Dual Networks Twin Nodes Architecture for WDM Networks

• Main Authors: Leu Kuen-Shuh, 呂坤樹
• Other Authors: Ming Seng Kao
• Format: Others
• Language: en_US
• Published: 1999
• Online Access: http://ndltd.ncl.edu.tw/handle/92392689477029076126

碩士 === 國立交通大學 === 電信工程系 === 87 === In this paper, we present a novel approach dedicated for planning optical networks, the Dual Networks Twin Nodes (DNTN) architecture. It originates from the consideration to efficiently and reliably connect many existing, blooming, ever independent but now closely correlated local area networks (LAN) or metropolitan area networks (MAN). To meet the individual requirements, these LAN/MAN do not always have the same topologies and routing algorithms. By adopting the proposed DNTN architecture, we may simply connect these existing LAN/MAN into a wide area network (WAN) with little interference on the existing network operation. Many familiar network topologies, such as ring, star, perfect shuffle and Manhattan street networks etc., could be adopted in the DNTN structure. We find that some excellent combinations can achieve high reliability, low mean hop distance as well as simple routing algorithm. We further propose a Radiation network constructed from a ring and a star subnetwork, being a novel network topology in the sense of DNTN architecture. A wavelength-division multiplexing (WDM) based Radiation network is studied in this paper. The Radiation network shows the merits that each subnetwork actually takes advantage of the other's special feature to compensate its own weakness. Thus the construction turns out to be perfect combination of ring and star networks. From the analysis results, we see that alternative routing algorithms can be employed to improve the system waiting time. Every node can also have higher service capability because of the possibility of wavelength reuse in the construction. Especially, the proposed Radiation network could be an excellent candidate for WDM-based wide area networks.