Edge-Fog-Cloud Computing Hierarchy for Improving Performance and Security of NB-IoT-Based Health Monitoring Systems.

Area of Science:

• Internet of Things (IoT) in Healthcare
• Distributed Computing Systems
• Wireless Communication Networks

Background:

• Remote health monitoring systems require efficient data transmission and processing for large numbers of devices.
• Existing architectures face challenges with latency, power consumption, and security for widespread vital signs monitoring.
• Narrow-Band IoT (NB-IoT) offers low-power, wide-area communication suitable for IoT healthcare applications.

Purpose of the Study:

• To propose and evaluate a novel three-layer computing architecture (Edge, Fog, Cloud) for remote health vital signs monitoring.
• To leverage NB-IoT for efficient, low-power communication with a high density of healthcare devices.
• To enhance system security and reduce data processing and transmission delays.

Main Methods:

• Implementation of a three-tier architecture: Edge, Fog, and Cloud computing layers.
• Integration of Narrow-Band IoT (NB-IoT) for device communication.
• Application of machine learning algorithms (Decision Tree, SVM, Logistic Regression) for data analysis.
• Security enhancement through investigation of various authentication protocols.
• Performance evaluation using simulation tools (CloudSim, iFogSim, ns3-NB-IoT) with real vital signs data.

Main Results:

• Achieved a 59.9% reduction in NB-IoT delay.
• Reduced average execution time by 38.5%.
• Decreased authentication time by 35.1% for a large number of devices.
• Demonstrated the architecture's capability to handle a large scale of devices and extensive areas.

Conclusions:

• The proposed Edge, Fog, and Cloud architecture effectively supports efficient remote health monitoring.
• Combining NB-IoT with a multi-layer computing approach optimizes performance for large-scale IoT healthcare systems.
• The architecture successfully addresses challenges in latency, power consumption, and security for vital signs monitoring.