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The demands mixed with the coarse and fine granularity cause the poor resource utilization and the port thirsty of previous grooming techniques in Wavelength-Division-Multiplexing (WDM) optical networks. Furthermore, with the large scale of the backbone, the optical network has been divided into multiple domains to achieve the scalability in the real world. In this paper, we study the gra-diversity...
In this paper, we propose a new heuristic algorithm called Hierarchical Multi-domain Multi-granularity Grooming (HMMG) based on Hierarchical Integrated Multi-granularity Auxiliary Graph (H-IMAG) to reduce the total number of optical switching ports. Simulation results show that performance of heuristic algorithm on H-IMAG can obtain significant improvements than previous algorithm.
In this paper, we propose a new algorithm, Waveband Routing with Layered Auxiliary Graph (WRLAG), to perform the inter-domain and intra-domain routing in multi-domain optical networks. We present the Layered Auxiliary Graph (LAG) that includes one virtual topology layer and multiple waveband-plane layers to compute a single-hop, or multi-hop or hybrid waveband route for each request based on the sub-path...
This paper proposes two protection algorithms, Segment-Based Protection (SBP) and Path-Based Protection (PBP), in fault-tolerant multi-domain optical networks to support waveband grouping with the layered auxiliary graph concept. To the best of our knowledge, this paper is the first study to achieve the fault-tolerance and waveband switching in multi-domain optical networks. Simulation results show...
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