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Genetic Algorithm Based Node Deployment in Hybrid Wireless Sensor Networks

Communications and Network 2013年第4期5卷 273-279页

作者： Omar Banimelhem Moad Mowafi walid aljoby Department of Computer Engineering Jordan University of Science and Technology Irbid Jordan Department of Network Engineering and Security Jordan University of Science and Technology Irbid Jordan

In hybrid wireless sensor networks composed of both static and mobile sensor nodes, the random deployment of stationary nodes may cause coverage holes in the sensing field. Hence, mobile sensor nodes are added after the initial deployment to overcome the coverage holes problem. To achieve optimal coverage, an efficient algorithm should be employed to find the best positions of the additional mobile nodes. This paper presents a genetic algorithm that searches for an optimal or near optimal solution to the coverage holes problem. The proposed algorithm determines the minimum number and the best locations of the mobile nodes that need to be added after the initial deployment of the stationary nodes. The performance of the genetic algorithm was evaluated using several metrics, and the simulation results demonstrated that the proposed algorithm can optimize the network coverage in terms of the overall coverage ratio and the number of additional mobile nodes.

关键词： Target Coverage Node Deployment Genetic Algorithm Wireless Sensor Networks

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C3SM: Information Assurance Based on Cryptographic Checksum with Clustering Security Management Protocol

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Journal of Information Security 2012年第4期3卷 272-280页

作者： Moad Mowafi Lo'ai Tawalbeh walid aljoby Mohammad Al-Rousan Department of Computer Engineering Jordan University of Science and Technology Irbid Jordan Department of Network Engineering and Security Jordan University of Science and Technology Irbid Jordan

Wireless Sensor Networks (WSNs) are resource-constrained networks in which sensor nodes operate in an aggressive and uncontrolled environment and interact with sensitive data. Traffic aggregated by sensor nodes is susceptible to attacks and, due to the nature of WSNs, security mechanisms used in wired networks and other types of wireless networks are not suitable for WSNs. In this paper, we propose a mechanism to assure information security against security attacks and particularly node capturing attacks. We propose a cluster security management protocol, called Cryptographic Checksum Clustering Security Management (C3SM), to provide an efficient decentralized security management for hierarchal networks. In C3SM, every cluster selects dynamically and alternately a node as a cluster security manager (CSM) which distributes a periodic shared secrete key for all nodes in the cluster. The cluster head, then, authenticates identity of the nodes and derive a unique pairwise key for each node in the cluster. C3SM provides sufficient security regardless how many nodes are compromised, and achieves high connectivity with low memory cost and low energy consumption. Compared to existing protocols, our protocol provides stronger resilience against node capture with lower key storage overhead.

关键词： Wireless Sensor Networks Security Message Authentication Code Cryptographic Node Capture Attack

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C3SM: Information Assurance Based on Cryptographic Checksum with Clustering Security Management Protocol

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Journal of Information Security（信息安全） 2012年第4期

作者： Moad Mowafi Lo'ai Tawalbeh walid aljoby Mohammad Al-Rousan

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