Security in VANETs: Lightweight Protocol for Group-of-Vehicles Masters (LPGVM)

This paper focuses on the Vehicle Ad-hoc NETwork (VANET), especially on the security of information exchanged in the network. We therefore propose in this document a secure communication protocol, based on VANET network standards. A lot of research is under way to make possible the large-scale deployment of VANETs. It is with this idea that we decided to propose a communication protocol based on an architecture organized in groups. For each group of vehicles, a Master is appointed who is the leader of the group. In our proposal, only a group Master can communicate with an RSU (Roadside Unit). In the literature, in general, the group leader takes care alone of managing the group. Here we involve the RSU in the group management to reduce the workload of the Master. In general, the organization of the group network lighten the workload of the RSU. But our proposal will also reduce the burden of the Master and thus significantly improve the performance of the network.