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Design Strategies for Hierarchical Wireless Sensor Networks

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  • Tue, 04/25/2017 - 11:00am - 12:00pm

A wireless sensor network (WSN) is an interconnection of battery-powered wireless sensor nodes. Each sensor node measures some physical attributes from the deployment environment, and wirelessly transmits the data towards a central receiver, known as a base station. Each sensor node is resource constrained, in terms of energy supply, processing capability, size of memory and storage, as well as bandwidth. It is important to design WSNs in such a way that optimizes the resource utilization. A Hierarchical architecture for the WSN has attracted considerable attention in the past few years. In a hierarchical architecture, sensor nodes are organized in clusters, and in each cluster, one node is assigned the role of a cluster head. Cluster heads receive data from the sensor nodes and communicate to the base station, either directly, or by using multi-hop communication. Recently, relay nodes, provisioned with higher initial energy and communication capabilities has been proposed to act as cluster heads in hierarchical WSNs. The major design issues for such networks are i) to find a suitable placement of the relay nodes within the network, ii) to assign sensor nodes to clusters in an energy efficient manner, and iii) to compute a routing scheme for the relay nodes such that the network lifetime is maximized. In this seminar, some design strategies for a hierarchical, heterogeneous WSN will be discussed. Furthermore, WSNs have recently attracted considerable attention for monitoring applications in safety critical industries like nuclear power plants. Such a deployment environment presents unique challenges to the design of WSNs. Result of some investigation with WSNs in such an industrial environment will also be presented.

Dr. Ataul Bari received his BCS, MSc and Ph.D. degrees, all in Computer Science, from the University of Windsor, Windsor, Ontario, Canada. He is now working as a Research Engineer at the Department of Electrical and Computer Engineering in the University of Western Ontario, London, Ontario, Canada.

Dr. Bari has been awarded several provincial and federal level scholarships during the course of his graduate studies, including NSERC PGD-D; NSERC CGS-M and OGS. Dr. Bari's research interests include wireless sensor networks (WSNs), particularly those used in industrial settings. He is a member of the editorial boards in several reputed journals. He has also served as a TPC member in several international conference organizing committees including IEEE INFOCOM, GLOBECOM and ICC. His current research focus is in application of wireless sensor networks for industrial plant and equipment condition monitoring, process fault diagnosis, and remote monitoring of industrial environments. His other research interests include optical networks, cellular networks and bioinformatics.

Margaret Garabon
5192533000 ext.3714