Related Experiment Video
Updated: Dec 22, 2025

Large Scale Energy Efficient Sensor Network Routing Using a Quantum Processor Unit
Published on: September 8, 2023
Resource Allocation to Massive Internet of Things in LoRaWANs
Arshad Farhad1, Dae-Ho Kim1, Jae-Young Pyun1
1Department of Information and Communication Engineering, Chosun University, Gwangju 61452, Korea.
This study introduces two novel spreading factor (SF) allocation schemes for Long-Range Wide Area Networks (LoRaWAN) to reduce packet loss. These methods improve the packet success ratio by adaptively managing interference, enhancing network performance.
Area of Science:
- Wireless communication networks
- Internet of Things (IoT) technologies
- Network performance optimization
Background:
- Long-Range Wide Area Network (LoRaWAN) uses ALOHA for channel access, leading to packet collisions from intra- and inter-spreading factor (SF) interference.
- High packet loss ratios occur in LoRaWAN due to end devices (EDs) defaulting to higher SFs after retransmissions, diminishing network orthogonality and increasing collision probability.
Purpose of the Study:
- To propose and validate two new SF allocation schemes for LoRaWAN.
- To enhance the packet success ratio by mitigating the impact of intra- and inter-SF interference.
- To improve overall LoRaWAN network efficiency and reliability.
Main Methods:
- Developed a channel-adaptive SF recovery algorithm that adjusts SF based on ED retransmission data, reflecting channel status.
- Introduced an SF allocation method based on end-device (ED) sensitivity during initial network deployment.
- Validated proposed schemes through extensive simulations, considering interference in confirmed and unconfirmed LoRaWAN modes.
Main Results:
- Demonstrated adaptive SF application to individual EDs across the network.
- Showcased significant enhancement in packet success delivery ratio compared to traditional SF allocation methods.
- Quantified the reduction in packet loss attributed to the proposed interference mitigation strategies.
Conclusions:
- The proposed SF allocation schemes effectively address packet collisions and loss in LoRaWAN.
- Adaptive SF management based on channel conditions and ED sensitivity improves network performance.
- These strategies offer a viable solution for optimizing LoRaWAN reliability in challenging interference environments.
More Related Videos
Related Concept Videos
Short-distance Transport of Resources
Distributed Loads
For example, consider a bookshelf filled with books stacked vertically adjacent to each other. The weight of the books is evenly distributed over the length of the shelf. As a result, the pressure at different locations on the surface of the...
Distributed Loads: Problem Solving
Transformers in Distribution System
Distribution substation transformers come in various ratings and typically use mineral oil for insulation and cooling. To prevent moisture and air from entering the oil, some transformers use an inert gas like nitrogen to fill the...
Maximum Power Flow and Line Loadability
Lattice Centering and Coordination Number
Types of Unit Cells
Imagine taking a large number of identical...

