Clock system protects telecomms against GNSS data loss

October 31, 2016 // By Graham Prophet
Microsemi has announced its TimeSource “Enhanced Primary Reference Time Clock” to protect against GNSS vulnerabilities; presented as the first such system available, it has been designed to meet an ITU recommendation, ITU-T G.8272.1 to provide secure timing infrastructure to telecommunications and mobile operators.

Microsemi’s TimeSource Enhanced PRTC “generates time” by producing its own independent time scale aligned with GNSS, while its phase, time and frequency signal outputs remain autonomous. This provides users in the communications, power, public safety, data centre and government network markets with a secure infrastructure, reducing dependency on GNSS and enabling network operators to retake control of the timing source used for network synchronization. The system is also designed to meet the stringent new ITU-T Recommendation G.8272.1, which requires accuracy to within 30 nsec or better when verified against a time standard such as UTC.

 

“Worldwide telecommunications, power utilities and other infrastructure customers are in critical need of protection against GNSS vulnerability, and Microsemi’s new TimeSource Enhanced PRTC provides a powerful, high performance solution to address this need,” said Randy Brudzinski, vice president and business unit manager of Microsemi’s Frequency and Time division. “In addition, maintaining less than 30 nsec performance is important to mobile operators who require a high level of accuracy to support LTE/4G and the upcoming deployment of 5G.”

 

Microsemi adds; “massive deployment of GNSS as a timing source for synchronizing telecommunications networks (both wired and wireless) has created security risks to a point where governments, major telecommunications/mobile operators and enterprises are now urgently looking to protect their networks against both regional GNSS issues as well as the potential of a global GNSS outage. Microsemi’s TimeSource Enhanced PRTC works with the company’s caesium clocks to ensure time is generated in an autonomous manner. Specifically, the TimeSource Enhanced PRTC’s “source of time” aligns accurately with GNSS time without being dependent upon it—avoiding any vulnerability to threats caused by jamming and spoofing.

 

Microsemi; www.microsemi.com/product-directory/3425-timing-synchronization#sync-systems