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Data mapping, multiplexing, demultiplexing and demapping method and device

A demultiplexing and data technology, applied in data mapping, demultiplexing and demapping methods and devices, and multiplexing fields, can solve problems such as mapping and multiplexing

Inactive Publication Date: 2018-08-24
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The demand for ultra-high-speed WDM systems continues to increase based on bandwidth requirements, thereby introducing the demand for Flexible Grid technology. However, many issues such as how to effectively plan and manage spectrum, and compatibility with existing systems, etc. waiting for solution
[0005] For the problem of how to effectively map and reuse data after the flexible grid is introduced in related technologies, no effective solution has been proposed so far

Method used

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  • Data mapping, multiplexing, demultiplexing and demapping method and device
  • Data mapping, multiplexing, demultiplexing and demapping method and device
  • Data mapping, multiplexing, demultiplexing and demapping method and device

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Embodiment 1

[0067] This embodiment provides a method for data mapping and multiplexing of an optical transport network, so as to at least solve the problem of how to effectively perform data mapping and multiplexing after the flexible grid technology is introduced in the above-mentioned related art.

[0068] Figure 9 It is a schematic diagram of the mapping and multiplexing processing flow of ODUCn-OTUCnAG-OCh according to Embodiment 1 of the present invention, such as Figure 9 As shown, the packet service data is mapped to the optical channel data unit (ODUCn, indicating a higher rate than ODUk (k=0.1, 2, 2e, 3, 4), and the ODUCn is mapped into the optical channel transmission unit high-speed management group ( OTU High-speedAdministrative Group, referred to as OTUCnAG); and then map OTUCnAG into the optical channel (OCh); among them, the rate of ODUCn, OTUCnAG and OCh is N times 100 Gbit / s, and the tributary timing size of ODUCn is 100 Gigabit per second, N is a positive integer grea...

Embodiment 2

[0082] Figure 14 It is a schematic diagram of the processing method of data mapping and multiplexing into ODUCm according to Embodiment 2 of the present invention, such as Figure 14As shown, this embodiment provides a general data mapping and multiplexing method. In order to facilitate the description of the problem, the 4*3810 Optical Payload Unit (Optical Payload Unit, referred to as OPU) frame defined by the protocol G.709 is here The structure is called OPUC, and the maximum rate is 100Gbit / s. That is to map a customer service data flow with a rate of m*100G into OPUCm. For example, for a 400GE Ethernet service data flow, the value of m is 4; or for a 1TE Ethernet data flow, the value of m is 10. It should be noted that the ODUCm frame generated in this embodiment can be used as the input of the third embodiment, but it is not the only input of the third embodiment, and the third embodiment only decouples ODUCm and ODUCn. Taking 400GE as an example, an example of mappi...

Embodiment 3

[0136] In the implementation process, the customer service data flow can also be directly mapped into the OPUCm, and the ODUCm can be obtained after adding ODU overhead bytes, without following the method of the second embodiment. That is to say, the process of mapping customer service data flow into OPUCm can be completed by using related technologies.

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Abstract

The invention discloses a data mapping, multiplexing, demultiplexing and demapping method and device, wherein the method includes: sequentially mapping the Ethernet service data flow with a rate of m*100 gigabits per second to m optical In the payload unit subframe (OPUC), m OPUCs are multiplexed into an optical payload unit frame (OPUCm) with a rate of m*100 Gbits per second according to byte interleaving; at the head of OPUCm Adding the optical channel data unit (ODU) overhead, the optical channel data unit frame (ODUCm) with a rate of m*100 gigabits per second is obtained; among them, the frame structure of OPUC is 4 rows and 3810 columns, and the frame structure of OPUCm is 4 rows 3810*m columns, the frame structure of ODUCm is 4 rows and 3824*m columns, m is a positive integer. Through the invention, the utilization efficiency of optical fiber spectrum and the flexibility and compatibility of the system are improved.

Description

technical field [0001] The present invention relates to the communication field, in particular to a data mapping, multiplexing, demultiplexing and demapping method and device. Background technique [0002] The development trend of optical transmission technology presents a higher single-channel rate (for example, single-channel 400G / 1T transmission), higher spectral efficiency and high-order modulation format. Therefore, continuing to increase the rate is still the clearest and most important for the development of optical transmission. direction. High-speed transmission faces many limitations, mainly in two aspects: On the one hand, optical transmission technology is developing towards high-spectrum-efficiency aggregation transmission and high-speed service interface transmission. If the spectral efficiency cannot continue to improve, low-speed convergence to high-speed retransmission is meaningless. However, since the client side may still have a high-speed Ethernet inter...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04J14/02
CPCH04J14/0227H04J3/1658H04J14/0224H04J14/0256H04L5/0046H04L5/0053H04Q11/0066H04Q2011/0086
Inventor 付锡华张新灵
Owner ZTE CORP