Trends in Wireless Access Technologies toward Expansion of Broadband and Ubiquitous Services

摘要

This article introduces wireless technologies being studied in the Wireless Access Systems Project at NTT Access Network Service Systems Laboratories. To achieve flexible access networks that meet various needs or demands, the coexistence of optical fiber and wireless systems is indispensable. It also mentions electromagnetic wave propagation technology and technology for increasing frequency utilization as core technologies of wireless systems and eco-related activities that began in 2010.