CN117061390A - Software testing method for optical fiber communication delay - Google Patents
Software testing method for optical fiber communication delay Download PDFInfo
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- CN117061390A CN117061390A CN202311112112.1A CN202311112112A CN117061390A CN 117061390 A CN117061390 A CN 117061390A CN 202311112112 A CN202311112112 A CN 202311112112A CN 117061390 A CN117061390 A CN 117061390A
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- 238000004891 communication Methods 0.000 title claims abstract description 115
- 239000013307 optical fiber Substances 0.000 title claims abstract description 58
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000013522 software testing Methods 0.000 title claims abstract description 10
- 238000005259 measurement Methods 0.000 claims abstract description 12
- 238000012360 testing method Methods 0.000 claims abstract description 9
- 238000005070 sampling Methods 0.000 claims abstract description 4
- 230000000977 initiatory effect Effects 0.000 claims description 9
- 239000000835 fiber Substances 0.000 claims description 6
- 238000013461 design Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 7
- 238000004590 computer program Methods 0.000 description 5
- 230000006870 function Effects 0.000 description 5
- 238000012545 processing Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0852—Delays
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
- H04B10/0795—Performance monitoring; Measurement of transmission parameters
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/14—Arrangements for monitoring or testing data switching networks using software, i.e. software packages
Abstract
The application relates to a software testing method for optical fiber communication delay, which comprises the following steps: step 1, measuring single communication time by means of a us-level auxiliary clock through a loop communication method; step 2, calculating the time of continuous loop communication for a plurality of times by means of the system clock count of ms level and the auxiliary clock count of us level, and calculating the average communication time by combining the loop times; and step 3, sampling and testing the optical fiber loop communication time at different moments to acquire fluctuation of optical fiber communication delay, and sequentially evaluating the communication delay stability of the optical fiber communication delay. The application can accurately measure the minimum time delay of optical fiber communication by using the high-precision auxiliary clock in a software mode under the condition of not setting a hardware measurement point, and provides a feasible implementation scheme for communication design and acceptance of low-delay application scenes.
Description
Technical Field
The application belongs to the technical field of optical fiber communication, and relates to a software testing method of communication delay, in particular to a software testing method of optical fiber communication delay.
Background
Optical fiber communication is applied to many scenes with high-speed communication requirements due to the characteristics of high communication speed and high bandwidth. However, because the optical fiber communication has no unified hardware standard, driving standard and underlying protocol standard, the communication delay has great uncertainty, and in some scenes, it cannot be determined whether the performance requirement of high-speed communication can be met, and the delay condition of the optical fiber communication needs to be measured specifically.
And because the terminal equipment of the optical fiber communication is far away, the condition of setting a hardware measurement point is not necessarily provided, and the existing optical fiber communication delay measurement method can only measure the statistical average value of the optical fiber communication delay, and cannot accurately measure the instantaneous delay.
No prior art documents identical or similar to the present application were found upon retrieval.
Disclosure of Invention
The application aims to overcome the defects of the prior art, and provides a software testing method for optical fiber communication delay, which can measure the delay condition of optical fiber communication in multiple aspects through the software method.
The application solves the practical problems by adopting the following technical scheme:
a software testing method for optical fiber communication delay comprises the following steps:
step 1, measuring single communication time by means of a us-level auxiliary clock through a loop communication method;
step 2, calculating the time of continuous loop communication for a plurality of times by means of the system clock count of ms level and the auxiliary clock count of us level, and calculating the average communication time by combining the loop times;
and step 3, sampling and testing the optical fiber loop communication time at different moments to acquire fluctuation of optical fiber communication delay, and sequentially evaluating the communication delay stability of the optical fiber communication delay.
Moreover, the specific steps of the step 1 include:
1) The terminal A initializes a us-level auxiliary clock as a metering reference for measuring communication time;
2) Before initiating optical fiber communication, the terminal A acquires a current auxiliary clock count startstartstarttime;
3) The terminal A sends an optical fiber message to the terminal B;
4) After receiving the optical fiber message, the terminal B immediately sends the optical fiber message to the terminal B;
5) After the terminal A acquires the optical fiber message sent by the terminal B, the terminal A immediately acquires the current auxiliary clock count endStampTime;
6) Terminal A obtains auxiliary clock count frequency freStamp;
7) The single fiber communication loop back time is calculated by (endStampTime-startStampTme)/fresta.
Moreover, the specific steps of the step 2 include:
1) The terminal A initializes a ms-level system clock and a us-level auxiliary clock as measurement references for measuring communication time;
2) Before initiating optical fiber communication, the terminal A acquires a current system clock count startSysTime and a current auxiliary clock count startStampTime;
3) Judging whether the loop communication is completed for N times;
4) If not, carrying out loop communication of terminal A- > terminal B- > terminal A' once, and then carrying out judgment of 3);
5) If the loop communication is completed for N times, the terminal A acquires an auxiliary clock count endStampTime and an auxiliary clock count frequency freStamp at the current moment, and acquires a system clock count endSysTime and a system clock count freSys;
6) The average loop time for single fiber communication was calculated by ((endSysTime-startSysTme)/freSys)/1+ ((endStampTime-startStampTme)/fresTAmp)% 1.
Moreover, the specific steps of the step 3 include:
1) The terminal A initializes a ms-level system clock as a measurement reference for measuring communication time;
2) Before initiating optical fiber communication, the terminal A acquires a current auxiliary clock count startstartstarttime;
3) Judging whether the loop communication is completed for N times;
4) If not, carrying out loop communication of the terminal A- > terminal B- > terminal A once after randomly delaying for a period of time, obtaining time-consuming delay [ n ] of the loop communication, and then carrying out judgment of the step 3);
5) If the loop communication is completed for N times, the instantaneous delay of each message is counted through delay, and the lowest instantaneous delay value, the maximum fluctuation amplitude and the delay discrete condition are calculated in sequence.
The application has the advantages and beneficial effects that:
the application provides a software testing method for optical fiber communication delay, which can accurately measure the minimum optical fiber communication delay by using a high-precision auxiliary clock in a software mode under the condition of not setting a hardware measuring point and provides a feasible implementation scheme for communication design and acceptance of a low-delay application scene.
Drawings
FIG. 1 is a schematic diagram of a delay test of optical fiber communication according to the present application
FIG. 2 is a single communication time measurement flow chart of the present application;
FIG. 3 is a flow chart of the average communication time measurement of the present application;
fig. 4 is a communication time stability measurement flow chart of the present application.
Detailed Description
Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the application.
The application forms a communication loop through two terminal devices of a communication link, and measures the average delay and delay fluctuation of optical fiber communication through software by a method of multi-group loopback test, as shown in figure 1.
Most hardware environments may provide a system clock count on the ms level at the VxWorks operating system or the linux operating system, and an auxiliary clock may provide an auxiliary clock count on the us level. Relatively accurate software time can be obtained using the system clock and the auxiliary clock in combination.
The software testing method for the optical fiber communication delay, as shown in fig. 2 to 4, comprises the following steps:
step 1, measuring single communication time by means of a us-level auxiliary clock through a loop communication method;
the specific steps of the step 1 comprise:
1) The terminal A initializes a us-level auxiliary clock as a metering reference for measuring communication time;
2) Before initiating optical fiber communication, the terminal A acquires a current auxiliary clock count startstartstarttime;
3) The terminal A sends an optical fiber message to the terminal B;
4) After receiving the optical fiber message, the terminal B immediately sends the optical fiber message to the terminal B;
5) After the terminal A acquires the optical fiber message sent by the terminal B, the terminal A immediately acquires the current auxiliary clock count endStampTime;
6) Terminal A obtains auxiliary clock count frequency freStamp;
7) The single fiber communication loop back time is calculated by (endStampTime-startStampTme)/fresta.
Step 2, calculating the time of continuous loop communication for a plurality of times by means of the system clock count of ms level and the auxiliary clock count of us level, and calculating the average communication time by combining the loop times;
the specific steps of the step 2 include:
1) The terminal A initializes a ms-level system clock and a us-level auxiliary clock as measurement references for measuring communication time;
2) Before initiating optical fiber communication, the terminal A acquires a current system clock count startSysTime and a current auxiliary clock count startStampTime;
3) Judging whether the loop communication is completed for N times;
4) If not, carrying out loop communication of terminal A- > terminal B- > terminal A' once, and then carrying out judgment of 3);
5) If the loop communication is completed for N times, the terminal A acquires an auxiliary clock count endStampTime and an auxiliary clock count frequency freStamp at the current moment, and acquires a system clock count endSysTime and a system clock count freSys;
6) The average loop time for single fiber communication was calculated by ((endSysTime-startSysTme)/freSys)/1+ ((endStampTime-startStampTme)/fresTAmp)% 1.
And step 3, sampling and testing the optical fiber loop communication time at different moments to acquire fluctuation of optical fiber communication delay, and sequentially evaluating the communication delay stability of the optical fiber communication delay.
The specific steps of the step 3 include:
1) The terminal A initializes a ms-level system clock as a measurement reference for measuring communication time;
2) Before initiating optical fiber communication, the terminal A acquires a current auxiliary clock count startstartstarttime;
3) Judging whether the loop communication is completed for N times;
4) If not, carrying out loop communication of the terminal A- > terminal B- > terminal A once after randomly delaying for a period of time, obtaining time-consuming delay [ n ] of the loop communication, and then carrying out judgment of the step 3);
5) If the loop communication is completed for N times, the instantaneous delay of each message is counted through delay, and the lowest instantaneous delay value, the maximum fluctuation amplitude and the delay discrete condition are calculated in sequence.
Therefore, the application can accurately measure the minimum time delay of the optical fiber communication by utilizing the high-precision auxiliary clock in a software mode under the condition of not setting a hardware measurement point, and provides a feasible implementation scheme for communication design and acceptance of low-delay application scenes.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Claims (4)
1. A software testing method for optical fiber communication delay is characterized in that: the method comprises the following steps:
step 1, measuring single communication time by means of a us-level auxiliary clock through a loop communication method;
step 2, calculating the time of continuous loop communication for a plurality of times by means of the system clock count of ms level and the auxiliary clock count of us level, and calculating the average communication time by combining the loop times;
and step 3, sampling and testing the optical fiber loop communication time at different moments to acquire fluctuation of optical fiber communication delay, and sequentially evaluating the communication delay stability of the optical fiber communication delay.
2. The method for testing the software of the optical fiber communication delay according to claim 1, wherein the method comprises the following steps: the specific steps of the step 1 comprise:
1) The terminal A initializes a us-level auxiliary clock as a metering reference for measuring communication time;
2) Before initiating optical fiber communication, the terminal A acquires a current auxiliary clock count startstartstarttime;
3) The terminal A sends an optical fiber message to the terminal B;
4) After receiving the optical fiber message, the terminal B immediately sends the optical fiber message to the terminal B;
5) After the terminal A acquires the optical fiber message sent by the terminal B, the terminal A immediately acquires the current auxiliary clock count endStampTime;
6) Terminal A obtains auxiliary clock count frequency freStamp;
7) The single fiber communication loop back time is calculated by (endStampTime-startStampTme)/fresta.
3. The method for testing the software of the optical fiber communication delay according to claim 1, wherein the method comprises the following steps: the specific steps of the step 2 include:
1) The terminal A initializes a ms-level system clock and a us-level auxiliary clock as measurement references for measuring communication time;
2) Before initiating optical fiber communication, the terminal A acquires a current system clock count startSysTime and a current auxiliary clock count startStampTime;
3) Judging whether the loop communication is completed for N times;
4) If not, carrying out loop communication of terminal A- > terminal B- > terminal A' once, and then carrying out judgment of 3);
5) If the loop communication is completed for N times, the terminal A acquires an auxiliary clock count endStampTime and an auxiliary clock count frequency freStamp at the current moment, and acquires a system clock count endSysTime and a system clock count freSys;
6) By passing through
The average loop time for single fiber communication was calculated as (((endSysTime-startSysTme)/freSys)/1+ ((endStampTime-startStampTme)/fresTAmp)% 1.
4. The method for testing the software of the optical fiber communication delay according to claim 1, wherein the method comprises the following steps: the specific steps of the step 3 include:
1) The terminal A initializes a ms-level system clock as a measurement reference for measuring communication time;
2) Before initiating optical fiber communication, the terminal A acquires a current auxiliary clock count startstartstarttime;
3) Judging whether the loop communication is completed for N times;
4) If not, carrying out loop communication of the terminal A- > terminal B- > terminal A once after randomly delaying for a period of time, obtaining time-consuming delay [ n ] of the loop communication, and then carrying out judgment of the step 3);
5) If the loop communication is completed for N times, the instantaneous delay of each message is counted through delay, and the lowest instantaneous delay value, the maximum fluctuation amplitude and the delay discrete condition are calculated in sequence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311112112.1A CN117061390A (en) | 2023-08-31 | 2023-08-31 | Software testing method for optical fiber communication delay |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311112112.1A CN117061390A (en) | 2023-08-31 | 2023-08-31 | Software testing method for optical fiber communication delay |
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| Publication Number | Publication Date |
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| CN117061390A true CN117061390A (en) | 2023-11-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202311112112.1A Pending CN117061390A (en) | 2023-08-31 | 2023-08-31 | Software testing method for optical fiber communication delay |
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- 2023-08-31 CN CN202311112112.1A patent/CN117061390A/en active Pending
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