Privacy preserving context transfer schemes for 4G networks

  • Authors:

  • Iosif Terzis;Georgios Kambourakis;Giorgos Karopoulos;Costas Lambrinoudakis

  • Affiliations:

  • Laboratory of Information and Communication Systems Security, Department of Information and Communication Systems Engineering, University of the Aegean, Karlovassi, Samos GR-83200, Greece;Laboratory of Information and Communication Systems Security, Department of Information and Communication Systems Engineering, University of the Aegean, Karlovassi, Samos GR-83200, Greece;Laboratory of Information and Communication Systems Security, Department of Information and Communication Systems Engineering, University of the Aegean, Karlovassi, Samos GR-83200, Greece;Department of Digital Systems, University of Piraeus, GR-18534, Greece

  • Venue:
  • Wireless Communications & Mobile Computing
  • Year:
  • 2011

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Abstract

In the near future, wireless heterogeneous networks are expected to interconnect in an all-IP architecture. An open issue towards this direction is the uninterrupted continuation of the received services during handover between networks employing different access technologies. In this context, Mobile IP (MIP) is a protocol that allows fast and secure handovers. However, MIP per se cannot handle all the issues that surface during handovers in certain services, and more specifically, when the information of the current state of a service requires re-establishment on the new subnet without having to repeat the entire protocol exchange with the mobile host from the outset. A number of methods have been proposed to solve the aforementioned problem, commonly referred to as secure context transfer. However, while such methods do succeed in minimising the disruption caused by security-related delays, it seems that little has been done to protect the end-users' privacy as well. In this paper, a number of privacy enhanced (PE) context transfer schemes are presented. The first two of them have been introduced in a previous work of ours while the other two are novel. All schemes are analysed in terms of message exchange and evaluated through simulations. The performance of our schemes is compared with the standard ones proposed by the Seamoby work group (WG). The results demonstrate that the proposed schemes are very efficient in terms of application handover times, while at the same time guarantee the privacy of the end-user. Copyright © 2010 John Wiley & Sons, Ltd. (In this paper, a number of privacy enhanced (PE) context transfer schemes are presented. The performance of our schemes is compared with the standard ones proposed by the Seamoby work group (WG). The results demonstrate that the proposed schemes are very efficient in terms of application handover times, while at the same time guarantee the privacy of the end-user.)