WO2012100526A1 - Procédé de mise en correspondance de modèle de données de signal, système et trameur associés - Google Patents

Procédé de mise en correspondance de modèle de données de signal, système et trameur associés Download PDF

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Publication number
WO2012100526A1
WO2012100526A1 PCT/CN2011/078652 CN2011078652W WO2012100526A1 WO 2012100526 A1 WO2012100526 A1 WO 2012100526A1 CN 2011078652 W CN2011078652 W CN 2011078652W WO 2012100526 A1 WO2012100526 A1 WO 2012100526A1
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WO
WIPO (PCT)
Prior art keywords
channel
data
frame header
framer
signal
Prior art date
Application number
PCT/CN2011/078652
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English (en)
Chinese (zh)
Inventor
康凯
沈百林
Original Assignee
中兴通讯股份有限公司
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Publication of WO2012100526A1 publication Critical patent/WO2012100526A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13216—Code signals, frame structure

Definitions

  • the present invention relates to the field of optical network technologies, and in particular, to a signal data pattern matching method, system and framer suitable for a 100G optical transmission system. Background technique
  • the ITU-T International Telecommunication Union-TELECOMMU ICATION
  • OTU4 Optical Channel Transport Unit
  • the optical signal rate of the OTU4 on the line side is about 112Gb/s. Since the electrical device cannot handle such a high rate, it is generally required to use a combination of technologies such as multi-wavelength, multi-level modulation, multi-polarization multiplexing, etc.
  • the code rate of the electrical signal to the power device is reduced to 1/4 of the line side optical signal rate.
  • the optical module on the line side of the optical transmission network generally converts the rate by non-coherent modulation.
  • the 100 GHz optical signal transmitted on the line side includes two subcarriers separated by 50 GHz, and the single wave rate of the subcarrier is 56 Gb. /s, differential QuadriPhase-Shift Keying (DQPSK) modulation is used for signal output with a code rate of 28Gb/s.
  • DQPSK differential QuadriPhase-Shift Keying
  • the phase of the electric signal may be +/-45°, +/-135. And combinations thereof, therefore, a pattern search of the electrical signals output to the framer, including a combination of I/Q switching and I/Q inversion, is required.
  • the phase removal is the same or the phase difference is 180.
  • Such as the combination of the unavailable patterns and then select the signal data of the phase difference of 90 degrees from the combination of several I and Q phase differences to realize the I and Q data pattern matching, so that the framer can output the data of the correct data mode.
  • a mode search is performed on an electrical signal before outputting to a framer, and data matching is implemented through a mode search.
  • This method of matching data patterns in an optical module requires multiple attempts to obtain correctness.
  • the data mode to achieve the frame after the correct data mode is acquired, it needs to be transmitted to the framer, and waits for the framer to return the confirmation message confirming the correct data mode, which increases the peripheral feedback bus circuit design and leads to the data.
  • the embodiment of the invention provides a signal data pattern matching method, a system and a framer, which are used to solve the problem that the signal data pattern matching needs to increase the peripheral circuit in the prior art, resulting in a slow matching speed.
  • a signal data pattern matching method includes:
  • Performing frame header detection on the signal of each channel of the input framer specifically: outputting signal data of the channel that detects the preset forward frame header;
  • the reverse frame header is forward
  • the frame header is obtained by inverting the operation
  • the data output from each channel is sorted to obtain the output data of the framer.
  • the signal data of the channel that detects the reverse frame header is inverted and output, and specifically includes:
  • the binary number 1 in the signal data of the channel in which the reverse frame header is detected is changed to 0 and the binary number 0 is changed to 1, and the changed data is output.
  • the data outputted by each channel is sorted to obtain output data of the framer, and specifically includes: Obtaining a logical channel label of data outputted by each channel, and sorting data outputted by each channel according to the logical channel label to obtain output data of the framer.
  • the data output by each channel is sorted in ascending order of logical channel labels.
  • the method further includes: outputting an error report signal to a channel that does not detect a forward frame header and does not detect a reverse frame header.
  • the method further includes:
  • a framer comprising:
  • a frame header detecting unit configured to sequentially perform frame header detection on a signal of each channel of the input framer, specifically: outputting signal data of a channel that detects a preset forward frame header; Performing reverse frame header detection on the signal of the channel of the forward frame header, and performing inverse operation on the signal data of the channel detecting the reverse frame header; and performing the inverse operation on the reverse frame header for the forward frame header owned;
  • Matching output unit used to sort the data output by each channel to obtain the output data of the framer.
  • the frame header detecting unit is further configured to: output an error report signal to a channel that does not detect a forward frame header and does not detect a reverse frame header.
  • the matching output unit is further configured to: determine whether there is a channel for outputting the error report signal, and when not present, perform an operation of sorting the data output by each channel to obtain output data of the framer.
  • An optical signal data pattern matching system comprising: an optical module and the framing device; the optical module, configured to multiplex and convert the received optical signal on the line side, Go to a set number of electrical signals and provide them to the framer;
  • the framer is configured to split the electrical signal provided by the optical module to obtain a signal input to each channel of the framer.
  • the signal data pattern matching method, system and framer provided by the embodiment of the invention sequentially perform frame header detection on the signal of each channel of the input framer, and the data output of the channel of the preset forward frame header is detected. Performing reverse frame header detection on the data of the channel in which the forward frame header is not detected, and performing inverse operation on the data of the channel in which the reverse frame header is detected; and then sorting the data outputted by each channel Get the output data of the framer. Data pattern matching of the signal is achieved in the framer, since the phase of the signal input to the framer generally satisfies +/-45. , +/-135.
  • the mode search can be realized quickly and easily, and the data pattern matching is completed.
  • the method is simple and convenient, and reduces unnecessary feedback circuit.
  • the design saves the circuit cost investment; and the signal feedback confirmation process is not needed, which improves the speed and efficiency of data pattern matching.
  • FIG. 1 is a schematic structural diagram of a signal data pattern matching system according to an embodiment of the present invention
  • FIG. 2 is a flowchart of a signal data pattern matching method according to an embodiment of the present invention. detailed description
  • the present invention will be further described in detail below with reference to the accompanying drawings and embodiments in order to make the present invention. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
  • a pattern search is performed on the signal data before the input of the framer, and the matching speed is slow, the efficiency is low, and the support of the peripheral feedback circuit is required in the process of implementing the data pattern matching.
  • the signal data pattern matching method implements matching of data patterns in the framer, and is specifically implemented by performing frame header detection on a signal of each channel of the input framer, and the method adopts a signal data pattern matching system as shown in FIG. Implementation, the system includes an optical module and a framer.
  • the optical module multiplexes the received optical signal on the line side and converts it into a set number of electrical signals for supply to the framer.
  • the framer splits the electrical signal provided by the optical module to obtain a signal input to each channel of the framer.
  • the above optical module includes a receiver and a splitter.
  • the receiver includes two DQPSK receivers, such as the receiver DQPSK(X) and the receiver DQPSK(Y), each of which processes one subcarrier transmitted on the line side and delays the subcarrier. After interference (DLI) adjustment and photoelectric conversion, two electrical signals of I and Q are obtained. It is then demultiplexed (DEMUX) by a splitter to obtain a set number of electrical signals for the framer.
  • the transmission rate of the line side optical signal is 112 Gb/s
  • the optical signal includes two subcarriers
  • the single wave rate is 56 Gb/s.
  • the four actual code rates are 28 Gb/s. electric signal.
  • the four-way electrical signal is demultiplexed by the splitter to realize 4:10 conversion, and 10 electrical signals are obtained and provided to the framer for OTU4 framing.
  • Delay line interference adjustment does not necessarily lock the I and Q signals to +/-45. , but it is possible to lock at +/-45° and +/-135. And its combination.
  • the electrical signals provided to the framer by the above-mentioned splitter require data pattern matching. Unlike the prior art, the data pattern matching in the present invention is performed in the framer.
  • the framer shown in FIG. 1 above includes: a frame header detecting unit and a matching output unit.
  • the frame header detecting unit is configured to perform frame header detection on the signal of each channel of the input framer, and specifically includes: outputting data of a channel that detects a preset forward frame header; The data of the channel of the frame header is subjected to reverse frame header detection, and the data of the channel in which the reverse frame header is detected is inverted and output; wherein the reverse frame header is obtained by inverting the forward frame header.
  • the frame header detecting unit is further configured to output an error report signal to a channel that does not detect a forward frame header or a reverse frame header.
  • Matching output unit used to sort the data output by each channel to obtain the output data of the framer.
  • the matching output unit is further configured to determine whether there is a channel for outputting an error report signal, and when not present, perform the step of sorting the data output by each channel to obtain output data of the framer.
  • the signal data pattern matching is implemented by the framer, and the frame header detection is performed on the signal data of each channel input to the framer, and the data of the channel of the preset forward frame header is detected.
  • the method flow is shown in Figure 2, and the execution steps are as follows:
  • S11 Start the process of performing frame header detection on the signal of each channel of the input framer.
  • the splitter outputs 10 electrical signals in the optical module, and after being supplied to the framer, the framer splits the signal into 20 channels to obtain an input framer for each channel (logical channel). ) signal of.
  • the frame header detection is performed for each channel signal, including forward frame header detection and reverse frame header detection, and the signal data of 20 logical channels are respectively framed.
  • S12 Perform positive frame header detection on the signal.
  • Forward frame header detection is performed on the signal of each channel in the framer.
  • step S14 If yes, go to step S14; otherwise, go to step S15.
  • step S14 When the forward frame header 0xF6F6F6282828 is found in the data signal, step S14 is performed, otherwise step S15 is performed.
  • S14 The signal data of the channel in which the forward frame header is detected is output.
  • the signal data of the path is output, and the corresponding frame header signal is output.
  • the reverse frame header detection is performed on the signal of the path in which the forward frame header is not detected. Specifically, the frame header detection is performed by using the reverse frame header obtained by performing the inverse operation on the forward frame header.
  • the reverse frame header is inverted, and the reverse frame header 0x090909D7D7D7 is obtained.
  • the reverse frame header 0x090909D7D7D7 is used to detect the header of the signal, and whether the signal contains the reverse To the frame header.
  • step S17 If yes, go to step S17; otherwise, go to step S18.
  • step S17 When the reverse frame header 0x090909D7D7D7 is found in the data signal, step S17 is performed, otherwise step S18 is performed.
  • S17 The signal data of the channel in which the reverse frame header is detected is inverted and output.
  • the signal data of the path is inverted and output, and the corresponding frame header signal is output.
  • the signal data of the channel in which the reverse frame header is detected is inverted and output, and specifically includes: changing the binary number 1 in the signal data of the channel in which the reverse frame header is detected to 0 and changing the binary number 0 to 1 , the changed data is output, and the frame header of the changed data is output.
  • An error report signal is output for a channel that does not detect a forward frame header and does not detect a reverse frame header. For example: When the reverse frame header is not found in the channel where the forward frame header is not found, that is, when the frame header is not found, the output optical transmission path - Out of Frame (OTL) is output. OOF) signal.
  • OTL Out of Frame
  • S19 Sort the data outputted by each channel to obtain the output data of the framer.
  • the data outputted by each channel is sorted to obtain the output data of the framer, and specifically includes: acquiring a logical channel label (LLM, Logical Line Marker) of the data outputted by each channel, and sorting the data output by each channel according to the logical channel label, Get the output data of the framer.
  • LLM Logical Line Marker
  • the data output by each channel is sorted in the order of logical channel labels from small to large.
  • the 20 logical channels are reordered according to the smallest to largest LLM of each logical channel extracted, and finally the correct data mode of the framer output is obtained.
  • the frame header of the data of the obtained electrical signal generally satisfies one of the forward frame header and the reverse frame header, and therefore, through the front and back frame header detection, The framer always finds the correct data pattern.
  • the method may further include:
  • the matching method is applicable to the 100G system, and can complete the data pattern matching of the output signals of the two DQPSK receivers in the 100G system.
  • the signal data pattern matching method, system and framer provided by the embodiment of the invention sequentially perform frame header detection on the signal of each channel of the input framer, and the data output of the channel of the preset forward frame header is detected. Performing reverse frame header detection on the data of the channel in which the forward frame header is not detected, and inverting and outputting the data of the channel detecting the reverse frame header; and then sorting the data outputted by each channel to obtain The output data of the framer.
  • the pattern search can be conveniently and quickly implemented in the framer to complete the data pattern matching, and the method is completed.
  • the implementation is simple and convenient, reduces the unnecessary feedback circuit design, does not need to feed back the signal to the line side optical module, saves the circuit cost investment; and does not need the signal feedback confirmation process, which improves the speed and efficiency of data pattern matching.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Time-Division Multiplex Systems (AREA)

Abstract

La présente invention se rapporte à un procédé de mise en correspondance de modèle de données de signal. L'invention se rapporte d'autre part à un système et à un trameur associés. Le procédé selon l'invention consiste : à réaliser la détection d'un en-tête sur un signal de chaque voie qui est entrée dans un trameur, étape du procédé consistant, de façon plus spécifique : à délivrer en sortie des données de signal d'une voie sur laquelle un en-tête de transfert prédéfini a été détecté ; à réaliser la détection d'un en-tête inverse sur un signal d'une voie sur laquelle l'en-tête de transfert n'est pas détecté, et à réaliser une opération d'inversion sur des données de signal d'une voie sur laquelle un en-tête inverse a été détecté, et à délivrer en sortie les données de signal, l'en-tête inverse étant obtenu par une opération d'inversion de l'en-tête de transfert ; et à trier les données délivrées en sortie par chaque voie, dans le but d'obtenir des données de sortie du trameur. Le procédé selon l'invention peut être mis en œuvre dans le trameur de façon simple et conviviale, et il ne nécessite aucune rétroaction de signal. De cette manière, le coût du circuit peut être réduit et la vitesse de mise en correspondance est améliorée.
PCT/CN2011/078652 2011-01-25 2011-08-19 Procédé de mise en correspondance de modèle de données de signal, système et trameur associés WO2012100526A1 (fr)

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CN201110026794.5A CN102088645B (zh) 2011-01-25 2011-01-25 信号数据模式匹配方法、***及成帧器

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CN102088645B (zh) * 2011-01-25 2014-07-16 中兴通讯股份有限公司 信号数据模式匹配方法、***及成帧器

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090022497A1 (en) * 2007-07-16 2009-01-22 Ciena Corporation High-speed optical transceiver for infiniband and ethernet
CN101867850A (zh) * 2010-06-03 2010-10-20 中兴通讯股份有限公司 实现otn中交叉颗粒度自适应的方法及装置
CN101990140A (zh) * 2010-11-17 2011-03-23 中兴通讯股份有限公司 数据流定帧方法及装置
CN102088645A (zh) * 2011-01-25 2011-06-08 中兴通讯股份有限公司 信号数据模式匹配方法、***及成帧器

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101141236B (zh) * 2007-03-20 2010-08-04 中兴通讯股份有限公司 用于同步传输***的定帧方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090022497A1 (en) * 2007-07-16 2009-01-22 Ciena Corporation High-speed optical transceiver for infiniband and ethernet
CN101867850A (zh) * 2010-06-03 2010-10-20 中兴通讯股份有限公司 实现otn中交叉颗粒度自适应的方法及装置
CN101990140A (zh) * 2010-11-17 2011-03-23 中兴通讯股份有限公司 数据流定帧方法及装置
CN102088645A (zh) * 2011-01-25 2011-06-08 中兴通讯股份有限公司 信号数据模式匹配方法、***及成帧器

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