Delay and Power consumption Analysis for Queue State Dependent Service Rate Control in WirelessHart System

To solve the problem of power supply limitation of machines working in wireless industry automation, we evaluated the workload aware service rate control design implanted in the medium access control component of these small devices and proposed a bio-intelligence based algorithm to optimise the design regarding the delay constraint while minimizing power consumption. To achieve this, we provide an accurate analysis of the delay cost of this design and for the first time pinpoint an exact departure process model in order to evaluate the overall delay cost in consideration of the medium access time.