Optical resources provisioning: multipoint-to-point lightpaths mapping in all-optical networks

Authors:
Nizar Bouabdallah;Guy Pujolle
Affiliations:
NC State University;LIP6, University of Paris 6, 8 rue du Capitaine Scott, F-75015 Paris, France
Venue:
International Journal of Network Management
Year:
2005

Citing 3
Cited 0

Wavelength-routed optical networks: linear formulation, resource budgeting tradeoffs, and a reconfiguration study

IEEE/ACM Transactions on Networking (TON)
A practical approach for routing and wavelength assignment in large wavelength-routed optical networks

IEEE Journal on Selected Areas in Communications
Lightpath (wavelength) routing in large WDM networks

IEEE Journal on Selected Areas in Communications

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Abstract

In wavelength-division multiplexing (WDM) optical networks, the bandwidth request of a traffic stream can be much lower than the capacity of a lightpath. Efficiently grooming low-speed connections onto high-capacity lightpaths will improve the network throughput and reduce the network cost. In this paper, we propose and evaluate a new concept of traffic aggregation in WDM mesh networks that aims to eliminate both the bandwidth under-utilization and scalability concerns that are typical in all-optical wavelength routed networks. This approach relies on the multipoint-to-point lightpath concept. In order to assess the efficiency of our proposal, all underlying network costs are compared. To achieve this aim, we devise a new provisioning algorithm to map the multipoint-to-point lightpaths in the network. Our results show that the proposed aggregation technique can significantly improve the network throughput while reducing its cost.