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dc.contributor.authorSong, Yi
dc.contributor.authorXie, Jiang
dc.identifier.citationYi Song; Jiang Xie, "BRACER: A Distributed Broadcast Protocol in Multi-Hop Cognitive Radio Ad Hoc Networks with Collision Avoidance," Mobile Computing, IEEE Transactions on , vol.14, no.3, pp.509,524, March 1 2015en_US
dc.descriptionClick on the DOI link to access the article (may not be free).en_US
dc.description.abstractBroadcast is an important operation in wireless ad hoc networks where control information is usually propagated as broadcasts for the realization of most networking protocols. In traditional ad hoc networks, since the spectrum availability is uniform, broadcasts are delivered via a common channel which can be heard by all users in a network. However, in cognitive radio (CR) ad hoc networks, different unlicensed users may acquire different available channel sets. This non-uniform spectrum availability imposes special design challenges for broadcasting in CR ad hoc networks. In this paper, a fully-distributed Broadcast protocol in multi-hop Cognitive Radio ad hoc networks with collision avoidance, BRACER, is proposed. In our design, we consider practical scenarios that each unlicensed user is not assumed to be aware of the global network topology, the spectrum availability information of other users, and time synchronization information. By intelligently downsizing the original available channel set and designing the broadcasting sequences and scheduling schemes, our proposed broadcast protocol can provide very high successful broadcast ratio while achieving very short average broadcast delay. It can also avoid broadcast collisions. To the best of our knowledge, this is the first work that addresses the unique broadcasting challenges in multi-hop CR ad hoc networks with collision avoidance.en_US
dc.description.sponsorshipThis work was supported in part by the US National Science Foundation (NSF) under Grant No. CNS0953644, CNS-1218751, and CNS-1343355.en_US
dc.relation.ispartofseriesIEEE Transactions on Mobile Computing;v.14:no.3
dc.subjectCognitive radio ad hoc networksen_US
dc.subjectDistributed broadcasten_US
dc.subjectChannel hoppingen_US
dc.subjectBroadcast collision avoidanceen_US
dc.titleBRACER: a distributed broadcast protocol in multi-hop cognitive radio ad hoc networks with collision avoidanceen_US
dc.rights.holderCopyright © 2015, IEEE

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