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A cross-layer approach in sensing and resource allocation for multimedia transmission over cognitive UWB Networks

Mohd. Aripin, Norazizah and Abd. Rashid, Rozeha and Fisal, Norsheila and Lo, Anthony C. C. and Syed Ariffin, Sharifah Hafizah and Syed Yusof, Sharifah Kamilah (2010) A cross-layer approach in sensing and resource allocation for multimedia transmission over cognitive UWB Networks. Eurasip Journal on Wireless Communications and Networking . ISSN 1687-1472

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Official URL: http://dx.doi.org/10.1155/2010/467813

Abstract

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 (Pd), probability of false alarm (P f), 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.

Item Type:Article
Subjects:Unspecified
Divisions:Electrical Engineering
ID Code:22791
Deposited By: Kamariah Mohamed Jong
Deposited On:07 Feb 2017 06:52
Last Modified:26 Feb 2017 02:41

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