@article{3035390,
    title = "5G-XHaul: A Novel Wireless-Optical SDN Transport Network to Support Joint 5G Backhaul and Fronthaul Services",
    author = "Camps-Mur, D. and Gutiérrez, J. and Grass, E. and Tzanakaki, A. and Flegkas, P. and Choumas, K. and Giatsios, D. and Beldachi, A.F. and Diallo, T. and Zou, J. and Legg, P. and Bartelt, J. and Chaudhary, J.K. and Betzler, A. and Aleixendri, J.J. and González, R. and Simeonidou, D.",
    journal = "IEEE Communications Magazine",
    year = "2019",
    volume = "57",
    number = "7",
    pages = "99-105",
    publisher = "Institute of Electrical and Electronics Engineers, Inc. (IEEE)",
    issn = "0163-6804, 1558-1896",
    doi = "10.1109/MCOM.2019.1800836",
    keywords = "Antennas;  Computer architecture;  Integrated optics;  Microprocessor chips;  Mobile telecommunication systems;  Network architecture;  Optical communication;  Passive networks;  Passive optical networks;  Queueing networks;  Wavelength division multiplexing, Antenna element;  Carrier bandwidth;  Legacy interfaces;  Mobile communications;  Optical network units;  Optical technology;  Transport networks;  Wireless-optical, 5G mobile communication systems",
    abstract = "The increased carrier bandwidth and the number of antenna elements expected in 5G networks require a redesign of the traditional IP-based backhaul and CPRI-based fronthaul interfaces used in 4G networks. We envision future mobile networks to encompass these legacy interfaces together with novel 5G RAN functional splits. In this scenario, a consistent transport network architecture able to jointly support backhaul and 4G/5G fronthaul interfaces is of paramount importance. In this article we present 5G-XHaul, a novel transport network architecture featuring wireless and optical technologies and a multi-technology software defined control plane, which is able to jointly support backhaul and fronthaul services. We have deployed and validated the 5G-XHaul architecture in a city-wide testbed in Bristol. © 2019 IEEE."
}