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Wireless Communications and Mobile Computing
Volume 2018 (2018), Article ID 6848641, 7 pages
Research Article

A Joint Channel Selection and Routing Protocol for Cognitive Radio Network

1School of Information Engineering, Henan University of Science and Technology, Luoyang 471023, China
2Henan Key Laboratory for Machinery Design and Transmission System, Luoyang 471023, China

Correspondence should be addressed to Yuting Wang; moc.361@27610883281

Received 10 August 2017; Revised 11 December 2017; Accepted 26 December 2017; Published 13 March 2018

Academic Editor: Bernard Cousin

Copyright © 2018 Yuting Wang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


In cognitive radio network, the activities of primary users will cause great influence on the stability of multiple hops routes between cognitive users. In this regard, a joint channel selection and routing protocol, termed as CSRP, is proposed to ensure route stability and reduce route latency between cognitive users. The channel availability based on historical information and the channel switching delay are used as the channel selection criteria to choose the end-to-end shortest route which possesses high data delivery probabilities and low delays. Besides, simulation results show that the proposed protocol has a better performance in terms of packet transmission delay and data delivery rate compared with the routing protocols based on delay (TDRP) and based on joint routing and channel allocation (PUB-JRCA).