The University of Tokyo, Waseda University, Hitachi, and Fujitsu announced on March 26 that they have jointly developed a technology that optimally controls the communication of various IoT devices by combining their respective technologies. It realizes efficient wireless communication in private LTE and local 5G (private mobile communication system), and is useful for data utilization in smart cities and smart factories. This initiative was carried out as “automatic control technology for wireless network virtualization”, which is a technical issue in the research commissioned by the Ministry of Internal Affairs and Communications, “Research and development of basic technology for effective use of radio waves with optimal control type that responds to the increase in IoT devices.” It was. The four organizations brought their respective technologies and conducted demonstration experiments from November 1, 2020 to March 25, 2021. In the utilization of IoT, various data including video, audio, and images are transmitted by wired or wireless networks. In the conventional network virtualization technology, network resources are used for each IoT service, and there is a problem that it is difficult to allocate resources appropriately for the entire network and resources are wasted. This initiative has realized three types of “IoT-oriented network orchestration technology,” “IoT-oriented function orchestration technology,” and “scalable resource pooling automation technology for wireless networks with IoT,” by combining the technologies of each institution. IoT-oriented network orchestration technology looks for duplicate data access from different IoT services and automatically aggregates, distributes, and reduces data in response to network traffic. In the IoT-oriented function orchestration technology, the functions that make up the IoT service are distributed to multiple nodes on the network to reduce the load. The scalable resource pooling automation technology for wireless networks with IoT optimizes the timing of data transfer for multiple IoT services and prevents the occurrence of burst traffic.
Configuration image of the demonstration experiment (top) and results (bottom) In the demonstration experiment, it was confirmed that resource consumption can be suppressed and radio frequency utilization efficiency can be significantly improved. The four organizations are aiming to apply this technology in IoT-related fields such as private LTE and local 5G.