| 摘要 |
The method comprises the steps of:
- sending a Sync message (SYNC) from a first peer-to-peer transparent clock (P2P TC B) to a second peer-to-peer transparent clock (P2P TC C),
- estimating the path delay of the transmission path travelled by the synchronization message from the first to the second peer-to-peer transparent clocks,
- and then taking this path delay into account for updating the time information carried by a synchronization message. For estimating said path delay, it comprises the steps of:
- creating a list of the network addresses of the network interfaces (IPRB, IPRI1, IPRI2, IPRC) traversed by the synchronization message (SYNC);
- ordering the first list into the order in which the network interfaces have been traversed by the Sync message (SYNC);
- creating a second list by reversing the order of the first list;
- communicating the second list to the second peer-to-peer transparent clock (P2P TC C);
- and using the mechanism available at the transport protocol level, to constrain the respective paths of Pdelay_Req and Pdelay_Resp messages so that their respective paths map to the second and first ordered lists of traversed interfaces. |
