Pushing the envelope of indoor wireless spatial reuse using directional access points and clients
Pushing the envelope of indoor wireless spatial reuse using directional access points and clients
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DOI：
10.1145/1859995.1860020
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发表时间：
2010-09
期刊：
影响因子：
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通讯作者：
Xi Liu;Anmol Sheth;M. Kaminsky;K. Papagiannaki;S. Seshan;P. Steenkiste
中科院分区：
文献类型：
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作者：
Xi Liu;Anmol Sheth;M. Kaminsky;K. Papagiannaki;S. Seshan;P. Steenkiste
最近的工作表明，定向天线在提高室内环境中的无线网络容量方面具有巨大潜力。本文沿着两个主要维度对室内定向天线系统的设计空间进行了更广泛的探索：天线配置和天线控制。研究了许多替代配置，我们发现接入点和客户端的方向性可以显着提高性能，甚至比其他具有更强方向性的配置也是如此。而且，只需少量的窄波束天线就足以实现这样的增益，从而使得这种方案对于实际部署来说是实用的。然而，设计具有定向 AP 和客户端的系统以提高空间复用率时，会面临定向天线控制方式方面的许多挑战。天线控制需要包含天线定向算法、适当的 MAC 层协议和新颖的客户端-AP 关联解决方案。为了克服这些挑战，我们提出了 Speed，这是一种分布式定向天线控制系统，它易于部署，并且比现有解决方案显着提高了网络容量。
Recent work demonstrates that directional antennas have significant potential to improve wireless network capacity in indoor environments. This paper provides a broader exploration of the design space of indoor directional antenna systems along two main dimensions: antenna configuration and antenna control. Studying a number of alternative configurations, we find that directionality on APs and clients can significantly improve performance, even over other configurations with stronger directionality. Moreover, it is sufficient to have a small number of narrow beam antennas to achieve such gains, thus making such a solution practical for actual deployment. Designing systems with directional APs and clients for increased spatial reuse comes, however, with a number of challenges in the way the directional antennas are controlled. Antenna control needs to encompass antenna orientation algorithms, an appropriate MAC layer protocol, and novel client-AP association solutions. To overcome these challenges, we propose Speed, a distributed directional antenna control system that is easy to deploy and significantly improves network capacity over existing solutions.