Technique for relocating a serving gateway associated to a user equipment

US8578035B2 · kind B2 · utility

Assignee

• Telefonaktiebolaget LM Ericsson (Publ) · SE

Inventors

• Gyoergy Miklós · Budakalász, HU
• Attila Mihály · Dunakeszi, HU
• Ake Arvidsson · Solna, SE
• Johan Rune · Lidingö, SE

Key dates

• Filing date: Aug 12, 2011
• Grant date: Nov 5, 2013
• Expiry date: Aug 12, 2031

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04W76/22
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

A technique for relocating a Serving Gateway associated to a User Equipment is described. One method implementation of this technique is performed in a Mobility Management Entity, MME, and comprises the steps of a) triggering, from the MME, a relocation of a source SGW to a target SGW by sending a Create Session Request message to the target SGW, b) receiving, from the target SGW, a Create Session Response message including S1 General Packet Radio Service, GPRS, Tunnelling Protocol, GTP, endpoints of the target SGW, c) updating, from the MME to an Evolved NodeB, eNB, an Internet Protocol, IP, address and a Tunnel Endpoint IDentifier, TEID, of the target SGW, and d) sending, from the MME to the source SGW, a Delete Session Request to delete a session.