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Study on Dynamic Routing, Wavelength and Timeslot Assignment Algorithm in WDM-TDM Optical Networks |
Xiang Peng; Wang Rong |
Institute of Communication Engineering, PLAUST, Nanjing 210007, China |
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Abstract In order to improve the wavelength utilization in WDM networks, multiple traffic connections can be allowed to share the capacity of a wavelength via TDM technology. The resultant network is a WDM-TDM optical network, where the Routing, Wavelength and Timeslot Assignment (RWTA) problem is the key for setting up traffic connections. In this paper, the dynamic RWTA problem is studied, a Most-Used Based RWTA algorithm (MUB) and an Enhanced MUB algorithm (EMUB) are proposed, and their performances are evaluated through computer simulation. The results show that the EMUB algorithm outperforms the MUB algorithm, and improves the resource utilization of WDM-TDM optical network.
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Received: 15 November 2007
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