NDLI: A QoS-Based Broadcast Protocol for Multi-Hop Cognitive Radio Ad Hoc Networks under Blind Information

Content Provider	IEEE Xplore Digital Library
Author	Yi Song Jiang Xie
Copyright Year	2011
Abstract	Broadcast is an important operation in wireless networks where control information is usually propagated as broadcasts for the realization of most networking protocols. In traditional ad hoc networks, broadcasts are conducted on a common channel which is shared by all nodes in the network. However, in cognitive radio (CR) networks, unlicensed users may observe heterogeneous spectrum availability which is unknown to other users before broadcasts are executed. Thus, it is extremely challenging that broadcasts can be successfully conducted without the spectrum availability information. In addition, since broadcast collisions (i.e., simultaneous receipt of broadcast messages at the same node) often lead to the waste of network resources, they should be efficiently mitigated in multi-hop scenarios. In this paper, a Quality-of-Service (QoS)-based broadcast protocol for multi-hop CR ad hoc networks under blind information is proposed with the aim of high success rate and short broadcast delay. In our design, we do not assume that unlicensed users are aware of the network topology, the spectrum availability information, and time synchronization information. To the best of our knowledge, this is the first paper that investigates the broadcast issue in multi-hop CR ad hoc networks under realistic scenarios. Simulation results show that our proposed broadcast protocol outperforms the random broadcast scheme in terms of higher success rate and shorter average broadcast delay.
Starting Page	1
Ending Page	5
File Size	178467
Page Count	5
File Format	PDF
ISBN	9781424492664
ISSN	1930529X
e-ISBN	9781424492688
e-ISBN	9781424492671
DOI	10.1109/GLOCOM.2011.6134457
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-12-05
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Delay Protocols Ad hoc networks Spread spectrum communication Sensors Peer to peer computing Receivers
Content Type	Text
Resource Type	Article

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