NDLI: Tolerable interference in multi-channel sensor networks: A measurement study

Content Provider	IEEE Xplore Digital Library
Author	Xing Xu Ji Luo Qian Zhang
Copyright Year	2010
Description	Author affiliation: Hong Kong University of Science and Technology (Xing Xu; Ji Luo; Qian Zhang)
Abstract	Interference plays an important role in the communication of wireless sensor networks. In this paper, we for the first time propose the concept of tolerable interference and investigate the tolerability of interference in multi-channel sensor networks with empirical measurements. We find that the transmission in sensor networks can tolerate certain level interference from the adjacent channels, which are not orthogonal to the current transmission channel. That is to say, the center frequency distance (CFD) for concurrent transmissions could be smaller than the default setting in sensor networks (i.e., 5MHz in ZigBee). Concretely, with comprehensive experiments, we make two interesting observations: first, the throughput could be improved by relaxing CCA-threshold with the tolerable neighboring-channel interference; second, most of the corrupted packets caused by tolerable interference only have a small portion of error bits which could be corrected by introducing packet recovery scheme. Based on the above observations, we further have some discussions for better design of WSNs protocols, e.g., the system could enable some adaptive CCA-threshold scheme and packet recovery protocol to improve the overall throughput significantly.
Starting Page	1
Ending Page	9
File Size	372893
Page Count	9
File Format	PDF
ISBN	9781424459872
ISSN	1548615X
e-ISBN	9781424459865
DOI	10.1109/IWQoS.2010.5542763
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-06-16
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Wireless sensor networks Throughput Interchannel interference ZigBee Frequency Protocols Multiaccess communication Time measurement Computational fluid dynamics Error correction multi-channel Measurement tolerable interference wireless sensor networks
Content Type	Text
Resource Type	Article

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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
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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