Handover mechanisms in next generation heterogeneous wireless ...

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PROXY BASED AUTHENTICATION LOCALISATION SCHEME FOR HANDOVER deploying the PBAL scheme. With the integration, the PBAL can reuse the cryptographic keys that are used to encrypt and authenticate data exchanged between an AAA server and an AAA proxy [53]. This approach sees a smooth migration into a fast authentication scheme from the current AAA infrastructure. Alternatively, independent AAA proxies can be deployed for providing fast authentication. Considering the dedicated nature of these AAA proxies, a less number of AAA proxies may be required to achieve the same capacity. - 132 -
PROXY BASED AUTHENTICATION LOCALISATION SCHEME FOR HANDOVER 6.6 Conclusion The past studies on fast authentication have focused on handover either within the same network domain, or between two network domains sharing a trust association. To localise an authentication, their proposed solutions require that a secure channel between two points of attachment in a handover should be available for transferring security context information. However, as the coexistence of multiple network operators is anticipated in the NG heterogeneous wireless networks, more and more handover operations may be performed between network domains without a trust association. For such kind of handover, the authentication request is always delivered to the mobile’s home AAA server, because the current fast authentication solutions will not work. The proxy-based authentication localisation scheme PBAL is presented to address fast authentication in a handover taking place between two network domains without a trust association. The proposed PBAL scheme can provide a roaming mobile user with localised authentication in a handover. The PBAL does not require any communications between two points of attachment (sAN and nAN) before, during and after a handover. By relaying authentication authority to a third-party proxy, the PBAL avoids resorting to a mobile user’s home AAA server for identity verification in a handover. As a result, handover signalling delay is greatly reduced in a multi-operator environment. It was proven that the PBAL supports mutual authentication and security protection against some known attacks such as replay attack and network corruption. It provides some additional security features like session key renewal, which makes sure that vulnerable wireless link can be better protected. In the PBAL, both authentication localisation and security enhancement can be conducted in a cost effective manner, since a few round trips are needed. Generally, the PBAL can support fast and localised authentication without compromising security features. - 133 -
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Handover Mechanisms in Next Generat
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ACKNOWLEDGMENT First of all, I woul
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TABLE OF CONTENTS 4.4.2 Power Save
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LIST OF FIGURES LIST OF FIGURES Fig
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LIST OF FIGURES Figure 7.2 A generi
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ABSTRACT New access technologies su
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Chapter 1 INTRODUCTION New access t
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INTRODUCTION becomes available. Han
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INTRODUCTION The above multipliciti
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INTRODUCTION network trust pattern
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INTRODUCTION 1.3 Related Publicatio
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INTRODUCTION TECHNICAL REPORTS XIII
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HANDOVER MANAGEMENT horizontally. H
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HANDOVER MANAGEMENT The objective o
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HANDOVER MANAGEMENT air interface,
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HANDOVER MANAGEMENT proposed archit
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HANDOVER MANAGEMENT Access point (A
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HANDOVER MANAGEMENT users. Moreover
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HANDOVER MANAGEMENT For IEEE 802.11
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HANDOVER MANAGEMENT The two schemes
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HANDOVER MANAGEMENT When a MH is mo
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3.1 Introduction Chapter 3 HANDOVER
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SECURITY FOR HANDOVER ACROSS HETERO
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DYNAMIC NEIGHBOUR TRUST INFORMATION
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Page 93 and 94: Chapter 5 TRUST ASSISTED HANDOVER A
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Page 181 and 182: REFERENCES [12] C. Politis, T. Oda,
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Page 187 and 188: REFERENCES [90] R. Verdone and A. Z
Page 189: REFERENCES [116] K. E. Malki and H.
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