Patent ID: 12261648

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, a mobile terminal test device according to an embodiment of the present invention will be described in detail with reference to the drawings.

InFIG.1, a mobile terminal test device1according to the embodiment of the present invention is configured to include a first slot2, a second slot3, a display unit4, an operation unit5, and a control unit6.

The first slot2transmits and receives radio frequency (RF) signals to and from a mobile terminal under test. In the first slot2, the RF signal received from the mobile terminal is measured, or a set RF signal is generated and transmitted to the mobile terminal.

The first slot2is configured to include a first port21a, a second port21b, a selection unit22, a transmission and reception unit23, and a simulated base station unit26.

The first port21aand the second port21bare connected to the mobile terminal by cables or the like, and output an RF signal to the mobile terminal and receive an RF signal input from the mobile terminal.

The selection unit22connects the first port21aand the second port21bof the first slot2, and a first port31aand a second port31bof the second slot3to the transmission and reception unit23.

The transmission and reception unit23transmits and receives an RF signal to and from the mobile terminal. The transmission and reception unit23outputs an RF signal received from the mobile terminal to the simulated base station unit26and transmits an RF signal generated by the simulated base station unit26to the mobile terminal. The transmission and reception unit23measures the RF signal received from the mobile terminal. The transmission and reception unit23outputs, to the control unit6, information on a measurement result of the RF signal received from the mobile terminal.

The transmission and reception unit23is configured to include a first analysis unit24a, a second analysis unit24b, a first hardware control unit25a, and a second hardware control unit25b.

The first analysis unit24aand the second analysis unit24banalyze the RF signal received by the port selected and connected by the selection unit22. The first analysis unit24aand the second analysis unit24bcan analyze RF signals for both LTE and NR.

The first hardware control unit25aand the second hardware control unit25bcontrol hardware such as the transmission and reception unit23and the selection unit22.

The first hardware control unit25aand the second hardware control unit25b, for example, control the selection unit22to set a connection destination of each port.

Under the control of the control unit6, the simulated base station unit26transmits and receives an RF signal to and from the mobile terminal via the transmission and reception unit23. The simulated base station unit26controls communication with the mobile terminal based on a command input from the control unit6. The simulated base station unit26outputs the state of the communication with the mobile terminal and the like to the control unit6.

The simulated base station unit26can control an LTE RF signal, an NR RF signal, and an NSA RF signal.

The second slot3includes the first port31aand the second port31band connects the first port31aand the second port31bto the selection unit22.

The first port31aand the second port31bare connected to the mobile terminal by cables or the like, and output an RF signal to the mobile terminal and receive an RF signal input from the mobile terminal.

The first slot2and the second slot3are configured, for example, as illustrated inFIG.2. InFIG.2, the first port21aand the second port21bof the first slot2are configured as ports for inputting and outputting LTE RF signals. The first port31aand the second port31bof the second slot3are configured as ports for inputting and outputting NR RF signals.

InFIG.1, the display unit4is configured by an image display device such as a liquid crystal display, and displays an image for inputting necessary information, an image indicating a state during a test, and the like.

The operation unit5is configured by an input device such as a keyboard, a mouse, and a touch panel, and outputs information and the like input by an operation to the control unit6.

In accordance with an instruction input to the operation unit5, the control unit6causes the display unit4to display a test scenario creation screen to input information required for generating the test scenario, or to generate the test scenario based on the information input to the operation unit5on the test scenario creation screen. In accordance with an instruction input to the operation unit5, the control unit6transmits the instruction to the simulated base station unit26to perform a test based on the test scenario stored in a storage device or to display the state or the like during the test on the display unit4based on information on the state of communication with the mobile terminal, which is transmitted from the simulated base station unit26, and the like.

Here, the mobile terminal test device1is configured by a computer device (not illustrated) provided with a communication module for communicating with the mobile terminal. The computer device includes a central processing unit (CPU), a read only memory (ROM), a random access memory (RAM), a hard disk device, an input and output port, and a touch panel (not illustrated).

A program for causing the computer device to function as the mobile terminal test device1is stored in the ROM and the hard disk device of the computer device. That is, the computer device functions as the mobile terminal test device1by the CPU executing the program stored in the ROM by using the RAM as a work area.

In the present embodiment, the selection unit22connects the first port21aof the first slot2and the first port31aof the second slot3to the first analysis unit24ain the transmission and reception unit23in a normal state, for example. The selection unit22also connects the second port21bof the first slot2and the second port31bof the second slot3to the second analysis unit24bin the transmission and reception unit23.

Since the frequency characteristics of the first analysis unit24aand the second analysis unit24bdiffer depending on the ports to which the first analysis unit24aand the second analysis unit24bare connected, the received signals are corrected by using a correction value for each port.

The first analysis unit24astores the correction values for the first port21aof the first slot2and the first port31aof the second slot3, for example. The second analysis unit24bstores the correction values for the second port21bof the first slot2and the second port31bof the second slot3.

When the first analysis unit24ais connected to the second port21bof the first slot2or the second port31bof the second slot3, the first analysis unit24aacquires the correction value from the second analysis unit24band corrects the received signal.

When the second analysis unit24bis connected to the first port21aof the first slot2or the first port31aof the second slot3, the second analysis unit24bacquires the correction value from the first analysis unit24aand corrects the received signal.

As described above, since the transmission and reception unit23includes two analysis units being the first analysis unit24aand the second analysis unit24b, it is possible to analyze the RF signal from the two ports, that is, the first port21aand the second port21bof the first slot2and the first port31aand the second port31bof the second slot3.

For example, when multi-input multi-out (MIMO) in an NR uplink is measured, the first port31aand the second port31bof the second slot3are respectively connected to the first analysis unit24aand the second analysis unit24b, and RF signals input to the first port31aand the second port31bare measured.

At this time, it is not possible to measure RF signals input to the first port21aand the second port21bof the first slot2.

Therefore, the control unit6sets a measurement target when creating a test scenario for setting information on the simulated base station and the test content. The control unit6performs control based on the set measurement target, so that it is not possible to perform measurement setting for a measurement target of which it is not possible to simultaneously perform measurement. Here, the measurement target here is a measurement item of the test scenario stored in the storage device.

For example, when measurement of MIMO in an NR uplink is set, the control unit6causes the LTE measurement setting not to be performed by not displaying an interface for setting the LTE measurement setting or displaying the interface in a grayed-out manner.

As described above, in the above-described embodiment, the control unit6performs control so that it is not possible to perform measurement setting for a measurement target of which it is not possible to simultaneously perform measurement, based on the set measurement target.

As a result, it is possible to prevent an occurrence of a situation in which measurement setting is not made for a measurement target of which it is not possible to simultaneously perform measurement, and it is not possible to measure the measurement target due to a setting error, and thus it is possible to perform a test with high efficiency.

In addition, the control unit6performs control so that it is not possible to perform measurement setting for a measurement target of which it is not possible to simultaneously perform measurement, based on the number of first analysis units24aand the second analysis units24brequired for measuring the set measurement target.

As a result, based on the number of analysis units required for measuring the set measurement target, it is possible to prevent an occurrence of a situation in which measurement setting is not made for a measurement target of which it is not possible to simultaneously perform measurement due to insufficiency in the number of analysis units required for measurement, and it is not possible to measure the measurement target due to a setting error. Thus, it is possible to perform a test with high efficiency.

In the present embodiment, an example of an integrated mobile terminal test device has been described. The present invention is not limited to this. For example, the functions of the control unit6may be realized by a program operating on a personal computer, and the personal computer may control the first slot2, the second slot3, and the like.

Hitherto, the embodiment of the present invention has been disclosed, but it is clear that changes can be made by those skilled in the art without departing from the scope of the present invention. All such modifications and equivalents are intended to be included in the claims as follows.

DESCRIPTION OF REFERENCE NUMERALS AND SIGNS

1MOBILE TERMINAL TEST DEVICE2FIRST SLOT3SECOND SLOT6CONTROL UNIT21aFIRST PORT (PORT)21bSECOND PORT (PORT)22SELECTION UNIT23TRANSMISSION AND RECEPTION UNIT24aFIRST ANALYSIS UNIT (ANALYSIS UNIT)24bSECOND ANALYSIS UNIT (ANALYSIS UNIT)31aFIRST PORT (PORT)31bSECOND PORT (PORT)