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Smart Mina: LoRaWAN Technology for Smart Fire Detection Application for Hajj Pilgrimage

Computer Systems Science & Engineering 2022年第1期40卷 259-272页

作者： mohammad al mojamed Computer Science Department Computing College-AlqunfudahUMM Al-QURA UniversityMeccaSaudi Arabia

The Long-Range Wide Area Network(LoRaWAN)is one of the used communication systems that serve and enables the deployment of the Internet of Things(IoT),which occasionally transmit small size *** part of the Low Power Wide Area Network(LPWAN),LoRaWAN is characterized by its ability for low power *** addition,it is built to provide more extended coverage and higher capacity with minimum *** this paper,we investigate the feasibility and scalability of LoRaWAN for the Mina area using a realistic network ***,known as the world’s largest tent city,is a valley located in the east of Makkah city and surrounded by *** accommodates up to 3 million pilgrims annually and contains more than 100000 *** performance was evaluated based on a fire detection-like *** simulations were conducted using the OMNeT++simulator and Flora model to determine the delivery ratio,collision,and SF distribution for the simulated sce-nario with a network consisting of up to ten thousand end *** conducted simulations show a promising result for LoRaWAN technology for Mina *** showed a consistent performance for LoRaWAN in most simulated scenarios when a high success ratio was achieved.

关键词： LoRa LoRaWAN LPWAN IOT flora smart city Mina

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A Duty Cycle-Based Gateway Selection algorithm for LoRaWAN Downlink Communication

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Computer Systems Science & Engineering 2023年第6期45卷 2953-2970页

作者： mohammad al mojamed Computer Science Department Umm Al-Qura UniversityAl-QunfudahSaudi Arabia

Long Range Wide Area Network(LoRaWAN)has been developed to meet the requirements for the enormous device-to-device communication of Inter-net of Things(IoT)networks,which consist of a large number of participating devices spread over large coverage areas with low data rates and low power *** supports communications in both directions,uplink,and downlink ***,the downlink communication in the current LoRaWAN raises the bottleneck issue at gateways due to the used gateway selection *** paper proposes a novel gateway selection algorithm based on the duty cycle time-off values for the existing gateways,Duty Cycle Gateway Selection(DCGS),to direct acknowledgment packets as downlink traffic towards the most suitable ***,the proposed system avoids subsequent retransmission of previously sent traffic that leads to excessive traffic overloading the *** proposed system avoids exhausting a gateway duty cycle with downlink traffic by distributing the downlink traffic among available gateways based on the duty cycle time *** is evaluated using FloRa and INET frameworks in the well-known network simulator OMNeT++.The result shows the superior perfor-mance of the proposed approach over the existing Signal-to-Noise ratio(SNR)based selection *** clearly indicates that the DCGS maintains a better confirmed packet delivery rate while reducing number of retransmissions,colli-sions,and power consumption.

关键词： LoRa LoRaWAN gateway selection IoT downlink LPWAN

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