A Cross-Layer Approach in Sensing and Resource Allocation for Multimedia Transmission over Cognitive UWB Networks

We propose an MAC centric cross-layer approach to address the problem of multimedia transmission over cognitive Ultra Wideband (C-UWB) networks. Several fundamental design issues, which are related to application (APP), medium access control (MAC), and physical (PHY) layer, are discussed. Although s...

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Bibliographic Details
Published inEURASIP journal on wireless communications and networking Vol. 2010; no. 1
Main Authors Mohd Aripin, Norazizah, Rashid, Rozeha A., Fisal, N., Lo, A. C. C., Ariffin, S. H. S., Yusof, S. K. S.
Format Journal Article
LanguageEnglish
Published Cham Springer International Publishing 01.01.2010
SpringerOpen
Subjects
Adaptive Cross-Layer Strategies for Fourth Generation Wireless Communications
Communications Engineering
Engineering
Information Systems Applications (incl.Internet)
Networks
Research Article
Signal,Image and Speech Processing
Medium Access Control
Medium Access Control Protocol
Central Controller
Cognitive Radio
Medium Access Control Layer
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Summary:We propose an MAC centric cross-layer approach to address the problem of multimedia transmission over cognitive Ultra Wideband (C-UWB) networks. Several fundamental design issues, which are related to application (APP), medium access control (MAC), and physical (PHY) layer, are discussed. Although substantial research has been carried out in the PHY layer perspective of cognitive radio system, this paper attempts to extend the existing research paradigm to MAC and APP layers, which can be considered as premature at this time. This paper proposed a cross-layer design that is aware of (a) UWB wireless channel conditions, (b) time slot allocations at the MAC layer, and (c) MPEG-4 video at the APP layer. Two cooperative sensing mechanisms, namely, AND and OR, are analyzed in terms of probability of detection ( ), probability of false alarm ( ), and the required sensing period. Then, the impact of sensing scheduling to the MPEG-4 video transmission over wireless cognitive UWB networks is observed. In addition, we also proposed the packet reception rate- (PRR-) based resource allocation scheme that is aware of the channel condition, target PRR, and queue status.
ISSN:1687-1499
1687-1472
1687-1499
DOI:10.1155/2010/467813