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A real‐time noise resilient data link layer mechanism for unslotted IEEE 802.15.4 networks
Author(s) -
Okdem Selcuk
Publication year - 2017
Publication title -
international journal of communication systems
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.344
H-Index - 49
eISSN - 1099-1131
pISSN - 1074-5351
DOI - 10.1002/dac.2955
Subject(s) - computer science , ieee 802.11 , frame (networking) , physical layer , ieee 802 , fading , computer network , ieee 802.15 , channel (broadcasting) , wireless , ieee 802.11w 2009 , noise (video) , ieee 802.11b 1999 , ieee 802.11u , ieee 802.11a 1999 , ieee 802.11g 2003 , wireless network , telecommunications , orthogonal frequency division multiplexing , wireless sensor network , image (mathematics) , artificial intelligence
Summary Institute of Electrical and Electronics Engineers (IEEE) 802.15.4 is a protocol operating in media access control and physical layer, and it is commonly used in low‐power and low data‐rate wireless communications. In this paper, we develop a stochastic model for unslotted operations of IEEE 802.15.4 networks. Signal fading is an important factor in mobile communications. According to the level of fading, signal‐to‐noise ratio gets dynamically changing values. Given a pair of nodes communicating to each‐other in a mobile channel, the model calculates frame sizes providing maximum data‐rate of successful IEEE 802.15.4 transmissions. The experimental results in various environments are given in the paper to discuss the success of the model. In the consideration of real‐time operations, the model is improved to be operated in a low‐complexity hardware/software unit. According to experimental results presented in the paper, the proposed model seems to be suitable in mobile environments by achieving high data‐transfer rate for unslotted IEEE 802.15.4 protocol. Copyright © 2015 John Wiley & Sons, Ltd.