摘要： 为满足车辆自组织网络(VANET)中预警信息广播快速、可靠的要求，结合多接口多信道技术，提出一种基于速率自适应的VANET预警信息广播机制BRAVE。仿真实验结果表明，该机制能够缩短预警信息传播时间，减少重播冗余，确保信息传播的可靠性。与单用传输速率和传播范围为依据选择转播节点进行传播的机制相比，其传输延迟分别降低了3.9%和66.0%。
关键词:
车辆自组织网络,
速率自适应,
预警信息,
广播机制
Abstract: In order to broadcast Emergency Warning Messages(EWM) in Vehicle Ad hoc Network(VANET) fast and reliably, this paper proposes a broadcast mechanism based on rate adaptation for VANET named BRAVE combing the technology of multiple interfaces with multiple channels. Simulation results reveal that BRAVE can reduce the transmission latency and rebroadcast redundancy of EWM, and increase the transmission reliability to guarantee the message delivery. Compared with the mechanisms that select the broadcast nodes in terms of bit-rate and transmission range, its transmission latency is reduced by 3.9% and 66.0% respectively.
Key words:
Vehicle Ad hoc Network(VANET),
rate adaptation,
Emergency Warning Message(EWM),
broadcast mechanism
中图分类号:
刘彦龙, 吕品, 陈颖文, 匡罗贝, 徐明. 基于速率自适应的VANET预警信息广播[J]. 计算机工程, 2010, 36(21): 100-102.
LIU Pan-Long, LV Pin, CHEN Ying-Wen, KUANG Luo-Bei, XU Meng. Emergency Warning Message Broadcast Based on Rate Adaptation for Vehicle Ad hoc Network[J]. Computer Engineering, 2010, 36(21): 100-102.