| 摘要 |
There is provided a node for facilitating time distribution in communication networks, and more specifically for time synchronization in digital television (DTV) distribution network. The node comprises an interface, a clock for establishing a local time, and a time-locked loop. The interface is configured for interconnecting the node to at least one neighboring node over an isochronous transport link for transmission and reception of repetitive frames comprising time information. The time-locked loop is configured for, based on remote time information received via the interface and local time information from the clock, synchronizing the clock to the clock of one of the at least one neighboring node. This facilitates that the node, or a corresponding synchronous network comprising nodes according to the inventive concept, is rather insensitive to network delays. In this way the requirements on the network infrastructure are reduced. In particular, there is no need for dedicated networks. Further, a synchronous network, a method for the node and a method for a synchronous network is provided. |
