CN102075296B - Method, system and device for implementing forward error correction (FEC) of optical transport network (OTN) back board - Google Patents
Method, system and device for implementing forward error correction (FEC) of optical transport network (OTN) back board Download PDFInfo
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- CN102075296B CN102075296B CN201110022910.6A CN201110022910A CN102075296B CN 102075296 B CN102075296 B CN 102075296B CN 201110022910 A CN201110022910 A CN 201110022910A CN 102075296 B CN102075296 B CN 102075296B
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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
- H04L1/0041—Arrangements at the transmitter end
- H04L1/0043—Realisations of complexity reduction techniques, e.g. use of look-up tables
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/16—Time-division multiplex systems in which the time allocation to individual channels within a transmission cycle is variable, e.g. to accommodate varying complexity of signals, to vary number of channels transmitted
- H04J3/1694—Allocation of channels in TDM/TDMA networks, e.g. distributed multiplexers
Abstract
The invention discloses a method, a system and a device for implementing forward error correction (FEC) of an optical transport network (OTN) back board. The invention aims to solve the problems of waste of system resources and failure of realization of the flexible adjustment of signal transmission quality when the FEC function of a prior OTN back board is realized. The method comprises the following steps of: determining a time slot parameter value according to the configured number of FEC encoders when a sending terminal performs data transmission; dividing optical channel transport unit (OTUK) data frames to be sent into corresponding paths of data according to the time slot parameter value, and sending the data to each corresponding FEC encoder for encoding; and multiplexing each path of encoded data into OTUK data frames for transmission according to the determined time slot parameter value. In the embodiment of the invention, the number of FEC encoders can be configured according to the requirement on signal transmission quality and the number is not less than one, so system resources can be effectively saved and FEC can be flexibly realized according to the requirement on signal transmission quality.
Description
Technical field
The transport network technical field that the present invention relates to communicate by letter, relates in particular to the method, system and device that a kind of optical transfer network (OpticalTransport Network, OTN) backboard is realized forward error correction (Forward Error Correction, FEC).
Background technology
OTN be take wavelength division multiplexing (Wavelength Division Multiplexing, WDM) technology as basis, in the transport network of photosphere organization network, and is the Backbone Transport Network in next generation network.Standardization department of OTNShi international telecommunication union telecommunication (ITU-T) by G.872, G.709, G.798 a new generation's " digital transmission system " and " optical transport hierarchy " of series of standards institute standard such as.OTN will solve traditional WDM network without the long business dispatching of wavelength/wavelet a little less than, the problem such as a little less than networking capability, a little less than protective capability.
In digital signal, in order to prevent outer signals interference, guard signal does not make a variation, and carry out multiple error correcting code setting.Digital signal is in decode procedure, very responsive to rub-out signal, as long as there is very little very little error code each second, and just cannot normal decoder.In the arranging of various error correcting codes, the forward error correction that is referred to as FEC is a very important anti-tampering algorithm.Adopt forward error correction, can reduce the error rate of digital signal, improve the reliability of signal transmission.
OTN backboard transmission at present, when realizing the function of FEC, adopts 16 coder/decoders of fixed qty to realize.But for the less demanding situation of signal transmission quality, 16 coder/decoders can cause the waste of system resource, and due to different users or different occasion different to the requirement of signal transmission quality, and adopt the coder/decoder of fixed qty can only realize fixing signal transmission quality, cannot realize the flexible adjustment of signal transmission quality.
Summary of the invention
In view of this, the embodiment of the present invention provides a kind of OTN backboard to realize the method, system and device of FEC, in order to solve the transmission of existing OTN backboard when realizing the function of FEC, cause the waste of system resource and cannot realize the problem of the flexible adjustment of signal transmission quality.
A kind of optical transfer network backboard that the embodiment of the present invention provides is realized the sending method of forward error correction, comprising:
Transmitting terminal, according to the number of the forward error correction coder self configuring recognizing, is determined minislot parameter value, and the number of wherein said forward error correction coder is to be not less than 1 numerical value;
According to definite minislot parameter value, the data that are corresponding road by Optical Channel Transport Unit-k OTUk data frame dividing to be sent, and the every circuit-switched data after dividing is sent to corresponding forward error correction coder coding;
According to definite minislot parameter value, the every circuit-switched data after coding is multiplexed into OTUk Frame and sends.
A kind of optical transfer network backboard that the embodiment of the present invention provides is realized the method for reseptance of forward error correction, comprising:
Receiving terminal, according to the number of the forward error correction decoder self configuring recognizing, is determined minislot parameter value, and wherein, the number of described forward error correction decoder is identical with the number of the forward error correction coder of transmitting terminal configuration;
According to definite minislot parameter value, the data that are corresponding road by the Optical Channel Transport Unit-k OTUk data frame dividing receiving, and the every circuit-switched data after dividing is sent to corresponding forward error correction decoder decoding;
According to definite minislot parameter value, decoded every circuit-switched data is multiplexed into OTUk Frame and sends.
A kind of optical transfer network backboard that the embodiment of the present invention provides is realized the system of forward error correction, comprising:
Transmitting terminal, the number of the forward error correction coder self configuring recognizing for basis, determine minislot parameter value, the number of wherein said forward error correction coder is to be not less than 1 numerical value, according to definite minislot parameter value, the data that are corresponding road by Optical Channel Transport Unit-k OTUk data frame dividing to be sent, and the every circuit-switched data after dividing is sent to corresponding forward error correction coder coding, according to definite minislot parameter value, the every circuit-switched data after coding is multiplexed into OTUk Frame and sends;
Receiving terminal, the number of the forward error correction decoder self configuring recognizing for basis, determine minislot parameter value, wherein, the number of described forward error correction decoder is identical with the number of the forward error correction coder of transmitting terminal configuration, according to definite minislot parameter value, the data that are corresponding road by the Optical Channel Transport Unit-k OTUk data frame dividing receiving, and the every circuit-switched data after dividing is sent to corresponding forward error correction decoder decoding, according to definite minislot parameter value, decoded every circuit-switched data is multiplexed into OTUk Frame and sends.
A kind of optical transfer network backboard that the embodiment of the present invention provides is realized the dispensing device of forward error correction, comprising:
Frame time slot regulon, the number of the forward error correction coder self configuring recognizing for basis, determine minislot parameter value, and definite minislot parameter value is sent to Frame time slot resolving cell and Frame timeslot multiplex unit, the number of wherein said forward error correction coder is to be not less than 1 numerical value;
Frame time slot resolving cell, for according to the minislot parameter value receiving, the data that are corresponding road by Optical Channel Transport Unit-k OTUk data frame dividing to be sent, and the every circuit-switched data after dividing is sent to corresponding forward error correction coder;
At least one forward error correction coder, for the data that receive are encoded, and sends to Frame timeslot multiplex unit by the data after coding;
Frame timeslot multiplex unit, for according to the minislot parameter value receiving, is multiplexed into OTUk Frame by the every circuit-switched data after coding and sends.
A kind of optical transfer network backboard that the embodiment of the present invention provides is realized the receiving system of forward error correction, comprising:
Frame time slot regulon, the number of the forward error correction decoder self configuring recognizing for basis, determine minislot parameter value, and definite minislot parameter value is sent to Frame time slot resolving cell and Frame timeslot multiplex unit, wherein, the number of described forward error correction decoder is identical with the number of the forward error correction coder of transmitting terminal configuration;
Frame time slot resolving cell, for according to the minislot parameter value receiving, the data that are corresponding road by the Optical Channel Transport Unit-k OTUk data frame dividing receiving, and the every circuit-switched data after dividing is sent to corresponding forward error correction decoder;
At least one forward error correction decoder, for to the decoding data receiving, and sends to Frame timeslot multiplex unit by decoded data;
Frame timeslot multiplex unit, for according to the minislot parameter value receiving, is multiplexed into OTUk Frame by decoded every circuit-switched data and sends.
The embodiment of the present invention provides a kind of OTN backboard to realize the method, system and device of FEC, when transmitting terminal carries out the transmission of data, the number of the FEC encoder configuring according to self, determine minislot parameter value, the data that are corresponding road by OTUk data frame dividing to be sent according to this minislot parameter value, send to each corresponding FEC encoder encodes, and by the every circuit-switched data after coding, according to definite minislot parameter value, be multiplexed into OTUk Frame and send.Owing to can configuring the number of FEC encoder according to the requirement of signal transmission quality in embodiments of the present invention, this number is to be not less than 1 numerical value, therefore can effectively save system resource, and can, according to the requirement of signal transmission quality, realize flexibly FEC.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms a part of the present invention, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
A kind of OTN backboard that Fig. 1 provides for the embodiment of the present invention is realized the dispensing device structural representation of FEC;
A kind of OTN backboard that Fig. 2 provides for the embodiment of the present invention is realized the process of transmitting of FEC;
The structural representation of the dispensing device shown in concrete combination Fig. 1 that Fig. 3 provides for the embodiment of the present invention;
A kind of OTN backboard that Fig. 4 provides for the embodiment of the present invention is realized the structural representation of the receiving system of FEC;
A kind of OTN backboard that Fig. 5 provides for the embodiment of the present invention is realized the receiving course of FEC;
The structural representation of the receiving system shown in concrete combination Fig. 5 that Fig. 6 provides for the embodiment of the present invention;
When the dispensing device that Fig. 7 provides for the embodiment of the present invention and receiving system are arranged in same equipment, the composition structural representation of dispensing device and receiving system;
A kind of OTN backboard that Fig. 8 provides for the embodiment of the present invention is realized the system configuration schematic diagram of FEC.
Embodiment
The embodiment of the present invention, in order to save system resource, according to the transmission quality requirements of signal, realizes FEC flexibly, provides a kind of OTN backboard to realize the method, system and device of FEC.By the number of flexible configuration FEC encoder, realize the requirement of unlike signal transmission quality in embodiments of the present invention.And because OTN backboard in embodiments of the present invention can be realized FEC flexibly according to the requirement of signal transmission quality, therefore improved backboard and client's plate, the fault-tolerant ability that the signal between backboard and wiring board plate transmits, has guaranteed signal transmission quality.
In order to make technical problem to be solved by this invention, technical scheme and beneficial effect clearer, clear, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
A kind of OTN backboard that Fig. 1 provides for the embodiment of the present invention is realized the dispensing device structural representation of FEC, and this device comprises: Frame time slot regulon 11, Frame time slot resolving cell 12, at least one forward error correction coder 13 and Frame timeslot multiplex unit 14.
Frame time slot regulon 11, the number of the forward error correction coder 13 self configuring recognizing for basis, determine minislot parameter value, and definite minislot parameter value is sent to Frame time slot resolving cell 12 and Frame timeslot multiplex unit 14, wherein the number of forward error correction coder 13 is to be not less than 1 numerical value;
Frame time slot resolving cell 12, for according to the minislot parameter value receiving, the data that are corresponding road by Optical Channel Transport Unit-k OTUk data frame dividing to be sent, and the every circuit-switched data after dividing is sent to corresponding forward error correction coder 13;
Forward error correction coder 13, for the data that receive are encoded, and sends to Frame timeslot multiplex unit 14 by the data after coding;
Frame timeslot multiplex unit 14, for according to the minislot parameter value receiving, is multiplexed into OTUk Frame by the every circuit-switched data after coding and sends.
And the number of the FEC encoder self configuring for the ease of 11 identifications of Frame time slot regulon, also comprises in this device in embodiments of the present invention:
At least one status register, for whether having loaded corresponding forward error correction coder 13 according to the position of the forward error correction coder 13 with self connecting, determines whether to change the numerical value of self.Wherein each status register is connected with the position of a FEC encoder, according to this position, whether has loaded the numerical value that FEC encoder is determined self.
Can configure the number of different FEC encoders according to the requirement of signal transmission quality in embodiments of the present invention, concrete can reserve the position of 16 FEC encoders in embodiments of the present invention in this dispensing device.And can also, according to the order of position, determine the sequence number of each FEC encoder position for the ease of managing.When having configured according to the requirement of signal transmission quality after the FEC encoder of respective number, can be by each the FEC encoder configuring, according to the numeric order of position by each FEC encoder load to corresponding FEC encoder position.
Be connected with a status register with each FEC encoder position, when this FEC encoder position has loaded FEC encoder, the value of this status register is 1, and when FEC encoder obtains position and do not load FEC encoder, the value of this status register is 0.
A kind of OTN backboard that Fig. 2 provides for the embodiment of the present invention is realized the process of transmitting of FEC, and this process comprises the following steps:
S201: transmitting terminal, according to the number of the forward error correction coder self configuring recognizing, is determined minislot parameter value, and the number of wherein said forward error correction coder is to be not less than 1 numerical value.
S202: according to definite minislot parameter value, the data that are corresponding road by Optical Channel Transport Unit-k OTUk data frame dividing to be sent, and the every circuit-switched data after dividing is sent to corresponding forward error correction coder coding.
S203: according to definite minislot parameter value, the every circuit-switched data after coding is multiplexed into OTUk Frame and sends.
Describedly every circuit-switched data after coding is multiplexed into OTUk Frame sends and to comprise:
According to the order of dividing every circuit-switched data, according to definite minislot parameter value, the every circuit-switched data after coding is multiplexed into OTUk Frame and sends.
The structural representation of the dispensing device shown in concrete combination Fig. 1 that Fig. 3 provides for the embodiment of the present invention, the process of transmitting that above-mentioned OTN backboard is realized to FEC is elaborated.Frame time slot regulon in dispensing device is by reading the numerical value with each status register of 16 corresponding connections of FEC encoder position in embodiments of the present invention, judge whether current self the position of each FEC encoder has loaded corresponding FEC encoder, thereby determine the number of the FEC encoder of self configuration.
When Frame time slot regulon, determined after the number of the FEC encoder self configuring, determined minislot parameter value, OTUk Frame should be decomposed into how many time slots.When Frame time slot regulon has been determined after minislot parameter value, this minislot parameter value is sent to Frame time slot resolving cell and Frame timeslot multiplex unit, make Frame time slot resolving cell and Frame timeslot multiplex unit carry out correct time slot to OTUk Frame and decompose and timeslot multiplex.
The minislot parameter value that Frame time slot resolving cell sends according to Frame time slot regulon, is decomposed into the to be sent OTUk Frame that does not carry out FEC the data on corresponding road, and every circuit-switched data is exported to the corresponding FEC encoder of configuration.There is annexation in the position of Frame time slot resolving cell and each FEC encoder, but when work only adopts the connection line work at the FEC encoder place of configuration.Wherein, when Frame time slot resolving cell is decomposed into the data on corresponding road by the to be sent OTUk Frame that does not carry out FEC, according to time slot, interleaves and carry out.
After each FEC encoder is encoded to the data that receive, each FEC encoder is exported to Frame timeslot multiplex unit by the data after coding.The minislot parameter value that Frame timeslot multiplex unit sends according to the Frame time slot regulon receiving, becomes OTUk Frame by the data-reusing after each the FEC encoder encodes receiving.Wherein, there is annexation in the position of Frame timeslot multiplex unit and each FEC encoder, but when work only adopts the connection line work at the FEC encoder place of configuration.
A kind of OTN backboard that Fig. 4 provides for the embodiment of the present invention is realized the structural representation of the receiving system of FEC, and this device comprises: Frame time slot regulon 41, Frame time slot resolving cell 42, at least one forward error correction decoder 43 and Frame timeslot multiplex unit 44.
Frame time slot regulon 41, the number of the forward error correction decoder 43 self configuring recognizing for basis, determine minislot parameter value, and definite minislot parameter value is sent to Frame time slot resolving cell 42 and Frame timeslot multiplex unit 44, wherein, the number of described forward error correction decoder 43 is identical with the number of the forward error correction coder of dispensing device configuration;
Frame time slot resolving cell 42, for according to the minislot parameter value receiving, the data that are corresponding road by the Optical Channel Transport Unit-k OTUk data frame dividing receiving, and the every circuit-switched data after dividing is sent to corresponding forward error correction decoder 43;
Forward error correction decoder 43, for to the decoding data receiving, and sends to Frame timeslot multiplex unit by decoded data;
Frame timeslot multiplex unit 44, for according to the minislot parameter value receiving, is multiplexed into OTUk Frame by decoded every circuit-switched data and sends.
And the number of the fec decoder device self configuring for the ease of 44 identifications of Frame time slot regulon, also comprises in this device in embodiments of the present invention:
At least one status register, for whether having loaded corresponding forward error correction decoder according to the position of the forward error correction decoder with self connecting, determines whether to change the numerical value of self.Wherein each status register is connected with the position of a fec decoder device, according to this position, whether has loaded the numerical value that fec decoder device is determined self.
Can configure the number of different fec decoder devices according to the requirement of signal transmission quality in embodiments of the present invention, concrete can reserve the position of 16 fec decoder devices in embodiments of the present invention in this receiving system.And can also, according to the order of position, determine the sequence number of each fec decoder device position for the ease of managing.When having configured according to the requirement of signal transmission quality after the fec decoder device of respective number, can, by each the fec decoder device configuring, according to the numeric order of position, each fec decoder device be loaded on to corresponding fec decoder device position.
Be connected with a status register with each fec decoder device position, when this fec decoder device position has loaded fec decoder device, the value of this status register is 1, and when fec decoder device obtains position and do not load fec decoder device, the value of this status register is 0.
A kind of OTN backboard that Fig. 5 provides for the embodiment of the present invention is realized the receiving course of FEC, and this process comprises the following steps:
S501: receiving terminal, according to the number of the forward error correction decoder self configuring recognizing, is determined minislot parameter value, wherein, the number of described forward error correction decoder is identical with the number of the forward error correction coder of transmitting terminal configuration.
S502: according to definite minislot parameter value, the data that are corresponding road by the Optical Channel Transport Unit-k OTUk data frame dividing of reception, and the every circuit-switched data after dividing is sent to corresponding forward error correction decoder decoding.
S503: according to definite minislot parameter value, decoded every circuit-switched data is multiplexed into OTUk Frame and sends.
Describedly decoded every circuit-switched data is multiplexed into OTUk Frame sends and to comprise:
According to the order of dividing every circuit-switched data, according to definite minislot parameter value, decoded every circuit-switched data is multiplexed into OTUk Frame and sends.
The structural representation of the receiving system shown in concrete combination Fig. 5 that Fig. 6 provides for the embodiment of the present invention, the receiving course that above-mentioned OTN backboard is realized to FEC is elaborated.Frame time slot regulon in receiving system is by reading the numerical value with each status register of 16 corresponding connections in fec decoder device position in embodiments of the present invention, judge whether current self the position of each fec decoder device has loaded corresponding fec decoder device, thereby determine the number of the fec decoder device of self configuration.
In order to realize, to having carried out the OTUk Frame of FEC, carry out correct decoding, the number of the FEC encoder of employing while needing in embodiments of the present invention basis to carry out FEC to these OTUk data, the number of fec decoder device in configuration receiving system, the number of the fec decoder device in receiving system is identical with the number of the FEC encoder configuring in dispensing device.
When Frame time slot regulon, determined after the number of the fec decoder device self configuring, determined minislot parameter value, OTUk Frame should be decomposed into how many time slots.When Frame time slot regulon has been determined after minislot parameter value, this minislot parameter value is sent to Frame time slot resolving cell and Frame timeslot multiplex unit, make Frame time slot resolving cell and Frame timeslot multiplex unit carry out correct time slot to OTUk Frame and decompose and timeslot multiplex.
The minislot parameter value that Frame time slot resolving cell sends according to Frame time slot regulon, is decomposed into the OTUk Frame that has carried out FEC receiving the data on corresponding road, and every circuit-switched data is exported to the corresponding fec decoder device of configuration.There is annexation in the position of Frame time slot resolving cell and each fec decoder device, but when work only adopts the connection line work at the fec decoder device place of configuration.Wherein, when Frame time slot resolving cell is decomposed into the data on corresponding road by the OTUk Frame that has carried out FEC receiving, according to time slot, interleaves and carry out.
After each fec decoder device is to the decoding data receiving, each fec decoder device is exported to Frame timeslot multiplex unit by decoded data.The minislot parameter value that Frame timeslot multiplex unit sends according to the Frame time slot regulon receiving, becomes OTUk Frame (this OTUk Frame is not for carrying out the Frame of FEC) by the decoded data-reusing of each fec decoder device receiving.Wherein, there is annexation in the position of Frame timeslot multiplex unit and each fec decoder device, but when work only adopts the connection line work at the fec decoder device place of configuration.
Concrete this dispensing device and receiving system can be arranged in same equipment, also can be arranged in different equipment, when this dispensing device and receiving system are arranged in same equipment, can share a data frame slot regulon.
When the dispensing device that Fig. 7 provides for the embodiment of the present invention and receiving system are arranged in same equipment, the composition structural representation of dispensing device and receiving system, this equipment comprises Frame time slot regulon, the first Frame time slot resolving cell and the first Frame timeslot multiplex unit in dispensing device, the Frame time slot regulon in receiving system, the second Frame time slot resolving cell and the second Frame timeslot multiplex unit.The process that OTN backboard in the embodiment of the present invention is realized to FEC in conjunction with Fig. 7 is elaborated.
First, determine the sequence number of the position at FEC encoder in dispensing device and receiving system and fec decoder device place, determine the position that in dispensing device and receiving system, sequence number is 1～16, the value of each status register being connected with fec decoder device with each FEC encoder is reset to 0.
The position of each the FEC encoder that is 1～9 in sequence number successively loads FEC encoder, each status register that each the FEC encoder position that is 1～9 with sequence number is connected, because this each position has loaded FEC encoder, the value of each status register being therefore connected with this each position is 1.
The position of each the fec decoder device that is 1～9 in sequence number successively loads fec decoder device, each status register that each the fec decoder device position that is 1～9 with sequence number is connected, because this each position has loaded fec decoder device, the value of each status register being therefore connected with this each position is 1.The dispensing device in other equipment corresponding with this receiving system has also adopted 9 FEC encoders to encode to data in realizing the process of FEC.
Frame time slot regulon reads the value of each status register being connected with each FEC encoder/decoder position, determine that sequence number is that the value of each status register of connecting of each FEC encoder/decoder position of 1～9 is 1, sequence number is that the value of each status register of connecting of each FEC encoder/decoder position of 10～16 is 0, and the number of therefore identifying the FEC encoder/decoder of self configuration is all 9.
Frame time slot regulon, according to the number of the FEC encoder/decoder self configuring recognizing, determines that minislot parameter value is 9.And this minislot parameter value of determining is sent to the first Frame time slot resolving cell, the first Frame timeslot multiplex unit and the second Frame time slot resolving cell, the second Frame timeslot multiplex unit.
The first Frame time slot resolving cell receives after the minislot parameter value of Frame time slot regulon transmission, the to be sent OUTk Frame that does not carry out FEC is decomposed into 9 circuit-switched data, it is 1～9 FEC encoder corresponding to position that every circuit-switched data is sent to sequence number, the processing of encoding.Sequence number after to be each FEC encoder corresponding to 1～9 position encode and process the data that receive, sends to the first Frame timeslot multiplex unit by the data after coding.
The first Frame timeslot multiplex unit is according to the minislot parameter value that receives, 9 circuit-switched data after each FEC encoder encodes corresponding to the position that is 1～9 by sequence number have been multiplexed into complete the carrying out OTUk Frame of FEC.
Equally, when the second Frame time slot resolving cell receives the OTUk Frame that has carried out FEC, according to the minislot parameter value that receives the transmission of Frame time slot regulon, the OUTk Frame that has carried out FEC receiving is decomposed into 9 circuit-switched data, it is 1～9 fec decoder device corresponding to position that every circuit-switched data is sent to sequence number, the processing of decoding.Sequence number is, after each fec decoder device corresponding to 1～9 position processed the decoding data receiving, decoded data to be sent to the second Frame timeslot multiplex unit.
The second Frame timeslot multiplex unit is according to the minislot parameter value receiving, and decoded 9 circuit-switched data of each fec decoder device corresponding to the position that is 1～9 by sequence number are multiplexed into the complete OTUk Frame that does not carry out FEC.
A kind of OTN backboard that Fig. 8 provides for the embodiment of the present invention is realized the system configuration schematic diagram of FEC, and this system comprises:
Transmitting terminal 81, the number of the forward error correction coder self configuring recognizing for basis, determine minislot parameter value, the number of wherein said forward error correction coder is to be not less than 1 numerical value, according to definite minislot parameter value, the data that are corresponding road by Optical Channel Transport Unit-k OTUk data frame dividing to be sent, and the every circuit-switched data after dividing is sent to corresponding forward error correction coder coding, according to definite minislot parameter value, the every circuit-switched data after coding is multiplexed into OTUk Frame and sends;
Receiving terminal 82, the number of the forward error correction decoder self configuring recognizing for basis, determine minislot parameter value, wherein, the number of described forward error correction decoder is identical with the number of the forward error correction coder of transmitting terminal configuration, according to definite minislot parameter value, the data that are corresponding road by the Optical Channel Transport Unit-k OTUk data frame dividing receiving, and the every circuit-switched data after dividing is sent to corresponding forward error correction decoder decoding, according to definite minislot parameter value, decoded every circuit-switched data is multiplexed into OTUk Frame and sends.
The embodiment of the present invention provides a kind of optical transfer network backboard to realize the method, system and device of forward error correction, when transmitting terminal carries out the transmission of data, the number of the FEC encoder configuring according to self, determine minislot parameter value, the data that are corresponding road by OTUk data frame dividing to be sent according to this minislot parameter value, send to each corresponding FEC encoder encodes, and by the every circuit-switched data after coding, according to definite minislot parameter value, be multiplexed into OTUk Frame and send.Owing to can configuring the number of FEC encoder according to the requirement of signal transmission quality in embodiments of the present invention, this number is to be not less than 1 numerical value, therefore can effectively save system resource, and can, according to the requirement of signal transmission quality, realize flexibly FEC.And because OTN backboard in embodiments of the present invention can be realized FEC flexibly according to the requirement of signal transmission quality, therefore improved backboard and client's plate, the fault-tolerant ability that the signal between backboard and wiring board plate transmits, has guaranteed signal transmission quality.
Above-mentioned explanation illustrates and has described a preferred embodiment of the present invention, but as previously mentioned, be to be understood that the present invention is not limited to disclosed form herein, should not regard the eliminating to other embodiment as, and can be used for various other combinations, modification and environment, and can, in invention contemplated scope described herein, by technology or the knowledge of above-mentioned instruction or association area, change.And the change that those skilled in the art carry out and variation do not depart from the spirit and scope of the present invention, all should be in the protection range of claims of the present invention.
Claims (11)
1. optical transfer network backboard is realized a sending method for forward error correction, it is characterized in that, comprising:
Transmitting terminal, according to the number of the forward error correction coder self configuring recognizing, is determined minislot parameter value, and the number of wherein said forward error correction coder is to be not less than 1 numerical value;
According to definite minislot parameter value, the data that are corresponding road by Optical Channel Transport Unit-k OTUk data frame dividing to be sent, and the every circuit-switched data after dividing is sent to corresponding forward error correction coder coding;
According to definite minislot parameter value, the every circuit-switched data after coding is multiplexed into OTUk Frame and sends.
2. the method for claim 1, is characterized in that, the number of identifying the forward error correction coder self configuring comprises:
According to the numerical value of each status register of connection corresponding to each forward error correction coder, identify the number of the forward error correction coder self configuring.
3. the method for claim 1, is characterized in that, describedly every circuit-switched data after coding is multiplexed into OTUk Frame sends and to comprise:
According to the order of dividing every circuit-switched data, according to definite minislot parameter value, the every circuit-switched data after coding is multiplexed into OTUk Frame and sends.
4. optical transfer network backboard is realized a method of reseptance for forward error correction, it is characterized in that, described method comprises:
Receiving terminal, according to the number of the forward error correction decoder self configuring recognizing, is determined minislot parameter value, and wherein, the number of described forward error correction decoder is identical with the number of the forward error correction coder of transmitting terminal configuration;
According to definite minislot parameter value, the data that are corresponding road by the Optical Channel Transport Unit-k OTUk data frame dividing receiving, and the every circuit-switched data after dividing is sent to corresponding forward error correction decoder decoding;
According to definite minislot parameter value, decoded every circuit-switched data is multiplexed into OTUk Frame and sends.
5. method as claimed in claim 4, is characterized in that, the number of identifying the forward error correction decoder self configuring comprises:
According to the numerical value of each status register of connection corresponding to each forward error correction decoder, identify the number of the forward error correction decoder self configuring.
6. method as claimed in claim 4, is characterized in that, describedly decoded every circuit-switched data is multiplexed into OTUk Frame sends and to comprise:
According to the order of dividing every circuit-switched data, according to definite minislot parameter value, decoded every circuit-switched data is multiplexed into OTUk Frame and sends.
7. optical transfer network backboard is realized a system for forward error correction, it is characterized in that, described system comprises:
Transmitting terminal, the number of the forward error correction coder self configuring recognizing for basis, determine minislot parameter value, the number of wherein said forward error correction coder is to be not less than 1 numerical value, according to definite minislot parameter value, the data that are corresponding road by Optical Channel Transport Unit-k OTUk data frame dividing to be sent, and the every circuit-switched data after dividing is sent to corresponding forward error correction coder coding, according to definite minislot parameter value, the every circuit-switched data after coding is multiplexed into OTUk Frame and sends;
Receiving terminal, the number of the forward error correction decoder self configuring recognizing for basis, determine minislot parameter value, wherein, the number of described forward error correction decoder is identical with the number of the forward error correction coder of transmitting terminal configuration, according to definite minislot parameter value, the data that are corresponding road by the Optical Channel Transport Unit-k OTUk data frame dividing receiving, and the every circuit-switched data after dividing is sent to corresponding forward error correction decoder decoding, according to definite minislot parameter value, decoded every circuit-switched data is multiplexed into OTUk Frame and sends.
8. optical transfer network backboard is realized a dispensing device for forward error correction, it is characterized in that, described device comprises:
Frame time slot regulon, the number of the forward error correction coder self configuring recognizing for basis, determine minislot parameter value, and definite minislot parameter value is sent to Frame time slot resolving cell and Frame timeslot multiplex unit, the number of wherein said forward error correction coder is to be not less than 1 numerical value;
Frame time slot resolving cell, for according to the minislot parameter value receiving, the data that are corresponding road by Optical Channel Transport Unit-k OTUk data frame dividing to be sent, and the every circuit-switched data after dividing is sent to corresponding forward error correction coder;
At least one forward error correction coder, for the data that receive are encoded, and sends to Frame timeslot multiplex unit by the data after coding;
Frame timeslot multiplex unit, for according to the minislot parameter value receiving, is multiplexed into OTUk Frame by the every circuit-switched data after coding and sends.
9. device as claimed in claim 8, is characterized in that, described device also comprises:
At least one status register, for whether having loaded corresponding forward error correction coder according to the position of the forward error correction coder with self connecting, determines whether to change the numerical value of self.
10. optical transfer network backboard is realized a receiving system for forward error correction, it is characterized in that, described device comprises:
Frame time slot regulon, the number of the forward error correction decoder self configuring recognizing for basis, determine minislot parameter value, and definite minislot parameter value is sent to Frame time slot resolving cell and Frame timeslot multiplex unit, wherein, the number of described forward error correction decoder is identical with the number of the forward error correction coder of transmitting terminal configuration;
Frame time slot resolving cell, for according to the minislot parameter value receiving, the data that are corresponding road by the Optical Channel Transport Unit-k OTUk data frame dividing receiving, and the every circuit-switched data after dividing is sent to corresponding forward error correction decoder;
At least one forward error correction decoder, for to the decoding data receiving, and sends to Frame timeslot multiplex unit by decoded data;
Frame timeslot multiplex unit, for according to the minislot parameter value receiving, is multiplexed into OTUk Frame by decoded every circuit-switched data and sends.
11. devices as claimed in claim 10, is characterized in that, described device also comprises:
At least one status register, for whether having loaded corresponding forward error correction decoder according to the position of the forward error correction decoder with self connecting, determines whether to change the numerical value of self.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110022910.6A CN102075296B (en) | 2011-01-20 | 2011-01-20 | Method, system and device for implementing forward error correction (FEC) of optical transport network (OTN) back board |
| PCT/CN2011/078595 WO2012097590A1 (en) | 2011-01-20 | 2011-08-18 | Method, system and device for backplane of optical transport network to implement forward error correction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201110022910.6A CN102075296B (en) | 2011-01-20 | 2011-01-20 | Method, system and device for implementing forward error correction (FEC) of optical transport network (OTN) back board |
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| CN102075296A CN102075296A (en) | 2011-05-25 |
| CN102075296B true CN102075296B (en) | 2014-08-20 |
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| CN201110022910.6A Expired - Fee Related CN102075296B (en) | 2011-01-20 | 2011-01-20 | Method, system and device for implementing forward error correction (FEC) of optical transport network (OTN) back board |
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| CN102075296B (en) * | 2011-01-20 | 2014-08-20 | 中兴通讯股份有限公司 | Method, system and device for implementing forward error correction (FEC) of optical transport network (OTN) back board |
| CN102356585A (en) * | 2011-08-19 | 2012-02-15 | 华为技术有限公司 | Fiber transmission module and optical signal transmission device |
| CN110149148B (en) * | 2018-02-13 | 2022-02-25 | 颖飞公司 | Communication system and optical transceiver device |
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| CN1195935A (en) * | 1997-04-10 | 1998-10-14 | 诺基亚流动电话有限公司 | Method for decreasing frame error rate in data transmission in form of data frames |
| CN101888283A (en) * | 2009-05-11 | 2010-11-17 | 三菱电机株式会社 | Fec frame structuring device and fec frame structuring method |
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| US6845104B2 (en) * | 2000-06-14 | 2005-01-18 | Ipr Licensing, Inc. | Receiver for time division multiplex system without explicit time slot assignment |
| US7209714B2 (en) * | 2003-08-29 | 2007-04-24 | Nokia Corporation | Apparatus, and associated method, for communicating data at selected levels of diversity in a radio communication system |
| US8671331B2 (en) * | 2006-08-25 | 2014-03-11 | Tellabs Operations, Inc. | Apparatus and method for communicating FEC mode and alarming mismatch |
| CN101051879B (en) * | 2007-04-06 | 2012-04-04 | 华为技术有限公司 | Method and device for multiplying and de-multiplying low speed service |
| US8655169B2 (en) * | 2008-09-29 | 2014-02-18 | Infinera Corporation | Degradation adaptation network |
| CN102075296B (en) * | 2011-01-20 | 2014-08-20 | 中兴通讯股份有限公司 | Method, system and device for implementing forward error correction (FEC) of optical transport network (OTN) back board |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1195935A (en) * | 1997-04-10 | 1998-10-14 | 诺基亚流动电话有限公司 | Method for decreasing frame error rate in data transmission in form of data frames |
| CN101888283A (en) * | 2009-05-11 | 2010-11-17 | 三菱电机株式会社 | Fec frame structuring device and fec frame structuring method |
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| CN102075296A (en) | 2011-05-25 |
| WO2012097590A1 (en) | 2012-07-26 |
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