IoT with Multi Connectivity

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 this talk, we consider IoT multihop connectivity, focusing on a protocol architecture that enables IPv6 routing protocol for low power and lossy networks (RPL). Until now, IoT multihop researches have concentrated on RPL over IEEE 802.15.4. In this talk, we compare this conventional approach with the one that runs RPL on top of Bluetooth Low Energy (BLE). In our approach to RPL over BLE, we propose to use both of advertising and data channels of BLE to create synergistic effects between RPL and BLE to jointly achieve high energy efficiency and reliable multi-hop routing. For doing so, we design an adaptation layer between BLE and RPL which tightly couples RPL and BLE operations together. We implement the proposed adaptation layer in a Linux kernel to realize RPL over BLE and compare its performance with that of RPL over IEEE 802.15.4 on a multi-hop testbed network. Our research shows that RPL over BLE is a promising approach which can increase the utility and impact of BLE across different application domains.

Bio: Saewoong Bahk is a professor at Seoul National University (SNU). He served as Director for the Institute of New Media and Communications during 2009-2011. Prior to joining SNU, he was with AT&T Bell Laboratories as a member of technical staff from 1991 to 1994 where he had worked on network management.

He received the best paper awards from Telecom Review in 2012, ICOIN in 2004, ICTC in 2013, and JCCI in 2009, respectively. He also received KICS Haedong Scholar Award in 2012. He has been leading many industrial projects on 3G/4G/5G and IoT connectivity supported by Samsung Electronics, LG Electronics, SK Telecom, etc and published more than 200 technical papers and holds 72 patents.

He was TPC Chair for IEEE VTC-Spring 2014 and general chair of JCCI 2015. He was an area editor for Computer Networks Journal (COMNET). And he is co-EIC of IEEE/KICS Journal of Communications and Networks (JCN) and an editor for IEEE Transactions on Wireless Communications (TWireless). He is an IEEE senior member and a member of Whos Who Professional in Science and Engineering.

He received B.S. and M.S. degrees in Electrical Engineering from Seoul National University (SNU) in 1984 and 1986, respectively, and the Ph.D. degree from the University of Pennsylvania in 1991.