【摘要】 卫星终端群内通信时,存在多终端多业务并发现象,对资源有限的卫星网络带宽提出了要求。针对上述问题,利用时间间隔服从重尾分布的二级ON/OFF叠加模型,仿真了多终端多业务并发流量汇聚的过程,以及多终端多业务并发时终端群的丢包率、并发业务数、并发强度、时延和时延抖动与带宽的关系。通过仿真,得出了终端群丢包率、并发业务数、并发强度、时延、时延抖动对带宽的需求,并提出了卫星终端群内通信时,特定条件下卫星网络带宽的具体大小,可为终端群在卫星网络中的应用提供理论基础。更多还原

【Abstract】 When Satellite terminals communicate within the group,there is a phenomenon-multi-service multiterminal concurrence,which requires reasonable bandwidth for resource-limited satellite network. To solve this problem,the paper uses secondary ON / OFF overlay model,whose interval is subject to heavy-tailed distribution,to simulate concurrent multi-terminal multi-service traffic aggregation process; and discusses the relationship among packet loss rate,the number of concurrent operations,concurrent strength,delay,delay jitter,and effective bandwidth of the terminal group with the multi-service multi-terminal concurrence. Through simulation,effective bandwidth is required in basis of packet loss rate,the number of concurrent operations,concurrent strength,delay,and delay jitter.On this basis,we propose specific size of bandwidth under certain conditions when satellite terminals communicate within the group,which can provide a theoretical basis for the terminal group in Satellite Network.更多还原