CS SEMINAR

IoT Mesh (Zigbee and BLE)

Speaker
Saewoong Bahk, Ph.D.
Professor at ECE, Seoul National University (SNU), Korea


07 Aug 2019 Wednesday, 01:30 PM to 03:30 PM

MR3, COM2-02-26

Abstract:

Internet of Things (IoT) is a technical megatrend in academia and industry that aims to provide Internet connectivity to resource constrained embedded devices deployed over large areas in Low-power and lossy networks (LLNs). To cover large areas by multihop connectivity, IPv6 routing protocol for LLN (RPL) has been standardized. First, this talk considers an adaptive and distributed control mechanism for transmission power and routing topology, PCRPL, to achieve better bandwidth and routing stability in IEEE 802.15.4 networks. We also tackle the load balancing and congestion problem of RPL by proposing a simple queue utilization based RPL (QU-RPL). Second, we design a protocol architecture that enables IPv6 routing protocol for RPL to run on top of Bluetooth Low Energy (BLE), aiming to provide a BLE-based multi-hop IoT network. Our research confirms that RPL over BLE is a promising approach which can increase the utility and impact of BLE across different application domains. We verify all our findings through experimental measurements on a real testbed.


Biodata:

Saewoong Bahk is a professor at Seoul National University (SNU). He served as director of the Institute of New Media and Communications. Prior to joining SNU, he was with AT&T Bell Laboratories as a member of technical staff. He has led many industrial projects on 3G/4G/5G and IoT connectivity supported by Samsung, LG, and others, and published over 200 technical papers and holds more than 100 patents. He is a member of National Academy of Engineering of Korea (NAEK) and president-elect of KICS (Korean Institute of Communications and Information Sciences) for 2020. He is general chair of IEEE WCNC 2020 and an editor of IEEE Network Magazine. He was TPC Chair for IEEE VTC 2014 and general chair of IEEE DySPAN 2018. He was co-Editor-in-Chief of the IEEE/KICS Journal of Communications and Networks (JCN) and on the Editorial Boards of the Computer Networks Journal and IEEE Transactions on Wireless Communications. He received B.S. and M.S. degrees in electrical engineering from SNU, respectively, and a Ph.D. degree from the University of Pennsylvania.