摘要
目前对移动自组织网络的研究很少涉及现实环境里的测量问题。该文对不同环境下无线链路丢包率、信号强度等参数进行了测量和分析。结果表明,环境对链路质量有较大影响,在郊区环境下,丢包率较低,链路质量较好,信号强度反应链路质量的能力有限,连续丢包概率的变化与丢包率平均值的变化基本一致。分析结果对预测无线链路质量和设计VANET网络协议具有重要意义。
Rare researches about the Vehicular Ad-hoc Network（VANET） measurement are demonstrated in real environment. In this paper, average Packet Loss Rate（PLR） and signal strength of the wireless link are measured. The results indicate that environment affects the quality of the wireless link in VANET greatly, the average PLR of wireless link in open environment is lower than that in close environment, the signal strength is not closely relevant to the quality of wireless link and the variance tend of error length probability is the same as that of the average PLR. The results are important for the quality prediction of wireless link and the protocol design of VANET.
出处
《计算机工程》
CAS
CSCD
北大核心
2008年第11期131-133,共3页
Computer Engineering
基金
国家大学生创新实验计划基金资助项目(2006044)
关键词
无线链路
移动自组织网络
信道质量
丢包率
信号强度
wireless link
Vehicular Ad-hoc Network（VANET）
channel quality
Packet Loss Rate（PLR）
signal strength
