FrA2 – Fronthaul Design

Friday, 21 June 2019, 16:00-17:30, Room 2


Session Chair: Jordi Joan Gimenez (Institut für Rundfunktechnik, Germany)


SDN/NFV 5G Fronthaul Networks Integrating Analog/Digital RoF, Optical Beamforming, Power over Fiber and Optical SDM Technologies

Raul Muñoz (Centre Tecnològic de Telecomunicacions de Catalunya (CTTC/CERCA), Spain); Josep M. Fabrega (Centre Tecnologic de Telecomunicacions de Catalunya, Spain); Marco Capitani (Nextworks, Italy); Simon Rommel (Eindhoven University of Technology, The Netherlands); Gabriel Otero Pérez (Universidad Carlos III de Madrid, Spain); Evangelos Grivas (Eulambia, Greece); Ricard Vilalta (CTTC/CERCA, Spain); Ramon Casellas (Centre Tecnològic de Telecomunicacions de Catalunya (CTTC/CERCA), Spain); Laia Nadal (CTTC, Spain); Ricardo Martinez (Centre Tecnològic de Telecomunicacions de Catalunya (CTTC/CERCA), Spain); Michela Svaluto Moreolo (Centre Tecnològic de Telecomunicacions de Catalunya (CTTC), Spain); Giada Landi (Nextworks, Italy); Idelfonso Tafur Monroy (Eindhoven University of Technology, The Netherlands); Juan Dayron López-Cardona (UC3M, Spain); Carmen Vazquez (Universidad Carlos III Madrid, Spain); David Larrabeiti and David Sanchez Montero (Universidad Carlos III de Madrid, Spain)
This paper presents the novel SDN/NFV 5G fronthaul network scenarios deployed in the blueSPACE project. blueSPACE envisions the upgrade of the fronthaul network to include optical SDM transmission for further increasing the network capacity. One of the novelties is the introduction of ARoF transceivers to reduce the 5G fronthaul bandwidth requirements, in addition to the DRoF solutions that are used for the 4G fronthaul interface and the 3GPP’s NGFI. Moreover, ARoF transceivers enable to develop optical beamforming technologies for beam steering and multi-beam transmission. Finally, power of fiber solutions to remotely feed small cells are also considered.


A 5G C-RAN Architecture for Hot-Spots: OFDM Based Analog IFoF PHY and MAC Layer Design

Charoula Mitsolidou and Christos Vagionas (Aristotle University of Thessaloniki, Greece); Agapi Mesodiakaki (Aristotle University of Thessaloniki (AUTH), Greece); Pavlos Maniotis and Georgios Kalfas (Aristotle University of Thessaloniki, Greece); Chris Roeloffzen, Paul van Dijk and Ruud Oldenbeuving (LioniX International BV, The Netherlands); Amalia N. Miliou and Nikos Pleros (Aristotle University of Thessaloniki, Greece)
Centralized Radio Access Network (C-RAN) comprises one of the main technologies for high capacity and low latency fronthauling in 5G networks. In this paper, we propose and evaluate an optical fronthaul 5G C-RAN architecture that targets to meet the bandwidth, latency and energy requirements of high traffic hot-spot areas. The proposed architecture employs Intermediate-Frequency-over-Fiber (IFoF) signal generation by Photonic Integrated Circuit (PIC) Wavelength Division Multiplexing (WDM) optical transmitters at the Base-Band Unit (BBU), while a novel design of Reconfigurable Optical Add-Drop Multiplexers (ROADMs) is used at the Remote Radio Head (RRH) site. An aggregate capacity up to 96 Gb/s has been reported by employing two WDM links with 4-band Orthogonal Frequency Division Multiplexing (OFDM) 64-QAM 0.5 Gbaud signals, showing error vector magnitude performance below the acceptable 8% limit. The physical layer evaluation of the proposed fronthaul is also extended with the evaluation of the network throughput and mean packet delay latency, using a Medium Transparent-Medium Access Control (MT-MAC) protocol, which employs gated service indicating latencies below 10ms.


5G-PICTURE: A Programmable Multi-Tenant 5G Compute-RAN-Transport Infrastructure

Daniel Camps (i2CAT, Spain); Kostas Katsalis (HUAWEI, Germany); Igor Freire (Federal University of Pará, Brazil); Jesús Gutiérrez (IHP – Leibniz-Institut für Innovative Mikroelektronik, Germany); Nikos Makris (University of Thessaly & CERTH, Greece); Salvatore Pontarelli (National Inter-University Consortium for Telecommunications (CNIT), Italy); Robert Schmidt (EURECOM, France)
Flexibility is a key capability to allow future 5G networks to support varying service offerings over a common infrastructure. 5G-PICTURE investigates the design of programmable compute and transport network infrastructures, able to instantiate third-party 5G connectivity services on demand. This paper introduces the 5G-PICTURE vision on an integrated compute, RAN, and transport architecture, and describes a set of innovative functions in the RAN, Transport and Synchronization domains that 5G-PICTURE has developed to fulfill its vision. Initial evaluation results are presented for the aforementioned functions.


Fronthaul Links Based on Analog Radio over Fiber

Diego Perez-Galacho, Demetrio Sartiano and Salvador Sales (Universitat Politecnica de Valencia, Spain)
Current Information and Communication Technology systems are nowadays close to a ´capacity crunch´ as global IP traffic increases. This problem will be particularly important in the Mobile Fronthaul. This scenario is driving the search for new multiplexing techniques that could solve short-term bandwidth problems and provide a good scalability in the long-term view. Space division multiplexing in the optical domain is currently considered as the best option to provide a new degree of freedom to scale the bandwidth of optical communication systems. On top of using space division multiplexing a further increase in the spectral efficiency of the mobile fronthaul can be achieved using a centralized radio access network based on analog radio over fiber. In this work, we address the experimental demonstration of the transportation of 5G New Radio signals on fronthaul optical links using Analog Radio over Fiber.


Analog Radio-over-Fiber 5G Fronthaul Systems: blueSPACE and 5G-PHOS Projects Convergence

Thiago R Raddo and Simon Rommel (Eindhoven University of Technology, The Netherlands); Christos Vagionas, Georgios Kalfas and Nikos Pleros (Aristotle University of Thessaloniki, Greece); Idelfonso Tafur Monroy (Eindhoven University of Technology, The Netherlands)
The fifth generation (5G) mobile systems can be considered the way to ubiquitous Internet, pervasive computing paradigm, and a revolution in industries like automotive, media and entertainment, and eHealth. New 5G fronthaul systems based on centralized radio access networks will eventually use technology enablers such as reconfigurable optical add-drop multiplexers, space-division multiplexing, ribbon fibers, software-defined networking, multiple-input multiple-output signaling, analog radio-over-fiber signals, and beamforming. In this context, this paper addresses the principal technology enablers of the 5G PPP phase 2 projects blueSPACE and 5G-PHOS and their potential interoperability. The convergence of 5G key-performance indicators (KPIs) along with methodologies and usage scenarios is also addressed. Furthermore, the 2020 European championship is perceived here as a unique opportunity to leverage a 5G pan-European trial platform. The technologies developed in both projects are seen as potential candidates for next generation mobile networks, where ultra-low latency, energy efficiency, and millions of connected devices are major network KPIs requirements.