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首页> 外文会议>Conference on Terabit Optical Networking: Architecture, Control, and Management Issues, Nov 6-7, 2000, Boston, USA >Optimal Design of Multi-Hop Multi-Rate WDM Rings
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Optimal Design of Multi-Hop Multi-Rate WDM Rings

机译：多跳多速率WDM环的优化设计

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摘要

Transparency of the optical layer offers the possibility to design a network that operates at varying transmission bit rates. While variable bit rate interfaces are being tested and will soon provide the possibility to optimally select the transmission rate for each optical channel, the potential advantages of relying upon multiple transmission rates in the optical network have yet to be fully explored. In this paper we define the concept of Multi-hop and Multi-rate (M&M for short) network in which the tributary signal is transmitted over a concatenation of optical channels, with each optical channel operating at its own transmission rate. The optimal rate of each optical channel is determined by a number of factors including the end node's interface, amount of multiplexed traffic and cost of the network components. The potential advantages provided by the M&M network when compared to first generation optical networks (i.e., SONET/SDH), to single-arid multi-hop (constant bit rate) optical networks, are discussed in general and demonstrated numerically in a WDM ring. Presented results show that the network cost reduction achieved by the M&M design is a function of the cost ratio between the optical bandwidth (wavelengths) and the optical terminals.
机译：光学层的透明性提供了设计以变化的传输比特率运行的网络的可能性。虽然可变比特率接口正在测试中，并将很快为每个光信道提供最佳选择传输速率的可能性，但尚未充分探索依赖光网络中多种传输速率的潜在优势。在本文中，我们定义了多跳和多速率（简称M＆M）网络的概念，在该网络中，支路信号通过一系列光信道传输，每个光信道均以自己的传输速率运行。每个光通道的最佳速率取决于许多因素，包括终端节点的接口，多路复用流量的数量和网络组件的成本。与第一代光网络（即SONET / SDH）相比，与单干多跳（恒定比特率）光网络相比，M＆M网络提供的潜在优势已在一般情况下进行了讨论，并在WDM环网中进行了数值演示。呈现的结果表明，通过M＆M设计实现的网络成本降低是光带宽（波长）与光终端之间成本比的函数。

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