论文标题
将网络物理控制应用要求转换为网络级别参数
Translating Cyber-Physical Control Application Requirements to Network level Parameters
论文作者
论文摘要
网络物理控制应用对基础通信系统的可靠性和潜伏期施加了严格的要求。因此,它们主要是使用通信服务高度可预测的有线渠道实施的。然而,第五代移动网络(5G)设想满足这种严格的要求。此类应用程序的要求通常在应用程序层上定义。但是,网络物理控制应用程序通常可以忍受稀疏的数据包损失,因此,这些应用程序级别要求在基础无线网络上施加了哪些配置和设置。在本文中,我们将基本指标从可靠性文献应用于无线通信,并在确定性到达中的这些指标的应用程序级别要求和网络级别参数之间得出映射功能。我们的映射功能使网络设计人员能够实现端到端的性能(如目标应用程序所观察到的那样)。它为网络控制器提供了洞察力,以启用更多可靠性增强功能(例如重复),如果指标低于要求,或者启用了增加网络利用的功能,则否则。我们通过对工厂自动化方案的现实和详细模拟来评估我们的理论结果。我们的仿真结果证实了在各种爆发误差和负载条件下理论框架的生存力。
Cyber-physical control applications impose strict requirements on the reliability and latency of the underlying communication system. Hence, they have been mostly implemented using wired channels where the communication service is highly predictable. Nevertheless, fulfilling such stringent demands is envisioned with the fifth generation of mobile networks (5G). The requirements of such applications are often defined on the application layer. However, cyber-physical control applications can usually tolerate sparse packet loss, and therefore it is not at all obvious what configurations and settings these application level requirements impose on the underlying wireless network. In this paper, we apply the fundamental metrics from reliability literature to wireless communications and derive a mapping function between application level requirements and network level parameters for those metrics under deterministic arrivals. Our mapping function enables network designers to realize the end-to-end performance (as the target application observes it). It provides insights to the network controller to either enable more reliability enhancement features (e.g., repetition), if the metrics are below requirements, or to enable features increasing network utilization, otherwise. We evaluate our theoretical results by realistic and detailed simulations of a factory automation scenario. Our simulation results confirm the viability of the theoretical framework under various burst error tolerance and load conditions.