JPS5917758A - Verifying system of transmission control procedure - Google Patents

Abstract

PURPOSE:To verify various transmission control procedures with a simple data input, by storing state transmission matrix data consisting of state numbers, factor numbers, and state transition indicating information corresponding to these numbers. CONSTITUTION:A state number, a factor number, and state transition indicating information corresponding to these numbers of a state transmission matrix MX of transmission control procedures are inputted from a data input device 100 of an on-line monitor device 10. Input data from the device 100 is analyzed in an input data analyzing part 110 and is converted to state transition MX data consisting of a row number R, column number C, and a state transition indicating command CMD, and this data is stored in a storge part 120. Transmission and reception data of a communication processing device 20 is detected by a I/O data detecting part 130 and is inputted to a checking part 140. The checking part 140 sets the state number corresponding to the transmission state of the device 20 and the factor number corresponding to receiving data to status parts 141 and 142 respectively, and these numbers are used to read out the CMD of the storage part 120, and it is displayed on a display device 170, and it is displayed on an error display device 180 when the CMD is abnormality indicating information.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a transmission control procedure verification method suitable for an online monitor device that monitors data transmission and reception on a communication line.

[Technical background of the invention and its problems]

In general, this type of online monitoring device mainly has the functions of 1) monitoring data transmission and reception on a communication line, 2) detecting a transmission abnormal sequence, and 2) simulating various transmission control procedures. Among the various functions that the device has, in order to use the functions ① and ② above, the user must be fully familiar with the transmission control procedure, create a program that interprets the logic (state transition matrix), and install it in the device. It needed to be stored. Unfortunately, such a program has the disadvantage that it can only detect phenomena specified in advance when detecting transmission abnormalities2.For this reason, when there are many types of transmission control procedures, It takes a lot of time to create programs, etc.
Moreover, it had the disadvantage that only certain users could operate it.

[Purpose of the invention]

The present invention has been made in view of the above circumstances, and its purpose is to:
It is an object of the present invention to provide a transmission control procedure verification method that allows verification of various transmission control procedures by simply inputting data without creating an online monitoring program for each transmission control procedure.

[Summary of the invention]

The present invention eliminates the need to create an online monitor program for each transmission control procedure by efficiently utilizing a state transition matrix (IJ) used in normal transmission control procedures.

This state transition matrix uses each state as a row (or column) to determine which state to transition to next when a factor (received character) occurs in a state.
Each factor is listed in its column (or row) position. In the present invention, this state transition matrix is defined as the number (
This is called a state number), the column or row number corresponding to the above factor (this is called a factor number), and state transition instruction information corresponding to these state numbers and factor numbers. It is stored in the memory unit in the form of matrix data. This state transition instruction information includes, in addition to the state number corresponding to the next state to be transitioned to, abnormality instruction information indicating that the corresponding procedure is an abnormal procedure. Such state transition map (IJ) data includes a state number, a cause number, a state number indicating the next transition state, and state transition instruction information including information indicating that the transition is an abnormal procedure for a transmission abnormality. It is possible to create it just by inputting data.

In the present invention, a status section is provided that indicates the latest transmission status of a transmission device and its counterpart device in a communication state using a status number, and when sending/receiving data is detected, the cause number corresponding to the sending/receiving data and the status number indicated by the status section are provided. According to the corresponding state number, the corresponding state transition instruction information in the above-mentioned state transition matrix data is read out. This information includes a state number indicating the next transition state, and by updating the corresponding state number in the status section to the newly read state number, the next step can be taken. There is. Further, the read information includes abnormality information, and in the present invention, it is detected whether the corresponding procedure is an abnormal procedure or not based on this abnormality information.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described with reference to the drawings. The drawings show the configuration of an online monitoring device to which the present invention is applied. In the figure, reference numeral 10 denotes an online monitor, which is connected to a transmission data line 40 and a reception data line 50 that connect the communication processing device 20 and the modulation/demodulation device 30.

60 is a communication line. In the online monitor 10, 100 is a data input device such as a keyboard for inputting data, and 110 is an input data analysis unit that analyzes input data from the data input device 100 and converts it into state transition matrix data of a transmission control procedure. This state transition ma)
The IJx data is a column of information consisting of a row number R, a column number C, and a state transition instruction command CMD. This line number R
The column number C indicates the row position and column position of the state transition matrix, and does not necessarily have to be a numerical value. As is well known, the IJ box (state transition matrix) is a list of procedures corresponding to transmission states in data transmission and reception, and is indicated by rows, for example, corresponding to the states in which information for this procedure consists, and columns, for example, corresponding to viewing factors. It is written in the position shown. 120 is a matrix data buffer (storage unit) in which the state transition matrix data converted by the input data analysis unit 110 is stored; 130 is a transmission data line 40;
This is a transmission/reception data detection section that detects the transmission data on the upper line and the reception data on the reception data line 50.

140 is an inspection section. An online monitor device 10 is connected to the inspection section 140. A status section 141 indicates the transmission status of the communication processing device 20 using a corresponding state number (line number in this example), and a data transmission/reception partner of the communication processing device 20. A status section 142 is provided which indicates the transmission status of the data by corresponding line numbers. The inspection unit 140 converts the transmission data or reception data detected by the transmission/reception data detection unit 130 into a corresponding factor number (in this example, a column number), and converts the column number and the status section 14 to the status section 142. The corresponding state transition instruction command CMD in the state transition matrix data is read out using the row number and the procedure is verified. 15
0 is a timer unit for counting time; 160 is a transmission/reception data buffer for temporarily storing transmission/reception data; 17
θ is a display device, and 180 is an error indicator such as a rung.

Next, the operation of one embodiment of the present invention will be explained. First, creation of state transition matrix data will be explained. An operator inputs a state transition matrix used in a normal transmission control procedure from the data input device 100 according to its format (two-dimensional matrix). This input data includes row number R1 column number C of the state transition matrix, and state transition instruction information written at a position corresponding to the row number R and column number C. This instruction information includes the line number corresponding to the next state to be taken, a timer value, a count value for specifying the number of retries, information indicating whether to send a request (indicated by column number), etc. , there is abnormality information indicating whether or not the corresponding procedure is an abnormal procedure.

It is possible to know in advance whether or not the corresponding procedure is an abnormal procedure. The input data analysis unit 110 is a data input device io.

Analyze the data input from the row number R and column number C.
and a state transition instruction command CMD (state transition instruction information) corresponding to the row number R and column number CK, which is converted into state transition matrix data and stored in the matrix data buffer 120. This results in
Effective operation of the online monitoring device 10 becomes possible.

Now, the communication processing device 20 receives 5TX (5tar) after sending the response.
The other device (not shown) is waiting for ETX (FJnd of Text; start of text).
(Text: End of text) It is assumed that the message is in a state of waiting for a response after being sent. In this case, the status section 141 indicates the row number of the state transition matrix corresponding to the waiting state of the STX after sending the response, and the status section 142 indicates the row number of the STX waiting state after sending the response.
It shows the column number of the state transition matrix corresponding to the response waiting state after sending T. In this state, the communication processing device 20
Assume that an ACK (Acknowledgment) is sent out on the transmission data line 40 from the beginning.

When the transmission/reception data detection section 130 detects ACK on the transmission data line 40, the transmission/reception data detection section 130 transmits the detected data ACK to the inspection section 14.
0 and output to the display device 170. As a result, data ACK is displayed on the display device 170.

On the other hand, the inspection unit 140 converts the data (factor) ACK into a corresponding column number of the state transition matrix. Inspection section 1
40 is a matrix data buffer 1 based on the row number indicated in the status section 142 and the column number converted above.
The corresponding state transition instruction command CMD is read from 2θ. This state transition command CMD includes a line number corresponding to the next state (in this case, the STX transmission state), and the inspection unit 140 updates the contents of the status unit 142 to the corresponding line number. Further, in this case, the abnormality information in the state transition command CMD indicates that the corresponding procedure is not abnormal, and the inspection unit 14θ determines whether the sequence is normal. Then, the inspection unit 160 stores the detected data ACK in the transmission/reception data buffer 160 as normal 7-sent reception data. At this time, inspection section 1
60 also stores the contents of the status sections 141 and 142 in the transmission/reception data buffer 160.

In response, the communication processing device 20 sends an ACK as described above.
I
Matrix data buffer 1
The corresponding state transition instruction command CMD is read from 20. In this case, the state transition instruction command CMD includes a line number that indicates the STX transmission state as the next state to be taken, and the corresponding procedure (when sending a response, the STX
The abnormality information indicating that the return (returned) is abnormal is included.

Therefore, the inspection unit 140 determines the abnormal sequence based on this abnormality information. Then, the inspection unit 140 stores the data STX in the abnormal sequence 160, and
The contents of the status section 141 142 t7) are also stored in the buffer 160.

In addition, the inspection unit 140 displays the abnormality determination result on the display device 170 and lights up the error indicator 180.

Also, if the communication processing device 20 does not receive an ACK (
N.A.K. (Negative Acknowledgment)
ge: negative response) is sent on the transmission data line 40, the inspection section 140 uses the row number indicated in the status section 142 and the column number of the state transition matrix corresponding to NAK (factor) to The corresponding state transition instruction command CMD is read from the data buffer 120. In this case, the command CMD includes a line number to indicate the STX transmitting state or neutral state as the next state to be taken, and a count value for specifying the allowable number of NAK returns, i.e., the number of IJ) runs. It is. At this time, the inspection unit 14θ increments a counter (not shown) by 1 and determines whether the contents of the counter match the count value for specifying the number of retries.

In the case of a mismatch, the inspection unit 140 updates the contents of the status unit 142 to a line number indicating the STX transmission state, and in the case of a match, updates the content to a line number to indicate a neutral state and determines an error. The inspection section 140 stores the error determination result, NAK, and the contents of the status sections 141 and 142 in the transmission/reception data buffer 160. In addition, the inspection unit 140 displays the error determination result on the display device 170, and lights up the error indicator 180 when an error is determined. By repeating such operations, the monitoring and transmission procedure verification results are accumulated in the transmission/reception data buffer 160 and displayed on the display device 1.
70.

By the way, in this embodiment, for example, the communication processing device 20 is
If gTX is sent from the other device while in the x wait state, the time between texts is monitored. This is done by setting a time in the timer section 150 when the inspection section 140 updates the corresponding status section 141 to the line number indicating the STX wait state after sending the response. A timer value for time setting is included in the corresponding state transition instruction command CMD.

In the above embodiment, the online monitoring device 10 was described as being constantly operating, but it may be configured to stop operating when an abnormality (error) is determined, that is, when the error indicator 180 is turned on. . Further, in the embodiment described above, various information including transmitted and received data is stored in the transmitted and received data buffer 160 regardless of whether or not an abnormality (error) is determined, but it is also possible to store it only when an abnormality (error) is determined. good. In this case, status section 1
If the information before and after the update of the corresponding status part of 41.142 is stored, the sequence in the event of an abnormality becomes clear.

〔Effect of the invention〕

As detailed above, according to the transmission control procedure verification method of the present invention, it is possible to verify various transmission control procedures by simply inputting data without creating an online monitoring glodarum for each transmission procedure. I can do it.

[Brief explanation of the drawing]

The drawing is a block diagram showing one embodiment of the present invention. 100... Data input device, 110... Input data analysis section, 120... Matrix data buffer (storage section), 130... Transmission/reception data detection section, 140...
Inspection section, 141, 142...Status section.

Claims (1)

[Claims] (state transition map of transmission control procedure) Data for inputting the state number and cause number of the IJ, and state transition instruction information that corresponds to the state number and cause number and includes abnormality instruction information indicating that the procedure is an abnormality. an input means, an input data analysis means for analyzing the data inputted by this means and converting it into state transition matrix data, and a storage section in which the state transition matrix data converted by this means is stored. a status section that indicates the latest transmission status of the transmission device and its partner device in a communication state using a corresponding status number; means for detecting transmitted/received data; and a cause number corresponding to the transmitted/received data detected by this means; and means for reading out the corresponding state transition instruction information of the IJ data in the storage section according to the state number corresponding to one of the state numbers indicated by the status section; means for updating the corresponding state number to the state number indicated by the state transition instruction information read from the storage unit; A transmission control procedure verification method characterized by comprising means for detecting the presence or absence of a sequence.