Performance Comparison between Bluetooth Mesh Network with and without Preemption in Relay Nodes

A performance comparison between two different implementations of message management of the scanning and advertising phases in relay nodes on Bluetooth Mesh network is analyzed. The main difference between the two is the introduction of a preemption principle in the management. The metric used is the end-to-end packet delivery ratio between individual source-destination pairs. The comparison examines different network topologies in terms of the number of transmission sources and coverage range, but also takes into account the influence of the width of the relay nodes' scan interval, which is closely related to the implementations examined. For the purposes of this work the Bluetooth Mesh compliant simulator provided by Mathworks has been used. The experimental results have shown that the use of message management without preemption allows better reliability performance than the case with preemption in every situation considered.