VANET Cross-Layer Routing

Nowadays, Vehicular ad hoc Networks (VANETs) gained a significant place in Intelligent Transport Systems (ITS). Their objective is to provide road users with useful services such as safety, infotainment and traffic management, by integrating information and communication technology into vehicles and transport infrastructure. As a result, the design of an efficient VANET routing protocol is very important. Traditional architecture of the network impose particular communication solution implementation. This implementation often fail to fully support the constraints of VANET like topology dynamic changes. The cross-layer design paradigm was introduced as an alternative to develop more efficient and robust communication protocols. This paper presents an overview of the main works that have applied a cross-layer technique to improve the routing function of a VANET.