WAVE网络中基于DCF的信道预约方案的时延分析  

Delay analysis of channel reservation scheme based on DCF for WAVE network

作　　者：刘娇[1] 朱东弼[1] 

机构地区：[1]延边大学工学院计算机科学与技术学科,吉林延吉133002

出　　处：《延边大学学报（自然科学版）》2015年第1期37-41,共5页Journal of Yanbian University（Natural Science Edition）

摘　　要：以车载环境下的无线接入(wireless access in vehicular environments,WAVE)网络中基于DCF的信道预约方案为基础,通过排队论的分析方法得出了采用该方案时系统中用户预约服务信道所需的平均时延,并研究了系统的主要参数对该平均时延的影响.研究结果表明,预约数据包生成的速率和最小竞争窗口对平均时延影响较大,最大退避阶数对平均时延影响较小.We obtain the delay by queue analysis method based on the channel reservation scheme with DCF in WAVE （wireless access in vehicular environments）,the delay is the duration from the arrival epoch at the head of the queue to transmission completion point.We research the influence of the main performance param-eters on the average delay.The result shows that the generation rate of reservation packet and the minimum contention window have a great influence on the delay,and the maximum backoff stage almost have no effect on the delay.

关 键 词：WAVE DCF机制 信道预约 时延 

分 类 号：TN915[电子电信—通信与信息系统]