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Seamless and Secure Design for Subsequent Handover in Mobile WiMAX Networks

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Handover performance plays a crucial role in ensuring the quality of real-time applications in WiMAX networks. In general, the total delay associated with the handover process can be divided into three category: i) link layer handover delay, ii) IP layer handover delay, iii) Security sub-layer handover delay, research shows that a large portion of the delay related to handover are actually comes from user authentication and network entry and re-entry, real-time applications such as VoIP and video streaming .require a minimum interruption for a suitable service, sadly the existing design of the handover scheme could not provide seamless safe connection, therefore the use of such application will be unlikely, in this paper we introduce an efficient design that can provide fast and secure communication especially over the subsequent handover, we named it FSSHO for short, in our proposal we consider the use the of a pre-authentication scheme and prior backhaul inter-communication, our design generate a minimum delay that is more than suitable for real-time application. From our analytical comparison and simulation result we can see that our FSSHO approach achieves 72% improve over the standard and 38% improve over the enhanced scheme cited in the paper.
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EAP-pre-authentication; Subsequent Handover; Mobile WiMAX; NS-2

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