An Analysis on the Minimum Communication Distance for Safe Connected Brakes in Rural LOS Scenarios under IEEE 802.11p

Zhanle Zhao, Yuen Kwan Mo, Xizhe Zhang, Siddartha Khastgir, Matthew D. Higgins

Abstract: The impact of brake safety is particularly serious in Intelligent vehicles, and braking performance can be improved by introducing Vehicle to Vehicle (V2V) communications. This paper proposes a methodology for an optimisation analysis on vehicle transmitter power and channel delay following the IEEE 802.11p standard to determine the minimum required V2V communications distance for maintaining a safe connected brake in a rural Line-of-sight driving scenario. We have built up a methodology on simulating the maximum delay from Packet Error Rates to analyse under the worst situation. After being optimised for different vehicle initial speeds, the minimum required transmitter power for a smooth and safe brake action is determined.