NDLI: A VPN-driven Infrastructure for Vertical Handovers

Content Provider	IEEE Xplore Digital Library
Author	Evers, F. Seitz, J.
Copyright Year	2006
Description	Author affiliation: Tech. Univ., Ilmenau (Evers, F.; Seitz, J.)
Abstract	Mobile PCs are equipped with a multitude of network access technologies, such as IEEE 802.11 WLAN, GPRS over GSM or wire-based Ethernet. If the user wants to access the Internet he has to choose one of the technologies and has to use it for the whole duration of the session. But this is problematic when the user wants to be mobile and has to change network access technologies. It was quite problematic so far to start a session using Ethernet (rarr laptop at work) and then perform a seamless vertical handover to WLAN when the user becomes mobile. The protocols used in the Internet were not designed with mobility in mind. Some proposals were made to circumvent these problems, for example by using enhancements like Mobile IP or IPv6, but a solution that could easily be applied to a multitude of different " real-world systems" has not been presented yet. We developed a method that implements a data transfer mechanism that is able to handle the problems caused by mobility and vertical handovers. Our first approach made use of the universal proxy protocol SOCKSv5 (RFC 1928) to relay all data to a central proxy server using a handover-capable transport mechanism. Here, "socksified" applications were needed, which was not feasible in all possible scenarios [Evers, 2004]. This paper presents our latest enhancement that makes use of a virtual private network (VPN) in combination with our handover capable transport mechanism. This offers a full VPN- based network access to all applications running on the mobile node and is able to do all handover related work transparently. VPN-clients are available for all relevant operating systems. The handover management software was implemented using C++ and runs on GNU/Linux, Mac OS and Microsoft Windows. The architecture offers full mobility to the end user without the need of modifications to the applications or the operating system itself.
Starting Page	1
Ending Page	4
File Size	852742
Page Count	4
File Format	PDF
ISBN	9781424400027
DOI	10.1109/SARNOF.2006.4534787
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-03-27
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Wireless LAN Ethernet networks Internet Virtual private networks Personal communication networks Ground penetrating radar GSM Portable computers Access protocols Proposals
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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