Context-Aware Rate-Adaptive Beaconing for Efficient and Scalable Vehicular Safety Communication

• 作者: Alvin Sebastian Maolin Tang Mark Looi Yanming Feng
• 来源期刊: 通讯、网络与系统学国际期刊(英文)
• 学科: 工学
• 关键词: VANET DSRC Vehicular SAFETY COMMUNICATION SAFETY Applications Adaptive Beaconing CONTEXT-AWARE
• 年，卷（期）: 2012,（9）
• 页码范围: 534-547
• 页数: 14页
• 分类号: TN92

摘要

Vehicular safety applications, such as cooperative collision warning systems, rely on beaconing to provide situational awareness that is needed to predict and therefore to avoid possible collisions. Beaconing is the continual exchange of vehicle motion-state information, such as position, speed, and heading, which enables each vehicle to track its neighboring vehicles in real time. This work presents a context-aware adaptive beaconing scheme that dynamically adapts the beaconing repetition rate based on an estimated channel load and the danger severity of the interactions among vehicles. The safety, efficiency, and scalability of the new scheme is evaluated by simulating vehicle collisions caused by inattentive drivers under various road traffic densities. Simulation results show that the new scheme is more efficient and scalable, and is able to improve safety better than the existing non-adaptive and adaptive rate schemes.