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A novel single-channel edge computing LoRa gateway for real-time confirmed messaging.
1The Department of Economics and Information Management, Shanghai University of Finance and Economics Zhejiang College, Jinhua, 321013, China. chen.zhong.jku@gmail.com.
Scientific Reports
|April 10, 2024
Summary
This study introduces a new LoRaWAN gateway with edge computing to speed up confirmed messaging. This innovation significantly reduces latency for critical IoT applications like emergency alerts.
Area of Science:
- Internet of Things (IoT)
- Wireless Communication Networks
- Edge Computing
Background:
- LoRaWAN is favored for IoT due to long range and low power, but slow confirmed messaging limits real-time applications.
- Existing LoRaWAN systems face significant delays in uplink confirmed messaging, hindering time-sensitive use cases.
- Limited research has addressed the latency issue in LoRaWAN confirmed messaging.
Purpose of the Study:
- To develop and evaluate a novel LoRaWAN gateway solution that significantly reduces confirmed messaging time.
- To leverage edge computing on the gateway to expedite the acknowledgment (ACK) process.
- To decrease the resource utilization of the central network server in LoRaWAN deployments.
Main Methods:
- Implementation of a novel LoRaWAN gateway incorporating edge computing capabilities.
- Local generation of acknowledgments (ACKs) at the gateway to bypass the network server.
- Extensive simulations and experimental validation of the proposed edge computing solution.
Main Results:
- Confirmed messaging time reduced to an average of 43 ms with a maximum of 2 retransmissions.
- Network server CPU, memory, and bandwidth utilization decreased by 14.05%, 1.77%, and 1151.41 kbps, respectively.
- Network server system load reduced from 2.15 to 1.69, with an estimated gateway cost reduction of 38%.
Conclusions:
- The proposed edge computing gateway effectively minimizes LoRaWAN confirmed messaging latency.
- Edge computing integration enhances network server efficiency and reduces operational costs.
- This solution enables LoRaWAN for critical IoT applications requiring rapid, confirmed data transmission.
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