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Expired Canadian patentCanada

Method and apparatus for enhancing signal-to-noise ratio of position location measurements

CA 2602256 C · Owner: Qualcomm Incorporated · Inventors: Soliman, Samir S.; Gaal, Peter

CIPO record

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Abstract From the Canadian patent

For generating and use of a position location reference signal that allows a receiver to receive position location signals from relatively weak signal generators when in the presence of a strong signal source near-far problem. , The position location reference signals from multiple sources can be synchronized to be transmitted within a scheduled time slot during which signal source can configure a transmission that includes a media access control address that corresponds to a value reserved for position location signals. Each signal source also configures the transmission to include a position location reference signal that corresponds to the signal source which is positioned to …

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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 March 27, 2006 and granted April 24, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 27, 2026.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 27, 2006
GrantedApril 24, 2012
Term endedMarch 27, 2026
Patent numberCA 2602256 C
Classification (IPC)H04W64/00 +2 more

Timeline

Timeline From CIPO dates

2007200920112013201520172019202120232025Application filedMarch 27, 2006Patent grantedApril 24, 2012Term endedMarch 27, 2026

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