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Minimizing the worst-case playback delay (WPD) in VoD services is both critical and challenging. Given a fixed amount of bandwidth for broadcasting and patching, there is no prior work on determining the minimum WPD, let alone guaranteeing it. In this work, we propose novel schemes that leverage the unique properties of a TDM-based Passive Optical Network (PON) by performing rebroadcasting and patching...
In this paper, we study the waveband switching for wavelength-level demands and the traffic grooming for sub-wavelength-level demands in multi-granularity optical networks and propose a new routing algorithm called multi-granularity grooming based on Integrated Grooming Auxiliary Graph (MG-IGAG) to save the cost by reducing the number of switching ports in optical-cross connects. In MG-IGAG, we develop...
We develop multi-path reservation algorithms for in advance scheduling of large file transfers in connection-oriented optical networks. Specifically, to schedule a single file transfer to complete at the earliest possible time, a new max-flow based greedy algorithm (GOS) and four variants that adapt the k shortest paths and k-disjoint paths algorithms are proposed. Meanwhile, to find an earliest-finishing...
Several routing and wavelength assignment algorithms have been developed to reserve dedicated connections for high-performance applications on optical networks. In this paper, we present an analytical and experimental evaluation of these algorithms. Our experiments indicate that the minimum-hop feasible path algorithm maximizes network utilization. We also present novel algorithms for deferred wavelength...
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