JP7193583B1 - Mobile terminal test system and mobile terminal test method - Google Patents

Abstract

A mobile terminal testing system and mobile terminal testing method capable of improving the reliability of test results while satisfying the conformance test requirements of the 3GPP standards are provided. A mobile terminal testing system (1) for executing a test of a test case defined by the 3GPP standard for a mobile terminal (100), and a DL control section (22a) for controlling transmission of a DL signal to the mobile terminal (100); A desired signal is detected by the test execution control unit 22, which includes a UL detection unit 22b that detects a UL signal transmitted from the mobile terminal 100, and causes the measurement device 10 to perform test measurement of the test case, and the UL detection unit 22b. When the first determination unit 24b determines that the desired signal is not detected by the UL detection unit 22b, the test case test is not performed normally. and a display unit 31 for displaying a message to that effect. [Selection drawing] Fig. 1

Description

The present invention relates to a mobile terminal testing system and a mobile terminal testing method, and more particularly to a mobile terminal testing system and a mobile terminal testing method for executing a conformance test of mobile terminals conforming to the 3GPP standards.

In recent years, 5G services that operate millimeter waveband frequencies have started in various countries, and the production of 5G mobile terminals such as 5G smartphones is in full swing. A 5G mobile terminal design and development company or its manufacturing factory measures the output level and reception sensitivity of transmission radio waves through the wireless communication antenna provided in the 5G mobile terminal, and the 5G mobile terminal meets a predetermined standard. A performance test is performed to determine whether the requirements are met.

Among such performance tests, there is a conformance test for confirming whether mobile terminals and base station apparatuses conform to the 3GPP (3rd Generation Partnership Project) standard. In the conformance test, a test case (Test Case: TC), which defines the test purpose, pass/fail criteria, test conditions, test items identified by Test ID, and test procedure, is executed.

Patent Literature 1 describes a test system that controls various test devices and performs tests corresponding to test cases corresponding to the functions, performance, etc., of one mobile terminal.

JP 2011-199719 A

In the conformance test conforming to the 3GPP standard, as pass/fail judgment criteria for each test item of test cases, a pass (PASS) judgment criterion and a fail (FAIL) judgment criterion are defined depending on the test item. However, there is a possibility that a measurement result (incorrect judgment) that accidentally satisfies the PASS and FAIL judgment criteria, or a measurement result that cannot be judged by these judgment criteria (failed judgment) is obtained.

For example, as shown in FIG. 6, if the PASS criterion of a certain test case is that the output power of the mobile terminal should be equal to or lower than a predetermined upper limit, then the mobile terminal is not outputting a signal. Even without it (ie, even if the output power is zero), the PASS criterion will be met, and an incorrect decision will be obtained. Also, for example, if you try to make a test judgment in a state where a UL signal containing information such as PRACH (Physical Random Access CHannel) that should not exist in the test procedure is being generated, unintended results may be obtained. is more likely to result in an incorrect decision, resulting in a decision failure.

Conventional test systems have the problem that they cannot detect the above-described incorrect judgments and failures of judgments.

The present invention has been made in order to solve such conventional problems, and a mobile terminal test system capable of improving the reliability of test results while satisfying the requirements of the conformance test of the 3GPP standard. It is an object of the present invention to provide a mobile terminal testing method.

In order to solve the above problems, a mobile terminal test system according to the present invention is a mobile terminal test system that executes one or more tests of test cases defined by the 3GPP standards on a mobile terminal, wherein the mobile terminal and a UL detection unit for detecting the UL signal transmitted from the mobile terminal, and a test execution control unit that causes the measurement device to perform test measurement of the test case. and a first determination unit for determining whether or not a desired signal is detected by the UL detection unit , a second determination unit for determining whether or not the test of the test case is completed, and the first determination unit However, when it is determined that the desired signal is not detected by the UL detection unit, a display unit that displays that the test case test is not performed normally, and the DL control unit includes the It is configured to perform control to transmit a DL signal for transmitting a UL signal from the mobile terminal when the second determination unit determines that the test of the test case has ended .

With this configuration, the mobile terminal testing system according to the present invention can test a test case conforming to the 3GPP standard by determining whether or not the UL signal containing information indicating the terminal state of the mobile terminal is the desired signal. It is possible to detect whether or not is being performed normally. As a result, the mobile terminal test system according to the present invention can improve the reliability of test results while satisfying the conformance test requirements of the 3GPP standards.
Further, with this configuration, the mobile terminal testing system according to the present invention transmits a DL signal for transmitting a UL signal from the mobile terminal when it is determined that the test of the test case is completed. Accordingly, the mobile terminal testing system according to the present invention can determine whether or not the obtained test results are appropriate by confirming whether or not the mobile terminal is operating normally at the end of the test. can be done.

Further, in the mobile terminal test system according to the present invention, the test execution control unit executes the test case when the first determination unit determines that the desired signal is not detected by the UL detection unit. It may be configured to cause the measurement device to re-execute the intermediate test.

With this configuration, the mobile terminal testing system according to the present invention causes the measuring device to re-execute the test during execution of the test case when the UL signal including the information indicating the terminal state of the mobile terminal is not the desired signal. It's like As a result, the mobile terminal testing system according to the present invention can detect an abnormality in the terminal state of the mobile terminal at an early stage, and can re-execute a test that has a high possibility of being inappropriate.

Further, in the mobile terminal testing system according to the present invention, when the number of times the test of the test case has been re-executed reaches a predetermined value, the test execution control section re-executes the test for which the number of times of re-execution has reached the predetermined value. It may be configured to stop the execution.

With this configuration, the mobile terminal testing system according to the present invention stops re-execution of the test for which the number of re-executions reaches the predetermined value when the number of re-executions of the test case reaches the predetermined value. ing. As a result, the mobile terminal testing system according to the present invention can shorten the testing time by skipping the test from which test results that are likely to be inappropriate are continuously obtained and executing other tests. can.

Further, a mobile terminal testing method according to the present invention is a mobile terminal testing method for executing one or more tests of test cases defined by the 3GPP standards on a mobile terminal, and transmitting a DL signal to the mobile terminal. a DL control step for performing control; and a UL detection step for detecting a UL signal transmitted from the mobile terminal. a first determination step of determining whether a desired signal has been detected by the UL detection step ; a second determination step of determining whether the testing of the test case has been completed; and a display step of displaying that the test of the test case has not been performed normally when it is determined that the desired signal was not detected by The mobile terminal is configured to transmit a DL signal for transmitting a UL signal when it is determined that the test of the test case is completed .

Further, in the mobile terminal testing method according to the present invention, the test execution control step executes the test case when the first determination step determines that the desired signal is not detected by the UL detection step. It may be configured to cause the measurement device to re-execute the intermediate test.

Further, in the mobile terminal testing method according to the present invention, when the number of re-executions of the test of the test case reaches a predetermined value, the test execution control step includes re-executing the test for which the number of re-executions has reached the predetermined value. It may be configured to stop the execution.

The present invention provides a mobile terminal testing system and a mobile terminal testing method capable of improving the reliability of test results while satisfying the conformance test requirements of the 3GPP standards.

1 is a block diagram showing the configuration of a mobile terminal testing system according to an embodiment of the present invention; FIG. 1 is a block diagram showing the configuration of a measuring device included in a mobile terminal testing system according to an embodiment of the present invention; FIG. 4 is a flow chart showing processing of a mobile terminal testing method using the mobile terminal testing system according to the embodiment of the present invention; 4 is a table showing a display example of test results for each test item in a certain combination of test conditions. FIG. 4 is a flowchart showing processing that is performed in parallel with the processing in the flowchart of FIG. 3; FIG. FIG. 10 is a diagram showing an example of a case in which a test judgment is proper and a case in which it is improper;

Hereinafter, embodiments of a mobile terminal testing system and a mobile terminal testing method according to the present invention will be described with reference to the drawings.

A mobile terminal test system 1 according to the present embodiment shown in FIG. to the mobile terminal 100. The mobile terminal test system 1 includes a measurement device 10 , a control device 20 , an operation section 30 and a display section 31 .

The measurement device 10 establishes a wireless communication connection or a wired communication connection with the mobile terminal 100 to measure the transmission/reception characteristics of the mobile terminal 100 required for testing test cases defined by the 3GPP standards, and also measures the communication state of the mobile terminal 100. And information for determining whether the operating state (hereinafter also referred to as "terminal state") is normal or not is output. The terminal state is, for example, a state in which the power of the mobile terminal 100 is off, the mobile terminal 100 is in a call-connected state, or the mobile terminal 100 is in a communication-disabled state. The measuring apparatus 10 can measure, for example, transmission power, error vector amplitude (EVM), IQ constellation, spectrum, etc., as transmission characteristics of the mobile terminal 100 . Also, the measuring device 10 can measure, for example, packet error rate (PER), frame reception rate (FRR), etc., as reception characteristics of the mobile terminal 100 .

As shown in FIG. 2 , the measuring device 10 has an oscillator 11 , an RF transmitter/receiver 12 , a BB transmitter 13 and a BB receiver 14 .

The oscillation unit 11 includes a reference signal generator 11a that generates a reference signal (synchronization signal) for synchronizing the phases of the operating clocks of the RF transmission/reception unit 12, the BB transmission unit 13, and the BB reception unit 14 and performing frequency conversion. have For example, the operating clock frequency of the RF transmitting/receiving section 12 is several hundred MHz to several tens of GHz, and the operating clock frequency of the BB transmitting section 13 and the BB receiving section 14 is several hundred MHz.

RF transmitting/receiving section 12 includes n excitation RF sections 12#1 to 12#n that transmit and receive RF signals to and from a plurality of antennas provided in mobile terminal 100, and RF measuring section 12a. The RF signals transmitted and received by the RF transmitting/receiving unit 12 include a signal for performing test case test measurement and a signal for detecting the terminal state of the mobile terminal 100 .

A reference signal generated by the reference signal generator 11a is input to each of the excitation RF units #1 to #n. Each of excitation RF units 12#1 to 12#n converts an RF signal received from mobile terminal 100 (hereinafter also referred to as “UL signal”) into a baseband signal (BB_UL signal) and outputs the baseband signal to BB receiving unit 14. do. In addition, each of the excitation RF units #1 to #n converts the baseband signal (BB_DL signal) input from the BB transmission unit 13 into an RF signal (hereinafter also referred to as “DL signal”) and transmits the signal to the mobile terminal 100. Send. The RF measurement unit 12a can measure the transmission power of the mobile terminal 100, for example, by measuring the power of the BB_UL signals output from the excitation RF units 12#1 to 12#n.

The BB transmitter 13 has a signal generator 13a and a DL modulator 13b. The signal generator 13a generates an I-component baseband signal and a Q-component baseband signal, which is a quadrature component signal thereof. The DL modulation unit 13b performs frequency conversion on each of the I-component baseband signal and the Q-component baseband signal using the reference signal from the reference signal generator 11a, and further modulates them to output a BB_DL signal by combining the two. process.

The BB reception unit 14 has a UL demodulation unit 14a and a UL measurement unit 14b. The UL demodulation section 14a demodulates the BB_UL signal input from the excitation RF sections 12#1 to 12#n to generate an I component baseband signal and a Q component baseband signal that are orthogonal to each other. Based on the I component baseband signal and the Q component baseband signal demodulated by the UL demodulation unit 14a, the UL measurement unit 14b analyzes results such as the IQ constellation of the UL signal transmitted from the mobile terminal 100, Layer 1 , layer 2, and layer 3, various information exchanged between the mobile terminal 100 and the RF transmitting/receiving unit 12 are acquired.

Here, layer 1 is a physical layer and consists of a PHY (PHYsical layer). Layer 2 is a data link layer and consists of MAC (Medium Access Control layer), RLC (Radio Link Control layer), and PDCP (Packet Data Convergence Protocol layer). Layer 3 is a network layer and consists of an RRC (Radio Resource Control layer).

Regarding the PHY, the DL modulation unit 13b and the UL demodulation unit 14a modulate and demodulate communication data transmitted and received between the mobile terminal 100 and the RF transmission/reception unit 12. FIG. Regarding the PHY, the DL modulation section 13b and the UL demodulation section 14a perform multiplexing, channel coding, and the like in order to transmit and receive communication data. Regarding MAC, the DL modulation unit 13b and the UL demodulation unit 14a perform data conversion between the lower layer PHY and the upper layer RLC, PDCP, and RRC. Regarding RLC, DL modulation section 13b and UL demodulation section 14a perform processing such as flow control with mobile terminal 100, error data processing, and data retransmission. Regarding PDCP, the DL modulation unit 13b and the UL demodulation unit 14a perform concealment, validity confirmation, order sorting, header compression, and the like. Regarding RRC, the DL modulation unit 13b and the UL demodulation unit 14a set a radio bearer, which is a virtual connection established in a radio section with the mobile terminal 100, and notify the mobile terminal 100 of system information and call information. do

The control device 20 is composed of, for example, a microcomputer or a personal computer including a CPU, ROM, RAM, HDD, etc., and controls the operations of the above-described components that make up the mobile terminal testing system 1 . In addition, the control device 20 transfers a predetermined program stored in the ROM or the like to the RAM and executes it by the CPU. At least part of the unit 24, pass/fail determination unit 25, and test result storage unit 26 can be configured by software. Note that at least a part of the test case storage unit 21, test execution control unit 22, state storage unit 23, terminal state determination unit 24, pass/fail determination unit 25, and test result storage unit 26 is FPGA (Field Programmable Gate Array) or A digital circuit such as an ASIC (Application Specific Integrated Circuit) can also be used. Alternatively, at least a part of the test case storage unit 21, the test execution control unit 22, the state storage unit 23, the terminal state determination unit 24, the pass/fail determination unit 25, and the test result storage unit 26 may perform hardware processing and predetermined processing by digital circuits. It is also possible to combine appropriately software processing by the program of .

The test case storage unit 21 stores information on test cases for conformance tests conforming to the 3GPP standards.

The test execution control unit 22 includes a DL control unit 22a that controls transmission of DL signals to the mobile terminal 100, and a UL detection unit 22b that detects UL signals transmitted from the mobile terminal 100. It controls the measuring device 10 to measure the test of the test case read out from.

The DL control unit 22a controls transmission of a DL signal from the measuring device 10. FIG. Further, the DL control unit 22a transmits a DL signal for transmitting a UL signal from the mobile terminal 100 from the measurement device 10 when the second determination unit 24c, which will be described later, determines that the test of the test case has ended. It is designed to control.

In addition to detecting the UL signal transmitted from the mobile terminal 100, the UL detection unit 22b detects the presence or absence of a specific RF signal output from the RF transmission/reception unit 12 of the measurement device 10, and the information output from the RF measurement unit 12a. Information such as the power value of the BB_UL signal and information such as the analysis result output from the UL measurement unit 14b and the state of each layer are detected.

For example, the UL detection unit 22b detects a specific RRC response based on the RRC setting at the time of testing in the RRC/NAS (Non Access Stratum) state. This specific RRC response is an SCG (Secondary Cell Group) failure report, a response to paging, or the like. Further, for example, the UL detection unit 22b detects the occurrence of communication (UL/DL handshake) based on the setting of layer 2 regarding the RRC state. Further, for example, the UL detection unit 22b, for the RRC state, based on the setting of Layer 1, SRS (Sounding Reference Signal) and CRC (Cyclic Redundancy Check) error, RLF (Radio Link Failure) such as suspected PRACH identification to detect signals or information of

Also, the UL detector 22b detects, for example, the following signals as UL signals that can be detected without disturbing the test environment of each test item in the conformance test conforming to the 3GPP standard.

In a test in which a UL signal is transmitted from the mobile terminal 100 to the measuring device 10 by transmitting a DL signal from the measuring device 10 to the mobile terminal 100, the UL detection unit 22b detects PRACH, SRS (Sounding Reference Signal), PUCCH (Physical Uplink Control CHannel), PUSCH (Physical Uplink Shared CHannel), and other such UL signals are detected as “desired signals”. In other words, the desired signal is a signal that should be transmitted from the mobile terminal 100 according to the communication protocol. Detection of PUCCH here includes, for example, detection of throughput generation by HARQ ACK (Hybrid Automatic Repeat reQuest-ACKnowledgement), arbitrary lower limit value of CSI (Channel State Information) report, and the like. Further, detection of PUSCH here includes detection of measurement report, for example.

In addition, in a test in which a UL signal is not originally transmitted from the mobile terminal 100 to the measuring device 10 even if the DL signal is transmitted from the measuring device 10 to the mobile terminal 100, the UL detection unit 22b detects SCG failure, 4G detach, 5G A UL signal containing information such as deregistration, PRACH, etc. is detected as an undesired signal (a signal that is not a "desired signal"). In other words, an undesired signal is a signal that should not be transmitted from the mobile terminal 100 according to the communication protocol.

In addition, in the post-test state, a DL signal for confirming the post-test terminal state is transmitted from the measuring device 10 to the mobile terminal 100 . At this time, the UL detection unit 22b detects, as a desired signal, a UL signal including information such as a PRACH including a paging response during RRC_IDLE, a PRACH during cell reselection in the detach state, and an RRC release response during RRC_CONNECTED.

Further, the test execution control unit 22 extracts the information included in the DL signal transmitted from the measuring device 10 to the mobile terminal 100 and the information included in the UL signal detected by the UL detection unit 22b to the terminal of the mobile terminal 100. It is stored in the state storage unit 23 as state information.

The terminal state determination unit 24 includes a 0th determination unit 24a, a first determination unit 24b, and a second determination unit 24c. Based on the information stored in the state storage unit 23, the 0th determination unit 24a determines whether the UL detection unit 22b has detected the UL signal.

Based on the information stored in the state storage section 23, the first determination section 24b determines whether or not the desired signal is detected by the UL detection section 22b. When the first determination unit 24b determines that the desired signal is not detected by the UL detection unit 22b, the test execution control unit 22 causes the display unit 31 to display that the test case test is not performed normally. It's like

When the 0th determination unit 24a determines that the UL signal is not detected by the UL detection unit 22b, the second determination unit 24c determines that the test of the test case has ended based on the information stored in the state storage unit 23. or not.

When the first determination unit 24b determines that the desired signal is not detected by the UL detection unit 22b, the test execution control unit 22 causes the measurement apparatus 10 to re-execute the test in which the test case is being performed. Further, when the number of re-executions of the test of the test case reaches a predetermined value, the test execution control unit 22 stops re-executing the test for which the number of re-executions has reached the predetermined value. Then, when there is a test scheduled to be executed next, the test execution control section 22 controls the measuring apparatus 10 to execute the test scheduled to be executed.

The pass/fail judgment unit 25 judges whether the test result of the test case is pass (PASS) or fail (FAIL) based on the result of measurement by the measuring device 10 and the pass/fail judgment criteria. Furthermore, the pass/fail determination unit 25 stores in the test result storage unit 26 whether the test result for each test condition or combination of test conditions of the executed test cases is PASS or FAIL. .

The test conditions are conditions set in the measuring device 10 in order to test the frequency, strength, and phase of RF signals transmitted and received by the mobile terminal 100 . Test conditions include, for example, test frequency [Low/Mid/High Range], BWP arrangement [Low/Mid/High test channel bandwidth], BWP bandwidth, SCS (Subcarrier Spacing) [Lowest, Mid, Highest], RB (Resource Block) arrangement, modulation scheme, SNR (Signal-to-Noise Ratio) limit, TCI (Transmission Configuration Indicator) QCL (Quasi Co-Location) setting [SSB (Synchronization Signal / PBCH block) / CSI-RS (Channel State Information Reference Signal)].

The operation unit 30 is for receiving an operation input by the user, and is configured by a touch panel including a touch sensor for detecting a contact position by a touch operation on an input surface corresponding to the display screen of the display unit 31, for example. . When the user touches the position of a specific item displayed on the display screen with a finger, stylus, or the like, the operation unit 30 recognizes the match between the position detected by the touch sensor on the display screen and the position of the item. As a result, a signal for executing the function assigned to each item is output to the control device 20 . The operation unit 30 may be operably displayed on the display unit 31, or may include an input device such as a keyboard or mouse.

The specification of the mobile terminal 100 and the parameters of various test conditions can be set by the user's operation input to the operation unit 30 .

The display unit 31 is composed of a display device such as a liquid crystal display or a CRT, and displays various display contents such as setting screens and test results related to measurement of transmission/reception characteristics of the mobile terminal 100 by the measuring device 10 based on display control by the control device 20. is displayed on the display screen. The display contents include, for example, the test case execution order schedule, the measurement result of the transmission/reception characteristics of the mobile terminal 100 by the measurement device 10, and the like. Furthermore, the display unit 31 displays operation targets such as buttons, soft keys, pull-down menus, and text boxes for setting various conditions.

A mobile terminal testing method using the mobile terminal testing system 1 will be described below with reference to the flowchart of FIG. Here, for the 5G band n1, a case of executing a test case regarding the characteristics of the maximum transmission level of the mobile terminal 100 will be described as an example. In addition, each test condition is an example for description.

First, the test execution control unit 22 sets one of the Low/Mid/High Range of the 5G band n1 to the measuring device 10 (step S11).

Next, the test execution control unit 22 sets one of 10 MHz, 20 MHz, and 40 MHz as the BWP bandwidth in the measuring device 10 (step S12).

Next, the test execution control unit 22 sets either 15 kHz or 30 kHz as the SCS to the measuring device 10 (step S13). The above steps S11 to S13 are steps for setting test conditions.

Next, the test execution control unit 22 causes the measurement device 10 to start measurement of the test items with test IDs of 1 to 6 under the combination of test conditions set in steps S11 to S13 (test execution control step S14). This step S14 includes a DL control step in which the DL control unit 22a controls transmission of a DL signal to the mobile terminal 100, and a UL detection step in which the UL detection unit 22b detects a UL signal transmitted from the mobile terminal 100. included. Further, in parallel with the test procedure in step S14, the process of the flowchart of FIG. 5, which will be described later, is repeatedly executed.

Next, the pass/fail determination unit 25 determines whether the test result of the test item executed in step S14 is PASS or FAIL based on the measurement result of the maximum transmission level by the measuring device 10 (step S15). . Also, the pass/fail determination unit 25 causes the test result storage unit 26 to store the test results.

Next, the test execution control unit 22 determines whether re-execution of the test is recommended in the process of the flowchart of FIG. 5 (step S16). If re-execution of the test is recommended, the test execution control unit 22 ends the test of the test item being executed and executes the process of step S17. On the other hand, if re-execution of the test is not recommended, the test execution control unit 22 completes the test of the test item being executed, and then executes the process of step S18.

In step S17, the test execution control unit 22 determines whether or not the number of re-executions of the test of the test item being executed has reached a predetermined upper limit. When the number of times of re-executing the test of the test item being executed reaches the predetermined upper limit, the test execution control unit 22 stops re-executing the test of the test item being executed, and then performs step S18. Execute the process. On the other hand, if the number of re-executions of the test for the test item being executed has not reached the predetermined upper limit, the processing from step S14 onward is executed again.

In step S18, the test execution control section 22 determines whether or not there are any unexecuted test items remaining in the combination of test conditions set in steps S11 to S13. If there are unexecuted tests for test items in the combination of test conditions set in steps S11 to S13, the processes from step S14 onward are executed again. On the other hand, when the tests for all test items have been completed in the combination of test conditions set in steps S11 to S13, the process of step S19 is executed.

In step S19, the test execution control unit 22 controls the display of the test results of the test items under the combination of test conditions set in steps S11 to S13 on the display screen of the display unit 31, as shown in FIG. In step S17, the test result of the test determined to have reached the predetermined upper limit number of times of re-execution is not displayed on the display unit 31, or a message indicating that the reliability of the test result is low is displayed. It is desirable to be displayed in section 31 . FIG. 4 shows an example in which the reliability of the test result of the test item with Test ID=4 is low.

Next, the test execution control unit 22 determines whether or not there remains a combination of test conditions that have not been set in steps S11 to S13 (step S20). If there remains a combination of test conditions that have not been set, the processing from step S11 onward is executed again. On the other hand, when all combinations of test conditions are set, a series of processing ends.

In this manner, the test execution control section 22 executes the test for each test item while changing the combination of test conditions in steps S11 to S13.

Processing performed in parallel with step S14 of the flowchart of FIG. 3 will be described below with reference to the flowchart of FIG.

First, the test execution control unit 22 reads the terminal state of the mobile terminal 100 stored in the state storage unit 23 (step S31).

Next, the first determination unit 24b of the terminal state determination unit 24 determines whether or not the desired signal is detected by the UL detection unit 22b in step S14 (first determination step S32). The desired signal here is, for example, a UL signal including information such as PRACH including a paging response in a Mobility test, a UL signal including information such as SRS, PUCCH, and PUSCH in a connected state, an NSA (Non-Stand Alone ), which are not subject to the test, and the like. When the first determination unit 24b determines that the desired signal is detected by the UL detection unit 22b in step S14, the process of step S39 is executed. On the other hand, when the first determination unit 24b determines that the desired signal is not detected by the UL detection unit 22b in step S14, the process of step S33 is executed. Here, the undesired signal is a UL signal containing information such as SCGFailureInformation, 4G DETACH REQUEST, 5G DEREGISTRATION REQUEST, and PRACH that is not in the test procedure.

In step S33, the 0th judgment section 24a of the terminal state judgment section 24 judges whether or not the UL signal was detected by the UL detection section 22b in step S14. When the 0th determination unit 24a determines that the UL signal is detected by the UL detection unit 22b in step S14, the process of step S37 is executed. On the other hand, when the 0th determination unit 24a determines that the UL signal is not detected by the UL detection unit 22b in step S14, the process of step S34 is executed.

In step S34, the second determination unit 24c of the terminal state determination unit 24 determines whether or not the test for the test item started in step S14 has ended (second determination step S34). Since it is basically necessary to stop the transmission and reception of the mobile terminal 100 in the test termination procedure, the second determination unit 24c determines whether or not the test execution control unit 22 has performed control to stop the transmission and reception of the mobile terminal 100. Thus, it is determined whether or not the test for the test item whose execution was started in step S14 has been completed. When the second determination unit 24c determines that the test for the test item whose execution was started in step S14 has ended, the process of step S35 is performed. On the other hand, when the second determination unit 24c determines that the test for the test item whose execution was started in step S14 has not ended, the process of step S39 is executed.

In step S<b>35 , the DL control unit 22 a of the test execution control unit 22 controls transmission of a DL signal from the measuring device 10 for transmitting a UL signal from the mobile terminal 100 . Here, throughput measurement of the mobile terminal 100 and the like are performed. That is, the process of step S35 is a process of confirming whether or not the mobile terminal 100 responds to the DL signal.

Next, the first determination unit 24b of the terminal state determination unit 24 determines whether or not the desired signal is detected by the UL detection unit 22b in step S14 (first determination step S36). The desired signal here is, for example, a PRACH including a paging response during RRC_IDLE, a PRACH during cell reselection in the detach state, and a UL signal including information such as an RRC release response during RRC_CONNECTED. When the first determination unit 24b determines that the desired signal is detected by the UL detection unit 22b in step S14, the process of step S39 is executed. On the other hand, when the first determination unit 24b determines that the desired signal is not detected by the UL detection unit 22b in step S14, the process of step S37 is executed. Here, the reason why the desired signal is not detected may be, for example, that the battery of the mobile terminal 100 is dead, or that the coaxial cable connecting the mobile terminal 100 and the measuring device 10 is disconnected.

In step S<b>37 , the terminal state determination section 24 outputs to the test execution control section 22 a signal recommending re-execution of the test. As a result, in step S14, the test execution control unit 22 causes the measuring device 10 to re-execute the test of the test item being executed (including reproducibility confirmation).

Next, the test execution control unit 22 controls the display unit 31 to display that the test case is not being tested normally (display step S38).

In step S<b>39 , the test execution control unit 22 stores the current terminal state of the mobile terminal 100 in the state storage unit 23 .

As described above, the mobile terminal testing system 1 according to the present embodiment conforms to the 3GPP standard by determining whether or not the UL signal including information indicating the terminal state of the mobile terminal 100 is the desired signal. It is possible to detect whether or not the test of the test case is being performed normally. As a result, the mobile terminal testing system 1 according to the present embodiment can improve the reliability of test results while satisfying the conformance test requirements of the 3GPP standards.

In addition, the mobile terminal testing system 1 according to the present embodiment repeats the test during execution of the test case to the measuring device 10 when the UL signal including the information indicating the terminal state of the mobile terminal 100 is not the desired signal. It is designed to run. As a result, the mobile terminal testing system 1 according to the present embodiment can detect an abnormality in the terminal state of the mobile terminal 100 at an early stage, and re-execute a test that has a high possibility of being inappropriate.

Further, in the mobile terminal testing system 1 according to the present embodiment, when the number of test re-executions of a test case reaches a predetermined value, the re-execution of the test for which the number of re-executions has reached the predetermined value is stopped. ing. As a result, the mobile terminal testing system 1 according to the present embodiment skips tests for which test results that are likely to be inappropriate are continuously obtained, and performs other tests, thereby shortening the test time. be able to.

Further, the mobile terminal testing system 1 according to this embodiment transmits a DL signal for causing the mobile terminal 100 to transmit a UL signal when determining that the test of the test case has ended. As a result, the mobile terminal testing system 1 according to the present embodiment confirms whether or not the mobile terminal 100 is operating normally at the end of the test, thereby determining whether or not the obtained test results are appropriate. can judge.

1 mobile terminal test system 10 measuring device 20 control device 21 test case storage unit 22 test execution control unit 22a DL control unit 22b UL detection unit 24 terminal state determination unit 24a 0th determination unit 24b 1st determination unit 24c 2nd determination unit 25 Pass/fail judgment unit 30 operation unit 31 display unit 100 mobile terminal

Claims (6)

A mobile terminal test system (1) that executes one or more tests of test cases defined by the 3GPP standards on a mobile terminal (100),
A DL control unit (22a) for controlling transmission of a DL signal to the mobile terminal, and a UL detection unit (22b) for detecting a UL signal transmitted from the mobile terminal, and performing test measurement of the test case. a test execution control unit (22) that causes the measuring device (10) to execute;
a first determination unit (24b) for determining whether a desired signal is detected by the UL detection unit;
a second judging unit (24c) for judging whether or not the testing of the test cases has ended;
a display unit (31) for displaying that the test case test is not performed normally when the first determination unit determines that the desired signal is not detected by the UL detection unit; ,
The DL control unit performs control to transmit a DL signal for transmitting a UL signal from the mobile terminal when the second determination unit determines that the test of the test case is completed. Mobile terminal test system. The test execution control unit causes the measurement apparatus to re-execute the test in execution of the test case when the first determination unit determines that the desired signal is not detected by the UL detection unit. A mobile terminal testing system according to claim 1. 3. The test execution control unit according to claim 2, wherein when the number of re-executions of the test of the test case reaches a predetermined value, the test execution control unit stops re-executing the test for which the number of re-executions has reached a predetermined value. A mobile terminal test system as described. A mobile terminal testing method for executing one or more tests of test cases defined in the 3GPP standard for a mobile terminal (100),
including a DL control step of controlling transmission of a DL signal to the mobile terminal and a UL detection step of detecting a UL signal transmitted from the mobile terminal, and transmitting test measurements of the test case to a measuring device (10) a test execution control step (S14) to be executed;
a first judgment step (S32, S36) for judging whether or not the desired signal is detected by the UL detection step;
a second judgment step (S34) for judging whether or not the testing of the test case has been completed;
a display step (S38) of displaying that the test case test is not performed normally when the first determination step determines that the desired signal is not detected by the UL detection step; ,
The DL control step is characterized by performing control to transmit a DL signal for transmitting a UL signal from the mobile terminal when the second determination step determines that the test of the test case has ended. Mobile terminal test method. The test execution control step causes the measurement apparatus to re-execute the test in execution of the test case when the first determination step determines that the desired signal is not detected by the UL detection step. 5. The mobile terminal testing method according to claim 4 . 6. The test execution control step according to claim 5, wherein when the number of re-executions of the test of the test case reaches a predetermined value, the test execution control step stops re-execution of the test for which the number of re-executions has reached a predetermined value. Mobile terminal test method as described.

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