Open AccessSingle CCA for IEEE 802.15.4 networks: a cross layer energy model
Author(s) -
Biswas Sankalita,
Dhar Roy Sanjay,
Chandra Aniruddha
Publication year - 2019
Publication title -
iet networks
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.466
H-Index - 21
ISSN - 2047-4962
DOI - 10.1049/iet-net.2018.5108
Subject(s) - computer science , phy , frame (networking) , network allocation vector , transmission (telecommunications) , energy (signal processing) , physical layer , markov chain , computer network , distributed coordination function , layer (electronics) , media access control , markov model , ieee 802.11 , throughput , telecommunications , wireless , mathematics , statistics , chemistry , organic chemistry , machine learning
For data frame transmissions in beacon‐enabled mode, an IEEE 802.15.4 node performs two consecutive clear channel assessments (CCAs) to sense the channel after back off. Here, the authors study what would happen if the medium access control (MAC) layer performs only one CCA instead. Although it is apparent that the frame transmission cycle would be shortened with single CCA, it is not straightforward to assess the effect of single CCA on the overall transmission energy. A Markov chain‐based MAC operation model is therefore constructed to analyse single‐CCA‐based MAC layer parameters. A combined physical (PHY) and MAC layer energy model is formulated next. It was found that the single CCA‐based MAC outperforms its standard double CCA‐based counterpart from the energy efficiency perspective.