| 研究実績の概要 |
The goal of the project is to develop a framework for smart supermarket based on visible light communications (VLC) technology and the smart-device app. The project has two main achievements. First, it is the design and implementation of the proof of concept of the system that includes (1) VLC-based positioning system, (2) a prototype receiver for smartphone/table mounted on smart cart using a newly developed location identification (ID) exchange protocol to communicate with VLC beacon, and (3) recommendation on framework of cloud-based sale data analysis based on R supporting user shopping experience. Secondly, we study the feasibility of different enabling technologies supporting the smart supermarket environment, including broadband multi-cell multi-user VLC data networks, hybrid VLC-wifi networks, advertisement video streaming over Hypertext Transfer Protocol (HTTP/2) with a special attention to technique to improve the user quality of service and quality of experience, security issues of VLC networks in the context of multiple users. In addition, we also develop a new ultra-sound positing method to improve the accuracy and scalability of VLC-based indoor positioning system.
The result of the project has been disseminated in reputable journals and international conferences. In summary, the result of this 3-year project has been published in eight (08) journal articles and fifteen (15) conference papers. One Japanese patent on the new ultra-sound positing method is also registered as a part of the project result.
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