Patent ID: 9525541
Filing Date: 2016-12-20
CPC Classification: H04J,H04L,H04Q

Claim Text:
1. A communication system, comprising: a plurality of base stations; an optical line terminal (OLT); a fiber for transmitting information between the plurality of base stations and the OLT; and a clock synchronization server coupled to the OLT; wherein the clock synchronization server is configured to receive a synchronization reference signal of a satellite system, create common synchronization data according to the synchronization reference signal, and transmit the common synchronization data to the OLT; wherein the OLT is configured to relay the common synchronization data to each of the plurality of base stations; wherein the each of the plurality of base stations is configured to transmit synchronization response data to the OLT in response to the common synchronization data; wherein the OLT is further configured to relay the synchronization response data to the clock synchronization server; and wherein the clock synchronization server and the each of the plurality of base stations synchronize clocks according to an IEEE 1588V2 protocol, so that the OLT does not perform clock synchronization with the each of the plurality of base stations.