A Reliable Handoff Mechanism for Mobile Industrial Wireless Sensor Networks

Area of Science:

• Industrial automation and control systems
• Wireless sensor networks
• Real-time communication systems

Background:

• Industrial Wireless Sensor Networks (IWSNs) are crucial for monitoring and control, but supporting mobile devices presents significant challenges.
• Existing research on mobile IWSNs is limited due to complex resource scheduling and rescheduling issues.
• Mobility support is essential for modern industrial production environments.

Purpose of the Study:

• To propose and validate an effective mechanism for guaranteeing handoff performance in mobile IWSNs.
• To address the limitations of current approaches in handling device mobility within industrial wireless networks.
• To enhance the reliability and timeliness of communication for mobile devices in industrial settings.

Main Methods:

• Development of a mobility-aware scheme incorporating temporary connection and quick registration.
• Implementation and testing of the proposed mechanism in both a testbed and a real industrial environment.
• Comparative analysis against the WirelessHART standard and RSSI-based approaches.

Main Results:

• The proposed mechanism significantly improves the accuracy of handoff triggering.
• It effectively solves the ping-pong effect commonly observed during handoffs.
• Achieved an average end-to-end packet delivery rate of 98.5% in mobile IWSN scenarios.
• Facilitates real-time communication and enhances overall network reliability.

Conclusions:

• The developed mechanism provides a robust solution for handoff management in mobile IWSNs.
• It offers superior performance in terms of accuracy, reliability, and packet delivery compared to existing standards.
• The successful implementation in a real industrial environment demonstrates its practical applicability and effectiveness.