CN101710853B - Methods and devices for data mapping and data de-mapping - Google Patents
Methods and devices for data mapping and data de-mapping Download PDFInfo
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- CN101710853B CN101710853B CN 200910241262 CN200910241262A CN101710853B CN 101710853 B CN101710853 B CN 101710853B CN 200910241262 CN200910241262 CN 200910241262 CN 200910241262 A CN200910241262 A CN 200910241262A CN 101710853 B CN101710853 B CN 101710853B
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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
- H04J3/1605—Fixed allocated frame structures
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Abstract
The invention discloses a method for data mapping, which comprises the following steps: encoding fiber channel (FC) data into effective data packets and outputting encoded effective data packets, wherein the zero bit of the zero byte in the effective data packets is one; and receiving and caching the effective data packets, and when the number of all the cached effective data packets is not less than a preset threshold value, taking the cached effective data packets as optical channel payload unit (OPUk) data for output. The invention also discloses a method for data de-mapping. The methods for data mapping and data de-mapping can avoid the encapsulation process of a general framing protocol (GFP), thereby reducing the complexity of realizing an FC system.
Description
Technical field
The present invention relates to the optical communication data tranmission techniques, relate in particular to a kind of data map and separate the method and the device of mapping.
Background technology
At present, optical-fibre channel (FC, Fiber Channel) data in transmission course since the speed ratio Optical Transmission Network OTN (OTN, Optical Transport Network) of FC standard is low, so FC can not map directly in the frame structure of OTN; Particularly 1G FC because the speed of 1G FC has only 1.0625Gbps, is 42% of Optical Channel Data Unit-k (ODU1, an Optical channel Data Unit-1) bandwidth, if its direct rate adapted is arrived ODU1, then can waste 58% bandwidth.
In the prior art; Common way is: in transmission; With two-way 1G FC data converge through Generic Framing Procedure (GFP, Generic Framing Procedure) encapsulation and rate adapted to the speed of optical channel Payload Unit (OPU1, Optical channel Payload Unit-1); Be the ODU1 data with the OPU1 data framing again; Be optical channel transmission unit (OTU1, Optical channel Transport Unit-1) data with the ODU1 data framing then, at last through the OTN transmission.This processing mode is not only complicated, and can not dispatch the 1G FC data of single channel.But; After the definition appearance of big capacity interleaving techniques and International Telecommunications Union's telecommunication standards group (ITU-T) about ODU0 in the agreement G.709; The user can be again with two-way 1G FC data converge through the GFP encapsulation and rate adapted to the speed of OPU1, rate adapted arrives OPU0 and can directly encapsulate also through GFP one road 1G FC data, is the ODU0 data with the OPU0 data framing again; Be the OTU0 data with the ODU0 data framing then, at last through the OTN transmission.
Though above-mentioned processing mode has been save the process of converging, generally speaking, when transmission FC data; Rate adapted is the ODUk data with the OPUk data framing to OPUk more also to need to encapsulate also through GFP the FC data earlier at present, is the OTUk data with the ODUk data framing then; Through the OTN transmission, still, the GFP encapsulation process is complicated at last; This causes the realization of FC system also very complicated, thereby wastes too much resource.
Summary of the invention
In view of this, main purpose of the present invention is a kind of data map is provided and method and the device of separating mapping, can avoid the GFP encapsulation process, thereby reduces the complexity that the FC system realizes.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of method of data map comprises:
The FC digital coding is become effective data packets, and the effective data packets behind the output encoder, the 0th of the 0th byte the is 1 in the said effective data packets;
Receive and the buffering effective data packets, when all effective data packets quantity of buffering are not less than preset threshold value, the effective data packets of buffering is exported as the OPUk data;
Wherein, saidly become effective data packets to be specially the FC digital coding:
Per seven 9 FC digital coding are become an effective data packets that comprises eight 8 bytes; Wherein, The 0th of the 0th byte the is all the other 7 the K sign indicating numbers that are followed successively by each FC data of 1, the 0 byte in the effective data packets, and all the other bytes are followed successively by the valid data of each FC data.
Wherein, said method further comprises: when all data packet numbers of buffering during less than said threshold value, the packet of all-zero word joint is set, and the packet of said all-zero word joint is exported as the OPUk data.
Wherein, after output OPUk data, said method further comprises:
Receiving the OPUk data, is the ODUk data with the OPUk data framing of receiving, is OTUk data and output with the ODUk data framing again.
A kind of data are separated the method for mapping, comprising:
When the 0th of the 0th byte in the OPUk data is 1, confirm that the OPUk data are effective data packets, and the output effective data packets;
Receive effective data packets, and the effective data packets of receiving is decoded into the FC data;
Wherein, said effective data packets is that the FC data are encoded in the following manner:
Per seven 9 FC digital coding are become an effective data packets that comprises eight 8 bytes; Wherein, The 0th of the 0th byte the is all the other 7 the K sign indicating numbers that are followed successively by each FC data of 1, the 0 byte in the effective data packets, and all the other bytes are followed successively by the valid data of each FC data.
Wherein, saidly the effective data packets of receiving be decoded into the FC data be specially:
Each decoded packet data that comprises eight 8 bytes is become seven 9 FC data.
Wherein, said method further comprises: when the 0th of the 0th byte in the OPUk data of receiving is 0, confirms that the OPUk data are the packet of all-zero word joint, and abandon the packet of all-zero word joint.
Wherein, before confirming that the OPUk data are the packet of effective data packets or all-zero word joint, said method further comprises: from the OTUk data, parse the ODUk data, from the ODUk data, parse the OPUk data again.
A kind of device of data map comprises: coding module, rate adapted module and control module; Wherein,
Coding module is used for the FC digital coding is become effective data packets, and the effective data packets behind the output encoder, and the 0th of the 0th byte the is 1 in the said effective data packets;
Wherein, saidly become effective data packets to be specially the FC digital coding:
Per seven 9 FC digital coding are become an effective data packets that comprises eight 8 bytes; Wherein, The 0th of the 0th byte the is all the other 7 the K sign indicating numbers that are followed successively by each FC data of 1, the 0 byte in the effective data packets, and all the other bytes are followed successively by the valid data of each FC data;
The rate adapted module is used to receive and cushion the packet that coding module is exported, and when all data packet numbers of buffering are not less than preset threshold value, the effective data packets of buffering is exported as the OPUk data; When all data packet numbers of buffering during, send fast spacing wave to control module less than preset threshold value;
Control module is used for after receiving fast spacing wave, transmits control signal to said rate adapted module;
Said rate adapted module also is used for according to the control signal of receiving the packet of all-zero word joint being set, and the packet of said all-zero word joint is exported as the OPUk data.
Further, said device comprises that also ODUk becomes frame module to become frame module with OTUk; Wherein,
ODUk becomes frame module, is used for the OPUk data of receiving velocity control module output, is ODUk data and output with the OPUk data framing of receiving;
OTUk becomes frame module, is used to receive the ODUk data that ODUk becomes frame module output, is OTUk data and output with the ODUk data framing of receiving.
A kind of data are separated the device of mapping, comprise Packet Filtering module and decoder module; Wherein,
The Packet Filtering module is used to receive the OPUk data, when the 0th of the 0th byte in the OPUk data of receiving is 0, confirms that the OPUk data are the packet of all-zero word joint, and abandons the packet of all-zero word joint; When the 0th of the 0th byte in the OPUk data of receiving is 1, confirm that the OPUk data are effective data packets, and the output effective data packets;
Decoder module is used to receive the effective data packets that the Packet Filtering module is exported, and the effective data packets of receiving is decoded into the FC data;
Wherein, said effective data packets is that the FC data are encoded in the following manner:
Per seven 9 FC digital coding are become an effective data packets that comprises eight 8 bytes; Wherein, The 0th of the 0th byte the is all the other 7 the K sign indicating numbers that are followed successively by each FC data of 1, the 0 byte in the effective data packets, and all the other bytes are followed successively by the valid data of each FC data.
Further, said device comprises that also OTUk separates frame module and ODUk separates frame module; Wherein,
OTUk separates frame module, is used for parsing ODUk data and output from the OTUk data of receiving;
ODUk separates frame module, is used to receive the ODUk data that OTUk separates frame module output, from the ODUk data of receiving, parses the OPUk data and exports to said Packet Filtering module.
Prior art uses GFP to encapsulate and during rate adapted; The process more complicated, resource consumption is bigger, and the present invention only need carry out coding and two steps of rate adapted just can realize the mapping of FC data to the OPUk data; Only need to carry out two steps of Packet Filtering and decoding and just can realize of the separate mapping of OPUk data to the FC data; Process is fairly simple, thereby has reduced the complexity that the FC system realizes, and has saved more resources.
Description of drawings
Fig. 1 is for FC data of the present invention and OPUk data map and separate the schematic flow sheet of the method for mapping;
Fig. 2 is the coding rule sketch map of FC data of the present invention;
Fig. 3 transmits the sketch map of data for two point-to-point FC devices interconnect of the present invention and through OTN;
Fig. 4 is the rough schematic of FC digital coding process of the present invention.
Embodiment
Below in conjunction with accompanying drawing technical scheme of the present invention is elaborated.
As shown in Figure 1, FC data of the present invention and OPUk data map may further comprise the steps with the method for separating mapping:
Cataloged procedure is specially: per seven 9 FC digital coding are become a packet that comprises eight 8 bytes; Wherein, The 0th of the 0th byte the is all the other 7 the K sign indicating numbers that are followed successively by each FC data of 1, the 0 byte in the packet, and all the other bytes are followed successively by the valid data of each FC data.
Among this paper, the packet of the all-zero word joint of mentioning for packet and the hereinafter distinguished here is so be called effective data packets with the packet of FC digital coding formation.
Specify the coding rule of FC data below in conjunction with Fig. 2.Each FC data is 9 (bit), wherein comprises 8 valid data and 1 K sign indicating number.Get seven FC data and be arranged in order, shown in Fig. 2 the first half, each square frame is represented 1, and each classifies FC data as, and the bottom of each row is K sign indicating numbers of FC data, the numbering of each FC data of uppermost digitized representation.During coding, the K sign indicating number of seven FC data is moved on to the foremost successively in order to form the 0th byte,, therefore fill 1 in that the 0th of the 0th byte is fixing, so just formed the 0th byte because the K sign indicating number has only seven; In addition, 8 valid data of each FC data constitute a byte, have so just formed an effective data packets that comprises eight 8 bytes, shown in Fig. 2 the latter half.
In addition, the 0th of the 0th byte the is 0 o'clock in the specified data bag, and such packet is called the packet of all-zero word joint, and this moment, whole packet all was the all-zero word joint.The packet of this all-zero word joint is used for filling the speed difference between FC and the OPUk, and it is also referred to as the idle data bag.Wherein, k has different values, as can being 0,1 or 2, and, the different different OPU speed grade of k value representative, this is a prior art, repeats no more at this.
In addition; Because the speed ratio of OPUk is very fast, the valid data that possibly occur cushioning encapsulate the empty situation of reading, and therefore preestablish threshold value; When the effective data packets quantity of buffering during less than this threshold value; Stop to export effective data packets, and the packet of output all-zero word joint, to guarantee correctly to export the OPUk data.Wherein, the size of threshold value confirms that by the speed difference of FC and OPUk the twice of threshold value then is the size of the buffering area of rate adapted module; In practical application, can adjust the size of threshold value according to actual needs.
Wherein, the OPUk data possibly be effective data packets, also possibly be the packet of all-zero word joint.
Wherein, be the ODUk data how and be prior art for the OTUk data how, so repeat no more at this with the ODUk data framing with the OPUk data framing.
In addition, step 101 to step 106 is in order on OTN, to transmit FC data, the operation of the required execution of transmitter side.
Step 107 receives the OTUk data, from the OTUk data of receiving, parses ODUk data and output.
Step 108 receives the ODUk data that parse, and from the ODUk data of receiving, parses OPUk data and output.
How the OTUk data being separated frame is ODUk data and how the ODUk data to be separated frame be prior art for the OPUk data, so repeat no more at this.
Step 109 receives the OPUk data parse, and judges whether the 0th of the 0th byte in these OPUk data is 0, if can know that then these OPUk data are the packet of all-zero word joint, then execution in step 110; Otherwise, can know that these OPUk data are effective data packets, then execution in step 111.
Step 110 abandons the packet of all-zero word joint, and finishes current flow process.
Step 112 receives effective data packets, and the effective data packets of receiving is decoded into the FC data, is about to each decoded packet data that comprises eight 8 bytes and becomes seven 9 FC data.
This decode procedure is the inverse process of cataloged procedure in the step 101, should be readily appreciated that how to decode in conjunction with Fig. 2 those skilled in the art, so be not described in detail in this.
Wherein, step 109 to step 112 has realized the separate mapping of OPUk data to the FC data.
Step 107 to step 112 be receiver side after receiving the OTUk data, the OTUk data transaction is become the operation of the required execution of FC data.
Fig. 3 transmits the sketch map of data for two point-to-point FC devices interconnect of the present invention and through OTN.Wherein, transmitter side equipment comprises: FC equipment, coding module, rate adapted module, control module, ODUk become frame module and OTUk to become frame module; Receiver side equipment comprises: OTUk separates frame module, ODUk separates frame module, Packet Filtering module, decoder module and FC equipment.Wherein, coding module, rate adapted module and control module constitute the device of realization FC data map to the OPUk data; Packet Filtering module and decoder module constitute realization OPUk data and separate the device that is mapped to the FC data.
Explain through the process of describing two point-to-point FC device transmission FC data how device shown in Figure 3 realizes the mapping between FC data and the OPUk data below.
FC equipment is used to export the FC data.Wherein, FC data comprise 8 valid data and 1 K sign indicating number.
Coding module is used to receive the FC data that FC equipment is exported, and the FC digital coding is become effective data packets, and the 0th of the 0th byte the is 1 in the effective data packets; Effective data packets behind the output encoder then.
The rate adapted module is used to receive and cushion the effective data packets that coding module is exported, when all effective data packets quantity of buffering are not less than preset threshold value, and the effective data packets of output buffering; When all effective data packets quantity of buffering during, send fast spacing wave to control module, and, the also packet of output all-zero word joint is set according to the control signal that control module is sent less than preset threshold value.
Wherein, fast spacing wave is a kind of status signal of rate adapted module, and all effective data packets quantity that are intended to rate adapted module buffering is described are less than preset threshold value.
The rate adapted module functions is to OPUk with the rate adapted of FC.
Control module is used for after the fast spacing wave of receiving, transmitting control signal to the rate adapted module.
The major function of control module is the rate adapted process of monitoring rate adapted module; When the effective data packets quantity of rate adapted module buffering during less than preset threshold value; Control module control rate adapted module stops to export effective data packets, and the packet of output all-zero word joint.
The packet of the effective data packets of rate adapted module output or all-zero word joint all is called the OPUk data.
Said process has been realized the mapping of FC data to the OPUk data.
ODUk becomes frame module, is used for the OPUk data of receiving velocity adaptation module output, is ODUk data and output with the OPUk data framing of receiving.
OTUk becomes frame module, is used to receive the ODUk data that ODUk becomes frame module output, is OTUk data and output with the ODUk data framing of receiving.
So far, transmitter side equipment has been accomplished the conversion of FC data to the OTUk data, like this, just can on OTN, transmit the FC data.
Receiver side equipment is described below how the OTUk data transaction of receiving is become the FC data.
OTUk separates frame module, is used to receive the OTUk data that OTUk becomes frame module output, from the OTUk data of receiving, parses ODUk data and output.
ODUk separates frame module, is used to receive the ODUk data that OTUk separates frame module output, from the ODUk data of receiving, parses OPUk data and output.
The Packet Filtering module; Be used to receive the OPUk data that ODUk separates frame module output, and judge whether the 0th of the 0th byte in the OPUk data of receiving is 0, if; Learn that then these OPUk data are the packet of all-zero word joint, and abandon the packet of this all-zero word joint; Otherwise, learn that these OPUk data are effective data packets, and the output effective data packets.
The Packet Filtering module functions is the packet that filters out all-zero word joint in the OPUk data, only effective data packets is exported to decoder module.Whether during practical implementation, the Packet Filtering module is made the packet border earlier, be 0 to judge whether this packet is the packet of all-zero word joint according to the 0th of the 0th byte in the packet then, if then abandon the packet of this all-zero word joint; Otherwise, output it to decoder module.
Decoder module is used to receive the effective data packets that the Packet Filtering module is exported, and the effective data packets of receiving is decoded into FC data and output.
Packet Filtering module and decoder module have been realized the separate mapping of OPUk data to the FC data.
FC equipment receives the FC data that decoder module is exported.
So far, accomplished the transmission of FC data between two point-to-point FC equipment.
Compared with prior art can find out by above technical scheme: in the prior art; Because the more complicated of GFP agreement own; Need to carry out the 64b/65b coding, and include the frame administrative mechanism, but also comprised multichannel processing protocol; When therefore adopting the mapping between GFP realization FC data and the OPUk data and separating mapping, it is bigger to take resource; And the present invention uses coding module and rate adapted module just can realize the mapping of FC data to the OPUk data; Use Packet Filtering module and decoder module just can realize of the separate mapping of OPUk data to the FC data; Implementation procedure is fairly simple, therefore can save the resource that takies.
Lift a specific embodiment below, describe how to realize the mapping between 2G FC data and the OPU1 data, so that those skilled in the art further understand the present invention.
Mapping implementation procedure between 2G FC data and the OPU1 data is following:
Step 201, FC equipment output 2G FC data.
Wherein, the FC data are 9, comprise 8 valid data and 1 K sign indicating number.
Step 202, coding module receive the 2G FC data of FC equipment output, and per seven 9 FC digital coding will receiving becomes an effective data packets that comprises eight 8 bytes, export effective data packets then; Wherein, in each effective data packets the 0th of the 0th byte the be 1.Cataloged procedure is referring to Fig. 2 and shown in Figure 4.
The effective data packets that step 203, rate adapted module receive and the buffering coding module is exported, and be responsible for the rate adapted of 2G FC is arrived OPU1.Because the speed of the speed ratio 2G FC of OPU1 is fast; The valid data that therefore possibly occur cushioning encapsulate reads empty situation, so the rate adapted module need be filled the speed difference between 2G FC and the OPU1 with the packet of all-zero word joint, detailed process is: whether all effective data packets quantity of judging buffering are less than preset threshold value; If; Then send fast spacing wave to control module, control module after receiving fast spacing wave, return control signal; The packet that the rate adapted module is provided with according to this control signal and the output all-zero word saves is to reach the purpose of rate adapted; Otherwise, the effective data packets of output buffering.
Step 204, ODU becomes the OPU1 data of frame module receiving velocity adaptation module output, and is the ODU1 data with the OPU1 data framing of receiving, exports the ODU1 data then.
Step 205, OTU becomes frame module to receive the ODU1 data that ODU becomes frame module output, and is the OTU1 data with the ODU1 data framing of receiving, sends the OTU1 data to receiver side equipment then.
Step 206, OTU separates frame module and receives the OTU1 data that OTU becomes frame module to send, and from the OTU1 data of receiving, parses the ODU1 data, exports the ODU1 data then.
Step 207, ODU separates frame module and receives the ODU1 data that OTU separates frame module output, and from the ODU1 data of receiving, parses the OPU1 data, exports the OPU1 data then.
Step 208; The Packet Filtering module receives the OPU1 data that ODU separates frame module output, and judges whether the 0th of the 0th byte in the OPU1 data of receiving is 0, if; Learn that then these OPU1 data are the packet of all-zero word joint, and abandon the packet of this all-zero word joint; Otherwise, learn that these OPU1 data are effective data packets, and the output effective data packets.
Step 209, decoder module receives the effective data packets of Packet Filtering module output, and the effective data packets of receiving is decoded into the FC data, specifically: each decoded packet data that comprises eight 8 bytes is become seven 9 FC data; Export the FC data then.
Step 210, FC equipment receives the FC data of decoder module output.
In the said process, transmitter side equipment has been realized 2G FC data map to the OPU1 data, and framing is the OTU1 data again, and through the OTN transmission, receiver side equipment has realized that separating frame from the OTU1 data goes out the OPU1 data, separates from the OPU1 data then and shines upon 2G FC data then.
In addition, the mapping between 1G FC data and the OPU0 data with separate mapping, and the mapping between 8G FC data and the OPU2 data with separate mapping, and the mapping between 2G FC data and the OPU1 data and separate mapping class seemingly is so be not described in detail in this.
The above is merely preferred embodiment of the present invention, is not to be used to limit protection scope of the present invention.
Claims (11)
1. the method for a data map is characterized in that, said method comprises:
Optical-fibre channel FC digital coding is become effective data packets, and the effective data packets behind the output encoder, the 0th of the 0th byte the is 1 in the said effective data packets;
Receive and the buffering effective data packets, when all effective data packets quantity of buffering are not less than preset threshold value, the effective data packets of buffering is exported as optical channel Payload Unit OPUk data;
Wherein, saidly become effective data packets to be specially the FC digital coding:
Per seven 9 FC digital coding are become an effective data packets that comprises eight 8 bytes; Wherein, The 0th of the 0th byte the is all the other 7 the K sign indicating numbers that are followed successively by each FC data of 1, the 0 byte in the effective data packets, and all the other bytes are followed successively by the valid data of each FC data.
2. the method for data map according to claim 1 is characterized in that, said method further comprises:
When all data packet numbers of buffering during, the packet of all-zero word joint is set, and the packet of said all-zero word joint is exported as the OPUk data less than said threshold value.
3. the method for data map according to claim 2 is characterized in that, after output OPUk data, said method further comprises:
Receiving the OPUk data, is Optical Channel Data Unit-k ODUk data with the OPUk data framing of receiving, is optical channel transmission unit OTUk data and output with the ODUk data framing again.
4. data are separated the method for mapping, it is characterized in that said method comprises:
When the 0th of the 0th byte in the optical channel Payload Unit OPUk data is 1, confirm that the OPUk data are effective data packets, and the output effective data packets;
Receive effective data packets, and the effective data packets of receiving is decoded into optical-fibre channel FC data;
Wherein, said effective data packets is that the FC data are encoded in the following manner:
Per seven 9 FC digital coding are become an effective data packets that comprises eight 8 bytes; Wherein, The 0th of the 0th byte the is all the other 7 the K sign indicating numbers that are followed successively by each FC data of 1, the 0 byte in the effective data packets, and all the other bytes are followed successively by the valid data of each FC data.
5. data according to claim 4 are separated the method for mapping, it is characterized in that, saidly the effective data packets of receiving is decoded into the FC data is specially:
Each decoded packet data that comprises eight 8 bytes is become seven 9 FC data.
6. separate the method for mapping according to claim 4 or 5 described data, it is characterized in that said method further comprises:
When the 0th of the 0th byte in the OPUk data of receiving is 0, confirms that the OPUk data are the packet of all-zero word joint, and abandon the packet of all-zero word joint.
7. data according to claim 6 are separated the method for mapping, it is characterized in that, before confirming that the OPUk data are the packet of effective data packets or all-zero word joint, said method further comprises:
From optical channel transmission unit OTUk data, parse Optical Channel Data Unit-k ODUk data, from the ODUk data, parse the OPUk data again.
8. the device of a data map is characterized in that, said device comprises: coding module, rate adapted module and control module; Wherein,
Coding module is used for optical-fibre channel FC digital coding is become effective data packets, and the effective data packets behind the output encoder, and the 0th of the 0th byte the is 1 in the said effective data packets;
Wherein, saidly become effective data packets to be specially the FC digital coding:
Per seven 9 FC digital coding are become an effective data packets that comprises eight 8 bytes; Wherein, The 0th of the 0th byte the is all the other 7 the K sign indicating numbers that are followed successively by each FC data of 1, the 0 byte in the effective data packets, and all the other bytes are followed successively by the valid data of each FC data;
The rate adapted module is used to receive and cushion the packet that coding module is exported, and when all data packet numbers of buffering are not less than preset threshold value, the effective data packets of buffering is exported as optical channel Payload Unit OPUk data; When all data packet numbers of buffering during, send fast spacing wave to control module less than preset threshold value;
Control module is used for after receiving fast spacing wave, transmits control signal to said rate adapted module;
Said rate adapted module also is used for according to the control signal of receiving the packet of all-zero word joint being set, and the packet of said all-zero word joint is exported as the OPUk data.
9. the device of data map according to claim 8 is characterized in that, said device comprises that also Optical Channel Data Unit-k ODUk becomes frame module to become frame module with optical channel transmission unit OTUk; Wherein,
ODUk becomes frame module, is used for the OPUk data of receiving velocity control module output, is ODUk data and output with the OPUk data framing of receiving;
OTUk becomes frame module, is used to receive the ODUk data that ODUk becomes frame module output, is OTUk data and output with the ODUk data framing of receiving.
10. data are separated the device of mapping, it is characterized in that, said device comprises Packet Filtering module and decoder module; Wherein,
The Packet Filtering module is used to receive optical channel Payload Unit OPUk data, when the 0th of the 0th byte in the OPUk data of receiving is 0, confirms that the OPUk data are the packet of all-zero word joint, and abandons the packet of all-zero word joint; When the 0th of the 0th byte in the OPUk data of receiving is 1, confirm that the OPUk data are effective data packets, and the output effective data packets;
Decoder module is used to receive the effective data packets that the Packet Filtering module is exported, and the effective data packets of receiving is decoded into optical-fibre channel FC data;
Wherein, said effective data packets is that the FC data are encoded in the following manner:
Per seven 9 FC digital coding are become an effective data packets that comprises eight 8 bytes; Wherein, The 0th of the 0th byte the is all the other 7 the K sign indicating numbers that are followed successively by each FC data of 1, the 0 byte in the effective data packets, and all the other bytes are followed successively by the valid data of each FC data.
11. data according to claim 10 are separated the device of mapping, it is characterized in that, said device comprises that also optical channel transmission unit OTUk separates frame module and Optical Channel Data Unit-k ODUk separates frame module; Wherein,
OTUk separates frame module, is used for parsing ODUk data and output from the OTUk data of receiving;
ODUk separates frame module, is used to receive the ODUk data that OTUk separates frame module output, from the ODUk data of receiving, parses the OPUk data and exports to said Packet Filtering module.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910241262 CN101710853B (en) | 2009-11-27 | 2009-11-27 | Methods and devices for data mapping and data de-mapping |
| PCT/CN2010/073634 WO2010148939A1 (en) | 2009-11-27 | 2010-06-07 | Method and device for data mapping, and method and device for data demapping |
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| CN 200910241262 CN101710853B (en) | 2009-11-27 | 2009-11-27 | Methods and devices for data mapping and data de-mapping |
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| CN101710853A CN101710853A (en) | 2010-05-19 |
| CN101710853B true CN101710853B (en) | 2012-12-19 |
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| CN101710853B (en) * | 2009-11-27 | 2012-12-19 | 中兴通讯股份有限公司 | Methods and devices for data mapping and data de-mapping |
| CN101986621A (en) * | 2010-11-08 | 2011-03-16 | 中兴通讯股份有限公司 | Data mapping method and device |
| CN112929765B (en) * | 2021-01-19 | 2023-05-12 | 赵晋玲 | Multi-service transmission method, system and storage medium based on optical transmission network |
| CN113850093B (en) * | 2021-09-08 | 2024-05-14 | 中国原子能科学研究院 | Positioning method, detection device and storage medium |
Citations (4)
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|---|---|---|---|---|
| CN1734986A (en) * | 2004-08-11 | 2006-02-15 | 华为技术有限公司 | Method for transmitting low-speed service signal in optical transport network and its device |
| CN101345700A (en) * | 2007-07-10 | 2009-01-14 | 华为技术有限公司 | Method and device for mapping Ethernet code block to optical transmission network transmission |
| WO2009083277A1 (en) * | 2008-01-03 | 2009-07-09 | Telefonaktiebolaget Lm Ericsson (Publ) | Demultiplexing and multiplexing method and apparatus |
| CN101547057A (en) * | 2008-03-28 | 2009-09-30 | 中兴通讯股份有限公司 | Method and device for processing services in optical transfer network |
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| US20030048813A1 (en) * | 2001-09-05 | 2003-03-13 | Optix Networks Inc. | Method for mapping and multiplexing constant bit rate signals into an optical transport network frame |
| CN1791057B (en) * | 2004-12-15 | 2011-06-15 | 华为技术有限公司 | Method for transmitting data service in OTN and its device |
| CN101710853B (en) * | 2009-11-27 | 2012-12-19 | 中兴通讯股份有限公司 | Methods and devices for data mapping and data de-mapping |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1734986A (en) * | 2004-08-11 | 2006-02-15 | 华为技术有限公司 | Method for transmitting low-speed service signal in optical transport network and its device |
| CN101345700A (en) * | 2007-07-10 | 2009-01-14 | 华为技术有限公司 | Method and device for mapping Ethernet code block to optical transmission network transmission |
| WO2009083277A1 (en) * | 2008-01-03 | 2009-07-09 | Telefonaktiebolaget Lm Ericsson (Publ) | Demultiplexing and multiplexing method and apparatus |
| CN101547057A (en) * | 2008-03-28 | 2009-09-30 | 中兴通讯股份有限公司 | Method and device for processing services in optical transfer network |
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| ITU.Interfaces for the Optical Transport Network (OTN) Amendment 3:100 Gbit/s support,one-stage multiplexing and other improvements.《ITU-T G.709/U.1331 Amendment 3》.2009,1-65. * |
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| WO2010148939A1 (en) | 2010-12-29 |
| CN101710853A (en) | 2010-05-19 |
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