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IEEE802.21 Assisted Fast Re-Authentication Scheme over GSABA
Abstract
To satisfy customer demand for a high performance “global” mobility service, network operators are facing the need to evolve to a converged “all-IP” centric heterogeneous access infrastructure. However, the integration of such heterogeneous access networks brings major mobility issues. Dynamic service bootstrapping and authorization mechanisms must be in place to efficiently deploy a mobility service, which will allow only legitimate users to access the service. Authentication, access, and accounting based authentication mechanisms like Extensible Authentication Protocol (EAP) incur signalling overheads due to large Round Trip Times (RTTs). As a result, overall handover latency also increases. A fast re-authentication scheme is presented in this chapter, which utilizes IEEE802.21 Media Independent Handover (MIH) services to minimize the EAP authentication process delays and reduce the overall handover latency. In this way, it is shown that the demands mobility places on availability can broadly be met, leaving only the generic issues of Internet availability.
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