DocumentCode :
36112
Title :
Modeling IEEE 802.15.4 Networks Over Fading Channels
Author :
Di Marco, Piergiuseppe ; Fischione, Carlo ; Santucci, Fortunato ; Johansson, Karl H.
Author_Institution :
ACCESS Linnaeus Center, R. Inst. of Technol., Stockholm, Sweden
Volume :
13
Issue :
10
fYear :
2014
fDate :
Oct. 2014
Firstpage :
5366
Lastpage :
5381
Abstract :
Although the performance of the medium access control (MAC) of the IEEE 802.15.4 has been investigated under the assumption of ideal wireless channel, the understanding of the cross-layer dynamics between MAC and physical layer is an open problem when the wireless channel exhibits path loss, multi-path fading, and shadowing. The analysis of MAC and wireless channel interaction is essential for consistent performance prediction, correct design and optimization of the protocols. In this paper, a novel approach to analytical modeling of these interactions is proposed. The analysis considers simultaneously a composite channel fading, interference generated by multiple terminals, the effects induced by hidden terminals, and the MAC reduced carrier sensing capabilities. Depending on the MAC parameters and physical layer thresholds, it is shown that the MAC performance indicators over fading channels can be far from those derived under ideal channel assumptions. As novel results, we show to what extent the presence of fading may be beneficial for the overall network performance by reducing the multiple access interference, and how this information can be used for joint selection of MAC and physical layer parameters.
Keywords :
Zigbee; access protocols; fading channels; radiofrequency interference; IEEE 802.15.4 networks; MAC parameters; carrier sensing capabilities; cross-layer dynamics; fading channels; medium access control; multi-path fading; multiple access interference; path loss; shadowing; wireless channel interaction; wireless sensor network; Analytical models; Fading; IEEE 802.15 Standards; Network topology; Topology; Wireless communication; Wireless sensor networks; Fading channel; IEEE 802.15.4; WSN; interference; medium access control; multi-hop;
fLanguage :
English
Journal_Title :
Wireless Communications, IEEE Transactions on
Publisher :
ieee
ISSN :
1536-1276
Type :
jour
DOI :
10.1109/TWC.2014.2349499
Filename :
6880427
Link To Document :
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