Invited Talk, "Unlicensed Spectrum LTE and 5G Technology," at Muroran Institute of Technology, Muroran, Japan, Feb. 8th, 2019. (Hosted by Prof. Mianxiong Dong)
Invited Talk, "Unlicensed Spectrum LTE and 5G Technology," at University of Science and Technology Beijing, Beijing, China, August 7th, 2018. (Hosted by Prof. Haijun Zhang)
Invited Talk, "Robust and Energy Efficient MAC/PHY Layer Strategies of Wi-Fi," at Shanghi Jiao Tong University, Shanghi, China, Nov. 23rd, 2015. (Hosted by Prof. Xudong Wang)
Invited Talk, "Robust and Energy Efficient MAC/PHY Layer Strategies of Wi-Fi," at WINLAB, Rutgers, The State University of New Jersey, NJ, USA, Aug. 3rd, 2015 (Hosted by Prof. Ivan Seskar)
Invited Talk, "WiFi Could be Much More," at KTH (Royal Institute of Technology), Sweden, Oct. 24th, 2014. (Hosted by Prof. Jens Zander)
Invited Talk, "E$PA: Energy, Usage ($), and Performance-Aware LTE-WiFi Adaptive Activation Scheme for Smartphones," at University of Sydney, Australia, June 10th, 2014. (Hosted by Dr. Zihuai Lin)
Panel Moderator, "Beyond 5G," at SAIT Future Tech Forum, Suwon, Korea, Oct. 11, 2013.
Panel Moderator, "M2M/D2D Toward Beyond 4G Wireless," at IEEE SECON 2012, Seoul, Korea, June 20, 2012.
Invited Talk, "IEEE 802.11 WLAN: Today and Tomorrow," at National Ciao Tung University, Hsinchu, Taiwan, Feb. 24, 2012. (Hosted by Prof. Li-Chun Wang)
Invited Talk, "Interference Management and Load Balancing in Two-Tier Cellular Networks," at National Taiwan University, Taipei, Taiwan, Feb. 23, 2012. (Hosted by Prof. Wanjiun Liao and Prof. Chun-Ting Chou)
Invited Talk, "QoS-Aware Load Indicators for Intelligent Cell Selection," at Univ. of Palermo and Univ. of Rama, Italy, April 2010. (Hosted by Prof. Ilenia Tinnirello and Prof. Giuseppe Bianchi)
Invited Talk, "Wireless & Mobile Communications: History & Trends," at Palo Alto Forum, Palo Alto, CA, USA, April 2010.
Invited Talk, "MAC-Aware Link Quality Metric and Routing Strategy for Wireless Mesh Networking / A Performance Analysis of Live Mobile WiMAX Network in Seoul," at Korean Day at MSR Asia, Beijing, China, May 2009.
Invited Talk, "Power Amplifier Characteristic-Aware Energy-Efficient Transmission Strategy and Performance Measurement over Mobile WiMAX Network," at Huawei Wireless Symposium, Shanghai, China, Dec. 2008.
"IEEE 802.11 WLAN: Trends and My Research," at RTCL Forum, University of Michigan, USA, Oct. 14, 2006.
Panel Presentation on "The Evolution of Wi-Fi and its Role in the Future Mobile/Wireless Networks," at ACM WMASH 2006, Sept. 29, 2006.
Invited Talk, "Idle Mode Operation for IEEE 802.11 WLANs," at Qualcomm, Inc., San Diego, USA, July 22, 2006. (Hosted by Dr. Sai Shankar N)
Invited Talk, "Deep sleep mode for IEEE 802.11 WLAN," at CARUT/Yonsei-Nokia Workshop on Wireless Systems, Seoul, Korea, March 13, 2006.
Invited Talk, "Analysis and Solutions of Network Access Failure in IEEE 802.11 WLANs," at Docomo Euro-Labs, Munich, Germany, August 30, 2005. (Hosted by Dr. Anand Prasad )
Invited Talk, "Analysis and Solutions of Network Access Failure in IEEE 802.11 WLANs," at HP Labs, Palo Alto, CA, USA, July 25, 2005. (Hosted by Dr. Sung-Ju Lee)
Invited Talk, "Achieving Higher-Throughput in IEEE 802.11 WLAN," at University of Rome "Tor Vergata", Rome, Italy, June 17, 2005. (Hosted by Prof. Giuseppe Bianchi)
Panel presentation on "The Future Wireless Network: Revolution vs. Evolution?," at IEEE WoWMoM 2005, June 16, 2005.
Tutorial on "Achieving QoS, Security, and Mobility in IEEE 802.11 WLANs and Future Directions," with Anand Prasad at IEEE ICC 2005, Seoul, May 16, 2005.
Tutorial on "Evolution of IEEE 802.11 Wireless LANs: QoS, Security, Mobility, and Emerging Standard Perspectives," with Anand Balachandran at ACM MOBICOM 2004, Philadelphia, Sept. 27, 2004.
Invited Talk, "QoS Provisioning in IEEE 802.11 WLANs," at Workshop On Mobile, Wireless, and Sensor Network (MobWiser), Singapore, March 5-6, 2004.
Invited Talk, "Improving IEEE 802.11 WLAN: QoS and Throughput Perspectives" at UC Davis, CA, USA, January 19, 2004. (Hosted by Prof. Mihaela van der Schaar)
Invited Talk, "Improving the 802.11 WLAN: QoS and Throughput Perspectives" at HP Labs, Palo Alto, CA, USA, July 25, 2003. (Hosted by Dr. Sung-Ju Lee)