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Method and device for transmitting and receiving client signals

A technology of customer signal and transmission channel, applied in the field of communication, can solve problems such as complex processing process, achieve cost saving, simplify signal adaptation process, and avoid delay

Active Publication Date: 2016-01-13
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, when adapting this multi-wavelength parallel interface client signal to the OTN parallel interface, the method of "multiplexing, then distributing, and then multiplexing" is still adopted, and the processing process will be very complicated.

Method used

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  • Method and device for transmitting and receiving client signals
  • Method and device for transmitting and receiving client signals
  • Method and device for transmitting and receiving client signals

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Embodiment Construction

[0073] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0074] OTN frame structure such as figure 1 Shown: The OTN frame is a frame structure of 4×4080 bytes (that is, 4 rows×4080 columns). Corresponding to 2.5G, 10G, 40G, 100G rate level) OH (overhead area), ODUk (OpticalChannelDataUnit, optical channel data unit, k=1, 2, 3, 4 respectively corresponding to 2.5G, 10G, 40G, 100G rate level , k=flex means arbitrary bit rate) OH, OPUk (OpticalChannelPayloadUnit, optical channel payload unit, k=1, 2, 3, 4 respectively correspond to 2.5G, 10G, 40G, 100G rate levels, k=flex means bit rate Any) OH, Payload Area (PayloadArea), FEC area and other parts; the framing area includes FAS (FrameAlignmentSignal, frame alignment signal), in which OPUkOH is mainly used for customer service mapping and adapt...

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Abstract

Embodiments of the present invention provides a method and apparatus for transmitting, receiving customer signals, involving the field of communication technology, said method comprising: mapping customer signals to the channel of parallel transmission frames, the parallel transmission frame comprises at least two channels, adding overhead to the channel of the parallel transmission frame after the mapping, forming a transmission channel of parallel transmission frames, the bit rate of each transmission channel of the parallel transmission frame is fixed; The transmission channel of the parallel transmission frame is modulated to the optical carrier in the same optical fiber, and the modulated optical carrier is transmitted. By defining the parallel transmission frame structure, the customer signal, especially the multi-channel customer signal, is mapped to the transmission channel of the parallel transmission frame, and the transmission channel is modulated to the optical carrier in the same optical fiber, which greatly simplifies the processing complexity of the multi-channel parallel customer signal, circumvents the existing "first multiplexing, then distribution, and then multiplexing" processing process, simplifying the signal adaptation process.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method and device for transmitting and receiving client signals. Background technique [0002] OTN (Optical transport network, optical transport network) is the core technology of the next-generation transport network, including the technical specifications of the electrical layer and the optical layer, with rich OAM (Operation Administration and Maintenance, operation, management and maintenance), and powerful TCM (Tandem Connection Monitoring, serial connection monitoring) Capability and out-of-band FEC (ForwardErrorCorrection, forward error correction) capability can realize flexible scheduling and management of large-capacity services. [0003] The existing OTN system has four fixed line rates OTUk (OpticalChannelTransportUnit, optical channel transmission unit, k=1, 2, 3, 4 respectively corresponding to 2.5G, 10G, 40G, 100G rate levels), the service can only be adap...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04Q11/00H04B10/12
CPCH04Q2213/1301H04J3/1652H04J3/1658H04J2203/0085H04Q2213/13216H04Q11/00H04B10/27H04B10/50H04B10/032H04L1/0042H04Q11/0003H04Q11/0066H04Q2011/0081H04Q2213/13168
Inventor 吴秋游董立民苏伟
Owner HUAWEI TECH CO LTD
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