共查询到18条相似文献,搜索用时 437 毫秒
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作为移动通信的5G系统架构可以不受电缆安装限制,实现终端设备灵活部署。时间敏感网络(TSN)符合新型工业生产网络“确定时延、不被中断、可靠传输”的要求。将5G和TSN技术有效整合,可进一步优化网络架构方案,满足工业智能化进程中需具有全连接、高稳定性和精准化端到端控制的特征,有望领衔智能工厂网络的未来。本文聚焦智能仓储物流场景,结合仓储物流网络现状和实际业务进行需求分析,提出了基于5G+TSN的网络架构方案,满足拣货区、分拣区、存储区等多个功能分区内大量智能终端设备协同作业对传输的低时延、高可靠和灵活性要求,有效提升仓储物流的执行效率,提高仓储物流管理水平。 相似文献
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5G与时间敏感网络(time sensitive network,TSN)融合部署是实现工业互联网无线化和柔性制造的重要基础,如何实现多类型工业业务和移动业务的共网高质量传输,是5G TSN融合网络需要解决的关键问题。为此,面向工业互联网场景,依据业务特征差异划分工业业务流的类型,设计了一种适配周期性时敏业务和突发性时敏业务的网络切片资源调度策略,提出了基于均匀分布的资源分区调度算法。所提方法通过控制资源预留和资源抢占,在优化无线资源使用的同时,保障了工业业务流的时延,满足了移动业务的传输速率需求。最后,通过仿真实验验证了所提方法在提升业务需求满足度和资源利用率方面的有效性。 相似文献
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介绍确定性网络技术中的5G TSN(时间敏感网络)技术,从5G与TSN网络的融合架构开始,重点分析5G TSN的演进方向,包括内生确定性UE(终端)-UE组网、TSN的灵活授时机制、时钟源的可靠性增强、高可靠传输能力开放、与DetNet互通的L3确定性能力支持、分布式TSN网络管理模型。通过技术演进的展现,明晰相关行业业务应用的具体形态,针对特定的需求,构建更高效的确定性网络。最后,结合当前的技术应用场景,总结5G TSN的现实意义,为相关的技术选型提供一些参考。 相似文献
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随着我国工业领域数字化、智能化转型的不断提速,工业无线技术的应用场景趋向网络中接入设备种类繁多,无线传输要求高可靠性、低时延和高并发传输。针对工业场景无线技术越来越苛刻的要求,在5G技术现有的技术指标基础上,对工业场景下5G技术应用面临的问题进行了分析,总结了在端到端延迟、可靠性、维护性和部署成本等方面的问题,提出了一种无线局域网技术WIA-FA与5G技术融合的解决方案。合理部署工业现场室内无线局域网络与室外广域无线传输网络,最大程度提高无线网络传输的高靠性和低时延方面的性能,降低部署成本和维护难度。 相似文献
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时间敏感网络(TSN)和确定性网络(DetNet)是确定性网络整体解决方案的重要组成部分,目前产业界还缺少这两种技术在大规模联合组网方面的研究。在OMNeT++仿真平台基于时隙调度实现了TSN和DetNet联合组网的确定性转发,并打通了控制器和仿真系统的通道,实现了转控协同的确定性仿真网络。重点介绍了对于仿真系统的改造,以及基于此的大规模跨域场景下确定性业务的端到端时延和抖动性能研究。结果表明,在大规模跨域场景下,时隙调度的机制可以提供端到端的确定性业务保障。 相似文献
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Gagan Nandha Kumar Kostas Katsalis Panagiotis Papadimitriou Paul Pop Georg Carle 《International Journal of Network Management》2023,33(4):e2215
Time-Sensitive Networks (TSN) aims at providing a solid underpinning for the support of application connectivity demands across a wide spectrum of use cases and operational environments, such as industrial automation and automotive networks. However, handling network updates in TSN entails additional challenges, stemming from the need to perform both flow rerouting and TSN schedule reconfiguration. To address this issue, we propose a software-defined network (SDN)-based approach for low-overhead TSN network updates, exploiting segment routing over IPv6 (SRv6) for path control. To this end, we introduce the concept of TSN subgraphs in order to quickly reschedule the flows traversing the problematic area and propose a TSN-aware routing heuristic to minimize the convergence time. We further describe the control plane implementation and its integration into Mininet, which empowers us to conduct a wide range of performance tests. Our evaluation results indicate that our approach yields faster recovery and reduces significantly the number of required reconfigurations upon failures, at the expense of a small SRv6 encoding/decoding overhead. 相似文献
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时间敏感网络(Time-sensitive Networking,TSN)是一种新型确定性网络,具有低时延、低抖动等特点,能够满足现代网络传输控制的要求。流量调度是TSN标准中关键技术之一,用于确保流量传输的服务质量。首先对时间敏感网络的发展背景、重要机制、应用场景进行阐述,着重研究5种时间敏感网络流量调度机制,包括基于时间的整形机制、基于信用值的整形机制、循环队列转发机制、帧抢占机制以及异步流量整形机制;然后,分析了流量调度算法的研究现状,归纳和总结了时间触发(Time-triggered,TT)流和事件触发(Event-triggered,ET)流的调度算法,分析了目前流量调度算法存在的问题;最后,指出了TSN流量调度算法的发展方向和趋势。 相似文献
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The current fragmented ultra reliable and low latency communication (URLLC) research focusing on a certain point was overcome.From the perspective of panoramic view,starting from the application scenarios and requirements,the system architecture,key technologies and solutions of URLLC were analyzed and introduced.Then,the physical layer detection performance requirements,link adaptation,radio resource management,end-to-end diversity solutions and how to integrate with TSN (time sensitive network) were analyzed in depth,and possible candidates were discussed.It hopes to have a thorough and comprehensive understanding of the theoretical research and application of URLLC,and a clear understanding of its challenges,so as to play a key reference for researchers and engineers in the related fields. 相似文献
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5G技术在园区内的推广与商用,创造性地解决小微园区生产生活中的突出问题,满足园区建设的刚性需求,加快以制造业为代表的智慧园区发展。介绍了小微园区和5G技术的特性,从定制组网、TSN、MEC、网络切片等研究5G技术基础设施在小微园区的应用。 相似文献
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Muhammed Enes Bayrakdar 《ETRI Journal》2020,42(1):36-45
A priority‐based data communication approach, developed by employing cognitive radio capacity for sensor nodes in a wireless terrestrial sensor network (TSN), has been proposed. Data sensed by a sensor node—an unlicensed user—were prioritized, taking sensed data importance into account. For data of equal priority, a first come first serve algorithm was used. Non‐preemptive priority scheduling was adopted, in order not to interrupt any ongoing transmissions. Licensed users used a nonpersistent, slotted, carrier sense multiple access (CSMA) technique, while unlicensed sensor nodes used a nonpersistent CSMA technique for lossless data transmission, in an energy‐restricted, TSN environment. Depending on the analytical model, the proposed wireless TSN environment was simulated using Riverbed software, and to analyze sensor network performance, delay, energy, and throughput parameters were examined. Evaluating the proposed approach showed that the average delay for sensed, high priority data was significantly reduced, indicating that maximum throughput had been achieved using wireless sensor nodes with cognitive radio capacity. 相似文献