Cognitive Radio Networks with Elastic Traffic

Document type: Conference Papers
Peer reviewed: Yes
Full text:
Author(s): Jorge Martinez-Bauset, Alexandru Popescu, Vicent Pla, Adrian Popescu
Title: Cognitive Radio Networks with Elastic Traffic
Conference name: Eighth Euro-NF Conference on Next Generation Internet (NGI)
Year: 2012
City: Karlskrona
Organization: Blekinge Institute of Technology
Department: School of Computing (Sektionen för datavetenskap och kommunikation)
School of Computing S-371 79 Karlskrona
+46 455 38 50 00
Authors e-mail:,,,
Language: English
Abstract: We model and evaluate an infrastructure based cognitive radio network where impatient unlicensed or secondary users (SUs) offer elastic traffic. The interference created by SUs to the licensed users is analyzed when the secondary network uses two different spectrum access schemes, the conventional random access scheme and a new scheme we refer to as access with preference. To further control the interference, a limit is set to the number of channels SUs have access to. With this new constraint, the abandonment probability, the mean delay and throughput of the SUs degrades significantly. To improve the QoS perceived by the active SUs, we define and evaluate an admission control scheme for the SUs.
Subject: Computer Science\Networks and Communications
Telecommunications\Modelling of Bursty Traffics
Keywords: Cognitive radio networks, spectrum access, elastic traffic, performance evaluation
EU Project ID: Euro NF