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	Connectivity of large-scale cognitive radio ad hoc networks
	Lu, Dianjie; Huang, Xiaoxia; Li, Pan; Fan, Jianping
	2012
会议名称	IEEE Conference on Computer Communications, INFOCOM 2012
会议地点	Orlando,Florida USA
英文摘要	Connectivity of large-scale wireless networks has received considerable attention in the past several years. Different from traditional wireless networks, inCognitive Radio Ad-hoc Networks (CRAHNs), primary users have spectrum access priority of the licensed bands over secondary users. Therefore, the connectivityof the secondary network is affected by not only the density and transmission power of secondary users, but also the activities of primary users. In addition, the number of licensed bands also has impact on the connectivity of CRAHNs. To capture the dynamic characteristics of opportunistic spectrum access, we introduce the Cognitive Radio Graph Model (CRGM) which takes into account the impact of the number of channels and the activities of primary users. Furthermore, we combine the CRGM with continuum percolation model to study the connectivity in the secondary network. We prove that secondary users can form the percolatednetwork when the density of primary users is below the critical density. Then, the upper bound of the critical density of the primary users in the percolated CRAHNs is derived. Simulation results show that both the number of channels and the activities of primary users greatly impact the connectivity of CRAHNs. © 2012 IEEE.(30 refs)
收录类别	EI
语种	英语
内容类型	会议论文
源URL	[http://ir.siat.ac.cn:8080/handle/172644/4240]
专题	深圳先进技术研究院_数字所
作者单位	2012
推荐引用方式 GB/T 7714	Lu, Dianjie,Huang, Xiaoxia,Li, Pan,et al. Connectivity of large-scale cognitive radio ad hoc networks[C]. 见:IEEE Conference on Computer Communications, INFOCOM 2012. Orlando,Florida USA.

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