Document Details

Document Type : Thesis 
Document Title :
WiMAX-UMTS Vertical Handover for Seamless Mobility in NGWN
التسليم الرأسي لشبكتي الWiMAX-UMTS لدعم التنقل المرن في الجيل التالي من الشبكات اللاسلكية
 
Subject : Faculty of Computing and Information Technology- Computer Science 
Document Language : Arabic 
Abstract : Nowadays, the current trend is to integrate mobile WiMAX with 3G networks in order to meet the growing demand for high-speed connectivity and ubiquitous coverage. While mobile WiMAX is the representative of 4G but lacks the core network infrastructure, 3G (UMTS) infrastructure is being widely deployed. Thus, integrating the two networks will make the best use of advantages of both technologies and eliminate their stand-alone defects. However, design and implementation of seamless integration architecture for heterogeneous networks is a challenging task, as it requires comprehensive effort to provide mobile user with seamless experience while switching between access networks. Several studies reported in literature addressed the problems of integration and vertical handover (VHO) between the two networks. However, none of these approaches addressed the problem of high signaling cost while maintaining seamless mobility and QoS, which may have a negative effect on the network infrastructure and Mobile Station (MS) battery consumption. In order to realize seamless VHO with QoS support, an IMS-based integration architecture for mobile WiMAX and UMTS is proposed with VHO mechanism using cross-layer MIP-SIP protocols to provide transparent mobility and QoS support. This cross-layer scheme focuses on reducing signaling cost on user terminal and IMS network by introducing a new IMS entity (ECLM) which can realize information appended in MIP messages and translate it into SIP message (and vise versa) in order to perform IMS registration on behalf of MS. Detailed analysis and evaluation of the proposed solution is presented and validated. The numerical results indicated that cross-layer MIP-SIP can provide the best VHO performance compared to other IMS-based solutions in terms of latency and signaling overhead while maintaining QoS and seamless mobility. 
Supervisor : Dr.Nadine Akkari 
Thesis Type : Master Thesis 
Publishing Year : 1433 AH
2012 AD 
Added Date : Monday, September 3, 2012 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
ندى محمد العمريAl-Amri, Nada MOHAMMADResearcherMaster 

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