Improvement of Line Availability of 300-GHz-band Wireless Fronthaul Links during Local Downpour by Switching Routing in Mesh Network

In this paper, we investigated the improvement of the connection ratio between RAUs and central station during a local downpour for 300 GHz band wireless fronthaul link by switching routing in mesh network. When we set one central station in mesh network, the connection ratio between the RAUs and the central station during the local downpour was 40 %. In case of two central station in mesh network, we clustered RAUs and the clusters with the second and third highest number of RAUs are selected. By setting the RAUs with highest betweeness centrality and cut points for each selected cluster as the central station, the connection ratio between RAUs and the central stations could be improved to 77.2 % during the local downpour.