Internet of Things (IoT) enabled technology in the current applications such as smart grids, smart cities, and smart health sectors utilize wireless sensor networks (WSN) to establish stable and reliable communication between the nodes. Moreover, the primary requirement of WSN in IoT applications is to provide low-rate data communication. The IEEE 802.15.4e standard-based medium access control (MAC) protocol is found suitable for low-rate data communication in WSN. The IEEE 802.15.4e standard adopts a deterministic and synchronous multichannel extension (DSME) MAC protocol which employs a multisuperframe structure with multichannel data transmission during the contention free period. However, the guaranteed time slot (GTS) allocation process in DSME employed by the standard may not be suitable for an adaptive traffic network scenario that has a direct impact on the throughput and bandwidth utilization. In this article, we develop a priority and range-based DSME-GTS allocation algorithm based on the priorities of end nodes and range estimation. Furthermore, the proposed algorithm is developed for the two types of network scenarios encountered in a star topology-enabled WSN. In scenario-1, the slots allocation process is carried out based on the priorities of end nodes. Next, in scenario-2, the slots allocation process is carried out based on the range estimation of end nodes. Detailed mathematical modeling of the proposed methodology is provided for the various performance metrics. The model is validated using the MATLAB 2017a programming tool. Simulation results show that the proposed methodology outperforms the existing DSME-GTS approaches in terms of performance metrics such as packet delivery ratio, end-to-end delay, packet loss ratio, throughput, delay, bandwidth utilization, and the energy consumption.

中文翻译：

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IEEE 802.15.4e媒体访问控制协议中优先级和基于范围的确定性同步多信道扩展保证时隙分配的建模与分析

当前应用中的物联网 (IoT) 技术，例如智能电网、智能城市和智能健康部门，利用无线传感器网络 (WSN) 在节点之间建立稳定可靠的通信。此外，物联网应用中 WSN 的主要要求是提供低速率数据通信。发现基于 IEEE 802.15.4e 标准的媒体访问控制 (MAC) 协议适用于 WSN 中的低速率数据通信。IEEE 802.15.4e 标准采用确定性和同步多通道扩展 (DSME) MAC 协议，该协议采用多超帧结构，在无竞争期间进行多通道数据传输。然而，标准采用的 DSME 中的保证时隙 (GTS) 分配过程可能不适用于对吞吐量和带宽利用率有直接影响的自适应交通网络场景。在本文中，我们基于端节点的优先级和范围估计开发了一种基于优先级和范围的 DSME-GTS 分配算法。此外，所提出的算法是针对星形拓扑启用的 WSN 中遇到的两种网络场景开发的。在场景一中，时隙分配过程是根据端节点的优先级进行的。接下来，在场景 2 中，基于端节点的范围估计执行时隙分配过程。为各种性能指标提供了所提出方法的详细数学建模。该模型使用 MATLAB 2017a 编程工具进行验证。仿真结果表明，所提出的方法在数据包交付率、端到端延迟、丢包率、吞吐量、延迟、带宽利用率和能耗等性能指标方面优于现有的 DSME-GTS 方法。