论文标题
IEEE 802.1QBV时间敏感网络之间的大规模确定性传输
Large-scale Deterministic Transmission among IEEE 802.1Qbv Time-Sensitive Networks
论文作者
论文摘要
IEEE 802.1QBV(TAS)是时间敏感网络(TSN)中最广泛使用的技术,旨在在工业局域网中提供有限的传输延迟和超低式抖动。随着新兴技术的开发(例如云计算),出现了许多广泛的时间敏感网络服务,例如工厂自动化,连接的车辆和智能电网。然而,TAS是用于本地网络的第二层技术,无法提供大规模的确定性传输。为了解决此问题,本文提出了一个包含访问网络和核心网络的分层网络。访问网络执行TA,以汇总时间敏感的流量。在核心网络中,我们利用DIP(骨干网络的众所周知的确定性网络机制)来实现长距离确定性传输。由于TAS和DIP之间的差异,我们在访问网络边缘和核心网络的边缘设计了跨域传输机制,以实现无缝的确定性传输。我们还制定了端到端的调度,以最大程度地提高所接受的时间敏感流量的数量。实验模拟表明,即使在高负载方案中,提出的网络也可以实现端到端的确定性传输。
IEEE 802.1Qbv (TAS) is the most widely used technique in Time-Sensitive Networking (TSN) which aims to provide bounded transmission delays and ultra-low jitters in industrial local area networks. With the development of emerging technologies (e.g., cloud computing), many wide-range time-sensitive network services emerge, such as factory automation, connected vehicles, and smart grids. Nevertheless, TAS is a Layer 2 technique for local networks, and cannot provide large-scale deterministic transmission. To tackle this problem, this paper proposes a hierarchical network containing access networks and a core network. Access networks perform TAS to aggregate time-sensitive traffic. In the core network, we exploit DIP (a well-known deterministic networking mechanism for backbone networks) to achieve long-distance deterministic transmission. Due to the differences between TAS and DIP, we design cross-domain transmission mechanisms at the edge of access networks and the core network to achieve seamless deterministic transmission. We also formulate the end-to-end scheduling to maximize the amount of accepted time-sensitive traffic. Experimental simulations show that the proposed network can achieve end-to-end deterministic transmission even in high-loaded scenarios.