Research On Fuzzy Integral QoS Routing Policy In SUPA

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.