论文部分内容阅读
当前的研究表明,许多实际网络如通信网、Internet的路由层、AS层以及城市交通网、航空网等都具有无标度特性,因此无标度网络的拥塞控制是一个值得研究的有实际意义的问题.本文建立了一个典型的无标度网络模型,通过仿真交通流量在网络中的行为特性,结合网络物理特性及路由策略来研究网络拥塞及其控制方法.研究表明网络拓扑的改变对网络性能有较大的影响;动态路由策略较静态路由策略更能避免网络拥塞;在进行带宽分配、节点容量设置及节点处理速度配置时必须考虑节点度才能更好地提高网络性能,避免网络拥塞.本文的研究成果可为网络物理配置及路由机制设计提供基础.
The current research shows that many practical networks such as communication network, routing layer of Internet, AS layer, urban traffic network and aeronautical network all have scale-free characteristic, so congestion-free scale-controlled network is worth studying This paper establishes a typical scale-free network model to study network congestion and its control methods by simulating traffic flow behavior in the network, combined with the network physical characteristics and routing strategies.Research shows that the network topology changes to the network The dynamic routing strategy can avoid the network congestion more than the static routing strategy. The node degree must be considered in bandwidth allocation, node capacity setting and node processing speed configuration to better improve the network performance and avoid network congestion. The research results of this paper can provide the foundation for the network physical configuration and routing mechanism design.