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Broadcast Signaling for a Centralized Cognitive Radio Network with Distributed Control

Authors:
Nicolás Bolívar
José Marzo

Keywords: Broadcasting; Cognitive Pilot Channel; Cognitive Radio Networks; Dynamic Spectrum Access

Abstract:
For signaling and controlling a centralized Cognitive Radio Network (CRN) with users operating in different sets of channels, a dedicated common control channel is not a useful approach. Different strategies have been studied for this CRN control, some of them using time division mechanisms. This is because employing a channel per each Cognitive Radio User (CRU) for simultaneously controlling them is not efficient. However, for signaling specific events to all CRUs in a CRN, the Central Cognitive Base Station (CCBS) needs to communicate to all the operating devices in the CRN domain. Reducing the number of broadcast signaling channels is then a need for good performance and energy efficiency of the CRN. In this paper, for the solution of this broadcasting signaling problem, each CRU is represented by an array considering its channel usability. Using this array, a static evaluation of the problem is initially performed. Then, the dynamic characteristics of CRNs are included to find an acceptable number of channels to communicate to every user in a specific CRN.

Pages: 42 to 47

Copyright: Copyright (c) IARIA, 2011

Publication date: April 17, 2011

Published in: conference

ISSN: 2308-4251

ISBN: 978-1-61208-131-1

Location: Budapest, Hungary

Dates: from April 17, 2011 to April 22, 2011