摘要
为了准确评估实际网络中IEEE 802.11b分布式协调功能(Distributed Coordination Function,DCF)的系统性能,提出了一种三维Markov链路模型,该模型综合考虑了DCF协议退避计数器冻结状态和有限重传次数,并结合M/M/1/K排队模型给出了在负载有限的情况下DCF系统性能的理论模型。仿真结果表明,该模型能准确地预测IEEE 802.11b DCF协议的系统性能。
A new 3.D Markov chain model is proposed for accurately assessing the actual network performance of IEEE 802.11b DCF.The model takes into account DCF protocol backoff counter frozen and limited number of retransmissions.Combined with M/M/1/K queue model,a theoretical model of DCF system performance with finite load is derived.The simulation results show that the model can accurately predict system performance of IEEE 802.11b DCF protocol.
出处
《无线电工程》
2015年第1期16-19,共4页
Radio Engineering
