| 摘要 |
<p>Embodiments of the present invention provide a method and a device for sending data in a passive optical network. The method for sending data in a passive optical network includes: recording, by a central office processing device, a downstream superframe number of a downstream data frame, and obtaining a loop delay between the central office processing device and a terminal processing device according to the recorded downstream superframe number in combination with an upstream superframe number and an upstream frame synchronization sign in an upstream channel-associated data frame sent by the terminal processing device, so that the central office processing device may, after subtracting the loop delay, accurately determine, by using cached BWMAP information and an obtained equalization delay of the terminal processing device, a start time point and an end time point for sending an upstream service data frame to an optical line terminal, thereby implementing accurate sending control of the upstream service data frame.</p> |
