标题：A New Method for Analyzing Nonsaturated IEEE 802.11 DCF Networks
作者机构：[Zhang, Xiaomin] Shandong Univ, Sch Informat Sci & Engn, Jinan 250100, Peoples R China.
通讯作者地址：[Zhang, XM]Shandong Univ, Sch Informat Sci & Engn, Jinan 250100, Peoples R China.
来源：IEEE WIRELESS COMMUNICATIONS LETTERS
关键词：IEEE 802.11 DCF; renewal theory; Markov renewal process; performance; analysis
摘要：This letter presents a new method for analyzing nonsaturated IEEE 802.11 DCF networks: the behavior of each station in a WLAN is modeled as a Markov renewal process, and the throughput expression is derived from the traffic conservation principle for queueing systems in equilibrium. The Markov renewal process model simplifies the derivation of the closed form solution for the probability that each station attempts to transmit in a slot. The throughput expression shows a relatively explicit relation between the throughput and the offered load. The accuracy of the method is verified by ns-2 simulation.