13.WDMネットワークにおける低棄却率を実現するフォワード型 : バックワード型光波長パス設定方式の提案

概要

論文の詳細を見る
In WDM (Wavelength Division Multiplexing) networks, the Routing and Wavelength Assignment (RWA) problems are pointed out, i. e., connection requests are blocked due to the inconsistency between wavelength and route. In this paper, we propose a new optical wavelength path establishment scheme for achieving low blocking probability. The proposed scheme is to establish an optical path by searching a route from source node to destination node, where a wavelength is available. When an intermediate node on the least-hops route releases a wavelength, the node sends the message on the available wavelength to the source node, which met the blocking at the last path establishment trial. The source node establishes an optical path by adopting the wavelength and the route. In case that the procedure does not succeed in establishing an optical path, the destination node establishes an optical path to source node on the least loaded route. Our method shows lower blocking probability than the existing methods.
工学院大学の論文
2006-04-30