车联网中基于路边设施的广播协议研究

摘要

Aimed at the network disconnecting issue in VANET,on the basis of existing carry-forward mechanism,a new broadcasting protocol based on the use of fixed facility RSU was proposed to shorten the re-healing time between nodes. A detailed analysis was made about the delivery process of messages and the calculation method of re-healing time in two kinds of cases,and a comparison with SCB and SCF mechanisms through simulation experiments was conducted. The results showed that the new broadcasting protocol based on RSU can greatly reduce the re-healing time in the case of network dis-connection.%针对车联网中的网络断开问题，在已有的携带转发机制的基础上，提出利用固定设施 RSU 旨在缩短节点间的重新愈合时间的广播协议。分2种情况详细分析了消息的传递过程和重新愈合时间的计算方法，并通过仿真实验与SCB、SCF机制进行对比。结果表明：基于路边设施的广播协议能够明显减少网络断开情形中的重新愈合时间。