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随着信息技术的发展,以物与物作为通信主体的场景需求不断增加,如工厂自动化控制、自动驾驶等,这类通信对数据传输时延的要求远远超出了传统以太网的可控范围,时间敏感网络应运而生。时间敏感网络是以标准以太网为网络基础,提供确定性信息传输的标准化技术,通过时间感知的调度机制最小化抖动,并为时间敏感应用提供可靠的数据传输保障。通过对时间敏感网络相关国际标准的说明,介绍了其核心特性及机制,并在车载网络、工业互联网、航空电子网络和移动前传网络等应用场景进行了分析和研究。 相似文献
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With the increase of network complexity,the flexibility of network control and management becomes a nontrivial problem.Both Software Defined Network(SDN) and Autonomic Network technologies are sophisticated technologies for the network control and management.These two technologies could be combined together to construct a software defined self-managing solution for the future network.An autonomic QoS management mechanism in Software Defined Network(AQSDN) is proposed in this paper.In AQSDN,the various QoS features can be configured autonomically in an OpenFlow switch through extending the OpenFlow and OF-Config protocols.Based on AQSDN,a novel packet context-aware QoS model(PCaQoS) is also introduced for improving the network QoS.PCaQoS takes packet context into account when packet is marked and managed into forwarding queues.The implementation of a video application's prototype which evaluates the self-configuration feature of the AQSDN and the enhancement ability of the PCaQoS is presented in order to validate this design. 相似文献
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