JPH02152333A - Communication performance analyzing equipment - Google Patents

Abstract

PURPOSE:To shorten the time of performance analysis and to improve reliability by recording the contents of data, which flow on satellite communication channel, and the time of data incoming or data outgoing to the line at real time, reading the data and executing computation. CONSTITUTION:Communication performance analyzing equipments 10a and 10b are connected to satellite earth stations 3a and 3b which are communication equipments to execute the transmission/reception through the satellite communication channel. Based on information accumulated by a recording part 11, a communication starting time, a communication ending time, the number of the data, the number of resending, a data amount and transmission speed are generated and based on generated information, the data amount transmitted in the time of difference between the transmission ending time and transmission starting time is calculated. Then, through-put is determined. Further, transmission efficiency is determined and a resending rate is determined. A calculated result is edited to the document image of a prescribed format and outputted. Thus, the performance analyzing time can be shortened and the reliability can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a communication performance analysis device for data communication using a satellite communication line.

5 Overview] The present invention provides a performance analysis device for a device that performs data communication via a satellite communication line, which automatically extracts data content and data transmission/reception times, calculates performance, and organizes the calculation results. This makes it possible to improve the reliability of analysis performance.

[Conventional technology]

Conventionally, with this type of communication performance analysis device, an online scope is connected to a line and the data flowing over the line is recorded, and the data is displayed on the screen of the online scope or output to a printer, and the content and details of the data are analyzed. After manually finding out the data transmission/reception times, performance calculations and calculation results were manually calculated.

[Problem that the invention seeks to solve]

Conventional communication performance analysis devices like this one output the data recorded by the online scope to a screen or printer and then manually retrieve the information necessary for performance analysis, which requires a large amount of time to retrieve the information. It is time consuming and has the disadvantage that information is easily overlooked or misunderstood. Also,
Since the calculation of performance and the organization of the calculation results are performed manually, there is a possibility that calculation errors and transcription errors may occur, which has the drawback of reducing the reliability of the analyzed performance.

SUMMARY OF THE INVENTION The present invention aims to eliminate such drawbacks and to provide a communication performance analysis device that has means for significantly reducing manual labor involved in analysis.

[Means for solving problems]

The present invention provides a communication performance analysis device connected to a communication device that transmits and receives data via a satellite communication line, which stores information in which the transmission and reception time of this data is added to the attributes of data transmitted and received by the communication device. a storage means, a communication start time, a communication end time, based on the information accumulated by the storage means;
The number of data items, the number of retransmissions, the amount of data, and the transmission speed are generated, and based on this generated information, the amount of data sent within the time difference between the transmission end time and the transmission start time is determined, and the throughput is determined. Transfer efficiency is determined by calculating the ratio of the time difference between the end time and the transmission start time, the product of the transmission speed, and the amount of data, and the value of the difference between the number of data items and the number of retransmissions and the number of retransmissions. The present invention is characterized by comprising a calculation means for determining a retransmission rate by calculating a value of the ratio of , and an output section for editing and outputting the calculation result of the calculation means into a form image in a predetermined format.

[Effect]

Obtain the content of data flowing on the satellite communication line and the time when data was received from or sent to the line,
Record to file in real time. This recorded information is read out, necessary information is automatically picked up, performance is calculated, and the calculation results are organized in a tabular format and output as a form.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block configuration diagram showing the configuration of the apparatus of this embodiment. As shown in FIG. 1, this embodiment device includes a recording unit 11 that records the content of data flowing on the line and data transmission and reception times in a trace file 14, and a recording unit 11 that reads information recorded from the trace file 14 and performs various communications. It includes a calculation unit 12 that calculates performance, and an output unit 13 that organizes calculation results in a table format and outputs a form. FIG. 2 is a block configuration diagram showing the configuration of a system in which the embodiment device is used. As shown in FIG. 2, this system includes computers 2a and 2b that perform data communication, satellite earth stations 3a and 3b that transmit and receive radio waves to and from communication satellites, and a communication satellite 1. 2b communicates with satellite earth stations 3a and 3b, respectively, via communication satellite 1. Communication performance analysis device 10a which is an example device
and 10b are incorporated into each of computers 2a and 2b.

That is, this embodiment device is connected to satellite earth stations 3a and 3b, which are communication devices that transmit and receive data via a satellite communication line, and sets the transmission and reception time of this data in the attributes of the data transmitted and received by the communication devices. The recording unit 11, the trace file 14, and the CPU 30, which are storage means for storing added information, and the communication start time, communication end time, number of data items, number of retransmissions,
Generate the data amount and transmission speed, calculate the amount of data transmitted within the time difference between the transmission end time and transmission start time based on this generated information, determine the throughput, and determine the transmission end time and transmission start time. The transfer efficiency is determined by calculating the ratio between the product of the difference between the time and the transmission speed and the data l, and the ratio between the difference between the number of data items and the number of retransmissions and the number of retransmissions. Calculation unit 1 is a calculation means for determining the retransmission rate.
2, and an output unit 13 for editing and outputting the calculation results of the calculation means into a form image in a predetermined format.

FIG. 3 is an explanatory diagram showing the operation of the recording section 11 of the embodiment apparatus. When the recording unit 11 receives transmitted and received data from the communication device 20 that transmits and receives data to and from the communication line, the recording unit 11 records the CP
After issuing a time acquisition request to U30 and acquiring the time at that point, information obtained by adding the transmission/reception time to the beginning of the transmission/reception data is written to the trace file 14 and accumulated.

FIG. 4 is an explanatory diagram showing the operation of the calculation section 12 of the embodiment device. The calculation unit 12 reads the information written to the trace file 14, organizes the data on the data organization table 121, and calculates various communication performances from the values on the data organization table 121.

When the first data on the trace file 14 is read, the time of the first data is stored in the transmission start time area on the data organization table 121, and the data number counter is set to "1".
”. In addition, information on the data amount and transmission speed is extracted from the first data, and each data is stored in the data organization table 12.
Store it in the data amount area and transmission speed area above 1. Thereafter, each time data is read from the trace file 14, the data count counter is incremented by "1".

Also, if the contents of the read data are compared with the contents of the previous data and the same data as before was sent, the data count counter is counted up by 1 and the retransmission count counter is also set to 1. Count up. When the final data is read, the time of the final data is stored in the transmission end time area of the data organization table 121, and the data organization is completed.

Next, communication performance is calculated based on the completed data organization table 121 and passed to the calculation result storage section 122.

The communication performance is throughput, transfer efficiency, and retransmission rate, and each is calculated using the following formula using each part of the data organization table 121.

TI! I!　　TEs However, DA is the data amount area, TEI! is the transmission end time area, T’xs is the transmission start time area, Sg is the transmission speed area, CR5 is a retransmission counter, C5 is a data item counter.

FIG. 5 is an explanatory diagram showing the operation of the output section of the embodiment device. The output unit 13 receives the communication performance calculation results from the calculation result storage unit 122, creates a form image in a specified format, and outputs the results to the printer 40.

〔Effect of the invention〕

As explained above, the present invention automatically records data, extracts data, calculates performance, and organizes results in one device, so it is less likely to make simple mistakes due to manual intervention than in the prior art. This has the effect of avoiding this occurrence, improving the reliability of performance analysis, and significantly shortening analysis time.

[Brief explanation of the drawing]

FIG. 1 is a block configuration diagram showing the configuration of an apparatus according to an embodiment of the present invention. FIG. 2 is a block diagram showing the configuration of a system in which the embodiment shown in FIG. 1 is used. FIG. 3 is a diagram illustrating the operation of the recording section of the apparatus of this embodiment. FIG. 4 is a diagram illustrating the operation of the calculation section of the device of this embodiment. FIG. 5 is a diagram illustrating the operation of the output section of the device of this embodiment. 1... Communication satellite, 2a, 2b... Computer, 3
a13b...Satellite earth station, 10.10a, 10b
...Communication performance analysis device, 11...Recording section, 12...
- Calculation unit, 13... Output unit, 14... Trace file, 20... Communication device, 30... CPU 140.
...Printer, 121...Data organization table,...
- Calculation result storage section. Configuration of Example System Figure 2 Configuration of Example Device Figure 1 Operation of Output Section Figure 5

Claims (1)

[Scope of Claims] 1. In a communication performance analysis device connected to a communication device that transmits and receives data via a satellite communication line, the transmission and reception time of this data is added to the attributes of the data transmitted and received by the communication device. A storage means for accumulating information; and a communication start time, communication end time, number of data items, number of retransmissions, data amount, and transmission speed are generated based on the information accumulated by the storage means, and a transmission end time is generated based on the generated information. The throughput is determined by calculating the amount of data sent within the time difference between the transmission end time and the transmission start time, and the ratio of the product of the time difference between the transmission end time and the transmission start time and the transmission speed and the data amount. a calculation means that calculates the transfer efficiency by calculating the transfer efficiency, and determines the retransmission rate by calculating the value of the difference between the number of data items and the number of retransmissions and the value of the ratio between the number of retransmissions; 1. A communication performance analysis device comprising: an output unit that edits and outputs a form image in a format of .