Architekturen für optische Transport- und Zugangsnetze hoher Kapazität

• Research unit: COST
• Project number: C99.0024

Key words (English)

WDM; optical network design; resilience

Research programs (English)

COST-Action 266 - Advanced Infrastructure for Photonic Networks

Short description (English)

See abstract

Further information (English)

Full name of research-institution/enterprise: ETH Zürich Institut für Kommunikationstechnik, Fachgruppe Nachrichtentechnik ETH Zentrum

Partners and International Organizations (English)

A, B, HR, CZ, FIN, F, D,GR, H, IRL, I, N, PL, E, CH, GB

Abstract (English)

Due to the high aggregation of large traffic streams, protection against losses is of central importance. The direct routing of a light path results in a optical path layer (OPL). Efficient protection schemes apply directly to the OPL. A novel, unified integer linear programming (ILP) formulation for shared protection has been developed. For larger networks or in the case where a light path uses the same wavelength throughout the whole network, heuristics are required to solve the problem which reduce the complexity significantly. Planning algorithms for ring-networks with dedicated protection rings (DPRing) and shared protection rings (SPRing) has been investigated. Here, an ILP-approach as well as an iterative ring-identification method has been developed. The impact of uncertainties in the planning-process and the lack of knowledge of the exact traffic pattern on the required capacity has been studied.

References in databases (English)

Swiss Database: COST-DB of the State Secretariat for Education and Research Hallwylstrasse 4 CH-3003 Berne, Switzerland Tel. [phone] Swiss Project-Number: C99.0024