Method and device for inserting overhead into optical channel data unit frame (ODUk)

A technology of optical channel data and inserting units, which is applied in the field of communication, can solve problems such as many chip pins and complicated pin configuration process, and achieve the effects of saving the number of used, improving development efficiency, and effectively utilizing

Inactive Publication Date: 2010-01-20
ZTE CORP
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Problems solved by technology

[0003] The present invention provides a method and device for inserting overhead into an ODUk frame, which is used to solve the problem in the prior

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  • Method and device for inserting overhead into optical channel data unit frame (ODUk)
  • Method and device for inserting overhead into optical channel data unit frame (ODUk)

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[0029] In order to overcome the problem in the prior art that too many chip pins are used when inserting the overhead into the ODUk frame, which causes the subsequent pin configuration process to be too complicated, the present invention provides a method and device for inserting the overhead into the ODUk frame. The core idea is: define an appropriate bit width and depth storage module in the FPGA chip, and write the overhead bytes designated by the upper layer to be inserted into the ODUk frame structure and the overhead processing method into the storage module first. The write address should correspond to the overhead position of the ODUk frame structure. When the position to be inserted where the overhead byte is to be inserted in the ODUk data stream arrives, the overhead byte to be inserted stored in the corresponding address position in the storage module is read and inserted into the current position of the ODUk data stream.

[0030] The method and device for inserting t...

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Abstract

The invention discloses a method and a device for inserting an overhead into an optical channel data unit frame (ODUk). The method comprises the following steps: writing an upper-layer appointed overhead byte to be inserted and a processing way of the overhead byte into an address position which corresponds to the position to be inserted of the overhead byte to be inserted in a preset storage module in a field programmable gate array (FPGA) chip; when the position to be inserted of the overhead byte to be inserted in ODU data stream arrives, inquiring the processing way of the overhead byte to be inserted, which is stored in the corresponding address position in the storage module; and if the stored overhead processing way is insertion, inserting the overhead byte to be inserted, which is stored in the address position into the current position of the ODU data stream. The device comprises an upper-layer interface control unit, an overhead processing unit and an overhead inserting unit. The invention can fully save the use quantity of FPGA chip pins and realize the flexible management of upper-layer overhead writing.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method and a device for inserting overhead into an ODUk (Optical Data Unit, optical channel data unit) frame. Background technique [0002] In an OTN (Optical Transport Network, Optical Transport Network), overhead processing plays a very important role. It monitors the performance and faults of the point-to-point, segment-to-segment, and end-to-end paths of the data channel. It can quickly locate faults and transmit service types and network management information, providing guidance on how to further process services. For how to insert the overhead into the ODUk frame, the existing technology basically adopts a one-to-one correspondence method, that is, an independent pin is configured for one overhead. This overhead insertion method will cause excessive use of pins. In FPGA (Field Programmable Gate Array (Field Programmable Gate Array) chip development process has caused g...

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Application Information

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IPC IPC(8): H04W24/00
Inventor 鲁传好覃尉
Owner ZTE CORP
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