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Analysis and design of survivable telecommunications networks

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2 Author(s)
J. J. Shi ; Ericsson Inc., Richardson, TX, USA ; J. P. Fonseka

The analysis and design of mesh restorable and self-healing ring networks is considered. A general class of traffic-based survivability measures to analyse telecommunications networks is proposed. These measures calculate the average traffic-carrying capability of a network over all possible failure states. Traffic-based survivability measures are proposed to analyse mesh networks with and without restoration scheme. For the design of mesh restorable networks the network configuration and working capacity assignment are combined to minimise the cost before restoration is added into the network. Path restoration in spare capacity assignment is considered. A joint approach that combines configuration, working and spare capacity assignments altogether is addressed. A new architecture is proposed called the dual-homing hierarchical self-healing ring (DH-HSHR) architecture to interconnect self-healing rings. A heuristic algorithm for single-homing HSHRs is modified to find near optimum DH-HSHR configurations. Numerical results are given and the two restoration strategies, mesh and ring, compared in terms of survivability and cost

Published in:

IEE Proceedings - Communications  (Volume:144 ,  Issue: 5 )