JP2005286841A - Communication test device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a communication test device capable of correctly indicating the type of a message to be exchanged between a communication test device and a device to be tested which may deteriorate a signal. <P>SOLUTION: First and second emulators 11 and 12 include at least one of signal transmission/reception units 5 and 6 for each transmitting a signal to the device 8 to be tested and receiving a signal from the device 8, respectively. The units 5 and 6 includes time information generators 5a, 6a for generating transmission time information indicating a time of transmitting a signal to the device 8, and a reception time information indicating a time of receiving a signal from the device 8; and accumulators 5b, 6b for adding the transmission time information to the information indicated by the signal transmitted to the device 8, adding the reception time information to the information indicated by the signal received from the device 8, and accumulating the added information as a tracing result of communication test, respectively. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a communication test apparatus, and more particularly to a communication test apparatus that performs a communication test on a radio base station in a W-CDMA mobile communication system.

A conventional communication test apparatus includes a test execution management unit that controls the entire operation, a communication control unit that transmits and receives test data to and from the device under test, and a logging unit that records test results in a log information file. The communication test of the device under test has been executed (for example, see Patent Document 1).
Japanese Patent Laid-Open No. 05-37604

  However, when the conventional communication test apparatus analyzes whether or not the wireless base station in the mobile communication system executes relay between wireless communication and wired communication according to the communication protocol, the communication test on the wireless communication side and the wired communication side Since the communication test cannot be executed in time synchronization, the trace result on the wireless communication side and the trace result on the wired communication side cannot be accurately compared and analyzed.

  Also, when analyzing the transition of the code error rate in the relay between wireless communication and wired communication, the conventional communication test apparatus cannot record the trace result and the measurement result of the code error rate in association with each other. It is possible to accurately analyze how the code error rate changes in the process of relaying to and what kind of message is exchanged between the communication test equipment and the equipment under test. could not.

  The present invention has been made to solve the conventional problems, and executes the communication test on the wireless communication side and the communication test on the wired communication side in time synchronization, and the trace result on the wireless communication side and the trace on the wired communication side are executed. The results can be compared and analyzed accurately, and how the code error rate changes in the process of relaying between wireless communication and wired communication, and the communication test equipment and device under test It is an object of the present invention to provide a communication test apparatus that can accurately analyze whether a signal deteriorates when such a message is exchanged.

  A communication test apparatus according to the present invention includes a first emulator that performs wireless communication and a second emulator that performs wired communication, and performs a communication test on a device under test that relays the wireless communication and the wired communication. The communication test apparatus to be executed, wherein each of the first and second emulators includes at least one signal transmission / reception unit that transmits a signal to the device under test and receives a signal from the device under test, The signal transmitter / receiver generates a transmission time information indicating a time when the signal is transmitted to the device under test and a reception time information indicating a time when the signal is received from the device under test. And the transmission time information and the reception time information respectively added to the information represented by the signal transmitted to the device under test and the information represented by the signal received from the device under test. It has a configuration having a storage section for storing as trace result information of the communication test.

  With this configuration, the storage unit of the signal transmission / reception unit of the first emulator and the storage unit of the signal transmission / reception unit of the second emulator have the information represented by the signal transmitted to the device under test and the information represented by the signal received from the device under test. Since transmission time information and reception time information are added and the added information is accumulated, how the measurement results such as code errors change, and what messages are exchanged between the communication test equipment and the equipment under test It is possible to accurately indicate whether or not the signal is deteriorated.

  In the communication test apparatus of the present invention, the time information generation unit of the signal transmission / reception unit of the first and second emulators receives radio waves from the artificial satellite, generates time information synchronized with each other from the received radio waves, and generates the time information A transmission time information indicating a time when the signal is transmitted to the device under test based on time information; and reception time information indicating a time when the signal is received from the device under test. ing.

  With this configuration, the time information generating unit of the signal transmitting / receiving unit of the first emulator and the time information generating unit of the signal transmitting / receiving unit of the second emulator generate time information by receiving radio waves from the artificial satellite. The signal transmission / reception unit of the second emulator and the signal transmission / reception unit of the second emulator receive the transmission time information indicating the time when the signal is transmitted to the device under test from the time information common to the signal transmission / reception unit of the second emulator and the time when the signal is received from the device under test. Time information can be generated. Therefore, it is determined whether the device under test has communicated according to the communication protocol by combining the information accumulated in the accumulation unit of the signal transmission unit of the first emulator and the information accumulated in the accumulation unit of the signal transmission unit of the second emulator. Can be determined.

  In the communication test apparatus according to the present invention, the signal transmission / reception units of the first and second emulators detect code errors in the signal received from the device under test, and totalize the detected code errors every predetermined time. A measuring unit that measures a code error rate of a signal received from the device under test; and a storage unit of the signal transmitting / receiving unit of the first and second emulators stores information representing the code error rate measured by the measuring unit. The time information is added, and the added information is stored as measurement result information of the communication test.

  With this configuration, the storage unit of the signal transmission / reception unit of the first emulator and the storage unit of the signal transmission / reception unit of the second emulator add time information to information representing the code error rate, and the added information is used as measurement result information of the communication test. Therefore, the transition of the code error rate and the trace result can be compared.

  The communication test apparatus of the present invention generates a control information for controlling the first and second emulators based on the control procedure information, and a procedure information storage unit that stores procedure information representing the scenario of the communication test And a control unit for controlling the first and second emulators.

  With this configuration, the first and second emulators can be easily controlled according to the communication test scenario.

  In the communication test apparatus according to the present invention, the control unit transmits and receives the control signal to the first and second emulators and receives the trace result information and the measurement result information from the first and second emulators. And a display unit that displays the test result of the communication test.

  With this configuration, it is possible to compare the transition of the trace result received from the first and second emulators and the measurement result on the screen.

  In the communication test apparatus according to the present invention, the display unit of the control unit includes a measurement result display unit that displays the measurement result on a screen, a trace result display unit that displays the trace result on the screen, and the measurement result is displayed. A first marker superimposing unit that superimposes the first marker on the displayed screen, and a second marker superimposing unit that superimposes the second marker on the screen on which the trace result is displayed.

  With this configuration, since the first marker and the second marker can be superimposed on the screen on which the trace result and the measurement result are displayed, the trace result and the measurement result are specified using the first marker and the second marker. Can be pointed to.

  In the communication test apparatus according to the present invention, the display unit of the control unit compares the time indicated by the time information of the measurement result indicated by the first marker with the time indicated by the time information of the trace result indicated by the second marker, A configuration in which the position on the screen of either the first marker or the second marker is updated so that the first marker and the second marker indicate the measurement result and the trace result at the same time, respectively. have.

  With this configuration, the first marker and the second marker can point to the same time location on the screen on which the trace result and the measurement result are displayed.

  In the communication test apparatus according to the present invention, the control unit extracts the time information from the measurement result information received by the transmission / reception unit from the first and second emulators, and the device under test is based on the extracted time information. A delay amount calculation unit for calculating the delay amount.

  With this configuration, the delay amount of the device under test can be easily calculated by extracting time information from the measurement result information received from the first and second emulators.

  The communication test apparatus of the present invention has a configuration in which the device under test is a radio base station in a W-CDMA mobile communication system.

  With this configuration, it is possible to perform a communication test on a radio base station in a W-CDMA mobile communication system.

  According to the present invention, the storage unit of the signal transmission / reception unit of the first emulator and the storage unit of the signal transmission / reception unit of the second emulator include the information represented by the signal transmitted to the device under test and the information represented by the signal received from the device under test. The transmission time information and the reception time information are added to each other, and the added information is stored. Thus, how the measurement results such as code errors change, and what is the communication test apparatus and the device under test? It is possible to provide a communication test apparatus having an effect of being able to accurately indicate whether a signal is deteriorated when messages are exchanged.

  Hereinafter, a communication test apparatus according to an embodiment of the present invention will be described with reference to FIGS.

  As shown in FIG. 1, the communication test apparatus 10 includes a first emulator 11 that executes wireless communication and a second emulator 12 that executes wired communication, and the apparatus under test 8 relays wireless communication and wired communication. A communication test is performed on

  Here, the device under test 8 is a radio base station in a W-CDMA mobile communication system.

  The first emulator 11 includes a plurality of signal transmission / reception units 5, and each of the plurality of signal transmission / reception units 5 transmits a signal to the device under test 8 and receives a signal from the device under test 8. . Further, as shown in FIG. 2, each of the plurality of signal transmission / reception units 5 shows transmission time information indicating the time when the signal is transmitted to the device under test 8 and the time when the signal is received from the device under test 8. Transmission time information and reception time information in the time information generation unit 5a for generating the reception time information, information represented by the signal transmitted to the device under test 8, and information represented by the signal received from the device under test 8, respectively. And a storage unit 5b for storing the added information as trace result information of the communication test.

  On the other hand, the second emulator 12 includes a signal transmitting / receiving unit 6 that transmits a signal to the device under test 8 and receives a signal from the device under test 8. Further, as shown in FIG. 3, the signal transmission / reception unit 6 includes transmission time information indicating the time when the signal is transmitted to the device under test 8 and reception time indicating the time when the signal is received from the device under test 8. Transmission time information and reception time information are added to the information represented by the signal transmitted to the device under test 8 and the information represented by the signal received from the device under test 8, respectively. And a storage unit 6b for storing the added information as trace result information of the communication test.

  The time information generator 5a of the signal transmitter / receiver 5 of the first emulator 11 receives radio waves from the artificial satellite, generates time information from the received radio waves, and sends a signal to the device under test 8 based on the generated time information. Transmission time information indicating the transmission time and reception time information indicating a time when a signal is received from the device under test 8 are generated. Similarly, the time information generator 6a of the signal transmitter / receiver 6 of the second emulator 12 receives radio waves from the artificial satellite, generates time information from the received radio waves, and based on the generated time information, the device under test 8 The transmission time information indicating the time when the signal is transmitted to and the reception time information indicating the time when the signal is received from the device under test 8 are generated.

  Instead of using the radio wave from the artificial satellite, the time information generation unit 5a and the time information generation unit 6a may be connected by a wire and the time may be synchronized with each other.

  The signal transmitter / receiver 5 of the first emulator 11 detects the code errors of the signal received from the device under test 8 and counts the detected code errors at predetermined time intervals to add the code of the signal received from the device under test 8. A measurement unit 5c for measuring the error rate is provided. Further, the storage unit 5b of the signal transmission / reception unit 5 of the first emulator 11 adds time information to information indicating the code error rate measured by the measurement unit, and stores the added information as measurement result information of the communication test. It has become.

  On the other hand, the signal transmission / reception unit 6 of the second emulator 12 detects the code errors of the signal received from the device under test 8 and counts the detected code errors every predetermined time, thereby receiving the signal received from the device under test 8. Has a measurement unit 6c for measuring the code error rate. Further, the storage unit 6b of the signal transmitting / receiving unit 6 of the second emulator 12 adds time information to information representing the code error rate measured by the measurement unit, and stores the added information as measurement result information of the communication test. It has become.

  Further, the communication test apparatus 10 receives a control information for controlling the first and second emulators 11 and 12 based on the control procedure information, and a procedure information storage unit 13a for storing procedure information indicating a scenario of the communication test. And a control unit 13 for controlling the first and second emulators 11 and 12.

  The control unit 13 further transmits a control signal to the first emulator 11 and the second emulator 12, and receives a trace result information and measurement result information from the first emulator 11 and the second emulator 12, and a communication unit 13c. A display unit 13d for displaying a test result of the test.

  As shown in FIG. 4, the display unit 13d of the control unit 13 displays the measurement result on the screen, the measurement result display unit 14 that displays the measurement result, the trace result display unit 16 that displays the trace result on the screen, and the measurement result. The first marker superimposing unit 15 that superimposes the first marker on the screen, the second marker superimposing unit 17 that superimposes the second marker on the screen on which the trace result is displayed, and the transmitting / receiving unit 13c are connected to the first emulator 11 and the first 2 has a measurement result memory 18 for storing the measurement result information received from the emulator 12, and a trace result memory 19 for storing the trace result information received by the transmission / reception unit 13 c from the first emulator 11 and the second emulator 12. .

  As shown in FIG. 5, the trace result displayed on the screen includes a display 16 a indicating where the message is transmitted as detailed signaling information, a message display 16 b, a parameter display 16 c, And time information display 16d. In the display 16a indicating where the message is sent from, the vertical lines 16e, 16f, and 16g indicate the first emulator 11, the device under test 8, and the second emulator 12, respectively. Yes. Moreover, the arrow of a horizontal line has shown from where to where the message was transmitted.

  As shown in FIG. 6, the second marker may have a vertical line shape so that a specific time with a code error rate can be indicated.

  The display unit 13d of the control unit 13 compares the time indicated by the time information of the measurement result indicated by the first marker with the time indicated by the time information of the trace result indicated by the second marker, and the first marker and the second marker are compared. The position on the screen of one of the first marker and the second marker is updated so as to indicate the measurement result and the trace result at the same time, respectively.

  The control unit 13 extracts time information from the measurement result information received by the transmission / reception unit from the first emulator 11 and the second emulator 12, and calculates a delay amount of the device under test 8 based on the extracted time information. It has a portion 13e.

  Next, the operation of the communication test apparatus according to the embodiment of the present invention will be described.

  First, a control signal is generated by the control signal generation unit 13b based on the scenario stored in the procedure information storage unit 13a of the control unit 13. Next, the generated control signal is transmitted to the signal transmitter / receiver 5 of the first emulator 11 and the signal transmitter / receiver 6 of the second emulator 12 by the transmitter / receiver 13c. Next, a communication test of the device under test is executed by the first emulator 11 and the second emulator 12 in response to the control signal, and the trace result information and the measurement result information are stored in the storage units 5b and 6b of the first and second emulators. Accumulated. Next, the trace result information and measurement result information stored in the storage units 5b and 6b of the first and second emulators are sequentially received by the transmission / reception unit 13c of the control unit 13, and the received trace result information and measurement result information are The measurement result memory 18 and the trace result memory 19 of the display unit 13d of the control unit 13 are accumulated.

  Here, the trace result information and the measurement result information accumulated in the measurement result memory 18 and the trace result memory 19 may be displayed on the screen from the time when the communication test is started.

  As described above, in the communication test apparatus of the present invention, the storage unit of the signal transmission / reception unit of the first emulator and the storage unit of the signal transmission / reception unit of the second emulator have the information represented by the signal transmitted to the device under test and the device under test. The transmission time information and the reception time information are added to the information represented by the signal received from the device, and the added information is stored, so how the measurement results such as code errors change, the communication test device and the device under test It is possible to accurately indicate what kind of message is exchanged with the device when the signal deteriorates.

  In the communication test apparatus of the present invention, the time information generating unit of the signal transmitting / receiving unit of the first emulator and the time information generating unit of the signal transmitting / receiving unit of the second emulator generate time information by receiving radio waves from the artificial satellite. Therefore, the signal received from the device under test and the transmission time information indicating the time when the signal was transmitted to the device under test from the time information common to the signal transmitter / receiver of the first emulator and the signal transmitter / receiver of the second emulator. The reception time information indicating the time can be generated.

  In the communication test apparatus according to the present invention, the storage unit of the signal transmission / reception unit of the first emulator and the storage unit of the signal transmission / reception unit of the second emulator add time information to the information indicating the code error rate, and Since it accumulates as measurement result information of a communication test, the transition of the code error rate and the trace result can be compared.

  Further, the communication test apparatus of the present invention can superimpose the first marker and the second marker on the screen on which the trace result and the measurement result are displayed, so that the first marker and the second marker are at the same time. Can be pointed to.

  Further, the communication test apparatus of the present invention can easily calculate the delay amount of the device under test by extracting time information from the measurement result information received from the first and second emulators.

  As described above, the communication test apparatus according to the present invention can accurately analyze whether or not the device under test performs relay between wireless communication and wired communication according to the communication protocol, and how the code error rate is. It has the effect of being able to accurately analyze what kind of message is exchanged between the communication test device and the device under test, and the radio base station in the mobile communication system. The present invention is useful as a communication test apparatus that executes a communication test.

The block diagram which shows the structure of the communication test apparatus of one embodiment of this invention The block diagram which shows the structure of the signal transmission part of the 1st emulator of the communication test apparatus of one embodiment of this invention The block diagram which shows the structure of the signal transmission part of the 2nd emulator of the communication test apparatus of one embodiment of this invention The block diagram which shows the structure of the display part of the communication test apparatus of one embodiment of this invention The figure which shows an example of the trace result information displayed on the screen of the display part of the communication test apparatus of one embodiment of this invention The figure which shows an example of the measurement result information displayed on the screen of the display part of the communication test apparatus of one embodiment of this invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 5 Signal transmission / reception part 5a Time information generation part 5b Accumulation part 5c Measurement part 5d Reception part 5e Transmission part 6 Signal transmission / reception part 6a Time information generation part 6b Accumulation part 6c Measurement part 6d Reception part 6e Transmission part 8 Test apparatus 10 Communication test apparatus DESCRIPTION OF SYMBOLS 11 1st emulator 12 2nd emulator 13 Control unit 13a Procedure information storage part 13b Control signal generation part 13c Transmission / reception part 13d Display part 13e Delay amount calculation part 14 Measurement result display part 15 1st marker superimposition part 16 Trace result display part 17 1st 2 Marker superimposing section 18 Measurement result memory 19 Trace result memory 16a Display indicating where message is transmitted from where 16b Display message 16c Display parameter 16d Display time information 16e Display indicating the first emulator side 16f On the device under test side 16g Display indicating the second emulator side

Claims (9)

A first emulator (11) that performs wireless communication and a second emulator (12) that performs wired communication, and performs a communication test on a device under test that relays the wireless communication and the wired communication. A communication test apparatus (10),
Each of the first and second emulators includes at least one signal transmission / reception unit (5, 6) that transmits a signal to the device under test and receives a signal from the device under test,
The signal transmission / reception unit generates time information for generating transmission time information indicating a time when the signal is transmitted to the device under test and reception time information indicating a time when the signal is received from the device under test. Part (5a, 6a),
The transmission time information and the reception time information are added to the information represented by the signal transmitted to the device under test and the information represented by the signal received from the device under test, respectively, and the added information is the trace result of the communication test. A communication test apparatus comprising an accumulation unit (5b, 6b) for accumulating information. The time information generating unit of the signal transmitting / receiving unit of the first and second emulators receives radio waves from the artificial satellite, generates time information synchronized with each other from the received radio waves, and based on the generated time information, The transmission time information indicating the time when the signal is transmitted to the apparatus and the reception time information indicating the time when the signal is received from the device under test are generated. The communication test apparatus described. The signal transmitter / receiver of the first and second emulators detects a code error in the signal received from the device under test, and counts the detected code errors every predetermined time to receive the signal received from the device under test Measuring unit (5c, 6c) for measuring the code error rate of
The storage units of the signal transmitting / receiving units of the first and second emulators add the time information to information indicating the code error rate measured by the measuring unit, and store the added information as measurement result information of the communication test. The communication test apparatus according to claim 1, wherein the communication test apparatus is configured as described above. A procedure information storage unit (13a) that stores procedure information representing the scenario of the communication test, and a control signal generation unit that generates a control signal for controlling the first and second emulators based on the control procedure information The communication test apparatus according to claim 3, further comprising a control unit that controls the first and second emulators. The control unit transmits and receives the control signal to the first and second emulators and receives the trace result information and the measurement result information from the first and second emulators, and the communication The communication test apparatus according to claim 4, further comprising a display unit (13 d) for displaying a test result of the test. The display unit of the control unit includes a measurement result display unit (14) for displaying the measurement result on a screen, a trace result display unit (16) for displaying the trace result on the screen, and the measurement result displayed. A first marker superimposing unit (15) for superimposing a first marker on the screen, and a second marker superimposing unit (17) for superimposing a second marker on the screen on which the trace result is displayed, The communication test apparatus according to claim 5. The display unit of the control unit compares the time indicated by the time information of the measurement result indicated by the first marker with the time indicated by the time information of the trace result indicated by the second marker, and compares the first marker and the second marker. The position on the screen of one of the first marker and the second marker is updated so that the marker indicates the measurement result and the trace result at the same time, respectively. The communication test apparatus described. The control unit extracts the time information from the measurement result information received by the transceiver from the first and second emulators, and calculates a delay amount of the device under test based on the extracted time information The communication test apparatus according to claim 7, further comprising a calculation unit (13 e). 9. The communication test apparatus according to claim 1, wherein the device under test is a radio base station in a W-CDMA mobile communication system.

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