Method and device for assessing the performance of one or more packet synchronization services in a packet data transmission network

摘要

A method for assessing the performance of packet synchronization services in a packet data transmission network. The method includes, at a packet data transmission network probing point, determining at least two synchronization quality describing or influencing parameters based on at least one of a digital timing signal (Sp) received, the recovered time information for at least one timing parameter transmitted into the packet data transmission network, and parameters having impact on the synchronization quality and describing or controlling properties of hardware components present at a receiving network node. The method also includes, at the packet data transmission network probing point, determining a value of at least one synchronization performance score based on the at least two synchronization quality describing or influencing parameters.

主权项

1. A method for assessing and monitoring the performance of one or more packet synchronization services in a packet data transmission network,
the packet data transmission network comprising
(i) a transport network for receiving, from a central time information distribution node for transmitting into a transport network a digital timing signal (Sp) including a central time information for at least one of the timing parameters absolute time, relative time, frequency and phase, and(ii) at least one receiving network node for receiving the digital timing signal (Sp) via the transport network, detecting the central time information included in the digital timing signal (Sp) received and using the central time information in order to synchronize the at least one timing parameter at the receiving network node and the central time information distribution node; the method comprising the steps of: (a) at a packet data transmission network probing point, determining at least two synchronization quality describing or influencing parameters based on at least one of the digital timing signal (Sp) received, the recovered time information for the at least one timing parameter and parameters having impact on the synchronization quality and describing or controlling properties of hardware components present at the receiving network node; (b) at the packet data transmission network probing point, determining a value of at least one synchronization performance score for a given time interval based on the at least two synchronization quality describing or influencing parameters each for the same time interval, the at least one synchronization performance score each having a respective predefined scoring scale covering a given range of values; and (c) at the packet data transmission network probing point, collecting the values of the at least one synchronization performance score for one or more given collection time intervals and storing or displaying these synchronization performance score values for monitoring purposes.