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In this paper, we investigate on the problem of energy-efficient traffic grooming under sliding scheduled traffic model for IP over WDM optical networks, so as to minimize the total energy consumption of the core network. We present a two-layer auxiliary graph model and propose a new energy-efficient traffic grooming heuristic named Two-Dimension Green Traffic Grooming (TDGTG) algorithm, which takes...
In this paper, we study green (energy efficient) optical networks with availability guarantee. After introducing a power consumption model for green optical network design, we propose a design method called Availability-Guaranteed Energy-Efficient Design (AGEED). In AGEED, we employ dedicated path protection as backup capacity in order to improve the availability. Based on iterative routing by modifying...
When planning survivable WDM mesh networks, conventional solutions to provide differentiated reliability under shared risk link group (SRLG) constraints mostly assume explicit knowledge of traffic matrices, and consider the failure probability of a fiber link with single criteria (e.g., the link length). Due to the highly variation of nowadays demand patterns and multiple causes of SRLG failures,...
In this paper, we propose a novel algorithm, called SPCHTA (shared lightpath protection based on connection holding time awareness), for the survivable two-layer optical mesh networks. For dynamic traffic, the holding time of traffic connection requests may be known in advance. So we can use the connection holding time to set up working path and backup path for the request. Through this algorithm,...
We propose a Mixed Sharing Auxiliary Graph (MSAG) for dynamic traffic grooming in heterogeneous WDM mesh networks. Based on MSAG model, a novel heuristic named BLSW-ILMS (Backup LSP Shared Working Lightpath with Inter-layer Mixed Sharing) is proposed. Simulation results show that the proposed algorithm can efficiently decrease the blocking probability (BP).
Valiant load-balancing [1] (VLB) has attracted considerable research interest in recent years, as it guarantees 100% throughput for any traffic matrix satisfying hose model[2] constraints without obtaining precise traffic matrix. However, when the traffic variation tends to be gentle, the measurement of traffic demands between certain node pairs becomes feasible. Then it is likely to adjust the VLB...
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