Invention Grant
- Patent Title: Optimization of handovers to untrusted non-3GPP networks
- Patent Title (中): 优化切换到不可信非3GPP网络
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Application No.: US13063165Application Date: 2009-09-23
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Publication No.: US08964695B2Publication Date: 2015-02-24
- Inventor: Jens Bachmann , Genadi Velev , Shinkichi Ikeda , Jun Hirano
- Applicant: Jens Bachmann , Genadi Velev , Shinkichi Ikeda , Jun Hirano
- Applicant Address: US CA Torrance
- Assignee: Panasonic Intellectual Property Corporation of America
- Current Assignee: Panasonic Intellectual Property Corporation of America
- Current Assignee Address: US CA Torrance
- Agency: Dickinson Wright PLLC
- Priority: EP08016714 20080923
- International Application: PCT/EP2009/006882 WO 20090923
- International Announcement: WO2010/034483 WO 20100401
- Main IPC: H04W4/00
- IPC: H04W4/00 ; H04W36/00 ; H04W12/08 ; H04L29/06

Abstract:
The invention relates to a method for ensuring IP session continuity upon a handover of a mobile node to a non-3GPP network, wherein an ongoing IP session of the mobile node goes via a packet data network gateway. For non-3GPP networks it is necessary to discover a security gateway and to then establish the corresponding tunnels to the ePDG to form the new data path; a security tunnel between the mobile node and the security gateway, and an IP tunnel between the packet data network gateway and the security gateway. In order to prepare the handover to possible non-3GPP accesses, the two tunnels are pre-established, however maintained deactivated until their use is actually needed. Accordingly, when handing over to the non-3GPP network, the IP session may be continued without any significant interruption by activating the already established tunnels.
Public/Granted literature
- US20110216743A1 OPTIMIZATION OF HANDOVERS TO UNTRUSTED NON-3GPP NETWORKS Public/Granted day:2011-09-08
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