An Elastic Optical Network-based Architecture for the 5G Fronthaul

  • Mateus Riva
  • Henrique Donâncio
  • Felipe R. Almeida
  • Gustavo B. Figueiredo
  • Rodrigo I. Tinini
  • Roberto M. Cesar Jr.
  • Daniel M. Batista


In 5G networks, the traffic demands are expected to increase significantly. To deal with this problem, many research efforts focus on TWDMPON for the fronthaul. However, TWDM-PON suffers from the issue of wasted bandwidth when a demand is smaller than the channel. In order to avoid this inefficiency, we propose an OFDM-PON supported architecture for the Cloud Radio Access Network (C-RAN) topology to implement the technology of elastic optical networks into C-RAN. Experiments show that OFDM-PON allows for improved usage of the bandwidth (between 145% and 218% improvement), similar average wait time for requests (average difference below 7%), and similar request loss (average difference below 2%) in comparison to TWDM.
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RIVA, Mateus; DONÂNCIO, Henrique; ALMEIDA, Felipe R.; FIGUEIREDO, Gustavo B.; TININI, Rodrigo I.; JR., Roberto M. Cesar; BATISTA, Daniel M.. An Elastic Optical Network-based Architecture for the 5G Fronthaul. In: SIMPÓSIO BRASILEIRO DE REDES DE COMPUTADORES E SISTEMAS DISTRIBUÍDOS (SBRC) , 2018 Anais do XXXVI Simpósio Brasileiro de Redes de Computadores e Sistemas Distribuídos. Porto Alegre: Sociedade Brasileira de Computação, may 2018 . ISSN 2177-9384.