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Expired Canadian patentCanada

Interface, apparatus, and method for communication between a radio equipment control node and a remote radio equipment node in a radio base station

CA 2538845 C · Owner: Splett, Armin · Inventors: Korte, Werner; Sato, Toshifumi; Lagrange, Patrick

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Abstract From the Canadian patent

An interface, apparatus, and method are described for communication between a radio equipment control (REC) node and a radio equipment (RE) node in a radio base station that tranceives information over radio interface using multiple antenna carriers. The REC node is separate from and coupled to the RE node by a transmission link. Both control information and user information are generated for transmission over the transmission link from one of the REC node and the RE node to the other. Many advantageous interface features are described.

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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 September 29, 2004 and granted March 26, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 29, 2024.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 29, 2026.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 29, 2004
GrantedMarch 26, 2013
Term endedSeptember 29, 2024
Patent numberCA 2538845 C
Classification (IPC)H04W92/12 +2 more

Timeline

Timeline From CIPO dates

2005200720092011201320152017201920212023Application filedSep 29, 2004Patent grantedMarch 26, 2013Term endedSep 29, 2024

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.