The Myth of Spatial Reuse with Directional Antennas in Indoor Wireless Networks

被引：0
|
作者：
Lakshmanan, Sriram [1 ]
Sundaresan, Karthikeyan [2 ]
Rangarajan, Sampath [2 ]
Sivakumar, Raghupathy [1 ]
机构：
[1] Georgia Inst Technol, Atlanta, GA 30332 USA
[2] NEC Labs. America, Princeton, NJ USA
来源：
PASSIVE AND ACTIVE MEASUREMENT, PROCEEDINGS | 2010年 / 6032卷
关键词：
Indoor wireless networks; directional antennas; spatial reuse;
D O I：
暂无
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
Interference among co-channel users is a. fundamental problem in wireless networks, which prevents nearby links from operating concurrently. Directional antennas allow the radiation patterns of wireless transmitters to be shaped to form directed beams. Conventionally, such beams are assumed to improve the spatial reuse (i.e. concurrency) in indoor wireless networks. In this paper, we use experiments in an indoor office setting of Wifi Access points equipped with directional antennas, to study their potential for interference mitigation and spatial reuse. in contrast to conventional wisdom, we observe that the interference mitigation benefits of directional antennas are minimal. On analyzing our experimental traces we observe that directional links do not reduce interference to nearby links due to the lack of signal confinement clue to indoor multipath fading. We then use the insights derived from our study to develop an alternative approach that provides better interference reduction in indoor networks compared to directional links.
引用
收藏
页码：51 / +
页数：2
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