Performance analysis of traffic-groomed optical networks employing alternate routing techniques

Authors:
Nicki Washington;Harry Perros
Affiliations:
Systems and Computer Science Department, Howard University, Washington, DC;Computer Science Department, North Carolina State University, Raleigh, NC
Venue:
ITC20'07 Proceedings of the 20th international teletraffic conference on Managing traffic performance in converged networks
Year:
2007

Citing 3
Cited 0

Call blocking probabilities in a traffic-groomed tandem optical network

Computer Networks: The International Journal of Computer and Telecommunications Networking - Special issue: In memroy of Olga Casals
Wavelength decomposition approach for computing blocking probabilities in WDM optical networks without wavelength conversions

Computer Networks: The International Journal of Computer and Telecommunications Networking
Computing approximate blocking probabilities for a class of all-optical networks

IEEE Journal on Selected Areas in Communications

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Abstract

Recent advances in telecommunication networks have allowed WDM to emerge as a viable solution to the ever-increasing demands of the Internet. In a wavelength-routed optical network, traffic is transported over lightpaths, which exclusively occupy an entire wavelength on each hop of the source-destination path. Because these networks carry large amounts of traffic, alternate routing methods are designed in order to allow traffic to be properly re-routed from source to destination in the event of certain events, such as link blocking or failure. In this paper, we consider a tandem traffic-groomed optical network, modeled as a multi-level overflow system, where each level represents a wavelength between adjacent nodes. The queueing network is analyzed using a combination of methods. As will be shown, the decomposition method provides a good approximate analysis of large overflow systems supporting traffic from multiple sources.