New Short-range Communication Technologies over Smartphones: Designs and Implementations

Summary of the talk: With the ever-increasing popularity of smartphones in our daily lives, people more and more heavily rely on them to share and spread a wide variety of information. Because of the limitations of traditional short-range communication technologies (e.g., complex network configuration and troublesome authentication process), some new short-range communication technologies over smartphones have been proposed recently. In this talk, I will discuss barcode-based and acoustics-based short-range communication systems over off-the-shelf smartphones. First, we introduce Dolphin, a novel form of real-time acoustics-based dual-channel short-range communication, which uses a speaker and the microphones on smartphones to achieve concurrent audible and hidden communication. By leveraging masking effects of the human auditory system, Dolphin ensures real-time unobtrusive speaker-microphone communication without affecting the primary audio-hearing experience for human users, while, at the same time, it overcomes the main limitations of existing unobtrusive screen-camera links. Then, we introduce RainBar, a new and improved color barcode-based NFC system for achieving lightweight real-time streaming for smartphones, which features a carefully-designed high-capacity barcode layout design to allow flexible frame synchronization and accurate code extraction.

Biography: Short Bio: Qian Wang is a Professor with the School of Computer Science, Wuhan University. He received the B.S. degree from Wuhan University, China, in 2003, the M.S. degree from Shanghai Institute of Microsystem and Information Technology (SIMIT), Chinese Academy of Sciences, China, in 2006, and the Ph.D. degree from Illinois Institute of Technology, USA, in 2012, all in Electrical Engineering. His research interests include wireless network security and privacy, cloud computing security, big data security and privacy, and applied cryptography. Qian is an expert under National “1000 Young Talents Program” of China. He is a recipient of IEEE Asia-Pacific Outstanding Young Researcher Award 2016. He is also a co-recipient of several Best Paper Awards from IEEE ICNP 2011, WAIM 2014, and IEEE TrustCom 2016. He is a Member of the IEEE and a Member of the ACM.