25 October 2016 Routing and spectrum assignment based on ant colony optimization of minimum consecutiveness loss in elastic optical networks
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Proceedings Volume 10158, Optical Communication, Optical Fiber Sensors, and Optical Memories for Big Data Storage; 101580M (2016) https://doi.org/10.1117/12.2246743
Event: International Symposium on Optoelectronic Technology and Application 2016, 2016, Beijing, China
Abstract
Elastic Optical Networks are considered to be a promising technology for future high-speed network. In this paper, we propose a RSA algorithm based on the ant colony optimization of minimum consecutiveness loss (ACO-MCL). Based on the effect of the spectrum consecutiveness loss on the pheromone in the ant colony optimization, the path and spectrum of the minimal impact on the network are selected for the service request. When an ant arrives at the destination node from the source node along a path, we assume that this path is selected for the request. We calculate the consecutiveness loss of candidate-neighbor link pairs along this path after the routing and spectrum assignment. Then, the networks update the pheromone according to the value of the consecutiveness loss. We save the path with the smallest value. After multiple iterations of the ant colony optimization, the final selection of the path is assigned for the request. The algorithms are simulated in different networks. The results show that ACO-MCL algorithm performs better in blocking probability and spectrum efficiency than other algorithms. Moreover, the ACO-MCL algorithm can effectively decrease spectrum fragmentation and enhance available spectrum consecutiveness. Compared with other algorithms, the ACO-MCL algorithm can reduce the blocking rate by at least 5.9% in heavy load.
© (2016) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Fu Wang, Fu Wang, Bo Liu, Bo Liu, Lijia Zhang, Lijia Zhang, Xiangjun Xin, Xiangjun Xin, Qinghua Tian, Qinghua Tian, Qi Zhang, Qi Zhang, Lan Rao, Lan Rao, Feng Tian, Feng Tian, Biao Luo, Biao Luo, Yingjun Liu, Yingjun Liu, Bao Tang, Bao Tang, } "Routing and spectrum assignment based on ant colony optimization of minimum consecutiveness loss in elastic optical networks", Proc. SPIE 10158, Optical Communication, Optical Fiber Sensors, and Optical Memories for Big Data Storage, 101580M (25 October 2016); doi: 10.1117/12.2246743; https://doi.org/10.1117/12.2246743
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