Skip to main content
MSU CSE Colloquium Series 2014-2015: Yao Liang Title:  Challenges and Opportunities for Environmental Wireless Sensor Networks

Dr. Yao Liang
Professor at Department of Computer and Information Science,
Purdue University School of Science,
Indiana University Purdue University Indianapolis (IUPUI)

Time: September 26th 2014, 3:30pm
Location: EB 3105


Wireless sensor networks (WSNs) are fundamentally changing today’s practice of numerous scientific and engineering endeavors by enabling continuous monitoring and sensing physical variables of interest at unprecedented high spatial densities and long time durations. This has significantly impacted such varied fields as environmental sciences, ecosystems, hydrology, water resources, natural hazards, accurate agriculture, and smart building. Most environmental monitoring WSNs are deployed in harsh or even hostile environments such as mountainous areas, hilly watersheds, forests, volcano areas, and oceans, and thus the replacement of battery for sensor nodes is usually impossible or difficult. Yet, WSNs are growing rapidly in both size and complexity, making it increasingly critical to monitor the WSN structure and dynamics and identify any internal problems using indirect measurements obtained at the WSN sink(s). In this talk, I will first discuss about the unique challenges of WSN routing topology tomography/inference because of the severe resource constraints (e.g., battery power, bandwidth, memory size, and CPU capacity) of tiny sensor nodes and wireless channel dynamics, as well as the understanding of WSN energy profile in real-world deployments. I will then share my group’s work in addressing these challenges with our novel approaches, and present our results using a real-world WSN testbed.


Yao Liang received his B.S. degree in Computer Engineering and M.S. degree in Computer Science from Xi’an Jiaotong University, Xi’an, China. He received his Ph.D. degree in Computer Science from Clemson University, Clemson, USA, in 1997.

He is currently a Professor in the Department of Computer and Information Science, Purdue University School of Science, Indiana University Purdue University Indianapolis (IUPUI), USA. His research interests include wireless sensor networks, multimedia networking, adaptive network control and management, cyberinfrastructure, quality of service, data management and integration, data mining, data fusion, machine learning, neural networks, hydro-informatics, and distributed systems. His research projects have been funded by NSF, NASA, DOT and NOAA. Prior to joining IUPUI, he was on the faculty of Department of Electrical and Computer Engineering at Virginia Tech, USA. He also had extensive industrial R&D experiences as a Technical Staff Member in Alcatel USA. Dr. Liang has published numerous papers on various prestigious journals and international conferences, and received two US patents. Dr. Liang is a Senior Member of IEEE, and a Member of ACM. He is a co-author of the work “Application of wireless sensor networks for environmental monitoring” which has received the Outstanding Student Paper Award from American Geophysical Union, 2009. He is a recipient of the University Trustees Teaching Award in 2011.


Dr. Guoliang Xing