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Enhanced Handover Decision Algorithm in Heterogeneous Wireless Network.

Radhwan Mohamed Abdullah1, Zuriati Ahmad Zukarnain2

  • 1Department of Wireless and Communication Technology, Faculty of Computer Science and Information Technolog, University Putra Malaysia, Serdang 43400, Malaysia. radwanmas@yahoo.com.

Sensors (Basel, Switzerland)
|July 15, 2017
PubMed
Summary
This summary is machine-generated.

This study introduces a multi-criteria algorithm for enhanced vertical handover in heterogeneous wireless networks, improving upon traditional single-criterion methods. The proposed network priority algorithm significantly reduces handover failures and interruptions for better network performance.

Keywords:
decision algorithmhandover operationmobility managementperformance analysisvertical handover

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Area of Science:

  • Computer Science
  • Electrical Engineering
  • Telecommunications

Background:

  • Traditional vertical handover relies solely on Received Signal Strength (RSS), leading to service interruptions and network load imbalance.
  • Heterogeneous wireless networks (LTE, WiMAX, WLAN) require sophisticated handover strategies for efficient data transfer.
  • Existing single-criterion approaches are insufficient for managing complex network environments.

Purpose of the Study:

  • To propose and evaluate an enhanced vertical handover decision algorithm using multiple criteria.
  • To compare the performance of different priority-based handover decision algorithms (equal, mobile, network).
  • To address limitations of traditional RSS-based vertical handover in heterogeneous networks.

Main Methods:

  • Developed a multi-criteria vertical handover decision algorithm integrating Long-Term Evolution (LTE), Worldwide Interoperability for Microwave Access (WiMAX), and Wireless Local Area Network (WLAN).
  • Implemented and simulated three decision algorithms: equal priority, mobile priority, and network priority.
  • Validated simulation results using an analytical model.

Main Results:

  • The proposed multi-criteria algorithms significantly outperform the traditional single-criterion approach in reducing handover number probability and handover failure probability.
  • The network priority algorithm demonstrated superior performance compared to equal and mobile priority algorithms.
  • Simulation outcomes were consistent with the analytical model, confirming algorithm effectiveness.

Conclusions:

  • The enhanced multi-criteria vertical handover algorithm effectively improves network performance in heterogeneous wireless environments.
  • The network priority strategy is the most effective for minimizing handover issues and optimizing resource utilization.
  • This research provides a robust solution for efficient vertical handovers, crucial for seamless mobile data transfer.