Method of controlling the operation of a packet switched cdma communication network for controlling the operation of transmitters and receivers
CA 2064980 C · Owner: Oksman, Juhani · Inventors: Chen, Xiao Hua; Oksman, Juhani
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of controlling the operation of a packet switched CDMA telecommunication network for controlling the operation of transmitters and receivers. The terminals of network users (Ui,j) communicate with other terminals (Uj i), via a CDMA channel, and the terminal of each user is assigned a receiver code (ri,j) and a transmitter code (ti,j) used by the terminals for encoding packets to the other terminals of the network. To improve the performance of the network, the terminals sense the channel for the presence of the receiver codes (ri,j) and/or the transmitter codes (ti,j) at the different stages of the connection establishment, and the transmitting terminal (TERi) transmits encoded …
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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 April 2, 1992 and granted May 13, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 2, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 2, 2014.
- 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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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.