Journal
IEEE TRANSACTIONS ON GREEN COMMUNICATIONS AND NETWORKING
Volume 7, Issue 2, Pages 839-854Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TGCN.2022.3222853
Keywords
Internet of Things (IoT); mobile data collec-tor (MDC); data collection and aggregation; vacation queueing system; stochastic geometry; energy consumption
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As a promising architecture, Mobile Data Collector (MDC) enhanced Internet of Things (IoT) has great potential in efficient data collection and aggregation for sparse deployment scenarios. By combining queueing theory and stochastic geometry, an analytical framework is proposed to study the network performance of an MDC enhanced IoT network. The framework allows quantification of the impact of key system parameters on network performance and provides guidelines for minimizing end-to-end delay.
As a promising architecture, Mobile Data Collector (MDC) enhanced Internet of Things (IoT) exhibits broad prospects in efficient data collection and data aggregation especially for sparse deployment scenarios. Combining the tools from queueing theory and stochastic geometry, we propose an analytical framework to study the network performance of an MDC enhanced IoT network, in terms of coverage probability, end-to-end delay and energy consumption. We derive the closed-form expressions for average contact and inter-contact time between a sensor and its associated MDC. By modeling the data collection system between a sensor and its associated MDCs as an M/G/1 queue system with vacations and general limited (G-limited) service, we first derive the queueing delay at the tagged sensor, and further obtain the end-to-end delay. The proposed analytical framework enables us to quantify the effect on network performance of key system parameters, such as MDC velocity, packet arrival rate, densities of sensors and MDCs, and contact radius. This study reveals that the MDC velocity has little impact on the coverage probability, and provides guidelines to minimize the end-to-end delay by optimizing the density and contact radius of sensors, and the velocity and density of MDCs.
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