MAC Channel Congestion Control Mechanism in IEEE 802.11p/WAVE Vehicle Networks
MAC Channel Congestion Control Mechanism in IEEE 802.11p/WAVE Vehicle Networks
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DOI：
10.1109/vetecf.2011.6092949
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发表时间：
2011-12
期刊：
影响因子：
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通讯作者：
Chih-Wei Hsu;Chung-Hsien Hsu;Huei-Ru Tseng
中科院分区：
文献类型：
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作者：
Chih-Wei Hsu;Chung-Hsien Hsu;Huei-Ru Tseng
IEEE 802.11p/WAVE（Wireless Access in Vehicular Environments）是一个新兴的标准族，旨在支持车辆自组织网络（VANESTs）中的无线接入。在这种环境中，数据和控制分组的广播预计是至关重要的。安全相关和非安全应用都依赖于广播来交换数据或状态和广告消息。大多数广播分组被设计为在由IEEE 1609.4草案标准设置的控制信道（CCH）间隔期间在给定频率上传递。而AOS（Adaptive Offset Slot）机制首先通过广播Hello消息估计潜在的相邻车辆，然后计算期望的偏移时隙，以减少碰撞情况，从而提高传输性能。
IEEE 802.11p/WAVE (Wireless Access in Vehicular Environments) is an emerging family of standards intended to support wireless access in Vehicular Ad Hoc Networks (VANETs). Broadcasting of data and control packets is expected to be crucial in this environment. Both safety-related and non-safety applications rely on broadcasting for the exchange of data or status and advertisement messages. Most of the broadcasting packet is designed to be delivered on a given frequency during the control channel (CCH) interval set by the IEEE 1609.4 draft standard. However, the AOS (Adaptive Offset Slot) mechanism is firstly developed based on the estimation of potential neighboring vehicles through broadcasting Hello messages, and then calculating the expected offset slots for reduce the collision situations, and thus improve transmission performance.