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What is GNSS?

Satellite sync

Reliable network timing delivered by signals from the global navigation satellite system (GNSS) is a critical component of many services we now take for granted. It’s the foundation of network timing in sectors ranging from power utilities through to broadcast networks. Telecommunications networks too would be significantly less advanced without GNSS-based synchronization. It provides a highly accurate source of time, keeping all parts of the network in sync and enabling operational efficiency. Without it, many advanced LTE-A and 5G services and applications simply wouldn’t be possible.

Driving the future

Autonomous vehicle will require the accuracy, availability and reliability of highly precise GNSS-based sync technology with robust redundancy protection.
Our solutions all use a combination of GNSS and network-based timing to achieve 5G levels of accuracy better than one microsecond.

End-to-end synchronization

GNSS satellites deliver accurate time to IEEE 1588 PTP grandmaster and NTP server clocks equipped with GNSS timing receivers, which then distribute the information across the entire packet network.

Global timing

GNSS encompasses four main satellite systems: GPS (the USA), GLONASS (Russia), BeiDou (China), and Galileo (Europe). Network operators exploit the whole of this GNSS grid as a source for Coordinated Universal Time (UTC), the primary standard for worldwide clock synchronization. IEEE 1588 PTP grandmaster clocks on the ground then use this highly accurate timing source to deliver precise phase and time information across the entire packet network, thereby ensuring efficient, uninterrupted service delivery. There are times, however, when GNSS signals are lost or interrupted, and so GNSS receivers need to have redundancy protections and long holdover capacity built-in to compensate.

GNSS assurance

Our network management system includes an advanced AI-based toolkit that helps assure GNSS timing service.

The ultimate GNSS toolkit

Our Oscilloquartz range of GNSS grandmaster devices supports all major GNSS satellite systems and comes in an array of configurations suited to a wide range of deployment scenarios. Advanced features include a dual GNSS antenna and receiver algorithm for reducing interference from multipath signals, while complete redundancy is guaranteed due to the inclusion of high-quality oscillators. Our solutions all use a combination of GNSS and network-based timing to achieve levels of accuracy better than one microsecond. This assures the tight phase sync necessary for next-generation LTE-A and 5G networks as well as power utility, enterprise and broadcast networks.

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