naa a22 4500 510798608 CHVBK 20180411083345.0 cr unu---uuuuu 180411e20131001xx s 000 0 eng 10.1007/s11277-013-1184-y doi (NATIONALLICENCE)springer-10.1007/s11277-013-1184-y CogNS: A Simulation Framework for Cognitive Radio Networks [Elektronische Daten] [Vahid Esmaeelzadeh, Reza Berangi, Seyyed Sebt, Elahe Hosseini, Moein Parsinia] Cognitive radio technology has been used to efficiently utilize the spectrum in wireless networks. Although many research studies have been done recently in the area of cognitive radio networks (CRNs), little effort has been made to propose a simulation framework for CRNs. In this paper, a simulation framework based on NS2 (CogNS) for cognitive radio networks is proposed. This framework can be used to investigate and evaluate the impact of lower layers, i.e., MAC and physical layer, on the transport and network layers protocols. Due to the importance of packet drop probability, end-to-end delay and throughput as QoS requirements in real-time reliable applications, these metrics are evaluated over CRNs through CogNS framework. Our simulations demonstrate that the design of new network and transport layer protocols over CRNs should be considered based on CR-related parameters such as activity model of primary users, sensing time and frequency. Springer Science+Business Media New York, 2013 Cognitive radio networks (CRN) nationallicence Simulation framework nationallicence Network Simulator 2 (NS2) nationallicence Performance evaluation nationallicence Esmaeelzadeh Vahid Wireless Networks Laboratory, Department of Computer Engineering, Iran University of Science and Technology, Tehran, Iran aut Berangi Reza Wireless Networks Laboratory, Department of Computer Engineering, Iran University of Science and Technology, Tehran, Iran aut Sebt Seyyed Wireless Networks Laboratory, Department of Computer Engineering, Iran University of Science and Technology, Tehran, Iran aut Hosseini Elahe Wireless Networks Laboratory, Department of Computer Engineering, Iran University of Science and Technology, Tehran, Iran aut Parsinia Moein Wireless Networks Laboratory, Department of Computer Engineering, Iran University of Science and Technology, Tehran, Iran aut Wireless Personal Communications Springer US; http://www.springer-ny.com 72/4(2013-10-01), 2849-2865 0929-6212 72:4<2849 2013 72 11277 https://doi.org/10.1007/s11277-013-1184-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11277-013-1184-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Esmaeelzadeh Vahid Wireless Networks Laboratory, Department of Computer Engineering, Iran University of Science and Technology, Tehran, Iran aut NATIONALLICENCE 700 1- Berangi Reza Wireless Networks Laboratory, Department of Computer Engineering, Iran University of Science and Technology, Tehran, Iran aut NATIONALLICENCE 700 1- Sebt Seyyed Wireless Networks Laboratory, Department of Computer Engineering, Iran University of Science and Technology, Tehran, Iran aut NATIONALLICENCE 700 1- Hosseini Elahe Wireless Networks Laboratory, Department of Computer Engineering, Iran University of Science and Technology, Tehran, Iran aut NATIONALLICENCE 700 1- Parsinia Moein Wireless Networks Laboratory, Department of Computer Engineering, Iran University of Science and Technology, Tehran, Iran aut NATIONALLICENCE 773 0- Wireless Personal Communications Springer US; http://www.springer-ny.com 72/4(2013-10-01), 2849-2865 0929-6212 72:4<2849 2013 72 11277 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer