Posts about Grandmaster Clock

Synchronization is now an enabler for many high-value services. In the case of new mobile technologies, it’s even a prerequisite for service availability. Quite simply – if you don’t have sync you don’t have service! Synchronization enables business and if ever the flow of dollars is stopped someone will pay. With this kind of value attached, it’s no surprise that there’s so much interest both in the provision of synchronization as a service and in monitoring the service quality ...

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Financial markets are currently governed by strict rules; one of these being the requirement to record when a deal has been brokered. Typically, the finance industry has logged this by day, date and time. However, new rules to be introduced in 2018 will mean much more stringent parameters are put in place ...
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The new “enhanced” primary reference time clock (PRTC) recommendation from the International Telecommunication Union (ITU), G.8272.1, looks set to be one of this year’s key innovations in the world of network synchronization. Aimed at producing the levels of accuracy necessary for 5G, enhanced PRTCs (ePRTCs) go far beyond the current technology. While the time output of today’s PRTCs should be accurate to within 100ns of Coordinated Universal Time (UTC), this new generation of clocks promises to deliver time to within just 30ns. ePRTCs also offer a greater level of reliability – unlike current PRTC technology, which has no holdover specifications, the emerging enhanced clocks are able to hold time accurately for 14 days, ensuring time service performance during GNSS outages ...
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The continuing evolution of radio access network technology and the introduction of packet-based mobile backhaul have created a major paradigm shift for network synchronization. Packet networks need to address synchronization requirements that were once inherently provided by the network. And they need to support increased clock accuracy and greater availability of synchronization signals as the quality of experience of mobile services is increasingly dependent on base station clocks that are aligned accurately and have high stability.
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