Performance evaluation of mobile hotspots in densely deployed WLAN environments

2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC) Pub Date : 2013-12-11 DOI:10.1109/PIMRC.2013.6666649

S. Sagari, A. Baid, I. Seskar, T. Murase, M. Oguchi, D. Raychaudhuri

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引用次数: 17

Abstract

This paper presents a study of mobile wireless LAN (WLAN) hotspots which are used to provide cellular-WiFi tethering service to personal devices. A dense deployment scenario for fixed and mobile WLAN is described and potential performance problems due to interference are identified. An analytical model for coexisting fixed and mobile WLAN hotspots with heterogeneous traffic is presented. The model is used to evaluate the performance of a mobile WLAN as it transits through a set of densely deployed fixed access points (APs), and performance problems due to lack of frequency coordination are identified. An adaptive channel assignment (ACA) scheme for improving mobile AP performance is proposed and evaluated. It is shown that significant performance gains can be achieved with ACA with maximum absolute and percentage throughput gains up to 1.24 Mbps and 42.8% respectively. We also show that setting the scanning interval in ACA requires consideration of the speed at which the mobile WLAN is moving in order to compensate for the throughput losses during channel scanning.

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密集部署的WLAN环境中移动热点的性能评估

本文对移动无线局域网(WLAN)热点进行了研究，该热点用于为个人设备提供蜂窝wifi捆绑服务。描述了固定和移动WLAN的密集部署场景，并确定了由于干扰引起的潜在性能问题。提出了一种固定热点和移动热点共存且流量异构的分析模型。该模型用于评估移动WLAN通过一组密集部署的固定接入点(ap)传输时的性能，并确定了由于缺乏频率协调而导致的性能问题。提出并评估了一种提高移动AP性能的自适应信道分配方案。结果表明，使用ACA可以实现显著的性能提升，最大绝对吞吐量提升和百分比吞吐量提升分别高达1.24 Mbps和42.8%。我们还表明，在ACA中设置扫描间隔需要考虑移动WLAN的移动速度，以补偿通道扫描期间的吞吐量损失。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)

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