Professor Osamu Takyu of Shinshu University, Nagano, Japan

This presentation reports on a monitoring system integrating UAVs and LPWA, as well as a resource allocation method for Local 5G operating in an autonomous frequency-sharing environment. By leveraging UAV mobility to approach wireless devices holding necessary observation data, the system establishes high capacity communication—utilizing high received signal power—to capture high-quality video. Incorporating hierarchical modulation into the LPWA link that supports UAV movement enables context-aware information reception. We present the concept of this integrated UAV-LPWA system and report evaluation results regarding changes in hierarchical modulation demodulation performance. Next, we established a resource allocation method to address co-frequency sharing issues in Local 5G, a private wireless system. Focusing on a beamforming setup where beams track the terminal's direction, we developed a time resource allocation method that determines beamforming direction based on terminal movement predictions. This approach makes it possible to suppress interference caused to adjacent cells to below average levels over a specific time interval. We report on the effectiveness of this method, demonstrated through both hardware-based verification and computer simulations using Local 5G. This work was supported by the Ministry of Internal Affairs and Communications, Japan (FORWARD, JPMI260410001) and this work has been conducted under the contract R&D on the deployment of mobile communication systems in the millimeter wave band and other frequencies” (JPJ000254) made with the Ministry of Internal Affairs and Communications of Japan.

Biography:

Osamu Takyu received the B.E. degree in electrical engineering from Tokyo University of Science, Chiba, Japan, in 2002, and the M.E. and Ph.D. degrees in open and environmental systems from Keio University, Yokohama, Japan, in 2003 and 2006, respectively. From 2003 to 2007, he was a Research Associate with the Department of Information and Computer Science, Keio University. From 2004 to 2005, he was a Visiting Scholar with the School of Electrical and Information Engineering, The University of Sydney, Sydney, NSW, Australia. From 2007 to 2011, he was an Assistant Professor with the Department of Electrical Engineering, Tokyo University of Science, Tokyo, Japan. From 2011 to 2013, he was an Assistant Professor with the Department of Electrical and Computer Engineering, Shinshu University, Nagano, Japan, where he was an Associate Professor, from 2013 to 2023, and has been a Professor, since 2023. His current research interests include wireless communication systems and distributed wireless communication technology. He was a recipient of the 2018 Best Paper Award in Smart Radio from the IEICE Technical Committee on SR and the 2024 Research Encouragement Award from the Strategic Information and Communications Research and Development Promotion Programme (SCOPE), Ministry of Internal Affairs and Communications, Japan.

Address:Japan