Performance Analysis of CSMA/CA and PCA for Time Critical Industrial IoT Applications

Malyala, Pavana Ravi Sai Kiran and P, Rajalakshmi (2018) Performance Analysis of CSMA/CA and PCA for Time Critical Industrial IoT Applications. IEEE Transactions on Industrial Informatics. ISSN 1551-3203 (In Press)

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Recently proposed IEEE 802.15.4-2015 MAC introduced a new Prioritized Contention Access (PCA) for transfer of time-critical packets with lower channel access latency compared to CSMA/CA. In this paper, we first propose a novel Markov chain based analytical model for unslotted CSMA/CA and PCA for industrial applications. The unslotted model is further extended to derive the analytical model for slotted CSMA/CA and PCA. Primary emphasis is laid on understanding the performance of PCA compared to CSMA/CA for different traffic classes in industrial applications. The performance analysis shows the slotted PCA achieves a reduction of 63.3% and 97% in delay and power consumption respectively compared to slotted CSMA/CA, whereas unslotted PCA achieves a delay reduction of 53.3% and reduction of power consumption by 96% compared to unslotted CSMA/CA without any significant loss of reliability. The proposed analytical models for both slotted and unslotted IEEE 802.15.4-2015 MAC offer satisfactory performance with less than 5% error when validated using Monte Carlo simulations. Also, the performance is verified using real-time testbed.

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Item Type: Article
Uncontrolled Keywords: Analytical models, CSMA/CA, Delays, IEEE 802.15 Standard, IEEE 802.15.4
Subjects: Electrical Engineering
Divisions: Department of Electrical Engineering
Depositing User: Team Library
Date Deposited: 19 Feb 2018 06:50
Last Modified: 19 Feb 2018 06:50
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