JP3873069B2 - Communication test result display method and communication test apparatus - Google Patents

Description

The present invention relates to a communication test device used for development, testing, evaluation, etc. of a terminal device using a digital communication system, and communication between the terminal device to be developed, tested, evaluated, etc. and the communication test device Signal flow (hereinafter also referred to as “communication sequence” or “sequence”) and measurement of signal physical quantity including signal transmission / reception status and signal power level (corresponding to “detection” in the present invention; the same applies hereinafter). And display. The present invention relates to a technique for facilitating analysis (hereinafter, also referred to as “communication protocol analysis”) between a terminal device and a communication test device and making development, testing, evaluation, and the like of the terminal device and the like even easier.
Especially in communication test equipment that performs pseudo-base station operation used for development, testing, evaluation, etc. of mobile communication terminals such as mobile phones using a digital wireless communication system, communication is influenced by external factors, so it is particularly effective. In the following description, the description will focus on the digital wireless communication system. In the following description, a terminal device and a mobile communication terminal that are targets for development, testing, evaluation, and the like are also referred to as “terminals to be tested”.

  FIGS. 16A and 16B show measurement and display of signal physical quantities including the transmission / reception status of transmission and reception signals and the power level of signals for the development, testing, evaluation and the like of conventional mobile communication terminals such as mobile phones. The configuration for doing this is shown.

  In order to develop, test, and evaluate a mobile communication terminal such as a mobile phone, in FIG. 16A, the mobile communication terminal is connected to a pseudo base station apparatus, and a GSM (Global System for Mobile Communications) system, W -The communication sequence of a communication protocol (hereinafter also referred to as "communication method") in a digital communication system such as a CDMA (Wideband Code Division Multiple Access) method, cdma2000 method, etc. was observed and displayed to analyze the communication contents. .

  FIG. 14 is a display example of a communication sequence display in the pseudo base station apparatus 200 of FIG. In this example, the sequence flow between layers necessary for a predetermined communication protocol is displayed inside the pseudo base station apparatus 200, but it is displayed whether transmission / reception with the connected mobile communication terminal 101 is actually performed. It has not been.

  FIG. 15 is a display example of the detected physical quantity when the pseudo base station apparatus 200 of FIG. 16A has a physical quantity detection function. In this example, a physical quantity detected at a predetermined sampling period is displayed for each communication channel used in a predetermined communication protocol. However, the displayed physical quantity is an instantaneous value, and the change in the signal before and after cannot be read.

  In the form of FIG. 16 (b), in addition to the form shown in FIG. 16 (a), the transmitter test apparatus 300 is connected in parallel with the pseudo base station apparatus 200, and the measurement is performed together with the observation of the communication sequence described above. The physical quantity including the power level of the signal output from the transmitter in the target mobile communication terminal 101 is measured.

  However, in the method of FIG. 16B as well, each sequence indicated by the communication sequence observed and displayed by the pseudo base station apparatus 200 and the measured value of the physical quantity of the signal by the transmitter test apparatus 300 are independent. It took a lot of effort and time to find relevance.

  As a technique for solving this problem, the following Patent Document 1 discloses a communication protocol of a digital wireless device test apparatus for testing a terminal under test having a pseudo base station function for transmitting / receiving a communication protocol of a digital wireless device. Corresponding to each step of the sequence, a physical quantity measuring unit that measures the physical quantity of a signal output from the terminal under test in synchronization with each communication protocol, communication protocol display data from the protocol analyzer unit of the pseudo base station, and the physical quantity There is disclosed a digital radio equipment test apparatus comprising a display section that displays both or one of physical quantity display data synchronized for each communication protocol from a measurement section, and the above.

  According to this technique, a communication protocol test and physical quantity measurement are integrated, and both are displayed on the same screen, thereby realizing an apparatus that makes it easier to test / evaluate / analyze a signal under test.

Japanese Patent No. 3433846

  As described above, in order to facilitate the analysis of communication by displaying the communication flow for development, testing, evaluation, etc. of terminal devices using a digital communication system, the following issues must be realized. I must.

(1) First, instead of displaying only the physical quantity synchronized with each step of the communication protocol sequence, the physical quantity is continuously measured and displayed in parallel with each step of the sequence. The temporal relationship between the sequence and the actually transmitted / received signal can be represented.

(2) Secondly, by measuring the physical quantity of the signal output from the test terminal and measuring the physical quantity of the signal output from the pseudo base station side, the contents of the scenario describing the communication procedure on the pseudo base station side, It is possible to find an abnormality in the output signal from the pseudo base station due to a setting error or the like related to the signal transmitted from the pseudo base station.

(3) The physical quantity is continuously measured in parallel with each step of the communication protocol sequence, the physical quantity at the time between the steps of the communication protocol sequence is also displayed, and the physical quantity generated by each step of the sequence The situation before and after can be confirmed besides the change of.

(4) Measure the physical quantity of each communication channel in a signal in a communication method using a code division multiple access method such as the W-CDMA method or the cdma2000 method in which a plurality of communication channels exist in the same frequency or time zone. Which communication channel is being communicated can be determined.

  However, the invention described in Patent Document 1 has not solved any of the above four problems. The present invention provides a communication test result display method and communication test apparatus for solving the above four problems, facilitating analysis of communication between a mobile communication terminal and a communication test apparatus, and performing test, evaluation and the like more easily. It is intended to provide.

To achieve the above object, the communication test result display method according to claim 1 of the present invention creates sequence log information by detecting the contents of information exchange in communication of a digital communication system that performs communication using a predetermined communication protocol. In a communication test result display method, comprising: a sequence log creating step for displaying, and a step of displaying a sequence log display showing the sequence log information in an identifiable manner
A signal physical quantity measurement step of detecting a physical quantity of a signal corresponding to at least one communication channel among the communication channels defined by the communication protocol, and outputting the physical quantity as a detection value;
A level determination step of determining the presence or absence of communication in the at least one communication channel from the power level included in the detection value, and creating power log information including the determined result;
Displaying a power log display that identifiable the presence or absence of the communication from the power log information;
And a log display step for performing log display for displaying the sequence log display and the power log display side by side in time series.
Through these steps, the sequence log display and the power log display that can identify the presence or absence of communication are displayed side by side in time series.

In the communication test result display method according to claim 2 of the present invention, in addition to the step of claim 1, the sequence log creating step determines the presence / absence of communication data in the at least one communication channel, and the result is displayed in the sequence log. A communication data presence / absence determination stage as part of the information,
The level determination step determines the presence / absence of communication in the at least one communication channel from the determination result of the presence / absence of communication data included in the sequence log information and the power level included in the detection value detected in the signal physical quantity measurement step. And generating power log information including the result of the determination.
By these steps, the presence / absence of communication of at least one communication channel is determined not only by the power level but also by the condition of the presence / absence of data.

In the communication test result display method according to claim 3 of the present invention, in addition to the stage of claim 1 or 2, the sequence log creation stage indicates the time when the contents of the information transfer in the communication are acquired. Associating the first time stamp with the content as the sequence log information,
The signal physical quantity measurement step includes a step of using a second time stamp indicating a time when a physical quantity of a signal corresponding to the at least one communication channel is detected as the detection value in association with the physical quantity;
In the log display step, the first time stamp included in the sequence log information and the first or second time stamp corresponding to the power log information created in the level determination step are arranged in time series. Displaying the sequence log display and the power log display as the log display,
The sequence log arranged in the time series by selecting any item from the items arranged in the time series of the sequence log display displayed in the log display stage or the items arranged in the time series of the power log display An item selection stage that allows selection of any item of display and power log display;
A predetermined time range including the detection value having the second time stamp indicating the time closest to the time indicated by the first time stamp or the second time stamp of the item selected in the item selection step. And a level display step of displaying the power level for the at least one communication channel in a graph from the detected value.
By these steps, the presence or absence of communication of at least one communication channel is determined in the level determination step, and the generated power log information includes the first or second time stamp included in the information when the determination of the presence or absence of communication is confirmed The sequence log display and the power log display displayed in the log display are displayed in a time series. Further, the level display within the time range including the time closest to the time indicated by the time stamp included in the item selected from the log display from these stages is performed.

According to a fourth aspect of the present invention, there is provided a communication test apparatus according to the present invention, wherein the sequence log information is information acquired by sequence information acquisition means for detecting information transfer in communication of a digital communication system that performs communication using a predetermined communication protocol. In a communication test apparatus that displays a sequence log display that indicates that it can be identified,
Signal physical quantity measuring means for detecting a physical quantity of a signal corresponding to at least one of the communication channels defined by the communication protocol and outputting the detected physical quantity;
Level determination means for determining the presence or absence of communication in the at least one communication channel from the power level included in the detection value, and creating and outputting power log information from the determination result;
Displaying means for displaying both the sequence log display and the power log display indicating the presence / absence of communication in the at least one communication channel from the power log information as a log display arranged in time series. And
With this configuration, the sequence log display and the power log display that can identify the presence or absence of communication are displayed side by side in time series.

According to a fifth aspect of the communication test apparatus of the present invention, in addition to the configuration of the fourth aspect, the sequence information acquisition means determines the presence or absence of communication data in the at least one communication channel, and the result is the sequence log information. Communication data presence / absence judging means as a part of
The level determination means is at least one based on a determination result of presence / absence of communication data included in the sequence information created by the sequence information acquisition means and a power level included in a detection value detected by the signal physical quantity measurement means. The presence or absence of communication in one communication channel is determined, and power log information is created and output from the determination result.
With this configuration, the presence / absence of communication of at least one communication channel is determined not only by the power level but also by the condition of the presence / absence of communication data.

According to a sixth aspect of the present invention, in addition to the configuration of the fourth or fifth aspect, the sequence information acquiring unit is configured to receive the sequence information when the sequence information acquiring unit exchanges information in communication. Acquiring the content of information in communication, associating the content of the acquired information with the first time stamp output from the time information generating means representing the time at that time as the sequence log information,
The signal physical quantity measuring means associates the physical quantity detected by the signal physical quantity measuring means with the second time stamp output from the time information generating means indicating the time when it is detected, and sets the detected value.
The first time stamp included in the sequence log information and the first and second time stamps corresponding to the power log information generated and output by the level determination unit are arranged in time series. It has the said display means to display the said power log display as the said log display with the said sequence log display.
With this configuration, acquisition of sequence log information, acquisition of detection values, and generation of power log information are performed independently, and the sequence log display and the power log display are arranged in chronological order to form a log display.

According to a seventh aspect of the present invention, in addition to the configuration of the fourth to sixth aspects, the communication test apparatus further includes a storage unit that stores the sequence log information and the detection value.
The sequence log display showing the sequence log information stored in the storage means in an identifiable manner;
The presence / absence of communication in the at least one communication channel is identified from the power log information created by determining the presence / absence of communication in the at least one communication channel by the level determination unit from the detection value stored in the storage unit. The display means for displaying the power log display as a log display together with the power log display shown as possible is provided.
With this configuration, sequence log information and a detection value corresponding to at least one communication channel are stored, power log information is created from the detection value by the level determination means, and a power log display and a sequence log display together with the stored sequence log information Log display.

In the communication test apparatus according to an eighth aspect of the present invention, in addition to the configurations of the fourth to seventh aspects, the level determination means includes a power level included in the detection value detected by the signal physical quantity measurement means, The presence / absence of communication in the at least one communication channel is determined by comparing a threshold value set in advance according to a target communication channel.
With this configuration, the presence / absence of communication in the target communication channel is determined based on a threshold value set in advance according to the target communication channel.

According to a ninth aspect of the present invention, in addition to the configuration of the fourth to seventh aspects, the level determination means is configured to respond to a power level included in the detection value and a target communication channel in advance. Comparing the set threshold value to determine the presence or absence of communication in the at least one communication channel;
The threshold value includes a first threshold value for determining that there is communication in the at least one communication channel and a second threshold value for determining that there is no communication in the at least one communication channel; The level determination means performs determination having a hysteresis characteristic between the first threshold value and the second threshold value.
With this configuration, level determination with hysteresis characteristics is performed.

According to a tenth aspect of the present invention, in addition to the configurations of the fourth to ninth aspects, the display means is determined by the level determining means, and based on the generated power log information, the at least It is possible to identify, as the power log display, that the state of presence / absence of communication in one communication channel has changed from a state without communication to a state with communication and from a state with communication to a state without communication It is characterized by displaying.
With this configuration, the start and end of communication in at least one communication channel are displayed as identifiable power log displays.

A communication test apparatus according to an eleventh aspect of the present invention is characterized in that, in addition to the configurations of the fourth to tenth aspects, the display means includes a display item setting means capable of setting the power log display to non-display. And
With this configuration, display or non-display of the power log display is set in the log display.

According to a communication test apparatus of a twelfth aspect of the present invention, in addition to the configurations of the fourth to eleventh aspects, the display means is configured such that the log display displayed on the log display screen exceeds a display range of the log display screen. In this case, the log display can be scrolled.
With this configuration, the log display is scrolled up and down for display.

According to a communication test apparatus of a thirteenth aspect of the present invention, in addition to the configuration of the fourth to twelfth aspects, the display unit is arranged in time series of the sequence log display of the log display displayed on the display unit. Item selection means for selecting any item from the sequence display and the power log display arranged in the time series by selecting any item from the items or the items arranged in the time series of the power log display And
Detailed information corresponding to the item selected by the item selection means is displayed as a detailed information display.
With this configuration, detailed information related to sequence log display and power log display is displayed.

According to a communication test apparatus of a fourteenth aspect of the present invention, in addition to the configurations of the fourth to thirteenth aspects, the display means searches for an item relating to a desired communication channel from the power log display, and corresponds to the search. Power log information retrieval means for enabling identification of items is provided.
With this configuration, the power log display of the desired communication channel is searched and identified.

According to a communication test apparatus of a fifteenth aspect of the present invention, in addition to the configuration of the sixth to fourteenth aspects, the display unit is arranged in time sequence of the sequence log display of the log display displayed on the display unit. By selecting an arbitrary item from the displayed items or items arranged in the time series of the power log display, the arbitrary items of the sequence log display and the power log display arranged in the time series can be selected. Having the item selection means;
A predetermined value including the detection value having the second time stamp indicating the time closest to the time indicated by the first time stamp or the second time stamp of the item selected by the item selection means; A level display in which a power level for at least one communication channel is displayed in a graph from the detected value within the time range is performed.
With this configuration, the power level for at least one communication channel is displayed in a graph.

A communication test apparatus according to a sixteenth aspect of the present invention, in addition to the configuration according to the fifteenth aspect, includes the storage unit that stores the sequence log information and the detection value;
The sequence log information stored in the storage means;
The display means for performing the level display from the detection value stored in the storage means is provided.
With this configuration, the sequence log information and the detection value corresponding to at least one communication channel are stored, and the level is displayed from the stored sequence log information and the detection value.

In the communication test apparatus according to claim 17 of the present invention, in addition to the configuration of claim 15 or claim 16, the display means recognizes a communication channel corresponding to the content indicated by the item selected by the item selection means, It has a display information extraction means for displaying the power level related to the communication channel in a graph on the level display.
With this configuration, the level display for the communication channel corresponding to the selected item is performed.

According to a communication test apparatus of an eighteenth aspect of the present invention, in addition to the configuration of the fifteenth or sixteenth aspect, the display means includes a channel selection means for selecting a communication channel to be displayed on the level display, and the channel selection means. And display information extracting means for extracting information related to the display corresponding to the selected communication channel and displaying the information on the level display.
With this configuration, a communication channel is selected and displayed on the level display.

According to a nineteenth aspect of the present invention, in addition to the configuration of the eighteenth aspect of the present invention, the channel selection means selects a plurality of communication channels in order to display power levels related to a plurality of communication channels on the level display. Is possible,
The display information extraction means can extract information related to display corresponding to a plurality of communication channels selected by the channel selection means,
The display means performs the level display based on information related to the display extracted by the display information extraction means.
With this configuration, a plurality of communication channels are set and level display is performed simultaneously.

According to a twentieth aspect of the present invention, in addition to the configurations of the fifteenth to nineteenth aspects, the display unit changes at least one of a time axis scale and a power level axis displayed on the level display. It has a display scale changing means that can be used.
With this configuration, the time scale of the level display and the scale of the power level axis are changed.

According to a twenty-first aspect of the present invention, in addition to the configurations of the fifteenth to twentieth aspects, the signal physical quantity measuring means samples a signal corresponding to the at least one communication channel at a predetermined period. And the display means displays the level display by linearly interpolating the power level included in the detected value detected by the signal physical quantity measuring means.
With this configuration, the level display is performed as a continuous graph of discrete detection values.

According to a twenty-second aspect of the present invention, in addition to the configurations of the fifteenth to twenty-first aspects, the display means can identify the preset threshold value as a corresponding power level on the level display. It is characterized by displaying.
With this configuration, the threshold value that determines the presence or absence of communication in at least one communication channel is visually displayed on the level display.

According to a twenty-third aspect of the present invention, in addition to the configuration of the fifteenth to twenty-second aspects, the display means is configured so that the level display displayed on the level display screen exceeds the display range of the level display screen. Is characterized in that the level display can be scrolled.
With this configuration, the level display is scrolled up and down for display.

According to a communication test apparatus of a twenty-fourth aspect of the present invention, in addition to the configuration of the twelfth or twenty-third aspect, the display means includes a scroll of the log display displayed on the display unit,
It is characterized by having a scroll control means which can selectively set whether the level display scroll displayed on the display unit is linked or not linked.
With this configuration, it is selected that the log display and the level display are scrolled in conjunction with each other or scrolled independently.

  According to the first aspect of the present invention, the communication sequence log information in a predetermined communication protocol and the physical quantity of a signal corresponding to all or a communication channel set by a measurer (hereinafter also referred to as “predetermined communication channel”) are obtained. The detected detection value can be managed separately. For this reason, detection of a physical quantity (hereinafter also referred to as “measurement”) for a signal of a predetermined communication channel in the signal physical quantity measurement stage can be executed independently of the progress of the communication protocol sequence. Further, the presence / absence of communication is determined based on the detected value at the level determination stage, and as a result, power log information is output. The sequence log display and the power log display that enable identification of the sequence log information and the power log information are displayed in time series together, thereby showing the temporal relationship with each other. As a result, it is possible to determine the presence / absence of communication in a predetermined communication channel, and also to see the context of the sequence of a predetermined communication protocol (for example, communication between the respective communication layers). 2 problems can be solved.

  According to the second aspect of the present invention, since the presence / absence of communication is determined on the condition of the power level of the signal corresponding to the predetermined communication channel and the determination result of the presence / absence of communication data of the predetermined communication channel, the W-CDMA system A predetermined communication channel even when a signal corresponding to the predetermined communication channel is output and received regardless of the presence or absence of communication data, such as a communication method using a code division multiple access method such as the cdma2000 method or the like The presence / absence of communication can be determined, and the fourth problem described above can be solved.

  According to the invention of claim 3, the sequence log information has a first time stamp and the detected value has a second time stamp, and is managed. Further, in the power log information indicating the presence / absence of communication determined in the level determination stage from the detection value (and sequence log information), the detection value (or sequence log information) finally determining the presence / absence of communication has. Two (or first) time stamps are associated as they are. Therefore, by selecting an item on the log display screen, the time is specified by the time stamp of the item, and the detection value having the second time stamp indicating the time closest to the time is selected, The power level of a signal of a predetermined communication channel can be displayed in a graph from the detected value having a time stamp in a predetermined time range including the detected value, and the above first to fourth problems can be solved.

  According to the fourth aspect of the invention, it is possible to separately manage communication sequence log information in a predetermined communication protocol and a detection value obtained by detecting a physical quantity of a signal corresponding to a predetermined communication channel. Therefore, the detection of the physical quantity for the signal of the predetermined communication channel by the signal physical quantity measuring means can be executed independently of the progress of the communication protocol sequence. Further, the presence / absence of communication is determined by the level determination means based on the detected value, and power log information is output as the determination result. The sequence log display and the power log display that enable identification of the sequence log information and the power log information are displayed in time series together, thereby showing the temporal relationship with each other. As a result, it is possible to determine the presence / absence of communication in a predetermined communication channel, and also to see the context of the sequence of a predetermined communication protocol (for example, communication between the respective communication layers). 2 problems can be solved.

  According to the invention of the method of claim 5, in order to determine the presence or absence of communication on the condition of the power level of the signal corresponding to the predetermined communication channel and the determination result of the presence or absence of communication data of the predetermined communication channel, W- Regardless of the presence or absence of communication data, such as a communication method using a code division multiple access method such as the CDMA method or the cdma2000 method, a predetermined signal is output even when a signal corresponding to a predetermined communication channel is output and received. The presence or absence of communication in the communication channel can be determined, and the second and fourth problems described above can be solved.

  According to the invention of claim 6, the sequence log information has a first time stamp and the detected value has a second time stamp, and is managed. Further, in the power log information indicating the presence / absence of communication determined in the level determination stage from the detection value (and sequence log information), the detection value (or sequence log information) finally determining the presence / absence of communication has. Two (or first) time stamps are associated as they are. Further, the real time relationship between the sequence log display and the power log display can be seen in the log display by the display means, and the first and second problems described above can be solved.

  According to the seventh aspect of the present invention, not only the log display related to the communication being executed but also the information related to the communication executed in the past can be stored, and the log display can be performed from the stored sequence log information and the detected value. Therefore, the situation can be analyzed after the communication test is performed, and a plurality of stored communication tests can be compared.

  According to the eighth aspect of the present invention, the threshold value for determining the presence or absence of communication in a predetermined communication channel can be set for each predetermined communication channel. Therefore, the presence / absence of communication can be determined at a power level according to the type of the terminal under test that is the object under test.

  According to the invention of claim 9, in the determination of the presence / absence of communication in a predetermined communication channel, the first threshold value for determining that communication is “present” (change from “not present” to “present”); In order to have a second threshold value for determining “none” (change from “present” to “none”), the power level slightly changes in the vicinity of the first and second threshold values. Even in the case of signals, log display can be performed without frequent switching of the presence / absence of communication.

  According to the invention of claim 10, in the power log display, identification is made only when the judgment changes from “No” to “Yes” and when the judgment changes from “Yes” to “No”. Since display is possible, unnecessary updating of the log display can be prevented.

  According to the invention of claim 11, since the power log display on the log display can be hidden, unnecessary information is given to an operator who does not use the power log display (an observer who needs only the sequence log information). In addition, the update of the log display can be reduced.

  According to the invention of claim 12, when the log display exceeds the display range of the log display screen, the log display is continuously updated without stopping the display. Further, by scrolling the log display, it is possible to display a sequence log display or a power log display at an arbitrary time going back in the past.

  According to the invention of claim 13, by displaying the communication channel name, data contents, physical quantity, etc. associated with the item selected from the sequence log display and the power log display displayed in the log display as a detailed information display, the operator Information other than the sequence flow and the presence / absence of communication can be provided to the (observer).

  According to the invention of claim 14, since information on a desired communication channel can be searched from the power log display, information on the desired communication channel can be easily and quickly in a long-time communication test with a mobile communication terminal. Can be found.

  According to the invention of claim 15, by selecting an item displayed in the sequence log display or the power log display on the log display screen, the item has the second time stamp closest to the time stamp of the item. The power level of the signal of the predetermined communication channel can be displayed in a graph from the detection value including the detection value and having the second time stamp in the predetermined time range. Because of these effects, the power level of a signal of a predetermined communication channel can be seen even in a communication system using a code division multiple access system or the like, and the first to fourth problems described above can be solved.

  According to the invention of claim 16, not only the level display related to the communication being executed but also the information related to the communication executed in the past can be stored, and the level display can be performed from the stored sequence log information and the detected value. It is also possible to analyze the situation slowly after the communication test is performed, and to compare a plurality of stored communication tests.

  According to the invention of claim 17, by selecting an item of sequence log display or power log display on a log display screen, a communication channel related to the selected item is discriminated (channel name etc.) and level. Can be displayed.

  According to the eighteenth aspect of the present invention, the communication channel for level display can be arbitrarily selected.

  According to the nineteenth aspect of the present invention, the power levels related to a plurality of communication channels can be displayed on the level display in parallel, and the relationship of the power change of each communication channel can be viewed.

  According to the twentieth aspect of the present invention, the time axis scale of the level display and the scale of the power level axis can be arbitrarily changed and set, so that the point of interest can be enlarged and displayed.

  According to the invention of claim 21, since the detected value is a discrete numerical value obtained by detecting a physical quantity of a predetermined communication channel at a predetermined sampling period, linearly interpolates between the detected values and displays them on the level display. It can be recognized as a continuous power level change. Therefore, it is possible to solve the third problem more easily.

  According to the invention of claim 22, by displaying a preset threshold value for determining the presence or absence of communication for a predetermined communication channel so as to be visually identifiable at the corresponding power level on the level display. Even on the level display, the power level determination criteria in the level determination means can be captured intuitively.

  According to the invention of claim 23, when the level display exceeds the display range of the level display screen, the display is continuously updated without stopping. Furthermore, by scrolling the level display, it is possible to display a level display at an arbitrary time retroactively.

  According to the invention of claim 24, since the scroll of the log display and the scroll of the level display can be set to “linked” and “non-linked”, the log display scrolls when “linked” is set. Alternatively, by scrolling one of the level displays, the other display can be scrolled in accordance with the time stamp displayed by scrolling. When “non-interlocking” is set, the log display and the level display scroll can operate independently.

  Furthermore, even if the communication of the predetermined communication channel expected on the power log display does not appear, it is possible to check whether the cause is that the signal level for the predetermined communication channel is low by looking at the level display. It is possible to easily and quickly analyze whether it is not present, whether the description method of the scenario describing the communication procedure according to the communication protocol is bad, or other reasons.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, a digital wireless communication system among the digital communication systems will be described.

  In the following description, a communication operation (hereinafter also referred to as “communication under test”) between the mobile communication terminal 101 using the W-CDMA system as a communication protocol and the communication test apparatus 100 serving as the pseudo base station is described. As an example.

  As for the communication direction, unless otherwise described, the direction from the mobile communication terminal 101 to the communication test apparatus 100 is “reception” or “uplink”, and the direction from the communication test apparatus 100 to the mobile communication terminal 101 is “transmission”. "Or" down ".

  1 and 2 show a configuration of a communication test apparatus 100 for a digital wireless communication system to which the present invention is applied. Representative display examples are shown in FIGS.

  The solid arrows connecting the constituent elements (functional blocks) shown in FIGS. 1 and 2 indicate the flow of information, and the alternate long and short dashed arrows indicate the control lines. Of the solid arrows, the thick arrows indicate the flow of information regarding the power log display 9 and the level display 52.

First, the configuration of an embodiment of the present invention will be described with reference to FIG.
The communication test apparatus 100 according to the present invention includes a pseudo base station unit 102 that communicates between a mobile communication terminal 101 and a digital wireless communication system using a predetermined communication protocol, and communication between the mobile communication terminal 101 and the pseudo base station unit 102. The sequence information acquisition means 103 that acquires information related to the protocol sequence, creates and outputs sequence log information, and the physical quantity of signals for all or a communication channel set by the measurer (hereinafter also referred to as “predetermined communication channel”). Signal physical quantity measuring means 104 that detects and creates a detection value and outputs it, sequence log information created by the sequence information acquisition means 103, and time for use as a time stamp in the detection value created by the signal physical quantity measurement means 104 Time information generating means 105 for generating information and sequence log information A storage means 106 for storing detection values and information indicating procedures related to the operation of the communication test apparatus 100; a level determination means 107 for determining presence / absence of communication in a predetermined channel from the detection values and sequence log information; From the threshold setting means 114 for setting the threshold value input from the input means 115 for the determination means 107 to compare with the power level included in the detection value, the sequence information acquisition means 103, and the signal physical quantity measurement means 104, Alternatively, the display unit 108 is configured to display sequence log information from the storage unit 106 and a result determined by the level determination unit 107 based on the detected value.

  The sequence information acquisition unit 103 acquires information related to the communication sequence between the mobile communication terminal 101 and the pseudo base station unit 102 and associates the first time stamp 11a indicated by the time generation unit 105 with the sequence log information. . Further, the sequence information acquisition unit 103 includes a transmission data presence / absence determination unit 103a that determines the presence / absence of communication data related to transmission and a communication related to reception in order to determine whether communication data actually exists in communication of a predetermined communication channel. A reception data presence / absence determination unit 103b for determining the presence / absence of data, and the determination result of the presence / absence of communication data related to transmission and the determination result of the presence / absence of communication data related to reception are associated with the first time stamp 11a and sequence log information To be part of

Hereinafter, the transmission data presence / absence determination unit 103a and the reception data presence / absence determination unit 103b may be collectively referred to as “communication data presence / absence determination unit”.
The determination of the presence / absence of communication data related to transmission and the determination of the presence / absence of communication data related to reception are collectively referred to as “determination of presence / absence of communication data”.

  The signal physical quantity measuring unit 104 detects a physical quantity such as power, frequency, frequency spectrum, etc. of a signal related to communication between the mobile communication terminal 101 and the pseudo base station unit 102 at a predetermined sampling period. The second time stamp 11b is associated with the detected value. Further, the signal physical quantity measuring means 104 includes a transmission signal measuring means 104a for detecting a physical quantity of a signal related to communication transmission in a predetermined communication channel, and a received signal measuring means 104b for detecting a physical quantity of a signal related to reception. Yes.

  The storage unit 106 includes a sequence log storage unit 106 a that stores the sequence log information acquired by the sequence information acquisition unit 103, and a detection value storage unit 106 b that stores the detection value detected by the signal physical quantity measurement unit 104. .

The level determination unit 107 compares the power level included in the detection value for the predetermined communication channel with the threshold value set in the threshold setting unit 114, and the presence / absence of communication data in the predetermined channel included in the sequence log information. The presence / absence of communication of a predetermined communication channel is determined from the logical product (AND condition) with the determination result, and output as power log information.
However, when the communication method is other than the code division multiple access method (for example, GSM) or the communication channel (for example, in the case of the W-CDMA method) using a burst signal even in the code division multiple access method, In the case of RACH (Random Access Channel (Burst signal)), the presence or absence of communication can be determined only by comparing the power level and the threshold value.

  The display unit 108 includes a display information extraction unit 109, a level display generation unit 110, a display control unit 111, a display unit 112, and a setting selection unit 113.

  The display information extraction unit 109 determines whether or not there is communication in the predetermined communication channel from the sequence log information from the sequence information acquisition unit 103 and the level determination unit 107 according to the information related to the extraction of display information from the setting selection unit 113. Information necessary for display is extracted from the power log information including the information.

  The level display generation unit 110 generates information related to the display of the level display 52 that graphically displays the power level of a signal related to a predetermined communication channel from the information necessary for display extracted by the display information extraction unit 109.

  The display control unit 111 receives information from the display information extraction unit 109, the level display generation unit 110, and the setting selection unit 113, and generates and displays image data such as the sequence log display 10, the power log display 9, and the level display 52. Control to display the screen on the unit 112 is performed.

  The setting selection unit 113 includes a channel selection unit 113a, a display position control unit 113b, a scroll control unit 113c, a display item setting unit 113d, a display scale change unit 113e, an item selection unit 113f, and a power log information search unit. 113g.

  The channel selection means 113a selects a communication channel displayed on the level display 52. This communication channel can be set for a plurality of communication channels. Further, even when a communication channel is not set, a communication channel related to a call can be automatically set and selected as a default according to a communication protocol for performing communication under test.

  Note that the communication channel displayed on the power log display 9 in the log display 15 can be selected as a specific communication channel by selecting the communication channel with the channel selection means 113a.

  The display position control unit 113b controls the number of items to be displayed and the time range from the total number of items of information to be displayed on the log display 15 or the level display 52, the time range of the time stamp, and the like. Furthermore, the display position control means 113b activates the scroll control means 113c when the display content of the log display 15 or the level display 52 does not fit on one screen.

  The scroll control means 113 c gives a scroll instruction to each screen by operating the input means 115. The scroll control means 113c performs an operation that enables the scrolling of the log display 15 and the level display 52 to be independently scrolled, and an operation that enables the scrolling of the log display 15 and the level display 52 to be scrollable in conjunction with each other. Control can be performed according to the contents set by the input means 115.

  The display item setting means 113d can set display or non-display (hereinafter also referred to as “display / non-display”) of the display of the power log display 9 of the log display 15 and the layer display of the sequence log display 10.

  The display scale changing unit 113e can change the display scale of the time axis (vertical axis) of the graph displayed on the level display 52 and the axis (horizontal axis) representing the power level.

  The item selection means 113f selects an arbitrary item using the input means 115 from the items of the log display 15 displayed in time series together with the power log display 9 and the sequence log display 10. Further, various buttons displayed on the log display screen 1 and the level display screen 51 are selected (pressed) and their setting items are selected (pressed).

  The power log information search means 113g searches the displayed power log display 9 for items that match the search conditions input from the input means 115.

  The threshold setting means 114 is set with a threshold value used by the level determination means 107 to determine whether or not there is communication on a predetermined communication channel. The threshold setting means 114 has a plurality of predetermined communication channels when the threshold values are all set in common, when the uplink and downlink communication channels are set separately, and when all the communication channels to be measured are set individually. If set, any state of the combination can be accommodated.

  FIG. 2 shows the configuration of one embodiment of the details of the pseudo base station means 102 described in FIG. 1, and the relationship between the pseudo base station means 102, the sequence information acquisition means 103, and the signal physical quantity measuring means 104. . The configuration will be described below with reference to FIG.

  The pseudo base station means 102 includes an RF (Radio Frequency) input / output unit 102a, a transmission processing unit 102b, a reception processing unit 102c, and a communication control unit 102d that performs control and control of transmission / reception data. ing.

  The RF input / output unit 102a transmits and receives a radio signal (hereinafter also referred to as “RF signal”) for communicating with the mobile communication terminal 101 (shown in FIG. 1). Mutual conversion is performed.

  Further, in a communication method using a code division multiple access method in which a plurality of communication channels exist in the same frequency and time zone, such as the W-CDMA method and the cdma2000 method, an RF signal that is simply transmitted and received Since the physical quantity related to each communication channel cannot be detected even if the physical quantity of the transmission is detected, the transmission processing unit 102b and the reception processing unit 102c include the physical quantity information related to the individual communication channel (including information related to the signal physical quantity measuring unit 104 and the sequence). Communication data) is output to the sequence information acquisition means 103. In the following description, the physical quantity will be described on behalf of “power level”.

First, the operation related to transmission will be described.
The transmission processing unit 102b includes a coder unit 102b3, a spreading unit 102b2, and an output IF (Intermediate Frequency) processing unit 102b1.

  Transmission data for each communication channel from the communication control unit 102d is input to the coder unit 102b3, subjected to encoding processing in accordance with a predetermined communication protocol standard, and output to the spreading unit 102b2. Further, the coder unit 102b3 outputs information related to transmission data for each communication channel from the input transmission data to the transmission data presence / absence determination unit 103a, and the transmission data presence / absence determination unit 103a receives each communication input from the coder unit 102b3. The presence / absence of transmission data is determined from information related to transmission data for the channel, and the result is sequence log information.

  The transmission data encoded and input to the spreading unit 102b2 is subjected to spreading processing in accordance with a channelization code and a symbol rate predetermined for each communication channel, and is output to the output IF processing unit 102b1 as a transmission baseband signal. The In addition, all power levels transmitted as RF signals are set in the spreading unit 102b2, and the power level of each communication channel with respect to all power levels is also set. Spreading section 102b2 outputs the set total power level and the power level of each communication channel to transmission signal measuring means 104a. The transmission signal measuring means 104a detects the power level for each communication channel and uses it as a detection value.

  The spread transmission data is input to the output IF processing unit 102b1, subjected to orthogonal modulation processing, and output to the RF input / output unit 102a as an intermediate frequency signal. The RF input / output unit 102a converts the input intermediate frequency signal (transmission data) into an RF signal (hereinafter also referred to as “transmission signal”) and outputs the RF signal.

Next, operations related to reception will be described.
The reception processing unit 102c includes an input IF processing unit 102c1, a despreading unit 102c2, and a decoder unit 102c3.

  An RF signal (hereinafter also referred to as “received signal”) received from the mobile communication terminal 101 is converted into an intermediate frequency signal by the RF input / output unit and output to the input IF processing unit 102c1.

  The intermediate frequency signal input to the input IF processing unit 102c1 is demodulated and output to the despreading unit 102c2 as a reception baseband signal.

  The received baseband signal input to the despreading section 102c2 is subjected to despreading processing in accordance with a channelization code and a symbol rate that are determined in advance for each communication channel, and is received as coded reception data for each communication channel. The data is output to the decoder unit 102c3. Further, the despreading section 102c2 outputs information on the total power level obtained by despreading and the power level of each communication channel to the received signal measuring means 104b. The received signal measuring means 104b detects the power level for each communication channel and uses it as a detected value.

The encoded received data for each communication channel input to the decoder unit 102c3 is subjected to decoding processing in accordance with a predetermined communication protocol standard, and is output to the communication control unit 102d as received data for each communication channel. . In addition, the decoder unit 102c3 outputs information related to the received data for each communication channel to the received data presence / absence determining unit 103b. The received data presence / absence determining unit 103b determines the presence / absence of received data and uses the determination result as sequence log information. Yes.
However, a signal having a preamble such as RACH (Random Access Channel), which is one communication channel in the W-CDMA system, is used for processing inside the apparatus even when data is included in the preamble part. It is not necessary to output to the received data presence / absence determining means 103b.

  In addition to the configuration described above, the signal physical quantity measuring means 104 detects the physical quantity of the transmitted RF signal and outputs it to the transmission signal measuring means 104a, detects the physical quantity of the received RF signal, and sends it to the received signal measuring means 104b. RF signal measuring means 104c for outputting is provided.

  Since the RF signal measuring means 104c can detect the physical quantity of the RF signal, each communication channel is used when the communication protocol is a communication method in which only a specific communication channel exists in the same frequency and time zone as in the GSM method. The physical quantity of can be detected.

  Further, when a code division multiple access method in which a plurality of communication channels exist at the same frequency or time zone, such as a W-CDMA method, is used, the physical quantity of the GSM method is detected. In the configuration, only the entire power level of the transmitted transmission signal can be measured. Therefore, as described above, the physical quantity relating to the transmission signal is detected using the output of the transmission processing unit 102b. However, by providing the RF signal measuring means 104c with the same configuration as the above-described reception processing unit 102c, the power level of each communication channel can be detected from the actually output transmission signal and output to the transmission signal measuring means 104a. You can also. Note that the physical quantity of each received channel of the received signal received may be detected in the same manner by the RF signal measuring means 104c, or may be detected by the reception processing unit 102c having the same configuration. .

  FIG. 3 shows an example of a screen relating to log display of the communication test apparatus 100 embodying the present invention. The configuration of the screen will be described below based on the drawings.

  The log display screen 1 includes function buttons 2 to 7 for executing each function, a log display 15 constituted by a display described later, an item selection display 12 indicating the selection status of each item displayed on the log display 15, A scroll bar 13 for scrolling the log display 15 and a detailed information display 14 showing detailed information related to the item selected in the item selection display 12 on the log display 15 are displayed.

  The function buttons 2 to 7 are a start button (Start) 2 for starting the test, a stop button (Stop) 3 for ending the test, an option setting button (Option) 4 for performing various settings, and a level display screen 51 described later. Level display setting button (Power) 5, a save button (Save) 6 for storing displayed or acquired data, and a load button (Load) 7 for calling stored data.

  The log display 15 is based on the power level information included in the detection value of the signal of the predetermined communication channel and the power log information determined by the level determination unit 107 from the determination result of the presence / absence of communication data included in the sequence log information. The power log display 9 that displays the presence / absence of communication arranged in time series, the sequence log display 10 that displays sequence log information in communication arranged in time series, and the display information extraction means 109 extracted from the power log information A time stamp 11 displaying the first or second time stamp (11a, 11b) possessed by each item and the first time stamp 11a possessed by each item extracted from the sequence log information by the display information extracting means 109; The sequence log display 10 and the power log display 9 at the time indicated by the time stamp 11 Combined is composed of an item number 8 representing the number of each item (row) that are arranged in time series.

  FIG. 4 shows an example of a screen relating to the display of the power level of a signal related to a predetermined communication channel of the communication test apparatus 100 embodying the present invention. The configuration of the screen will be described below based on the drawings.

  The level display screen 51 represents a level display 52 that displays a power level included in a detection value of a signal of a predetermined communication channel in a predetermined communication protocol on a time axis, and a time on the time axis displayed on the level display 52. The time axis time stamp 55, the cursor 56 indicating the position on the time axis of the second time stamp 11b closest to the time indicated by the time stamp 11 included in the item selected in the log display 15, and the scroll of the level display 52 A scroll bar 57 for performing the above operation, a downlink channel setting button (DLCH) 58 for designating a downlink communication channel to be displayed on the level display 52, and an uplink for designating the uplink communication channel to be displayed on the level display 52. A channel setting button (ULCH) 59 is formed and displayed.

  The level display 52 includes a downlink channel level display 53 that displays the power level of the downlink channel as a graph, and an uplink channel level display 54 that displays the power level of the uplink channel as a graph.

  In the example of FIG. 4, in order to use it in common in the downlink channel level display 53 and the uplink channel level display 54, the vertical axis is displayed on the time display, and the horizontal axis is displayed on the level display 52 as an axis indicating the power level.

  On the time axis, in order to make it possible to identify when the graphs indicating the power levels displayed in the downlink channel level display 53 and the uplink channel level display 54 are identified, the second detection value corresponding to the displayed power level has a second value. The time axis time stamp 55 is displayed at a predetermined interval based on the time stamp 11b.

  The downlink channel level display 53 is a power level based on a channel name 53b representing the channel name of the downlink channel for which the level display 52 is performed, and a detection value measured at a predetermined sampling period for the channel represented by the channel name 53b. Is a detected value level 53c displayed by plot display or linear interpolation or the like for a predetermined time range, and a downlink channel threshold value 53d displaying a threshold value for determining presence / absence of downlink communication displayed on the power log display 9; It is composed and displayed.

  The upstream channel level display 54 is a power level based on a channel name 54b representing the channel name of the upstream channel for which the level display 52 is performed, and a detection value measured at a predetermined sampling period for the channel represented by the channel name 54b. Is a detected value level 54c displayed by plot display or linear interpolation for a predetermined time range, and an uplink channel threshold value 54d displaying a threshold value for determining the presence or absence of uplink communication displayed on the power log display 9. It is composed and displayed.

  In the above description, the detection value levels 53c and 54c are described as plot display or linear interpolation, but may be displayed using other interpolation methods.

Example 1
The operation for realizing the display of FIG. 3 will be described together with the operation of the configuration of FIGS.

  The communication test apparatus 100 communicates with the mobile communication terminal 101 via the pseudo base station means 102 in accordance with a W-CDMA communication protocol. The communication by the pseudo base station means 102 may operate based on an operation procedure (hereinafter also referred to as “registered operation procedure”) predetermined in the communication test apparatus 100, or a file (not shown) defining the operation procedure. (Hereinafter also referred to as “scenario”) may be registered in the communication test apparatus 100 and operated based on it. The registration operation procedure and the scenario are stored in the storage unit 106 and can be accessed from the pseudo base station unit 102, the sequence information acquisition unit 103, the signal physical quantity measurement unit 104, and the display unit 108.

  A “channel name” indicating an individual communication channel is determined by a communication protocol (W-CDMA in this description) for performing a communication test, and is defined by a registration operation procedure and a scenario. The type of message transmitted and received by communication is also determined as a “message type” by the communication protocol (W-CDMA in this description), and is defined by the registration operation procedure and scenario. Communication tests on “channelization code” for spreading (spread spectrum processing) and despreading (spread spectrum processing) for communication contents of each communication channel and “symbol rate” for determining the communication speed with that code At this time, it is defined in association with each communication channel in the registration operation procedure and scenario.

  The information about the sequence obtained by the communication under test includes the communication channel related to the communication under test monitored and determined by the sequence information acquisition unit 103, the determination result of the presence / absence of communication data, the layer in which communication was performed (example in FIG. 3) “PHY (Physical layer)”, “MAC (Medium Access Control)”, “RLC (Radio Link Control)”, “RRC (Radio Resource Control)” The information displayed by the communication protocol and the internal configuration of the communication test apparatus 100 and its name are different), the direction of communication, the content of communication, and the time when the information was acquired. The time indicated by the information generating means 105 is set to the first time. A log display screen that is associated as a time stamp 11a, is used as sequence log information, is extracted by the display information extraction means 109 in the display means 108, and information necessary for display is displayed on the display 112 via the display control means 111 1 is displayed as the sequence log display 10 on the log display 15 above.

The extraction process by the display information extraction unit 109 is performed by, for example, displaying the sequence log information regarding each communication layer included in the sequence log information between the PHY layer and the MAC layer based on the first time stamp 11a included in the sequence log information. 10a, MAC layer-RLC layer display 10b, RLC layer-RRC layer display 10c, the communication direction of each sequence is determined, and the first time stamp 11a included in the sequence log information related to each communication layer Are arranged in chronological order.
At this time, information unnecessary for display in the sequence log display 10 is not extracted.

  The first time stamp 11a included in the sequence log information regarding each communication layer is displayed as the time stamp 11 on the same line as the corresponding item displayed on the sequence log display 10 in the extraction process.

  The sequence log information is sent to the level determination means 107 and the display information extraction means 109 in order to determine the presence or absence of communication, and is stored in the sequence log storage unit 106a in the storage means 106.

  For the communication under test, the display unit 108 controls the sequence log storage unit 106a, reads the stored sequence log information from the sequence log storage unit 106a, and the sequence log information is extracted from the level determination unit 107 and the display information. The sequence log display 10 can also be displayed by being sent to the means 109.

Next, an operation for realizing the power log display 9 (9a, 9b, 9c, 9d) will be described.
The power log display 9 includes the detection value detected by the signal physical quantity measuring unit 104 and associated with the second time stamp 11b, and the presence / absence of communication data acquired by the sequence information acquiring unit 103 and associated with the first time stamp 11a. And the determination result.
However, if the communication method is other than the code division multiple access method as described above, or if it is a communication channel that uses burst signals even in the code division multiple access method, the power level and the threshold value are Whether or not there is communication can be determined only by comparing the two.

  The power level related to the predetermined communication channel included in the detection value detected by the signal physical quantity measuring unit 104 is compared with the threshold value set in the threshold setting unit 114 in advance by the level determining unit 107, and the power level is greater than the threshold value. In the case (or above), the communication is determined to be “present”, and the second time stamp of the determined detection value is associated with the determination result, and is output to the display information extracting unit 109 as power log information.

  For example, when the communication method is a code division multiple access method, it is not possible to determine the presence / absence of communication on a predetermined communication channel only by the signal power level. In this case, the level determination unit 107 adds final determination result information on the presence / absence of communication data related to a predetermined communication channel included in the sequence log information to the above-described determination condition for the presence / absence of communication at the power level. Is output to the display information extraction unit 109 as power log information.

In this case, the determination result of the presence / absence of communication is associated with a time stamp of information (sequence log information or detection value) that finally determines the presence / absence of communication, and is used as power log information. In other words, when the power level of the detection value for a given communication channel is greater than (or higher than) the threshold value, and the determination result for the presence or absence of communication data for the corresponding communication channel in the sequence log information is “Yes” The power log information is associated with the first time stamp of the sequence log information.
The front-rear relationship between the detected value and the sequence log information is determined by the time stamp that each has.

The determination by the level determination means 107 is performed according to the following procedure.
Step 1: It is determined whether the input detection value is for a predetermined communication channel.
Step 2: If it is a detection value of a predetermined communication channel, it is compared with a corresponding threshold value set in advance in the threshold setting means 114.
Step 3: As a result of comparison, if the detected value is larger (or higher) than the threshold value, the communication is “present”, and if it is smaller (or smaller), the communication is “not present”. Are associated with each other as a first determination result.
Step 4: It is determined whether the determination result of the presence / absence of communication data included in the input sequence log information is for a predetermined communication channel.
Step 5: In the case of a determination result of the presence / absence of communication data for a predetermined communication channel, the determination result is confirmed.
Step 6: When the determination result of the presence / absence of communication data is “communication data present”, the communication is “present”, and when the determination result of the presence / absence of communication data is “no communication data”, the communication is determined as “absent”. The second determination result is obtained by associating the first time stamp included in the target sequence log information.
Step 7: When the second determination result is “present”, the time stamp indicating the closest time before the first time stamp indicating the time is searched.
If the determination result having the adjacent time stamp is the first determination result and the communication is “present”, the final determination result is “present” and the second time stamp included in the first determination result is used. Correlate to power log information. Here, when the first determination result is “none”, the final determination result is “none”.
Step 8: Steps 1 to 7 are repeated until the communication test is completed.

If it is not necessary to determine the presence or absence of communication data, the first determination result in step 3 is the final determination result, and steps 1 to 3 are repeated.
Further, the display information is extracted from the power log information by the display information extracting means 109 and displayed as the power log display 9.

  For past communications under test, the display means 108 controls the storage unit 106, reads the stored detection values and sequence log information from the respective storage units, and detects the detected values and sequence log information (whether there is communication data or not). The determination result) is sent to the level determination means 107, and the presence or absence of communication is determined, and the power log display 9 can be displayed via the display information extraction means.

  When the power log display 9 changes from “None” to “Yes” with respect to the display of the presence / absence of communication of a predetermined communication channel, the solid line arrow etc. (9a, 9c) indicate “Yes” to “No” "Can be identified by dotted arrows (9b, 9d). However, since this display is intended to be identifiable, it may be displayed in a different color or the like.

  The state of presence / absence of communication of a predetermined communication channel displayed on the power log display 9 may be displayed for each sampling period of the signal physical quantity measuring means 104, but the number of items displayed on the power log display 9 is enormous. The purpose can be achieved by displaying only when the communication changes from “present” to “not present” and when the communication changes from “none” to “present”.

  Furthermore, the power log display 9 can be displayed in an identifiable manner by changing the line type and color when displaying the presence / absence of communication of a plurality of communication channels.

(Example 2)
Another embodiment relating to the display of FIG. 3 will be described below.

The detailed information display 14 displays detailed information related to the item selected in the item selection display 12 in the log display 15 described above. When the selected item is an item related to the sequence log display 10, the detailed information display 14 includes, for example, “base station number” (in the case of a plurality of base stations), “channel name”, “message type”, “message”. Detailed display such as “data”, “transmission source layer name”, “reception destination layer name” is displayed. The detailed information is extracted from the sequence log information stored in the storage means 106 and displayed.
When the latest information is always displayed on the detailed information display 14, the sequence log information from the sequence information acquisition unit 103 may be used as it is.

The message data displayed on the detailed information display 14 is a display of communication contents actually communicated in a predetermined format.
The source layer name and the destination layer name define the contents displayed by the communication protocol and the internal configuration of the communication test apparatus 100 and the names thereof.

When the selected item is an item related to the power log display 9, the detailed information display 14 includes a detailed display such as “channel name”, “power level value”, “channelization code”, “symbol rate”, and the like. Is displayed. The detailed information is extracted from the detection value stored in the storage unit 106 and information defined in the registration operation procedure or scenario and displayed.
When the latest information is always displayed on the detailed information display 14, the detection value from the signal physical quantity measuring means 104 may be used as it is.

  The base station number displayed on the detailed information display 14 is a registration operation procedure in order to make it possible to identify which base station the selected item is when the simulated base station simulates a plurality of base stations in a communication test. Defined by scenario.

  As described above, since the relationship between the channel name, channelization code, and symbol rate is defined in the registration operation procedure and scenario, it becomes possible to detect a physical quantity related to a specific communication channel based on the defined information. The power level of the communication channel can be extracted and displayed.

(Example 3)
The operation for realizing the display of FIG. 4 will be described together with the operation of the configuration of FIG.

  The level display screen 51 selects an item identified by the item selection display 12 from the log display 15 displayed on the log display screen 1 using the input unit 115 and selects (presses) the level display setting button 5. Is displayed.

  The content displayed in the log display 15 may be the content of the communication under test under test, or may be information stored in the storage means 106 after performing a communication test in the past. Of course, it goes without saying that the content displayed on the level display screen 51 is the content detected in the same test as the log display 15 displayed on the log display screen 1, and information on past communication tests is stored. It is called from the means 106 and displayed.

  In the level display 52 displayed on the level display screen 51, a predetermined time range is detected based on the time of the second time stamp 11b closest to the time stamp 11 of the item selected in the item selection display 12 described above. Value levels 53c and 54c (also referred to as “power levels”) are displayed.

  Further, the second time stamp 11b closest to the time stamp 11 of the selected item is displayed as a time axis time stamp 55 at the approximate center on the time axis of the level display 52 so that it can be identified together with the cursor 56. . However, this display is not limited to the approximate center on the time axis, and the oldest or latest display on the time axis can be displayed according to the application.

  However, the time axis time stamp 55 is not necessarily displayed at the place where the cursor 56 is displayed.

  In the downlink channel level display 53, the detection value having the second time stamp 11b between the detection value for the downlink communication channel designated in advance and a predetermined time range is extracted by the display information extraction means 109, and the level display generation is performed. The graphing process is performed by the means 110 and displayed as the detected value level 53c.

  In the upstream channel level display 54, the display information extraction means 109 extracts the detection value having the second time stamp 11b between the detection value for the upstream communication channel designated in advance and the predetermined time range, and generates the level display. The graphing process is performed by the means 110 and displayed as the detected value level 54c.

  Here, it is assumed that the communication channel to be displayed is designated in advance, but the communication channel corresponding to the item selected in the log display 15 is detected by the item selection means 113f and is automatically related to the item selected. The level of the communication channel may be displayed.

  Further, as shown in FIG. 5, by selecting (pressing) the downlink channel setting button 58, the downlink communication channels that can be displayed on the downlink channel level display 53 are displayed in a selectable manner, and the displayed buttons 58a1 to 58a1 are displayed. A button corresponding to the communication channel to be displayed can be selected from 58a4, and the communication channel to be displayed can be changed.

  Of course, in the uplink channel level display 54 as well, the uplink communication channel to be displayed can be changed by selecting (pressing) the uplink channel setting button.

  As shown in FIG. 6, the power level for a plurality of communication channels can be displayed on the level display 52. As described with reference to FIG. 5, after selecting (pressing) the downlink channel setting button 58 and the uplink channel setting button 59, a plurality of communication channels can be selected 58a1, 58a2, 59a1, and 59a2.

  As a method for selecting a plurality of communication channels, when the input unit 115 is a mouse or the like, for example, a selection can be made by right-clicking and determination can be made by left-clicking. When a keyboard is also used, for example, it can be selected by left-clicking with a mouse or the like while pressing a control key, and determined with a confirmation key.

  The level display 52 is a time range currently displayed by scrolling the screen with the scroll bar 57 when there is a detected value detected by the signal physical quantity measuring means 104 beyond the time range corresponding to the display range. Outside detection value levels 53c and 54c can be displayed.

  The scroll bar 57 has a display position block 57a that changes the size in relation to the time range or data amount displayed on the current level display 52 with respect to the time range or data amount of the entire detection value. Further, the display position block 57a moves the position on the scroll bar 57 together with the scroll of the level display 52, so that the currently displayed detection value levels 53c and 54c are the time range of the entire detection value or the total amount of the detection value (data Position and range can be identified.

  When the input means 115 is a mouse or the like, the level display 52 may be scrolled by dragging the display position block 57a or by using a wheel or the like on the mouse. When the input unit 115 is a keyboard, scrolling may be performed by moving the cursor 56 with a cursor key or the like.

  In the downlink channel level display 53 and the uplink channel level display 54, the threshold value set in the threshold setting unit 114 for determining the presence / absence of communication by the level determination unit 107 for the communication of each displayed communication channel is displayed. They are displayed as a downlink channel threshold value 53d and an uplink channel threshold value 54d, respectively.

  The displayed threshold values 53d and 54d are all the communication channels to be measured when the threshold values set in the threshold setting means 114 are all common settings, or when the uplink and downlink communication channels are set separately. In the case of individual setting, in the case of a plurality of settings for a predetermined communication channel, or in any combination state, it is possible to cope.

Example 4
FIG. 7 shows an operation for changing the setting of the scroll operation of the log display 15 on the log display screen 1 and the level display 52 on the level display screen 51. Hereinafter, description will be made with reference to FIG.

  When the option setting button 4 on the log display screen 1 is selected (pressed) from the input means 115, an option selection display 4a is displayed. When a scroll button (Scroll) 4a3 is selected from the option selection display 4a, a scroll option setting display 4a3a is displayed. On the scroll option setting display 4a3a, an ON button 4a3a1 "to interlock" the scroll operation of the log display 15 and the level display 52 and an OFF button 4a3a2 "not interlocked (independent operation)" are displayed and can be selected. Yes.

  When the ON button 4a3a1 (linked) is selected, the content is set in the scroll control means 113c, and the log information 15 and level display are controlled by controlling the display information extracting means 109, the level display generating means 110, and the display control means 111. The 52 scroll operations are operated in conjunction with each other.

  The interlocking of the scroll operation corresponds to the time range of the time stamp 11 of the item displayed in the log display 15 when the log display 15 is scrolled by operating the scroll bar 13 and the display position block 13a on the log display screen. The level display 52 is a power level in a predetermined time range with respect to the center (or latest or oldest) time of the time stamp 11 of the item displayed on the time range or the log display 15.

  Similarly, when the scroll bar 57 and the display position block 57a on the level display screen 51 are operated, the log display 15 is scrolled according to the scroll operation of the level display 52. The range displayed on the log display 15 is also predetermined with respect to the time range corresponding to the time range displayed on the level display 52 or the center (or latest or oldest) time of the time range displayed on the level display 52. The number of items can also be displayed on the log display 15.

  Needless to say, the same operation is performed for scrolling of the screen accompanying the movement of the item selection display 12 and the cursor 56.

  When the OFF button 4a3a2 (not linked) is selected, the content is set in the scroll control means 113c, and the log information 15 and the level display are controlled by controlling the display information extracting means 109, the level display generating means 110, and the display control means 111. The scroll operation 52 is performed independently.

  Needless to say, the screen selection associated with the item selection display 12 and the movement of the cursor 56 also operates independently. However, when an item on the log display 15 is selected by the item selection display 12, the operation at the time of item selection (such as displaying the level display screen 51) is followed.

(Example 5)
FIG. 8 shows an operation for changing the time axis of the level display 52. Hereinafter, description will be made with reference to FIG.

  When the option setting button 4 on the log display screen 1 is selected (pressed) from the input means 115, an option selection display 4a is displayed. When a power button (Power) 4a2 is selected from the option selection display 4a, a power option selection display 4a2a is displayed. When a scale button (Scale) 4a2a2 is selected from the power option selection display 4a2a, a scale setting display 4a2a2a is displayed.

  The scale setting display 4a2a2a has a scale setting field 4a2a2b that can be input from the input means 115. This figure shows an example of setting the time axis. The scale of the time axis of the graph displayed on the level display 52 is set to an enlargement ratio with respect to 10 ms as a reference unit (for example, corresponding to the sampling period). Yes.

  The values set and confirmed in the time axis scale setting field 4a2a2b are set in the display information extracting means 109 and the level display generating means 110 through the display scale changing means 113e, and are displayed by changing the time axis of the level display 52. .

  Although the change of the time axis is described in this figure, the scale of the power level axis can be changed by providing a setting column for setting the power level axis scale in the scale setting display 4a2a2a.

  When the time axis is changed, the point displayed on the level display 52 is the detected value having the second time stamp 11b closest to the time stamp 11 of the item selected by the item selection display 12 on the log display 15. The location may be displayed at the center (or top or bottom), or the cursor 56 on the level display 52 may be displayed at the center (or top or bottom).

(Example 6)
FIG. 9 shows a method of setting display or non-display of the power log display 9 displayed in the log display 15 and display or non-display of each layer display of communication displayed in the sequence log display 10.

  When the option setting button 4 on the log display screen 1 is selected (pressed) from the input means 115, an option selection display 4a is displayed. When a filter button (Filter) 4a1 is selected from the option selection display 4a, a filter setting display 4a1a is displayed. The filter setting display 4a1a displays display / non-display setting buttons 4a1a1 to 4a1a8 corresponding to each layer of communication including the power log display 9 that can be set to display or non-display.

  The display / non-display setting buttons are MS-PHY display / non-display setting buttons (MS → PHY) 4a1a1, PHY-MAC display / non-display setting buttons (PHY → MAC) 4a1a2, and MAC-RLC for the up link (Up Link). Display / non-display setting button (MAC → RLC) 4a1a3, RLC-RRC display / non-display setting button (RLC → RRC) 4a1a4, PHY-MS display / non-display setting button (DOWN →) for the down direction (Down Link) MS) 4a1a5, MAC-PHY display / non-display setting button (MAC → PHY) 4a1a6, RLC-MAC display / non-display setting button (RLC → MAC) 4a1a7, RRC-RLC display / non-display setting button (RRC → RLC) 4a1a8.

  When the display / non-display setting buttons 4a1a1 to 4a1a8 are in the ON state (display setting, thick frame display in the figure), the communication layer corresponding to the ON state button is set in the power log display 9 and the sequence log display 10. indicate. When the display / non-display setting buttons 4a1a1 to 4a1a8 are in the OFF state (non-display setting, thin frame display in the figure), the communication corresponding to the OFF state button in the power log display 9 and the sequence log display 10 is performed. Hide the layer.

  The display / non-display setting buttons 4a1a1 to 4a1a8 are switched between the ON state and the OFF state each time they are selected (pressed), and the setting can be easily switched. The display or non-display information input by the input unit 115 is set in the display item setting unit 113d and notified to the display control unit 111. The display control unit 111 controls the display or non-display of the corresponding communication layer among the display information of all layers extracted by the display information extraction unit 109.

  Up to this point, it has been described that the display control unit 111 controls display or non-display based on the setting information of the display item setting unit 113d. However, even if only the display information of the layer displayed by the display information extraction unit 109 is extracted. good.

(Example 7)
FIG. 10 shows a method in which the level determination means 107 sets a threshold value for determining the presence / absence of communication on a predetermined communication channel from the input means 115 to the threshold setting means 114.

  FIG. 10 also shows a downlink channel threshold value 53d and an uplink channel threshold value 54d (hereinafter collectively referred to as “threshold value display”) displayed on the level display 52 when the threshold value set in the threshold setting means is changed. It also shows how it changes.

  When the option setting button 4 on the log display screen 1 is selected (pressed) from the input means 115, an option selection display 4a is displayed. When the power button 4a2 is selected from the option selection display 4a, a power option selection display 4a2a is displayed. When a threshold setting button (Threshold) 4a2a3 is selected from the power option selection display 4a2a, a threshold setting display 4a2a3a is displayed.

  The threshold setting display 4a2a3a has a threshold setting column 4a2a3b, and a threshold value can be input from the input means 115. This figure shows a case where the threshold value set in the threshold setting means 114 is one type.

  The values set and fixed in the threshold setting fields 4a2a3b are set in the threshold setting means 114, set in the level display generation means 110 through the display information extraction means 109, and changed to the level display 52. The threshold value displays 53d and 54d are changed. Is displayed.

  The level display 52 in FIG. 10 shows how the threshold value displays 53d and 54d change when the threshold value is changed. Threshold value displays 53f and 54f (virtual lines for explanation) corresponding to the threshold values set in the past are changed to threshold value displays 53d and 54d (this is actually displayed) by the above-described threshold value setting change operation. It has changed.

  In this description, the case where the threshold values are common is shown. However, when a plurality of types of threshold values can be set in the threshold setting means 114, threshold setting fields 4a2a3b are also prepared for each type, and the level display 52 The display position (power level) of the threshold value displayed on the screen is also changed individually for each type of threshold value set.

(Example 8)
FIG. 11 shows another example in which the level determination means 107 performs a determination having another meaning (for example, product quality determination criteria) in addition to the threshold value for determining the presence / absence of communication on a predetermined communication channel. The operation in the case where a threshold value (hereinafter also referred to as “product threshold value”) is set in the threshold setting means 114 is shown.

  As described so far, the threshold value for the level determination means 107 to determine the presence or absence of communication of a predetermined communication channel is indicated on the level display 52 by the threshold value displays 53d and 54d.

  The case where the product threshold value for determining the quality of the product level of the mobile communication terminal 101 to be measured is set in the threshold setting means 114 will be described below.

  Usually, the threshold value for determining the presence / absence of communication of a predetermined communication channel by the level determination means 107 refers to a value posted in a standard that defines a communication method (3GPP standard or the like in W-CDMA in this description). Determined. However, the mobile communication terminal 101, which is a product, usually determines the quality of a product using a determination criterion having a margin with respect to a value defined by the standard in order to guarantee the standard value.

  In actual measurement, when the presence / absence of communication on a given communication channel was determined based on a threshold value with a margin for determining the quality of the product, communication itself was not performed normally even if the operation was abnormal. Whether or not the signal level is defective as a product cannot be determined.

  Therefore, the present invention solves this problem by making it possible to individually set a threshold value for determining whether communication has been performed while satisfying the standard value, and a product threshold value indicating whether the product is good or bad. .

  Similar to the threshold value, the product threshold value is set in the threshold setting means 114, and the level determination means 107 determines pass / fail.

  Further, the set product threshold value is displayed on the level display 52 so as to be identifiable as product threshold value displays 53e and 54e in the same manner as the threshold value displays 53d and 54d.

  For the power log display 9 as well, if the signal power level does not exceed the product threshold value or falls below the product threshold value while the communication of the predetermined communication channel changes from “Yes” to “No”, the product A defect occurrence display 9e or the like is displayed to enable identification.

Example 9
In FIG. 12, two kinds of threshold values for determining whether or not there is communication on a predetermined communication channel by the level determination means 107 with hysteresis characteristics are displayed on the level display 52 when the threshold setting means 114 is set. Examples of first threshold value displays 53g and 54g and second threshold value displays 53f and 54f are shown.

  The threshold setting means 114 uses the above-described method for setting a plurality of threshold values, and the level determination means 107 uses the first threshold value for determining that there is communication on a predetermined communication channel, and the level determination means 107. A second threshold value for determining that there is no communication in a predetermined communication channel can be set.

  In the following, the first and second threshold values will be described as one set of values common to uplink communication, downlink communication, and all communication channels, but the present invention is not limited to one set of values. The first and second threshold values may be set corresponding to uplink and downlink, respectively, or the first and second threshold values may be set for each communication channel.

  When the threshold value for determining the presence / absence of communication of a predetermined communication channel is a single value, the power level of the communication signal of the predetermined communication channel is in the vicinity of the set threshold value (power level) Therefore, the state of presence / absence of communication determined by the level determination unit 107 becomes unstable (a state in which the presence / absence of communication is frequently switched).

  In order to solve this problem, the level determination means 107 uses the first and second threshold values to determine the power level of the communication signal of the predetermined communication channel from the discrete detection value detected by the signal physical quantity measurement means 104. When the first threshold value is exceeded, it is determined that communication is present, and after communication is present, the power level of the communication signal of the predetermined communication channel is determined from the discrete detection value detected by the signal physical quantity measuring means 104. When the value falls below the threshold value, it is determined that there is no communication. With this operation, the determined presence / absence of communication does not become unstable.

  In order to realize the above operation, the first threshold value needs to be set to a value (large power level) larger than the second threshold value. The magnitude relationship between the first and second threshold values can be reliably set by limiting the input value for the input field.

  The set first and second threshold values are displayed on the level display 52 so as to be identifiable as first threshold values 53g and 54g and second threshold values 53f and 54f.

(Example 10)
FIG. 13 shows an operation of searching for items related to a desired communication channel from the power log display 9. This will be described below with reference to FIG.

  When the option setting button 4 on the log display screen 1 is selected (pressed) from the input means 115, an option selection display 4a is displayed. When a search button (Find) 4a4 is selected from the option selection display 4a, a search condition input display 4a4a is displayed.

  The search condition input display 4a4a displays a communication direction input field 4a4a1, a communication channel name input field 4a4a3, a communication presence / absence condition input field 4a4a4, and the like, which can be input from the input means 115. In this figure, in addition to the above input fields, input fields (communication layer input field 4a4a2, channelization code input field 4a4a5, symbol rate input field 4a4a6, power level input field) in which the power log display 9 and sequence log display 10 can be searched. 4a4a7 etc.).

  In addition, condition setting fields 4a4a8 are provided for setting whether the relationship between the input fields for inputting the search conditions is an AND condition or an OR condition. In this figure, the condition setting fields 4a4a8 are provided between the input fields, but the input field in which the search condition is not input in the input field and the condition setting field immediately above the input field are ignored. The search can be performed only on the contents in which the search condition is input.

  Return the description to the power log display 9. In the search condition input display 4a4a, the communication direction input field 4a4a1, the communication layer input field 4a4a2 (here, the MS-PHY layer is input and the power log display 9 is specified), the communication channel name input field 4a4a3, the communication presence / absence condition input field 4a4a4, etc. Input and check all the condition setting fields 4a4a8 immediately above each input field to AND.

  The contents input in each input field and the relationship between the input fields are set in the power log information search means 113g, and the content corresponding to each input condition is searched from the power log display 9, and the item corresponding to the search condition Is found to be identifiable through the display control means 111. If no item corresponding to the search condition is found, the fact is displayed through the display control means 111.

  The symbol rate input field 4a4a6, the power level input field 4a4a7, etc. described above not only search for input values, but also input more than (or larger) or less than (or smaller) input values. It is possible and facilitates the search.

  Up to this point, the power log display 9 and the sequence log display 10 have been described as being searched. However, the search value, power log information, and sequence log information that are the basis of each display are searched as necessary. It is easy and feasible to implement. In this case, even more detailed information can be searched.

  The embodiments described above are not provided individually but can be provided in various combinations, and tests and analysis of test results can be easily performed by these combinations.

The figure which shows the structure of the communication test apparatus of this invention, The figure which shows the detailed example of a sequence information acquisition means and a signal physical quantity measurement means, A diagram showing an example of a screen including a log display, The figure which shows the example of the screen which includes level indication, The figure which shows the setting example which selects the communication channel which is displayed in the level display, The figure which shows the example of a setting which selects a plurality of communication channels displayed on a level display, A figure showing an example of setting “linked” and “not linked” for scrolling, Figure showing an example of setting the time axis for level display The figure which shows the setting example which selects the display item of log display, The figure which shows the example of the change setting of the threshold value, The figure which shows the example of a display when there are two types of threshold values for level judgment, The figure which shows the example of a display when the threshold value for level judgment has a hysteresis characteristic, Figure showing an example of operation related to search of power log display A diagram showing a conventional example of sequence display, A diagram showing a conventional example of level display, (A) The figure which shows the prior art example for performing a communication test with a mobile communication terminal, (b) The figure which shows the prior art example in the case of measuring a physical quantity during a mobile communication terminal and a communication test.

Explanation of symbols

1 ... Log display screen,
2 ... Start button,
3 ... Stop button,
4 ... Option setting button,
5 ... Level display setting button,
6 ... Save button,
7 ... Load button,
8 ... Item number display,
9 ... Power log display,
10 ... Sequence log display,
11 ... Time stamp, 11a ... First time stamp, 11b ... Second time stamp,
12 ... Item selection display,
13 ... Scroll bar, 13a ... Display position block 14 ... Detailed information display,
15 ... Log display,
51 ... Level display screen,
52 ... Level display,
53 ... Downstream channel level display, 53a ..., 53b ... Channel name, 53c ... Detection value level, 53d ... Downstream channel threshold value 54 ... Upstream channel level display, 54a ..., 54b ... Channel name, 54c ... Detection value level, 54d ... Up channel threshold value 55 ... Time axis time stamp,
56 ... Cursor,
57 ... Scroll bar, 57a ... Display position block 58 ... Down channel setting button,
59 ... Up channel setting button,
100: Communication test device,
101 ... Mobile communication terminal 102 ... Pseudo base station means,
103 ... Sequence information acquisition means, 103a ... Transmission data presence / absence determination means, 103b ... Reception data presence / absence determination means,
104 ... Signal physical quantity measurement means, 104a ... Transmission signal measurement means, 104b ... Reception signal measurement means, 104c ... RF signal measurement means,
105: Time information generating means,
106: Storage means, 106a ... Sequence log storage unit, 106b ... Detection value storage unit,
107 Level judging means,
108 ... display means,
109 ... display information extraction means,
110 ... level display generation means,
111 ... display control means,
112 ... display section,
113 ... Setting selection means, 113a ... Channel selection means, 113b ... Display position control means, 113c ... Scroll control means, 113d ... Display item setting means, 113e ... Display scale change means, 113f ... Item selection means, 113g ... Power log information Search means,
114... Threshold setting means,
115: Input means.

Claims (24)

A sequence log creation stage for creating sequence log information by detecting the contents of information exchange in communication of a digital communication system that performs communication using a predetermined communication protocol, and a sequence log display (10 And a communication test result display method comprising the steps of:
A signal physical quantity measurement step of detecting a physical quantity of a signal corresponding to at least one communication channel among the communication channels defined by the communication protocol, and outputting the physical quantity as a detection value;
A level determination step of determining the presence or absence of communication in the at least one communication channel from the power level included in the detection value, and creating power log information including the determined result;
Displaying a power log display (9) indicating that the presence or absence of the communication can be identified from the power log information;
A communication test result display method comprising: a log display step of performing log display (15) for displaying the sequence log display and the power log display side by side in time series. The sequence log creating step includes the step of determining the presence / absence of communication data in the at least one communication channel, and the step of determining the presence / absence of communication data using the result as part of the sequence log information,
The level determination step determines the presence / absence of communication in the at least one communication channel from the determination result of the presence / absence of communication data included in the sequence log information and the power level included in the detection value detected in the signal physical quantity measurement step. The communication test result display method according to claim 1, wherein power log information including the determined result is created. The sequence log creating step includes the step of associating the first time stamp (11a) indicating the time when the content of the information transfer in the communication is acquired with the content as the sequence log information,
The signal physical quantity measuring step includes a step of using a second time stamp (11b) indicating a time when a physical quantity of a signal corresponding to the at least one communication channel is detected as the detection value in association with the physical quantity. And
In the log display step, the first time stamp included in the sequence log information and the first or second time stamp corresponding to the power log information created in the level determination step are arranged in time series. Displaying the sequence log display and the power log display as the log display,
The sequence log arranged in the time series by selecting any item from the items arranged in the time series of the sequence log display displayed in the log display stage or the items arranged in the time series of the power log display An item selection stage that allows selection of any item of display and power log display;
A predetermined time range including the detection value having the second time stamp indicating the time closest to the time indicated by the first time stamp or the second time stamp of the item selected in the item selection step. 3. A communication test result display method according to claim 1, further comprising: a level display step of displaying (52) a power level for the at least one communication channel from the detected value in a graph. A sequence log display (sequence log display) shows information acquired by the sequence information acquisition means (103) for detecting information transfer in communication of a digital communication system that performs communication using a predetermined communication protocol as sequence log information. 10) In the communication test apparatus displaying
Signal physical quantity measuring means (104) for detecting a physical quantity of a signal corresponding to at least one of the communication channels defined by the communication protocol, and outputting the detected physical quantity;
Level determination means (107) for determining presence / absence of communication in the at least one communication channel from the power level included in the detection value, and generating and outputting power log information from the determination result;
Display means for displaying both the sequence log display and the power log display (9) indicating the presence / absence of communication in the at least one communication channel from the power log information in chronological order and displaying them as a log display (15) (108). A communication test apparatus comprising: The sequence information acquisition means includes communication data presence / absence determination means (103a, 103b) that determines the presence / absence of communication data in the at least one communication channel and uses the result as part of the sequence log information.
The level determination means is at least one based on a determination result of presence / absence of communication data included in the sequence information created by the sequence information acquisition means and a power level included in a detection value detected by the signal physical quantity measurement means. 5. The communication test apparatus according to claim 4, wherein the presence or absence of communication in one communication channel is determined, and power log information is created and output from the determination result. The sequence information acquisition unit acquires the content of the information in the communication when the sequence information acquisition unit transfers the information in the communication, and indicates the content of the acquired information and the time at that time The sequence log information is associated with the first time stamp (11a) output from the information generating means (105),
The signal physical quantity measuring means associates the physical quantity detected by the signal physical quantity measuring means with the second time stamp (11b) output from the time information generating means indicating the time when the signal physical quantity is detected as the detected value. ,
The first time stamp included in the sequence log information and the first and second time stamps corresponding to the power log information generated and output by the level determination unit are arranged in time series. 6. The communication test apparatus according to claim 4, further comprising the display unit that displays the power log display as the log display together with the sequence log display. Storage means (106) for storing the sequence log information and the detection value;
The sequence log display showing the sequence log information stored in the storage means in an identifiable manner;
The presence / absence of communication in the at least one communication channel is identified from the power log information created by determining the presence / absence of communication in the at least one communication channel by the level determination unit from the detection value stored in the storage unit. 7. The communication test apparatus according to claim 4, further comprising the display unit configured to display the log display together with the power log display shown as possible in time series.   The level determination unit compares the power level included in the detection value detected by the signal physical quantity measurement unit with a threshold value set in advance according to a target communication channel, and the at least one communication channel. The communication test apparatus according to claim 4, wherein presence or absence of communication is determined. The level determination means determines the presence or absence of communication in the at least one communication channel by comparing a power level included in the detection value with a threshold value set in advance according to a target communication channel,
The threshold value includes a first threshold value for determining that there is communication in the at least one communication channel and a second threshold value for determining that there is no communication in the at least one communication channel; The communication test apparatus according to claim 4, wherein the level determination unit performs determination having a hysteresis characteristic between the first threshold value and the second threshold value.   The display means is determined by the level determination means, and from the generated power log information, the state of presence / absence of communication in the at least one communication channel has changed from a state of no communication to a state of communication. 10. The communication test apparatus according to claim 4, wherein a change from a state with communication to a state without communication is identifiable as the power log display.   11. The communication test apparatus according to claim 4, wherein the display means includes display item setting means (113d) capable of setting the power log display to non-display.   The said display means enables scrolling of the log display when the log display displayed on the log display screen (1) exceeds the display range of the log display screen. Item 12. A communication test apparatus according to Item 11. The display means selects the arbitrary item from the items arranged in the time series of the sequence log display of the log display displayed on the display means or the items arranged in the time series of the power log display. Item selection means (113f) that enables selection of any item of the sequence display and the power log display arranged in a series;
13. The communication test apparatus according to claim 4, wherein detailed information corresponding to the item selected by the item selection means is displayed as a detailed information display (14).   The said display means has a power log information search means (113g) which searches the item regarding a desired communication channel from the said power log display, and enables identification of the item applicable to this search. The communication test apparatus according to claim 13. The display means selects any item from the items arranged in the time series of the sequence log display of the log display displayed in the display means or the items arranged in the time series of the power log display. The item selection means that enables selection of any item of the sequence log display and the power log display arranged in the time series,
A predetermined value including the detection value having the second time stamp indicating the time closest to the time indicated by the first time stamp or the second time stamp of the item selected by the item selection means; 15. The communication test apparatus according to claim 6, wherein a level display (52) is displayed in which a power level for at least one communication channel is displayed in a graph from the detected value within a time range. The storage means for storing the sequence log information and the detection value;
The sequence log information stored in the storage means;
The communication test apparatus according to claim 15, further comprising: the display unit that performs the level display from the detection value stored in the storage unit.   The display means includes display information extraction means (109) for recognizing a communication channel corresponding to the content indicated by the item selected by the item selection means and displaying the power level related to the communication channel in a graph on the level display. The communication test apparatus according to claim 15 or 16, characterized in that:   The display means extracts channel selection means (113a) for selecting a communication channel to be displayed on the level display, and information related to the display corresponding to the communication channel selected by the channel selection means, and displays the information on the level display. The communication test apparatus according to claim 15 or 16, further comprising display information extraction means (109) for performing the display information extraction. The channel selection means is capable of selecting a plurality of communication channels in order to display power levels related to a plurality of communication channels on the level display,
The display information extraction means can extract information related to display corresponding to a plurality of communication channels selected by the channel selection means,
19. The communication test apparatus according to claim 18, wherein the display unit performs the level display based on information related to the display extracted by the display information extraction unit.   20. The display means includes display scale changing means (113e) capable of changing at least one of a time axis scale and a power level axis displayed in the level display. Communication test equipment.   The signal physical quantity measuring means samples and detects a signal corresponding to the at least one communication channel at a predetermined period, and the display means includes power included in the detection value detected by the signal physical quantity measuring means. 21. The communication test apparatus according to claim 15, wherein a level is linearly interpolated and displayed on the level display.   The communication test apparatus according to any one of claims 15 to 21, wherein the display means displays the preset threshold value so as to be identifiable at a corresponding power level on the level display.   The display means enables scrolling of the level display when the level display displayed on the level display screen (51) exceeds a display range of the level display screen. Item 22. A communication test apparatus according to Item 22. The display means includes scrolling of the log display displayed on the display unit,
24. A scroll control means (113c) capable of selectively setting whether the level display scroll displayed on the display unit is linked or not linked. Communication test equipment.

Images