a radio-driven time synchronization protocol in hybrid simulation systems

ISCAS OpenIR

	a radio-driven time synchronization protocol in hybrid simulation systems
	Huang Zhiyu
	2012
会议名称	2012 ACM/IEEE/SCS 26th Workshop on Principles of Advanced and Distributed Simulation, PADS 2012
会议录名称	Proceedings - 2012 ACM/IEEE/SCS 26th Workshop on Principles of Advanced and Distributed Simulation, PADS 2012
页码	190-192
会议日期	July 15, 2012 - July 19, 2012
会议地点	Zhangjiajie, China
收录类别	EI
ISBN	9780769547145
部门归属	(1) Science and Technology on Communication Information Security Control Laboratory Institute of Software Chinese Academy of Sciences China
摘要	Cyber-physical system (CPS) is a system featuring a tight combination and coordination between the system's computational and physical resources. As a CPS representative, the Weather Monitoring and Train Traffic Control Simulation System (WMT2CS2) includes two subsystems: the wireless sensor network front end and the train traffic control simulation subsystem. The sensing front end collects the real-time data of weathers(speeds and directions of winds and rainfalls, etc.), and connects to the simulation subsystem. The purpose of WMT2CS2 is to study the impact of weather on the train traffic control and envisions to enhance the safety of high-speed rail (HSR) system. However, the simulation system design faces new challenges such as accurate and fast time synchronization, fast data/command dissemination, and so on. In this paper, we propose an accurate and low-latency time synchronization protocol based on constructive interference (CI) to apply in the sensing front end of the hybrid simulation systems. As a recently discovered physical layer phenomenon, CI allows multiple nodes transmit and forward an identical packet simultaneously. By leveraging CI, the proposed Radio-Driven Time Synchronization protocol (RDTS) can realize microsecond time synchronization accuracy and milliseconds latency. Moreover, RDTS can directly utilize the time-stamps from the sink node instead of intermediate nodes, which avoids the error caused by the unstable clock of intermediate nodes. © 2012 IEEE.; Cyber-physical system (CPS) is a system featuring a tight combination and coordination between the system's computational and physical resources. As a CPS representative, the Weather Monitoring and Train Traffic Control Simulation System (WMT2CS2) includes two subsystems: the wireless sensor network front end and the train traffic control simulation subsystem. The sensing front end collects the real-time data of weathers(speeds and directions of winds and rainfalls, etc.), and connects to the simulation subsystem. The purpose of WMT2CS2 is to study the impact of weather on the train traffic control and envisions to enhance the safety of high-speed rail (HSR) system. However, the simulation system design faces new challenges such as accurate and fast time synchronization, fast data/command dissemination, and so on. In this paper, we propose an accurate and low-latency time synchronization protocol based on constructive interference (CI) to apply in the sensing front end of the hybrid simulation systems. As a recently discovered physical layer phenomenon, CI allows multiple nodes transmit and forward an identical packet simultaneously. By leveraging CI, the proposed Radio-Driven Time Synchronization protocol (RDTS) can realize microsecond time synchronization accuracy and milliseconds latency. Moreover, RDTS can directly utilize the time-stamps from the sink node instead of intermediate nodes, which avoids the error caused by the unstable clock of intermediate nodes. © 2012 IEEE.
关键词	Embedded Systems Network Layers Sensor Nodes
主办者	IEEE; ACM; SCS; National Natural Science Foundation; Science and Technology on Complex Systems Simulation Laboratory; Sci. Technol. Complex Electron. Syst. Simul. Lab.
语种	英语
内容类型	会议论文
URI标识	http://ir.iscas.ac.cn/handle/311060/15825
专题	中国科学院软件研究所
推荐引用方式 GB/T 7714	Huang Zhiyu. a radio-driven time synchronization protocol in hybrid simulation systems[C],2012:190-192.