摘要
为了满足实时和高可靠数据传输需求,地面网络以太网标准引入时间敏感网络(time-sensitive networking,TSN),通过流量整形、流量调度等手段有效降低时延抖动。然而,地面网络的部署受限于环境因素,难以覆盖偏远地区和空中服务对象,无法满足对时延抖动的严格要求。考虑低轨卫星网络具有广域立体覆盖优势,开展了TSN技术在低轨卫星网络中的适用性评估。利用OMNeT++构建了低轨通信网络时间确定性技术仿真平台,详细介绍了仿真平台各功能模块的设计原理与工作流程。同时,针对关键机制进行了深入分析。通过仿真评估,验证TSN技术在保障低轨卫星网络时间敏感业务端到端时延、时延抖动、数据包到达率的性能优势。
In order to meet the demand for real-time and highly reliable data transmission,the Ethernet standard for terrestrial networks introduces time-sensitive networking(TSN),which effectively reduces delay jitter by the means of traffic shaping and traffic scheduling.However,the deployment of terrestrial networks is limited by environmental factors,and it is difficult to cover remote areas and airborne service objects,which can’t meet the strict requirements for delay jitter.Considering that low-orbit satellite networks have the advantage of wide-area three-dimensional coverage,the applicability assessment of TSN technology in low-orbit satellite networks was carried out.OMNeT++was used to construct a simulation platform for time-deterministic technology in low-orbit communication networks,and the design principles and workflow of each functional module of the simulation platform were introduced in detail.Meanwhile,the key mechanisms were analyzed in depth.Through simulation evaluation,it verifies the performance advantages of TSN technology in guaranteeing the end-to-end delay,delay jitter,and packet arrival rate of timesensitive services in low-orbit satellite networks.
作者
赵崇尧
孙耀华
冯昕澳
彭木根
ZHAO Chongyao;SUN Yaohua;FENG Xin’ao;PENG Mugen(State Key Laboratory of Networking and Switching Technology,Beijing University of Posts and Telecommunications,Beijing 100876,China)
出处
《电信科学》
北大核心
2025年第5期43-59,共17页
Telecommunications Science
基金
中国通信学会青年人才托举项目(No.2021QNRC001)。
关键词
低轨卫星网络
时间敏感网络
星间确定性传输
low-orbit satellite network
time-sensitive networking
interplanetary deterministic transmission
