5G R&D Activities for High Capacity Technologies with Ultra High-Density Multi-Band and Multi-Access Layered Cells

Abstract

In this paper, we make a summary report of our 5G R&D activities for "High Capacity Technologies with Ultra High-Density Multi-Band and Multi-Access Layered Cells", funded by the Ministry of Internal Affairs and Communications (MIC) in Japan. This national project consists of three research subjects: "Ultra high-density distributed antenna systems", "Optical access technologies accommodating highly densified small cells" and "Multi-RAT system technologies for multi-band and multi-access layered cells". We describe the research and development result for each subject.