"Co-Located Protocol Aided Performance Enhancements in Bluetooth/WiFi based-IoT Networks"
Channel: UCIBrenICS
Date: 2023-05-09

Saewoong Bahk
Professor of Electrical and Computer Engineering
Seoul National University

Abstract:
Recently, manufacturers put IoT protocol stacks (e.g., Wi-Fi and Bluetooth) into a single IoT device due to cost and form-factor issues. Specifically, for IoT station (STA), it is common that multiple IoT protocols are co-located thanks to the distribution of combo chips. On the other hand, for IoT access point (AP), to serve as Wi-Fi AP and gateway of low-power IoT protocols simultaneously, such IoT protocol stacks are collocated in recent IoT APs. In this talk, I focus on improving the network performance by exploiting co-located IoT protocol stacks. I consider the following two enhancements: (i) BLESS: BLE-aided swift Wi-Fi scanning and (ii) B-Hop: Wi-Fi beacon-aware dynamic BLE frequency hopping. Performance improvements have been verified through testbed experiments on COTS (commercial-off-the-shelf) devices and extensive simulations.

Speaker Bio:
Prof. Bahk received his B.S. and M.S. degrees in electrical engineering from Seoul National University in 1984 and 1986 respectively, and the Ph.D. Degree from the University of Pennsylvania in 1991. From 1991 through 1994 he was with AT&T Bell Laboratories as a member of technical staff. In 1994, he joined Seoul National University (SNU) and currently serves as a professor. He was TPC chair of the IEEE Vehicular Technology Conference (VTC) Spring 2014. He served as general chair of IEEE WCNC 2020 (Wireless Communication and Networking Conference), IEEE DySPAN 2018 (Dynamic Spectrum Access and Networks), and IEEE ICCE (Int Conf. on Communications and Electronics) in 2020. He is an editor for the IEEE Network Magazine and IEEE Trans. on Vehicular Technology. He was co-Editor-in-Chief (EIC) for the Journal of Communications and Networks on the editorial boards of IEEE Transactions on Wireless Communications and Computer Networks Journal. He served as Director of IEEE ComSoc Asia-Pacific Board and the Institute of New Media and Communications at SNU from 2008 to 2010, president of KICS (Korean Institute of Communications and Information Sciences) in 2020. He is a member of the National Academy of Engineering of Korea (NAEK).