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Journal Papers

Efficient QoS Support for Secondary Users in Cognitive Radio Systems
Citation key willkomm10efficient_qos_support
Author Willkomm, Daniel and Wolisz, Adam
Pages 16–23
Year 2010
ISSN 1536-1284
DOI 10.1109/MWC.2010.5547917
Journal IEEE Wireless Communications Magazine
Volume 17
Number 4
Month August
Abstract The fundamental condition for the legal approval of Dynamic Spectrum Access (DSA) approaches is the protection of the Primary User (PU). However, for DSA to become an attractive service reality, it is crucial to ensure also some Quality of Service (QoS) support for the Secondary User (SU) communication. In this paper, we discuss sensing based opportunistic spectrum access approaches, in which PU protection is achieved by a properly organized sensing process and SU communication reconfiguration. While the required reliability of the sensing process can be expressed in terms of rarely enough overlooking the PU, we assume that the proper QoS for the SU is given by maintaining — with a given confidence level — a minimum bandwidth availability for the SU in spite of PU dynamics. In this paper we present an overview of approaches which might be used to achieve these objectives. In addition we point out, that both the sensing process and the secondary link maintenance (necessary to keep the required bandwidth in spite of reconfiguration due to detected PUs) require a significant spectrum overhead. We identify and elaborate a fundamental tradeoff in using these overheads in either sensing or link maintenance, and present examples of its optimization.
Bibtex Type of Publication JournalPapersAndBookChapters
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Book chapters


Wiethölter, S. and Emmelmann, M. "Modeling Handover from the Access Networks Perspective", in Modeling and Tools for Network Simulation, pp. 341–356, March, 2010.

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de Baynast, A., Bohge, M., Willkomm, D. and Gross, J. "Physical Layer Modeling", in Modeling and Tools for Network Simulation, pp. 135–172, March, 2010.

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Hernández, J. A., López, V., García Dorado, J. L., Nejabati, R., Overby, H., Rostami, A., Vlachos, K. and Zervas, G. "Optical burst switching", in Enabling Optical Internet with Advanced Network Technologies, pp. 87-130, 2009.

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Emmelmann, M., Rathke, B. and Wolisz, A. "Mobility Support for Wireless PAN, LAN and MAN", in Mobile WiMAX: Toward Broadband Wireless Metropolitan Area, 2007.

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Sgroi, M., Wolisz, A., Sangiovanni-Vincentelli, A. and Rabaey, J. M. "A Service-Based Universal Application Interface for Ad Hoc Wireless Sensor and Actuator Networks", in Ambient intelligence, 2005.

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Book chapters (incollection)

Happ, D., Karowski, N., Menzel, T., Handziski, V. and Wolisz, A. "Enabling Cloud-centric IoT with Publish/subscribe Systems", in Internet of Things: Challenges, Advances and Applications, pp. 195–212, January, 2018.

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Budzisz, Ł. and Wolisz, A. "Home and enterprise networks", in Green Communications: Priciples, Concepts and Practice, May, 2015.

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Zubow, A., Fischer, J., Redlich, J.-P., Scheuermann, B., Schiller, J., Günes, M., Nagel, K., Wagner, P., Scheidgen, M., Eveslage, I., Sombrutzki, R. and Juraschek, F. "From Earthquake Detection to Traffic Surveillance – About Information and Communication Infrastructures for Smart Cities", in System Analysis and Modeling: Theory and Practice, vol. 7744, pp. 121–141, 2013.

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Ergin, M. O., Baydere, S., Cayirci, E., Hacioglu, I., Ollero, A., Maza, I., Viguria, A., Bonnet, P. and Lijding, M. "Applications and Application Scenarios", in Cooperating Embedded Systems and Wireless Sensor Networks (ISTE), 2010.

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Woesner, H., Maier, M. and Wolisz, A. "Comparison of Single-Hop and Multihop AWG-Based WDM Networks", in Next Generation Optical Network Design and Modelling, pp. 51–65, 2003.

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Kubisch, M., Karl, H. and Wolisz, A. "Are Classes of Nodes with Different Power Amplifiers Good for Wireless Multi-hop Networks?", in Lecture Notes in Computer Science, vol. 2775, pp. 841 - 846, 2003.

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Wolisz, A. "Information Access is Fine, But Who is Going to Pay", in New Developments in Distributed Applications and Interoperable Systems, pp. 149–160, September, 2001.

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Wolisz, A. "Wireless Internet Architectures: Selected Issues", in Personal Wireless Communications, pp. 1–16, September, 2000. (Invited Paper)

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Woesner, H. "Primenet - A Concept for a WDM-based Fiber Backbone", in Optical Network Design and Modelling, pp. 98–106, April, 1998.

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Röhl, C., Woesner, H. and Wolisz, A. "A Short Look on Power Saving Mechanisms in the Wireless LAN Standard IEEE 802.11", in Advances in Wireless Communications, pp. 219–226, April, 1998.

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Ebert, J.-P., Holtkamp, R., Wolisz, A. and Ramel, L. "A Distributed Media Access Control for Wireless ATM Environments", in Advances in Wireless Communications, pp. 93–108, April, 1998.

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Willig, A. and Schieferdecker, I. "Specifying and Verifying the Steam Boiler Control System with Time Extended LOTOS", in The Steam Boiler Case Study Book, November, 1996.

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Schulzrinne, H., Smirnov, M., Roth, R. and Wolisz, A. "IP Multicasting over ATM: The Multicube Approach", in Global Information Infrastructure (GII) Evolution. Interworking Issues, pp. 181–190, October, 1996.

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Wolisz, A., Schläger, M., Weinmiller, J. and Woesner, H. "Wireless access to high speed networks", in High-Speed Networking for Multimedia Applications, pp. 361–381, June, 1996.

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