基于一致性分析的复杂网络下拥塞控制建模与算法研究

项目名称： 基于一致性分析的复杂网络下拥塞控制建模与算法研究

项目编号： No.61304047

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 自动化技术、计算机技术

项目作者： 杨歆豪

作者单位： 苏州大学

项目金额： 25万元

中文摘要： 由于网络资源和网络流量分布的不均衡，拥塞是Internet网络的固有属性。针对多路由器网络拥塞现象，本项目基于复杂网络理论，拟设计多路由器网络环境下的一致性拥塞控制算法，提高拥塞控制算法在复杂网络环境下的服务质量(链路吞吐量、队列延时、公平性等)。通过有向图对多路由器网络拓扑建模，在对拥塞现象产生原因的分析基础上，将网络拥塞控制问题描述为复杂网络下的一致性问题，具体内容包括：多路由器环境下的网络拓扑结构建模；节点信息完整性、时变拓扑结构和权重有向图分析；基于复杂网络模型的网络拥塞控制算法设计；时滞、丢包率和网络服务质量分析。最后，基于Ns2仿真软件构造变网络参数的多路由器网络仿真环境，为拥塞控制算法提供测试平台并验证所设计算法的有效性。

中文关键词： 网络拥塞控制；复杂网络一致性；T-S模糊控制；自适应控制；网络服务质量

英文摘要： Due to the unbalance distributions of the network resources and traffics, the occurrence of congestion is an intrinsic characteristic of the Internet. The consensus congestion control algorithms which deal with the congestion in multi routers will be investigated based on the complex network theory in the project. The proposed algorithms maintain the better quality of service (turoughput, time delay, fairness, et al) in complex network condition. The multi routers network topology will be modelled based on the directional graph. Furthermore, the relationship between the consensus problem and the congestion control will be investigated by studying the network congestion phenomenon. The main contents of this project are as follow: the model in multi routers network topology; the analysis of the information intergrity, the time-varying topology and the weighted directional graph; the congestion control algorithm design based on the complex network model; the anglysis of time delay, packet drop ratio and Qos. Finally, Multi router network simulation environment with variable network parameters is structured by Ns2, which is designed to verify the feasibility of the proposed algorithm as the congestion control algorithm testing platform.

英文关键词： Network Congestion Control；Complex Network Consensus；T-S Fuzzy Control；Self-adaptive Control；Quality of Service