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Future Internet 2015, 7(2), 196-213; doi:10.3390/fi7020196

Self-Optimization of Handover Parameters for Long-Term Evolution with Dual Wireless Mobile Relay Nodes

Graduated School of Global Information and Telecommunication Studies, Waseda University, Bldg. No. 29-7, 1-3-10 Nishwaseda, Tokyo 169-0051, Japan
Present Address: Department of Communications and Computer Engineering, School of Fundamental Science and Engineering, Waseda University, 66 Bldg., 802, 3-14-9 Ookubo, Tokyo 169-0072, Japan.
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Author to whom correspondence should be addressed.
Academic Editor: Andrew Hudson-Smith
Received: 4 March 2015 / Revised: 21 May 2015 / Accepted: 29 May 2015 / Published: 11 June 2015
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Abstract

In recent years, train passengers have been transferring increasing amounts of data using mobile devices. Wireless networks with mobile relay nodes support broadband wireless communications for passengers of such vehicles using backhaul links. However, the mobility management entity reuses the handover of existing user equipment, resulting in the handover of the Long-Term Evolution network being unsuitable for user equipment within the cabins of vehicles traveling at high speed. In this paper, we propose a self-optimizing handover hysteresis scheme with dual mobile relay nodes for wireless networks in high-speed mobile environments. The proposed mechanism tunes the hysteresis and cell individual offset handover parameters based on the velocity of the vehicle and the handover performance indicator, which affects the handover triggering decision and performance. The results of simulations conducted in which the performance of the proposed scheme was compared to that of an existing scheme show that the proposed scheme can reduce the number of radio link failures and service interruptions during handover procedures. View Full-Text
Keywords: self-optimization; handover parameter; mobile relay node; cell individual offset; hysteresis self-optimization; handover parameter; mobile relay node; cell individual offset; hysteresis
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Davaasambuu, B.; Yu, K.; Sato, T. Self-Optimization of Handover Parameters for Long-Term Evolution with Dual Wireless Mobile Relay Nodes. Future Internet 2015, 7, 196-213.

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