SEFF: A scalable and efficient distributed file sharing technique in Vehicular Ad Hoc Networks

Using the new wireless capabilities in vehicles, various applications have appeared in Vehicular Ad Hoc Networks (VANETs). Multimedia data sharing is one of such applications, which has recently been given so much attention. Most presented schemes in this field are focused on direct opportunistic meetings between vehicles or request/response broadcast in the whole network, which are inefficient and un-scalable. In this paper, we propose SEFF (a Scalable and EFficient distributed File sharing technique) that increases efficiency and scalability via taking advantages of BitTorrent protocol and consistent hashing technique. The results of simulations show that our approach increases the received file ratio, decreases total download time of files, and consequently can enhance efficiency and performance.