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http://dx.doi.org/10.12673/jant.2016.20.3.252

WLAN OFDMA Random Access Based Communications for In-Aircraft Wireless Sensor Networks  

Ahn, Woojin (Department of Electrical and Electronic Engineering, Yonsei University)
Kim, Ronny Yongho (Department of Railroad Electrical and Electronics Engineering, Korea National University of Transportation)
Publication Information
Journal of Advanced Navigation Technology / v.20, no.3, 2016 , pp. 252-257 More about this Journal
Abstract
In this paper a novel access scheme for uplink multiuser transmission based on IEEE 802.11ax random access in in-aircraft wireless sensor networks is proposed. The proposed scheme provides an efficient access control mechanism with three divisions of OFDMA backoff counter (OBO): access, deferring, dropping, which controls the number of potential uplink transmission stations. The proposed scheme can be used efficiently in in-aircraft wireless sensor network where a large number of sensors need to be supported. By using the proposed scheme, since in-aircraft sensors attempt channel access using the proposed differentiated OBO parameters, the number of stations exceeds the access capacity can be efficiently controlled. This paper also provides the mathematical analysis of the proposed scheme, regarding the optimal parameters. According to the performance analysis, the proposed scheme is able to efficiently control the access behavior of wireless sensors in the network.
Keywords
In-aircraft wireless sensor network; Wireless local area network; Internet of things; Random access; Load balancing;
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