Location-Based Multichannel-Usage for ITS-G5 Car-to-Car Communication

Beside E-mobility and autonomous driving, the connectivity of vehicles is the major topics in research activities in the automotive industry, today. The ITS-G5 standards family describes a Car-to-Car communication solution for Europe, based on the IEEE 802.11p WIFI-standard using 7 communication channels at 5.9 GHz. In this paper we propose an idea of location-based channel-selection. A vehicle selects the channel depending on its position and an associated virtual radio cell. The location-based channel usage shall reduce the local channel throughput and shall allow for a content- and situation dependent choice of the dissemination area. A simulation of urban traffic was implemented to create a significant channel congestion caused by a high number of moving vehicles. For comparison to the proposed approach, two other setups were implemented, an approach without throughput control mechanism and one with a Decentralized Congestion Control (DCC) algorithm.