JP2017098651A - Mobile communication terminal testing device and mobile communication terminal testing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mobile communication terminal testing device and a mobile communication terminal testing method capable of achieving reduction in advance preparation time of a mobile communication terminal reception test and the suppression of deterioration in accuracy of a reception test result.SOLUTION: A mobile communication terminal testing device 10 comprises: a power control part 13a for adjusting signal intensity and noise intensity of a radio signal on the basis of set values of signal intensity and noise intensity; a transmission part 13b for transmitting the radio signal having the adjusted signal intensity and noise intensity to a mobile communication terminal 20; a measurement value acquisition part 15 for acquiring measurement values of the signal intensity and noise intensity of the radio signal received by the mobile communication terminal 20; and a difference calculation part 16 for calculating a first difference value indicating a difference between the set value and measurement value of the signal intensity and a second difference value indicating a difference between the set value and measurement value of the noise intensity. The power control part 13a corrects the set values of the signal intensity and noise intensity on the basis of the first difference value and the second difference value, and adjusts the signal intensity and noise intensity on the basis of each corrected set value.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a mobile communication terminal test apparatus and a mobile communication terminal test method for performing a communication test on a mobile communication terminal to be tested.

  In a mobile communication terminal acceptance test by a mobile communication carrier, as a preliminary preparation, the signal strength and noise strength (signal quality) of a radio signal (received signal) received by the mobile communication terminal are based on the test specifications. It is necessary to adjust the signal strength and noise strength of a radio signal (transmission signal) transmitted by the mobile communication terminal test apparatus so as to coincide with a predetermined reference value. If this adjustment is insufficient, the accuracy of the test result of the acceptance test is lowered.

  In preparation for the acceptance test described above, the tester performs an input operation on the operation unit of the mobile communication terminal test apparatus, and sets the signal strength and the noise strength in the mobile communication terminal test apparatus based on the reference value. Next, the tester performs an input operation on the above-described operation unit, and causes the mobile communication terminal test apparatus to transmit a radio signal based on the set values of the above-described signal strength and noise strength. A debugging device is connected to the mobile communication terminal that receives the radio signal. The debugging device is a device that measures the signal strength and noise strength of a radio signal received by the mobile communication terminal and displays the measured values on a monitor.

  The tester inputs the above-described debug device to cause the mobile communication terminal to perform measurement, and visually checks the above-described measurement value on the monitor of the debug device. Then, the tester calculates a difference value between the set value and the measurement value by a computer or mental calculation, and inputs the difference value to the file of the mobile communication terminal test apparatus by performing an input operation on the above-described operation unit. When the set value is corrected based on the difference value, the signal strength and noise strength of the radio signal received by the mobile communication terminal coincide with the reference value. However, if the signal strength and noise strength of the wireless signal do not match the reference value, the difference value acquisition procedure is executed again, and the acquired difference value is overwritten on the aforementioned file.

Japanese Patent No. 4095020

  However, in the advance preparation for the above-described acceptance test, since there are many manual parts by the tester, the preparation time tends to be long. In addition, tester input errors and calculation errors may occur. In this case, the signal strength and noise strength of the radio signal are not adjusted appropriately, and the accuracy of the test results of the acceptance test is reduced. It will be. Furthermore, in the above-described advance preparation, the debugging device is connected to the mobile communication terminal, but the debugging device is removed from the mobile communication terminal during the actual acceptance test. In this case, since the connection environment differs between the preparation for the acceptance test and the actual acceptance test, the accuracy of the test result of the acceptance test may be reduced due to the difference in the connection environment.

  The present invention solves the above-described problem, and a mobile communication terminal test apparatus and a mobile communication terminal test method capable of realizing a reduction in preparation time for a mobile communication terminal acceptance test and suppression of a decrease in accuracy of the acceptance test result. The purpose is to provide.

  The mobile communication terminal test apparatus according to claim 1, wherein the signal strength of the radio signal is based on a first set value indicating the signal strength of the radio signal and a second set value indicating the noise strength of the radio signal. And a power control unit (13a) that adjusts the noise strength, and a transmission unit (13b) that transmits a radio signal having the signal strength and the noise strength adjusted by the power control unit to the mobile communication terminal (20). ), And a first measurement value indicating the signal strength of the radio signal received by the mobile communication terminal and a second measurement value indicating the noise strength of the radio signal received by the mobile communication terminal, A measurement value acquisition unit (15) acquired from the mobile communication terminal, a first difference value indicating the difference between the first set value and the first measurement value, the second set value, and the second A difference meter for calculating a second difference value indicating a difference from the measured value And the power control unit corrects the first set value based on the first difference value calculated by the difference calculation unit and calculates the difference calculated by the difference calculation unit. Correcting the second set value based on a second difference value, and adjusting the signal strength and the noise strength based on the corrected first set value and second set value. Features.

  A mobile communication terminal test apparatus according to claim 2 is the mobile communication terminal test apparatus according to claim 1, wherein a measurement request unit that outputs a measurement request for requesting the mobile communication terminal to perform measurement ( 14), wherein the transmission unit transmits the measurement request output by the measurement request unit to the mobile communication terminal, and the mobile communication terminal responds to the measurement request transmitted by the transmission unit, The signal strength and noise strength of the radio signal are measured.

  The mobile communication terminal test apparatus according to claim 3 is the mobile communication terminal test apparatus according to claim 1 or 2, wherein the mobile communication terminal includes the first measurement value and the second measurement value. The measurement value acquisition unit analyzes the measurement report generated by the mobile communication terminal, and analyzes the first measurement value and the second measurement value from the measurement report. It is characterized by acquiring.

  Further, the mobile communication terminal test method according to claim 4, wherein the signal of the radio signal is based on the first set value indicating the signal strength of the radio signal and the second set value indicating the noise strength of the radio signal. A power control step (S2) for adjusting strength and noise strength, and a transmission step for transmitting a radio signal having the signal strength and noise strength adjusted by the power control step to the mobile communication terminal (20). (S3), a first measurement value indicating the signal strength of the radio signal received by the mobile communication terminal, and a second measurement value indicating the noise strength of the radio signal received by the mobile communication terminal A measurement value acquisition step (S6) for acquiring from the mobile communication terminal, a first difference value indicating the difference between the first setting value and the first measurement value, the second setting value, and the first No. showing the difference from the measured value of 2 A difference calculation step (S7) for calculating a difference value of the first correction value based on the first difference value calculated by the difference calculation step in the power control step, The second setting value is corrected based on the second difference value calculated by the difference calculating step, and the signal strength and the second setting value are corrected based on the corrected first setting value and the second setting value. The noise intensity is adjusted.

  Further, the mobile communication terminal test method according to claim 5 is the mobile communication terminal test method according to claim 4, wherein a measurement request step for outputting a measurement request for requesting the mobile communication terminal to perform measurement ( S4), and in the transmission step, the measurement request output in the measurement request step is transmitted to the mobile communication terminal, and in the measurement value acquisition step, the measurement request transmitted in the transmission step is added to the measurement request. Accordingly, the first measurement value and the second measurement value are obtained from the mobile communication terminal that has measured the signal strength and noise strength of the radio signal.

  The mobile communication terminal test method according to claim 6 is the mobile communication terminal test method according to claim 4 or 5, wherein the mobile communication terminal includes the first measured value and the second measured value. The measurement report including the measurement value is generated, and in the measurement value acquisition step, the measurement report generated by the mobile communication terminal is analyzed, and the first measurement value and the second measurement value are analyzed from the measurement report. It is characterized by acquiring.

  According to the mobile communication terminal test apparatus or the mobile communication terminal test method according to the present invention, it is possible to reduce the preparation time for the mobile communication terminal acceptance test and to suppress the decrease in accuracy of the acceptance test result.

It is a block diagram which shows schematic structure of the mobile communication terminal test apparatus which concerns on one Embodiment of this invention. It is a flowchart which shows the flow of the prior preparation of the mobile communication terminal acceptance test which concerns on one Embodiment of this invention. It is a figure which shows an example of the measurement report of LTE (Long Term Evolution) which concerns on one Embodiment of this invention. It is a figure which shows an example of the measurement report of W-CDMA (Wideband Code Division Multiple Access) which concerns on one Embodiment of this invention.

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

(Basic configuration)
As shown in FIG. 1, a mobile communication terminal test apparatus 10 according to an embodiment of the present invention is an apparatus for testing a mobile communication terminal 20. The mobile communication terminal test apparatus 10 switches the operation mode between a pre-mode for performing advance preparation for an acceptance test of the mobile communication terminal 20 and a test mode for performing an acceptance test after completion of the pre-preparation. Perform the test. In the following description, the prior mode will be basically described.

  The mobile communication terminal test device 10 includes an operation unit 11, a power setting unit 12, a pseudo base station device 13, a measurement request unit 14, a measurement value acquisition unit 15, a difference calculation unit 16, and a storage unit 17. I have. Note that the mobile communication terminal 20 usually measures the signal strength and noise strength of the received signal, and uses the first measurement value indicating the signal strength and the second measurement value indicating the noise strength as the mobile communication terminal. It can be transmitted to the test apparatus 10.

  The operation unit 11 is an input unit that receives an input operation of a tester. As the operation unit 11, for example, an input device such as a keyboard or a mouse, a GUI (Graphical User Interface), or the like can be used. The operation unit 11 is operated by a tester as necessary, for example, when setting the signal strength or noise strength of a radio signal.

  The power setting unit 12 includes a signal strength setting unit 12a and a noise strength setting unit 12b. The signal strength setting unit 12a sets the signal strength (for example, transmission power) of the radio signal and holds a first set value indicating the signal strength. The noise strength setting unit 12b sets the noise strength (for example, AWGN power: Additive White Gaussian Noise) of the radio signal, and holds a second set value indicating the noise strength.

  The pseudo base station apparatus 13 includes a power control unit 13a, a transmission unit 13b, and a reception unit 13c.

  Based on the first setting value and the second setting value set by the signal strength setting unit 12a and the noise strength setting unit 12b, the power control unit 13a performs signal strength of the radio signal transmitted by the transmission unit 13b. The signal strength and the noise strength of the radio signal are adjusted so that the noise strength becomes the first setting value and the noise strength becomes the second setting value.

  The transmitter 13b modulates the baseband signal, synthesizes a noise signal (for example, AWGN) with the modulated baseband signal as necessary, and transmits the resultant signal as a radio signal to the mobile communication terminal 20. At this time, the transmission unit 13b transmits a radio signal having the signal strength and the noise strength adjusted by the power control unit 13a. The noise signal described above may be generated by the transmission unit 13b or may be input to the transmission unit 13b from another device such as a noise generation unit.

  The receiving unit 13c receives and demodulates the radio signal transmitted from the mobile communication terminal 20. The receiving unit 13 c extracts a measurement result from the radio signal transmitted from the mobile communication terminal 20 and sends the measurement result to the measurement value acquiring unit 15.

  The pseudo base station apparatus 13 also includes a test control unit (not shown). The test control unit holds a test program (for example, a test script) of the acceptance test and test procedure data. The test control unit controls each unit based on various conditions, a predetermined test program, and test procedure data set by the preliminary preparation after the preliminary preparation for the acceptance test is completed, and executes the acceptance test.

  The measurement request unit 14 has a generation unit 14a. The generation unit 14a generates a measurement request (for example, a measurement request message) that requests the mobile communication terminal 20 to perform measurement. The measurement request unit 14 outputs the measurement request generated by the generation unit 14a and transmits the measurement request to the mobile communication terminal 20 via the transmission unit 13b.

  The measurement value acquisition unit 15 includes an analysis unit 15a. The analysis unit 15a analyzes the measurement result (for example, a measurement report message) transmitted from the reception unit 13c. The measurement value acquisition unit 15 analyzes the measurement result by the analysis unit 15a, and the first measurement value (for example, RSRP: Reference Signal Received Power) indicating the signal strength and the second measurement value indicating the noise strength from the measurement result. (RSRQ: Reference Signal Received Quality) is acquired, and the measured values are sent to the difference calculation unit 16. RSRP is a reference signal reception power, and RSRQ is a reference signal reception quality.

  The difference calculation unit 16 calculates a first difference value indicating a difference between the first set value set by the signal strength setting unit 12a and the first measurement value acquired by the measurement value acquisition unit 15. Further, the difference calculation unit 16 calculates a second difference value indicating a difference between the second setting value set by the signal strength setting unit 12a and the second measurement value acquired by the measurement value acquisition unit 15. To do.

  The storage unit 17 stores a difference value setting file 17a. The storage unit 17 writes the first difference value (signal strength difference value) and the second difference value (noise strength difference value) calculated by the difference calculation unit 16 in the difference value setting file 17a.

(Preparation flow for acceptance test)
Next, the flow of the preparation process for the acceptance test of the mobile communication terminal 20 performed by the mobile communication terminal test apparatus 10 will be described with reference to FIGS. Note that the operation mode of the mobile communication terminal test apparatus 10 is a preliminary mode for preparing for the acceptance test.

  As shown in FIG. 2, in step S <b> 1, the signal strength setting unit 12 a sets the input value of the signal strength input by the tester as a set value in accordance with the tester's input operation on the operation unit 11. The noise strength setting unit 12b obtains the noise strength using the input values of the signal strength and the noise strength input by the tester according to the input operation of the tester with respect to the operation unit 11, and the value Is a set value of noise intensity (details will be described later). The tester performs an input operation on the operation unit 11 and inputs a signal strength and a noise strength based on a reference value determined in advance according to the test specification. For this reason, the first set value is usually a reference value.

  In step S2, the power control unit 13a sets the first set value (signal strength set value) and the second set value (noise strength) set by the signal strength setting unit 12a and the noise strength setting unit 12b. The signal strength and the noise strength of the radio signal are adjusted based on the set value of. At this time, in the power control unit 13a, the signal strength of the radio signal transmitted by the transmission unit 13b is the first set value described above, and the noise strength of the radio signal transmitted by the transmission unit 13b is the second setting. The signal strength and noise strength of the radio signal are adjusted so as to be a value.

  In step S3, when the communication state between the mobile communication terminal test apparatus 10 and the mobile communication terminal 20 is established, the transmission unit 13b measures the signal strength and noise strength adjusted by the power control unit 13a during that time. A radio signal (RF signal) is transmitted to the mobile communication terminal 20. The radio signal for measurement is an RF signal including at least a carrier signal (carrier wave) and a noise signal. In this measurement radio signal, the signal strength of the carrier signal is the first set value, and the noise strength of the noise signal is the second set value.

  In step S4, the measurement request unit 14 transmits a measurement request message (measurement request) to the mobile communication terminal 20 via the transmission unit 13b after the establishment of the communication state. An example of the measurement request message is an rrcConnectionReconfiguration message. The transmitter 13b modulates the measurement request message (baseband signal) sent from the measurement request unit 14 and transmits a radio signal including the measurement request message to the mobile communication terminal 20.

  When the mobile communication terminal 20 demodulates the radio signal transmitted from the transmission unit 13b and grasps the above-described measurement request, the mobile communication terminal 20 performs measurement using the current operation mode as the measurement mode. The mobile communication terminal 20 measures the signal strength and noise strength of the received signal, and the first measurement value (for example, RSRP) indicating the signal strength and the second measurement value (for example, RSRQ) indicating the noise strength. Create a measurement report message containing Then, the mobile communication terminal 20 modulates the measurement report message (baseband signal) and transmits a radio signal including the measurement report message to the mobile communication terminal test apparatus 10.

  Here, when the communication standard is LTE, a measurement report as shown in FIG. 3 is created. In this measurement report, rsrpResult is the first measurement value indicating the signal strength, and rsrpResult is the second measurement value indicating the noise strength (see the black frame A1 in FIG. 3). In FIG. 3, rsrpResult is 66 and rsrpResult is 20. When the communication standard is W-CDMA, a measurement report as shown in FIG. 4 is created. In this measurement report, cpic-RSCP is the first measurement value indicating the signal strength, and cpich-Ec-N0 is the second measurement value indicating the noise strength (see the black frame A2 in FIG. 4). . In FIG. 4, cpic-RSCP is 41, and cpic-Ec-N0 is 38. Such a measurement report is transmitted from the mobile communication terminal 20 to the mobile communication terminal test apparatus 10 as a measurement report message.

  In step S5, the measurement value acquisition unit 15 receives a measurement report message (measurement response) from the mobile communication terminal 20 via the reception unit 13c. An example of a measurement report message is a measurement Report message. The receiving unit 13 c demodulates the radio signal transmitted from the mobile communication terminal 20, extracts a measurement report message from the radio signal, and sends the measurement report message to the measurement value acquiring unit 15.

  In step S6, the measurement value acquisition unit 15 analyzes the measurement report message sent from the reception unit 13c by the analysis unit 15a, and the first measurement value (measured value of signal strength) and the second value are measured from the measurement report message. Get the measured value (measured value of noise intensity). Then, the measurement value acquisition unit 15 sends the first measurement value and the second measurement value to the difference calculation unit 16.

  In step S7, the difference calculation unit 16 calculates the first difference value (signal) from the first set value preset by the signal strength setting unit 12a and the first measurement value sent from the measurement value acquisition unit 15. (Difference value of strength) is calculated. Further, the difference calculation unit 16 calculates a second difference value (noise intensity) from the second set value preset by the signal strength setting unit 12a and the second measurement value sent from the measurement value acquisition unit 15. Difference value).

  In step S8, the storage unit 17 uses the first difference value (signal strength difference value) and the second difference value (noise strength difference value) calculated by the difference calculation unit 16 as the difference value setting file 17a. Write to. This completes the preparation for the acceptance test.

  Thereafter, the operation mode of the mobile communication terminal test apparatus 10 is switched from the advance mode to the test mode, and the acceptance test is started. In the acceptance test, the power control unit 13a reads the first difference value and the second difference value written in the difference value setting file 17a, and based on the read first difference value and second difference value. The first set value and the second set value are corrected. Then, the power control unit 13a adjusts the signal strength and noise strength of the radio signal based on the corrected first setting value and second setting value. The transmission unit 13 b transmits a test radio signal having the signal strength and noise strength adjusted by the power control unit 13 a to the mobile communication terminal 20. Thus, since the test radio signal is output after being adjusted based on the corrected first set value and second set value, the signal strength of the radio signal received by the mobile communication terminal 20 is increased. The noise and the noise intensity will be in agreement with a reference value determined in advance based on the test specification.

  In the difference value setting file 17a, the initial value of the first difference value and the initial value of the second difference value are set to 0 (zero). These initial values are overwritten by the first difference value and the second difference value calculated by the difference calculation unit 16, but are reset to 0 when the acceptance test is completed. However, when the first difference value and the second difference value in the difference value setting file 17a are used in other acceptance tests after the acceptance test is completed, the difference values are left without being reset to zero. It is also possible.

  In advance preparation for the acceptance test, the first difference value and the second difference value may be written to the difference value setting file 17a at least once. However, in the acceptance test after the preliminary preparation, if the signal strength and noise strength of the radio signal do not match the reference value, the difference value acquisition step is executed again as necessary, and the acquired difference value is The difference value setting file 17a may be overwritten. By repeating the difference value acquisition process in this manner, the signal strength and noise strength of the radio signal can be brought close to the reference value and eventually matched.

(Example of difference calculation formula)
Next, an example of the difference calculation formula used in step S7 will be described.

When the communication standard is LTE and the first difference value (signal strength difference value) is obtained,
Difference value = setting value−conversion value of measurement value = setting value− (rsrpResult−140)
The following formula is used. Here, when the set value = −75 and rsrpResult (measured value) = 66 (see FIG. 3), the difference value = (− 75) − (66−140) = − 1 dB. The set value at this time is the input value (= reference value) of the signal strength (Power) input based on the reference value by the tester in step S1 described above.

When the communication standard is LTE and the second difference value (noise intensity difference value) is obtained,
Difference value = setting value−conversion value of measurement value = setting value− (rsrqResult ÷ 2-19.5)
The following formula is used. Here, when the set value = −10 and rsrqResult (measured value) = 20 (see FIG. 3), the difference value = (− 10) − (20 ÷ 2−19.5) = − 0.5 dB. Become. As the set values at this time, the input values of the signal strength (Power) and noise strength (AWGN) input based on the reference value by the tester in the above-described step S1 are used, and Power and (Power + AWGN) It is a value (= reference value) obtained from the ratio.

When the communication standard is W-CDMA and the first difference value (signal strength difference value) is obtained,
Difference value = setting value−conversion value of measurement value = setting value− (cpich-RSCP-115)
The following formula is used. Here, when the set value = −75 and cpich-RSCP (measured value) = 41 (see FIG. 4), the difference value = (− 75) − (41−115) = − 1 dB. Note that the set value at this time is the input value (= reference value) of the signal strength (Power) input based on the reference value by the tester in step S1 as described above.

When the communication standard is W-CDMA and the second difference value (noise intensity difference value) is obtained,
Difference value = setting value−conversion value of measurement value = setting value− (cpich-Ec-N0 ÷ 2-24)
The following formula is used. Here, when the set value = −10 and cpich-Ec-N0 (measured value) = 38 (see FIG. 4), the difference value = (− 10) − (38 ÷ 2−24) = − 5 dB. Become. Note that the set values at this time are the input values (= reference values) of the signal strength (Power) and noise strength (AWGN) input based on the reference values by the tester in the above-described step S1 as described above. Is a value obtained from the ratio of Power and (Power + AWGN).

  The first difference value and the second difference value obtained in this way are written in the difference value setting file 17a in the storage unit 17. Thereafter, in the acceptance test, the first difference value and the second difference value are read from the difference value setting file 17a by the power control unit 13a and used, and the first setting value and the second difference value are determined based on the difference value. The second set value is corrected.

  For example, as described above, when the difference value = (− 75) − (66−140) = − 1 dB, the first set value (reference value) is −75 dB, and the first difference value is -1 dB. In this case, the signal strength of the received signal is 1 dB larger than the reference value. For this reason, if the set value of the transmission signal is previously reduced by 1 dB, the signal strength of the reception signal becomes the reference value. Therefore, in the first set value described above, −75 dB is reduced by 1 dB (−75−1 = −76), and is corrected to −76 dB. When a radio signal is transmitted based on this set value, the signal strength of the received signal increases by 1 dB (−76 + 1 = −75) and becomes −75 dB. In this way, the signal strength of the received signal matches the reference value (−75 dB) determined in advance based on the test specification. The correction of the second set value is the same flow.

  As described above, according to the present embodiment, in the preparation for the acceptance test of the mobile communication terminal 20, the first set value indicating the signal strength of the transmission signal and the second set value indicating the noise strength are obtained. The measurement value acquisition unit 15a obtains the first measurement value indicating the signal strength of the received signal and the second measurement value indicating the noise strength, which are set by the signal strength setting unit 12a and the noise strength setting unit 12b. . Then, the first difference value indicating the difference between the first set value and the first measured value and the second difference value indicating the difference between the second set value and the second measured value are obtained by the difference calculation unit 16. Calculated. In the acceptance test, the first set value is corrected by the power control unit 13a based on the first difference value, and the second set value is used by the power control unit 13a based on the second difference value. Used after being corrected.

  Thereby, the radio signal transmitted from the transmission unit 13b is adjusted and output according to the first set value and the second set value corrected based on the first difference value and the second difference value. The signal strength and the noise strength of the radio signal received by the mobile communication terminal 20 coincide with a reference value determined in advance based on the test specifications. As described above, in the preparation for the acceptance test, the manual part of the tester is omitted, and it is possible to suppress the extension of the preparatory time due to the manual of the tester, the mistake, and the like. Thereby, it is possible to shorten the preparation time for the acceptance test, and it is possible to suppress a decrease in accuracy of the acceptance test result. In addition, since no debugging device is connected to the mobile communication terminal 20 and the connection environment is the same between the preparation for the acceptance test and the actual acceptance test, the accuracy of the acceptance test result due to the difference in the connection environment is ensured. The decrease can also be suppressed.

  In addition, a measurement request for requesting the mobile communication terminal 20 to execute measurement is issued to the mobile communication terminal 20 by the measurement request unit 14. In response to this measurement request, the mobile communication terminal 20 performs measurement by shifting the operation mode from, for example, the normal mode to the measurement mode. Thus, since the operation mode of the mobile communication terminal 20 automatically becomes the measurement mode, it is not necessary to set the operation mode to the measurement mode manually by the tester. As a result, the manual part of the examiner is omitted in the preparation for the acceptance test, and the preparation time for the acceptance test can be further shortened.

  In the above-described embodiment, the measurement request unit 14 issues a measurement request to the mobile communication terminal 20 to automatically set the operation mode of the mobile communication terminal 20 to the measurement mode. However, the present invention is not limited to this. For example, the operation mode of the mobile communication terminal 20 may be set to the measurement mode by pressing a predetermined key of the mobile communication terminal 20 by the tester. Alternatively, an input device for changing the operation mode may be connected to the mobile communication terminal 20 and the tester may operate the input device so that the operation mode of the mobile communication terminal 20 is set to the measurement mode. However, in order to omit the manual part of the tester in the preparation for the acceptance test, it is desirable that the operation mode of the mobile communication terminal 20 is automatically set to the measurement mode according to the measurement request as described above.

  In the above-described embodiment, the storage unit 17 stores the first difference value and the second difference value. However, the present invention is not limited to this, and the set value after correction based on the first difference value. Alternatively, the corrected setting value based on the second difference value is stored in the storage unit 17, and the corrected setting value can be read and used in the acceptance test.

DESCRIPTION OF SYMBOLS 10 Mobile communication terminal test apparatus 11 Operation part 12 Power setting part 12a Signal strength setting part 12b Noise intensity setting part 13 Pseudo base station apparatus 13a Power control part 13b Transmission part 13c Reception part 14 Measurement request part 14a Generation part 15 Measurement value Acquisition unit 15a Analysis unit 16 Difference calculation unit 17 Storage unit 17a Difference value setting file 20 Mobile communication terminal

Claims (6)

A power control unit (13a) that adjusts the signal strength and noise strength of the wireless signal based on the first setting value indicating the signal strength of the wireless signal and the second setting value indicating the noise strength of the wireless signal. When,
A transmission unit (13b) for transmitting a radio signal having the signal strength and the noise strength adjusted by the power control unit to a mobile communication terminal (20);
A first measurement value indicating the signal strength of the radio signal received by the mobile communication terminal and a second measurement value indicating the noise strength of the radio signal received by the mobile communication terminal are used as the mobile communication terminal. A measurement value acquisition unit (15) acquired from
A first difference value indicating a difference between the first set value and the first measured value and a second difference value indicating a difference between the second set value and the second measured value are calculated. A difference calculation unit (16);
With
The power control unit corrects the first setting value based on the first difference value calculated by the difference calculation unit, and based on the second difference value calculated by the difference calculation unit. The mobile communication terminal test apparatus, wherein the second set value is corrected, and the signal strength and the noise strength are adjusted based on the corrected first set value and second set value. . A measurement request unit (14) for outputting a measurement request for requesting the mobile communication terminal to perform measurement;
The transmitter transmits the measurement request output by the measurement request unit to the mobile communication terminal;
The mobile communication terminal test apparatus according to claim 1, wherein the mobile communication terminal measures a signal strength and a noise strength of the radio signal in response to the measurement request transmitted by the transmission unit. The mobile communication terminal generates a measurement report including the first measurement value and the second measurement value,
The measurement value acquisition unit analyzes the measurement report generated by the mobile communication terminal and acquires the first measurement value and the second measurement value from the measurement report. Alternatively, the mobile communication terminal test apparatus according to claim 2. A power control step (S2) for adjusting the signal strength and noise strength of the wireless signal based on the first setting value indicating the signal strength of the wireless signal and the second setting value indicating the noise strength of the wireless signal. When,
A transmission step (S3) for transmitting a radio signal having the signal strength and the noise strength adjusted in the power control step to a mobile communication terminal (20);
A first measurement value indicating the signal strength of the radio signal received by the mobile communication terminal and a second measurement value indicating the noise strength of the radio signal received by the mobile communication terminal are used as the mobile communication terminal. A measurement value acquisition step (S6) acquired from:
A first difference value indicating a difference between the first set value and the first measured value and a second difference value indicating a difference between the second set value and the second measured value are calculated. Difference calculation step (S7);
Have
In the power control step, the first setting value is corrected based on the first difference value calculated in the difference calculation step, and based on the second difference value calculated in the difference calculation step. A mobile communication terminal test method comprising: correcting the second set value; and adjusting the signal strength and the noise strength based on the corrected first set value and the second set value. . A measurement request step (S4) for outputting a measurement request for requesting the mobile communication terminal to perform measurement;
In the transmission step, the measurement request output in the measurement request step is transmitted to the mobile communication terminal,
In the measurement value acquisition step, the first measurement value and the second measurement value are received from the mobile communication terminal that has measured the signal strength and noise strength of the radio signal in response to the measurement request transmitted in the transmission step. The mobile communication terminal test method according to claim 4, wherein the measured value is acquired. The mobile communication terminal generates a measurement report including the first measurement value and the second measurement value,
5. The measurement value acquisition step includes analyzing the measurement report generated by the mobile communication terminal and acquiring the first measurement value and the second measurement value from the measurement report. Alternatively, the mobile communication terminal test method according to claim 5.

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