Method for transmitting data of passive optical network data link layer
A data transmission method and data link layer technology, applied in the communication field, can solve the problems of not supporting label forwarding, poor demarcation performance, and low encapsulation efficiency, and achieve direct support for label forwarding, simple encapsulation method, and high encapsulation efficiency Effect
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[0049]The core of the present invention is to obtain a data link layer data encapsulation method, which needs to have high IP packet encapsulation efficiency; can support label forwarding; can address optical network units; and can ensure extremely high transmission accuracy. ; Provide frame header synchronization search and delimitation method, frame delimitation is fast and efficient; physical layer overhead and signaling overhead are realized by special control frames. In addition, the method also needs to provide optical network unit (ONU) clock synchronization and power adjustment signals, so that the optical line terminal (OLT) has sufficient time to perform clock synchronization and receive power adjustment to adapt to the transmit power of different optical network units.
[0050] Specifically, the present invention combines the special topology and medium access control mode of the passive optical network, that is, shared medium and time division multiple access, and prop...
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