| 摘要 |
The invention relates to a method and system for adjusting a clock signal placed in a network element of a data network. The clock signal is adjusted on the basis of difference values formed by means of received synchronizing messages. Each difference value is a difference of a reception time value and a transmission value of a received synchronizing message. The reception time value of the synchronizing message depends on a cumulated number of periods of the clock signal at a moment of arrival of the synchronizing message, and the transmission value depends on a position of the synchronizing message in a chronological transmission order of the synchronizing messages. In the adjusting process, an adjusting effect of the difference values belonging to a lower part ( 304 ) of a margin of fluctuation ( 306 ) of the difference values is weighted more heavily than an adjusting effect of the difference values belonging to an upper part ( 305 ) of the margin of fluctuation of the difference values. Thus, for adjusting the clock signal, there can be used that share of information represented by the received synchronizing messages that has the least interference, irrespective of the load situation of the data network.
|
