Collaborative Research: Exploring Architectures and Algorithms for Optical Networks

合作研究：探索光网络的架构和算法

• 批准号: 9973102
• 负责人: Arun Somani
• 金额: $ 33.06万
• 依托单位: Iowa State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-09-15 至 2004-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9973102&HistoricalAwards=false
• 关键词: Collaborative; Research; Exploring; Architectures; Algorithms

Future networks are expected to offer solutions for the communication needs of a wide variety of applications. The goals of the proposed research are to address the issues related to the design of future optical networks. In particular, the design of scalable architectures and algorithms to manage, control, and deliver the required level of service efficiently is the primary goal. The proposal is based on the use of optical fiber technology, wavelength division multiplexing, wavelength conversion, and wavelength sharing. The objective is to develop solutions that will support a contract between source, destination, and network, and allow the use of gigabit bandwidths for user applications. The proposal is based on the sharing of a limited number of wavelengths among multiple users, the utilization of limited wavelength convesion capability in the network, and the use of multi-fiber links to support loss- and conflict-free communication for individual users by allocating dedicated resources to each connection. Specifically, the following research issues will be addressed. The balance between the minimum granularity of allocatable resources that can be supported by the available technology of WDM, wavelength sharing, wavelength conversion, multi-fiber links, and user needs will be indentified. Using this information base, new architectures and corresponding algorithms for resource allocation policies that efficiently utilize network resources will be developed. The architectural solutions will include spare capacity to tolerate single-fiber failures. When wavelength sharing is employed, different sources may transmit in a controlled manner such that they achieve their average rates. However, depending on the sharing mechanism, delay may be an important factor. Minimizing session blocking probabilities and delays in data delivery are the main issues in setting up session requests. An aim of this proposal is to develop effective solutions for this problem. Distributed routing algorithms that minimize both of these metrics in setting up an end-to-end request will be developed and evaluated. The results of the proposed research are expected to make significant advances towards the use of WDM-based all-optical technology. The initial approach to solve the proposed problems is to evaluate the proposed architectures using analytical models and simulations. The results of the initial studies will be used in developing alternative architectures and sophisticated routing algorithms.

未来的网络有望为各种应用的通信需求提供解决方案。 提出的研究的目标是解决与未来光网络的设计有关的问题。 特别是，设计可扩展的体系结构和算法来有效地管理、控制和交付所需的服务级别是首要目标。 该提案基于光纤技术、波分复用、波长转换和波长共享的使用。 目标是开发解决方案，支持源、目的地和网络之间的合同，并允许用户应用程序使用千兆带宽。 该方案基于在多个用户之间共享有限数量的波长，利用网络中有限的波长扩展能力，以及通过为每个连接分配专用资源来使用多光纤链路来支持单个用户的无损耗和无冲突通信。 具体而言，将解决以下研究问题。 将确定WDM、波长共享、波长转换、多光纤链路等现有技术所能支持的可分配资源的最小粒度与用户需求之间的平衡。 使用这个信息库，新的架构和相应的算法，资源分配策略，有效地利用网络资源将被开发。 架构解决方案将包括备用容量，以容忍单光纤故障。 当采用波长共享时，不同的源可以以受控的方式传输，使得它们实现它们的平均速率。 然而，根据共享机制，延迟可能是一个重要因素。 最小化会话阻塞概率和数据传输延迟是设置会话请求的主要问题。 这项建议的目的是为这一问题制定有效的解决办法。 分布式路由算法，最大限度地减少这两个指标在建立一个端到端的请求将被开发和评估。 拟议的研究结果预计将使基于WDM的全光技术的使用取得重大进展。 解决所提出的问题的最初方法是使用分析模型和模拟来评估所提出的架构。 初步研究的结果将用于开发替代架构和复杂的路由算法。