WiFi-Assisted Control Traffic Offloading in Vehicular Environments

WiFi-Assisted Control Traffic Offloading in Vehicular Environments
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车辆环境中的 WiFi 辅助控制流量卸载

DOI:
10.1109/tvt.2020.2975605
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发表时间:
2020-02
影响因子:
6.8
通讯作者:
Yang Peng
Yang Peng
中科院分区:
计算机科学2区
文献类型:
--
作者:
Hua Qin;Buwen Cao;Weihong Chen;Xiang Xiao;Yang Peng

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针对移动车辆通信,专用短距离通信(DSRC)无线技术在车载自组织网络(vanet)中得到了广泛的应用。虽然DSRC可以为各种VANET应用提供可靠、低延迟的通信,但IEEE 802.11p标准化的多通道操作存在控制信道的高争用问题,特别是在流量密集的场景下。同时,WiFi作为一种用于VANET通信的传统无线技术,在车辆行驶过程中往往得不到充分利用。在本文中,我们提出了一种创新的方法,当控制流量较密集时,可以有效地将控制帧从DSRC卸载到WiFi上,从而显著提高控制流量的吞吐量(仿真中在中等流量密度下约为28.7%)。
Targeting mobile vehicle communications, Dedicated Short Range Communications (DSRC) wireless technology has been widely used in Vehicular Ad-hoc Networks (VANETs). Though DSRC can provide reliable and low-latency communications for various VANET applications, the multi-channel operations standardized by IEEE 802.11p suffer from high contention on control channel, especially in dense traffic scenarios. Meanwhile, as a conventional wireless technology for VANET communications, WiFi is often underutilized when a vehicle is on road. In this paper, we propose an innovative approach that can effectively offload control frames from DSRC to WiFi when the control traffic is dense, resulting in significantly improved throughput of control traffic (about 28.7% under moderate traffic density in simulation).
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