Invention Grant
- Patent Title: Technique for connection attempt handling in a circuit switched fallback situation
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Application No.: US14840348Application Date: 2015-08-31
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Publication No.: US09781762B2Publication Date: 2017-10-03
- Inventor: Ralf Keller , Joerg Ewert , Karl-Peter Ranke
- Applicant: Telefonaktiebolaget L M Ericsson (publ)
- Applicant Address: SE Stockholm
- Assignee: Telefonaktiebolaget LM Ericsson (publ)
- Current Assignee: Telefonaktiebolaget LM Ericsson (publ)
- Current Assignee Address: SE Stockholm
- Agency: Coats & Bennett, PLLC
- Priority: EP11001510 20110223; WOPCT/EP2011/002557 20110523
- Main IPC: H04W4/00
- IPC: H04W4/00 ; H04W76/02 ; H04W36/00 ; H04W60/04

Abstract:
A technique for handling mobile terminating connection attempts for a mobile terminal for which a change of an association from a first routing node to a second routing node is accompanied by a Circuit Switched (CS) fallback is described. In one exemplary embodiment, a method may be performed by a Circuit Switched Fallback Interworking Function (CSFB-IWF) for handling mobile terminating connection attempts for a mobile terminal for which a change of an association from the CSFB-IWF to a Mobile Switching Center (MSC) is accompanied by a Circuit Switched Fallback (CSFB). The method may include receiving a mobile terminating connection attempt to the mobile terminal. In response to receiving the mobile terminating connection attempt, the method may include paging the mobile terminal using a Mobility Management Entity (MME). In response to paging the mobile terminal, the method may include triggering the mobile terminal to initiate a CSFB procedure. Further, the method may include determining an identity of the MSC based on a message received by the CSFB-IWF from the MSC. Also, the method may include transmitting, to the MSC, a second mobile terminating connection attempt for a CS connection to the mobile terminal.
Public/Granted literature
- US20150373771A1 TECHNIQUE FOR CONNECTION ATTEMPT HANDLING IN A CIRCUIT SWITCHED FALLBACK SITUATION Public/Granted day:2015-12-24
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