摘要： 针对车辆自组网络在车辆较密集的情况下，安全信息容易发生频繁碰撞以及时延变大等问题，提出一种基于车辆自组网络的按需功率控制算法，发送节点根据背景安全信息需求节点的位置，动态地调节背景安全信息发送功率，通过传递安全信息提高驾驶的安全性。仿真实验结果表明，该算法可以有效减小时延，提升安全信息正确接收率，从而提高车辆自组网络的安全预警功能。
关键词:
车辆自组网络,
功率控制,
车辆安全
Abstract: Aiming at the problems that the safety information is easy to collide frequently, and the time delay becomes larger when the vehicle density is high in Vehicle Ad Hoc Network(VANET), an On-Demand Power Control Algorithm(ODPCA) based on VANET is proposed. According to the node locations of background safety information demand, the nodes adjust their send power dynamically. By using the safety information transferred between the vehicles, the driving safety is promoted. Simulation experimental results show this algorithm can reduce the time delay, improve the correct reception rate of safety information, and enhance the safety prewarning function of VANET.
Key words:
Vehicle Ad Hoc Network(VANET),
power control,
vehicle safety
中图分类号:
杜 珊;刘富强;徐尚志;王新红. 基于车辆自组网络的按需功率控制算法[J]. 计算机工程, 2009, 35(16): 97-100.
DU Shan; LIU Fu-qiang; XU Shang-zhi; WANG Xin-hong. On-Demand Power Control Algorithm Based on Vehicle Ad Hoc Network[J]. Computer Engineering, 2009, 35(16): 97-100.