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Proceedings Paper

Centralized and distributed routing and spectrum assignment schemes for bandwidth-variable optical networks
Author(s): Jingjing Wang; Yongli Zhao; Jie Zhang; Yuyao Wu; Wanyi Gu; Dajiang Wang; Xuping Cao
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Paper Abstract

Flexible bandwidth networking has recently been proposed as a spectrally efficient networking technology that effectively supports dynamically varying traffic demands [1]. This networking technology provides an opportunity to maximize spectral efficiency for each of many arbitrary bandwidth channels generated using one of many possible modulation formats [2]. Path Computation Element (PCE) is first introduced for dynamic routing and spectrum assignment problem in elastic optical network. We proposed three centralized and distributed routing and spectrum assignment solutions. They are Centralized Routing and Distributed Spectrum Assignment (CR+DSA), Centralized Routing and Centralized Spectrum Assignment (CR+CSA) and Distributed Routing and Distributed Spectrum Assignment (DR+DSA). The two centralized proposals both own PCE in its architecture. The performance of three proposed centralized and distributed routing and spectrum assignment solutions have been analyzed and compared. For the experimental evaluation, the performance of Centralized Routing and Centralized Spectrum Assignment is the most adaptable RSA strategy for the whole bandwidth-variable optical networks with dynamic traffic.

Paper Details

Date Published: 15 December 2011
PDF: 6 pages
Proc. SPIE 8310, Network Architectures, Management, and Applications IX, 83101U (15 December 2011); doi: 10.1117/12.904431
Show Author Affiliations
Jingjing Wang, Beijing Univ. of Posts and Telecommunications (China)
Yongli Zhao, Beijing Univ. of Posts and Telecommunications (China)
Jie Zhang, Beijing Univ. of Posts and Telecommunications (China)
Yuyao Wu, Beijing Univ. of Posts and Telecommunications (China)
Wanyi Gu, Beijing Univ. of Posts and Telecommunications (China)
Dajiang Wang, ZTE Corp. (China)
Xuping Cao, ZTE Corp. (China)


Published in SPIE Proceedings Vol. 8310:
Network Architectures, Management, and Applications IX
Lena Wosinska; Ken-ichi Sato; Jing Wu; Jie Zhang, Editor(s)

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