Typhoon: Resource Sharing Protocol for Metropolitan Vehicular Ad Hoc Networks

In this paper, we propose a realistic resource sharing protocol for VANET. The main idea of our protocol comes from typhoons. Typhoons move according to their eyes\´ mobility, i.e., quorums which are responsible for a given resource holder/requester "moves" according to the resource holder\´s/ requester\´s mobility. Our protocol exploits spatial locality between requesters and resource holders. When resource requesters get their desired resources, they are able to be new resource holders. For hot-resources, requesters are so numerous that the spatial locality is much enhanced over time. Besides, lots of applications (e.g., available parking slot information) in VANET are location-aware which have spatial locality between requesters and resource holders. By the aid of the spatial locality, resource holders/requesters share/query sources in their vicinity in our protocol. Simulation results show that our protocol has lower search latency and well scalability comparing to the previous work. Besides, due to that the spatial locality is enhanced over time, successful rate increases over time.