Multichannel Broadcast Via Channel Hopping in Cognitive Radio Networks

doi:10.1109/TVT.2014.2349996

CORC > 北京大学 > 信息科学技术学院

	Multichannel Broadcast Via Channel Hopping in Cognitive Radio Networks
	Chen, Lin ; Bian, Kaigui ; Du, Xiaojiang ; Li, Xiaoming
刊名	IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
	2015
关键词	Broadcast channel hopping cognitive radio network Langford pairing MULTICAST CHALLENGES SERVICES ACCESS
DOI	10.1109/TVT.2014.2349996
英文摘要	Broadcast is a mandatory service for wireless communications, through which the signals or contents are usually propagated as broadcasts to groups of users that subscribe to the service. However, in cognitive radio networks where secondary users (SUs) opportunistically access the licensed spectrum bands, the broadcast delivery via a single broadcast channel cannot be reliably guaranteed when the broadcast channel is reclaimed by a primary user (PU, or licensed user) that has a higher priority of accessing the spectrum or when an SU moves into a region where PU transmissions are active. As a result, broadcast failures occur between the base station (BS) and the SU. To address this problem, the BS has to broadcast on more than one channel to avoid colliding with PUs and ensure that all users can correctly receive the broadcasted content. In this paper, we propose a multichannel broadcast protocol, i.e., Mc-Broadcast, that enables a network BS to broadcast over multiple channels via a channel hopping (CH) process such that the broadcasts can be successfully delivered to SUs. The CH sequence for Mc-Broadcast is generated using a mathematical construct called Langford pairing, which allows the BS to significantly reduce the broadcast latency and given a customized number of broadcast channels. Our analytical and simulation results show that the proposed method reduces the broadcast latency, and it is robust to the broadcast failure caused by PU transmissions under various network conditions.; National Natural Science Foundation of China [61201245]; Specialized Research Fund for the Doctoral Program of Higher Education (SRFDP) [20120001120128]; Beijing Natural Science Foundation [4143062]; State Key Laboratory of Software Development Environment [SKLSDE-2014KF]; SCI(E); EI; ARTICLE; lin.chen@yale.edu; bkg@pku.edu.cn; dux@temple.edu; lxm@pku.edu.cn; 7; 3004-3017; 64
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/418798]
专题	信息科学技术学院
推荐引用方式 GB/T 7714	Chen, Lin,Bian, Kaigui,Du, Xiaojiang,et al. Multichannel Broadcast Via Channel Hopping in Cognitive Radio Networks[J]. IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY,2015.
APA	Chen, Lin,Bian, Kaigui,Du, Xiaojiang,&Li, Xiaoming.(2015).Multichannel Broadcast Via Channel Hopping in Cognitive Radio Networks.IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY.
MLA	Chen, Lin,et al."Multichannel Broadcast Via Channel Hopping in Cognitive Radio Networks".IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY (2015).