Paper Info
Title
Cognitive Radio-Based Vehicular Ad Hoc And Sensor Networks
Abstract
Current advancements in vehicular networking lead to amplifying the issue of spectrum scarcity. Cognitive radio (CR) has emerged as the key technology that enables flexible, efficient, and reliable spectrum exploiting by unlicensed networks to use licensed spectrum bands in an opportunistic manner to alleviate the spectrum scarcity issue. We have already proposed vehicular ad hoc and sensor networks (VASNET) as a new networking paradigm for vehicular communication by utilizing wireless sensor nodes in two mobile and stationary modes. The nodes are employed to sense vehicles' activity, for example, car crashes. Like other unlicensed networks, VASNET is supposed to operate over unlicensed spectrum bands. However, due to emergency nature of accident alarms in VASNET that must be received in minimum period of time and avoiding packet loss, in this paper we investigate CR-based VASNET, named as CR-VASNET. Various challenges and issues are discussed in details. In order to save stationary nodes' power and enlarge the network lifetime, an optimization technique for relay node selection is proposed. Furthermore, for primary users (PU) protection, an energy detection-based scheme is suggested to calculate the probability of PU arrival. Our theoretical discussions and simulation results proved the efficient functionality of the proposed CR-VASNET as a promising vehicular networking paradigm.
Year
DOI
Venue
2014
10.1155/2014/154193
INTERNATIONAL JOURNAL OF DISTRIBUTED SENSOR NETWORKS
Field
DocType
Volume
Wireless,Spectrum management,Computer science,Packet loss,Computer network,Vehicular communication systems,Wireless sensor network,Relay,Vehicular ad hoc network,Cognitive radio,Distributed computing
Journal
2014
ISSN
Citations 
PageRank 
1550-1477
8
0.59
References 
Authors
25
5
Name
Order
Citations
PageRank
Mohammad Jalil Piran1272.44
Yongwoo Cho27812.12
Jihyeok Yun392.65
Amjad Ali410432.10
Doug Young Suh57719.96