| 摘要 |
<p>Disclosed are a method and a system for time synchronization in a passive optical network. The method includes: an OLT transmitting a first time t n and an OLT MPCP counter value s n corresponding to the first time t n to an ONU; after receiving the t n and s n , in conjunction with ranging information, the ONU calculating a corresponding second time t' n through a determined ONU MPCP counter value, or calculating a corresponding ONU MPCP counter value s' n through a determined second time t' n , and updating a local time. According to the solution provided in the present invention, the time of the synchronization setting can be flexibly selected without real time requirements, the processing flow is simple, and the occupation of the bandwidth is reduced.</p> |
