论文标题

基于可扩展阻尼器的确定性网络

Scalable Damper-based Deterministic Networking

论文作者

Naghmouchi, M. Yassine, Ren, Shoushou, Medagliani, Paolo, Martin, Sébastien, Leguay, Jérémie

论文摘要

通过5G网络,确定性保证正在成为关键推动器。在这种情况下,我们为大规模确定性IP网络(D-LDN)提供了基于可扩展的阻尼器架构,该体系结构符合端到端延迟和抖动所需的界限。这项工作扩展了原始的LDN体系结构,其中流动在入口网关处形状,并计划在每个链路上使用异步和循环开放在每个链路上进行传输,又计划了栅极控制的队列。为了进一步放松设备之间的时钟同步需求,我们使用由抖动调节器组成的阻尼器来控制爆发的流动,以在每个跳跃时提供恒定的目标延迟。我们详细介绍了如何在所有节点(网关和​​核心)上实现数据平面功能,并得出如何计算端到端延迟和抖动。对于控制平面,我们提出了一种列生成算法,以快速采取入院控制决策并最大化所接受的吞吐量。对于一组流,它决定接受并选择最佳的塑形和路由策略。通过模拟中的概念验证实现,我们验证了体系结构是否符合承诺的保证,并且控制平面可以在大规模上有效地运行。

With 5G networking, deterministic guarantees are emerging as a key enabler. In this context, we present a scalable Damper-based architecture for Large-scale Deterministic IP Networks (D-LDN) that meets required bounds on end-to-end delay and jitter. This work extends the original LDN architecture, where flows are shaped at ingress gateways and scheduled for transmission at each link using an asynchronous and cyclic opening of gate-controlled queues. To further relax the need for clock synchronization between devices, we use dampers, that consist in jitter regulators, to control the burstiness flows to provide a constant target delay at each hop. We introduce in details how data plane functionalities are implemented at all nodes (gateways and core) and we derive how the end-to-end delay and jitter are calculated. For the control plane, we propose a column generation algorithm to quickly take admission control decisions and maximize the accepted throughput. For a set of flows, it determines acceptance and selects the best shaping and routing policy. Through a proof-of-concept implementation in simulation, we verify that the architecture meets promised guarantees and that the control plane can operate efficiently at large-scale.

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