Faculty of Computer Science
6050 University Avenue
Dalhousie University
Halifax, NS
COMPUTER SCIENCE SEMINAR
Speaker: Dr. Ataul Bari
University of Windsor
Title: Energy Aware Design Strategies for Hierarchical Wireless Sense Networks
Date: Tuesday, July 12, 2011
Time: 11:30 a.m.
Location: Jacob Slonim Conference Room (430), Computer Science
Dalhousie University
6050 University Avenue, Halifax
Abstract:
A sensor network is an interconnection of battery-powered sensor nodes, each equipped with sensor(s), a micro-processor, memory, and a transceiver. The lifetime of a sensor network is over as soon as the batteries of critical nodes are depleted. For scalability and efficient data gathering, a hierarchical architecture has been proposed, where the sensor network is organized into clusters, and in each cluster, one node is assigned the role of the 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 sensor networks. The major issues for such networks are i) to find a suitable placement of the relay nodes within the network, using a minimal number of relay nodes, 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 strategies for the placement of relay nodes, and some energy-aware strategies for the clustering and routing in a hierarchical, heterogeneous, two-tiered sensor network will be presented.
Speaker Bio:
Dr. Ataul Bari obtained his Ph.D. degree in Computer Science from the University of Windsor in 2010. He received his M. Sc. and B.C.S (Hons.) degrees in Computer Science from the University of Windsor, and his B. E. degree in Mechanical Engineering from the University of Rajshahi (Engineering College), Bangladesh. During his undergraduate and graduate studies, Dr. Bari has received several awards and scholarships for academic and research excellence, including the NSERC-CGS, NSERC-PGS, OGS scholarships and the University of Windsor Board of Governor’s medal. Dr. Bari focused on wireless sensor networks during his graduate studies. His other research interests include optical networks, cellular networks and bioinformatics.
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David Langstroth
Room 205, Faculty of Computer Science
Dalhousie University
6050 University Avenue
Halifax, NS
B3H 1W5
tel: 902-494-8087
fax: 902-494-7710
