Alocação Eficiente de vBBUs e VPONs em uma Arquitetura Cloud-Fog RAN Virtualizada sobre TWDM-PON

• Rodrigo Izidoro Tinini USP
• Matias R. P. dos Santos UFBA
• Carlos Kamienski UFABC
• Gustavo Bittencourt Figueiredo UFBA
• Daniel Macêdo Batista USP

DOI: https://doi.org/10.5753/sbrc.2021.16710

Abstract

To promote power efficiency and low latency in 5G networks, operators are adopting Cloud Radio Access Networks (CRAN) with a TWDM-PON fronthaul. Although reducing power consumption, CRAN imposes heavy loads on the fronthaul, which could increase latency and reduce network coverage. So, in this paper we consider an architecture called Cloud-Fog RAN (CF-RAN) that uses fog nodes to alleviate the demands on the fronthaul. We propose a graphbased heuristics to plan a dynamic activation of the fog nodes and to dimension the bandwidth on the TWDM-POM fronthaul. Experiments show that our proposal benchmarks an ILP model, mitigates blocking probability, and increases power-efficiency in 58% in comparison to baseline heuristics.

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