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We design a metric to measure the occupied holding time difference of frequency slots. With the metric, a routing and spectrum allocation algorithm in dynamic scenario is proposed to improve the network spectral utilization. Evaluation results show the proposed algorithm outperforms obviously in blocking probability.
We propose dynamic routing and spectrum assignment algorithms for bitrate-flexible lightpaths in OFDM-based optical networks. The novel algorithms enable dynamic spectrum assignment with more efficient resource utilization and less traffic blockings.
A novel global quality of transmission (QoT) optimization scheme is proposed for GMPLS-based reconfigurable transparent optical networks. By perceiving and controlling the transmission impairments and state of tunable compensators, dynamic QoT optimization is implemented on the fly. Simulation results show that, the proposed QoT optimization can avoid unnecessary compensator adjustment and lower operating...
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