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Architecture aspects of optical networks ― a Swisscom approach

机译:光网络的架构方面-Swisscom方法

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Swisscom Fixnet Ltd. has evaluated a new platform for the broadband transport requirements. This new platform will be a combination of advanced SDH (Synchronous Digital Hierarchy) and WDM (Wavelength Division Multiplexing) technology and the principal goal is to cover the bandwidth segment between STM-1 and STM-64. In addition new forthcoming data services e.g. Gigabit Ethernet can be delivered on the same platform infrastructure between remote areas. This paper describes the drivers for the project as well as the requirements at the start of the evaluation process of the transport platform. The requirements include technical, operational and financial aspects. The main focus will then be the discussion of the core, metro or regional area architecture. Various scenarios have been analysed and compared. The main conclusions have been that the number of "flexibility points" should be kept lower than in traditional SDH-network due to cost reasons in a broadband environment with packet oriented services. Furthermore, the WDM technology is not economically reasonable for a low number of channels in the regional area. The paper then summarises these lessons learned from the project.
机译:Swisscom Fixnet Ltd.已评估了一个满足宽带传输要求的新平台。这个新平台将先进的SDH(同步数字体系)和WDM(波分复用)​​技术结合在一起,其主要目标是覆盖STM-1和STM-64之间的带宽段。另外,即将推出的新数据服务例如可以在偏远地区之间的同一平台基础结构上提供千兆以太网。本文介绍了该项目的驱动程序以及运输平台评估过程开始时的要求。要求包括技术,运营和财务方面。然后,主要焦点将是核心,城域或区域架构的讨论。已对各种方案进行了分析和比较。主要结论是,由于具有面向分组服务的宽带环境中的成本原因,“灵活性点”的数量应保持低于传统SDH网络中的数量。此外,对于区域区域中的少量信道,WDM技术在经济上并不合理。然后,本文总结了从项目中学到的这些经验教训。

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