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IEICE TRANSACTIONS on Communications

An Optimized Algorithm for Dynamic Routing and Wavelength Assignment in WDM Networks with Sparse Wavelength Conversion

Liangrui TANG, Sen FENG, Jianhong HAO, Bin LI, Xiongwen ZHAO, Xin WU

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Summary :

The dynamic routing and wavelength assignment (RWA) problem in wavelength division multiplexing (WDM) optical networks with sparse wavelength conversion has been a hot research topic in recent years. An optimized algorithm based on a multiple-layered interconnected graphic model (MIG) for the dynamic RWA is presented in this paper. The MIG is constructed to reflect the actual WDM network topology. Based on the MIG, the link cost is given by the conditions of available lightpath to calculate an initial solution set of optimal paths, and by combination with path length, the optimized solution using objective function is determined. This approach simultaneously solves the route selection and wavelength assignment problem. Simulation results demonstrate the proposed MIG-based algorithm is effective in reducing blocking probability and boosting wavelength resource utilization compared with other RWA methods.

Publication
IEICE TRANSACTIONS on Communications Vol.E98-B No.2 pp.296-302
Publication Date
2015/02/01
Publicized
Online ISSN
1745-1345
DOI
10.1587/transcom.E98.B.296
Type of Manuscript
PAPER
Category
Fiber-Optic Transmission for Communications

Authors

Liangrui TANG
  NCEPU
Sen FENG
  NCEPU
Jianhong HAO
  NCEPU
Bin LI
  NCEPU
Xiongwen ZHAO
  NCEPU
Xin WU
  NCEPU

Keyword