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Network Congestion Control Method Based on QoS Routing Model

Author: HuHeWei
Tutor: KongJinSheng
School: Zhengzhou University
Course: Control Theory and Control Engineering
Keywords: Network Congestion Control QoS routing model Fuzzy Genetic PID Immune particle swarm Path planning
CLC: TP393.06
Type: Master's thesis
Year: 2009
Downloads: 28
Quote: 0
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In recent years , along with the sharp increase of network users , the Internet becomes increasingly busy . The rapid growth in the communications business backbone growing congestion at the same time , a variety of new services put forward higher requirements for quality of network services . Network congestion control plays a vital role to ensure the stability of the network , improve network quality of service . Network congestion control method based on the QoS routing model in-depth research , the main work and reads as follows: (1 ) causes network congestion and network quality of service on the basis of systematic analysis , using QoS routing the model addresses the idea of network congestion control . NS2 network simulation software analysis and functional expansion for the application of the software for network modeling , network congestion control and simulation research laid the foundation . (2) the QoS routing model analysis, computer network based on the abstract diagram G ( V , E ) , the decomposition of the network for each router unit , the establishment of a mathematical model of router unit , concatenate them constitute IP network the mathematical model of the system , on the basis of this model to establish QoS routing model . (3) router model based on fuzzy genetic the PID network congestion control method , the method using gray prediction router queue length lookahead detection of network congestion , network parameters on-line adaptive fuzzy genetic PID algorithm effectively achieve congestion control. Simulation results show the validity and reliability of the method . (4) the integration of the immune algorithm and particle swarm optimization based QoS routing model of immune particle swarm path planning method for load balancing distribution function and resource consumption function as optimization objective , to meet the bandwidth, delay , cost at the same time under the conditions of a number of QoS indicators for network load path planning, designed to consume as little as possible of network resources , also try to balance the network load distribution , thus avoiding network congestion . Simulation results show the validity and reliability of the method .

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