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Sensors 2017, 17(7), 1626; https://doi.org/10.3390/s17071626

Enhanced Handover Decision Algorithm in Heterogeneous Wireless Network

Department of Wireless and Communication Technology, Faculty of Computer Science and Information Technolog, University Putra Malaysia, Serdang 43400, Malaysia
These authors contributed equally to this work.
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Received: 25 May 2017 / Revised: 23 June 2017 / Accepted: 29 June 2017 / Published: 14 July 2017
(This article belongs to the Section Sensor Networks)
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Abstract

Transferring a huge amount of data between different network locations over the network links depends on the network’s traffic capacity and data rate. Traditionally, a mobile device may be moved to achieve the operations of vertical handover, considering only one criterion, that is the Received Signal Strength (RSS). The use of a single criterion may cause service interruption, an unbalanced network load and an inefficient vertical handover. In this paper, we propose an enhanced vertical handover decision algorithm based on multiple criteria in the heterogeneous wireless network. The algorithm consists of three technology interfaces: Long-Term Evolution (LTE), Worldwide interoperability for Microwave Access (WiMAX) and Wireless Local Area Network (WLAN). It also employs three types of vertical handover decision algorithms: equal priority, mobile priority and network priority. The simulation results illustrate that the three types of decision algorithms outperform the traditional network decision algorithm in terms of handover number probability and the handover failure probability. In addition, it is noticed that the network priority handover decision algorithm produces better results compared to the equal priority and the mobile priority handover decision algorithm. Finally, the simulation results are validated by the analytical model. View Full-Text
Keywords: vertical handover; decision algorithm; handover operation; mobility management; performance analysis vertical handover; decision algorithm; handover operation; mobility management; performance analysis
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Abdullah, R.M.; Zukarnain, Z.A. Enhanced Handover Decision Algorithm in Heterogeneous Wireless Network. Sensors 2017, 17, 1626.

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