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Rapid Intervention-based Adaptive Date Rate for Mobile LoRaWAN (RIADR)
Mohammad Al Mojamed
The Adaptive Data Rate (ADR) mechanism used by Long Range Wide Area Network (LoRaWAN) for resource allocation, is slow and ideal for static applications. However, a network with unsteady channel conditions due to mobility makes the ADR operation more difficult. Therefore, this paper proposes a Rapid Intervention-based Adaptive Data Rate (RIADR) for Mobile LoRaWAN applications. The proposed system rapidly interferes with any instability in the channel status between end devices and LoRaWAN gateways. It efficiently allocates the Spreading Factor (SF) for end devices on time. RIADR adapts itself to the dynamic link conditions caused by mobility to achieve optimal use of LoRaWAN. The proposed system was implemented and evaluated in the OMNeT++ network simulator using the FloRa framework. The simulation result indicates that the proposed system has outperformed the Blind ADR (BADR), which was proposed by Semtech for Mobile LoRaWAN applications. The ability to deliver traffic to the network server is improved by 5% and more while number of collisions is reduced almost 100 k times by the proposed system.
Keywords: LPWAN, Mobile LoRaWAN, Mobility, ADR, Blind ADR, SF allocation, Internet of Things
DOI: 10.32908/ahswn.v59.10469