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dc.contributor.authorWang, Dan
dc.contributor.authorSong, Yi
dc.identifier.citationD. Wang and Y. Song, "A Novel Distributed Global Time Synchronization Protocol in Cognitive Radio Ad Hoc Networks," 2015 IEEE Global Communications Conference (GLOBECOM), San Diego, CA, 2015, pp. 1-6en_US
dc.descriptionClick on the DOI link to access the article (may not be free).en_US
dc.description.abstractGlobal time synchronization is an important function that enables all devices in a network to have a unified time. In traditional wireless ad hoc networks, since the spectrum is always available, the global time synchronization process usually can be performed without any interruption. However, in cognitive radio (CR) ad hoc networks, the global time synchronization process among secondary users may fail due to the dynamic spectrum availability. Therefore, the network performance will be significantly affected if time synchronization fails. In this paper, the unique challenges in global time synchronization in CR ad hoc networks are addressed. A novel distributed global time synchronization protocol is proposed considering the unique features of CR ad hoc networks such as the traffic and the topology of primary users (PUs). An optimal root node (i.e., the node which provides the reference time) selection scheme and an optimal time synchronization period are designed. Moreover, under the proposed optimal root node and the optimal time synchronization period, the synchronization delay and the impact of PUs on the global time synchronization performance are reduced dramatically. To the best of our knowledge, this is the first paper that investigates the global time synchronization issue in CR ad hoc networks that considers the unique features of CR ad hoc networks.en_US
dc.relation.ispartofseries2015 IEEE Global Communications Conference (GLOBECOM);
dc.subjectAd hoc networksen_US
dc.subjectNetwork topologyen_US
dc.subjectWireless networksen_US
dc.subjectCognitive radioen_US
dc.titleA novel distributed global time synchronization protocol in cognitive radio ad hoc vetworksen_US
dc.typeConference paperen_US
dc.rights.holder© Copyright 2016 IEEE - All rights reserved.en_US

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