MODELING THE TOPOLOGY OF SDH NETWORKS

A. Santiago, J. P. Cárdenas, M. L. Mouronte (), V. Feliu and R. M. Benito ()
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A. Santiago: Grupo de Sistemas Complejos - Universidad Politécnica de Madrid, E.T.S.I. Agrónomos, 28040 Madrid, Spain
J. P. Cárdenas: Grupo de Sistemas Complejos - Universidad Politécnica de Madrid, E.T.S.I. Agrónomos, 28040 Madrid, Spain
M. L. Mouronte: Telefónica I+D (TID), c/Emilio Vargas 6, 28043, Madrid, Spain
V. Feliu: Telefónica I+D (TID), c/Emilio Vargas 6, 28043, Madrid, Spain
R. M. Benito: Grupo de Sistemas Complejos - Universidad Politécnica de Madrid, E.T.S.I. Agrónomos, 28040 Madrid, Spain

International Journal of Modern Physics C (IJMPC), 2008, vol. 19, issue 12, 1809-1820

Abstract: SDH (Synchronous Digital Hierarchy) is the standard technology for the information transmission in broadband optical networks. Unlike the Internet, SDH networks are strictly planned; rings, meshes, stars, or tree-branches topologies are designed to connect their basic elements. In spite of that, we have found that the SDH network operated by Telefónica in Spain shares remarkable topological properties with other real complex networks empirically analyzed, such as the worldwide web network. In particular, we have found power-law scaling in the degree distribution(P(k) ~ k-γ)and properties of small world networks. Considering real planning directives that take into account geographical and technological variables, we propose anad hoccomputational model that reproduces the aforementioned topological traits observed in the Spanish SDH network.

Keywords: SDH; optical networks; power-law scaling; small world; complex networks (search for similar items in EconPapers)
Date: 2008
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DOI: 10.1142/S0129183108013369

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