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A Design of a Time Synchronization Protocol Based on Dynamic Route and Forwarding Certification
Dejing Zhang1, Yuan Yuan1, Yanqing Bi1
1School of Mechanical, Electrical & Information Engineering, Shandong University, Weihai 264209, China.
Sensors (Basel, Switzerland)
|September 9, 2020
Summary
This study introduces a dynamic routing and forwarding certification protocol for wireless sensor networks. It improves time synchronization accuracy and reduces network traffic by selecting optimal reference nodes and certifying data forwarders.
Area of Science:
- Computer Science
- Network Engineering
Background:
- Time synchronization is crucial for large-scale wireless sensor networks (WSNs).
- Existing protocols struggle with synchronization error accumulation, clock skew, and dynamic network topologies.
Discussion:
- The proposed Dynamic Routing and Forwarding Certification-Time Synchronization Protocol (DRFC-TSP) addresses these challenges.
- It selects optimal reference nodes per hop to minimize synchronization errors and clock skew impact.
- Forwarding certification ensures only reliable nodes relay synchronization data, reducing network load.
Key Insights:
- DRFC-TSP effectively restrains synchronization error accumulation and mitigates clock frequency skew.
- Dynamic routing adapts to network topology changes by updating reference nodes each round.
- Forwarding certification enhances synchronization precision while decreasing network traffic and energy use.
Outlook:
- The protocol's feasibility is validated through NS2 simulations for large-scale WSNs.
- Further performance evaluations were conducted on an embedded Linux platform.
- DRFC-TSP offers a robust solution for precise and efficient time synchronization in WSNs.
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