论文部分内容阅读
针对快速发展的多媒体卫星网络,提出一种新的低地球轨道卫星网络性能的定量研究模型。该模型考虑了星座动态拓扑变化和全球业务需求变化的复杂特点,建立了离散时间下的业务和拓扑映射关系;依据马尔科夫过程理论和卫星链路带宽约束条件,对实时和非实时两种类型业务采用概率分析方法,推导出定量计算阻塞概率、排队时延等网络性能参数的公式。大量仿真结果表明理论分析方法的正确性和有效性。该研究方法可用于多媒体低地球轨道卫星网络QoS路由管理和资源分配设计的参考。
Aiming at the fast developing multimedia satellite network, a new quantitative research model of the performance of low earth orbit satellite network is proposed. The model takes into account the complex features of dynamic topology changes and changes in global business demands and establishes the business and topological mapping relationship in discrete time. According to the Markov process theory and the bandwidth constraints of satellite links, the real-time and non-real-time Type of business using probability analysis method, derived quantitative calculation of blocking probability, queuing delay and other network performance parameters formula. A large number of simulation results show that the theoretical analysis method is correct and effective. The research method can be used as reference for QoS routing management and resource allocation design of multimedia LEO satellite network.