Live VANET CDN: Adaptive Data Dissemination Scheme for Location-Dependent Data in VANETs
Live VANET CDN: Adaptive Data Dissemination Scheme for Location-Dependent Data in VANETs
复制标题
实时 VANET CDN：VANET 中位置相关数据的自适应数据传播方案
DOI：
10.1109/vnc.2013.6737595
复制
发表时间：
2013
期刊：
影响因子：
--
通讯作者：
and Susumu Ishihara
中科院分区：
文献类型：
--
作者：
Nobuhiro Nakamura;Yuya Niimi;and Susumu Ishihara
本文提出了一种有效的方案来共享与位置相关的数据，例如交通事故和拥堵的图片，以使用车载自组织网络来协助汽车驾驶员。假设驾驶员在遇到表明发生事故或陷入拥堵的场景时请求与位置相关的数据，则多个请求将从同一区域临时发送到一个位置。如果持有所需数据项的车辆将其发送给每个请求者，则相同的数据项会被多次发送到同一区域。因此，同一数据项浪费了通信资源。我们提出了 Live VANET CDN，这是一种位置相关的数据共享方案，其中车辆在根据数据项的需求进行调整的区域内传播位置相关的数据项的副本。仿真结果表明，与采用固定数据传播区域的数据传播方案相比，该方案提高了小流量数据请求的成功率。
This paper proposes an efficient scheme for sharing location dependent data such as pictures of traffic accidents and congestion for assisting car drivers using vehicular ad hoc networks. Assuming that drivers request location-dependent data when they face a scene indicating an accident or they are caught in congestion, multiple requests will be sent from the same area to a location temporarily. If vehicles holding the demanded data item send it to each requester, the same data item is sent to the same area many times. Due to this, the communication resource is wasted by the same data item. We propose Live VANET CDN, a location-dependent data sharing scheme, in which vehicles disseminate copies of location-dependent data item within an area which is adjusted according to demand for the data item. Simulation results show that the proposed scheme improves the success ratio of data requests with small traffic compared with data dissemination schemes that use fixed data dissemination area.