NDLI: Database-assisted multi-AP network on TV white spaces: Architecture, spectrum allocation and AP discovery

Content Provider	IEEE Xplore Digital Library
Author	Xiaojun Feng Jin Zhang Qian Zhang
Copyright Year	2011
Description	Author affiliation: Department of Computer Science and Engineering, Hong Kong University of Science and Technology, Hong Kong (Xiaojun Feng; Jin Zhang; Qian Zhang)
Abstract	According to the FCC's final rule for the unlicensed use of TV white spaces, secondary users are required to query a geo-location database to determine whether a spectrum band is occupied or not. However, how to design a multi-cell infrastructure-based secondary network to dynamically access TV white spaces with the help of database is still an open issue. In this paper, we present the design and implementation of WhiteNet, a multi-cell infrastructure-based dynamic spectrum access system on TV white spaces. WhiteNet is compatible with the FCC's database architecture. In WhiteNet, the geo-location database is exploited to assist multi-AP coordination. A low-overhead distributed spectrum allocation algorithm is proposed to allocate spectrum among multiple APs in WhiteNet, considering the heterogeneous propagation property among various spectrum bands throughout TV white spaces. A novel AP discovery scheme is designed to enable users to discover and select the best access point to connect. We implement WhiteNet in a 7-node GNU Radio testbed, which demonstrates the feasibility of our system. Evaluation results show that our spectrum allocation algorithm can significantly increase total network throughput, besides, the AP discovery scheme is reliable and efficient.
Starting Page	265
Ending Page	276
File Size	749573
Page Count	12
File Format	PDF
ISBN	9781457701771
e-ISBN	9781457701788
e-ISBN	9781457701764
DOI	10.1109/DYSPAN.2011.5936215
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-05-03
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Algorithm design and analysis TV Databases Interference Bandwidth White spaces Resource management
Content Type	Text
Resource Type	Article

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