2005
An optical-drop wavelength assignment algorithm for efficient wavelength reuse under heterogeneous traffic in WDM ring networks
IEICE Trans. Fundamentals, A
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- ,
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- Volume
- 88
- Number
- 5
- First page
- 1234
- Last page
- 1240
- Language
- English
- Publishing type
- Publisher
- The Institute of Electronics, Information and Communication Engineers
The wavelength-division multiplexing (WDM) technology has been popular in communication societies for providing very large communication bands by multiple lightpaths with different wavelengths on a single optical fiber. Particularly, a double-ring optical network architecture based on the packet-over-WDM technology such as the HORNET architecture, has been extensively studied as a next generation platform for metropolitan area networks (MANs). Each node in this architecture is equipped with a wavelength-fixed optical-drop and a fast tunable transmitter so that a lightpath can be established between any pair of nodes without wavelength conversions. In this paper, we formulate the optical-drop wavelength assignment problem (ODWAP) for efficient wavelength reuse under heterogeneous traffic in this network, and prove the NP-completeness of its decision problem. Then, we propose a simple heuristic algorithm for the basic case of ODWAP. Through extensive simulations, we demonstrate the effectiveness of our approach in reducing waiting times for packet transmissions when a small number of wavelengths are available to retain the network cost for MANs.
- Link information
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- CiNii Articles
- http://ci.nii.ac.jp/naid/110003213436
- CiNii Books
- http://ci.nii.ac.jp/ncid/AA10826239
- ID information
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- ISSN : 0916-8508
- CiNii Articles ID : 110003213436
- CiNii Books ID : AA10826239