HAPS-GEO卫星空间IP网络结构及端到端QoS方案研究

摘要

Firstly, in this work, with analyzing the characteristics of the HAPS and CEO satellite, this paper developed the basic framework of the IP-oriented HAPS-CEO satellite networks, and then described functions of the relay stations on different space. After analyzing the capability of traditional QoS scheme ( IntServ and DifiServ) , proposed the end to end QoS scheme for our networks,which based on balancing the virtues of IntServ and DiffServ. After that, the performance of our networks, such as average delay of end to end, packet loss rate,was given by simulation using OPNET.%研究了基于临空平台和GEO卫星的空间IP网络一体化结构以及端到端的服务质量(QoS)方案.依据临空平台和卫星通信网络的特点,首先设计了临空平台-GEO卫星空间IP网络的基本结构,进一步分析了各中转节点的处理职能、空间链路组成形式和建立过程.在通信业务的划分基础上,分析了传统IP网络的端到端QoS方案—综合服务(IntServ)和区分服务(DiffServ)的优缺点,结合临空平台-GEO卫星空间IP网络结构特点,提出了IntServ/DiffServ分区结合端到端QoS方案.通过OPNET仿真,分析了网络的平均端到端时延、丢包率、资源利用率以及RSVP数据包数量等系统性能指标,验证了所提出的QoS方案的可行性.