ODU frame-like mapping method and device

A mapping method and type of technology, applied in the field of communication, to achieve the effect of improving scheduling efficiency

Active Publication Date: 2013-11-06
SANECHIPS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there is no solution suitable for mapping all customer data packets or frames to ODUk, or mapping all low-order ODUs to high-order ODUs

Method used

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  • ODU frame-like mapping method and device
  • ODU frame-like mapping method and device
  • ODU frame-like mapping method and device

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Embodiment Construction

[0031] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0032] Such as figure 1 As shown, it is a schematic diagram of a preferred embodiment of the ODUa frame structure in the present invention; in this embodiment, the ODUa frame includes the above-mentioned ODUa frame including a frame header, a payload, a fixed padding, and a check field, and the size is N×M, where the frame The header field indicates the payload information in the frame; the payload field is the useful data transmitted by the frame; the fixed padding field is useless data, which can be 0 or other fixed values, and this field is removed w...

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Abstract

The invention relates to an ODU frame-like mapping method and device. The ODU frame-like mapping method comprises the following steps: input data are transmitted under a low frequency clock after entering a mapping access, and number signals of the input data are transmitted under a high frequency clock after entering the mapping access; then, the input data are mapped into an ODU a.ts, and time slot intersecting / interweaving is conducted on the ODU a.ts. The ODU frame-like mapping device comprises an FIFO module, a Cm / Cnd generation module, an ODUMAP module, a CROSSBAR module and an OH_Insert module. The ODU frame-like mapping method and device realize unified mapping of existing optical network signals, enable the mapping and the interweaving to be integrated, and improve dispatching efficiency.

Description

technical field [0001] The invention relates to the field of communication, in particular to a method and device for mapping a similar ODU (Optical Data Unit) (ODUa) frame. Background technique [0002] In the existing GMP (General Mapping) technology, a certain client data packet is mapped to an ODUk or a low-order ODU is mapped to a high-order ODU. [0003] In ODUk, ODU is literally translated as optical data unit, which is professionally called optical channel data unit, k is the level of ODU, and k can take values ​​of 0, 1, 2, 3, 2e, 1f, 3e1, 3e2, 4, etc. ODU1 is the information structure after adding OPU1 overhead and ODU1 overhead to 2.5G client signals; ODU2 is the information structure after adding OPU2 overhead and ODU2 overhead to 10G client signals (of course, it can also be the information structure of 4 ODU1 multiplexing + ODU2 overhead) ; ODU3 is the information structure after adding OPU3 overhead and ODU3 overhead to the 40G client signal (of course, it can...

Claims

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Application Information

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IPC IPC(8): H04L1/00H04Q11/00
Inventor 路长斌王通巫上清李应飞赵丽娟
Owner SANECHIPS TECH CO LTD
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