RSSI based Power Control Algorithm for C-V2X Mode 4

Jin-Mo Yang, Byungjun Kang, Saewoong Bahk

Abstract: We propose transmission power control algorithm for Cellular-Vehicle-to-everything (C-V2X) mode 4, based on standard-compliant sensing scheme. We show that standard resource allocation scheme for Vehicle-to-vehicle (V2V) communication mode 4, with fixed transmission power, has room for improvement. Assuming channel reciprocity, proposed algorithm estimates neighbor's SINR and controls transmission power based on the estimation. We show that proposed scheme enhances system level PRR and also, performance of the algorithm increases as vehicles get more dense.