摘要
由于车辆移动性和道路环境多样性,车用自组织网络(vehicular ad-hoc network,VANET)信道质量影响了数据传输的稳定性.通过探索分析VANET信道规律,发现VANET信道随距离变化存在3种不同丢包率分布状态.根据其不同特点,建立了信道丢包率经验模型.检验结果表明,该模型具有较高的准确度,能够用于VANET信道仿真和信道质量预测.
Due to vehicle mobility and the diversity of road conditions, the wireless channel of VANET （vehicular ad-hoc network） has a great impact on data transmission. This paper analyzes and summarizes VANET channel laws, and indicates that there are three distributions of packet loss rate with distance on VANET channel. Base on the characteristics of the three distributions, an experiential model of packet loss rate is built. The experiment results show the model fits channel laws with high accuracy and can be used to simulate the VANET channel and predict the channel quality.
出处
《武汉大学学报（理学版）》
CAS
CSCD
北大核心
2008年第1期114-118,共5页
Journal of Wuhan University:Natural Science Edition
基金
国家自然科学基金(60502028)
湖北省自然科学基金(2007ABA324)
武汉市青年科技晨光计划(200750731252)资助项目
关键词
车用自组织网络
信道规律
丢包率
统计模型
vehicular ad-hoc network（VANET）
channel rules
packet loss rate
statistical model
