摘要
本文对DCF的退避过程建立马尔可夫链模型,通过理论分析,估计出了在各个站点运行不同业务、有着不同的包长分布的情况下,系统吞吐量及各个站点占有的网络带宽。在通过仿真工具NS-2进行验证后,取得了较为准确的结果。系统吞吐量及各个站点占用带宽情况的估计,在网络规划、接纳控制、切换等过程中都有非常重要的意义。
A Markov chain model is developed to describe the backoff procedure ot Distributed Coordination Function （DCF）. Through analysis, the throughput of the Wireless Local Area Network （WLAN） system and individual nodes can be estimated in the case that different nodes have different services and different services have different packet length distribution. With network simulator NS -2, the estimated result is validated and it is found that the estimated result is quite accurate. The throughput estimation of the WLAN system and individual nodes is very useful in the areas of network planning, access controlling, handoff,and so on.
出处
《电讯技术》
2005年第4期75-78,共4页
Telecommunication Engineering
基金
三星SAIT和清华大学合作项目
电子技术标准化研究所资助项目
