Jeongki Kim has been a research engineer of ACS(Advanced Communication Standard) Laboratory at LG Electronics company, since January 2005. He has been researching the PHY&MAC technologies in several Wireless Communication Systems (e.g., Wi-Fi, Wimax, LTE, NR, etc.), developing new standard technologies in those areas, and involving to draft the developed standard technologies in the related specifications. He's currently focusing on developing new Wi-Fi standard technologies and MAC sub-part leader in the Wi-Fi connectivity project, since July 2018. And I'm also IEEE 802.11 TGbe MAC Ad-Hoc chair since September 2019.* IEEE standards delegate activities - 2018.01 ~ Present: IEEE 802.11 Extremely High Throughput (EHT) TIG/SG - 2018.03 ~ Present: IEEE 802.11 bd (Next Generation Vehicles (NGV) SG/TG) - 2016.07 ~ Present: IEEE 802.11 ba (Wake-Up Radio (WUR) SG/TG) - 2013.05 ~ Present: IEEE 802.11 ax (High Efficiency Wireless LAN (HEW) SG/TG) - 2012.09~2015.03: IEEE 802.11ai (Fast Initial Link Setup (FILS) TG) - 2012.03~2013.08: IEEE 802.11ah (Sub1G TG) - 2011.01~2011.11: IEEE 802.16p and IEEE 802.16.1b - 2007.05~2011.03: IEEE 802.16 Task Group m (TGm) Personal e-mail: jkchegal@gmail.com