Method and a device for controlling a clock signal generator

A network element comprising:

• at least one egress port and at least one ingress port for connecting to a data transfer network,
• a controllable clock signal generator, and
• a control device,
• wherein the control device comprises a processor for forming a control quantity on the basis of reception moments of timing messages, the reception moments being expressed as time values based on a first clock signal and the timing messages being transmitted in accordance with a second clock signal, wherein the processor is further configured to:
• form at least one additional control quantity on the basis of the reception moments of the timing messages,
• calculate a weighted sum of the control quantity and the at least one additional control quantity, and
• control the controllable clock signal generator with the weighted sum of the control quantities so as to achieve synchronization between the first clock signal and the second clock signal.

A method for controlling a clock signal generator, the method comprising:

• forming a control quantity on the basis of reception moments of timing messages, the reception moments being expressed as time values based on a first clock signal and the timing messages being transmitted in accordance with a second clock signal,
• forming at least one additional control quantity on the basis of the reception moments of the timing messages,
• calculating a weighted sum of the control quantity and the at least one additional control quantity, and
• controlling the clock signal generator with the weighted sum of the control quantities so as to achieve synchronization between the first clock signal and the second clock signal.

A non-transitory computer readable medium encoded with a computer program for controlling a clock signal generator, the computer program comprising computer executable instructions for controlling a programmable processor to:

• form a control quantity on the basis of reception moments of timing messages, the reception moments being expressed as time values based on a first clock signal and the timing messages being transmitted in accordance with a second clock signal,
• form at least one additional control quantity on the basis of the reception moments of the timing messages,
• calculate a weighted sum of the control quantity and the at least one additional control quantity, and
• control the clock signal generator with the weighted sum of the control quantities so as to achieve synchronization between the first clock signal and the second clock signal.