System and method for positioning a mobile station in a cdma cellular system
CA 2306699 A1 · Owner: Karlsson, Jonas · Inventors: Karlsson, Jonas; Ovesjo, Fredrik
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system and method for improving the accuracy of a location estimation measurement within a telecommunication system is disclosed. During a cessation of transmissions by a local base transceiver system (12) in communication with the mobile station (10), the mobile station (10) communicates with other more , remote base transceiver systems (12A 12B, 12C, 12D) and trilateration and , other distance measuring techniques are employed to calculate the position of the mobile station (10) in relation to those remote base transceiver systems. In another embodiment of the present invention the local base transceiver , system (12) is also used to calculate the position. In still another …
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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 9, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 9, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 9, 2020.
- 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.