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The Scientific World Journal
Volume 2014 (2014), Article ID 415415, 11 pages
Research Article

A Comparative Study of Routing Protocols of Heterogeneous Wireless Sensor Networks

1Department of Information & Communication Systems, Hohai University, Changzhou 213022, China
2Changzhou Key Laboratory of Photovoltaic System Integration and Production Equipment Technology, Changzhou 213022, China
3Institute of Telecommunications, University of Beira Interior, 6201-001 Covilhã, Portugal
4Department of Computer and Communication Engineering, Northeastern University, Qinhuangdao 066004, China

Received 1 April 2014; Accepted 13 May 2014; Published 22 June 2014

Academic Editor: Jaime Lloret

Copyright © 2014 Guangjie Han et al. 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.


Recently, heterogeneous wireless sensor network (HWSN) routing protocols have drawn more and more attention. Various HWSN routing protocols have been proposed to improve the performance of HWSNs. Among these protocols, hierarchical HWSN routing protocols can improve the performance of the network significantly. In this paper, we will evaluate three hierarchical HWSN protocols proposed recently—EDFCM, MCR, and EEPCA—together with two previous classical routing protocols—LEACH and SEP. We mainly focus on the round of the first node dies (also called the stable period) and the number of packets sent to sink, which is an important aspect to evaluate the monitoring ability of a protocol. We conduct a lot of experiments and simulations on Matlab to analyze the performance of the five routing protocols.