Reducing unnecessary communication with a home location register in a cellular system
CA 2334284 A1 · Owner: Telefonaktiebolaget Lm Ericsson · Inventors: Wikstrom, Claes; Lindgren, Magnus
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for reducing communications with and signalling to and from, an HLR , (204) is disclosed for local or MSC-originated calls (118). When a subscriber registers (114) with the HLR (204), the complete profile for that subscriber is transferred (116) to the VLR (207) associated with the MSC (206) (or MSC/WOS) involved. When a call (118) to the subscriber is originated in the MSC (206), the VLR (207) associated with that MSC (206) is checked (102) to determine if the subscriber's location information is already maintained in the VLR (207). If so, the MSC (206) can page (122) and route the call to the subscriber's mobile phone via (222) the base station transmitter (210 212, 214) …
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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 May 21, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 21, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 21, 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.
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.