CN101594206A - The method for synchronous of forward error correction encoding/decoding mode and device - Google Patents
The method for synchronous of forward error correction encoding/decoding mode and device Download PDFInfo
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- CN101594206A CN101594206A CNA200910150256XA CN200910150256A CN101594206A CN 101594206 A CN101594206 A CN 101594206A CN A200910150256X A CNA200910150256X A CN A200910150256XA CN 200910150256 A CN200910150256 A CN 200910150256A CN 101594206 A CN101594206 A CN 101594206A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0075—Transmission of coding parameters to receiver
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
- H03M13/63—Joint error correction and other techniques
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
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Abstract
The invention discloses a kind of method for synchronous and device of forward error correction encoding/decoding mode, this method comprises: receiving terminal receives the indication information from transmitting terminal, and obtain the forward error correction coding pattern of transmitting terminal according to indication information, wherein, indication information carries the forward error correction coding pattern of transmitting terminal; Receiving terminal is determined corresponding decoding schema according to the forward error correction coding pattern of transmitting terminal.Realize the synchronous automatically of receiving terminal decoding FEC pattern and transmitting terminal forward error correction coding pattern by the present invention, and reduced the probability of service disconnection.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of method for synchronous and device of forward error correction encoding/decoding mode.
Background technology
Optical transport network (Optical Transport Network, abbreviate OTN as) be based on wavelength-division multiplex technique, at the transmission net of photosphere organization network, be a new generation's " digital transmission system " and " optical transport hierarchy " by the suggestion institute standard that G.872, G.709, G.798 waits a series of ITU Telecommunication Standardization Sectors (InternationalTelecommunications Union-Telecommunications standardizationsector abbreviates ITU-T as).Have the advantages that multi-wavelength transmits (single wavelength is transmitted as its special case), bulky grain scheduling, combine SDH (Synchronous Digital Hierarchy) (Synchronous Digital Hierarchy, abbreviate SDH and wavelength division multiplexing (Wavelength Division Multiplexing as, abbreviate WDM as) advantage, be follow-on Backbone Transport Network.
At present, Fibre Optical Communication Technology just develops towards ultrahigh speed, jumbo direction, for the long system of distance of two-forty, except adopting technology such as coded modulation, light amplification, dispersion compensation, dynamic equalization on the light territory, to improve Optical Signal To Noise Ratio (Optical Singal Noise Patio, abbreviate OSNR as) outside, can also on electric territory, carry out code correction.At present, relatively Chang Yong way is to adopt forward error correction (Forward error correction abbreviates FEC as), can still obtain preferable error performance objective under the lower situation of receiving terminal Optical Signal To Noise Ratio OSNR.G.709 at complete standardized optical channel transmission unit (Optical Transport Unit, abbreviate OTUk as, the different speed of k sign wherein) used Reed-SolomonRS (255 in, 239) FEC of (abbreviation RS-FEC) algorithm, and in each OTUk frame, use the space of 4 * 256 bytes to deposit the FEC computing information.RS-FEC defines in G.975, and it can provide the clean coding gain above the OSNR of 6dB on the level of the error rate for 10-15.Simultaneously, G.709 in the optical transport unit (OTUk) of function standardizing, also support privately owned FEC coding.Usually the RS-FEC of privately owned FEC encoding ratio standard coding has stronger error correcting capability, and privately owned FEC coding might use more overhead byte to deposit them, thereby line speed is increased.Different privately owned FEC coded systems may have different titles, and crying of having strengthens FEC (being called for short E-FEC), and what have cries super FEC (also having defined a kind of super FEC G.975.1).The application of privately owned FEC, the system transfer capability of making have had further raising.For the purpose of compatibility, the G.709OTN signal processing chip of each manufacturer production is generally all supported the RS-FEC and the privately owned FEC coded system of standard simultaneously.Generally all adopt the RS-FEC coded system of standard when different manufacturers OTN signal processing chip is interconnected, when the same OTN of producer signal processing chip is adopted in the sending and receiving end, then can require be provided with corresponding FEC coding mode according to the tolerance limit of different system Optical Signal To Noise Ratio OSNR.But; no matter whether the sending and receiving end adopts the OTN signal processing chip of same producer; all require transmitting terminal FEC coding mode and receiving terminal fec decoder pattern to be consistent; otherwise will cause service disconnection because of illegal FEC error correction; at present in actual applications; transmitting terminal FEC coding mode and receiving terminal fec decoder pattern generally all are to be provided with respectively, occur needing the synchronous mechanism of a kind of sending and receiving end FEC encoding/decoding mode owing to reasons such as misoperation cause service disconnection through regular meeting.
Might occur the different of encoding/decoding mode at receiving terminal in the correlation technique with transmitting terminal and cause the problem of service disconnection, not propose effective solution at present as yet.
Summary of the invention
Might occur the different of encoding/decoding mode at receiving terminal in the correlation technique with transmitting terminal and cause the problem of service disconnection and propose the present invention, for this reason, main purpose of the present invention is to provide a kind of synchronization scenario of improved forward error correction FEC encoding/decoding mode, one of to address the above problem at least.
To achieve these goals, according to an aspect of the present invention, provide a kind of method for synchronous of forward error correction encoding/decoding mode.
Method for synchronous according to forward error correction encoding/decoding mode of the present invention comprises: receiving terminal receives the indication information from transmitting terminal, and obtain the forward error correction coding pattern of transmitting terminal according to indication information, wherein, indication information carries the forward error correction coding pattern of transmitting terminal; Receiving terminal is determined corresponding decoding schema according to the forward error correction coding pattern of transmitting terminal.
Preferably, determine that corresponding decoding schema comprises: receiving terminal judges whether to support the forward error correction coding pattern of transmitting terminal; If judged result is for being, then according to the definite corresponding decoding schema of the forward error correction coding pattern of transmitting terminal; If judged result is that then the receiving terminal transmitting and receiving terminal is not supported the alarm of the forward error correction coding pattern of transmitting terminal.
Preferably, after receiving terminal sent alarm, said method also comprised: transmitting terminal is changed the forward error correction coding pattern according to alarm, and resends indication information, wherein, carries the forward error correction coding pattern after the replacing in the indication information that resends.
Preferably, the receiving terminal reception specifically comprises from the indication information of transmitting terminal:
Receiving terminal is by the indication information of optical transport network expense reserve bytes reception from transmitting terminal.
Preferably, before the indication information of receiving terminal reception from transmitting terminal, said method also comprises: all distribute a unique type identification for each forward error correction coding pattern, carry the pairing type identification of forward error correction coding pattern of transmitting terminal in the indication information.
Preferably, indication information also carries check digit, and wherein, check digit is used for after receiving terminal is obtaining the forward error correction coding pattern of transmitting terminal the forward error correction coding pattern of transmitting terminal being carried out verification.
To achieve these goals, according to a further aspect in the invention, provide a kind of synchronizer of forward error correction encoding/decoding mode.
Synchronizer according to forward error correction encoding/decoding mode of the present invention comprises: receiver module, be used to receive indication information from transmitting terminal, and wherein, indication information carries the forward error correction coding pattern of transmitting terminal; Acquisition module is used for obtaining according to indication information the forward error correction coding pattern of transmitting terminal; Determination module is used for determining corresponding decoding schema according to the forward error correction coding pattern of transmitting terminal.
Preferably, said apparatus also comprises: judge module is used to judge whether to support the forward error correction coding pattern of transmitting terminal; Alarm module is used for the alarm that transmitting and receiving terminal is not supported the forward error correction coding pattern of transmitting terminal.
Preferably, said apparatus also comprises: the alarm receiver module is used for the alarm that the receiving alarm module sends; Change module, be used for changing the forward error correction coding pattern according to alarm; Sending module is used to send indication information, wherein, and the forward error correction coding pattern of transmitting terminal in the indication information.
Preferably, said apparatus also comprises: the verification module, and be used to indication information to add check digit, wherein, check digit is used for after receiving terminal is obtaining the forward error correction coding pattern of transmitting terminal the forward error correction coding pattern of transmitting terminal being carried out verification.
By the present invention, adopt transmitting terminal to send the FEC coding mode, receiving terminal is determined the fec decoder pattern according to the FEC coding mode of transmitting terminal, solved that receiving terminal the different of encoding/decoding mode might occur with transmitting terminal and the problem that causes service disconnection, and then reached receiving terminal fec decoder pattern and the autosynchronous effect of transmitting terminal FEC coding mode, lowered the probability of service disconnection.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart according to the method for synchronous of the forward error correction FEC encoding/decoding mode of the embodiment of the invention;
Fig. 2 is the schematic diagram that OTN expense reserve bytes transmits the FEC coding mode that passes through according to the embodiment of the invention;
Fig. 3 is the flow chart of handling according to the pure software method for synchronous of the OTN expense reserve bytes mode receiving terminal FEC coding mode of the embodiment of the invention;
Fig. 4 is the structured flowchart according to the device of the OTN expense reserve bytes mode receiving terminal FEC coding mode software and hardware combining method for synchronous of the embodiment of the invention;
Fig. 5 is a structured flowchart of realizing the device that the FEC coding mode is synchronous according to the pure ASIC logic chip of the employing of the embodiment of the invention;
Fig. 6 is the schematic diagram that supervisory control system transmits the FEC coding mode that passes through according to the embodiment of the invention;
Fig. 7 is the structured flowchart according to the synchronizer of the forward error correction FEC encoding/decoding mode of the embodiment of the invention;
Fig. 8 is the concrete structured flowchart of synchronizer according to the forward error correction FEC encoding/decoding mode of the embodiment of the invention.
Embodiment
Functional overview
Consider that receiving terminal in the correlation technique the different of encoding/decoding mode might occur with transmitting terminal and causes the problem of service disconnection, the embodiment of the invention provide a kind of in optical transport network receiving terminal fec decoder pattern and the autosynchronous scheme of transmitting terminal FEC coding mode, the treatment principle of this scheme is: receiving terminal receives the indication information from transmitting terminal, and obtain the FEC coding mode of transmitting terminal according to indication information, wherein, indication information carries the FEC coding mode of transmitting terminal; Receiving terminal is determined corresponding decoding schema according to the FEC coding mode of transmitting terminal.
Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
In following examples, can in computer system, carry out in the step shown in the flow chart of accompanying drawing such as a set of computer-executable instructions, and, though there is shown logical order in flow process, but in some cases, can carry out step shown or that describe with the order that is different from herein.
Method embodiment
According to embodiments of the invention, a kind of method for synchronous of forward error correction FEC encoding/decoding mode is provided, Fig. 1 is the flow chart according to the method for synchronous of the forward error correction FEC encoding/decoding mode of the embodiment of the invention, and as shown in Figure 1, this method comprises that following step S102 is to step S106:
Step S102, receiving terminal receives the indication information from transmitting terminal, and wherein, indication information carries the FEC coding mode of transmitting terminal.Need to prove that the FEC coding mode of transmitting terminal can be provided with by hand, also can obtain automatically.
Step S104, receiving terminal obtain the FEC coding mode of transmitting terminal according to indication information.
Step S106, receiving terminal is determined corresponding decoding schema according to the FEC coding mode of transmitting terminal.
Comprise the steps that at step S106 S106a is to step S106c:
Step S106a, receiving terminal judge whether to support the FEC coding mode of transmitting terminal, are under the situation that is in judged result, execution in step S106b; In judged result is under the situation not, execution in step S106c.
Step S106b determines corresponding decoding schema according to the FEC coding mode of transmitting terminal.
Step S106c, receiving terminal transmitting and receiving terminal do not support the alarm of the FEC coding mode of transmitting terminal.
After step S106c, transmitting terminal is changed the FEC coding mode according to the alarm that receives, and resends indication information, wherein, carries the FEC coding mode after the replacing in the indication information that resends.
Preferably, receiving terminal is by the indication information of optical transport network expense reserve bytes reception from transmitting terminal.
Preferably, for each FEC coding mode all distributes a unique type identification, carry the pairing type identification of FEC coding mode of transmitting terminal in the indication information.
Preferably, indication information also carries check digit, and wherein, check digit is used for after receiving terminal is obtaining the FEC coding mode of transmitting terminal, and the FEC coding mode of transmitting terminal is carried out verification.
Be described in detail below in conjunction with the implementation procedure of example the embodiment of the invention.
Fig. 2 is the schematic diagram that OTN expense reserve bytes transmits the FEC coding mode that passes through according to the embodiment of the invention, as shown in Figure 2, first processing module 10 is transmitting terminal OTN processing units, second processing module 20 is receiving terminal OTN processing units, monitoring module 30 is net element business monitoring units, this monitoring module 30 is added up all known FEC coding modes at present in advance, and is that each FEC coding mode distributes a unique encoding type i D, forms a type of coding ID set.OTN processing units all in the whole system are all discerned the FEC coding mode according to type of coding ID.First processing module 10 is selected a kind of FEC coding mode under the control of monitoring module 30, and with FEC type of coding sign (Identification, abbreviate ID as) insert in the OTN expense reserve bytes, then, send the OTN signal to second processing module 20, second processing module 20 receives after the OTN signal, before carrying out the FEC error correction, from the expense reserve bytes, take out FEC type of coding ID earlier, if second processing module 20 is supported this FEC type of coding, then carry out the FEC error correction according to this FEC type of coding, otherwise, report the FEC type of coding not support alarm to monitoring module 30, if monitoring module 30 receives the FEC type of coding that second processing module 20 reports and does not support alarm, then can control revise first processing module 10 the FEC type of coding till the FEC type of coding that second processing module 20 reports does not support that alarm disappears.
Between first processing module 10 and second processing module 20 through long Distance Transmission, under the very low situation of receiving terminal OTN light signal OSNR, do not carry out the FEC error correction this moment in second processing module 20, may be because error code causes collecting wrong FEC type of coding ID, for avoiding this situation, can be that FEC type of coding ID increases check digit in first processing module 10, in second processing module 20, adopt multiframe relatively to wait verification mode in addition, guarantee that receiving terminal can accurately obtain transmitting terminal FEC type of coding.
The FEC Synchronous Processing mode of second processing module 20 has multiple, following example 1 to 3 pairs of various processing modes of example to have been described in detail among Fig. 2.
Example one
This example is to adopt pure software processes FEC encoding and decoding synchronous, and Fig. 3 is the flow chart of handling according to the pure software method for synchronous of the OTN expense reserve bytes mode receiving terminal FEC coding mode of the embodiment of the invention, and as shown in Figure 3, this flow process comprises following step:
Be step S301, FEC not correctable error out-of-limit? if judged result is for being, execution in step S302 then.Need to prove that FEC takes place that correctable error is not out-of-limit please situation to have two kinds, first kind is because the inequality of FEC encoding/decoding mode causes, and second kind is owing to mistake occurs cause in the process of transmission.Step S302 is to step S305, be to be used for judging whether to be that correctable error is not out-of-limit owing to FEC coding is changed the FEC that causes, step S306 and step S307 are that correctable error is not out-of-limit is not owing to the processing under the different situations about causing of encoding/decoding mode at FEC.
Step S302, control OTN signal processing chip is not carried out the FEC error correction.
Step S303 reads FEC coding ID from the expense reserve bytes.
Step S304 judges whether second processing module 20 supports this FEC coding ID, if judged result is for being, execution in step S305 then if judged result, waits for then that first processing module 10 sends new FEC and encodes behind the ID for not, re-executes step S302.
Step S305 judges whether FEC coding ID changes, if FEC coding ID does not change, and execution in step S306 then, if FEC coding ID changes, execution in step S308 then.
Step S306 carries out the FEC error correction according to original FEC coding mode.
Step S307 reports not correctable error Threshold Crossing Alert of FEC.
Step S308 carries out the FEC error correction according to new FEC coding mode.
Processing by above-mentioned software approach does not need existing OTN reception processing unit is done any change, realizes the synchronous of sending and receiving end FEC coding mode by software approach fully.
Example two
Fig. 4 is the structured flowchart according to the device of the OTN expense reserve bytes mode receiving terminal FEC coding mode software and hardware combining method for synchronous of the embodiment of the invention, as shown in Figure 4, receiving processing module 40 is that existing OTN receives processing unit, extraction module 50 is FEC type of coding ID extraction units, control module 60 is control units, light path OTN signal is through after the opto-electronic conversion, output two-way in parallel, one tunnel input receiving processing module 40, one tunnel input extraction module 50, the signal of input extraction module 50 is through after the descrambling, do not carry out the FEC error correction, from the expense reserve bytes, take out FEC type of coding ID but under the control of control module 60, directly press ranks information, the FEC type of coding ID control receiving processing module 40 that control module 60 bases are obtained is carried out corresponding fec decoder error correction, and realization is synchronous with transmitting terminal FEC coding mode.
Example three
Fig. 5 is a structured flowchart of realizing the device that the FEC coding mode is synchronous according to the pure ASIC logic chip of the employing of the embodiment of the invention, as shown in Figure 5, first extraction module 100 is frame extraction modules, processing module 200 is frame processing modules, first extraction module 100 comprises first processing unit 70 again, second processing unit 80,90 3 processing units of the 3rd processing unit, wherein, first processing unit 70 is realized scramble process, second processing unit 80 extracts FEC coding mode ID from current OTN frame reserve bytes, second processing unit 80 is controlled the 3rd processing Unit 90 according to the FEC coding mode ID that extracts next OTN frame is decoded and error correction, and realization is synchronous with transmitting terminal FEC coding mode.
Example four
Fig. 6 is the schematic diagram that supervisory control system transmits the FEC coding mode that passes through according to the embodiment of the invention, as shown in Figure 4, sending processing module 110 is transmitting terminal OTN processing units, receiving processing module 120 is receiving terminal OTN processing units, sending monitoring module 130 is transmitting terminal monitoring processing units, receiving monitoring module 140 is receiving terminal monitoring processing units, sending mixer 150 is transmitting terminal OTN signal and pilot signal mixer, the 160th, receiving terminal OTN signal and pilot signal splitter, the 170th, transmitting terminal main control unit, the 180th, receiving terminal main control unit.Under 170 control, transmitting terminal is exported the FEC coded system of the 110 OTN signal correspondences that send by 130 pilot signals that produce, pilot signal transmits with the road by 150 realizations and OTN signal, 160 decompose OTN signal and pilot signal and come, 180 obtain the FEC coding mode that receives OTN signal correspondence by 140, are decoded accordingly and correction process according to the FEC coding mode of transmitting terminal by 180 controls 120 then.
Device embodiment
According to embodiments of the invention, a kind of synchronizer of forward error correction FEC encoding/decoding mode is provided, Fig. 7 is the structured flowchart according to the synchronizer of the forward error correction FEC encoding/decoding mode of the embodiment of the invention, as shown in Figure 7, this device comprises: receiver module 72, acquisition module 74, determination module 76 are described in detail this structure below.
Receiver module 72 is used to receive the indication information from transmitting terminal, and wherein, described indication information carries the FEC coding mode of described transmitting terminal; Acquisition module 74 is connected to the FEC coding mode that receiver module 72 is used for obtaining according to described indication information described transmitting terminal; Determination module 76 is connected to acquisition module 74 and is used for determining corresponding decoding schema according to the FEC coding mode of described transmitting terminal.
Fig. 8 is the concrete structured flowchart of synchronizer according to the forward error correction FEC encoding/decoding mode of the embodiment of the invention, as shown in Figure 8, said apparatus also comprises: verification module 81, judge module 82, alarm module 84, alarm receiver module 85, replacing module 86, sending module 88.Below said structure is described in detail.
Judge module 82 is connected to acquisition module 74 and determination module 76, is used to judge whether to support the FEC coding mode of described transmitting terminal; Alarm module 84 is connected to described judge module 82, and the judged result that is used at described judge module 82 is to send the alarm that described receiving terminal is not supported the FEC coding mode of described transmitting terminal under the unsupported situation.Verification module 81 is connected to acquisition module 74, is used to described indication information to add check digit, and wherein, described check digit is used for after described receiving terminal is obtaining the FEC coding mode of described transmitting terminal, and the FEC coding mode of described transmitting terminal is carried out verification.
Need to prove that verification module 81, receiver module 72, acquisition module 74, determination module 76, judge module 82, alarm module 84 are positioned at receiving terminal; Alarm receiver module 85, replacing module 86, sending module 88 are positioned at transmitting terminal.
Alarm receiver module 85 is connected to alarm module 84, is used to receive the described alarm that described alarm module sends; Change module 86 and be connected to alarm receiver module 85, be used for changing the FEC coding mode according to described alarm; Sending module 88 is connected to changes module 86, is used to send described indication information, wherein, and the FEC coding mode of transmitting terminal described in the described indication information.
Preferably, this device can also comprise that a type identification is provided with module, is used to each forward error correction coding pattern all to distribute a unique type identification.Indicate the employed FEC coding mode of transmitting terminal by the pairing type identification of forward error correction coding pattern that carries transmitting terminal in the indication information in the foregoing description.
In sum, by the above embodiment of the present invention, realized receiving terminal fec decoder pattern and transmitting terminal FEC coding mode in the optical transport network automatically synchronously, thereby reduced the probability of service disconnection.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and carry out by calculation element, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the method for synchronous of a forward error correction encoding/decoding mode is characterized in that, comprising:
Receiving terminal receives the indication information from transmitting terminal, and obtains the forward error correction coding pattern of described transmitting terminal according to described indication information, and wherein, described indication information carries the forward error correction coding pattern of described transmitting terminal;
Described receiving terminal is determined corresponding decoding schema according to the forward error correction coding pattern of described transmitting terminal.
2. method according to claim 1 is characterized in that, determines that corresponding decoding schema comprises:
Described receiving terminal judges whether to support the forward error correction coding pattern of described transmitting terminal;
If judged result is for being, then according to the definite corresponding decoding schema of the forward error correction coding pattern of described transmitting terminal;
If judged result is that then described receiving terminal does not send the alarm that described receiving terminal is not supported the forward error correction coding pattern of described transmitting terminal.
3. method according to claim 2 is characterized in that, after described receiving terminal sent described alarm, described method also comprised:
Described transmitting terminal is changed the forward error correction coding pattern according to described alarm, and resends indication information, wherein, carries the forward error correction coding pattern after the replacing in the indication information that resends.
4. according to each described method in the claim 1 to 3, it is characterized in that the described indication information that described receiving terminal receives from described transmitting terminal specifically comprises:
Described receiving terminal is by the described indication information of optical transport network expense reserve bytes reception from described transmitting terminal.
5. according to each described method in the claim 1 to 3, it is characterized in that before the described indication information of described receiving terminal reception from described transmitting terminal, described method also comprises:
All distribute a unique type identification for each forward error correction coding pattern, carry the pairing type identification of forward error correction coding pattern of described transmitting terminal in the described indication information.
6. according to each described method in the claim 1 to 3, it is characterized in that, described indication information also carries check digit, wherein, described check digit is used for after described receiving terminal is obtaining the forward error correction coding pattern of described transmitting terminal the forward error correction coding pattern of described transmitting terminal being carried out verification.
7. the synchronizer of a forward error correction encoding/decoding mode is characterized in that, comprising:
Receiver module is used to receive the indication information from transmitting terminal, and wherein, described indication information carries the forward error correction coding pattern of described transmitting terminal;
Acquisition module is used for obtaining according to described indication information the forward error correction coding pattern of described transmitting terminal;
Determination module is used for determining corresponding decoding schema according to the forward error correction coding pattern of described transmitting terminal.
8. device according to claim 7 is characterized in that, also comprises:
Judge module is used to judge whether to support the forward error correction coding pattern of described transmitting terminal;
Alarm module is used to send the alarm that described receiving terminal is not supported the forward error correction coding pattern of described transmitting terminal.
9. device according to claim 8 is characterized in that, also comprises:
The alarm receiver module is used to receive the described alarm that described alarm module sends;
Change module, be used for changing the forward error correction coding pattern according to described alarm;
Sending module is used to send described indication information, wherein, and the forward error correction coding pattern of transmitting terminal described in the described indication information.
10. according to each described device in the claim 7 to 9, it is characterized in that, also comprise:
The verification module is used to described indication information to add check digit, and wherein, described check digit is used for after described receiving terminal is obtaining the forward error correction coding pattern of described transmitting terminal the forward error correction coding pattern of described transmitting terminal being carried out verification.
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| CNA200910150256XA CN101594206A (en) | 2009-06-23 | 2009-06-23 | The method for synchronous of forward error correction encoding/decoding mode and device |
| PCT/CN2009/073978 WO2010148594A1 (en) | 2009-06-23 | 2009-09-16 | Method and apparatus for synchronization of forward error correction encoding and decoding mode |
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| CNA200910150256XA CN101594206A (en) | 2009-06-23 | 2009-06-23 | The method for synchronous of forward error correction encoding/decoding mode and device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107888320A (en) * | 2017-12-11 | 2018-04-06 | 国网浙江省电力有限公司 | A kind of frame synchronization detection method based on OTN |
| CN111817819A (en) * | 2019-04-12 | 2020-10-23 | 中兴通讯股份有限公司 | FEC mode synchronization method, system, main node and slave node |
| CN114070458A (en) * | 2020-08-04 | 2022-02-18 | 成都鼎桥通信技术有限公司 | Data transmission method, device, equipment and storage medium |
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| JP4920888B2 (en) * | 2002-12-16 | 2012-04-18 | ピーエムシー−シエラ イスラエル リミテッド | Method of initialization and auto-negotiation of Ethernet frame forward error correction |
| CN100450187C (en) * | 2005-10-17 | 2009-01-07 | 华为技术有限公司 | Multimedia data network realtime transfer method for supporting error elasticity |
| CN101047470A (en) * | 2006-05-17 | 2007-10-03 | 华为技术有限公司 | Allocation method for forward error correction function in passive optical network |
| CN101136720A (en) * | 2007-01-30 | 2008-03-05 | 中兴通讯股份有限公司 | Forward error correction information transmission implementing method |
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2009
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107888320A (en) * | 2017-12-11 | 2018-04-06 | 国网浙江省电力有限公司 | A kind of frame synchronization detection method based on OTN |
| CN111817819A (en) * | 2019-04-12 | 2020-10-23 | 中兴通讯股份有限公司 | FEC mode synchronization method, system, main node and slave node |
| CN111817819B (en) * | 2019-04-12 | 2023-06-02 | 中兴通讯股份有限公司 | FEC mode synchronization method, system, master node and slave node |
| CN114070458A (en) * | 2020-08-04 | 2022-02-18 | 成都鼎桥通信技术有限公司 | Data transmission method, device, equipment and storage medium |
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| WO2010148594A1 (en) | 2010-12-29 |
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