Dr. Omar Alfandi
Position:
Research Assistant
Phone:
+49 (551) 39-17 20 28
Office:
1.116
Email:
Homepage
Research Projects
Publications
2008
Performance Evaluation of PANA Pre-Authentication and PANA Context Transfer ,
Omar Alfandi , Henrik Brosenne , Patryk Chamuczynski , Dieter Hogrefe , Constantin Werner , in Proceedings of the Fourth international Conference on Wireless and Mobile Communications (ICWMC, July 27 -- August 01, 2008). IEEE Computer Society,
(Best Paper Award), August 2008.
Performance Study of PANA Pre-authentication for Interdomain Handover ,
Omar Alfandi , Henrik Brosenne , Patryk Chamuczynski , Dieter Hogrefe , Constantin Werner , The Fourth International Conference on Networking and Services (ICNS 2008), Gosier, Guadeloupe,
March 2008.
Read abstract
To provide seamless mobility to the wireless user, a
continuous connection to the Internet is required while moving from one administration domain to another. To enable continuous connectivity, one prerequisite is the incorporation of seamless handover. The make-before-break approach facilitates seamless handover by means of executing an authentication to a new domain simultaneously while maintaining connection to current domain. The connection is only terminated after the handover to the new domain is successfully completed.
However, the duration of the authentication is critical for
the handover process because if the mobile nodes move very
fast the remaining amount of time of connection to the current domain can become very limited. Therefore, it is a vital issue for seamless mobility to study the authentication performance of a pre-authentication framework.
In this paper we model an authentication infrastructure
and consider a scenario in which a high number of nodes
handover to a new administration domain. The simulation of the authentication process shows the relation between authentication performance and traffic intensity. Furthermore we identify some critical points and potential bottlenecks of this pre-authentication approach.
PDF [344.3 kB]
Fast Re-Authentication for Inter-Domain Handover using Context Transfer ,
Omar Alfandi , Henrik Brosenne , Dieter Hogrefe , Constantin Werner , The International Conference on Information Networking 2008 (ICOIN 2008), Busan, Korea,
January 2008.
Read abstract
The exponential growth of wireless mobile systems in recent years has created strong demand to handover between different administration domains. Such movement suffers from limited resources such as limited bandwidth and high latency. Furthermore, authentication is the key factor when providing mobile roaming services, so fast re-authentication is one of the important issues to achieve a short overall handover delay. Therefore, it is important to develop techniques that utilize the available bandwidth efficiently. One way of utilizing the wireless resources efficiently is by transferring the required context that authenticates the user in new visited domain of the running session rather than establishing the connection from scratch. Current approaches only consider a repeated authentication process run for a new visited domain and therefore, can potentially introduce high latency by communicating with authorization services of a home domain. In this paper, we propose a novel way to authenticate a mobile node without the necessity to communicate with the home domain while maintaining a high level of security. We provide an overview of the method, show the improvement to related approaches in terms of message flows and discuss security aspects.
PDF [422.0 kB]
