Observatorio de I+D+i UPM

Memorias de investigación
Communications at congresses:
Complexity and Robustness in the Spanish Optical Telecommunication Network
Research Areas
  • Mathematics,
  • Electronic
In this communication we present a study of the topology and robustness of the SDH telecommunication network operated by Telefónica in Spain. SDH (Synchronous Digital Hierarchy) networks transport different traffic types, such as voice, video, multimedia, and data packets (as those generated by IP) over the same fiber wire. Our results showed emergent complexity in all the Spanish provincial networks analyzed, despite being largely dependent on strict planning policies [1,2]. Particularly, we found power-law scaling in the degree distribution and properties of small-world networks, signs of self-organization in the evolution of complex systems. These complex topological properties have been related to the robustness of systems. Thus, complex networks are considered robust against random failures but sensitive to planned attacks in highly connected nodes. Under this perspective, in this work we also present a study of the robustness of the Spanish SDH network by the simulation of direct attacks to those equipments that control the flow of information. We have found that the robustness depends not only on the connectivity of equipments but also on the capacity and type of links associated to those equipments. Consequently we have also observed that the robustness of SDH networks depends on the particular initial design and evolution of each Spanish province.
International Workshop and Conference on Complex Networks and their Applications (NETSCI 09)
Venecia, Italia
Start Date
End Date
From page
To page
International Workshop and Conference on Complex Networks and their Applications
  • Autor: Luis Moyano (Telefónica Investigación y Desarrollo)
  • Autor: Maria Luisa Vargas (Telefónica Investigación y Desarrollo)
  • Autor: Juan Pablo Cárdenas Villalobos (UPM)
  • Autor: Mary Luz Mouronte (Telefónica Investigación y Desarrollo)
  • Autor: Rosa Maria Benito Zafrilla (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Grupo de Sistemas Complejos
  • Departamento: Física y Mecánica Fundamentales y Aplicada a la Ingeniería Agroforestal
S2i 2020 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)