Patent Yard Sign in
Expired Canadian patentCanada

Retrieving cell information in an overlaid circuit switched and packet switched wireless telecommunication network

CA 2356761 C · Owner: Telefonaktiebolaget Lm Ericsson · Inventors: Mazur, Sara; Thrysin, Gunnar

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

Open the CIPO record

Abstract From the Canadian patent

A method of obtaining cell specific information for a dual-mode mobile station (MS) operating in an overlaid network operating on different frequency bandwidths and time slot structures such as a combined D-AMPS and EDGE described in the ETSI Enhanced Data Rates for GSM Evolution (EDGE) specification. The combined networks operating on 30 kHz and 200 kHz respectively having a combined circuit switched and packet switched capability. An MS camping in packet mode is able to perform cell selection/reselection on a particular network by scanning and reading the appropriate control channels of the associated network. For example in a , first aspect of the invention, the MS periodically …

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 December 10, 1999 and granted February 1, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 10, 2019.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 10, 2021.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 10, 1999
GrantedFebruary 1, 2011
Term endedDecember 10, 2019
Patent numberCA 2356761 C
Classification (IPC)H04W92/02 +1 more

Timeline

Timeline From CIPO dates

2000200220042006200820102012201420162018Application filedDec 10, 1999Patent grantedFeb 1, 2011Term endedDec 10, 2019

Sources & verification

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