Indian Journal of Science and Technology
Year: 2015, Volume: 8, Issue: 23, Pages: 1-20
Shidrokh Goudarzi 1* , Wan Haslina Hassan1 , Mohammad Hossein Anisi 2 and Ahmad Soleymani 3
1 Communication System and Network (iKohza) Research Group, Malaysia Japan International Institute of Technology (MJIIT), University Teknologi Malaysia; [email protected], [email protected]
2 Department of Computer System and Technology, Faculty of Computer Science and Information Technology, University of Malaya, Kuala Lumpur – 50603, Malaysia; [email protected]
3 Department of Computing, Faculty of Computing, University of Teknologi Malaysia, Johor Bahru, Malaysia; [email protected]
Background/Objectives: Heterogeneous wireless networks are converging towards an all-IP network as part of the socalled next-generation network. In this paradigm, different access technologies need to be interconnected; thus, vertical handovers or vertical handoffs are necessary for seamless mobility. In this paper, we prepare a review of existing vertical handover decision-making mechanisms that aim to provide ubiquitous connectivity to mobile users. Methods/Statistical Analysis: To offer a systematic comparison, we categorize these vertical handover mechanisms based on TCP/IP layers. Subsequently, we evaluate several vertical handover decision-making mechanisms in the literature and compare them according to their advantages and limitations. Results/Findings: The paper compares the algorithms based on the network selection methods, flexibility and complexity of the technologies used. We find that the deployment of crosslayer architecture as a handover trigger and then performs handover accordingly with multi-path transmission can reduce packet losses around the handover. Conclusion/Application: The cross layer design approach seems to be a best solution for attaining seamless service continuity in order to facilitate seamless connectivity.
Keywords: Cross Layer, Decision-Making Algorithm, Heterogeneous Wireless Networks, TCP/IP Layers, Vertical Handover, Vertical Handover Metric
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