NS-2 based simulation framework for cognitive radio sensor networks

Syed Hashim Raza Bukhari, Sajid Siraj, Mubashir Husain Rehmani
2016 Wireless networks  
In this paper, we propose a simulation model for cognitive radio sensor networks (CRSNs) which is an attempt to combine the useful properties of wireless sensor networks and cognitive radio networks. The existing simulation models for cognitive radios cannot be extended for this purpose as they do not consider the strict energy constraint in wireless sensor networks. Our proposed model considers the limited energy available for wireless sensor nodes that constrain the spectrum sensing process
more » ... n unavoidable operation in cognitive radios. Our model has been thoroughly tested by per-forming experiments in different scenarios of CRSNs. The results generated by the model have been found accurate which can be considered for realization of CRSNs. Keywords Cognitive radio · dynamic spectrum access · wireless sensor networks · cognitive radio sensor networks · simulation model. Introduction Wireless sensor networks (WSNs) are battery powered devices that can sense, transmit and relay data continuously to the other information-seeking nodes. Due to their battery-powered nature, the sensors are designed for low-power low-range transmissions, and the network operates in a multi-hop fashion where information is relayed through multiple intermediate nodes. WSNs have been traditionally designed with fixed channel coding schemes, and therefore work in a fixed range of frequencies. As a consequence, the available spectrum quickly gets occupied as the density of sensor nodes increases. However, although occupied, the channel is still under-utilized as wireless sensors are designed to cap-2 Syed Hashim Raza Bukhari et al. Simulator patch Goal Platform WSN CRSN MC PR activity EM A project to facilitate sensor network simulations NS-2 JiST / SWANS [6] A high performance discrete event simulation engine Java S3 [7]
doi:10.1007/s11276-016-1418-5 fatcat:yqvnqc4bondilml7smb6ansbsa