Analysis and verification of TCP goodput of poisson distribution station over WLANs
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摘要:
分析了Bianchi G提出的IEEE 802.11 MAC DCF的吞吐量模型,在其基础上扩展了重传限制和在其离散马尔科夫链中增加了不退避直接传输状态,修正并完善了该经典模型,同时提出了在一定时间内BSS中接入AP的无线站点数目符合泊松分布的假设,并给出了对应模型和计算吞吐量的量化表达式,最后通过仿真AP到无线站点的单向TCP流,验证了提出的模型的合理性和有效性.
Abstract:
By analyzing the throughput model of IEEE 802.11 MAC DCF put forward by Bianchi G, the retransmitting limit is extended and the state of direct transmission with no backing off is added in its discrete Markov chains to refine and perfect the classic model. The following assumption is proposed: the number of wireless stations accessing to AP in BSS met poisson distribution within a certain period of time. Under this assumption, both of the corresponding model and the quantified expression of calculating its goodput are provided. The rationality and effectiveness of the proposed model are verified with emulation of unidirectional TCP flow from AP to wireless stations.
