High density cellular mobile radio communications
CA 1204165 A · Owner: American Telephone And Telegraph Company · Inventors: Lien, Robert L.; Macdonald, Verne H.; Huensch, George D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract, In a cellular mobile telecommunication system a, method and apparatus for controlling the process of locating a mobile unit from the cell sites. When a mobile unit goes beyond the radio range of its associated controlled cell site, that cell site sends a message to nearby cell sites to measure and report the strength of the received signal from that mobile on each of their directional antennas and to report radio channel availability. These reports are returned to the controlling cell site which compares the received signal strength measurements against stored thresholds. The controlling cell site generates and transmits to the mobile telecommunications switching office (MTSO) a …
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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
- Granted May 6, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 6, 2003.
- 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.