Data transmission method, system and operator fringe node

Abstract

The embodiment of the invention discloses a data transmission method, a data transmission system and an operator fringe node. The method in the embodiment of the invention comprises the following steps of: performing passive optical network (PON) physical layer processing to acquire a PON media access control (MAC) frame; processing the PON MAC frame to acquire the next generation of xPON MAC frame, wherein the PON MAC frame is positioned in a load of the xPON MAC frame; and performing xPON physical layer processing on the xPON MAC frame to acquire an xPON physical layer signal and sending the xPON physical layer signal. The embodiment of the invention also provides a data transmission system and related equipment. The data transmission method, the data transmission system and the operator fringe node in the embodiment of the invention can effectively reduce the data transmission cost, prolong the optical transmission distance and reduce the realization complexity.

Description

technical field [0001] The present invention relates to the communication field, in particular to a data transmission method, system and operator edge node. Background technique [0002] Passive Optical Network (PON, Passive Optical Network) technology is a point-to-multipoint optical access technology, which consists of an optical network unit (ONU, Optical Network Unit), an optical splitter, and an optical path termination point (OLT, Optical Line Termination) and the optical fiber connecting this device. As a central office device, the OLT is connected to an optical splitter (Optical splitter) through a trunk fiber. The optical splitter connects each ONU through a separate branch fiber. In the downstream direction, the optical splitter realizes the splitting function. Send the downlink optical signal of the OLT to all ONUs; in the uplink direction, the optical splitter realizes the optical signal aggregation function, aggregates the optical signals sent by all ONUs, and ...

AI Technical Summary

Problems solved by technology

[0006] However, WDM adopts the point-to-point (P2P, Point to Point) technology of colored light, that is, both the WDM equipment near the ONU and the WDM equipment near the OLT are colored, and it is necessary to provide an optical transceiver for each wavelength on the WDM equipment. device, and P2P fiber cannot be shared, so the cost of such data transmission process is relatively high;

[0007] Secondly, because PON (such as GPON / EPON) usually uses time division multiplexing for optical transmission, that is, PON usually uses burst mode for optical transmission, while the existing OTN uses WDM equipment for continuous mode optical transmission, so PON The data transmission method of over OTN needs to support the conversion from burst mode to continuous mode, which realizes complex

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