Distributed GNSS-Based Time Synchronization and Applications

摘要

The paper deals with synchronization standards,applications and challenges in the modern packet switchedtelecommunication networks. In recent years, the number oftime-dependent services and systems only increases with thedevelopment of such areas as Internet of Things (IoT), industrialInternet, remote automation and robotics, precise positioningetc. In the paper, these emerging applications are discussed. Analternative way to the traditional centralized synchronizationinfrastructure is proposed. Compact and low-priced devicesequipped with a Global Navigation Satellite System (GNSS) receiverand a reliable internal clock can be installed specifically inthe places where they are needed without additional intelligencein the network itself. Thus, distributed synchronization approachbrings together the providers of time-critical information andsources of precise timing.