An approach for selective beacon forwarding to improve cooperative awareness
An approach for selective beacon forwarding to improve cooperative awareness
复制标题
一种提高合作意识的选择性信标转发方法
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
G. Schäfer
中科院分区：
文献类型：
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作者：
R. Schmidt;Robert Lasowski;Tim Leinmiiller;Claudia Linnhoff;G. Schäfer
合作意识是通过车辆之间频繁的状态交换来建立的。在车辆数量较多、使用频率较高的通信信道的情况下，通信和合作意识的丢包率增加。到目前为止，信标转发的重点是扩展V2V通信的范围，这在大多数场景下并不一定需要。本文提出了一种激励选择性信标转发的方法，以提高高负载情况下协同感知的可靠性。我们定义了一个度量指标来衡量合作感知的质量，并通过仿真研究比较了不同的静态信标速率。特别是在高负载情况下，我们评估了信标的选择性转发，以克服由于干扰而导致的感知退化，即使在短距离也会导致数据包丢失。我们表明，我们的方法在额外消息方面只造成轻微的开销，并且转发信息的时间不到信标间隔的一半。
Cooperative awareness is established by vehicles exchanging their status frequently. In situations where a high number of vehicles access the communication channel with high frequency, communication and cooperative awareness suffer from increased packet loss. So far, forwarding of beacons focuses on extending the range of V2V communication which is not necessarily needed in most scenarios. In this paper, we motivate selective beacon forwarding to improve the reliability of cooperative awareness in high load situations. We define a metric to measure the quality of cooperative awareness and compare different static beacon rates by a simulation study. Especially in high load situations, we evaluate selective forwarding of beacons to overcome the awareness degradation due to interference, leading to packet loss even at short distances. We show that our approach causes only slight overhead in terms of additional messages and that the age of forwarded information is less than half the beacon interval.