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QoS Guaranteed Handover Scheme for Global Roaming in Heterogeneous Proxy Mobile IPv6 Networks  

Go, Kwang-Sub (KISIT)
Kim, Soo-Hyun (KISIT)
Kim, Mi-Sun (Anti-Corruption & Civil Rights Commission)
Mun, Young-Song (Soongsil University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.49, no.1, 2012 , pp. 1-10 More about this Journal
Abstract
Mobility and quality of service (QoS) are becoming the more important issues in wireless communications. The traditional Internet service is expanding into new access media and applications. Since wireless communication services are accompanied by frequent handovers at remote sites, scalable and fast handover has become a prerequisite for ubiquitous communication. In this paper, the differentiated service (Diffserv) model is deployed in heterogeneous proxy mobile IPv6 (PMIPv6) networks to satisfy the QoS guaranteed service and fast handover requirements. The operational procedures for QoS guaranteed global roaming are presented. In addition, QoS management and handover cost evaluation schemes based on a mobile host's movement scope are proposed. This paper analyzes the reduction in handover delay in a network-based localized mobility management framework. We propose and analyze a PMIPv6 optimized with a global mobile access gateway (G-MAG), which is a network-based entity, to further improve the handover performance in terms of handover delay while maintaining minimal signaling overhead in the air interface among converged heterogeneous wireless networks. The handover signaling procedures with host-based MIPv6 are compared with network-based proxy MIPv6 (PMIPv6) and fast PMIPv6 assisted by G-MAG to show how much handover delay reduction can be achieved. Analytical results show that the handover delay is significantly reduced.
Keywords
QoS; PMIPv6; handover; global roaming; cost evaluation;
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