摘要
为确定专用短程通信协议的重要参数,把通信过程分为预约阶段和数据传送阶段,运用排队论理论分阶段建立了协议的数学模型,分析并论述了预约阶段的延时和吞吐能力,给出了数据传送阶段中数据传送时间服从定长分布和负指数分布情况下的主要参数和性能指标的计算方法,并给出了相应的计算结果,最后讨论了实际应用中不满足假设条件情况下的解决办法.
In order to determine the important parameters of DSRC (Dedicated Short-Range Communication) protocol, the communication process is divided into two phases, namely, the reservation phase and the data transmission phase. The mathematical model of the protocol is then established stage by stage based on the queuing theory. The time delay and the throughput in the reservation phase are then analyzed and discussed. Moreover, the calculation method and corresponding results of the main parameters and the performance targets in the data transmission phase are presented. This calculation is carried out on condition that the data transmission time follows fixed-length distribution and negative index distribution. Solutions are also given to those cases where the application condition does not meet the assumptions.
出处
《华南理工大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2005年第6期18-22,共5页
Journal of South China University of Technology(Natural Science Edition)
基金
国家'十五'科技攻关项目(2002BA404A23A)
华南理工大学自然科学基金资助项目(E5320271)
关键词
专用短程通信
协议模型
智能交通系统
排队论
dedicated short-range communication
protocol model
intelligent transportation system
queuing theory
