Paper Info
Title
Cognitive Radio-based Wireless Sensor Networks: Conceptual design and open issues
Abstract
Traditional static spectrum allocation policies have been to grant each wireless service exclusive usage of certain frequency bands, leaving several spectrum bands unlicensed for industrial, scientific and medical purposes. The rapid proliferation of low-cost wireless applications in unlicensed spectrum bands has resulted in spectrum scarcity among those bands. Since most applications in Wireless Sensor Networks (WSNs) utilize the unlicensed spectrum, network-wide performance of WSNs will inevitably degrade as their popularity increases. Sharing of under-utilized licensed spectrum among unlicensed devices is a promising solution to the spectrum scarcity issue. Cognitive Radio (CR) is a new paradigm in wireless communication that allows sensor nodes as the unlicensed users or Secondary Users (SUs) to detect and use the under-utilized licensed spectrum temporarily. Given that the licensed or Primary Users (PUs) are oblivious to the presence of SUs, the SUs access the licensed spectrum opportunistically without interfering the PUs, while improving their own performance. In this paper, we propose an approach to build Cognitive Radio-based Wireless Sensor Networks (CR-WSNs). We believe that CR-WSN is the next-generation WSN. Realizing that both WSNs and CR present unique challenges to the design of CR-WSNs, we provide an overview and conceptual design of WSNs from the perspective of CR. The open issues are discussed to motivate new research interests in this field. We also present our method to achieving context-awareness and intelligence, which are the key components in CR networks, to address an open issue in CR-WSN.
Year
DOI
Venue
2009
10.1109/LCN.2009.5355016
Zurich
Keywords
Field
DocType
cognitive radio,radio spectrum management,wireless sensor networks,cognitive radio-based wireless sensor networks,conceptual design,context-awareness,licensed users,primary users,secondary users,spectrum scarcity,static spectrum allocation policies,under-utilized licensed spectrum,unlicensed spectrum bands,unlicensed users,Wireless sensor networks,cognitive radio
Key distribution in wireless sensor networks,White spaces,Wireless,Telecommunications,Spectrum management,Computer science,Computer network,Frequency allocation,Wireless sensor network,Radio spectrum,Cognitive radio
Conference
ISSN
ISBN
Citations 
0742-1303
978-1-4244-4487-8
21
PageRank 
References 
Authors
1.05
11
3
Name
Order
Citations
PageRank
Kok-Lim Alvin Yau1523.88
Peter Komisarczuk214517.62
Paul D. Teal310413.58