2BSS场景下WLAN网络信道接入机制建模
Modeling of WLAN Network Channel Access Mechanism in 2BSS Scenarios
摘要: 无线局域网是一种新兴的无线自组织网络，具有低成本、高吞吐的特点。对于单个AP，数据在传输时可能会发生碰撞而传输失败，对于两个或多个同频AP，它们之间又可能会存在相互干扰问题，从而影响系统的性能。于是本文在分布式协调功能和二进制指数退避的基础上，通过对不同条件环境下的2BSS系统进行模型建立，并对系统的吞吐量进行评估。本文主要基于负顾客的双端队列机制的Bianchi改进模型，并结合排队论中的平衡方程对模型进行求解，最后得出系统吞吐量的显示解。通过数值实验结果表明：在参数条件下，数值实验得到的吞吐量与仿真得到的结果相似，分别为30.5 Mbps和31.03 Mbps。另外，当信干比SIR较高时，AP间同频干扰不影响数据传输，会对系统的吞吐量产生积极的影响。
Abstract: WLAN is an emerging wireless self-organizing network with the characteristics of low cost and high throughput. For a single AP, data may collide and fail during transmission, and for two or more same frequency APs, there may be mutual interference issues between them, which can affect the performance of the system. Therefore, based on the distributed coordination function and binary exponential backoff, this article establishes a model for 2BSS systems under different conditions and evaluates the throughput of the system. This article mainly focuses on the Bianchi improved model based on the negative customer double-ended queue mechanism, and combines the equilib-rium equation in queueing theory to solve the model. Finally, the explicit solution of the system throughput is obtained. The numerical experimental results indicate that under parameter condi-tions, the throughput obtained from the numerical experiment is similar to the simulation results, with values of 30.5 Mbps and 31.03 Mbps, respectively. In addition, when the signal to interference ratio (SIR) is high, the same frequency interference between APs does not affect data transmission and will have a positive impact on the system throughput.
文章引用：颜龙, 叶晴晴. 2BSS场景下WLAN网络信道接入机制建模[J]. 建模与仿真, 2023, 12(6): 5959-5972. https://doi.org/10.12677/MOS.2023.126540

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