CN111385062A

CN111385062A - Data transmission method, device, system and storage medium based on WDM

Info

Publication number: CN111385062A
Application number: CN202010216814.4A
Authority: CN
Inventors: 郑自永; 胡呈欣
Original assignee: Comba Telecom Systems China Ltd
Current assignee: Comba Network Systems Co Ltd
Priority date: 2020-03-25
Filing date: 2020-03-25
Publication date: 2020-07-07
Anticipated expiration: 2040-03-25
Also published as: WO2021190031A1; CN111385062B

Abstract

The embodiment of the invention discloses a data transmission method, a device, a system and a storage medium based on WDM. The WDM-based data transmission method comprises the following steps: obtaining effective data to be transmitted; generating redundant data corresponding to the valid data based on the valid data; and transmitting the effective data through at least one first optical channel, and transmitting the redundant data through at least one second optical channel, so that when the received effective data is incomplete, the lost effective data is recovered by using the redundant data. The data transmission method can reduce the probability of bad phenomena such as data loss and the like during data transmission.

Description

Data transmission method, device, system and storage medium based on WDM

Technical Field

The present application relates to the field of communications technologies, and in particular, to a method, an apparatus, a system, and a storage medium for data transmission based on WDM.

Background

In the field of traditional optical fiber communication, how to fully utilize optical fibers to improve the transmission capacity of the optical fibers is the most common technical requirement in the industry. Wavelength Division Multiplexing (WDM) technology is to combine two or more optical signals with different wavelengths together through a multiplexer and then transmit the signals in the same optical fiber. The receiving end separates the optical signals with different wavelengths through the optical wave demultiplexer and then shunts the optical signals to different receivers.

In practice, data loss often occurs during data transmission. This is because the conventional WDM-based data transmission apparatus cannot detect the transmitted data, that is, the transmitted data is lost, due to fading of the long-distance transmission optical channel during data transmission. Therefore, how to reduce or reduce the occurrence probability of bad phenomena such as data loss and the like, and improving the reliability of optical fiber transmission is a problem to be solved urgently at present.

Disclosure of Invention

At least one embodiment of the invention provides a data transmission method, a device, a system and a storage medium based on WDM, so as to reduce the probability of bad phenomena such as data loss during data transmission.

In a first aspect, an embodiment of the present invention provides a data transmission method based on WDM, which is applied to a transmitting end, and includes the following steps:

obtaining effective data to be transmitted;

generating redundant data corresponding to the valid data based on the valid data;

and transmitting the effective data through at least one first optical channel, and transmitting the redundant data through at least one second optical channel, so that when the received effective data is incomplete, the lost effective data is recovered by using the redundant data.

In a second aspect, an embodiment of the present invention provides a data transmission method based on WDM, which is applied to a receiving end, and includes the following steps:

receiving valid data transmitted over at least one first optical channel and receiving redundant data transmitted over at least one second optical channel; wherein the valid data corresponds to the redundant data;

judging whether the effective data received by the first optical channel is complete or not;

if not, judging whether the sum of the number of the first optical channels with the data loss and the number of the second optical channels with the data loss is larger than the number of the second optical channels;

if the sum of the number of the first optical channels with the data loss and the number of the second optical channels with the data loss is smaller than or equal to the number of the second optical channels, recovering the lost effective data through the received redundant data and the received effective data, and transmitting the recovered effective data and the received effective data to a next-stage data receiving device.

In a third aspect, an embodiment of the present invention provides a WDM-based data transmission apparatus, including:

the effective data acquisition module is used for acquiring effective data to be transmitted;

the redundant data generating module is used for generating redundant data corresponding to the effective data based on the effective data;

and the data transmission module is used for transmitting the effective data through at least one first optical channel and transmitting the redundant data through at least one second optical channel so as to recover the lost effective data by using the redundant data when the received effective data is incomplete.

In a fourth aspect, an embodiment of the present invention provides a WDM-based data transmission apparatus, including:

the data receiving module receives effective data transmitted through at least one first optical channel and receives redundant data transmitted through at least one second optical channel; wherein the valid data corresponds to the redundant data;

the first judgment module is used for judging whether the effective data received by the first optical channel is complete or not;

the second judging module is used for judging whether the sum of the number of the first optical channels with lost data and the number of the second optical channels with lost data is larger than the number of the second optical channels or not if the effective data received by the first optical channels is incomplete;

and if the sum of the number of the first optical channels with lost data and the number of the second optical channels with lost data is less than or equal to the number of the second optical channels, the data recovery module recovers the lost effective data through the received redundant data and the received effective data and transmits the recovered effective data and the received effective data to the next-stage data receiving device.

In a fifth aspect, an embodiment of the present invention provides a WDM-based data transmission system, including a data sending end, a data receiving end, and a transmission medium located between the data sending end and the data receiving end;

the transmission medium comprises at least one first optical channel and at least one second optical channel;

the data sending end is used for obtaining effective data to be transmitted; generating redundant data corresponding to the valid data based on the valid data; transmitting the useful data over at least one first optical channel and the redundant data over at least one second optical channel;

the data receiving end is used for receiving effective data transmitted through at least one first optical channel and receiving redundant data transmitted through at least one second optical channel; judging whether the effective data received by the first optical channel is complete or not; if not, judging whether the sum of the number of the first optical channels with the data loss and the number of the second optical channels with the data loss is larger than the number of the second optical channels; if the sum of the number of the first optical channels with the data loss and the number of the second optical channels with the data loss is smaller than or equal to the number of the second optical channels, recovering the lost effective data through the received redundant data and the received effective data, and transmitting the recovered effective data and the received effective data to a next-stage data receiving device.

In a sixth aspect, the embodiment of the present invention further provides a computer-readable storage medium, where the storage medium stores a computer program, and the computer program is configured to execute any one of the WDM-based data transmission methods provided in the embodiments of the present invention.

In a seventh aspect, an embodiment of the present invention further provides an electronic device, where the electronic device includes:

a processor;

a memory for storing the processor-executable instructions;

the processor is configured to read the executable instructions from the memory and execute the executable instructions to implement any one of the WDM-based data transmission methods provided by the embodiments of the present invention.

The embodiment of the invention transmits the effective data through at least one first optical channel and transmits the redundant data through at least one second optical channel, so that when the received effective data is incomplete, the lost effective data is recovered by using the redundant data, the fact is that different optical channels are used for respectively transmitting the effective data and the redundant data, wherein the redundant data is used as guarantee data of the effective data, when the lost data occurs, the received redundant data and the received effective data can be used for recovering the lost effective data, the problems that the reliability of the existing optical fiber transmission is low, the probability of the bad phenomena such as data loss is high are solved, the probability of the bad phenomena such as data loss is reduced, and the reliability of the optical fiber transmission is improved.

Drawings

The above and other objects, features and advantages of the present application will become more apparent by describing in more detail embodiments of the present application with reference to the attached drawings. The accompanying drawings are included to provide a further understanding of the embodiments of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. In the drawings, like reference numbers generally represent like parts or steps.

Fig. 1 is a flowchart of a WDM-based data transmission method according to an embodiment of the present invention;

fig. 2 is a flow chart of another WDM-based data transmission method according to an embodiment of the present invention;

fig. 3 is a flow chart of another WDM-based data transmission method according to an embodiment of the present invention;

FIG. 4 is a schematic diagram illustrating no data loss during data transmission using the data transmission method provided in FIG. 3;

FIG. 5 is a schematic diagram illustrating data loss during data transmission using the data transmission method provided in FIG. 3;

fig. 6 is a schematic structural diagram of a WDM-based data transmission apparatus according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of another WDM-based data transmission apparatus according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a WDM-based data transmission system according to an embodiment of the present invention;

fig. 9 is a schematic diagram of a hardware structure of an electronic device according to an embodiment of the present invention.

Detailed Description

Hereinafter, example embodiments according to the present application will be described in detail with reference to the accompanying drawings. It should be understood that the described embodiments are only some embodiments of the present application and not all embodiments of the present application, and that the present application is not limited by the example embodiments described herein.

As in the background art, in practice, a situation of missing data often occurs during data transmission. This is because, when data is transmitted, the conventional WDM data transmission apparatus cannot detect the transmitted data, that is, loss of the transmitted data, due to fading of the long-distance transmission optical channel. Therefore, how to reduce or reduce the occurrence probability of bad phenomena such as data loss and the like, and improving the reliability of optical fiber transmission is a problem to be solved urgently at present.

In view of the above, embodiments of the present invention provide a data transmission method based on WDM, where effective data is transmitted through at least one first optical channel, and redundant data is transmitted through at least one second optical channel, so that when the received effective data is incomplete, the lost effective data is recovered by using the redundant data, which is substantially that different optical channels are used to respectively transmit the effective data and the redundant data, where the redundant data is used as guarantee data of the effective data, and when data loss occurs, the received redundant data and the received effective data can be used to recover the lost effective data, thereby solving the problems of low reliability of current optical fiber transmission and high probability of occurrence of adverse phenomena such as data loss, and achieving the purposes of reducing the probability of occurrence of adverse phenomena such as data loss and improving the reliability of optical fiber transmission.

Fig. 1 is a flowchart of a WDM-based data transmission method according to an embodiment of the present invention. The WDM-based data transmission method can be applied to a transmitting end. Referring to fig. 1, the WDM-based data transmission method includes the steps of:

and S110, obtaining effective data to be transmitted.

And S120, generating redundant data corresponding to the effective data based on the effective data.

S130, transmitting valid data through at least one first optical channel, and transmitting redundant data through at least one second optical channel, so that when the received valid data is incomplete, the lost valid data is recovered by using the redundant data.

Redundant data is guarantee data for valid data. When the effective data is lost, the receiving end can recover the lost effective data by using the received effective data and the received redundant data, so that the complete and error-free effective data is finally obtained. Here, "valid data without error" should be understood as data completely identical to the valid data obtained when the transmitting end performs S110.

Optionally, the redundant data may be identical to the valid data, or may be data obtained by processing the valid data. The method of treatment is not limited in this application.

It is emphasized that in S130, the first optical channel is not multiplexed into the second optical channel. In other words, in practice, an optical fiber typically includes a plurality of optical channels. In the same optical fiber, the wavelength of any optical channel is different from the wavelengths of other optical channels. In performing S130, all optical channels in the optical fiber may be divided into two groups, i.e., a first group and a second group. All the optical channels in the first group are first optical channels, and all the optical channels in the second group are second optical channels. The essence of S130 is that the valid data and the redundant data are transmitted using optical channels belonging to different groups.

According to the technical scheme, the effective data are transmitted through the at least one first optical channel, the redundant data are transmitted through the at least one second optical channel, when the received effective data are incomplete, the lost effective data are recovered by the redundant data, the fact that the effective data and the redundant data are transmitted respectively through different optical channels is substantial, the redundant data serve as guarantee data of the effective data, when the lost data occur, the received redundant data and the received effective data can be used for recovering the lost effective data, the problems that the reliability of existing optical fiber transmission is low, the probability of bad phenomena such as data loss is high are solved, the probability of the bad phenomena such as data loss is reduced, and the reliability of the optical fiber transmission is improved.

In addition, compared with a scheme that the same optical channel is adopted and the effective data is transmitted first and then the redundant data is transmitted, or a scheme that the same optical channel is adopted and the redundant data is transmitted first and then the effective data is transmitted, in the technical scheme, the effective data and the redundant data are transmitted by adopting different optical channels, and the data transmission efficiency can be improved. In addition, because the effective data and the redundant data are transmitted by adopting different optical channels in the technical scheme, whether the transmitted data is the effective data or the redundant data can be distinguished through the adopted optical channels, and when data recovery or other processing operations are subsequently carried out, software does not need to be utilized to distinguish whether the received data is the effective data or the redundant data, so that the software implementation cost in a high layer (such as a data receiving device) can be simplified, and the service quality of an optical fiber communication network is improved.

It should be noted that, as mentioned above, all the optical channels in the optical fiber are divided into two groups, i.e., the first group and the second group. All the optical channels in the first group are first optical channels, and all the optical channels in the second group are second optical channels. The specific value of the number a of the first optical channels specifically included in the first group is not limited in the present application, as long as a is a positive integer greater than or equal to 1. Similarly, the application does not limit the specific value of the number b of the second optical channels included in the second group, as long as b is a positive integer greater than or equal to 1. In practice, it may be determined according to the need (such as the data amount of the data to be transmitted, or the reserved transmission time, etc.).

In addition, in practice, the number of bytes included in the valid data is often greater than the number of bytes in the first optical channel, so that when data transmission is actually performed, a single first optical channel often needs to transmit a plurality of bytes of the valid data. Similarly, in practice, the number of bytes included in the redundant data is often greater than the number of bytes in the second optical channel, so that in practice, a single second optical channel is often required to transmit multiple bytes of redundant data.

On the basis of the above technical solution, optionally, S120 may be replaced with: and generating redundant data corresponding to the effective data to be transmitted by utilizing a preset coding technology based on the effective data to be transmitted. The bytes of the produced redundant data can be reduced through a preset encoding technology, so that the byte number of the redundant data is smaller than that of the effective data. In practice, the number of total optical channels for the same optical fiber is limited. The arrangement is favorable for increasing the number of the optical channels which are divided into the first group and used as the first optical channel, and reducing the number of the optical channels which are divided into the second group and used as the second optical channel, so that the optical channels in the optical fiber are divided into more reasonable groups, and the data transmission efficiency is further improved.

The preset encoding technology may be a Forward Error Correction (FEC) technology. This arrangement can further increase the reliability of data communication by utilizing the characteristic that data recovery can be performed by the forward error correction code technique.

Fig. 2 is a flowchart of another WDM-based data transmission method according to an embodiment of the present invention. The WDM-based data transmission method can be applied to a receiving end. Referring to fig. 2, the WDM-based data transmission method includes the steps of:

s210, receiving valid data transmitted through at least one first optical channel, and receiving redundant data transmitted through at least one second optical channel.

Wherein the valid data corresponds to the redundant data.

It is emphasized that in S210, the first optical channel is not multiplexed into the second optical channel. In particular, in practice, an optical fiber usually includes a plurality of optical channels, and the wavelength of any optical channel is different from that of other optical channels in the same optical fiber. Alternatively, all optical channels in the fiber may be divided into two groups, a first group and a second group respectively. All the optical channels in the first group are first optical channels, and all the optical channels in the second group are second optical channels. The essence of S210 is that the valid data and the redundant data are transmitted using optical channels belonging to different groups.

S220, judging whether the effective data received through the first optical channel is complete or not, and if not, executing S230.

In practice, valid data is transmitted to the next data receiving device for the user to use, so the probability of missing valid data (or the integrity of valid data) will ultimately determine the user experience. The redundant data is used as guarantee data of effective data, and cannot be transmitted to a next-stage data receiving device or used by a user in the subsequent data transmission process. Therefore, whether the redundant data is complete or not has no influence on user experience, and the lost redundant data can not be recovered.

In this step, "valid data is complete" should be understood as that the receiving end can receive all bytes of valid data through each first optical channel, that is, the valid data received by the receiving end through each first optical channel is completely consistent with the valid data sent by the sending end through the first optical channel.

S230, judging whether the sum of the number of the first optical channels with the lost data and the number of the second optical channels with the lost data is larger than the number of the second optical channels, and if not, executing S240.

And S240, recovering the lost effective data through the received redundant data and the received effective data, and transmitting the recovered effective data and the received effective data to a next-stage data receiving device.

The essence of the above technical solution is that after receiving the valid data and the redundant data, it is first determined whether the valid data is complete, that is, whether there is a data loss condition in the valid data, and if there is a data loss condition, it is determined whether the lost valid data is sufficiently recovered based on the currently received redundant data and the currently received valid data. If the effective data is enough to be recovered, the lost effective data is recovered to obtain complete and error-free (i.e. completely consistent with the effective data obtained by the sending end) effective data.

By the technical scheme, the problems that the reliability of the existing optical fiber transmission is low, and the probability of bad phenomena such as data loss is high are solved, so that the probability of bad phenomena such as data loss is reduced, and the reliability of the optical fiber transmission is improved.

In addition, compared with a scheme that the same optical channel is adopted and the effective data is transmitted first and then the redundant data is transmitted, or a scheme that the same optical channel is adopted and the redundant data is transmitted first and then the effective data is transmitted, in the technical scheme, the effective data and the redundant data are transmitted by adopting different optical channels, and the data transmission efficiency can be improved. In addition, because the effective data and the redundant data are transmitted by adopting different optical channels in the technical scheme, whether the transmitted data is the effective data or the redundant data can be distinguished through the adopted optical channels, and when data recovery or other processing operations are subsequently carried out, whether the received data is the effective data or the redundant data does not need to be distinguished by software, so that the software implementation cost in a high layer (such as a data receiving device) can be simplified, and the service quality of an optical fiber communication network is improved.

On the basis of the above technical solution, optionally, the redundant data is generated based on the valid data by using a preset coding technique. The bytes of the produced redundant data can be reduced through a preset encoding technology, so that the byte number of the redundant data is smaller than that of the effective data. In practice, the number of total optical channels for the same optical fiber is limited. The arrangement is favorable for increasing the number of the optical channels which are divided into the first group and used as the first optical channel, and reducing the number of the optical channels which are divided into the second group and used as the second optical channel, so that the optical channels in the optical fiber are divided into more reasonable groups, and the data transmission efficiency is further improved.

Further, if the redundant data is generated based on the valid data by using a predetermined encoding technique. In S240, the lost valid data is recovered from the received redundant data and the received valid data, including the lost valid data by a decoding technique corresponding to a preset encoding technique, the received redundant data, and the received valid data. Namely, when S240 is executed, the method includes: decoding the received redundant data by using a decoding technology corresponding to a preset coding technology to obtain decoded data; the lost valid data is recovered by the decoded data and the received valid data,

and if the sum of the number of the first optical channels with the data loss and the number of the second optical channels with the data loss is greater than the number of the second optical channels, transmitting the received effective data to a next-stage data receiving device. The reason for this is that the total number of optical channels in which data is lost is too large to exceed the limit of recoverability, and the lost effective data cannot be recovered without performing a recovery attempt.

Fig. 3 is a flowchart of a WDM-based data transmission method according to an embodiment of the present invention. Fig. 4 is a schematic diagram illustrating that no data is lost when data is transmitted by using the data transmission method provided in fig. 3. Fig. 5 is a schematic diagram illustrating data loss in data transmission by the data transmission method provided in fig. 3. The WDM-based data transmission method is explained in detail with reference to fig. 3 to 5.

Referring to fig. 3, the WDM-based data transmission method includes the steps of:

s310, obtaining effective data to be transmitted.

Optionally, the valid data to be transmitted has M bytes.

And S320, based on the effective data to be transmitted, generating redundant data corresponding to the effective data to be transmitted by using a preset coding technology.

Optionally, the N redundant bytes are generated based on encoding the M bytes with a forward error correction code technique.

S330, transmitting valid data through at least one first optical channel, and transmitting redundant data through at least one second optical channel.

S340, receiving the valid data transmitted through the first optical channel, and receiving the redundant data transmitted through the second optical channel.

Referring to fig. 4, valid data includes byte 1 and byte 2. Byte 3 is redundant data based on valid data. Optical channel a is the first optical channel used to transmit byte 1. Optical channel b is the first optical channel used to transmit byte 2. Optical channel c is the second optical channel used to transmit byte 3. When no data is lost, all three optical channels can correctly transmit data, that is, byte 1 can be received through optical channel a, and the received byte 1 is identical to byte 1 before transmission. Similarly, byte 2 can be received via optical channel b, and received byte 2 is identical to byte 2 before transmission. Byte 3 can be received via optical channel c and received byte 3 is identical to byte 3 before transmission.

Referring to fig. 5, however, in practice, due to the fading of the optical channel b due to the long distance transmission, byte 2 transmitted through the optical channel b is lost during the transmission, and eventually, byte 2 cannot be received from the optical channel b. In this case, only byte 1 transmitted via optical channel a and byte 3 transmitted via optical channel c can be received during this step.

And S350, judging whether the valid data received through the first optical channel is complete. If yes, executing S360; otherwise, S370 is performed.

If the valid data received by the first optical channels are complete, it indicates that no fading occurs in each of the first optical channels. The valid data received in S340 completely matches the valid data acquired in S310, and S360 is executed without data recovery.

If the valid data received by the first optical channel is not complete, indicating that there is a faded first optical channel, S370 needs to be performed to further determine whether recovery is possible.

And S360, transmitting the received effective data to a next-stage data receiving device.

S370, judging whether the sum of the number of the first optical channels with the missing data and the number of the second optical channels with the missing data is larger than the number of the second optical channels. If yes, executing S360; if not, go to S380.

Exemplarily, in fig. 5, the optical channel b is a first optical channel for data loss.

The essence of this step is to determine the size relationship between the total number of optical channels in which data is lost and the number of second optical channels, and then determine whether data recovery is possible based on the size relationship. If data recovery is possible, S380 is executed. If data recovery is not possible, S360 is executed.

It should be noted that, in practice, the optical channel in which the error occurs may be the first optical channel or the second optical channel. In this step, when the total number of optical channels with error codes is determined, it is not distinguished whether the optical channel with error codes is a first optical channel or a second optical channel.

And S380, recovering the lost effective data through the received redundant data and the received effective data, and transmitting the recovered effective data and the received effective data to a next-stage data receiving device.

With continued reference to fig. 5, optionally, the received redundant data is decoded based on a forward error correction code technique to obtain decoded data. The lost valid data is then recovered using the decoded data and the received valid data.

According to the technical scheme, a forward error correction code technology is fused, a plurality of paths of optical channels are selected, and M + N optical channels are respectively used for transmitting effective data and redundant data, so that the functions of guaranteeing transmission and error code loss compensation are realized in the optical module. Therefore, the high-level guarantee function is simplified, and the transmission service quality of the optical network is improved.

The embodiment of the invention also provides a data transmission device based on the WDM. Fig. 6 is a schematic structural diagram of a WDM-based data transmission apparatus according to an embodiment of the present invention. Referring to fig. 6, the WDM-based data transmission apparatus includes: a valid data acquisition module 510, a redundant data generation module 520, and a data transmission module 530.

A valid data obtaining module 510, configured to obtain valid data to be transmitted;

a redundant data generating module 520, configured to generate redundant data corresponding to the valid data based on the valid data;

a data transmission module 530, configured to transmit the valid data through at least one first optical channel and transmit the redundant data through at least one second optical channel, so that when the received valid data is incomplete, the lost valid data is recovered by using the redundant data.

Further, the redundant data generating module 520 is configured to:

and based on the effective data to be transmitted, generating redundant data corresponding to the effective data to be transmitted by utilizing a preset coding technology.

The embodiment of the invention also provides another WDM-based data transmission device. Fig. 7 is a schematic structural diagram of another WDM-based data transmission apparatus according to an embodiment of the present invention. Referring to fig. 7, the WDM-based data transmission apparatus includes: a data receiving module 610, a first judging module 620, a second judging module 630 and a data restoring module 640.

A data receiving module 610 for receiving valid data transmitted through at least one first optical channel and receiving redundant data transmitted through at least one second optical channel; wherein the valid data corresponds to the redundant data;

a first determining module 620, configured to determine whether valid data received through the first optical channel is complete;

a second determining module 630, configured to determine, if the valid data received through the first optical channel is incomplete, whether a sum of the number of first optical channels in which data is lost and the number of second optical channels in which data is lost is greater than the number of second optical channels;

and if the sum of the number of the first optical channels in which the data is lost and the number of the second optical channels in which the data is lost is less than or equal to the number of the second optical channels, the data recovery module 640 recovers the lost effective data through the received redundant data and the received effective data, and transmits the recovered effective data and the received effective data to the next-stage data receiving device.

Further, the redundant data is generated based on the valid data by using a preset coding technique.

Further, the data recovery module 640 is further configured to transmit the received valid data to the next stage of data receiving device if the sum of the number of the first optical channels where the data loss occurs and the number of the second optical channels where the data loss occurs is greater than the number of the second optical channels.

The WDM-based data transmission device provided by the embodiment of the invention can execute the WDM data transmission method provided by any embodiment of the invention, and has corresponding functional modules and beneficial effects of the execution method.

The embodiment of the invention also provides a WDM-based data transmission system. Fig. 8 is a schematic structural diagram of a WDM-based data transmission system according to an embodiment of the present invention. Referring to fig. 8, the WDM-based data transmission system includes a data transmitting end 710, a data receiving end 720, and a transmission medium 730 located between the data transmitting end 710 and the data receiving end 720;

the transmission medium 730 comprises at least one first optical channel and at least one second optical channel;

the data sending end 710 is configured to obtain valid data to be transmitted; generating redundant data corresponding to the valid data based on the valid data; transmitting the useful data over at least one first optical channel and the redundant data over at least one second optical channel;

the data receiving end 720 is configured to receive valid data transmitted through at least one first optical channel and receive redundant data transmitted through at least one second optical channel; judging whether the effective data received by the first optical channel is complete or not; if not, judging whether the sum of the number of the first optical channels with the data loss and the number of the second optical channels with the data loss is larger than the number of the second optical channels; if the sum of the number of the first optical channels with the data loss and the number of the second optical channels with the data loss is smaller than or equal to the number of the second optical channels, recovering the lost effective data through the received redundant data and the received effective data, and transmitting the recovered effective data and the received effective data to a next-stage data receiving device.

Alternatively, referring to fig. 8, the data transmitting end 610 refers to the WDM-based data transmission apparatus arrangement provided in fig. 6 of the present invention. The data receiving end 620 refers to the WDM-based data transmission apparatus setup provided in fig. 7 of the present invention, and will not be described herein.

The WDM-based data transmission system provided by the embodiment of the invention can execute the WDM data transmission method provided by any embodiment of the invention, and has corresponding functional modules and beneficial effects of the execution method.

The embodiment of the present invention further provides a computer-readable storage medium, where the storage medium stores a computer program, and the computer program is used to execute the WDM-based data transmission method provided in the embodiment of the present application.

The computer program may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, C + +, or the like, and conventional procedural programming languages, such as the "C" programming language or similar programming languages, to carry out the operations of embodiments of the present application. The program code may execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device and partly on a remote computing device, or entirely on the remote computing device or server.

The computer-readable storage medium may take any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. A readable storage medium may include, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples (a non-exhaustive list) of the readable storage medium include: an electrical connection having one or more wires, a portable disk, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

The embodiment of the invention also provides the electronic equipment. Fig. 9 is a schematic diagram of a hardware structure of an electronic device according to an embodiment of the present invention, and as shown in fig. 9, the electronic device includes:

one or more processors 501, one processor 501 being exemplified in fig. 9;

a memory 502;

the electronic device may further include: an input device 503 and an output device 504.

The processor 501, the memory 502, the input device 503 and the output device 504 in the electronic device may be connected by a bus or other means, and fig. 9 illustrates the connection by the bus as an example.

The memory 502, which is a non-transitory computer-readable storage medium, may be used to store software programs, computer-executable programs, and modules, such as program instructions/modules corresponding to the WDM-based data transmission method in the embodiments of the present invention. The processor 501 executes various functional applications of the server and data processing, i.e., implementing the WDM-based data transmission method of the above-described method embodiment, by running software programs, instructions, and modules stored in the memory 502.

The memory 502 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to use of the electronic device, and the like. Further, the memory 502 may include high speed random access memory, and may also include non-transitory memory, such as at least one magnetic disk storage device, flash memory device, or other non-transitory solid state storage device. In some embodiments, memory 502 may optionally include memory located remotely from processor 501, which may be connected to the terminal device via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.

The input device 503 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the electronic apparatus. The output device 504 may include a display device such as a display screen.

The foregoing describes the general principles of the present application in conjunction with specific embodiments, however, it is noted that the advantages, effects, etc. mentioned in the present application are merely examples and are not limiting, and they should not be considered essential to the various embodiments of the present application. Furthermore, the foregoing detailed description of the invention is provided for the purpose of illustration and understanding only, and is not intended to be limiting, since the detailed description is not intended to be exhaustive or to limit the invention to the precise form disclosed.

The block diagrams of devices, apparatuses, systems referred to in this application are only given as illustrative examples and are not intended to require or imply that the connections, arrangements, configurations, etc. must be made in the manner shown in the block diagrams. These devices, apparatuses, devices, systems may be connected, arranged, configured in any manner, as will be appreciated by those skilled in the art. Words such as "including," "comprising," "having," and the like are open-ended words that mean "including, but not limited to," and are used interchangeably therewith. The words "or" and "as used herein mean, and are used interchangeably with, the word" and/or, "unless the context clearly dictates otherwise. The word "such as" is used herein to mean, and is used interchangeably with, the phrase "such as but not limited to".

It should also be noted that in the devices, apparatuses, and methods of the present application, the components or steps may be decomposed and/or recombined. These decompositions and/or recombinations are to be considered as equivalents of the present application.

The previous description of the inventive aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other aspects without departing from the scope of the application. Thus, the present application is not intended to be limited to the aspects shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

The foregoing description has been presented for purposes of illustration and description. Furthermore, this description is not intended to limit embodiments of the application to the form of the invention herein disclosed. While a number of example aspects and embodiments have been discussed above, those of skill in the art will recognize certain variations, modifications, alterations, additions and sub-combinations thereof.

Claims

1. A data transmission method based on WDM is applied to a transmitting end, and is characterized by comprising the following steps:

obtaining effective data to be transmitted;

2. The data transmission method according to claim 1, wherein generating redundant data corresponding to the valid data based on the valid data comprises: and based on the effective data to be transmitted, generating redundant data corresponding to the effective data to be transmitted by utilizing a preset coding technology.

3. A data transmission method based on WDM is applied to a receiving end and is characterized by comprising the following steps:

4. The data transmission method according to claim 3,

the redundant data is generated based on the valid data using a predetermined encoding technique.

5. The data transmission method according to claim 3,

and if the sum of the number of the first optical channels with the data loss and the number of the second optical channels with the data loss is larger than the number of the second optical channels, transmitting the received effective data to a next-stage data receiving device.

6. A WDM-based data transmission apparatus, comprising:

7. A WDM-based data transmission apparatus, comprising:

8. A WDM-based data transmission system is characterized in that the system comprises a data transmitting end, a data receiving end and a transmission medium between the data transmitting end and the data receiving end;

9. A computer-readable storage medium, which stores a computer program for executing the data transmission method according to any one of claims 1 to 5.

10. An electronic device, the electronic device comprising:

a processor;

a memory for storing the processor-executable instructions;

the processor is used for reading the executable instructions from the memory and executing the instructions to realize the data transmission method of any one of the claims 1 to 5.