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Throughput Analysis of IEEE 802.11 WLANs with Inter-Network Interference

机译：IEEE 802.11 WLAN与网络间干扰的吞吐量分析

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摘要

Recently, we often see the environment where many one-to-one Wireless Local Area Networks (WLANs) exist in a small area. In this environment, the network throughput of certain WLAN reduces significantly because of the interference from other networks (i.e., inter-network interference). The inter-network interference is the effect of carrier-sensing activities when there are ongoing transmissions in neighbor networks. This paper presents analytical expressions using airtime concept, which newly take into account the inter-network interference, for network throughputs of WLANs. There are existing works that similarly address the WLAN’s carrier-sensing duration. However, they either consider a simple interference model or assume the simultaneous transmission time is negligible. Different from them, we consider the significant impact of simultaneous transmission. As a result, our analytical model can precisely express each network carrier-sensing duration by subtracting the simultaneous transmission time. More specifically, we have successfully obtained each network throughput by expressing frame-existence probabilities concerning each network’s End Device (ED). We also confirm the validity of the analysis by comparison with simulation. The analytical results and the simulation results agree well.
机译：最近，我们经常看到一个环境中存在许多一对一无线局域网（WLAN）的环境。在这种环境中，某些WLAN的网络吞吐量由于其他网络的干扰（即网络间干扰）而显着减少。网络间干扰是当邻居网络中正在进行的传输时载波传感活动的效果。本文介绍了使用通话时间概念的分析表达式，该概念新考虑到WLAN的网络吞吐量的网络间干扰。存在存在类似地解决WLAN的载波传感持续时间的作品。然而，他们要么考虑一个简单的干扰模型，要么假设同时传输时间可以忽略不计。与他们不同，我们考虑同时传输的重大影响。结果，通过减去同时传输时间，我们的分析模型可以精确地表达每个网络载波感测持续时间。更具体地，我们通过表达关于每个网络的终端设备（ED）的帧生存概率成功获得了每个网络吞吐量。我们还通过与仿真进行比较确认分析的有效性。分析结果和模拟结果吻合良好。

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