Performance of D2D/NB-IOT Communications in Urban and Suburban Environments

Smart cities are witnessing exceptional growth in their connections, increasing the need for LPWA com-munications, i.e. low-bitrate, coverage enhancement, ultra-low power consumption, and massive terminal access. 5G Narrowband-IoT, has emerged to satisfy these requirements. Notwithstanding, it prese...

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Bibliographic Details
Main Authors: Sumoza Matos, Rodolfo Leonardo, Lujan, Emmanuel, Mocskos, Esteban Eduardo
Format: Conference Proceeding
Language:English
Subjects:
Interference
Performance evaluation
Quality of service
Sensitivity analysis
Smart cities
Solids
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Summary:Smart cities are witnessing exceptional growth in their connections, increasing the need for LPWA com-munications, i.e. low-bitrate, coverage enhancement, ultra-low power consumption, and massive terminal access. 5G Narrowband-IoT, has emerged to satisfy these requirements. Notwithstanding, it presents limitations in extreme coverage scenarios, where devices can lose connectivity unnecessarily. The addition of Device-to-Device (D2D), thus, connecting out-of-coverage devices with a base station through a relay, is a solid approach for mitigating these issues. More comprehensive performance and sensitivity analyses are required to achieve this goal. This study targets two typical scenarios, urban and suburban, measuring the impact of the duty cycle, path-loss, retransmissions and interference, regarding the expected delivery ratio, end-to-end delay, and the QoS. Our simulations show how the behavior of these quantities leads to a novel strategy to avoid disconnection.
ISSN:1558-4305
DOI:10.1109/WSC52266.2021.9715330