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Transmission apparatus and signal mapping method

A technology of transmission equipment and mapping method, applied in multiplexing communication, selection device of multiplexing system, electrical components, etc., can solve the problems of inefficient mapping of signal frame transmission performance, deterioration, etc.

Inactive Publication Date: 2014-04-30
FUJITSU LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, signals cannot be efficiently mapped and frame transmission performance degrades

Method used

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  • Transmission apparatus and signal mapping method
  • Transmission apparatus and signal mapping method
  • Transmission apparatus and signal mapping method

Examples

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Embodiment Construction

[0083] Embodiments will now be described in detail with reference to the accompanying drawings. figure 1 An example of the structure of the transmission device is illustrated. The transmission device 10 includes an insertion control unit 11 and a frame transmission unit 12 .

[0084] When a signal including service information (hereinafter referred to as "client signal") is mapped to a frame whose rate is higher than that of the client signal, the insertion control unit 11 performs insertion control so as to insert the client signal and stuff bytes into the client signal to be mapped to the payload area of ​​the frame. The frame transmission unit 12 transmits (delivers) the frame after insertion control.

[0085] Insertion control unit 11 inserts client signals or stuff bytes into the payload area.

[0086] figure 2 Frame format is exemplified. The size of the frame 20 transmitted by the transmission device 10 is m lines x n (bytes). An overhead area 21 storing monitor...

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Abstract

A transmission apparatus exercises insertion control for inserting a client signal and a stuff byte into a payload area in a frame into which the client signal is to be mapped, and sends the frame after the insertion control. In addition, the transmission apparatus inserts the client signal or the stuff byte in columns of the frame into the payload area except a leading column.

Description

technical field [0001] The embodiments discussed here relate to a transmission device and a signal mapping method, and more specifically, to a transmission device for transmitting a frame and a signal mapping method for mapping a signal to a frame. Background technique [0002] In an optical network using WDM (Wavelength Division Multiplexing) technology, it is necessary to map various signals and transmit large-capacity signals in order to provide various services. [0003] In order to operate and manage such an optical network, for example, OTN (Optical Transport Network) is standardized by ITU-T (International Telecommunication Union Telecommunication Standardization Sector). G.709 "Interface of Optical Transport Network" recommends a frame signal (hereinafter referred to as "frame") for optical transmission. [0004] Figure 7 The format of the OTN frame is exemplified. The OTN frame 100 includes: an overhead area 101 , a payload area 102 and an FEC (Forward Error Corr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04Q11/00H04J3/16
CPCH04J3/1629H04J3/07
Inventor 片桐徹北岛广之
Owner FUJITSU LTD