Title :
Wireless sensor/ad hoc Mesh network
Speaker :
Professor Myung Jong Lee (CUNY)
Time & Place :
4월 2일 (월) 오후 4시 30분 – 5시 30분
301동 520호
Abstract :
This talk will address CUNY’s research and standardization effort with emphasis on the contributions to ZigBee and IEEE 802.15.5 WPAN Mesh, and IETF 6lowpan. Then, the design philosophy of ZigBee protocol architecture and routing will be detailed, focusing on the concept of hybrid routing depending on the resourcefulness of a WPAN device to be followed by pros and cons.
Tree-guided Distributed Link State (TDLS) comes next, a baseline standard in IEEE 802.15.5 WPAN MESH covering automatic addressing, routing. TDLS is specifically designed for resource constrained wireless sensor networks with regards to memory space, link and node failure problem, and to achieving scalability. Performance analysis by NS-2 simulations shows encouraging results. TDLS has been implemented into the 802.15.4 testbed (Cuny Wireless SensorNET) extending a floor at CUNY. CWSNET provides a public, permanent testbed for development and testing of sensor network applications via an intuitive web-based interface.
A live demo will be performed at the end.
Issues of IETF 6lowpan will follow to discuss how to provide IPv6 connectivity in a WSN with resource constrained 802.15.4 devices. Gateway approach in ZigBee deserves some attention here with the notion of convergence and conversion.
Bio :
Dr. Myung Jong Lee received B.S and MS from Seoul National University in Korea and Ph.D degree in electrical engineering from Columbia University, New York,1990. He was on leave to Telcordia and Samsung Advanced Institute of Technology. He is currently a professor at the Dept of Electrical Engineering, City University of New York and the director of SAIT-CUNY Joint Laboratory. His research interests include wireless sensor networks, ad hoc networks, wireless multimedia networking, security, and mobile IP. His researches have been funded by government agencies and leading industries, including, ARL, NSF, ARO, Samsung, Telcordia, AT&T, and Panasonic. He has published over 100 journal and conference papers and 20 U.S and International Patents (granted and pending). Dr. Lee actively participates in international standard organizations (currently the chair of IEEE 802.15.5 TG and Vice Chair of Vice Chair of ZigBee NWK WG). He also contributed NS-2 module for IEEE 802.15.4, a standard NS-2 distribution widely used for wireless sensor network researches. He is the recipient of the best paper award from IEEE CCNC 2005 and CUNY Excellence Performance Award in 1999.