CN102075296A - 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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- CN102075296A CN102075296A CN2011100229106A CN201110022910A CN102075296A CN 102075296 A CN102075296 A CN 102075296A CN 2011100229106 A CN2011100229106 A CN 2011100229106A CN 201110022910 A CN201110022910 A CN 201110022910A CN 102075296 A CN102075296 A CN 102075296A
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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 present invention relates to communication and transmit the network technology field, (OpticalTransport Network, OTN) backboard is realized forward error correction (Forward Error Correction, method, system and device FEC) to relate in particular to a kind of optical transfer network.
Background technology
OTN is that (Wavelength Division Multiplexing, WDM) technology is the basis, at the transmission net of photosphere organization network, and is Backbone Transport Network in the next generation network with wavelength division multiplexing.OTN is that G.872, G.709, G.798 standardization department of international telecommunication union telecommunication (ITU-T) by waiting a new generation's " digital transmission system " and " optical transport hierarchy " of series of standards institute standard.OTN will solve traditional WDM network does not have problems such as the long service dispatching ability of wavelength/wavelet is weak, networking capability is weak, protective capability is weak.
In digital signal, disturb in order to prevent outer signals, guard signal does not make a variation, and carry out multiple error correcting code setting.Digital signal is in decode procedure, and is very responsive to rub-out signal, as long as very little very little error code is arranged each second, and just can't normal decoder.In being provided with 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.
When the OTN backboard is transmitted in the function that realizes FEC at present, adopt 16 coder/decoders of fixed qty to realize.But for the less demanding situation of signal transmission quality, 16 coder/decoders can cause resource waste, and because different user or different occasion are to the requirement difference of signal transmission quality, and the coder/decoder that adopts fixed qty can only be realized the signal transmission quality fixed, can't realize the flexible adjustment of signal transmission quality.
Summary of the invention
In view of this, the embodiment of the invention provides a kind of OTN backboard to realize the method, system and device of FEC, when being transmitted in the function that realizes FEC, causing resource waste and can't realize the problem of the flexible adjustment of signal transmission quality in order to solve existing OTN backboard.
A kind of optical transfer network backboard that the embodiment of the invention provides is realized the sending method of forward error correction, comprising:
Transmitting terminal is determined the minislot parameter value according to the number of the forward error correction coder that self disposes that recognizes, and the number of wherein said forward error correction coder is to be not less than 1 numerical value;
According to the minislot parameter value of determining, be the data on corresponding road with Optical Channel Transport Unit-k OTUk data frame dividing to be sent, and the every circuit-switched data after will dividing send to corresponding forward error correction coder coding;
According to the minislot parameter value of determining, the every circuit-switched data behind the coding is multiplexed into the OTUk Frame sends.
A kind of optical transfer network backboard that the embodiment of the invention provides is realized the method for reseptance of forward error correction, comprising:
Receiving terminal is determined the minislot parameter value according to the number of the forward error correction decoder that self disposes that recognizes, 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 the minislot parameter value of determining, be the data on corresponding road with the Optical Channel Transport Unit-k OTUk data frame dividing that receives, and the every circuit-switched data after will dividing send to corresponding forward error correction decoder decoding;
According to the minislot parameter value of determining, decoded every circuit-switched data is multiplexed into the OTUk Frame sends.
A kind of optical transfer network backboard that the embodiment of the invention provides is realized the system of forward error correction, comprising:
Transmitting terminal, be used for number according to the forward error correction coder that self disposes that recognizes, determine the minislot parameter value, the number of wherein said forward error correction coder is to be not less than 1 numerical value, according to the minislot parameter value of determining, be the data on corresponding road with Optical Channel Transport Unit-k OTUk data frame dividing to be sent, and the every circuit-switched data after will dividing send to corresponding forward error correction coder coding, according to the minislot parameter value of determining, the every circuit-switched data behind the coding is multiplexed into the OTUk Frame sends;
Receiving terminal, be used for number according to the forward error correction decoder that self disposes that recognizes, determine the 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 the minislot parameter value of determining, with the Optical Channel Transport Unit-k OTUk data frame dividing that receives is the data on corresponding road, and the every circuit-switched data after will dividing sends to corresponding forward error correction decoder decoding, according to the minislot parameter value of determining, decoded every circuit-switched data is multiplexed into the OTUk Frame sends.
A kind of optical transfer network backboard that the embodiment of the invention provides is realized the dispensing device of forward error correction, comprising:
Frame time slot regulon, be used for number according to the forward error correction coder that self disposes that recognizes, determine the minislot parameter value, and the minislot parameter value of determining 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 is used for according to the minislot parameter value that receives, and be the data on corresponding road with Optical Channel Transport Unit-k OTUk data frame dividing to be sent, and the every circuit-switched data after will dividing sends to corresponding forward error correction coder;
At least one forward error correction coder is used for the data that receive are encoded, and the data after will encoding send to Frame timeslot multiplex unit;
Frame timeslot multiplex unit is used for according to the minislot parameter value that receives, and the every circuit-switched data behind the coding is multiplexed into the OTUk Frame sends.
A kind of optical transfer network backboard that the embodiment of the invention provides is realized the receiving system of forward error correction, comprising:
Frame time slot regulon, be used for number according to the forward error correction decoder that self disposes that recognizes, determine the minislot parameter value, and the minislot parameter value of determining 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 is used for according to the minislot parameter value that receives, and be the data on corresponding road with the Optical Channel Transport Unit-k OTUk data frame dividing that receives, and the every circuit-switched data after will dividing sends to corresponding forward error correction decoder;
At least one forward error correction decoder is used for the data that receive are decoded, and decoded data are sent to Frame timeslot multiplex unit;
Frame timeslot multiplex unit is used for according to the minislot parameter value that receives, and decoded every circuit-switched data is multiplexed into the OTUk Frame sends.
The embodiment of the 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, number according to the FEC encoder that self disposes, determine the minislot parameter value, according to this minislot parameter value data that are corresponding road with OTUk data frame dividing to be sent, send to each corresponding FEC encoder encodes, and the every circuit-switched data after will encoding, be multiplexed into the OTUk Frame according to the minislot parameter value of determining and send.Because can dispose the number of FEC encoder in embodiments of the present invention according to the requirement of signal transmission quality, this number is to be not less than 1 numerical value, therefore can effectively save system resource, and can realize FEC flexibly according to the requirement of signal transmission quality.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes a part of the present invention, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, does not constitute improper qualification of the present invention.In the accompanying drawings:
A kind of OTN backboard that Fig. 1 provides for the embodiment of the invention is realized the dispensing device structural representation of FEC;
A kind of OTN backboard that Fig. 2 provides for the embodiment of the invention is realized the process of transmitting of FEC;
The concrete structural representation that Fig. 3 provides for the embodiment of the invention in conjunction with dispensing device shown in Figure 1;
A kind of OTN backboard that Fig. 4 provides for the embodiment of the 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 invention is realized the receiving course of FEC;
The concrete structural representation that Fig. 6 provides for the embodiment of the invention in conjunction with receiving system shown in Figure 5;
When dispensing device that Fig. 7 provides for the embodiment of the 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 invention is realized the system configuration schematic diagram of FEC.
Embodiment
The embodiment of the invention according to the signal transfer quality requirement, realizes FEC in order to save system resource 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 the OTN backboard can be realized FEC flexibly according to the requirement of signal transmission quality in embodiments of the present invention, therefore improved backboard and client's plate, the fault-tolerant ability of the signal transmission between backboard and the wiring board plate has guaranteed signal transmission quality.
In order to make technical problem to be solved by this invention, technical scheme and beneficial effect clearer, clear,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
A kind of OTN backboard that Fig. 1 provides for the embodiment of the 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, be used for number according to the forward error correction coder 13 that self disposes that recognizes, determine the minislot parameter value, and the minislot parameter value of determining 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 is used for according to the minislot parameter value that receives, and be the data on corresponding road with Optical Channel Transport Unit-k OTUk data frame dividing to be sent, and the every circuit-switched data after will dividing sends to corresponding forward error correction coder 13;
Forward error correction coder 13 is used for the data that receive are encoded, and the data after will encoding send to Frame timeslot multiplex unit 14;
Frame timeslot multiplex unit 14 is used for according to the minislot parameter value that receives, and the every circuit-switched data behind the coding is multiplexed into the OTUk Frame sends.
And the number for the ease of the FEC encoder of Frame time slot regulon 11 identification self configuration also comprises in this device in embodiments of the present invention:
At least one status register is used for whether having loaded corresponding forward error correction coder 13 according to the position with the forward error correction coder 13 that self connects, and determines whether to change the numerical value of self.Wherein each status register is connected with the position of a FEC encoder, whether has loaded the FEC encoder according to this position and has determined the numerical value of self.
Can dispose the number of different FEC encoders according to the requirement of signal transmission quality in embodiments of the present invention, the concrete position that can in this dispensing device, reserve 16 FEC encoders in embodiments of the present invention.And can also determine the sequence number of each FEC encoder position according to the order of position for the ease of managing.After having disposed the FEC encoder of respective number according to the requirement of signal transmission quality, can be with each the FEC encoder that configures, according to the numeric order of position with 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 had loaded the FEC encoder, the value of this status register was 1, and when the FEC encoder gets the position when not loading the FEC encoder, the value of this status register is 0.
A kind of OTN backboard that Fig. 2 provides for the embodiment of the invention is realized the process of transmitting of FEC, and this process may further comprise the steps:
S201: transmitting terminal is determined the minislot parameter value according to the number of the forward error correction coder that self disposes that recognizes, and the number of wherein said forward error correction coder is to be not less than 1 numerical value.
S202: according to the minislot parameter value of determining, be the data on corresponding road, and the every circuit-switched data after will dividing sends to corresponding forward error correction coder coding with Optical Channel Transport Unit-k OTUk data frame dividing to be sent.
S203:, the every circuit-switched data behind the coding is multiplexed into the OTUk Frame sends according to the minislot parameter value of determining.
Every circuit-switched data after described will the coding is multiplexed into the transmission of OTUk Frame and comprises:
According to the order of dividing every circuit-switched data,, the every circuit-switched data behind the coding is multiplexed into the OTUk Frame sends according to the minislot parameter value of determining.
The concrete structural representation in conjunction with dispensing device shown in Figure 1 that Fig. 3 provides for the embodiment of the invention realizes that to above-mentioned OTN backboard the process of transmitting of FEC is elaborated.Frame time slot regulon in the 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.
Determined the number of FEC encoder of self configuration when Frame time slot regulon after, determine the minislot parameter value, promptly the OTUk Frame should be decomposed into what time slots.After Frame time slot regulon has been determined the 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 and decompose and timeslot multiplex the OTUk Frame.
Frame time slot resolving cell is decomposed into the data on corresponding road with the OTUk Frame that does not carry out FEC to be sent, and every circuit-switched data is exported to the corresponding FEC encoder of configuration according to the minislot parameter value that Frame time slot regulon sends.All there is annexation in the position of Frame time slot resolving cell and each FEC encoder, but the connection line work at the FEC encoder place of configuration the time is only adopted in work.Wherein, when Frame time slot resolving cell is decomposed into the data on corresponding road with the OTUk Frame that does not carry out FEC to be sent, interleaves according to time slot and to carry out.
After each FEC encoder was encoded to the data that receive, the data after each FEC encoder will be encoded were exported to Frame timeslot multiplex unit.Frame timeslot multiplex unit becomes the OTUk Frame according to the minislot parameter value that the Frame time slot regulon that receives sends with the data multiplex after each the FEC encoder encodes that receives.Wherein, all there is annexation in the position of Frame timeslot multiplex unit and each FEC encoder, but the connection line work at the FEC encoder place of configuration the time is only adopted in work.
A kind of OTN backboard that Fig. 4 provides for the embodiment of the 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, be used for number according to the forward error correction decoder 43 that self disposes that recognizes, determine the minislot parameter value, and the minislot parameter value of determining 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 is used for according to the minislot parameter value that receives, and be the data on corresponding road with the Optical Channel Transport Unit-k OTUk data frame dividing that receives, and the every circuit-switched data after will dividing sends to corresponding forward error correction decoder 43;
Forward error correction decoder 43 is used for the data that receive are decoded, and decoded data are sent to Frame timeslot multiplex unit;
Frame timeslot multiplex unit 44 is used for according to the minislot parameter value that receives, and decoded every circuit-switched data is multiplexed into the OTUk Frame sends.
And the number for the ease of the fec decoder device of Frame time slot regulon 44 identification self configuration also comprises in this device in embodiments of the present invention:
At least one status register is used for whether having loaded corresponding forward error correction decoder according to the position with the forward error correction decoder that self connects, and determines whether to change the numerical value of self.Wherein each status register is connected with the position of a fec decoder device, whether has loaded the fec decoder device according to this position and has determined the numerical value of self.
Can dispose the number of different fec decoder devices according to the requirement of signal transmission quality in embodiments of the present invention, the concrete position that can in this receiving system, reserve 16 fec decoder devices in embodiments of the present invention.And can also determine the sequence number of each fec decoder device position according to the order of position for the ease of managing.After having disposed the fec decoder device of respective number according to the requirement of signal transmission quality, can be with each the fec decoder device that configures, according to the numeric order of position each fec decoder device is loaded on corresponding fec decoder device position.
Be connected with a status register with each fec decoder device position, when this fec decoder device position had loaded the fec decoder device, the value of this status register was 1, and when the fec decoder device gets the position when not loading the 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 invention is realized the receiving course of FEC, and this process may further comprise the steps:
S501: receiving terminal is determined the minislot parameter value according to the number of the forward error correction decoder that self disposes that recognizes, 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.
S502: according to the minislot parameter value of determining, be the data on corresponding road, and the every circuit-switched data after will dividing sends to corresponding forward error correction decoder decoding with the Optical Channel Transport Unit-k OTUk data frame dividing that receives.
S503:, decoded every circuit-switched data is multiplexed into the OTUk Frame sends according to the minislot parameter value of determining.
Describedly decoded every circuit-switched data is multiplexed into the OTUk Frame sends and to comprise:
According to the order of dividing every circuit-switched data,, decoded every circuit-switched data is multiplexed into the OTUk Frame sends according to the minislot parameter value of determining.
The concrete structural representation in conjunction with receiving system shown in Figure 5 that Fig. 6 provides for the embodiment of the invention realizes that to above-mentioned OTN backboard the receiving course of FEC is elaborated.Frame time slot regulon in the 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 that the OTUk Frame that has carried out FEC is carried out correct decoding, the number of the FEC encoder that adopts when needing basis that these OTUk data are carried out FEC in embodiments of the present invention, the number of fec decoder device in the configuration receiving system, promptly the number of the FEC encoder that disposes in the number of the fec decoder device in the receiving system and the dispensing device is identical.
Determined the number of fec decoder device of self configuration when Frame time slot regulon after, determine the minislot parameter value, promptly the OTUk Frame should be decomposed into what time slots.After Frame time slot regulon has been determined the 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 and decompose and timeslot multiplex the OTUk Frame.
Frame time slot resolving cell is decomposed into the data on corresponding road with the OTUk Frame that has carried out FEC that receives, and every circuit-switched data is exported to the corresponding fec decoder device of configuration according to the minislot parameter value that Frame time slot regulon sends.All there is annexation in the position of Frame time slot resolving cell and each fec decoder device, but the connection line work at the fec decoder device place of configuration the time is only adopted in work.Wherein, when the OTUk Frame that has carried out FEC that Frame time slot resolving cell will receive is decomposed into the data on corresponding road, interleaves according to time slot and to carry out.
After each fec decoder device was decoded to the data that receive, each fec decoder device was exported to Frame timeslot multiplex unit with decoded data.The minislot parameter value that Frame timeslot multiplex unit sends according to the Frame time slot regulon that receives becomes OTUk Frame (this OTUk Frame is not for carrying out the Frame of FEC) with the decoded data multiplex of each fec decoder device that receives.Wherein, all there is annexation in the position of Frame timeslot multiplex unit and each fec decoder device, but the connection line work at the fec decoder device place of configuration the time is only adopted in work.
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, and can a shared data frame slot regulon.
When dispensing device that Fig. 7 provides for the embodiment of the invention and receiving system are arranged in same equipment, the composition structural representation of dispensing device and receiving system, comprise Frame time slot regulon, the first Frame time slot resolving cell and the first Frame timeslot multiplex unit in the dispensing device in this equipment, the Frame time slot regulon in the receiving system, the second Frame time slot resolving cell and the second Frame timeslot multiplex unit.In conjunction with Fig. 7 OTN backboard in the embodiment of the invention is realized that the process of FEC is elaborated.
At first, determine the sequence number of the position at FEC encoder in dispensing device and the receiving system and fec decoder device place, determine that promptly sequence number in dispensing device and the receiving system is 1～16 position, the value of each status register that will be connected with the fec decoder device with each FEC encoder all is reset to 0.
Be that the position of each FEC encoder of 1～9 loads the FEC encoder in sequence number successively, with sequence number is each status register that each FEC encoder position of 1～9 is connected, because this each position has loaded the FEC encoder, therefore the value of each status register that is connected with this each position is 1.
Be that the position of each fec decoder device of 1～9 loads the fec decoder device in sequence number successively, with sequence number is each status register that each fec decoder device position of 1～9 is connected, because this each position has loaded the fec decoder device, therefore the value of each status register that is connected with this each position is 1.Dispensing device in other promptly corresponding with this receiving system equipment has also adopted 9 FEC encoders that data are encoded in the process that realizes FEC.
Frame time slot regulon reads the value of each status register that is 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 discerning the FEC encoder/decoder of self configuration all is 9.
Frame time slot regulon determines that according to the number of the FEC encoder/decoder that self disposes that recognizes the minislot parameter value is 9.And this minislot parameter value that will determine sends 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.
After the first Frame time slot resolving cell receives the minislot parameter value of Frame time slot regulon transmission, the OUTk Frame that does not carry out FEC to be sent is decomposed into 9 circuit-switched data, every circuit-switched data is sent to the FEC encoder that sequence number is 1～9 position correspondence, carry out encoding process.Sequence number is after each FEC encoder of 1～9 position correspondence carries out encoding process to the data that receive, the data behind the coding to be sent to the first Frame timeslot multiplex unit.
The first Frame timeslot multiplex unit is according to the minislot parameter value that receives, is 9 circuit-switched data after each FEC encoder encodes of 1～9 the position correspondence OTUk Frames of FEC that have been multiplexed into complete carrying out with sequence number.
Equally, when the second Frame time slot resolving cell receives the OTUk Frame that has carried out FEC, according to receiving the minislot parameter value that Frame time slot regulon sends, the OUTk Frame that has carried out FEC that receives is decomposed into 9 circuit-switched data, every circuit-switched data is sent to the fec decoder device that sequence number is 1～9 position correspondence, carry out decoding processing.Sequence number is after each fec decoder device of 1～9 position correspondence carries out decoding processing to the data that receive, 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 that receives, is that decoded 9 circuit-switched data of each fec decoder device of 1～9 position correspondence are multiplexed into the complete OTUk Frame that does not carry out FEC with sequence number.
A kind of OTN backboard that Fig. 8 provides for the embodiment of the invention is realized the system configuration schematic diagram of FEC, and this system comprises:
Transmitting terminal 81, be used for number according to the forward error correction coder that self disposes that recognizes, determine the minislot parameter value, the number of wherein said forward error correction coder is to be not less than 1 numerical value, according to the minislot parameter value of determining, with Optical Channel Transport Unit-k OTUk data frame dividing to be sent is the data on corresponding road, and the every circuit-switched data after will dividing sends to corresponding forward error correction coder coding, according to the minislot parameter value of determining, the every circuit-switched data behind the coding is multiplexed into the OTUk Frame sends;
Receiving terminal 82, be used for number according to the forward error correction decoder that self disposes that recognizes, determine the 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 the minislot parameter value of determining, with the Optical Channel Transport Unit-k OTUk data frame dividing that receives is the data on corresponding road, and the every circuit-switched data after will dividing sends to corresponding forward error correction decoder decoding, according to the minislot parameter value of determining, decoded every circuit-switched data is multiplexed into the OTUk Frame sends.
The embodiment of the 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, number according to the FEC encoder that self disposes, determine the minislot parameter value, according to this minislot parameter value data that are corresponding road with OTUk data frame dividing to be sent, send to each corresponding FEC encoder encodes, and the every circuit-switched data after will encoding, be multiplexed into the OTUk Frame according to the minislot parameter value of determining and send.Because can dispose the number of FEC encoder in embodiments of the present invention according to the requirement of signal transmission quality, this number is to be not less than 1 numerical value, therefore can effectively save system resource, and can realize FEC flexibly according to the requirement of signal transmission quality.And because the OTN backboard can be realized FEC flexibly according to the requirement of signal transmission quality in embodiments of the present invention, therefore improved backboard and client's plate, the fault-tolerant ability of the signal transmission between backboard and the wiring board plate 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 the disclosed form of this paper, should not regard eliminating as to other embodiment, and can be used for various other combinations, modification and environment, and can in invention contemplated scope described herein, change by the technology or the knowledge of above-mentioned instruction or association area.And change that those skilled in the art carried out and variation do not break away from the spirit and scope of the present invention, then all should be in the protection range of claims of the present invention.
Claims (11)
1. the sending method of an optical transfer network backboard realization forward error correction is characterized in that, comprising:
Transmitting terminal is determined the minislot parameter value according to the number of the forward error correction coder that self disposes that recognizes, and the number of wherein said forward error correction coder is to be not less than 1 numerical value;
According to the minislot parameter value of determining, be the data on corresponding road with Optical Channel Transport Unit-k OTUk data frame dividing to be sent, and the every circuit-switched data after will dividing send to corresponding forward error correction coder coding;
According to the minislot parameter value of determining, the every circuit-switched data behind the coding is multiplexed into the OTUk Frame sends.
2. the method for claim 1 is characterized in that, the number of discerning the forward error correction coder that self disposes comprises:
According to the numerical value of each status register of corresponding connection, discern the number of the forward error correction coder of self configuration with each forward error correction coder.
3. the method for claim 1 is characterized in that, the every circuit-switched data after described will the coding is multiplexed into the transmission of OTUk Frame and comprises:
According to the order of dividing every circuit-switched data,, the every circuit-switched data behind the coding is multiplexed into the OTUk Frame sends according to the minislot parameter value of determining.
4. an optical transfer network backboard is realized the method for reseptance of forward error correction, it is characterized in that described method comprises:
Receiving terminal is determined the minislot parameter value according to the number of the forward error correction decoder that self disposes that recognizes, 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 the minislot parameter value of determining, be the data on corresponding road with the Optical Channel Transport Unit-k OTUk data frame dividing that receives, and the every circuit-switched data after will dividing send to corresponding forward error correction decoder decoding;
According to the minislot parameter value of determining, decoded every circuit-switched data is multiplexed into the OTUk Frame sends.
5. method as claimed in claim 4 is characterized in that, the number of discerning the forward error correction decoder that self disposes comprises:
According to the numerical value of each status register of corresponding connection, discern the number of the forward error correction decoder of self configuration with each forward error correction decoder.
6. method as claimed in claim 4 is characterized in that, describedly decoded every circuit-switched data is multiplexed into the OTUk Frame sends and to comprise:
According to the order of dividing every circuit-switched data,, decoded every circuit-switched data is multiplexed into the OTUk Frame sends according to the minislot parameter value of determining.
7. an optical transfer network backboard is realized the system of forward error correction, it is characterized in that described system comprises:
Transmitting terminal, be used for number according to the forward error correction coder that self disposes that recognizes, determine the minislot parameter value, the number of wherein said forward error correction coder is to be not less than 1 numerical value, according to the minislot parameter value of determining, be the data on corresponding road with Optical Channel Transport Unit-k OTUk data frame dividing to be sent, and the every circuit-switched data after will dividing send to corresponding forward error correction coder coding, according to the minislot parameter value of determining, the every circuit-switched data behind the coding is multiplexed into the OTUk Frame sends;
Receiving terminal, be used for number according to the forward error correction decoder that self disposes that recognizes, determine the 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 the minislot parameter value of determining, with the Optical Channel Transport Unit-k OTUk data frame dividing that receives is the data on corresponding road, and the every circuit-switched data after will dividing sends to corresponding forward error correction decoder decoding, according to the minislot parameter value of determining, decoded every circuit-switched data is multiplexed into the OTUk Frame sends.
8. an optical transfer network backboard is realized the dispensing device of forward error correction, it is characterized in that described device comprises:
Frame time slot regulon, be used for number according to the forward error correction coder that self disposes that recognizes, determine the minislot parameter value, and the minislot parameter value of determining 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 is used for according to the minislot parameter value that receives, and be the data on corresponding road with Optical Channel Transport Unit-k OTUk data frame dividing to be sent, and the every circuit-switched data after will dividing sends to corresponding forward error correction coder;
At least one forward error correction coder is used for the data that receive are encoded, and the data after will encoding send to Frame timeslot multiplex unit;
Frame timeslot multiplex unit is used for according to the minislot parameter value that receives, and the every circuit-switched data behind the coding is multiplexed into the OTUk Frame sends.
9. device as claimed in claim 8 is characterized in that, described device also comprises:
At least one status register is used for whether having loaded corresponding forward error correction coder according to the position with the forward error correction coder that self connects, and determines whether to change the numerical value of self.
10. an optical transfer network backboard is realized the receiving system of forward error correction, it is characterized in that described device comprises:
Frame time slot regulon, be used for number according to the forward error correction decoder that self disposes that recognizes, determine the minislot parameter value, and the minislot parameter value of determining 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 is used for according to the minislot parameter value that receives, and be the data on corresponding road with the Optical Channel Transport Unit-k OTUk data frame dividing that receives, and the every circuit-switched data after will dividing sends to corresponding forward error correction decoder;
At least one forward error correction decoder is used for the data that receive are decoded, and decoded data are sent to Frame timeslot multiplex unit;
Frame timeslot multiplex unit is used for according to the minislot parameter value that receives, and decoded every circuit-switched data is multiplexed into the OTUk Frame sends.
11. device as claimed in claim 10 is characterized in that, described device also comprises:
At least one status register is used for whether having loaded corresponding forward error correction decoder according to the position with the forward error correction decoder that self connects, and 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 |
|---|---|---|---|
| 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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| Publication Number | Publication Date |
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| CN102075296A true CN102075296A (en) | 2011-05-25 |
| CN102075296B 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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| WO (1) | WO2012097590A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102356585A (en) * | 2011-08-19 | 2012-02-15 | 华为技术有限公司 | Fiber transmission module and optical signal transmission device |
| WO2012097590A1 (en) * | 2011-01-20 | 2012-07-26 | 中兴通讯股份有限公司 | Method, system and device for backplane of optical transport network to implement forward error correction |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| US20050105547A1 (en) * | 2000-06-14 | 2005-05-19 | Ipr Licensing, Inc. | Receiver for time division multiplex system without explicit time slot assignment |
| WO2008122218A1 (en) * | 2007-04-06 | 2008-10-16 | Huawei Technologies Co., Ltd. | A method for multiplexing and de-multiplexing the low bit rate service |
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| CN102356585A (en) * | 2011-08-19 | 2012-02-15 | 华为技术有限公司 | Fiber transmission module and optical signal transmission device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012097590A1 (en) | 2012-07-26 |
| CN102075296B (en) | 2014-08-20 |
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