CN112713963A - Signal nondestructive protection method and device, signal receiver and readable storage medium - Google Patents
Signal nondestructive protection method and device, signal receiver and readable storage medium Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 39
- 230000005540 biological transmission Effects 0.000 claims abstract description 141
- 238000009432 framing Methods 0.000 claims abstract description 20
- 238000004590 computer program Methods 0.000 claims description 11
- 230000001066 destructive effect Effects 0.000 claims description 9
- 238000000547 structure data Methods 0.000 claims description 9
- 230000003139 buffering effect Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 12
- 238000004891 communication Methods 0.000 description 5
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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
- H04L1/0045—Arrangements at the receiver end
- H04L1/0046—Code rate detection or code type detection
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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
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0061—Error detection codes
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Abstract
The application relates to a signal nondestructive protection method, a signal nondestructive protection device, a signal receiver and a readable storage medium, wherein the method comprises the following steps: receiving signal data in two transmission links; intercepting a sequence with a preset length from the signal data in one transmission link, and searching whether the same sequence exists in the signal data in the other transmission link; if not, the signal data in the two transmission links need to be realigned. The method and the device realize the alignment of the data of different transmission links under the condition of completely transmitting the service data of the user side, thereby realizing the nondestructive protection switching of various framing signals and non-framing signals of the user side.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to a signal lossless protection method, a signal lossless protection device, a signal receiver, and a readable storage medium.
Background
The framer is one of the key modules at the transmitting end of the traditional service protection design, and is generally used for identifying and processing the service at the client side. One of the operation modes is that the service of the client side is encapsulated into a standard or private frame structure, and information or service alarm information for aligning the service at the receiving end is inserted into the frame structure; another way of operation is to identify the frame structure of the client side service and insert information for the receiver side alignment service or service alarm information in the idle bytes. Doing so can present the following problems: the content of the client side service data is modified; the transmission link bandwidth is increased.
Disclosure of Invention
In order to realize lossless switching of services and enable a transmission channel not to increase bandwidth, the application provides a signal lossless protection method, a signal lossless protection device, a signal receiver and a readable storage medium.
In a first aspect of the present application, there is provided a signal lossless protection method, including: receiving signal data in two transmission links; intercepting a sequence with a preset length from the signal data in one transmission link, and searching whether the same sequence exists in the signal data in the other transmission link; if not, the signal data in the two transmission links need to be realigned.
Preferably, the intercepting a sequence with a preset length from the signal data in one of the transmission links includes: and when the signal data is data with a non-framing structure, intercepting a BIT sequence with a preset length from the signal data in one transmission link.
Preferably, the intercepting a sequence with a preset length from the signal data in one of the transmission links includes: and when the signal data is framing structure data, intercepting a CRC sequence with a preset length in the signal data in one transmission link.
Preferably, the method further comprises: determining whether the signal data in the two transmission links needs to be aligned again after they are aligned: reading the signal data from both transmission links simultaneously; if the signal data in the two transmission links do not reach the preset time at the same time, the signal data in the two transmission links need to be realigned.
Preferably, the method further comprises: and transmitting the signal data in the two aligned transmission links to a buffer module for buffering.
In a second aspect of the present application, there is provided a signal non-destructive protection apparatus comprising: the receiving module is used for receiving signal data in the two transmission links; the searching module is used for intercepting a sequence with a preset length from the signal data in one transmission link and searching whether the same sequence exists in the signal data in the other transmission link; and the aligning module is used for realigning the signal data in the two transmission links when the signal data in the other transmission link does not have a sequence with a preset length intercepted in one transmission link.
Preferably, the search module is specifically configured to: and when the signal data is data with a non-framing structure, intercepting a BIT sequence with a preset length from the signal data in one transmission link.
Preferably, the search module is specifically configured to: and when the signal data is framing structure data, intercepting a CRC sequence with a preset length in the signal data in one transmission link.
In a third aspect of the present application, there is provided a signal receiver comprising a memory having stored thereon a computer program and a processor implementing the method according to any of the first aspects when the program is executed.
In a fourth aspect of the present application, a computer-readable storage medium is provided, on which a computer program is stored which, when being executed by a processor, carries out the method according to any one of the first aspect.
In the signal lossless protection method, the signal lossless protection device, the signal receiver and the readable storage medium provided in the embodiments of the present application, by receiving signal data in two transmission links, intercepting a sequence of a preset length from the signal data in one of the transmission links, searching whether the same sequence exists in the signal data in the other transmission link, if so, indicating that the signal data in the two transmission links are aligned, and if not, indicating that the signal data in the two transmission links are not aligned, the signal data in the other transmission links need to be realigned, thereby implementing data alignment of different transmission links under the condition of completely transmitting user side service data, and further implementing lossless protection switching of various framed signals and non-framed signals at the user side.
Drawings
Fig. 1 shows a schematic diagram of a traffic protection design in the related art.
Fig. 2 shows a traffic protection design schematic according to an embodiment of the application.
Fig. 3 shows a flow diagram of a method of signal lossless protection according to an embodiment of the application.
Fig. 4 shows a block diagram of a signal non-destructive protection apparatus according to an embodiment of the present application.
Fig. 5 shows a schematic block diagram of a signal receiving processor suitable for implementing embodiments of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Fig. 1 shows a schematic diagram of a traffic protection design in the related art.
Referring to fig. 1, a traffic protection design in the related art includes a transmitting side and a receiving side, where the transmitting side includes a framer and a 1+1 generator, and the receiving side includes a deframer, a buffer and a 1+1 selector.
The framer is one of the key modules of the sending end of the traditional service protection design, and is generally used for identifying and processing services at the client side. One of the operation modes is that the service of the client side is encapsulated into a standard or private frame structure, and information or service alarm information for aligning the service at the receiving end is inserted into the frame structure; another method is to identify the frame structure of the client side service and insert information for the receiving side alignment service or service alarm information in the idle bytes.
And the 1+1 generator is used for sending the encapsulated service data into the main transmission link and the standby transmission link through the 1+1 generator.
And the de-framer is used for analyzing the frame structure of the transmission link signal received by the receiving end to obtain a frame structure signal for alignment and service alarm information for judging the channel quality.
And the buffer is used for storing the aligned transmission link data.
And the 1+1 receiver switches paths according to the extracted alarm information for judging the signal quality, and selects the main transmission link and the standby transmission link to receive the client data.
The following problems mainly exist in the adoption of the service protection design: firstly, the content of the client side service data is modified, and secondly, the bandwidth of a transmission link is increased.
In order to solve the above technical problem, the present application provides a signal lossless protection method, a signal lossless protection device, a signal receiver and a readable storage medium.
Fig. 2 shows a traffic protection design schematic according to an embodiment of the application.
Referring to fig. 2, a service protection design provided in the embodiment of the present application includes a transmitting side and a receiving side, where the transmitting side includes a 1+1 generator, and the receiving side includes a signal receiving processor, a buffer, and a 1+1 receiver.
Compared with the service protection design in the related art, the service protection design provided by the embodiment of the application only needs to select one 1+1 generator for future service transparent transmission and double transmission at the user side at the transmitting side, does not need to analyze signals, and does not need to insert sequence information for alignment into a signal frame structure.
On the receiving side, in the service protection design provided by the embodiment of the present application, the signal receiving processor is used to replace a deframer in the related art, and the signal receiving processor can implement data receiving alignment of two different transmission link transmission channels.
In a specific example, for data with a non-framing structure, the signal receiving processor can intercept a BIT sequence with a sufficient length in one of the transmission links (e.g., a main transmission link), search for whether the same BIT sequence exists in the other transmission link (e.g., a backup transmission link), and if the same BIT sequence is found in the other transmission link, indicate that data in the two transmission links are aligned, and then send the aligned data to the buffer module for buffering.
In order to further verify whether the data in the two transmission links are aligned, after the data in the two transmission links are aligned through the BIT sequence, the data can be simultaneously read from the two transmission links for comparison, when the data of the two transmission links simultaneously arrive at N time, the data in the two transmission links are aligned, and when the data of the two transmission links do not simultaneously arrive at N time, the data in the two transmission links are not aligned, and the data in the two transmission links need to be aligned again.
In another specific example, for the data of the framing structure, the signal receiving processor can align the data in the two transmission links through the framing structure information. For example, 32 bytes per frame of framed E1 data is calculated as a CRC check, a CRC sequence with M length is truncated in one of the transmission links (e.g., the main transmission link), and a CRC sequence calculated in the other transmission link (e.g., the backup transmission link) is searched for, which indicates that the data in the two transmission links are aligned if the same CRC sequence can be found, and indicates that the data in the two transmission links are not aligned if the same CRC sequence is not found, and at this time, the data in the two transmission links need to be realigned.
To further verify whether the data in the two transmission links are aligned, the same method as in the previous example can be used. It should be noted that the functional roles of the 1+1 generator, the buffer module, and the 1+1 receiver in the service protection design provided in the embodiment of the present application are the same as those in the related art, and are not described again.
The technical solution of the present application is further described below with reference to an embodiment of the method.
Fig. 3 shows a flow diagram of a method of signal lossless protection according to an embodiment of the application. In some embodiments, the signal lossless protection method may be performed by the signal reception processor in fig. 2.
Referring to fig. 3, the signal non-destructive protection method includes the steps of:
step 310, receiving signal data in two transmission links.
In this embodiment, the signal data may be non-framed data or framed data. The non-framed data is directly sent to the main transmission link and the standby transmission link by the 1+1 generator without being packaged by a framer, and then is transmitted to the signal receiving processor. The framing data is directly sent into two transmission links by the 1+1 generator and then transmitted to the signal receiving processor.
In step 320, a sequence with a preset length is intercepted from the signal data in one of the transmission links, and the signal data in the other transmission link is searched for whether the same sequence exists.
In this embodiment, after receiving the signal data in the two transmission links, the signal receiving processor needs to perform an alignment operation. Specifically, the signal receiving processor intercepts a sequence with a preset length from the signal data in one of the transmission links, then searches whether the same sequence exists in the signal data in the other transmission link, and if the same sequence exists, the signal data in the two transmission links are aligned, and the alignment operation is not needed. If there is no identical sequence indicating that the signal data in the two transmission links are not aligned, step 330 is performed.
It should be noted that the length of the truncated sequence can be selected by a person skilled in the art, as long as the length of the truncated sequence is long enough to accurately determine whether the truncated sequence is aligned.
In some embodiments, when the signal data is non-framing structure data, since the signal data is not encapsulated as frame structure data, a BIT sequence with a preset length may be truncated from the signal data in one of the transmission links, and then the signal data in the other transmission link may be searched for whether the same sequence exists. If the same BIT sequence exists in the signal data in the other transmission link, the signal data in the two transmission links are aligned; if the same BIT sequence does not exist in the signal data in the other transmission link, the signal data in the two transmission links are not aligned, and realignment is needed.
In other embodiments, when the signal data is framing structure data, since the signal data has been encapsulated into frame structure data, a CRC sequence of a preset length may be truncated in the signal data in one of the transmission links, and then a CRC sequence calculated in the other transmission link may be searched for the presence of the same CRC sequence. If the same CRC sequence exists in the other transmission link, the signal data in the two transmission links are aligned; if the same CRC sequence does not exist in the other transmission link, the signal data in the two transmission links are not aligned, and the realignment is needed.
In some embodiments, to further determine whether the signal data in the two transmission links are already aligned, it may be determined again whether they are aligned after they are aligned. Specifically, the signal data can be read from the two transmission links at the same time, and if the signal data in the two transmission links do not reach the preset time at the same time, it indicates that the signal data in the two transmission links are not aligned, and the signal data in the two transmission links need to be realigned, so that it can be further determined that the signal data in the two transmission links are aligned.
In step 330, the signal data in the two transmission links are realigned.
For example, if the signal data in the two transmission links are not aligned and need to be realigned, a sequence with a preset length may be intercepted in one of the transmission links, and a sequence identical to the intercepted sequence may be searched in the other transmission link until the signal data in the next two transmission links are aligned.
In some embodiments, the signal non-destructive protection method further comprises the steps of:
and transmitting the signal data in the two aligned transmission links to a buffer module for buffering.
According to the embodiment of the application, by receiving the signal data in the two transmission links, intercepting the sequence with the preset length from the signal data in one transmission link, searching whether the same sequence exists in the signal data in the other transmission link, if so, indicating that the signal data in the two transmission links are aligned, and if not, indicating that the signal data in the two transmission links are not aligned, the signal data in the two transmission links need to be realigned, the data alignment of different transmission links is realized under the condition of completely transmitting the service data of the user side, and further, the lossless protection switching of various framing signals and non-framing signals of the user side is realized.
It should be noted that, for simplicity of description, the above-mentioned method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present application is not limited by the order of acts described, as some steps may occur in other orders or concurrently depending on the application. Further, those skilled in the art should also appreciate that the embodiments described in the specification are exemplary embodiments and that the acts and modules referred to are not necessarily required in this application.
The above is a description of method embodiments, and the embodiments of the present application are further described below by way of apparatus embodiments.
Fig. 4 shows a block diagram of a signal non-destructive protection apparatus according to an embodiment of the present application. In some embodiments, the signal non-destructive protection device may be included in the signal receiving processor of fig. 2, or implemented as the signal receiving processor of fig. 2.
Referring to fig. 4, the signal non-destructive protection apparatus includes:
a receiving module 410, configured to receive signal data in two transmission links.
And a searching module 420, configured to intercept a sequence with a preset length in the signal data in one of the transmission links, and search for whether the same sequence exists in the signal data in the other transmission link.
And an alignment module 430, configured to realign the signal data in the two transmission links when the sequence with the preset length intercepted in one transmission link does not exist in the signal data in the other transmission link.
In some embodiments, the search module 420 is specifically configured to: and when the signal data is data with a non-framing structure, intercepting a BIT sequence with a preset length in the signal data in one transmission link.
In some embodiments, the search module 420 is specifically configured to: and when the signal data is the framing structure data, intercepting a CRC sequence with a preset length in the signal data in one transmission link.
It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working process of the described module may refer to the corresponding process in the foregoing method embodiment, and is not described herein again.
Fig. 5 shows a schematic block diagram of a signal receiving processor suitable for implementing embodiments of the present application.
As shown in fig. 5, the signal reception processor includes a Central Processing Unit (CPU)501 that can perform various appropriate actions and processes in accordance with a program stored in a Read Only Memory (ROM)502 or a program loaded from a storage section 508 into a Random Access Memory (RAM) 503. In the RAM 503, various programs and data necessary for system operation are also stored. The CPU 501, ROM 502, and RAM 503 are connected to each other via a bus 504. An input/output (I/O) interface 505 is also connected to bus 504.
The following components are connected to the I/O interface 505: an input portion 506 including a keyboard, a mouse, and the like; an output portion 507 including a display such as a Cathode Ray Tube (CRT), a Liquid Crystal Display (LCD), and the like, and a speaker; a storage portion 508 including a hard disk and the like; and a communication section 509 including a network interface card such as a LAN card, a modem, or the like. The communication section 509 performs communication processing via a network such as the internet. The driver 510 is also connected to the I/O interface 505 as necessary. A removable medium 511 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, or the like is mounted on the drive 510 as necessary, so that a computer program read out therefrom is mounted into the storage section 508 as necessary.
In particular, according to embodiments of the present application, the process described above with reference to the flowchart fig. 3 may be implemented as a computer software program. For example, embodiments of the present application include a computer program product comprising a computer program embodied on a machine-readable medium, the computer program comprising program code for performing the method illustrated in the flow chart. In such an embodiment, the computer program may be downloaded and installed from a network through the communication section 509, and/or installed from the removable medium 511. The above-described functions defined in the system of the present application are executed when the computer program is executed by the Central Processing Unit (CPU) 501.
It should be noted that the computer readable medium shown in the present application may be a computer readable signal medium or a computer readable storage medium or any combination of the two. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples of the computer readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, 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. In the present application, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. In this application, however, a computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wire, fiber optic cable, RF, etc., or any suitable combination of the foregoing.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
The units or modules described in the embodiments of the present application may be implemented by software or hardware. The described units or modules may also be provided in a processor, and may be described as: a processor includes a receiving unit, a searching unit, and an aligning unit. The names of these units or modules do not in some cases constitute a limitation on the units or modules themselves, for example, a receiving unit may also be described as a "unit for receiving signal data in two transmission links".
As another aspect, the present application also provides a computer-readable storage medium, which may be included in the electronic device described in the above embodiments; or may be separate and not incorporated into the electronic device. The computer readable storage medium stores one or more programs which, when executed by one or more processors, perform the signal non-destructive protection methods described herein.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the application referred to in the present application is not limited to the embodiments with a particular combination of the above-mentioned features, but also encompasses other embodiments with any combination of the above-mentioned features or their equivalents without departing from the spirit of the application. For example, the above features may be replaced with (but not limited to) features having similar functions as those described in this application.
Claims (10)
1. A method of signal lossless protection, comprising:
receiving signal data in two transmission links;
intercepting a sequence with a preset length from the signal data in one transmission link, and searching whether the same sequence exists in the signal data in the other transmission link;
if not, the signal data in the two transmission links need to be realigned.
2. The method of claim 1, wherein the truncating the sequence of the preset length from the signal data in one of the transmission links comprises:
and when the signal data is data with a non-framing structure, intercepting a BIT sequence with a preset length from the signal data in one transmission link.
3. The method of claim 1, wherein the truncating the sequence of the preset length from the signal data in one of the transmission links comprises:
and when the signal data is framing structure data, intercepting a CRC sequence with a preset length in the signal data in one transmission link.
4. The method of claim 1, further comprising:
determining whether the signal data in the two transmission links needs to be aligned again after they are aligned:
reading the signal data from both transmission links simultaneously;
if the signal data in the two transmission links do not reach the preset time at the same time, the signal data in the two transmission links need to be realigned.
5. The method of claim 1, further comprising:
and transmitting the signal data in the two aligned transmission links to a buffer module for buffering.
6. A signal non-destructive protection device, comprising:
the receiving module is used for receiving signal data in the two transmission links;
the searching module is used for intercepting a sequence with a preset length from the signal data in one transmission link and searching whether the same sequence exists in the signal data in the other transmission link;
and the aligning module is used for realigning the signal data in the two transmission links when the signal data in the other transmission link does not have a sequence with a preset length intercepted in one transmission link.
7. The apparatus of claim 6, wherein the search module is specifically configured to: and when the signal data is data with a non-framing structure, intercepting a BIT sequence with a preset length from the signal data in one transmission link.
8. The apparatus of claim 6, wherein the search module is specifically configured to: and when the signal data is framing structure data, intercepting a CRC sequence with a preset length in the signal data in one transmission link.
9. A signal receiver comprising a memory and a processor, the memory having stored thereon a computer program, characterized in that the processor, when executing the program, implements the method according to any of claims 1 to 5.
10. A computer-readable storage medium, on which a computer program is stored, which program, when being executed by a processor, carries out the method according to any one of claims 1 to 5.
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| CN202011486213.1A CN112713963A (en) | 2020-12-16 | 2020-12-16 | Signal nondestructive protection method and device, signal receiver and readable storage medium |
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| CN202011486213.1A CN112713963A (en) | 2020-12-16 | 2020-12-16 | Signal nondestructive protection method and device, signal receiver and readable storage medium |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115549843A (en) * | 2022-12-02 | 2022-12-30 | 北京华环电子股份有限公司 | Optical service unit OSU signal nondestructive protection method and device |
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Application publication date: 20210427 |