read the whole patent
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 July 2, 2003 and granted October 29, 2019. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 2, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 2, 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.