<p>The emergence of Industrial IoT (IIoT) has led to the development of various protocols and standards aimed at enhancing its performance. The "Prioritized Contention Access" (PCA) scheme, introduced in the IEEE 802.15.4-2020 standard, addresses the needs of IIoT applications by ensuring minimal latency for the transmission of sensitive and critical data. Concurrently, the Wake-Up Radio (WuR) approach has significantly improved the performance of Wireless Sensor Networks (WSNs), key components of both IoT and IIoT networks, by reducing latency and power consumption. Recent studies have shown WuR’s effectiveness in meeting IIoT delay requirements, particularly in light traffic conditions. In this paper, we propose WuRECA-MAC, an enhanced collision avoidance MAC protocol inspired by "slotted PCA" to meet the stringent requirements of WuR-based IIoT networks under heavy traffic loads. WuRECA-MAC employs variable Clear Channel Assessments (CCAs) before sending Wake-Up Calls (WuCs), instead of the fixed two CCAs specified in the standard, and sets a delay threshold for data delivery. A theoretical model using a Discrete Time Markov Chain (DTMC) is developed to evaluate WuRECA-MAC’s performance, and its effectiveness is validated through simulation using MiXiM/OMNeT++. Our results demonstrate that WuRECA-MAC with variable CCAs significantly improves performance under heavy traffic conditions while ensuring Quality of Service (QoS) in terms of end-to-end delay.</p>

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An enhanced Collision Avoidance Wake-Up Radio MAC protocol for Industrial IoT Networks

  • Mayssa Ghribi,
  • Aref Meddeb

摘要

The emergence of Industrial IoT (IIoT) has led to the development of various protocols and standards aimed at enhancing its performance. The "Prioritized Contention Access" (PCA) scheme, introduced in the IEEE 802.15.4-2020 standard, addresses the needs of IIoT applications by ensuring minimal latency for the transmission of sensitive and critical data. Concurrently, the Wake-Up Radio (WuR) approach has significantly improved the performance of Wireless Sensor Networks (WSNs), key components of both IoT and IIoT networks, by reducing latency and power consumption. Recent studies have shown WuR’s effectiveness in meeting IIoT delay requirements, particularly in light traffic conditions. In this paper, we propose WuRECA-MAC, an enhanced collision avoidance MAC protocol inspired by "slotted PCA" to meet the stringent requirements of WuR-based IIoT networks under heavy traffic loads. WuRECA-MAC employs variable Clear Channel Assessments (CCAs) before sending Wake-Up Calls (WuCs), instead of the fixed two CCAs specified in the standard, and sets a delay threshold for data delivery. A theoretical model using a Discrete Time Markov Chain (DTMC) is developed to evaluate WuRECA-MAC’s performance, and its effectiveness is validated through simulation using MiXiM/OMNeT++. Our results demonstrate that WuRECA-MAC with variable CCAs significantly improves performance under heavy traffic conditions while ensuring Quality of Service (QoS) in terms of end-to-end delay.