Method for realizing intersection of asynchronous ODU0 (Optical Data Unit 0) with 80G volume

Abstract

The invention relates to a method for realizing intersection of asynchronous ODU0 (Optical Data Unit 0) with 80G volume. The method comprises the following steps: firstly, constructing a 64-path ODU0 synchronous processing unit and a synchronously processed 64-path ODU0 signal intersecting output module; performing complete intersecting treatment on a clock domain; and lastly, performing rear-terminal frame-forming treatment on a completely intersected data and outputting the data, wherein the synchronous processing unit comprises 64 synchronous processing modules for synchronizing 64-path parallel ODU0 signals, the 64-path parallel ODU0 signals are 64-path asynchronous ODU0 signals, all the asynchronous signals are converted into the signals,64 sets of signals in total, in a same clock domain, all the signals are synchronized on a clock REF_CLK, and the clock REF_CLK is a local reference clock and also is the clock for synchronously outputting all the ODU0 signals. According to the method provided by the invention, a large-volume asynchronous ODU0 intersecting function can be conveniently designed in a FPGA (field programmable gate array) device, a method for realizing the large-volume asynchronous ODU0 intersection in the FPGA device is provided and the device is provided with the large-volume ODU0 intersecting function.

Description

technical field [0001] The invention relates to the field of OTN (Optical Transport Network) equipment, in particular to a crossover realization method of an 80G capacity asynchronous ODU0. In particular, it refers to the implementation method of extracting the ODUO (optical data unit 0) signal from the asynchronous ODU1 (optical data unit 1) and ODU2 (optical data unit 2) described in the G.709 mapping system for large-capacity and small-grain asynchronous crossover. Background technique [0002] With the rapid development of broadband services and the gradual rise of new services such as softswitch and 3G (third-generation mobile communication technology), IP (Internet Protocol) services in the metropolitan area network have gradually become the largest service type, and most of them are based on GE (Gigabit Ethernet) business-oriented. In December 2009, the G.709 mapping system stipulated the ODU0 bearer mode of GE services. Therefore, it is very important to schedule an...

AI Technical Summary

Problems solved by technology

The device needs to realize the full crossover function of 64 asynchronous parallel ODU0 signals. If it directly performs high-speed asynchronous parallel data crossover processing, it is not feasible to directly implement it according to the clock crossover selection resources and timing control principles of current FPGA devices.

Images