Metropolitan Area Network Model Design Using Regional Railways Information for Beyond 5G Research

Abstract

To accelerate research on Beyond 5G (B5G) technologies in Japan, we propose an algorithm that designs mesh-type metropolitan area network (MAN) models based on a priori Japanese regional railway information, because ground-truth communication network information is unavailable. Instead, we use the information of regional railways, which is expected to express the necessary geometric structure of our metropolitan cities while remaining strongly correlated with their population densities and demographic variations. We provide an additional compression algorithm for use in reducing a small-scale network model from the original MAN model designed using the proposed algorithm. Two Tokyo MAN models are created, and we provide day and night variants for each while highlighting the number of passengers alighting/boarding at each station and the respective population densities. The validity of the proposed algorithm is verified through comparisons with the Japan Photonic Network model and another model designed using the communication network information, which is not ground-truth. Comparison results show that our proposed algorithm is effective for designing MAN models and that our result provides a valid Tokyo MAN model.

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“…3). The metro network is the Tokyo23 covering an urban area up to tens of kilometers in diameter [25]. It consists of 43 100-Gbps bi-directional links and 23 nodes (1-23), with each node located at each ward office building in the Tokyo metropolitan area.…”

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“…4.2 Extended example on a medium topology: Tokyo MAN Fig. 2 shows the 23-node MAN topology for Tokyo [18] for testing our algorithm. In this detailed examination, given the extensive scale and intricate nature of the network topology, our analysis will be concentrated on a select number of routing paths rather than the entire network.…”