JP4974928B2 - Design support apparatus, design support method, and design support program - Google Patents

Description

  The present invention relates to a design support apparatus, a design support method, and a design support program. The present invention particularly relates to a design support apparatus based on evaluation of fluctuations in transmission delay.

Conventionally, in the development of a communication control program used in a system in which a plurality of communication devices are connected via a network, a designer performs a simulation or the like at the time of design to evaluate fluctuations in data transmission delay (that is, transmission delay). However, on actual machines, the value exceeded the allowable range, and a large number of modifications were often required at the final test stage. This refurbishment was performed by a local network designer based on experience and intuition, changing the communication control program, network setting parameters, the number and configuration of communication devices, etc. on a trial and error basis. Conventionally, when evaluating fluctuations in transmission delay at the time of design, first, after measuring the average and fluctuation of transmission delay for each component using the maintenance measurement value of the network component between communication devices, An average value of transmission delay between communication devices and a statistical value of fluctuation have been obtained (for example, see Patent Document 1).
JP-A-8-340353 (FIG. 2)

  As described above, in the development of communication control programs that are conventionally used in a system in which multiple communication devices are connected via a network, the fluctuation in transmission delay exceeds the allowable range at the final test stage on the actual machine, which is a major renovation. Often required. Since this renovation was performed by local network designers based on experience and intuition, there was a problem that it would take time to identify the cause unless the designers were experienced. In particular, there are many parameters that affect the delay time of data transmission, such as communication control programs, network setting parameters, and the number and configuration of communication devices. Which parameter should be preferentially corrected and evaluated? Since there was no guideline, correction work by trial and error was required, and the refurbishment took a lot of labor and cost.

  An object of the present invention is to facilitate parameter correction work by, for example, showing the degree of influence on transmission delay as an index for each parameter that causes transmission delay in a final test using an actual machine.

A design support apparatus according to an aspect of the present invention includes:
For each of a plurality of parameters set for communication control between a plurality of communication devices, a design support device that evaluates the degree of influence on transmission delay between the plurality of communication devices,
A request value defined in advance for transmission delay between the plurality of communication devices is stored, and for each parameter, a recording medium for storing a current setting value is provided,
For each parameter, a plurality of setting values for evaluation are sequentially set, a transmission delay when each setting value is set is measured, and a transmission delay measuring unit that accumulates the measurement result in a storage device;
For each parameter, a transmission delay extraction unit that reads a current setting value from a recording medium, and extracts a measurement result of transmission delay when the transmission delay measurement unit sets the same setting value as the current setting value;
The required value for transmission delay is read from the recording medium, and for each parameter, the transmission delay measurement result extracted by the transmission delay extraction unit is compared with the required value, and the degree of influence on the transmission delay is processed based on the comparison result. And an influence degree evaluation unit calculated by the apparatus.

  According to one aspect of the present invention, in the design support apparatus, the transmission delay measurement unit sequentially sets a plurality of evaluation setting values for each parameter, and measures the transmission delay when each setting value is set. The transmission delay extraction unit extracts the measurement result of the transmission delay when the transmission delay measurement unit sets the same setting value as the current setting value for each parameter, and the influence degree evaluation unit By comparing the measurement result of the transmission delay extracted by the transmission delay extraction unit with the required value, and calculating the degree of influence on the transmission delay based on the comparison result, the degree of influence on the transmission delay in the final test by the actual machine, Since each parameter that causes a transmission delay can be indicated as an index, the parameter correction work is facilitated.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

Embodiment 1 FIG.
FIG. 1 shows the transmission delay (transmission delay time) between a plurality of communication devices 101 for each of a plurality of parameters (setting parameters) set for communication control between the plurality of communication devices 101 in this embodiment. It is a figure which shows the utilization image of the design support apparatus 102 which evaluates an influence degree.

  In FIG. 1, a communication device 101 is a device that executes a communication control program and transmits / receives the execution result to / from another communication device connected to the communication network 201. The design support apparatus 102 is an apparatus that indicates the degree of influence on transmission delay as an index for each parameter that causes transmission delay, which is an object of the present embodiment. In the present embodiment, the design support apparatus 102 handles the maximum transmission delay as the transmission delay.

  FIG. 2 is a diagram illustrating an example of a hardware configuration of the design support apparatus 102.

  In FIG. 2, a design support apparatus 102 is a computer, a display apparatus 901 having a display screen of a CRT (Cathode / Ray / Tube) or LCD (Liquid Crystal Display), a keyboard 902 (K / B), a mouse 903, and an FDD 904 ( Hardware such as a flexible disk, a drive, a CDD 905 (Compact, a disk, and a drive), and a printer device 906 are provided, and these are connected by a cable or a signal line.

  The design support apparatus 102 includes a CPU 911 (Central Processing Unit) that executes a program. The CPU 911 is an example of a processing device. The CPU 911 includes a ROM 913 (Read / Only / Memory), a RAM 914 (Random / Access / Memory), a communication board 915, a display device 901, a keyboard 902, a mouse 903, an FDD 904, a CDD 905, a printer device 906, and a magnetic disk. It is connected to the device 920 and controls these hardware devices. Instead of the magnetic disk device 920, a recording medium such as an optical disk device or a memory card reader / writer may be used.

  The RAM 914 is an example of a volatile memory. The recording media of the ROM 913, the FDD 904, the CDD 905, and the magnetic disk device 920 are an example of a nonvolatile memory. These are examples of recording media and storage devices. A communication board 915, a keyboard 902, a mouse 903, an FDD 904, a CDD 905, and the like are examples of input devices. The communication board 915, the display device 901, the printer device 906, and the like are examples of output devices.

  The communication board 915 is connected to a LAN (local area network) or the like. The communication board 915 is not limited to a LAN, but is the Internet, or an IP-VPN (Internet, Protocol, Private, Network), a wide area LAN, a WAN (Wide Area Network) such as an ATM (Asynchronous, Transfer, Mode) network, or the like. It does not matter if it is connected to. LAN, the Internet, and WAN are examples of networks. The design support apparatus 102 communicates with the communication device 101 via the network by the communication board 915.

  The magnetic disk device 920 stores an operating system 921 (OS), a window system 922, a program group 923, and a file group 924. The programs in the program group 923 are executed by the CPU 911, the operating system 921, and the window system 922. The program group 923 stores a program for executing a function described as “˜unit” in the description of the present embodiment. The program is read and executed by the CPU 911. The file group 924 is described as “˜data”, “˜information”, “˜ID (identifier)”, “˜flag”, “˜result”, and “˜value” in the description of the present embodiment. Data, information, signal values, variable values, and parameters to be stored are stored as items of “˜file”, “˜database”, and “˜table”. The “˜file”, “˜database”, and “˜table” are stored in a recording medium such as a disk or a memory. Data, information, signal values, variable values, and parameters stored in a recording medium such as a disk or memory are read out to the main memory or cache memory by the CPU 911 via a read / write circuit, and extracted, searched, referenced, compared, and calculated. Used for processing (operation) of the CPU 911 such as calculation / control / output / printing / display. Data, information, signal values, variable values, and parameters are temporarily stored in the main memory, cache memory, and buffer memory during processing of the CPU 911 such as extraction, search, reference, comparison, calculation, control, output, printing, and display. Is remembered.

  In addition, the arrows in the block diagrams and flowcharts used in the description of this embodiment mainly indicate input / output of data and signals, and the data and signals are the memory such as the RAM 914, the flexible disk (FD) of the FDD 904, and the compact of the CDD 905. Recording is performed on a recording medium such as a disk (CD), a magnetic disk of the magnetic disk device 920, another optical disk, a mini disk (MD), or a DVD (Digital Versatile Disc). Data and signals are transmitted by a bus 912, a signal line, a cable, and other transmission media.

  In addition, what is described as “˜unit” in the description of this embodiment may be “˜circuit”, “˜device”, “˜device”, and “˜step”, “˜process”. , “˜procedure”, and “˜processing”. That is, what is described as “˜unit” may be realized by firmware stored in the ROM 913. Alternatively, it may be realized only by software, or only by hardware such as an element, a device, a board, and wiring, or a combination of software and hardware, and further by a combination of firmware. Firmware and software are stored as programs in a recording medium such as a magnetic disk, flexible disk, optical disk, compact disk, minidisk, or DVD. This program is read by the CPU 911 and executed by the CPU 911. That is, the program causes the computer to function as “to part” described in the description of the present embodiment. Alternatively, it causes the computer to execute the procedures and methods described in the description of the present embodiment.

  FIG. 3 is a block diagram illustrating a configuration of the design support apparatus 102.

  The design support apparatus 102 includes a transmission delay measurement unit 103, a fluctuation value DB 104 (database), a communication control program / profile load unit 105, an evaluation communication control program DB 106, an evaluation apparatus profile DB 107, a statistical analysis unit 108, and a fluctuation request evaluation unit. 109, an operation device profile DB 110, and an operation communication control program DB 111. The fluctuation request evaluation unit 109 includes a transmission delay extraction unit 121 and an influence degree evaluation unit 122.

  The transmission delay measuring unit 103 measures the transmission delay time between the two communication devices 101 and accumulates the transmission delay time in the fluctuation value DB 104 for each setting parameter of the communication device 101.

  The fluctuation value DB 104 is a database for storing fluctuation values of transmission delay measured by the transmission delay measuring unit 103, and is mounted on a storage device such as a disk (hard disk) of the magnetic disk device 920 illustrated in FIG. The fluctuation value DB 104 includes a communication control program number stored in the evaluation communication control program DB 106 as a management serial number of the evaluation communication control program used for measurement, and a management serial number of the evaluation device profile used for measurement. As described above, the device profile number stored in the evaluation device profile DB 107 is managed in association with the maximum transmission delay time and the minimum transmission delay time, which are measurement results of fluctuations in transmission delay. The table structure of this DB is shown in FIG.

  The communication control program / profile load unit 105 retrieves the evaluation communication control program and the evaluation device profile necessary for measuring the transmission delay time from the evaluation communication control program DB 106 and the evaluation device profile DB 107, respectively. To load. The device profile is a parameter setting pattern such as network configuration information and network parameters (setting parameters such as transmission method) set in the communication device 101, and the evaluation device profile is a device profile for evaluating fluctuations in transmission delay.

  The evaluation communication control program DB 106 is a database storing an evaluation communication control program used for measurement of transmission delay, and is implemented in a storage device. The table structure of this DB is shown in FIG.

  The evaluation device profile DB 107 is a database in which evaluation device profiles that define network configuration information and network parameters used for measurement of transmission delay are stored in various patterns, and are mounted on a storage device. The table structure of this DB is shown in FIG.

  The statistical analysis unit 108 plots the data accumulated in the fluctuation value DB 104 and creates a graph of the maximum transmission delay time (transmission delay graph) with respect to the setting parameter. An example of the transmission delay graph is shown in FIG. This transmission delay graph is created for each parameter that affects fluctuations in transmission delay time. FIG. 8 shows a flow of an algorithm for creating a transmission delay graph.

  The transmission delay extraction unit 121 of the fluctuation request evaluation unit 109 applies the current setting value (design value) of the parameter to each graph created by the statistical analysis unit 108. The influence evaluation unit 122 of the fluctuation request evaluation unit 109 further applies the fluctuation request value 112 (design request value) to each graph created by the statistical analysis unit 108, and the degree of influence of each parameter on the maximum transmission delay. 2 is obtained by a processing device such as the CPU 911 illustrated in FIG. 2, and is output as an evaluation result 113 to an output device such as the display device 901 illustrated in FIG. The current set value is stored in the operation device profile DB 110 for each parameter. The fluctuation request value 112 is a request value defined in advance for the maximum transmission delay between the plurality of communication devices 101, and is stored in advance in a recording medium such as the hard disk illustrated in FIG.

  The operation device profile DB 110 is a database that stores network configuration information and network parameters used for actual operation as operation device profiles, and is mounted on a recording medium. The table structure of this DB is shown in FIG.

  The operation communication control program DB 111 is a database that stores a communication control program executed by the communication device 101 in a network configuration used for actual operation, and is mounted on a recording medium. The table structure of this DB is shown in FIG.

  The fluctuation request value 112 is an allowable range value of the maximum transmission delay time required from the network design. This value is a value defined from the communication device 101 actually operated by the designer and the network configuration.

  In the evaluation result 113, the influence evaluation unit 122 of the fluctuation request evaluation unit 109 outputs the influence of the maximum transmission delay for each parameter that affects the transmission delay. An example of the evaluation result 113 is shown in FIG.

  FIG. 12 is a flowchart showing the operation of the design support apparatus 102.

  In FIG. 12, the transmission delay measurement unit 103 sequentially sets a plurality of evaluation setting values for each parameter, measures the maximum transmission delay when each setting value is set, and stores the measurement result in the storage device. (Step S101: Transmission delay measurement process). Specifically, first, under the control of the transmission delay measuring unit 103, the communication control program / profile load unit 105 extracts the communication control program for evaluation from the communication control program DB 106 for evaluation and uses the evaluation device profile DB 107 for evaluation. Are loaded into each of the two communication devices 101 that measure fluctuations in transmission delay. Then, the transmission delay measuring unit 103 measures the transmission delay between the two communication devices 101 and stores the measured result in the fluctuation value DB 104. In order to measure the transmission delay time for all parameters when the transmission control program / profile load unit 105 changes the value of one parameter (other parameter values are fixed), the transmission delay measurement unit 103 (1) Loading a communication control program and device profile for evaluation by controlling the communication control program / profile load unit 105, (2) measuring transmission delay, and (3) storing the measurement result in the fluctuation value DB 104. repeat.

  The transmission delay extraction unit 121 of the fluctuation request evaluation unit 109 reads the current setting value for each parameter from the recording medium, and the maximum when the transmission delay measurement unit 103 sets the same setting value as the current setting value in step S101. A transmission delay measurement result is extracted from the storage device (step S102: transmission delay extraction processing). Specifically, first, under the control of the transmission delay extraction unit 121, the statistical analysis unit 108 plots the data accumulated in the fluctuation value DB 104, and a graph of the maximum transmission delay time with respect to one parameter change (transmission delay graph). ) Is created (see FIG. 7). The transmission delay extraction unit 121 controls the statistical analysis unit 108 to create this transmission delay graph for each parameter that affects the fluctuation of the transmission delay time. Then, the transmission delay extraction unit 121 applies the current setting value (design value) of the parameter to each graph created by the statistical analysis unit 108.

  The influence evaluation unit 122 of the fluctuation request evaluation unit 109 reads the request value (fluctuation request value 112) for the maximum transmission delay from the recording medium, and for each parameter, the maximum transmission delay extracted by the transmission delay extraction unit 121 in step S102. Is compared with the required value, and based on the comparison result, the degree of influence on the maximum transmission delay (evaluation result 113) is calculated by the processing device (step S103: influence degree evaluation process). In the present embodiment, the influence degree evaluation unit 122 obtains, for each parameter, a shortage from the measurement result extracted by the transmission delay extraction unit 121 to the required value by the processing device, and each parameter for the sum of the shortage of all parameters. Is calculated as the influence of each parameter. Specifically, the influence degree evaluation unit 122 applies the fluctuation requirement value 112 (design requirement value) to each graph created by the statistical analysis unit 108, and the influence degree (insufficient degree) of each parameter with respect to the maximum transmission delay. ) Is obtained by the following calculation formula and output as the evaluation result 113 (see FIG. 11). Parameters that satisfy the required values are not subject to the following calculation.

<Calculation formula for impact (deficiency)>
Each parameter that affects fluctuation "parameter alpha _1", "parameter alpha _2", · · · and "parameter alpha _n", in the case where the respective deficiency width _{a 1, a 2, ···,} and _{a n} The formula for calculating the deficiency is as follows. FIG. 13 illustrates an insufficient width a ₁ in the case of the parameter α ₁ . In Figure 13, _{X 1} represents the current setting value of the parameter alpha ₁ (the design value).
Influence degree of parameter α ₁ (%) = a ₁ / (a ₁ + a ₂ + a ₃ +... + A _n ) × 100
Influence degree of parameter α ₂ (%) = a ₂ / (a ₁ + a ₂ + a ₃ +... + A _n ) × 100
・
・
・
Influence degree of parameter α _n (%) = a _n / (a ₁ + a ₂ + a ₃ +... + A _n ) × 100

As described above, by applying the present embodiment, the following effects can be obtained.
-When trying to keep the maximum transmission delay within the system requirement range, the effect of the maximum transmission delay is indicated as an index for each parameter causing the problem. It is possible to reduce the burden of the correction work that fits in.

As described above, the design support apparatus described in the present embodiment is
In a design support device that shows the degree of influence of transmission delay for each parameter that causes transmission delay, fluctuations in transmission delay between communication devices are affected by transmission control program data for evaluation and profile data for evaluation. A transmission delay measurement unit that measures by changing parameters, a database that accumulates data of measurement results, a statistical analysis unit that creates a graph of maximum transmission delay for each parameter change from the accumulated data, and each created Provide a fluctuation request evaluation unit that gives the graph a value obtained by extracting operation parameters from the operation communication control program and operation profile and a design requirement value, and outputs the degree of influence of the maximum transmission delay as an evaluation result for each parameter. Features.

Embodiment 2. FIG.
FIG. 14 is a block diagram showing a configuration of the design support apparatus 102 according to the present embodiment.

  Hereinafter, differences from the configuration in the first embodiment will be described. Note that the fluctuation request evaluation unit 109 includes a transmission delay extraction unit 121 and an influence degree evaluation unit 122 as in the first embodiment, but is omitted in FIG.

  In the first embodiment, the design support apparatus 102 shows only the index of the influence of the maximum transmission delay as the evaluation result 113. However, in this embodiment, the design support apparatus 102 improves the evaluation result 113 output in the past. From the accumulation of the value 114, an evaluation result 117 with a comment in which a standard comment of an improvement point is added to the index of the influence degree of the maximum transmission delay is output.

  For each parameter, the parameter adjustment unit 118 accepts an input of the improvement value 114 by the designer from an input device such as the keyboard 902 or the mouse 903 illustrated in FIG. 2, and sets the improvement value 114 as the current setting value. That is, the improvement value 114 is reflected in the operation device profile in the operation device profile DB 110. Further, the parameter adjustment unit 118 associates the evaluation result 113 and the improvement value 114 output from the influence degree evaluation unit 122 of the fluctuation request evaluation unit 109 and stores them in the past case DB 115.

  The improvement value 114 receives the evaluation result 113 output from the influence evaluation unit 122 of the fluctuation request evaluation unit 109, and the designer eliminates or reduces the shortage from the influence included in the evaluation result 113 to the fluctuation request value 112. For this reason, improved content (changed parameter values) is input.

  The past case DB 115 is a database that stores the data of the evaluation result 113 output by the influence degree evaluation unit 122 of the fluctuation request evaluation unit 109 and the improvement value 114 input by the designer, and is implemented in a storage device. The table structure of this DB is shown in FIG.

  The comment generation unit 116 extracts the past evaluation result 113 that is the same as or closest to the evaluation result 113 output from the influence degree evaluation unit 122 of the fluctuation request evaluation unit 109 from the past case DB 115, and extracts the extracted evaluation result. A standard comment is generated from the improvement value 114 attached to 113, and the generated comment (an improvement point comment) is added to the evaluation result 113 and output to the output device.

  The commented evaluation result 117 is the evaluation result 113 output by the comment generation unit 116, which is the output of the influence of the maximum transmission delay for each parameter that affects the transmission delay, and a fixed comment of improvement points. It is. An example of the evaluation result 117 with a comment is shown in FIG.

  FIG. 17 is a flowchart showing the operation of the design support apparatus 102.

  Hereinafter, differences from the operation in the first embodiment will be described.

The comment generation unit 116 extracts, for each parameter, a past comparison result that approximates the comparison result from the storage device every time the influence evaluation unit 122 compares the measurement result with the requested value in step S103, and will be described later. In S105 (in the past), the parameter adjustment unit 118 reads the improvement value 114 stored in association with the past comparison result from the storage device, and outputs a comment based on the improvement value 114 (step S104: comment generation process). Specifically, first, the comment generation unit 116 extracts the past evaluation result 113 closest to the evaluation result 113 output from the influence degree evaluation unit 122 from the past case DB 115. In this extraction, the evaluation result 113 consisting of n parameters is regarded as an n-dimensional coordinate system, and the evaluation result 113 as the comparison source matches the coordinate of the evaluation result 113 as the comparison target, or the distance between the coordinates. Is retrieved by searching the past case DB 115 for those having the shortest and the same order of the coordinates. For example, when the shortage of each parameter of the comparison source is {a, b, c, d} and the shortage of each parameter to be compared is {a ′, b ′, c ′, d ′}, ( ^{a'2 + b'2 + c'2} + d'2) 1/2 is ^{(a 2 + b 2 + c} 2 + d 2) 1/2 to a match, or are most similar, and, a, b, c , D and the evaluation result 113 in which the order of the magnitudes of a ′, b ′, c ′, d ′ coincides are retrieved from the past case DB 115 and extracted. Note that the value of the insufficient width of the parameter that satisfies the fluctuation requirement value 112 (design requirement value) is assumed to be zero. Next, the comment generation unit 116 generates a standard comment (an improvement point comment) from the improvement value 114 associated with the extracted evaluation result 113, adds the generated comment to the evaluation result 113, and the evaluation result 117 with a comment. Output as.

  For each parameter, the parameter adjustment unit 118 refers to the comment output by the comment generation unit 116 in step S104 for an improved value that eliminates or reduces the shortage from the measurement result compared by the influence evaluation unit 122 to the required value. The designer inputs it, sets the improvement value 114 as the current setting value, and associates the comparison result with the improvement value 114 and stores them in the storage device (step S105: parameter adjustment processing). Specifically, first, the parameter adjustment unit 118 receives the evaluation result 113 output from the influence degree evaluation unit 122 and sets the parameter improvement value 114 changed by the designer, thereby changing the maximum transmission delay and the requested value. The evaluation result 113 including the insufficient width and the changed parameter are stored in the past case DB 115 within 112 (design required value) or less.

As described above, by applying the present embodiment, the following effects can be obtained.
-When trying to keep the maximum transmission delay within the system requirement range, the effect of the maximum transmission delay is indicated as an index for each parameter causing the problem. It is possible to reduce the burden of the correction work that fits in.
-When trying to keep the maximum transmission delay within the system requirement range, it is easy to understand the effective correction method by showing the improvement point along with the index of the influence degree of the maximum transmission delay. Can be reduced.

As described above, the design support apparatus described in the present embodiment is
In the design support apparatus described in the first embodiment, the evaluation result output by the design support apparatus and the database for storing the improved values, and the evaluation result that is the same as or similar to the evaluation result output by the design support apparatus have been stored in the past. It is characterized by comprising a comment generation unit that extracts from a database of evaluation results, generates a standard comment of improvement points from the improvement values accumulated along with the extracted evaluation result, and outputs the evaluation result with the standard comment attached To do.

Embodiment 3 FIG.
The configuration of the design support apparatus 102 according to the present embodiment is the same as that shown in FIG. 3 in the first embodiment. Hereinafter, differences from the configuration in the first embodiment will be described.

  In the first embodiment, the design support apparatus 102 shows only the influence index of the maximum transmission delay as the evaluation result 113. However, in the present embodiment, the design support apparatus 102 has an influence degree considering the minimum transmission delay. Indicates an indicator. That is, in this embodiment, the design support apparatus 102 handles the maximum transmission delay and the minimum transmission delay as the transmission delay.

  The statistical analysis unit 108 plots the data accumulated in the fluctuation value DB 104 and creates a graph (transmission delay graph) of the maximum transmission delay time and the minimum transmission delay time with respect to the setting parameter. An example of the transmission delay graph is shown in FIG. This transmission delay graph is created for each parameter that affects fluctuations in transmission delay time. The algorithm flow for creating the transmission delay graph is the same as that shown in FIG. 8 in the first embodiment.

  The transmission delay extraction unit 121 of the fluctuation request evaluation unit 109 applies the current setting value (design value) of the parameter to each graph created by the statistical analysis unit 108. The influence evaluation unit 122 of the fluctuation request evaluation unit 109 further applies the fluctuation request value 112 (design request value) to each graph created by the statistical analysis unit 108, and the maximum transmission delay and the minimum transmission of each parameter. The degree of influence (the degree of deficiency and the margin) on the delay is obtained by the processing device, and is output as the evaluation result 113 to the output device.

  The fluctuation request value 112 is an allowable range value of the maximum transmission delay time and the minimum transmission delay time required from the network design. This value is a value defined from the communication device 101 actually operated by the designer and the network configuration.

  In the evaluation result 113, the influence evaluation unit 122 of the fluctuation request evaluation unit 109 outputs the influence of the maximum transmission delay and the minimum transmission delay for each parameter that affects the transmission delay. An example of the evaluation result 113 is shown in FIG.

  Hereinafter, the operation of the design support apparatus 102 according to the present embodiment will be described with reference to FIG. 12 as in the first embodiment.

  In FIG. 12, the transmission delay measuring unit 103 sequentially sets a plurality of evaluation setting values for each parameter, measures the maximum transmission delay and the minimum transmission delay when each setting value is set, and the measurement result. Are stored in the storage device (step S101: transmission delay measurement processing). Specifically, first, under the control of the transmission delay measuring unit 103, the communication control program / profile load unit 105 extracts the communication control program for evaluation from the communication control program DB 106 for evaluation and uses the evaluation device profile DB 107 for evaluation. Are loaded into each of the two communication devices 101 that measure fluctuations in transmission delay. Then, the transmission delay measuring unit 103 measures the transmission delay between the two communication devices 101 and stores the measured result in the fluctuation value DB 104. In order to measure the transmission delay time for all parameters when the transmission control program / profile load unit 105 changes the value of one parameter (other parameter values are fixed), the transmission delay measurement unit 103 (1) Loading a communication control program and device profile for evaluation by controlling the communication control program / profile load unit 105, (2) measuring transmission delay, and (3) storing the measurement result in the fluctuation value DB 104. repeat.

  The transmission delay extraction unit 121 of the fluctuation request evaluation unit 109 reads the current setting value for each parameter from the recording medium, and the maximum when the transmission delay measurement unit 103 sets the same setting value as the current setting value in step S101. The measurement result of the transmission delay and the measurement result of the minimum transmission delay are extracted from the storage device (step S102: transmission delay extraction process). Specifically, first, under the control of the transmission delay extraction unit 121, the statistical analysis unit 108 plots the data accumulated in the fluctuation value DB 104, and the maximum transmission delay time and the minimum transmission delay time with respect to one parameter change are plotted. A graph (transmission delay graph) is created (see FIG. 18). The transmission delay extraction unit 121 controls the statistical analysis unit 108 to create this transmission delay graph for each parameter that affects the fluctuation of the transmission delay time. Then, the transmission delay extraction unit 121 applies the current setting value (design value) of the parameter to each graph created by the statistical analysis unit 108.

  The influence degree evaluation unit 122 of the fluctuation request evaluation unit 109 reads a request value (fluctuation request value 112) for the maximum transmission delay and the minimum transmission delay from the recording medium, and for each parameter, the transmission delay extraction unit 121 performs step S102. The extracted measurement result of the maximum transmission delay and the measurement result of the minimum transmission delay are respectively compared with the required values, and the degree of influence on the maximum transmission delay and the minimum transmission delay (evaluation result 113) is processed based on the comparison result. (Step S103: influence degree evaluation process). In the present embodiment, for each parameter, the influence degree evaluation unit 122 uses a processing device to calculate the shortage from the measurement result extracted by the transmission delay extraction unit 121 to the required value and the margin from the required value to the measurement result. The ratio of the insufficient width of each parameter to the total of the insufficient widths of all parameters and the ratio of the margin width of each parameter to the total of the margin widths of all parameters are calculated as the degree of influence of each parameter. Specifically, the influence degree evaluation unit 122 applies the fluctuation request value 112 (design request value) to each graph created by the statistical analysis unit 108, and affects the maximum transmission delay and the minimum transmission delay of each parameter. The degree (deficiency and margin) is obtained by the following calculation formula and output as the evaluation result 113 (see FIG. 19).

<Calculation formula for deficiency>
Each parameters affecting the transmission delay "parameter alpha _1", "parameter alpha _2", and ... "parameter alpha _n", each of shortage width _{a 1, a 2, ···,} when the _{a n} The formula for calculating the deficiency is as follows. The parameter in Figure 20 the lack width _{a 1} in the case of alpha _1, the parameter alpha ₂ of the shortage width _{a 2} if the FIG. 21, parameters alpha ₃ of insufficient insufficient width _{a 3-1} when the width _{a 3- 2} is illustrated in FIG. In Figure 20, Y is the current set value of the parameter alpha ₁ (design value), X ₂ is kept within the range of required value 112 fluctuation fluctuation of transmission delay with minimal changes in Y (delay request area) parameter alpha ₁ settings for, X ₁ is representative of the parameter alpha ₁ setting for accommodating the forgiveness range of required value 112 fluctuation fluctuation of transmission delay (delay request area) in the change of Y to the maximum . In Figure 21, L is the current set value of the parameter alpha ₂ (design value), M ₁ is kept within the range of required value 112 fluctuation fluctuation of transmission delay with minimal changes in L (delay request area) parameter alpha ₂ settings for, M ₂ represents a parameter alpha ₂ settings for fall within the scope of the required value 112 fluctuation fluctuation of transmission delay allowed to modify L to the maximum (delay request area) . In Figure 22, Q current setting of the parameter alpha ₃ (design value), since P is kept within the range of required value 112 fluctuation fluctuation of transmission delay with minimal changes in L (delay request area) It represents the set value of the parameter alpha _3.
Degree of parameter α ₁ (%) = a ₁ / (a ₁ + a ₂ + a _3-1 + a _3-2 +... + A _n ) × 100
Insufficient degree of parameter α ₂ (%) = a ₂ / (a ₁ + a ₂ + a _3-1 + a _3-2 +... + A _n ) × 100
Parameter alpha ₃ of deficiency _{(%) = (a 3-1 +} a 3-2) / (a 1 + a 2 + a 3-1 + a 3-2 + ··· + a n) × 100
・
・
・
Deficiency of parameters _{α n (%) = a n} / (a 1 + a 2 + a 3-1 + a 3-2 + ··· + a n) × 100

<Calculation formula for margin>
Each parameters affecting the transmission delay "parameter alpha _1", "parameter alpha _2", and ... "parameter alpha _n", the respective margin width _{b 1, b 2, ···,} when the _{b n} The calculation formula for the margin is as follows. Here, the margin width b ₁ in the case of the parameter α ₁ is shown in FIG. 20, and the margin width b ₂ in the case of the parameter α ₂ is shown in FIG. When there is no margin width as shown in FIG. 22, the margin width is considered to be zero.
Margin of parameter α ₁ (%) = b ₁ / (b ₁ + b ₂ + b ₃ +... + B _n ) × 100
Margin of parameter α ₂ (%) = b ₂ / (b ₁ + b ₂ + b ₃ +... + B _n ) × 100
・
・
・
Margin of parameter α _n (%) = b _n / (b ₁ + b ₂ + b ₃ +... + B _n ) × 100

As described above, by applying the present embodiment, the following effects can be obtained.
-When trying to keep the maximum transmission delay and the minimum transmission delay within the required system range, the effect of the transmission delay is shown as an index for each parameter causing the problem, so the parameters effective for correction can be found. The burden of correction work that falls within the required range can be reduced.

As described above, the design support apparatus described in the present embodiment is
In a design support device that shows the degree of influence of transmission delay for each parameter that causes transmission delay, fluctuations in transmission delay between communication devices are affected by transmission control program data for evaluation and profile data for evaluation. A transmission delay measurement unit that measures by changing parameters, a database that accumulates data of measurement results, a statistical analysis unit that creates a graph of maximum transmission delay and minimum transmission delay for each parameter from the accumulated data, and a statistical analysis unit that creates a graph for each parameter For each graph, the value obtained by extracting the operation parameter from the operation communication control program and the operation profile and the design requirement value are given, and the influence of the maximum transmission delay and the minimum transmission delay is output as the evaluation result for each parameter. A fluctuation request evaluation unit is provided.

Embodiment 4 FIG.
The configuration of the design support apparatus 102 according to the present embodiment is the same as that shown in FIG. 14 in the second embodiment. Hereinafter, differences from the configuration in the third embodiment will be described.

  In the third embodiment, the design support apparatus 102 only shows the indices of the influence of the maximum transmission delay and the minimum transmission delay as the evaluation result 113. However, in the present embodiment, the design support apparatus 102 outputs the evaluations output in the past. Based on the accumulation of the result 113 and the improvement value 114, an evaluation result 117 with a comment in which a standard comment of an improvement point is added to an index of the influence degree of the maximum transmission delay and the minimum transmission delay is output.

  The parameter adjustment unit 118 accepts an input of the improvement value 114 by the designer from the input device for each parameter, and sets the improvement value 114 as the current set value. That is, the improvement value 114 is reflected in the operation device profile in the operation device profile DB 110. Further, the parameter adjustment unit 118 associates the evaluation result 113 and the improvement value 114 output from the influence degree evaluation unit 122 of the fluctuation request evaluation unit 109 and stores them in the past case DB 115.

  The improvement value 114 receives the evaluation result 113 output from the influence evaluation unit 122 of the fluctuation request evaluation unit 109, and the designer eliminates or reduces the shortage from the influence included in the evaluation result 113 to the fluctuation request value 112. For this reason, improved content (changed parameter values) is input.

  The past case DB 115 is a database that stores the data of the evaluation result 113 output by the influence degree evaluation unit 122 of the fluctuation request evaluation unit 109 and the improvement value 114 input by the designer, and is implemented in a storage device. The table configuration of this DB is the same as that shown in FIG. 15 in the second embodiment.

  The comment generation unit 116 extracts the past evaluation result 113 that is the same as or closest to the evaluation result 113 output from the influence degree evaluation unit 122 of the fluctuation request evaluation unit 109 from the past case DB 115, and extracts the extracted evaluation result. A standard comment is generated from the improvement value 114 attached to 113, and the generated comment (an improvement point comment) is added to the evaluation result 113 and output to the output device.

  An evaluation result 117 with a comment is an evaluation result 113 output by the comment generation unit 116, which is obtained by outputting the degree of influence of the maximum transmission delay and the minimum transmission delay for each parameter that affects the transmission delay. Is attached. An example of the evaluation result 117 with a comment is shown in FIG.

  Hereinafter, the operation of the design support apparatus 102 according to the present embodiment will be described using FIG. 17 as in the second embodiment. Hereinafter, differences from the operation in the third embodiment will be described.

The comment generation unit 116 extracts, for each parameter, a past comparison result that approximates the comparison result from the storage device every time the influence evaluation unit 122 compares the measurement result with the requested value in step S103, and will be described later. In S105 (in the past), the parameter adjustment unit 118 reads the improvement value 114 stored in association with the past comparison result from the storage device, and outputs a comment based on the improvement value 114 (step S104: comment generation process). Specifically, first, the comment generation unit 116 extracts the past evaluation result 113 closest to the evaluation result 113 output from the influence degree evaluation unit 122 from the past case DB 115. In this extraction, the evaluation result 113 of the maximum transmission delay and the minimum transmission delay consisting of n parameters is regarded as an n-dimensional coordinate system, and the evaluation result 113 as the comparison source and the coordinates of the evaluation result 113 as the comparison target coincide. Alternatively, it is performed by searching the past case DB 115 for the one having the shortest distance between coordinates and having the same order of coordinates. For example, the insufficient width of each parameter of the comparison source is {a, b, c, d}, the margin width is {e, f, g, h}, and the insufficient width of each parameter to be compared is {a ′, b ', c', d'}, a margin width {e', f', g', when the ^{h'}, (a'2 + b'} 2 + c'2 + d'2) 1/2 - (e' ^{2 + f'2 + g'2 +} h'2) 1/2 is ^{(a 2 + b 2 + c} 2 + d 2) 1/2 - (e 2 + f 2 + g 2 + h 2) 1/2 to a match, or, most And the order of the sizes of a, b, c, d, the order of the sizes of a ′, b ′, c ′, d ′, the order of the sizes of e, f, g, h An evaluation result 113 that matches the order of the sizes of e ′, f ′, g ′, and h ′ is retrieved from the past case DB 115 and extracted. Note that the insufficient width of the parameter that satisfies the fluctuation requirement value 112 (design requirement value) and the margin width of the parameter that does not satisfy the fluctuation requirement value 112 are assumed to be zero. Next, the comment generation unit 116 generates a standard comment (an improvement point comment) from the improvement value 114 associated with the extracted evaluation result 113, adds the generated comment to the evaluation result 113, and the evaluation result 117 with a comment. Output as.

  For each parameter, the parameter adjustment unit 118 refers to the comment output by the comment generation unit 116 in step S104 for an improved value that eliminates or reduces the shortage from the measurement result compared by the influence evaluation unit 122 to the required value. The designer inputs it, sets the improvement value 114 as the current setting value, and associates the comparison result with the improvement value 114 and stores them in the storage device (step S105: parameter adjustment processing). Specifically, first, the parameter adjustment unit 118 receives the evaluation result 113 output from the influence degree evaluation unit 122 and sets the parameter improvement value 114 changed by the designer, whereby the maximum transmission delay and the minimum transmission delay are set. Is stored below the fluctuation requirement value 112 (design requirement value), and the evaluation result 113 including the insufficient width and the margin width and the changed parameters are stored in the past case DB 115.

As described above, by applying the present embodiment, the following effects can be obtained.
-When trying to keep the maximum transmission delay and the minimum transmission delay within the required system range, the effect of the transmission delay is shown as an index for each parameter causing the problem, so the parameters effective for correction can be found. The burden of correction work that falls within the required range can be reduced.
-When trying to keep the maximum transmission delay and the minimum transmission delay within the system requirement range, it is easy to understand the effective correction method by showing the improvement point along with the index of the influence of transmission delay. The burden of correction work to be stored can be reduced.

As described above, the design support apparatus described in the present embodiment is
In the design support apparatus described in the third embodiment, an evaluation result output by the design support apparatus and a database for storing the improved value, and an evaluation result that is the same as or similar to the evaluation result output by the design support apparatus have been stored in the past. It is characterized by comprising a comment generation unit that extracts from a database of evaluation results, generates a standard comment of improvement points from the improvement values accumulated along with the extracted evaluation result, and outputs the evaluation result with the standard comment attached To do.

Embodiment 5 FIG.
FIG. 24 is a block diagram showing a configuration of the design support apparatus 102 according to the present embodiment.

  Hereinafter, differences from the configuration in the third embodiment will be described. Note that the fluctuation request evaluation unit 109 includes a transmission delay extraction unit 121 and an influence degree evaluation unit 122 as in the third embodiment, which are omitted in FIG.

  In the third embodiment, the design support apparatus 102 shows only the indices of the influences of the maximum transmission delay and the minimum transmission delay as the evaluation result 113. However, in the present embodiment, the design support apparatus 102 uses the index (evaluation result 113). ), The parameters are automatically corrected, and the parameters of the communication device 101 are reset.

  The parameter adjustment unit 118 obtains an appropriate correction parameter setting value from the evaluation result 113 output from the influence degree evaluation unit 122 of the fluctuation request evaluation unit 109, and automatically corrects the parameter of the communication device 101. Further, the corrected parameter is reflected in the operation device profile in the operation device profile DB 110.

  FIG. 25 is a flowchart showing the operation of the design support apparatus 102.

  Hereinafter, the difference from the operation in the third embodiment will be described.

  The parameter adjustment unit 118 changes the current setting value of the parameter having the insufficient width every time the influence degree evaluation unit 122 compares the measurement result with the requested value in step S103 (step S105: parameter adjustment processing). As will be described later, the parameter adjustment unit 118 sequentially changes the current setting values of the plurality of parameters until there is no shortage of all parameters.

  Each time the parameter adjustment unit 118 changes the current set value of one parameter in step S105, in step S101, the transmission delay measurement unit 103 measures the transmission delay and outputs the measurement result. In step S <b> 103, the influence degree evaluation unit 122 of the fluctuation request evaluation unit 109 obtains an insufficient width from the transmission delay measurement result output from the transmission delay measurement unit 103 to the requested value by the processing device. In step S105, the parameter adjustment unit 118 repeats changing the current setting values of each parameter until there is no shortage of all the parameters obtained by the influence evaluation unit 122.

  Specifically, from the evaluation result 113 output from the influence evaluation unit 122, the parameter adjustment unit changes the parameter value by the following parameter change algorithm, and the parameters of the operation device profile reflecting the changed parameter are set as the communication device. Set to 101. At this time, the device profile reflecting the changed parameter is stored in the operation device profile DB 110. Two types of parameter changing algorithms are shown below. Examples of transmission delay graphs are shown in FIGS. 26, 27, and 28. FIG.

<Algorithm 1>
(1) The parameter adjustment unit 118 selects a parameter having the largest margin from all parameters that affect transmission delay. If there are a plurality of parameters selected at that time, the parameter adjustment unit 118 selects the parameter having the smallest shortage. Further, when there are a plurality of parameters with the same shortage, the parameter adjustment unit 118 performs the parameter change operation (2) below and the parameter setting and measurement (3) below for all selected parameters. Implement and select the parameter that gives the best results. The parameter with the best result is the one in which the sum of all the deficiencies of the other parameters is the smallest as a result of the parameter change. When there are a plurality of parameters with the best results, the parameter adjustment unit 118 randomly selects one from the parameters. If there is no parameter having a margin, the parameter adjustment unit 118 adds the insufficient width for the maximum transmission delay and the insufficient width for the minimum transmission delay (in the case of FIG. 28, a _3-1 and a _3-2 Select the parameter with the smallest sum. When there are a plurality of parameters having the smallest sum of the insufficient widths, the parameter adjustment unit 118 performs the parameter change operation (2) below and the parameter setting and measurement (3) below among all selected parameters. To select the parameter with the best result. When there are a plurality of parameters with the best results, the parameter adjustment unit 118 randomly selects one of them.
(2) The parameter adjustment unit 118 changes the parameter value so that the delay of the parameter selected in the above (1) satisfies the design requirement. However, changes in parameter values should be kept to a minimum. For example, in the transmission delay graph of FIG. 26, the value Y of the parameter α ₁ is set to X ₂ , and in the transmission delay graph of FIG. 27, the value L of the parameter α ₂ is set to M ₁ and the transmission delay graph of FIG. if the value Q of the parameter α ₃ is the P.
(3) The transmission delay measuring unit 103 sets the parameter changed by the parameter adjusting unit 118 in the communication device 101 and measures the transmission delay. Then, the transmission delay extraction unit 121 of the fluctuation request evaluation unit 109 creates a transmission delay graph of each parameter again, and the influence degree evaluation unit 122 of the fluctuation request evaluation unit 109 again lacks the transmission delay graph of each parameter. Calculate the width and margin.
(4) The parameter adjustment unit 118 repeats the procedures (1) to (3) until all parameters satisfy the design requirement values (until there is no shortage in all delay graphs).

<Algorithm 2>
(1) The parameter adjustment unit 118 selects a parameter with the largest margin from all parameters that affect transmission delay. If there are a plurality of parameters selected at that time, the parameter adjustment unit 118 selects the parameter having the smallest shortage. Further, when there are a plurality of parameters having the same insufficient width, the parameter adjustment unit 118 randomly selects one of the selected parameters. If there is no parameter having a margin, the parameter adjustment unit 118 adds the insufficient width for the maximum transmission delay and the insufficient width for the minimum transmission delay (in the case of FIG. 28, a _3-1 and a _3-2 Select the parameter with the smallest sum. When there are a plurality of parameters having the smallest sum of the insufficient widths, the parameter adjustment unit 118 randomly selects one of the selected parameters.
(2) The parameter adjustment unit 118 changes the parameter value so that the delay of the parameter selected in the above (1) satisfies the design requirement. However, changes in parameter values should be kept to a minimum. For example, in the transmission delay graph of FIG. 26, the value Y of the parameter α ₁ is set to X ₂ , and in the transmission delay graph of FIG. 27, the value L of the parameter α ₂ is set to M ₁ and the transmission delay graph of FIG. if the value Q of the parameter α ₃ is the P.
(3) The transmission delay measuring unit 103 sets the parameter changed by the parameter adjusting unit 118 in the communication device 101 and measures the transmission delay. Then, the transmission delay extraction unit 121 of the fluctuation request evaluation unit 109 creates a transmission delay graph of each parameter again, and the influence degree evaluation unit 122 of the fluctuation request evaluation unit 109 again lacks the transmission delay graph of each parameter. Calculate the width and margin.
(4) The parameter adjustment unit 118 repeats the procedures (1) to (3) until all parameters satisfy the design requirement values (until there is no shortage in all delay graphs).

As described above, by applying the present embodiment, the following effects can be obtained.
・ The degree of influence of the transmission delay of the maximum transmission delay and the minimum transmission delay is obtained as an index for each parameter that causes it, and the parameter is automatically corrected from that index. The burden can be reduced.

As described above, the design support apparatus described in the present embodiment is
The design support apparatus described in the third embodiment includes a parameter adjustment unit that automatically changes a setting parameter of a communication device from an evaluation result output by the design support apparatus and a parameter change algorithm, and satisfies a design requirement value. To do.

  As mentioned above, although embodiment of this invention was described, you may implement combining 2 or more embodiment among these. Alternatively, one of these embodiments may be partially implemented. Or you may implement combining two or more embodiment among these partially.

It is a figure which shows the utilization image of the design assistance apparatus which concerns on Embodiment 1. FIG. 2 is a diagram illustrating an example of a hardware configuration of a design support apparatus according to Embodiment 1. FIG. 1 is a block diagram illustrating a configuration of a design support apparatus according to Embodiment 1. FIG. 4 is a table showing a table configuration of a fluctuation value DB according to the first embodiment. 4 is a table showing a table configuration of an evaluation communication control program DB according to the first embodiment. 4 is a table showing a table configuration of an evaluation apparatus profile DB according to the first embodiment. 6 is a diagram showing an example of a transmission delay graph according to Embodiment 1. FIG. 3 is a flowchart illustrating an algorithm for creating a transmission delay graph according to the first embodiment. 4 is a table showing a table configuration of an operation apparatus profile DB according to the first embodiment. 4 is a table showing a table configuration of an operational communication control program DB according to the first embodiment. It is a figure which shows an example of the evaluation result which concerns on Embodiment 1. FIG. 3 is a flowchart showing the operation of the design support apparatus according to the first embodiment. 6 is a diagram showing an example of a transmission delay graph according to Embodiment 1. FIG. 6 is a block diagram illustrating a configuration of a design support apparatus according to Embodiment 2. FIG. It is a table | surface which shows the table structure of the past example DB which concerns on Embodiment 2. FIG. It is a figure which shows an example of the evaluation result with a comment concerning Embodiment 2. FIG. 6 is a flowchart showing the operation of the design support apparatus according to the second embodiment. FIG. 10 is a diagram illustrating an example of a transmission delay graph according to Embodiment 3. It is a figure which shows an example of the evaluation result which concerns on Embodiment 3. FIG. FIG. 10 is a diagram illustrating an example of a transmission delay graph according to Embodiment 3. FIG. 10 is a diagram illustrating an example of a transmission delay graph according to Embodiment 3. FIG. 10 is a diagram illustrating an example of a transmission delay graph according to Embodiment 3. It is a figure which shows an example of the evaluation result with a comment concerning Embodiment 4. FIG. FIG. 10 is a block diagram illustrating a configuration of a design support apparatus according to a fifth embodiment. 10 is a flowchart showing the operation of the design support apparatus according to the fifth embodiment. FIG. 20 is a diagram showing an example of a transmission delay graph according to the fifth embodiment. FIG. 20 is a diagram showing an example of a transmission delay graph according to the fifth embodiment. FIG. 20 is a diagram showing an example of a transmission delay graph according to the fifth embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 101 Communication apparatus, 102 Design support apparatus, 103 Transmission delay measurement part, 104 Fluctuation value DB, 105 Communication control program profile loading part, 106 Evaluation communication control program DB, 107 Evaluation apparatus profile DB, 108 Statistical analysis part, 109 Fluctuation request evaluation unit, 110 operation device profile DB, 111 operation communication control program DB, 112 fluctuation request value, 113 evaluation result, 114 improvement value, 115 past case DB, 116 comment generation unit, 117 evaluation result with comment, 118 parameter adjustment unit, 121 transmission delay extraction unit, 122 influence degree evaluation unit, 201 communication network, 901 display device, 902 keyboard, 903 mouse, 904 FDD, 905 CDD, 906 printer device, 911 CPU 912 bus, 913 ROM, 914 RAM, 915 communication board, 920 a magnetic disk device, 921 operating system, 922 Window system, 923 Program group, 924 File group.

Claims (7)

For each of a plurality of parameters set for communication control between a plurality of communication devices, a design support device that evaluates the degree of influence on transmission delay between the plurality of communication devices,
A request value defined in advance for transmission delay between the plurality of communication devices is stored, and for each parameter, a recording medium for storing a current setting value is provided,
For each parameter, a plurality of setting values for evaluation are sequentially set, a transmission delay when each setting value is set is measured, and a transmission delay measuring unit that accumulates the measurement result in a storage device;
For each parameter, a transmission delay extraction unit that reads a current setting value from a recording medium, and extracts a measurement result of transmission delay when the transmission delay measurement unit sets the same setting value as the current setting value;
The required value for transmission delay is read from the recording medium, and for each parameter, the transmission delay measurement result extracted by the transmission delay extraction unit is compared with the required value, and the degree of influence on the transmission delay is processed based on the comparison result. A design support apparatus comprising an influence degree evaluation unit calculated by the apparatus.   The design support apparatus according to claim 1, wherein the design support apparatus handles a maximum transmission delay or a maximum transmission delay and a minimum transmission delay as a transmission delay.   For each parameter, the influence degree evaluation unit obtains a shortage from the measurement result extracted by the transmission delay extraction unit to the required value by the processing device, and calculates the ratio of the shortage of each parameter to the total shortage of all parameters. The design support apparatus according to claim 1, wherein the design support apparatus calculates the influence degree of each parameter. The design support device further includes:
For each parameter, the improvement value that eliminates or reduces the shortage from the measurement result compared with the influence evaluation unit to the required value is set as the current setting value, and the comparison result and the improvement value are associated with each other and stored. Parameter adjustment unit to be stored in
For each parameter, each time the influence evaluation unit compares the measurement result with the required value, a past comparison result that approximates the comparison result is extracted from the storage device, and the parameter adjustment unit associates with the past comparison result. 4. The design support apparatus according to claim 1, further comprising: a comment generation unit that reads the improvement value accumulated in a storage device and outputs a comment based on the improvement value. 5. The design support device further includes:
A parameter adjustment unit that sequentially changes the current setting values of the plurality of parameters;
The transmission delay measurement unit measures the transmission delay each time the parameter adjustment unit changes the current setting value of one parameter, and outputs the measurement result.
Each time the parameter adjustment unit changes the current setting value of one parameter, the influence degree evaluation unit uses a processing device to determine the shortage from the transmission delay measurement result output by the transmission delay measurement unit to the required value. Seeking
The said parameter adjustment part repeats the change of the current setting value of each parameter until the shortage of all the parameters which the said influence degree evaluation part calculated | required disappears, The any one of Claim 1 to 4 characterized by the above-mentioned. Design support equipment. For each of a plurality of parameters set for communication control between a plurality of communication devices, a design support method for evaluating the degree of influence on a transmission delay between the plurality of communication devices,
A transmission delay measuring unit of a design support apparatus that includes a recording medium that stores a current setting value for each parameter is stored for each parameter. , Sequentially setting a plurality of set values for evaluation, measuring a transmission delay when each set value is set, and storing the measurement result in a storage device;
The transmission delay extraction unit of the design support device reads the current setting value for each parameter from the recording medium, and the transmission delay measurement result when the transmission delay measurement unit sets the same setting value as the current setting value. Extracting from the storage device;
The degree of influence evaluation unit of the design support apparatus reads a request value for transmission delay from the recording medium, and for each parameter, compares the measurement result of the transmission delay extracted by the transmission delay extraction unit with the request value, and the comparison result And a step of calculating the degree of influence on transmission delay by a processing device based on the above. For each of a plurality of parameters set for communication control between a plurality of communication devices, a design support program for evaluating the degree of influence on a transmission delay between the plurality of communication devices,
A computer having a recording medium for storing a current setting value for each parameter, while storing a predetermined request value for transmission delay between the plurality of communication devices,
For each parameter, a plurality of setting values for evaluation are sequentially set, a transmission delay when each setting value is set is measured, and a transmission delay measurement process for storing the measurement result in a storage device;
For each parameter, a current setting value is read from a recording medium, and a transmission delay extracting process for extracting a transmission delay measurement result from the storage device when the transmission delay measuring process sets the same setting value as the current setting value;
The required value for transmission delay is read from the recording medium, and for each parameter, the transmission delay measurement result extracted by the transmission delay extraction process is compared with the required value, and the degree of influence on the transmission delay is processed based on the comparison result. A design support program for executing an impact evaluation process calculated by an apparatus.

Images