DATA MAPPING METHOD AND SYSTEM FOR OPTICAL PATH TRANSPORT UNIT

摘要

The disclosure discloses a data mapping method and a data mapping system for an Optical channel Transport Unit-k (OTUk). The method comprises: writing OTUk data to a data storage First Input First Output (FIFO) module according to a valid signal for the OTUk data and a data storage state of the data storage FIFO module; controlling the data storage FIFO module to read and send the OTUk data to an OTUku overhead and data insertion module according to frame header information of an OTUku and the data storage state, and generating and sending a mapping adjustment overhead to the OTUku overhead and data insertion module; and inserting the OTUk data, the mapping adjustment overhead and the OTUku frame header and multi-frame information to a corresponding location of an OTUku frame by the OTUku overhead and data insertion module to generate an OTUku data frame. Through the disclosure, the clock loss caused by clock recovery is reduced, thereby increasing the number of optical ports interconnected, reducing the exceeding jitter caused by the interconnection of the optical ports, and ensuring normal communications in an optical transport network.