摘要
为衡量卫星网络终端在应急及通信中的快速响应能力,通过对终端通信流程的分析,基于排队论建立一种卫星网络终端业务的响应时间模型。对响应时间进行分阶段描述,认为响应时间包含终端时延和空间链路时延,给出各阶段时延的数学表达式。通过典型值仿真分析业务响应时间与网络拓扑模型、分组长度、网络带宽及网络负载的关系。EXata和Matlab仿真结果表明,该模型能准确描述卫星网络终端业务响应时间,能有效反映各种因素对响应时间的影响。
To measure the satellite network terminals＇ rapid response ability in emergency and communication,through the analysis of the terminal communication process,one kind of response time model of the satellite network terminal service based on the queueing theory was established.The response time was divided into stages to be described,which contained terminal delay and space link delay.The mathematical expressions of referring delays were given.The relationships between the response time and the network topology model,packet length,network bandwidth and network load were simulated and analyzed through typical values.The EXata and Matlab simulation results show that the proposed model can better describe the satellite network terminal service response time and effectively reflect all kinds of factors＇ influence on the response time.
出处
《计算机工程与设计》
北大核心
2016年第3期586-590,共5页
Computer Engineering and Design
基金
国家自然科学基金项目(91338104)
辽宁省自然科学基金项目(2014020131)
关键词
卫星网络终端
响应时间
终端时延
空间链路时延
排队论
satellite network terminal
response time
terminal delay
space link delay
queuing theory
