Handover mechanisms in next generation heterogeneous wireless ...

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CONCLUSIONS AND FUTURE RESEARCH WORK Therefore, the thesis research can be extended to explore the QoS mechanisms for smooth data transfer of seamless handover. QoS context transfer from the source to target systems has been proposed in a tightly coupled interworking architecture. However, this approach is not applicable to a handover from the source to target systems without a trust relationship. In a multi-operator environment, such kind of handover may occur, and will place new challenges because heterogeneous wireless networks may lack necessary mechanisms for negotiating QoS. � Network control over handover across heterogeneous wireless networks: All the solutions proposed in this thesis are based on the assumption that individual mobile users control their handover processes in heterogeneous wireless networks for the clear advantages [123]. However, it may be necessary for network operators to exert control over their network resources to be allocated to a handover. This requirement will become more prominent when network collaboration is widely expected and there is no central party in control. Hence, it will call for a network controlled handover approach. Network controlled handover that relies on communications between the source and target systems is available in homogeneous wireless systems or tightly coupled heterogeneous wireless systems, but will be a challenging issue for handover across heterogeneous wireless systems belonging to multiple network operators. Future work may investigate the network controlled handover mechanisms for such kind of handover. - 162 -
ABBREVIATIONS 3G 3rd Generation Wireless Network 3GPP 3rd Generation Partnership Project 4G 4th Generation Wireless Network AAA Authentication, Authorisation, and Accounting ABC Always Best Connected ADF Advertisement Lifetime ADI Advertisement Interval AKA Authentication Key Agreement Protocol AMF Authentication Management Field AMPS Advanced Mobile Phone Service AN Access Network AP Access Point AR Access Router AR Agent Router AuC Authentication Centre AUTN Authentication Token AV Authentication Vector AVP Attribute Value Pair BS Base Station BSS Basic Service Set CBR Constant Bit Rate CDMA Code Division Multiple Access CIPGW Cellular IP Gateway CK Cipher Key CN Correspondent Node CoA Care-of-Address - 163 -
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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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Chapter 5 TRUST ASSISTED HANDOVER A
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TRUST ASSISTED HANDOVER ALGORITHM F
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Page 123 and 124: Chapter 6 PROXY BASED AUTHENTICATIO
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Page 147 and 148: MULTI-INTERFACE MOBILE MODEL FOR ME
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Page 177 and 178: ABBREVIATIONS LS Location Server MH
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Page 181 and 182: REFERENCES [12] C. Politis, T. Oda,
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