System, method and terminal processing apparatus for optical fiber transmission

An optical fiber transmission method, comprising a transmitting process from UE to a remote end and a receiving process from a remote end to UE,

• wherein the transmitting process comprises:
• A, a terminal processing unit encoding and encapsulating a signal from the UE, converting the signal into an optical signal and then sending to an optical transmission unit;
• B, the optical transmission unit multiplexing the optical signal and then sending the signal to a switch unit via optical fiber;
• and
• C, the switch unit converting the multiplexed signal into an electric signal and de-multiplexing the signal, determining a destination optical transmission unit of the de-multiplexed signal according to the type of the signal and sending the signal;
• and
• wherein the receiving process comprises:
• D, the switch unit multiplexing the signal to be sent to the optical transmission unit, converting the multiplexed signal to an optical signal and then sending the signal to the destination optical transmission unit via optical fiber;
• E, the optical transmission unit de-multiplexing the optical signal from the switch unit, and then sending the signal to the terminal processing unit;
• and
• F, the terminal processing unit converting the optical signal from the optical transmission unit into an electric signal, de-encapsulating and decoding the electric signal based on the type of the signal, and then sending the signal to the UE.

A terminal processing unit for use in an optical fiber transmission system, comprising a signal codec module, a terminal frame processing module, a terminal electric/optical signal processing module, a control and management information processing module, and a terminal overhead processing module, wherein

• the signal codec module encodes various signals sent by UE and sends a digital signals to the terminal frame processing module;
• at the same time, decodes a digital signals sent by the terminal frame processing module and sends the decoded signals to the UE;
• the terminal frame processing module receives the digital signals sent by the signal codec module, encapsulates the signals and sends the encapsulated signals to the terminal electric/optical signal processing module;
• meanwhile, de-encapsulates the electric signal sent by the terminal electric/optical signal processing module and then sends the signal to the signal codec module;
• the terminal electric/optical signal processing module converts the optical signal sent by an optical transmission unit into an electric signal and sends the electric signal to the terminal frame processing module;
• meanwhile, converts the electric signal sent by the terminal frame processing module into an optical signal and sends the optical signal to the optical transmission unit,
• the control and management information processing module generates a corresponding control and management message and sends the message to the terminal overhead processing module;
• meanwhile, receives a control and management message sent by the terminal overhead processing module;
• the terminal overhead processing module further comprises an overhead generation module and an overhead extraction module;
• the input of the overhead generation module is connected with the control and management information processing module, the output of the overhead generation module is connected with the terminal frame processing module;
• the input of the overhead extraction module is connected with the terminal frame processing module, and the output of an overhead extraction module is connected with the control and management information processing module.