Method, system and device for passive optical network data transmission

A method for passive optical network (PON) data transmission, comprising:

• connecting a central office optical line terminal (OLT) (S-OLT) and a local OLT (L-OLT) through a transmission link to form a transmission network;
• receiving, by the L-OLT, service data sent by a first optical network unit (ONU), and transmitting the service data to the S-OLT through a transmission channel of the transmission network;
• receiving, by the S-OLT, the service data sent by the L-OLT from the transmission channel of the transmission network, and sending the service data to a service network;
• receiving, by the S-OLT, the service data sent by the service network, and sending the service data to the L-OLT through the transmission channel of the transmission network;
• and
• receiving, by the L-OLT, the service data sent by the S-OLT from the transmission channel of the transmission network, and sending the service data to the first ONU.

A device for passive optical network (PON) data transmission, comprising a service adaptation module, a channel adaptation module, a line interface module, and a master control module, wherein:

• the line interface module is connected to a transmission link, and adapted to connect to other devices for PON data transmission to form a transmission network;
• the service adaptation module is adapted to receive service data sent by a service network, send the service data to the channel adaptation module;
• and receive the service data sent by the channel adaptation module, and send the service data to the service network;
• the channel adaptation module is adapted to adapt the service data from the service adaptation module to a transmission channel, and send the transmission channel to the line interface module;
• and extract the service data from the transmission channel received by the line interface module, and send the service data to the service adaptation module;
• and
• the master control module is adapted to control the service adaptation module, the channel adaptation module, and the line interface module.

A device for passive optical network (PON) data transmission, comprising a PON tributary module, a channel adaptation module, a line interface module, and a master control module, wherein:

• the PON tributary module is adapted to receive service data sent by each optical network unit (ONU) on a PON tributary, and send the service data to the channel adaptation module;
• and send the service data from the channel adaptation module to each ONU on the PON tributary;
• the line interface module is connected to a transmission link, and is adapted to connect to other devices for PON data transmission to form a transmission network;
• the channel adaptation module is adapted to adapt the service data from the PON tributary module to a transmission channel, and send the transmission channel to the line interface module;
• and extract the service data from the transmission channel received by the line interface module, and send the service data to the PON tributary module;
• and
• the master control module is adapted to control the PON tributary module, the channel adaptation module, and the line interface module.