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Faster information propagation on highways: A virtual MIMO approach

机译：高速公路上更快的信息传播：虚拟MIMO方法

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In vehicular communications, traffic-related information should be spread over the network as quickly as possible to maintain a safer transportation system. This motivates us to develop more efficient information propagation schemes. In this paper, we propose a novel cluster-based cooperative information forwarding scheme, in which the vehicles opportunistically form virtual antenna arrays to boost one-hop transmission range and therefore accelerate information propagation along the highway. Both closed-form results of the transmission range gain and the improved Information Propagation Speed (IPS) are derived and verified by simulations. It is observed that the proposed scheme demonstrates the most significant IPS gain in moderate traffic scenarios, whereas too dense or too sparse vehicle density results in less gain. Moreover, it is also shown that increased mobility offers more contact opportunities and thus facilitates information propagation.
机译：在车辆通信中，与交通有关的信息应尽快通过网络传播，以维护更安全的运输系统。这激励我们开发更有效的信息传播方案。在本文中，我们提出了一种基于集群的新型协作信息转发方案，该方案中的车辆有机会形成虚拟天线阵列，以扩大单跳传输范围，从而加快沿高速公路的信息传播。传输距离增益的封闭形式结果和改进的信息传播速度（IPS）都可以通过仿真得出和验证。可以看出，所提出的方案在中等流量的情况下显示出最显着的IPS增益，而过于密集或稀疏的车辆密度会导致较小的增益。此外，还显示出增加的移动性提供了更多的接触机会，从而促进了信息传播。

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