Planning, optimization and operation of access and Ethernet optical networks for the provisioning of high-speed symmetrical services

• Autores: Rafael Sánchez Fuentes
• Directores de la Tesis: David Larrabeiti López (dir. tes.), José Alberto Hernández Gutiérrez (dir. tes.)
• Lectura: En la Universidad Carlos III de Madrid ( España ) en 2016
• Idioma: español
• Tribunal Calificador de la Tesis: Pedro Reviriego Vasallo (presid.), Manuel Urueña Pascual (secret.), Victor López Alvarez (voc.)
• Programa de doctorado: Programa de Doctorado en Ingeniería Telemática por la Universidad Carlos III de Madrid
• Materias:
  • Matemáticas
    • Investigación operativa
      • Planificación
  • Ciencias tecnológicas
    • Tecnología de las telecomunicaciones
• Enlaces
  • Tesis en acceso abierto en: e-Archivo
• Resumen

  • Today more than ever before, service providers are under enormous pressure to reduce operational costs while increasing business effectiveness. This often means optimizing current infrastructure investments and implementing novel networking technologies. Customer demand is quickly evolving away from traditional one-way content consumption to a much more participative social network model that demands high capacity bidirectional information flows. Ethernet-based networking technology has become ubiquitous in both the enterprise and home broadband arenas. The combination of simplicity and rigorous specification has permitted a degree of integration and commoditization that other networking technologies could not achieve. On the other hand, optical fiber has become the technology of choice in the medium and long term in the access and metro networks, thanks to its speed, reach and future-proof. While it seems clear that fiber is the right technology to support emerging services in the access network, there are a large variety of technologies available in the industry. This thesis reviews the main technologies available today for access and metro networks, and proposes contributions about network planning and optimization. Firstly, main innovations added to Ethernet are analyzed, namely improvements related to scalability, OAM functionality and forwarding capabilities, in order to permit Ethernet to assume a much larger role in metro networks. After that, some of the Ethernet enhancements previously discussed are applied to access networks. Specifically, physical and link-layer information are combined in order to effectively set management procedures for passive optical networks (PON). We propose an Integrated Troubleshooting Box (ITB) and show its applicability in a number of realistic troubleshooting scenarios, including failure situations involving either the feeder fibre or one of its branches. Secondly, this thesis explores fiber access protocols available in the industry to support high-speed symmetrical services. It compares four Next-Generation PON protocols from a performance and economical perspective in a real scenario, and analyzes under which conditions 1 Gb/s symmetrical services can operate by selecting the right parameters of quality of service, oversubscription and split ratio. Finally, a novel access network planning method is proposed to provide 1Gb/s symmetrical services in a mixed environment of business and residential services. In this case, a converged cost-optimized access network is implemented, using Integer Linear Programming, which guarantees respective service level specifications in a real scenario. Main Thesis' publications: C1: Sanchez, R., Raptis, L., Vaxevanakis, K., “Ethernet as a Carrier Grade Technology: Developments and Innovations”, IEEE Communications Magazine, vol. 46, no.9, pp. 88-94, September 2008, ISSN: 0163-6804 C2: Sanchez, R., Hernandez, J.A., Larrabeiti, D., “Troubleshooting PON Networks Effectively with Carrier-Grade Ethernet and WDM-PON”, IEEE Communications Magazine, Vol. 52, no. 2, pp. 7-13, Feb 2014, ISSN: 0163-6804 C3: Hernandez, J.A., Sanchez, R., Larrabeiti, D., “Oversubscription Dimensioning of Next-Generation PONs with Different Service Levels”, Submitted to the IEEE Communications Letters C4: Sanchez, R., Hernandez, J.A., Montalvo, J., Larrabeiti, D., “Provisioning 1 Gb/s Symmetrical Services with Next-Generation Passive Optical Network (NG-PON) Technologies”, IEEE Communications Magazine, Vol. 54, no. 2, Feb 2016, ISSN: 0163-6804 C5: Sanchez, R., Hernandez, J.A., Larrabeiti, D., “Network Planning for Dual Residential-Business Exploitation of Next-Generation Passive Optical Networks to Provide Symmetrical 1 Gb/s Services”. Accepted for publication in the IEEE/OSA Journal of Optical Communications and Networking