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RWA Algorithm for Differentiated Service in Next Generation Optical Internet Backbone Networks  

송현수 (부경대학교 정보통신공학과)
배정현 (부경대학교 정보통신공학)
김성운 (부경대학교 정보통신공학)
김영부 (한국전자통신연구원 네트워크구조)
이현진 (한국전자통신연구)
이재동 (경남정보대학 IT학부)
Abstract
In the Next Generation Internet(NGI) backbone network, a Dense Wavelength Division Multiplexing (DWDM) technology has been more and more highlighted to cover the increasing subscribers and bandwidth requirement. For such a DWDM network, Routine and Wavelength Assignment (RWA) is the essential problem to establish the optimal path and assign a wavelength efficiently to the selected path in resource utilization. However, the existing RWA algorithms do not consider the congestion in the network so that the performance of then is so limited. To solve this problem, in this paper, we introduce a new RWA algorithm, called Multi Wavelength-Minimum Interference path Routing (MW-MIPR) that establishes a routing path to minimize the interference for many potential future connection setup request. And then, we also propose a wavelength-routed QoS routing scheme based on differentiated QoS classes with applying MW-MIPR algorithm. Simulation results are also given to prove the efficiency of the proposed algorithms.
Keywords
DWDM; RWA; MW-MIPR; QoS; OSNR; Protection; Restoration;
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