Timestamping accuracy is of the utmost importance to achieve accurate time synchronization of large-scale connected systems. However, the heterogeneity and complexity inherent to Internet of Things (IoT) systems lead to multi-source timestamping uncertainties and significantly deteriorate performance of traditional inflexible synchronization methods. In this paper, a situation-aware hybrid time synchronization protocol is designed based on multi-source timestamping uncertainty modeling and integrated time information exchange mechanism for heterogeneous IoT systems. More specifically, the multi-source timestamping error inherent to the overall synchronization process are accurately modeled by exploring the impact of the multi-faceted operating conditions. By analyzing the real-time timestamping uncertainties, a hybrid time synchronization scheme is actualized, which can achieve optimal synchronization strategy for clock parameters estimation. In addition, an integrated time information exchange mechanism is designed to reduce timestamping redundancy during time synchronization. Simulation results show that the proposed scheme can enhance the synchronization accuracy for heterogeneous operating scenarios.
Situation-Aware Hybrid Time Synchronization Based on Multi-Source Timestamping Uncertainty Modeling
01.09.2022
603864 byte
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Precise Timestamping and Temporal Synchronization in Multi-Sensor Fusion
British Library Conference Proceedings | 2011
|SITUATION-AWARE, INTELLIGENT DATA-SYNCHRONIZATION METHODS FOR UAV-INSPECTION APPLICATIONS
Europäisches Patentamt | 2022
|Situation-aware, intelligent data-synchronization methods for UAV-inspection applications
Europäisches Patentamt | 2023
|Mobile unit and method for timestamping a message exchanged with the mobile unit
Europäisches Patentamt | 2018
|