关键词: 内容分发, 网络编码, 存储转发, 车-车通信网络

Abstract: The data shared on one direction road usually are not same with that shared on opposite direction roadway, in order to mitigate the influence of packet loss and utilize the store-and-forward capability of mobile vehicles, this paper applies network coding and the simple store-and-forward mechanism using directional antennas to accelerate disseminating for this two-way road scenario. Vehicles store packets when passing the disseminator of opposite roadway, then when taking disseminator role they forward packets that vehicles on opposite roadway are interested in and transmit packets vehicles on same roadway are interested in at same time. Simulation shows that, for different data disseminating, the gain is comparable with that same data are disseminated without forwarding, and for same data disseminating, the gain can exceed twice as much as that without forwarding.

Key words: data disseminating, network coding, store-and-forward, vehicle-to-vehicle networks