Inter-Vehicle Communication (IVC) is bringing connected and cooperative mobility closer to reality. Vehicles today are able to produce huge amounts of information, known in the literature as Floating Car Data (FCD), containing status information gathered from sensing the internal condition of the vehicle and the external environment. Adding networking capabilities to vehicles allows them to share this information among themselves and with the infrastructure. Collecting real-time FCD information from vehicles opens up the possibility of having access to an enormous amount of useful information that can boost the development of innovative services and applications in the domain of Intelligent Transportation System (ITS). In this paper we propose several solutions to efficiently collect real-time FCD information in Dedicated Short-Range Communication (DSRC)-enabled Vehicular Ad Hoc Networks (VANETs). The goal is to improve the efficiency of the FCD collection operation while keeping the impact on the DSRC communication channel as low as possible. We do this by exploiting a slightly modified version of a standardized data dissemination protocol to create a backbone of relaying vehicles that, by following local rules, generate a multi-hop broadcast wave of collected FCD messages. The proposed protocols are evaluated via realistic simulations under different vehicular densities and urban scenarios.

车辆间通信（IVC）使互联互通的移动性更加接近现实。今天的车辆能够产生大量信息，在文献中称为“浮动汽车数据”（FCD），其中包含从感知车辆内部状况和外部环境中收集到的状态信息。为车辆增加联网功能后，他们就可以在车辆之间以及与基础设施共享此信息。从车辆收集实时FCD信息为获得访问大量有用信息提供了可能性，这些信息可以促进智能运输系统（ITS）领域创新服务和应用的发展。在本文中，我们提出了几种解决方案，以在启用专用短程通信（DSRC）的车载自组织网络（VANET）中有效收集实时FCD信息。目的是提高FCD收集操作的效率，同时保持对DSRC通信信道的影响尽可能小。为此，我们利用标准化数据分发协议的略微修改版本来创建中继车辆的主干网，该中继网根据本地规则生成收集到的FCD消息的多跳广播波。通过在不同的车辆密度和城市情景下的真实模拟来评估所提出的协议。目的是提高FCD收集操作的效率，同时保持对DSRC通信信道的影响尽可能小。为此，我们利用标准化数据分发协议的略微修改版本来创建中继车辆的主干网，该中继网根据本地规则生成收集到的FCD消息的多跳广播波。通过在不同的车辆密度和城市情景下的真实模拟来评估所提出的协议。目的是提高FCD收集操作的效率，同时保持对DSRC通信信道的影响尽可能小。为此，我们利用标准化数据分发协议的略微修改版本来创建中继车辆的主干网，该中继网根据本地规则生成收集到的FCD消息的多跳广播波。通过在不同的车辆密度和城市情景下的真实模拟来评估所提出的协议。