Abstract
Background: VANETs demand a fast and reliable data transmission in real time for safety concerns, which is challenging due to vehicles’ fast movement, network topology dynamics, and communication network varieties. This paper reviews current scientific and patent literature and proposes an efficient and adaptive broadcast protocol using neighbor nodes ’distances and driving directions to determine packet forwarding nodes. The protocol is capable of discovering cross roads utilizing neighbor nodes’ moving direction information, therefore suitable for broader application scenarios including intersections and straight road. Keywords: VANET, broadcast protocol, neighbor node, distance, driving direction, data transmission.
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