A Hierarchical Routing Graph for Supporting Mobile Devices in Industrial Wireless Sensor Networks

Area of Science:

• Computer Science
• Network Engineering
• Wireless Communication

Background:

• Industrial Wireless Sensor Networks (IWSNs) require real-time and reliable communication for industrial applications.
• Existing routing graph construction schemes fail to address the challenges posed by mobile devices in dynamic industrial environments.
• Network topology changes caused by mobile devices disrupt established communication paths, leading to potential equipment malfunction.

Purpose of the Study:

• To propose a novel Hierarchical Routing Graph Construction (HRGC) method to support mobile devices in IWSNs.
• To ensure reliable and uninterrupted communication in industrial environments with moving devices.
• To overcome the limitations of existing routing schemes that only consider static devices.

Main Methods:

• The HRGC method employs a two-phase hierarchical graph construction approach.
• Phase 1: Construction of a robust 'skeleton graph' using only static devices, ensuring stability against topology changes.
• Phase 2: 'Grafting' mobile devices onto the skeleton graph to establish pre-defined routes for seamless communication.

Main Results:

• The proposed HRGC method effectively handles network topology variations caused by mobile devices.
• The skeleton graph provides a stable foundation, preventing route breaks and communication failures.
• Simulation results demonstrate a significant improvement in the packet delivery ratio using the HRGC approach.

Conclusions:

• HRGC offers a robust solution for reliable communication in industrial environments with mobile devices.
• The hierarchical approach ensures seamless connectivity by pre-establishing routes for mobile nodes.
• This method enhances the overall performance and dependability of Industrial Wireless Sensor Networks.