Research Article
Consecutiveness Loss-Aware Routing and Spectrum Assignment Algorithm in Flexible Bandwidth Optical Networks
@INPROCEEDINGS{10.1109/ChinaCom.2012.6417487, author={Xinbo Wang and Yongli Zhao and Jiawei Zhang and Xiaosong Yu and Jie Zhang}, title={Consecutiveness Loss-Aware Routing and Spectrum Assignment Algorithm in Flexible Bandwidth Optical Networks}, proceedings={7th International Conference on Communications and Networking in China}, publisher={IEEE}, proceedings_a={CHINACOM}, year={2012}, month={10}, keywords={flexible bandwidth; rsa; first fit; cla-rsa}, doi={10.1109/ChinaCom.2012.6417487} }- Xinbo Wang
Yongli Zhao
Jiawei Zhang
Xiaosong Yu
Jie Zhang
Year: 2012
Consecutiveness Loss-Aware Routing and Spectrum Assignment Algorithm in Flexible Bandwidth Optical Networks
CHINACOM
IEEE
DOI: 10.1109/ChinaCom.2012.6417487
Abstract
Abstract—Routing and spectrum assignment (RSA) problem has become a research hotspot in flexible bandwidth optical networks. In this paper, we propose a novel RSA algorithm based on consecutiveness loss, i.e. Consecutiveness Loss-Aware Routing and Spectrum Assignment algorithm (CLA-RSA). A metric (consecutiveness loss) which quantifies the consecutiveness damage of spectrum brought by connection request is proposed to choose optimal route and spectrum assignment scheme. Numeric results show that CLA-RSA performs better in blocking probability than First Fit and Maximize Common Large Segment algorithm (MCLS). Also, our algorithm can effectively decrease spectrum fragmentation and enhance spectrum consecutiveness.
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