“A Scalability Perspective for Wireless Caching Networks”
Li (Liliane) Wang, Professor
Thursday, Feb. 14, 5:00 pm
In the era of 5G, wireless communications promise to support many services such as mobile social platforms, AR/VR, and IoT, etc. 5G technologies provide higher data rate, lower latency, and massive connectivity by defining Enhanced Mobile Broadband (eMBB), Ultra Reliable Low Latency Communications (URLLC), and massive Machine Type of Communication (mMTC) as special applications. However, limited wireless resources and capacity continue to fall behind wireless traffic needs. Presently, the capability of user devices has risen substantially, whose joint communication, caching, and computing capabilities can alleviate the heavy burden in conventional wireless networks. To this end, this seminar will first introduce the state-of-art of 5G and existing challenges. We shall then focus on scalable device-to-device (D2D) based wireless caching networks. We present a novel policy for D2D caching that facilitates content sensing and delivery using full duplex (FD) communications,to enable user devices to sense and deliver content over an extended geographic range, where more aggregate cache units are available, thereby circumventing both limited communication range and limited storage of individual devices. Applying stochastic geometry in network modeling, we analyze the performance of the new network architecture. We also apply matching theory, combinatorial optimization, and fractional Programming to achieve collaborative communication, caching, and computing, in order to meet the rising needs of diversified applications in 5G scenarios.
Dr. Li Wang received her Ph.D. in 2009 from Beijing University of Post and Telecommunications (BUPT). She is now a full professor in the School of Electronic Engineering, BUPT, where she heads the High-Performance Computing and Networking Laboratory. She is also with the Key Laboratory of the Universal Wireless Communications, Ministry of Education, P.R. China. She held a visiting researcher position in the School of Electrical and Computer Engineering at Georgia Tech, Atlanta, USA from December 2013 to January 2015 and in the Department of Electrical and Engineering at Chalmers University of Technology, Gothenburg, Sweden, from August 2015 to November 2015.
Her current research interests include wireless communications, secure communications, cooperative networking, and distributed networking and storage. She has published two books in Springer for device-to-device communications and physical layer security, respectively. She is serving as an Editor for IEEE Transactions on Vehicular Technology, an Editor for IEEE Transactions on Green Communications and Networking, and an Associate Editor for IEEE Access. Dr. Wang is the Symposium Chair of IEEE ICC 2019 on Cognitive Radio and Networks Symposium, and chairs the special interest group (SIG) on Social Behavior Driven Cognitive Radio Networks for IEEE Technical Committee on Cognitive Networks. She also served as technical program committees of multiple IEEE conferences, including IEEE GLOBECOM, ICC, WCNC, and VTC over the years. Dr. Wang received the 2013 Beijing Young Elite Faculty for Higher Education Award, the best paper award at ICCTA 2011, best paper runner up from WASA 2015, best paper award from IEEE ICCC 2017, demo award from IEEE ICCC 2018, and best paper award from IEEE GLOBECOM 2018. She has also been selected by the Beijing Nova Program (2018) and young Talent Lift Project of Beijing Association for Science and Technology (2019).