Design,implementation and experimental evaluation of an end-to-end vertical handover scheme on NCTUns simulator |
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| Affiliation: | 1. COMSATS Institute of Information Technology, Islamabad 44000, Pakistan;2. Faculty of Engg., Dalhousie University, Halifax, NS B3J 4R2, Canada;3. CAMS, Dept. of Biomedical Technology, KSU, Riyadh 11633, Saudi Arabia;4. Cameron Library, University of Alberta, Edmonton, AB T6G 2J8, Canada;1. COMSATS Institute of Information Technology, Islamabad 44000, Pakistan;2. CAMS, Department of Biomedical Technology, KSU, Riyadh 11633, Saudi Arabia;3. PMAS Arid Agriculture University, Rawalpindi 4600, Pakistan;1. Department of Electrical and Electronics Engineering, Taraba State University, Jalingo, Nigeria;2. Department of Electrical Engineering, Ahmadu Bello University, Zaria, Kaduna State, Nigeria;3. Department of Biomedical Engineering, University of Ilorin, Ilorin, Nigeria;4. State Key Laboratory of Reliability and Intelligence of Electrical Equipment, Hebei University of Technology, Tianjin 300130, China;5. School of Microelectronics, Tianjin University, Tianjin, China;6. Department of Electrical and Communication Engineering, UAE University, Al Ain, United Arab Emirates;1. Department of Electrical Engineering Department, COMSATS University Islamabad, Islamabad Campus, Pakistan;2. Center for Advanced Studies in Telecom. (CAST), COMSATS University Islamabad, Islamabad Campus, Pakistan;1. COMSATS Institute of Information Technology, Islamabad, Pakistan;2. Mohammad Ali Jinnah University, Islamabad, Pakistan;1. Department of Electrical and Computer Engineering, COMSATS University, Islamabad, Pakistan;2. Department of Computer Science, COMSATS University, Islamabad, Pakistan |
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| Abstract: | This paper presents the simulation study of “Host based autonomous Mobile Address Translation” using NCTUns simulator. It is a network layer, end-to-end vertical handover solution, based upon modification of “Mobile IP with address Translation”. Vertical handover approaches generally require new network elements, a new layer in TCP/IP stack, or fixing a protocol at a particular layer. To enhance handover experience, recent approaches focus on reducing signalling, localizing the registration, creating hierarchies, using proxy, preparing handover in advance, predicting target network, or exploiting multicasting and path extension techniques. These approaches, however, demand change in the network infrastructure to support mobility and limit the scope of mobility. Despite end-to-end signalling, the Host based autonomous Mobile Address Translation scheme ensures minimum service disruption and distinctly allows global mobility of the mobile node without requiring any modification in the network. We have simulated the mobility of a multi-interface mobile node in a heterogeneous network environment composed of WiFi (IEEE802.11a, IEEE802.11b) and WiMAX (IEEE802.16e) access networks. Performance of the scheme is evaluated taking into account wide range of end-to-end delays between mobile node and the correspondent node, various speeds of the mobile node and different packet loss rates of the network. Based on our detailed simulation study, it has been observed that this scheme offers reduced service disruption time, packet loss and packet latency. The service disruption time is found to be significantly low (typically in the range of 10 ms) compared to that of Mobile IP (which is in the order of 100 ms); this makes this new scheme perfectly suitable for real time applications. Low service disruption time consequently reduces the packet loss by manyfold and the packet latency remains unaffected during and after handover due to translation of address at the source. The results suggest that this protocol is a viable vertical handover solution due to its simplicity, scalability, low overhead and ready deployability. |
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