Abstract—Sensor networks consist of large number of nodes with limited energy, computation and transmission power. Since these nodes operate in a physically insecure environment, they are vulnerable to different types of attacks such as selective forwarding and sinkhole. These attacks can inject malicious packets by compromising the nodes. Furthermore, previous work on sensor networks mainly considered homogeneous sensor networks where all sensor nodes have the same capabilities. Generally homogeneous sensor networks have poor performance limits and scalability. Hence, the network performance can be improved by deploying heterogeneous sensor networks. However, security mechanism is not explored for mobile nodes with sink mobility in heterogeneous sensor network with limited memory against the above mentioned attacks. In this paper, a secured path redundancy algorithm is attempted to implement in heterogeneous sensor networks by incorporating alternate path scheme in heterogeneous sensor networks with mobile nodes for mobile sinks to defend against sinkhole attacks. The simulation results prove that this algorithm has better network performance in terms of energy consumption, delivery ratio and delay than that of heterogeneous sensor networks in the presence of compromised nodes.

Index Terms—Wireless Sensor Networks; Homogeneous Sensor Networks; Heterogeneous Sensor Networks; Malicious Nodes; Selective forwarding Attacks; Sinkhole Attacks; Mobile Sinks.

P. Samundiswary is with Department of Electronics and Communication Engineering,Sri Manakula Vinayagar Engineering College,Pondicherry-605107, India(email: samundiswary_pdy@yahoo.com)
Padma Priyadarshini and P. Dananjayan are with Department of Electronics and Communication Engineering,Pondicherry Engineering College,Pondicherry-605014, India(pdananjayan@rediffmail.com)

Cite: P. Samundiswary,Padma Priyadarshini and P. Dananjayan, "Detection of Sinkhole Attacks for Mobile Nodes in Heterogeneous Sensor Networks with Mobile Sinks," International  Journal  of  Computer  and  Electrical
Engineering vol. 2, no. 1, pp. 127-133, 2010.