Method and system for providing clock synchronization by packet network

Abstract

The invention relates to a method and system for making clock synchronization by packet network, and its kernel: establishing a clock synchronization logic tree in IP packet network to compose an IP clock synchronization network; converting clock information into IP data message by clock gateway device and transmitting the IP data message in the IP clock synchronization network according to the established clock synchronization logic tree so as to transmit the clock information to devices in the packet network.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method and system for providing clock synchronization through a packet network. Background technique [0002] At present, it is becoming a trend to provide services through a unified IP packet network, but the IP packet network is connectionless and non-synchronous, and there is no strict guarantee for delay and packet transmission sequence. However, traditional circuit services require timing synchronization information, which needs to be provided on the IP packet network, which requires timing synchronization information to be provided on the IP. [0003] At present, some technologies have proposed schemes to provide synchronous timing on the packet IP network, including the use of RTP protocol, ACM (Adaptive Clock Recovery) scheme, etc. These schemes only involve the technology of clock recovery, and do not explain how to provide the entire network on the IP network. Timin...

AI Technical Summary

Problems solved by technology

[0006] 1. A new set of synchronous timing network needs to be built, and the cost of network construction is high

[0007] 2. The data network and the circuit network are not completely unified, and maintenance operations are more difficult

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