NDLI: Beyond co-existence: Exploiting WiFi white space for Zigbee performance assurance

Content Provider	IEEE Xplore Digital Library
Author	Jun Huang Guoliang Xing Gang Zhou Ruogu Zhou
Copyright Year	2010
Description	Author affiliation: Michigan State University, USA (Jun Huang; Guoliang Xing; Ruogu Zhou) \|\| College of William and Mary, USA (Gang Zhou)
Abstract	Recent years have witnessed the increasing adoption of ZigBee technology for performance-sensitive applications such as wireless patient monitoring in hospitals. However, operating in unlicensed ISM bands, ZigBee devices often yield unpredictable throughput and packet delivery ratio due to the interference from ever increasing WiFi hotspots in 2.4 GHz band. Our empirical results show that, although WiFi traffic contains abundant white space, the existing coexistence mechanisms such as CSMA are surprisingly inadequate for exploiting it. In this paper, we propose a novel approach that enables ZigBee links to achieve assured performance in the presence of heavy WiFi interference. First, based on statistical analysis of real-life network traces, we present a Pareto model to accurately characterize the white space in WiFi traffic. Second, we analytically model the performance of a ZigBee link in the presence of WiFi interference. Third, based on the white space model and our analysis, we develop a new ZigBee frame control protocol called WISE, which can achieve desired trade-offs between link throughput and delivery ratio. Our extensive experiments on a testbed of 802.11 netbooks and 802.15.4 TelosB motes show that, in the presence of heavy WiFi interference, WISE achieves 4× and 2× performance gains over B-MAC and a recent reliable transmission protocol, respectively, while only incurring 10.9% and 39.5% of their overhead.
Starting Page	305
Ending Page	314
File Size	1172553
Page Count	10
File Format	PDF
ISBN	9781424486441
ISSN	10921648
e-ISBN	9781424486458
DOI	10.1109/ICNP.2010.5762779
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-10-05
Publisher Place	Japan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	IEEE 802.11 Standards Zigbee White spaces Interference Protocols Throughput Receivers
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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Beyond co-existence: exploiting wifi white space for zigbee performance assurance.

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Beyond co-existence: Exploiting WiFi white space for Zigbee performance assurance

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