Abstract:Metropolitan optical networks are undergoing major transformations to continue being able to provide services that meet the requirements of the applications of the future. The arrival of the 5G will expand the possibilities for offering IoT applications, autonomous vehicles, and smart cities services while imposing strong pressure on the physical infrastructure currently implemented, as well as on static traffic engineering techniques that do not respond in an agile way to the dynamic and heterogeneous nature … Show more
“…Extant MAN models from worldwide metropolitan areas are available and will greatly contribute to 5G/B5G deployment [6]- [8]. Most topologies of MANs are mesh-type and ring-type [9], and the mesh-type is currently more common than ring-type [10]. Moreover, as shown in Fig.…”
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.
“…Extant MAN models from worldwide metropolitan areas are available and will greatly contribute to 5G/B5G deployment [6]- [8]. Most topologies of MANs are mesh-type and ring-type [9], and the mesh-type is currently more common than ring-type [10]. Moreover, as shown in Fig.…”
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.
“…A metro é um dos segmentos de rede com considerável variedade em termos de presenc ¸a de granularidades de tráfego de dados, variando de menos de 1 Gb/s [Shen et al 2018] até 800 Gb/s [Routray et al 2020], com diferentes modos de comunicac ¸ão [Cugini et al 2016] e perfis de tráfego [Uzunidis et al 2018, Streit et al 2021, Braga et al 2021. Além disso, a metro sofre com um impacto significativo no tráfego gerado em outros segmentos de rede, como redes de núcleo (backbone de Internet) e redes de acesso, por intermediar a comunicac ¸ão [Thyagaturu et al 2016, Rottondi et al 2013, de Sousa and Drummond 2022.…”
As redes ópticas metropolitanas (MON) estão passando por grandes transformações para continuar a oferecer serviços que atendam aos requisitos das aplicações do futuro. O tráfego dessas aplicações apresenta um comportamento diferente em cada horário do dia e em cada área específica da rede. As soluções agnósticas desse contexto não consideram tal distribuição desigual de tráfego. Este trabalho apresenta uma solução de roteamento e alocação de espectro ciente da área no contexto de redes ópticas metropolitanas elásticas (MEON). Tal proposta alcança o dobro de redução do bloqueio de largura de banda na rede como um todo, e pelo menos 1% de redução nas áreas compreensivas (CA) e residenciais (RA) existentes na metro.
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