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; 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程序的通信需求提供解决方案。 拟议研究的目标是解决与未来光网络设计有关的问题。 特别是，可有效管理，控制和交付所需服务水平的可扩展体系结构和算法的设计是主要目标。 该提案基于使用光纤技术，波长乘积多路复用，波长转换和波长共享。 目的是开发将支持源，目的地和网络之间合同的解决方案，并允许将千兆位带宽用于用户应用程序。 该提案基于多个用户之间有限数量的波长，网络中有限的波长凸电能力的利用以及使用多纤维链接来支持各个用户通过将专用资源分配给每个连接的个人用户来支持损失和冲突的无冲突通信。 具体而言，将解决以下研究问题。 WDM的可用技术，波长共享，波长转换，多纤维链接和用户需求将得到缩进，可分配资源的最低粒度之间的平衡。 使用此信息基础，将开发有效利用网络资源的资源分配策略的新架构和相应的算法。 建筑解决方案将包括供耐受单纤维故障的备用容量。 当采用波长共享时，不同的来源可能会以受控方式传输，从而达到平均利率。 但是，根据共享机制，延迟可能是一个重要因素。 最小化会话阻止概率和数据传递中的延迟是设置会话请求的主要问题。 该提案的目的是为此问题开发有效的解决方案。 将开发和评估这两个指标在设置端到端请求时最小化这两个指标的分布式路由算法。 拟议研究的结果预计将在使用基于WDM的全光技术方面取得重大进展。 解决拟议问题的初始方法是使用分析模型和模拟评估所提出的架构。 初始研究的结果将用于开发替代体系结构和复杂的路由算法。