Dynamic external home agent assignment in mobile VPN

Yi Wen Liu*, Jyh-Cheng Chen, Li Wei Lin

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

5 Scopus citations


This paper presents the dynamic external Home Agent (x-HA) assignment for mobile Virtual Private Networks (VPNs). The proposed architecture is based on the IPsec-based VPN proposed by the IETF for mobile users. The IETF solution, however, leads to two questions: where should we put the x-HA and how should we trust the x-HA? We propose to assign the x-HA dynamically so the handoff latency and end-to-end latency could be reduced significantly. Based on Diameter Mobile IPv4 application, we also propose a technique such that the x-HA can be associated with the VPN securely. In addition, the registrations with x-HA and internal HA (i-HA) are concurrently accomplished. The proposed technique is implemented in a mobile VPN testbed. Performance analysis based on empirical experiments is discussed.

Original languageEnglish
Pages (from-to)3281-3285
Number of pages5
JournalIEEE Vehicular Technology Conference
Issue number5
StatePublished - 1 Dec 2004
Event2004 IEEE 60th Vehicular Technology Conference, VTC2004-Fall: Wireless Technologies for Global Security - Los Angeles, CA, United States
Duration: 26 Sep 200429 Sep 2004


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