Channel access protocols for multihop opportunistic networks: challenges and recent developments

Heavy traffic over the unlicensed portion of the spectrum along with inefficient usage of the licensed spectrum gave impetus for a new spectrum allocation policy, the main purpose of which is to improve spectrum efficiency through opportunistic spectrum access. Cognitive radios have been proposed as...

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Bibliographic Details
Published inIEEE network Vol. 23; no. 4; pp. 14 - 19
Main Authors Bany Salameh, H., Krunz, M.
Format Journal Article
LanguageEnglish
Published IEEE 2009
Subjects
Access control
Access protocols
Algorithm design and analysis
Allocations
Channels
Chromium
Chromium nitride
Cognitive radio
Constraining
Interference
Media Access Protocol
Networks
Policies
Radio
Security
Spread spectrum communication
Telecommunication traffic
Ultra wideband technology
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Summary:Heavy traffic over the unlicensed portion of the spectrum along with inefficient usage of the licensed spectrum gave impetus for a new spectrum allocation policy, the main purpose of which is to improve spectrum efficiency through opportunistic spectrum access. Cognitive radios have been proposed as a key enabling technology for such an opportunistic policy. One of the key challenges to enabling multihop CR communications is how to perform opportunistic medium access control while limiting the interference imposed on licensed users. In this article we highlight the unique characteristics of multihop cognitive radio networks, discuss key MAC design challenges specific to such networks, and present some of the work that has been done on MAC design for CRNs.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0890-8044
1558-156X
DOI:10.1109/MNET.2009.5191141