SBRM: Score-Based Routing Mechanism for vehicle ad hoc network

In this paper, we propose SBRM (Score-Based Routing Mechanism), a hybrid forwarding protocol based on the use of a modified contention-based forwarding coupled with carry then forward mechanism. Our solution combines different forwarding schemes and takes profit from advantages of each mechanism. Every node calculates its own Score to decide if it will be the next forwarder. The Score computation takes into account the sender and destination locations, the location of the forwarder node itself, its direction, speed and the road traffic density. A score function is defined to minimize the packet delay and to avoid spatial and temporal holes.