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Efficient wavelength assignment strategy for wavelength-division multiplexing optical networks

机译：Efficient wavelength assignment strategy for wavelength-division multiplexing optical networks

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摘要

When a physical network and its required connections aregiven, the routing and wavelength assignment (RWA) is a problem. A suitable path and wavelength must be selected from among the many possible choices for each connection such that no two paths using the same wavelength pass through the same link. In the absence of wavelength conversion, a lightpath must use the same wavelength on all fiber links that it spans. In wavelength-division multiplexing (WDM) optical networks, there is a need to maximize the number of connections accepted and to minimize the number of connections rejected, i.e., the blocking probability. We propose a new strategy to assign the wavelength. Then we compare the performance of the proposed strategy with commonly used wavelength assignment strategies in terms of the number of attempts required to establish the given connection. The comparison shows that fewer attempts are required for the proposed strategy, leading to a reduced connection establishment time.

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