Clock synchronization method and device
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- NEW H3C TECH CO LTD
- Publication Date
- 2014-10-08
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Abstract
Description
technical field
[0001] The present invention relates to the field of communication technology, in particular to a clock synchronization method and device. Background technique
[0002] In a communication network, the normal operation of many services requires network clock synchronization, that is, the time or frequency difference between devices in the entire network is kept within a reasonable error level. Network clock synchronization includes time synchronization and frequency synchronization. The so-called time synchronization means that the frequency and phase between the signals are consistent, that is, the phase difference between the signals is always zero; the frequency synchronization means that the frequency between the signals Or maintain a strict specific relationship in phase, and the signals appear at the same average rate at their corresponding effective instants to ensure that all devices in the communication network operate at the same rate, that is, maint...