タイミングと同期のテスト

Facebookは世界で最も人気を集めるウェブサイトの数々を生み出しています。同社のテクノロジーは世界中で数十億人の人々を支援し、データセンターのネットワークを活性化する重要な役割を負っています。

Solve synchronization challenges for enabling breakthrough 5G experiences.

Much has been done to accurately measure the time error associated with network equipment, however, measuring the time error of a 5G NR or 4G LTE base station with no 1pps output is a challenging problem. One option is to make a measurement of the downlink radio signal. This technology brief describes how to make such an over-the-air “time error” measurement by decoding and examining the synchronization signals and comparing them to an external time reference.

The roster of enterprises that have suffered costly and damaging lawsuits as a result of outages or security breaches would be shorter had those organizations invested in testing a vital, mission-critical foundation of the modern enterprise, the network infrastructure.

Though jitter and wander are closely related, their effects on networks and devices are quite different. Jitter directly causes bit errors at device inputs by the eye-closure mechanism.These bit errors then result in dropped packets. Wander does not impact the input stage but affects the ability of the internal clocking function to lock to and track the up-stream reference. Wander therefore impacts the distribution of clock references across networks.