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Proceedings Paper

Efficient modeling of location decision for PCEs in multi-domain optical networks
Author(s): Wenjun Xie; Jien Song; Le Lu; Yun Xia; Dajiang Wang; Shanguo Huang; Wanyi Gu
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Paper Abstract

The process of computing routes that network traffic must follow throughout network has become much more complex in recent years. PCE (Path Computational Element) technology is emerging and gaining importance under the circumstances. In this paper, PCE architecture is outlined, and the impact of PCEs allocation decisions is discussed briefly. To track the problem of locating PCEs, an integer linear programming (ILP) model is presented to find the optimal PCEs allocation solution in multi-domain optical networks. The objective is to minimize average amount of time for sending a message to all nodes in the topology, i.e. message flooding cost. Then, two heuristics, LSPLP and TSPLP, are developed based on this model. Numerical results show that compared with traditional allocation strategies, the proposed algorithms can reduce the message flooding cost efficiently.

Paper Details

Date Published: 10 January 2011
PDF: 6 pages
Proc. SPIE 7989, Network Architectures, Management, and Applications VIII, 798912 (10 January 2011); doi: 10.1117/12.890129
Show Author Affiliations
Wenjun Xie, Beijing Univ. of Posts and Telecommunications (China)
Jien Song, Huaxin Consulting Co., Ltd (China)
Le Lu, Beijing Univ. of Posts and Telecommunications (China)
Yun Xia, Huaxin Consulting Co., Ltd (China)
Dajiang Wang, ZTE Corp. (China)
Shanguo Huang, Beijing Univ. of Posts and Telecommunications (China)
Wanyi Gu, Beijing Univ. of Posts and Telecommunications (China)


Published in SPIE Proceedings Vol. 7989:
Network Architectures, Management, and Applications VIII
Lena Wosinska, Editor(s)

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