Son Sunghwa, Park Kyung-Joon
Department of Information and Communication Engineering, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Dalseong-gun, Daegu 42988, Korea.
Sensors (Basel). 2019 Jul 11;19(14):3061. doi: 10.3390/s19143061.
To improve vehicle safety, vehicular ad hoc networks (VANETs) periodically broadcast safety messages known as beacons. Consequently, it becomes safety critical to guarantee the timely reception of periodic beacons under the time-varying environments of VANET. However, existing approaches typically measure the packet delivery ratio, which is a time-average metric that does not consider the temporal behavior associated with beacon reception. In this paper, to properly reflect the temporal aspect of beacon reception, we propose a congestion control algorithm, Beacon inter-reception time Ensured Adaptive Transmission (BEAT). The proposed algorithm tightly regulates the beacon inter-reception time compared to conventional techniques, which can significantly improve vehicle safety. Our simulation results demonstrate the effectiveness of the proposed scheme.
为提高车辆安全性，车载自组织网络（VANETs）会定期广播称为信标的安全消息。因此，在VANET的时变环境下保证定期信标的及时接收就成为安全关键。然而，现有方法通常测量分组交付率，这是一个时间平均指标，没有考虑与信标接收相关的时间行为。在本文中，为了正确反映信标接收的时间方面，我们提出了一种拥塞控制算法，即信标接收间隔时间确保自适应传输（BEAT）。与传统技术相比，该算法严格调节信标接收间隔时间，这可以显著提高车辆安全性。我们的仿真结果证明了该方案的有效性。
