Enhanced clock frequency control

A system comprising:

• a clock system that tracks time using a clock signal having a clock frequency;
• an interface to receive a time reference from a reference clock;
• and
• a feedback loop configured to synchronize the clock system with the reference clock, the feedback loop comprising:
• a feedback loop controller configured to determine a clock frequency adjustment for the clock system based on an offset between the time reference and a time indicated by the clock system;
• and
• a smoothing filter configured to alter the clock frequency adjustment determined using the feedback loop controller;
• wherein the feedback loop is configured to update the clock frequency of the clock system based on the altered clock frequency adjustment.

A method performed by a clock system of a communication system, the method comprising:

• tracking, by the clock system, time and generating a clock signal having a clock frequency;
• receiving, by the clock system, a packet comprising a time reference from a master clock;
• determining, by the clock system, an offset between the time reference and a time indicated by the clock system;
• using, by the clock system, a feedback loop controller to determine a clock frequency adjustment for the clock system based on the offset;
• applying, by the clock system, a smoothing filter to alter the clock frequency adjustment determined using the feedback loop controller;
• and
• updating, by the clock system, the clock system using the altered clock frequency adjustment.