Method and apparatus for a radio remote repeater in a digital cellular radio communication system
CA 2133111 C · Owner: Hallman, Kenneth Blake · Inventors: Csapo, John; Chen, Brian Cheng-Jean; Hallman, Kenneth Blake
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A digital cellular radio communication system having a remote repeater is provided. The communication system includes a central communication site (106) which transmits and receives signals in a first radio channel assigned according to a cellular communication system channel reuse plan transmits signals to and receives signals from a cellular communication network unit and digitally processes received signals for subsequent transmission in the first radio channel or to the cellular communication network unit. The communication system further includes a remote communication site (124) substantially remotely located from, the central communication site (108) which receives a signal in either …
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 March 18, 1993 and granted February 1, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 18, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 18, 2015.
- 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.