【作者】 胡华；

【导师】 窦军；

【作者基本信息】 西南交通大学 ， 计算机应用技术， 2010， 硕士

【摘要】 为了解决现有Internet面临的高速交换、服务质量(Quality of Service, QoS)保障、网络安全和移动性方面的问题,四川省网络通信技术重点实验室提出了“单物理层用户数据交换平台体系结构”(Single physical layer User-data switching Platform Architecture, SUPA)。SUPA采用带外信令控制思想,将“用户数据交换平台”(U-平台)和“信控管理平台”(S&M-平台)相分离,并将用户平台协议层次降低至单物理层。SUPA的服务质量保障体系由S&M-平台和U-平台的服务质量保障机制共同完成。路径选择技术作为SUPA服务质量保障体系结构中的核心技术之一,其好坏直接影响了整个服务质量保障机制的性能,因此对路径选择技术的研究具有重大的意义。本文是在SP-QLR(Shortest-Path& QoS-based Lambda Routing)和QoSLRP (QoS-based Lambda Routing Policy)的基础上对SUPA中的QoS路径选择技术所做的进一步研究。在理解了SUPA服务质量保障体系以及SUPA工作过程之后,本文研究了SUPA路径选择技术,分析了现有SUPA路径选择技术存在的问题,并在此基础上提出了一种能够更好的保障端到端服务质量的新的路由策略——基于模糊积分的QoS路径选择策略(FI-QoSR, Fuzzy Integral QoS Routing),该路径策略旨在为具有服务质量要求的业务提供可靠的质量保障。FI-QoSR策略能够根据不同的服务质量要求选取不同的路径,从而为业务提供更好的服务质量保障。FI-QoSR策略的研究主要包括以下内容：QOS参数的选取、路由信息的交互、最优路径的判断、隶属度函数的设计、FI-QoSR策略与QoSNP的协同工作。此外,本文运用OPNET Modeler仿真软件以QoSNP(QoS Negotiation Protocol)的两次单向协商(TSDN-Twice Single-Direction Negotiation)模式为例,验证了FI-QoSR策略的有效性以及FI-QoSR策略与QoSNP协同工作的合理性和可行性,并将FI-QoSR策略与OSPF策略、加权判优策略进行了对比实验,实验结果证明了FI-QoSR策略的优越性。更多还原

【Abstract】 Sichuan Network Communication Key Laboratory (SC-Netcom Lab) introduced a new network architecture called Single physical layer User-data switching Platform Architecture (SUPA) to overcome the challenges of high-speed switching, Quality of Service (QoS) assurance, network security and mobility in Internet. With out-of-band signaling concept, the User-data-switching platform (U-platform) is separated from control and management information (S&M-platforms) in SUPA. SUPA simplifies the user-data transfer platform (U-platform) into a single physical layer. SUPA establish a QoS provisioning framework both in S&M-platform and in U-platform.Routing technology as a core technology in SUPA QoS provisioning framework, it directly influences the overall service quality guarantee system performance. Therefore, it is great significance to research routing technology. This thesis systemically analyzes and researches on SUPA QoS routing technology which is based on SP-QLR(Shortest-Path& QoS-based Lambda Routing) and QoSLRP (QoS-based Lambda Routing Policy). Moreover, This thesis researches on SUPA QoS assurance system and SUPA operation process, and discusses SUPA routing technology, analyz the problems about present SUPA routing technology and then puts forward a novel routing policy to ensure point-to-point quality of service-----QoS routing policy which is based on fuzzy integral(FI-QoSR, Fuzzy Integral QoS Routing). FI-QoSR policy aims at providing reliable quality assurance for the business with the quality of service requirements. FI-QoSR policy chooses different paths according to the different quality of service requirements so that it provides better service quality guarantee. FI-QoSR policy researches include the following contents:QoS parameter selection, routing information communication, optimal path determination and membership function design, FI-QoSR policy and QoSNP collaborative work.To further validate the policy, simulation experiments by use of OPNET Modeler have been carried out. Twice Single-Direction Negotiation (TSDN) protocol is exercised for simplicity, and simulation results show that FI-QoSR policy associate with QoSNP is workable and validated. Compared experiments with OSPF policy and weighted arbiter policy prove the superiority of the FI-QoSR policy.更多还原