Patent · US Active

Method and apparatuses for maintaining service continuity to a centralization and continuity application server

US9106664B2 · kind B2 · utility

3Cited by

4References

21Claims

0Family size

Assignee

Telefonaktiebolaget LM Ericsson (Publ) · SE

Inventors

Ralf Keller · Würselen, DE
Fredrik Lindholm · Ayacucho, PE
Jian Wang · Beijing, CN

Key dates

Filing date	Aug 28, 2008
Grant date	Aug 11, 2015
Priority date	—
Expiry date	Jul 29, 2030

Classification

Technology area (CPC H)Electricity
CPC primaryH04W80/10
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

A method and apparatus for maintaining service continuity for User Equipment accessing an IP Multimedia Subsystem communication network. A routing identifier is established that identifies a Service Centralization and Continuity Application Server allocated to the User Equipment. The routing identifier is sent to the User Equipment. In the event of disruption to the service between the User Equipment and the Service Centralization and Continuity Application Server, a handover message is sent from the User Equipment via a Circuit Switched access network. The handover message includes the routing identifier, and is then forwarded to the identified Service Centralization and Continuity Application Server. This allows the same Service Centralization and Continuity Application Server to be used after the handover as was used before the handover, thereby providing service continuity.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.