CN101882974A - Method and system of real-time online detection of high-speed serial signals - Google Patents
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Abstract
The present invention discloses a method of real-time online detection of high-speed serial signals, which comprises the following steps that: the generated error correction code and business data are overlaid by a sending terminal of high-speed serial signals and then are sent out by a high-speed serial bus; a receiving terminal of high-speed serial signals separates the received error correction code and business data in the high-speed serial signals and compares the separated error correction code with the local inherent error correction code, if the two error correction codes are different, the quality of the high-speed serial signals is damaged. The invention also discloses a system of real-time online detection of high-speed serial signals. The method and the system can be used for detecting the high-speed serial signals in different work environments at real time in the operation process of communication business.
Description
Technical Field
The invention relates to a detection technology of a high-speed serial bus, in particular to a method and a system for real-time online detection of a high-speed serial signal.
Background
At present, a high-speed serial bus technology is widely applied to the field of communication, and a high-speed serial signal is also widely applied due to the advantages of high transmission rate, simple interface and the like. In the service operation process, if the line quality of the high-speed serial bus has a problem, the quality of the high-speed serial signal transmitted in the line is also correspondingly reduced. In order to detect the line quality of the high-speed serial bus, a method for detecting the quality of the high-speed serial signal is generally adopted. However, the high transmission rate of the high-speed serial signal causes many difficulties in the detection operation.
In the prior art, a commonly used method for detecting a high-speed serial signal is as follows: in the case of a complete interruption of the service, i.e. in the case of no transmission of service data in the entire communication system, but only a small number of idle high-speed serial signals, the sampling tests a part of the high-speed serial signals in a specific operating environment. The detection method has the following defects: firstly, the existing testing method can only sample part of high-speed serial signals to detect, thus, the signal quality problem of the non-sampled high-speed serial signals cannot be fed back to system maintenance personnel in time, thereby influencing the repair work of a high-speed serial bus and preventing a communication system from operating normally; in addition, the existing detection method is performed under the condition that the service is completely interrupted, and because signals in the line are few, the detection result is inconsistent with the actual operation condition, namely the detection result is inaccurate, and the continuous operation of the communication service is also influenced.
Disclosure of Invention
In view of the above, the main objective of the present invention is to provide a method and a system for real-time online detection of high-speed serial signals, which can detect the high-speed serial signals in different working environments in real time during the operation of communication services.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the invention provides a real-time online detection method for high-speed serial signals, which comprises the following steps:
the high-speed serial signal sending end superposes the generated error correcting code and the service data and sends out the error correcting code and the service data through a high-speed serial bus; and the high-speed serial signal receiving end separates the error correcting code and the service data in the received high-speed serial signal, compares the separated error correcting code with the local inherent error correcting code, and determines that the quality of the high-speed serial signal is damaged if the two are different.
The error correcting code is a single type code stream sequence or a combination of two or more different types of code stream sequences.
The superposition operation executed by the high-speed serial signal sending end specifically includes: error correction codes are inserted before, after or in the middle of the traffic data.
The separation operation executed by the high-speed serial signal receiving end specifically includes: and the high-speed serial signal receiving end separates the error correcting code from the service data according to the type and the superposition method of the code stream obtained by superposing the error correcting code and the service data.
Wherein, the high-speed serial signal receiving end executes the comparison operation of the error correcting code, and after determining that the two error correcting codes are different, the method further comprises: and deeply analyzing the quality of the high-speed serial signal according to the separated error correcting code.
The invention also provides a system for real-time online detection of high-speed serial signals, which comprises: the high-speed serial signal transmitting terminal and the high-speed serial signal receiving terminal; wherein,
the high-speed serial signal sending end is used for overlapping the generated error correcting code and the service data and sending an overlapping result to the high-speed serial signal receiving end through a high-speed serial bus;
the high-speed serial signal receiving end is used for separating the error correcting code and the service data in the received high-speed serial signal, comparing the separated error correcting code with the local inherent error correcting code, and determining that the quality of the high-speed serial signal is damaged if the two are different.
Wherein the high-speed serial signal transmitting end further comprises: the device comprises an error correcting code generating module and a superposition sending module; wherein,
the error correcting code generating module is used for generating an error correcting code and sending the generated error correcting code to the superposition sending unit;
and the superposition sending module is used for superposing the error correcting code generated by the error correcting code generating module and the service data and sending a superposition result to the high-speed serial signal receiving end through the high-speed serial bus.
Wherein the high-speed serial signal receiving terminal further comprises: a receiving separation module and a comparison module; wherein,
the receiving and separating module is used for receiving the high-speed serial signal sent by the high-speed serial signal sending end, separating the error correcting code and the service data in the high-speed serial signal and sending the separated error correcting code to the comparing module;
and the comparison module is used for comparing the error correcting code sent by the receiving separation module with the local inherent error correcting code of the high-speed serial signal receiving end, and if the error correcting code and the local inherent error correcting code are different, the quality of the high-speed serial signal is determined to be damaged.
The high-speed serial signal receiving end in the system further comprises an analysis processing module which is used for deeply analyzing the quality of the high-speed serial signal according to the separated error correcting code; accordingly, the method can be used for solving the problems that,
the comparing module is further used for sending the error correcting codes separated by the receiving and separating module to the analyzing and processing module.
The error correcting code is a single type code stream sequence or a combination of two or more different types of code stream sequences.
In the scheme of the invention, the error correcting code is sent while the service data is sent, and whether the quality of the high-speed serial signal is damaged or not is determined by comparing and judging the error correcting code, so that the detection work of the high-speed serial signal is carried out in the service running process, the service is not required to be interrupted, and the continuous service can be ensured; in addition, the invention detects the high-speed serial signals in the high-speed serial bus in real time, namely, in the actual working environment, so that the accuracy of the detection result is higher.
In addition, the high-speed serial signal sending end and the corresponding high-speed serial signal receiving end in different working environments of the whole communication system can simultaneously detect the high-speed serial signals in the environment, so that all the quality problems of the high-speed serial signals in the whole communication system can be timely fed back to system maintenance personnel, the high-speed serial bus line maintenance work can be timely and accurately carried out conveniently, and the normal operation of the communication system is ensured.
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FIG. 1 is a schematic diagram of a process for real-time online detection of high-speed serial signals according to the present invention;
FIG. 2 is a schematic diagram of a system for real-time online detection of high-speed serial signals according to the present invention.
Detailed Description
The basic idea of the invention is: the high-speed serial signal sending end superposes the generated error correcting code and the service data and sends out the error correcting code and the service data through a high-speed serial bus; and the high-speed serial signal receiving end separates the error correcting code and the service data in the received high-speed serial signal, compares the separated error correcting code with the local inherent error correcting code, and determines that the quality of the high-speed serial signal is damaged if the two are different.
Further, if the two error correction codes are the same, it is determined that the quality of the high-speed serial signal is good.
The local inherent error correcting code of the high-speed serial signal receiving end is the same as the error correcting code generated by the high-speed serial signal transmitting end.
The invention is described in further detail below with reference to the figures and the embodiments.
Fig. 1 is a schematic flow chart of the implementation of the method for real-time online detection of high-speed serial signals according to the present invention, and as shown in fig. 1, the implementation steps of the method are as follows:
step 101: the high-speed serial signal sending end generates an error correcting code;
the method specifically comprises the following steps: the high-speed serial signal transmitting end generates an error correction code before transmitting service data.
Here, the error correcting code is used for reflecting the quality change of the detected high-speed serial signal, the error correcting code is a code stream sequence with specific characteristics, and the specific format of the error correcting code stream can be selected in various ways as long as the code stream contains the characteristic sequence. The error correcting code is a single type code stream sequence, such as: pseudo Random Binary Sequence (PRBS), such as: PRBS3, PRBS4, PRBS5, PRBS7, etc., can also be K28.5 +/-sequences, and can also be a combination of two or more different types of code stream sequences.
The error correction code is described in detail below by way of example, in this example as a combination of a K28.5 +/-sequence and a PRBS5 code, as follows:
00111110101100000100111001000101011110110100110000
wherein, the first 19 bits of the error correcting code are K28.5 sequences, and are composed of alternating K28.5+ sequences and K28.5-sequences. The first 19 bit data string 0011111010110000010 includes five consecutive 1 s and five consecutive 0 s, with separate 1-010 and 0-101. It is known that in existing 8B/10B coding systems, a repeated K28.5 +/-sequence is used to measure deterministic jitter due to reference level ambiguity, low bandwidth and offset; the PRBS5 code is 0111001000101011110110100110000, which contains more low-frequency components and can be used for measuring the performance of the scrambled data code stream.
Step 102: the high-speed serial signal sending end superposes the generated error correcting code and the service data and then sends out the error correcting code and the service data through a high-speed serial bus;
the method specifically comprises the following steps: the high-speed serial signal transmitting end superimposes a data packet composed of the generated error correction code and the service data, for example: the error correcting code is inserted in front of, behind or in the middle of the service data and transmitted to the high-speed serial signal receiving end through the high-speed serial bus.
Here, since the error correction code is transmitted while transmitting the service data, and inevitably occupies a part of the bandwidth required for transmission of the service data, the present invention can ensure normal transmission of the service data by increasing the transmission rate of the high-speed serial signal, and the error correction code can also be normally transmitted.
Step 103: after receiving the high-speed serial signal, the high-speed serial signal receiving end separates the error correcting code and the service data;
the method specifically comprises the following steps: after receiving the high-speed serial signal sent by the sending end, the high-speed serial signal receiving end separates the error correcting code from the service data in the high-speed serial signal.
In the invention, after the high-speed serial signal sending end sends the service data superposed with the error correcting code to the high-speed serial signal receiving end, the high-speed serial signal receiving end is informed of the code stream type and the superposition method of the error correcting code and the service data, such as: inserting the error correcting code in front of, behind or in the middle of the service data, and the like, then separating the error correcting code and the service data by the high-speed serial signal receiving end according to the code stream type and the superposition method.
Step 104: the high-speed serial signal receiving end compares the separated error correcting code with a local inherent error correcting code, and if the two are different, the quality of the high-speed serial signal is determined to be damaged; if the two are the same, determining that the quality of the high-speed serial signal is good;
the method specifically comprises the following steps: the high-speed serial signal receiving end compares the error correcting code separated from the high-speed serial signal with the local inherent error correcting code of the high-speed serial signal receiving end, and if the separated error correcting code is different from the local inherent error correcting code of the high-speed serial signal receiving end, the quality of the high-speed serial signal transmitted from the high-speed serial signal transmitting end to the high-speed serial signal receiving end is determined to be damaged, and then the fault of a line of a high-speed serial bus between the high-speed serial signal transmitting end and the high-speed serial signal receiving end is determined; and if the separated error correcting code is the same as the local inherent error correcting code of the high-speed serial signal receiving end, determining that the quality of the high-speed serial signal transmitted from the high-speed serial signal transmitting end to the high-speed serial signal receiving end is good, and further determining that the line of a high-speed serial bus between the high-speed serial signal transmitting end and the high-speed serial signal receiving end is normal.
In the invention, after the high-speed serial signal sending end sends the service data superposed with the error correcting code to the high-speed serial signal receiving end, the high-speed serial signal receiving end is informed of the code stream type superposed with the error correcting code and the service data and the superposition method, and because the error correcting code is a specific code stream, as long as the high-speed serial signal receiving end knows the code stream type, the error correcting code can be generated, and the error correcting code is the same as the error correcting code generated by the high-speed serial signal sending end.
Taking the error correction code in step 101 as an example, the error correction code separated in this step is different from the local inherent error correction code at the high-speed serial signal receiving end, and is: the high and low levels in the error correction code stream in step 101 change, for example: and 0 in the code stream before transmission is changed into 1 after transmission, or 1 in the code stream is changed into 0 through transmission, and the like.
Further, if the two error correction codes are different, the high-speed serial signal receiving end deeply analyzes the quality of the high-speed serial signal according to the separated error correction code, specifically, determines which bit or bits of the error correction code have changed, so as to determine the characteristics of the characteristic sequence in the error correction code, such as: the nature of the K28.5 +/-sequence determines the cause of the degradation in quality of the high speed serial signal.
In order to implement the above method, the present invention further provides a system for real-time online detection of a fast serial signal, as shown in fig. 2, the system includes: the high-speed serial signal transmitting terminal and the high-speed serial signal receiving terminal; wherein,
the high-speed serial signal sending end is used for overlapping the generated error correcting code and the service data and sending an overlapping result to the high-speed serial signal receiving end through a high-speed serial bus;
the high-speed serial signal receiving end is used for separating the error correcting code and the service data in the received high-speed serial signal, comparing the separated error correcting code with the local inherent error correcting code, and determining that the quality of the high-speed serial signal is damaged if the two are different.
The high-speed serial signal transmitting terminal further includes: the device comprises an error correcting code generating module and a superposition sending module; wherein,
the error correcting code generating module is used for generating an error correcting code and sending the generated error correcting code to the superposition sending unit;
and the superposition sending module is used for superposing the error correcting code generated by the error correcting code generating module and the service data and sending a superposition result to the high-speed serial signal receiving end through the high-speed serial bus.
The high-speed serial signal receiving terminal further comprises: a receiving separation module and a comparison module; wherein,
the receiving and separating module is used for receiving the high-speed serial signal sent by the high-speed serial signal sending end, separating the error correcting code and the service data in the high-speed serial signal and sending the separated error correcting code to the comparing module;
and the comparison module is used for comparing the error correcting code sent by the receiving separation module with the local inherent error correcting code of the high-speed serial signal receiving end, and if the error correcting code and the local inherent error correcting code are different, the quality of the high-speed serial signal is determined to be damaged.
The high-speed serial signal receiving end in the system further comprises an analysis processing module which is used for deeply analyzing the quality of the high-speed serial signal according to the separated error correcting code; accordingly, the method can be used for solving the problems that,
the comparing module is further used for sending the error correcting codes separated by the receiving and separating module to the analyzing and processing module.
The error correcting code is as follows: PRBS or K28.5 +/-sequences, or a combination of PRBS and K28.5 +/-sequences.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, and any modifications, equivalents, improvements, etc. that are within the spirit and principle of the present invention should be included in the present invention.
Claims (10)
1. A real-time online detection method for high-speed serial signals is characterized by comprising the following steps:
the high-speed serial signal sending end superposes the generated error correcting code and the service data and sends out the error correcting code and the service data through a high-speed serial bus; and the high-speed serial signal receiving end separates the error correcting code and the service data in the received high-speed serial signal, compares the separated error correcting code with the local inherent error correcting code, and determines that the quality of the high-speed serial signal is damaged if the two are different.
2. The method according to claim 1, wherein the error correction code is a single type of code stream sequence or a combination of two or more different types of code stream sequences.
3. The method for real-time online detection of high-speed serial signals according to claim 1 or 2, wherein the superposition operation performed by the high-speed serial signal sending end specifically comprises: error correction codes are inserted before, after or in the middle of the traffic data.
4. The method for real-time online detection of high-speed serial signals according to claim 1 or 2, wherein the separation operation performed by the high-speed serial signal receiving terminal specifically comprises: and the high-speed serial signal receiving end separates the error correcting code from the service data according to the type and the superposition method of the code stream obtained by superposing the error correcting code and the service data.
5. The method for real-time online detection of high-speed serial signals according to claim 1 or 2, wherein the high-speed serial signal receiving end performs a comparison operation of error correction codes, and after determining that the two error correction codes are different, the method further comprises: and deeply analyzing the quality of the high-speed serial signal according to the separated error correcting code.
6. A system for real-time online detection of high-speed serial signals is characterized by comprising: the high-speed serial signal transmitting terminal and the high-speed serial signal receiving terminal; wherein,
the high-speed serial signal sending end is used for overlapping the generated error correcting code and the service data and sending an overlapping result to the high-speed serial signal receiving end through a high-speed serial bus;
the high-speed serial signal receiving end is used for separating the error correcting code and the service data in the received high-speed serial signal, comparing the separated error correcting code with the local inherent error correcting code, and determining that the quality of the high-speed serial signal is damaged if the two are different.
7. The system for real-time online detection of high-speed serial signals according to claim 6, wherein the high-speed serial signal transmitting end further comprises: the device comprises an error correcting code generating module and a superposition sending module; wherein,
the error correcting code generating module is used for generating an error correcting code and sending the generated error correcting code to the superposition sending unit;
and the superposition sending module is used for superposing the error correcting code generated by the error correcting code generating module and the service data and sending a superposition result to the high-speed serial signal receiving end through the high-speed serial bus.
8. The system for real-time on-line detection of high-speed serial signals according to claim 6 or 7, wherein the high-speed serial signal receiving end further comprises: a receiving separation module and a comparison module; wherein,
the receiving and separating module is used for receiving the high-speed serial signal sent by the high-speed serial signal sending end, separating the error correcting code and the service data in the high-speed serial signal and sending the separated error correcting code to the comparing module;
and the comparison module is used for comparing the error correcting code sent by the receiving separation module with the local inherent error correcting code of the high-speed serial signal receiving end, and if the error correcting code and the local inherent error correcting code are different, the quality of the high-speed serial signal is determined to be damaged.
9. The system for real-time on-line detection of high-speed serial signals according to claim 6 or 7, wherein the high-speed serial signal receiving end in the system further comprises an analysis processing module for deeply analyzing the quality of the high-speed serial signals according to the separated error correction codes; accordingly, the method can be used for solving the problems that,
the comparing module is further used for sending the error correcting codes separated by the receiving and separating module to the analyzing and processing module.
10. The system for real-time online detection of high-speed serial signals according to claim 6 or 7, wherein the error correction code is a single type of code stream sequence or a combination of two or more different types of code stream sequences.
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Cited By (4)
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| CN103763037A (en) * | 2013-12-17 | 2014-04-30 | 记忆科技(深圳)有限公司 | Dynamic compensation receiver and dynamic compensation receiving method |
| CN105450433A (en) * | 2014-08-18 | 2016-03-30 | 华为技术有限公司 | Method, device, and system for configuring high-speed serial bus parameter |
| CN111726178A (en) * | 2020-07-02 | 2020-09-29 | 孟迪 | Data transmission signal detection system and method based on radio module |
| CN116667858A (en) * | 2023-08-01 | 2023-08-29 | 上海芯炽科技集团有限公司 | Method for detecting MIPI APHY high-speed differential signals |
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| CN116667858A (en) * | 2023-08-01 | 2023-08-29 | 上海芯炽科技集团有限公司 | Method for detecting MIPI APHY high-speed differential signals |
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Application publication date: 20101110 |