Distributed Quality-of-Service Support in Cognitive Radio Networks
Authors: Berlemann, Lars
Department of Communication Networks (ComNets), Faculty 6, RWTH Aachen University
: Lars Berlemann
Ph. D. Dissertation RWTH Aachen University, ABMT 50, p. 272, ISBN:3-86130-179-2,Wissenschaftsverlag Mainz, 2006.
Publication Date: Feb, 2006
On page(s):272
ISBN: 3-86130-179-2
Abstract
Intelligent radio systems, so-called cognitive radios, are a promising way out of the regulatory dilemma of satisfying the consumer demand for freely available spectrum on the one hand and the underutilization of many licensed frequency bands on the other hand. Cognitive radios autonomously coordinate spectrum sharing in learning from their environment. They essentially increase the efficiency of spectrum utilization through interference avoidance and local re-use of frequency bands originally designated for exclusive operation.
This thesis provides an overview about the options for radio spectrum regulation and dynamic spectrum access with a special focus on spectrum sharing. The rising demand in wireless communication for free available spectrum goes along with increasing restrictions to spectrum utilization, i.e., Quality-of-Service (QoS) requirements. The QoS enhancements of IEEE 802.11e are described and evaluated in this thesis.
Spectrum sharing, either of unlicensed frequency bands or opportunistically used spectrum, requires a coordinated medium access of the competing cognitive radios to support nevertheless QoS. The distributed QoS support in modified IEEE 802.11e cognitive radio networks is analyzed and evaluated in this thesis. Spectrum sharing among cognitive radios is discussed in applying and comparing solution concepts derived from information and game theory. These approaches allow cognitive radios to support and guarantee QoS when sharing spectrum without requiring direct information exchange in observing past spectrum utilization.
This thesis further highlights the specification of these two spectrum sharing algorithms in a policy description language, allowing transparency and traceability in decision making about spectrum usage of cognitive radios.
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@PHDTHESIS{Diss_ber_2006,
AUTHOR = {Berlemann, L.},
TITLE = {Distributed Quality-of-Service Support in Cognitive Radio Networks},
YEAR = {2006},
MONTH = {Feb},
VOLUME = {50},
PAGES = {272},
PUBLISHER = {Wissenschaftsverlag Mainz},
ADDRESS = {Aachen, Germany},
SCHOOL = {RWTH Aachen University},
SERIES = {ABMT},
EDITION = {1},
AFFILIATION = {Department of Communication Networks (ComNets), Faculty 6, RWTH Aachen University},
ISBN = {3-86130-179-2},
URL = {https://www.comnets.rwth-aachen.de}
}