Optimal Multicast Routing Using Genetic Algorithm for WDM Optical Networks

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We consider the multicast routing problem for large-scale wavelength division multiplexing (WDM) optical networks where transmission requests are established by point-to-multipoint connections. To realize multicast routing in WDM optical networks, some nodes need to have light (optical) splitting capability. A node with splitting capability can forward an incoming message to more than one output link. We consider the problem of minimizing the number of split-capable nodes in the net-work for a given set of multicast requests. The number of wavelengths is fixed and given a priori. We propose a genetic algorithm that exploits the combination of alternative shortest paths for the given multicast requests in order to minimize the number of required split-capable nodes. This algorithm is examined for two realistic networks constructed based on the locations of major cities in Ibaraki Prefecture and those in Kanto District in Japan. Our experimental results show that the proposed algorithm can reduce more than 10% of split-capable nodes compared with other routing algorithms whereby the optimization for the split-capable node placement is not taken into account.

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詳細情報

  • CRID
    1571980077248852096
  • NII論文ID
    110003222592
  • NII書誌ID
    AA10826261
  • ISSN
    09168516
  • 本文言語コード
    en
  • データソース種別
    • CiNii Articles

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