All-optical networks with sparse wavelength conversion
IEEE/ACM Transactions on Networking (TON)
IEEE/ACM Transactions on Networking (TON)
Waveband switching in optical networks
IEEE Communications Magazine
Benefits of wavelength translation in all-optical clear-channel networks
IEEE Journal on Selected Areas in Communications
Wavelength conversion in WDM networking
IEEE Journal on Selected Areas in Communications
IEEE Journal on Selected Areas in Communications
A study of waveband switching with multilayer multigranular optical cross-connects
IEEE Journal on Selected Areas in Communications
A comprehensive study on next-generation optical grooming switches
IEEE Journal on Selected Areas in Communications
Survivability in waveband switching optical networks: Challenges and new ideas
Computer Communications
New insights on survivability in multi-domain optical networks
Information Sciences: an International Journal
Multi-layer survivable routing mechanism in GMPLS based optical networks
Journal of Systems and Software
Alternate multihop routing in limited reconfigurable optical networks
INFOCOM'09 Proceedings of the 28th IEEE international conference on Computer Communications Workshops
Optimal waveband switching in optical ring networks
INFOCOM'10 Proceedings of the 29th conference on Information communications
Energy saving and cost reduction in multi-granularity green optical networks
Computer Networks: The International Journal of Computer and Telecommunications Networking
A new multi-granularity grooming algorithm based on traffic partition in IP over WDM networks
Computer Networks: The International Journal of Computer and Telecommunications Networking
Uniform waveband assignment in optical mesh networks
Photonic Network Communications
Multi-granularity and robust grooming in power- and port-cost-efficient IP over WDM networks
Computer Networks: The International Journal of Computer and Telecommunications Networking
Photonic Network Communications
Journal of Parallel and Distributed Computing
Optimal Wavebanding in WDM Ring Networks
IEEE/ACM Transactions on Networking (TON)
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Waveband switching (WBS) in conjunction with multigranular optical cross-connect (MG-OXC) architectures can reduce the cost and complexity of OXCs. In this paper, we study the performance of different MG-OXC architectures under dynamic traffic. In the case with online incremental traffic, we compare two MG-OXC architectures in terms of the blocking probability of new lightpath requests and study the impact of port counts and traffic loads. We develop an online Integer Linear Programming model (On-ILP), which minimizes the number of used ports and the request blocking probability, given a fixed number of wavelengths and MG-OXC architecture. The On-ILP optimizes the routing of new lightpaths so as to maximize lightpath grouping and reduce the port count given that existing traffic cannot be rearranged. We also propose a new efficient heuristic algorithm, called Maximum Overlap Ratio (MOR) to satisfy incremental traffic and compare it with the On-ILP, first-fit, and random-fit algorithms. Our results and analysis indicate that using WBS with MG-OXCs can reduce the size (and, hence, the cost) of switching fabrics compared to using ordinary OXCs. Based on the results and observations in the incremental traffic case, we further study the performance of a particular MG-OXC architecture under fully dynamic or fluctuating traffic. Our simulations show that the proposed heuristic algorithm waveband assignment with path graph, which groups wavelengths to bands and uses wavelength converters efficiently under fluctuating traffic, significantly out-performs other heuristic algorithms.