Cognitive radio network in vehicular ad hoc network (VANET): a survey

Lim, Joanne Mun-Yee, Chang, Yoong Choon, Alias, Mohamad Yusoff and Loo, Jonathan (2016) Cognitive radio network in vehicular ad hoc network (VANET): a survey. Cogent Engineering, 3 (1) . ISSN 2331-1916 [Article] (doi:10.1080/23311916.2016.1191114)

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Abstract

Cognitive radio network and vehicular ad hoc network (VANET) are recent emerging concepts in wireless networking. Cognitive radio network obtains knowledge of its operational geographical environment to manage sharing of spectrum between primary and secondary users, while VANET shares emergency safety messages among vehicles to ensure safety of users on the road. Cognitive radio network is employed in VANET to ensure the efficient use of spectrum, as well as to support VANET’s deployment. Random increase and decrease of spectrum users, unpredictable nature of VANET, high mobility, varying interference, security, packet scheduling, and priority assignment are the challenges encountered in a typical cognitive VANET environment. This paper provides survey and critical analysis on different challenges of cognitive radio VANET, with discussion on the open issues, challenges, and performance metrics for different cognitive radio VANET applications.

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