NR: Collaborative Research: Wavelength Sharing Mesh-Restorable Optical Networks

NR：协作研究：波长共享网状可恢复光网络

• 批准号: 0322959
• 负责人: Krishna Sivalingam
• 金额: $ 16.82万
• 依托单位: University of Maryland Baltimore County
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-09-01 至 2007-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0322959&HistoricalAwards=false
• 关键词: NR; Collaborative; Research; Wavelength; Sharing

Recent advances in optical wavelength division multiplexing (WDM) and optical switching have enabled the development of next generation computer networks, to operate at several Terabits per second. A side impact of this development is that fault tolerance has become even more important, since a single failure may now result in much greater loss of information. The proposed research will in-vestigate critical problems in the design of survivable optical wavelength divi-sion multiplexed (WDM) networks that are based on mesh topology. The novelty of the proposed work is two-fold: first is the consideration of wavelength-sharing wavelength routed networks (WRWS), where multiple individual ses-sions may share a wavelength, and the second is consideration of multiple si-multaneous link failures. The goal is to provide reliable connections, based on deterministic and probabilistic requirements, to the clients using the network. This topic constitutes an important component of the nation's critical infra-structure protection, given that optical WDM networks are fast becoming part of the high-speed national wide-area backbone infrastructure. The underlying goal is to obtain practical and tractable optimal and near-optimal solutions for net-works with a large number of nodes (50 - 100), with several fibers per link and more than 100 wavelengths per fiber; an additional objective is achieving sub-millisecond restoration times, compared to the few-seconds solutions of today. The proposed research will address the performance comparison and cost-benefit tradeoffs of wavelength-sharing and optical burst switching (OBS) mechanisms.

光波分复用（WDM）和光交换的最新进展使下一代计算机网络的发展能够以每秒数太比特的速度运行。这种开发的一个副作用是容错变得更加重要，因为单个故障现在可能导致更大的信息损失。提出的研究将探讨基于网状拓扑的可生存光波分复用（WDM）网络设计中的关键问题。提出的工作的新颖之处在于两个方面：首先是考虑了波长共享波长路由网络（WRWS），其中多个单独的会话可以共享一个波长，其次是考虑了多个同步链路故障。目标是为使用网络的客户机提供基于确定性和概率需求的可靠连接。鉴于光波分复用网络正迅速成为高速国家广域骨干基础设施的一部分，本课题构成了国家关键基础设施保护的重要组成部分。基本目标是为具有大量节点（50 - 100）、每条链路有几根光纤和每根光纤超过100个波长的网络获得实际和易于处理的最佳和接近最佳的解决办法；另一个目标是实现亚毫秒级的恢复时间，而不是目前的几秒钟解决方案。提出的研究将解决波长共享和光突发交换（OBS）机制的性能比较和成本效益权衡。