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Proceedings Paper

Routing and spectrum assignment based on ant colony optimization of minimum consecutiveness loss in elastic optical networks
Author(s): Fu Wang; Bo Liu; Lijia Zhang; Xiangjun Xin; Qinghua Tian; Qi Zhang; Lan Rao; Feng Tian; Biao Luo; Yingjun Liu; Bao Tang
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Paper 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.

Paper Details

Date Published: 25 October 2016
PDF: 15 pages
Proc. SPIE 10158, Optical Communication, Optical Fiber Sensors, and Optical Memories for Big Data Storage, 101580M (25 October 2016); doi: 10.1117/12.2246743
Show Author Affiliations
Fu Wang, Beijing Univ. of Posts and Telecommunications (China)
Bo Liu, Beijing Univ. of Posts and Telecommunications (China)
Lijia Zhang, Beijing Univ. of Posts and Telecommunications (China)
Xiangjun Xin, Beijing Univ. of Posts and Telecommunications (China)
Qinghua Tian, Beijing Univ. of Posts and Telecommunications (China)
Qi Zhang, Beijing Univ. of Posts and Telecommunications (China)
Lan Rao, Beijing Univ. of Posts and Telecommunications (China)
Feng Tian, Beijing Univ. of Posts and Telecommunications (China)
Biao Luo, Wuhan Telecommunication Devices Co., Ltd. (China)
Yingjun Liu, Wuhan Telecommunication Devices Co., Ltd. (China)
Bao Tang, Wuhan Telecommunication Devices Co., Ltd. (China)


Published in SPIE Proceedings Vol. 10158:
Optical Communication, Optical Fiber Sensors, and Optical Memories for Big Data Storage

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