卫星网络拓扑时变性对网络性能影响分析

Analysis of the Effect of Satellite Network Topological Time-varying on the Performance of Network

卫星网络的拓扑时变性会影响网络的性能,导致现有的许多网络技术在卫星网络上不能有效地使用。文中从卫星网络特点出发,给出一个可以反映卫星网络时变拓扑特点的网络模型。利用该模型具体地分析了拓扑时变性对卫星网络性能的影响,并进行相应的仿真试验,指出造成这些影响的主要因素是卫星节点间的切换,而卫星网络的连续状态主要影响节点间的传输时延大小,且变化缓慢。

The toplolgical time-varying of satellite network is able to affect the performance of network,so a lots of existing network techniques can not be applied to satellite network .In this paper, the characteristic of satellite network is analyzed,and a network model which can express the characteristic of satellite network topological time-varying is proposed.Based on this model,the effect of topological time-varying on the performance of satellite network is analyzed and some simulation are given.It is indicated that the main factor that affect the performance of satellite network is the switching of the satellite node,and the continuous state of satellite network mainly affect the transport delay of the satellite node which the change is small.