End-to-End Delay Analysis for Fixed Priority Scheduling in WirelessHART Networks

—The WirelessHART standard has been specifically designed for real-time communication between sensor and actuator devices for industrial process monitoring and control. End-toend communication delay analysis for WirelessHART networks is required for acceptance test of real-time data flows from sensors to actuators and for workload adjustment in response to network dynamics. In this paper, we map the scheduling of real-time periodic data flows in a WirelessHART network to realtime multiprocessor scheduling. We, then, exploit the response time analysis for multiprocessor scheduling and propose a novel method for the end-to-end delay analysis of the real-time flows that are scheduled using a fixed priority scheduling policy in a WirelessHART network. Simulations based on both random topologies and real network topologies of a physical testbed demonstrate the efficacy of our end-to-end delay analysis in terms of acceptance ratio under various fixed priority scheduling policies.

• Type: Journal
• Year: 2011
• Where: RTAS
• Authors: Abusayeed Saifullah, You Xu, Chenyang Lu, Yixin Chen
• Keywords: Actuator Devices, Embedded Systems, Real Time Data, Response Time Analysis, RTAS 2011