TECHNICAL FIELD

The present invention relates to a mobile terminal testing system for testing a mobile terminal, a mobile terminal testing device, and a control method for the mobile terminal testing system.

BACKGROUND ART

In a case of developing the mobile terminal performing communication while moving a mobile phone or a data mobile terminal, it is necessary to test whether or not the developed mobile terminal can normally perform communication. Therefore, a testing device which operates as a pseudo base station simulating a function of an actual base station is connected to a mobile terminal to be tested, communication is performed between the testing device and the mobile terminal, and a test of checking the contents of the communication is performed.

In the mobile communication system, the standard specification of 5G NR (New Radio), which is a 5th Generation (5G) radio system, has been completed.

In 5G NR, 5G lines are specialized for User plane (U-Plane): User data signal. For Control Plane (C-Plane): communication control signal, the specifications of Non-Standalone (NSA) that transmits and receives signals using a Long Term Evolution (LTE) line, and Stand Alone (SA) that operates independently by 5G NR without linking with LTE are defined.

Patent Document 1 describes handover in NSA and SA communication systems.

When testing a mobile terminal that supports NSA, it is possible to perform testing by using a mobile terminal testing device that supports LTE testing and a mobile terminal testing device that supports 5G NR testing, in cooperation with each other.

When performing such a test, each device is designed to generate a control signal corresponding to each communication method. Therefore, according to the NSA specification, a 5G NR control signal is to be transmitted to a mobile terminal by an LTE mobile terminal testing device.

Japanese Patent Application No. 2018-219107 has proposed that when a 5G NR control signal is transmitted to a mobile terminal, a first mobile terminal testing device operating as a 5G NR base station generates a 5G NR control signal, transmits the generated control signal to a second mobile terminal testing device operating as an LTE base station, and the second mobile terminal testing device transmits the received control signal to the mobile terminal by an LTE control signal, thereby reducing the processing load on the second mobile terminal testing device.

RELATED ART DOCUMENT

Patent Document

[Patent Document 1] WO 2017/062244

DISCLOSURE OF THE INVENTION

Problem that the Invention is to Solve

When a mobile terminal testing device performs testing, it is necessary to set a plurality of parameters for each mobile terminal testing device of the LTE mobile terminal testing device and the 5G NR mobile terminal testing device. Control such as setting of parameters for each mobile terminal testing device can be executed by using a personal computer or the like.

However, when performing a test using two mobile terminal testing devices, an LTE mobile terminal testing device and a 5G NR mobile terminal testing device, it is more efficient to control the two mobile terminal testing devices in parallel.

Therefore, an object of the present invention is to provide a mobile terminal testing system, a mobile terminal testing device, and a control method for a mobile terminal testing system, which are capable of controlling mobile terminal testing devices that support different communication standards in parallel.

Means for Solving the Problem

A mobile terminal testing system according to the present invention is a mobile terminal testing system including: a first mobile terminal testing device (1) that supports a first communication standard (LTE) of mobile communication; a second mobile terminal testing device (2) that supports a second communication standard (5G NR) of the mobile communication; and a test control device (5) that controls the first mobile terminal testing device and the second mobile terminal testing device, the mobile terminal testing system testing a mobile terminal (3) that supports the first communication standard and the second communication standard, in which the test control device includes a command input unit (31) to which a control command for controlling the first mobile terminal testing device and the second mobile terminal testing device is input, a command transmission determination unit (32) that determines either the first mobile terminal testing device or the second mobile terminal testing device as a transmission destination of the control command, and a command transmission unit (33) that transmits the control command to the transmission destination determined by the command transmission determination unit, and the command transmission determination unit determines the transmission destination of the control command, according to a type of the control command.

With this configuration, the mobile terminal testing system according to the present invention determines either the first mobile terminal testing device or the second mobile terminal testing device, as the transmission destination of the control command according to the type of control command, so that it is possible to control mobile terminal testing devices that support different communication standards in parallel.

In the mobile terminal testing system according to the present invention, as the control command, a device designation command for designating either the first mobile terminal testing device or the second mobile terminal testing device may be input to the command input unit, and the command transmission determination unit may determine a mobile terminal testing device designated by the device designation command as the transmission destination of the control command, after the device designation command is input to the command input unit.

With this configuration, since the mobile terminal testing system of the present invention determines the transmission destination of the control command, according to the device designation command, it is possible to control the mobile terminal testing devices that support different communication standards in parallel.

Further, in the mobile terminal testing system according to the present invention, the control command input to the command input unit may designate either the first mobile terminal testing device or the second mobile terminal testing device, and even after the device designation command is input to the command input unit, when a mobile terminal testing device is designated in the control command, the command transmission determination unit may determine the mobile terminal testing device designated in the control command as the transmission destination of the control command.

With this configuration, since the mobile terminal testing system of the present invention determines the transmission destination of the control command as the mobile terminal testing device designated in the control command, it is possible to control the mobile terminal testing devices that support different communication standards in parallel.

Further, in the mobile terminal testing system according to the present invention, the test control device may have a command storage unit (34) that stores the control command input to the command input unit in advance in association with a communication standard, and when the control command which is input to the command input unit is stored in the command storage unit, the command transmission determination unit may determine the mobile terminal testing device that supports the communication standard associated with the control command stored in the command storage unit, as the transmission destination of the control command.

With this configuration, since the mobile terminal testing system of the present invention determines the transmission destination of the control command, according to the communication standard of the control command, it is possible to control the mobile terminal testing devices that support different communication standards in parallel.

A mobile terminal testing device according to the present invention is a mobile terminal testing device including: a first mobile terminal testing unit (1) that supports a first communication standard (LTE) of mobile communication; a second mobile terminal testing unit (2) that supports a second communication standard (5G NR) of the mobile communication; and a test control unit (5) that controls the first mobile terminal testing unit and the second mobile terminal testing unit, the mobile terminal testing device testing a mobile terminal (3) that supports the first communication standard and the second communication standard, wherein the test control unit includes a command input unit (31) to which a control command for controlling the first mobile terminal testing unit and the second mobile terminal testing unit is input, a command transmission determination unit (32) that determines either the first mobile terminal testing unit or the second mobile terminal testing unit as a transmission destination of the control command, and a command transmission unit (33) that transmits the control command to the transmission destination determined by the command transmission determination unit, and the command transmission determination unit determines a transmission destination of the control command, according to a type of the control command.

With this configuration, the mobile terminal testing device of the present invention determines either the first mobile terminal testing unit or the second mobile terminal testing unit, as the transmission destination of the control command, according to the type of control command, so that it is possible to control mobile terminal testing units that support different communication standards in parallel.

A control method for a mobile terminal testing system according to the present invention is a control method for a mobile terminal testing system which includes a first mobile terminal testing device (1) that supports a first communication standard (LTE) of mobile communication, a second mobile terminal testing device (2) that supports a second communication standard (5G NR) for the mobile communication, and a test control device that controls the first mobile terminal testing device and the second mobile terminal testing device, and tests a mobile terminal (3) that supports the first communication standard and the second communication standard, the control method causing the test control device to execute: a command transmission determination step of determining either the first mobile terminal testing device or the second mobile terminal testing device as a transmission destination of the control command which is input to control the first mobile terminal testing device and the second mobile terminal testing device; and a command transmission step of transmitting the control command to the transmission destination determined in the command transmission determination step, in which in the command transmission determination step, the transmission destination of the control command is determined according to a type of the control command.

As described above, in the control method for the mobile terminal testing system of the present invention, either the first mobile terminal testing device or the second mobile terminal testing device is determined as the transmission destination of the control command, according to the type of control command, so that it is possible to control mobile terminal testing devices that support different communication standards in parallel.

Advantage of the Invention

The present invention can provide a mobile terminal testing system, a mobile terminal testing device, and a control method for a mobile terminal testing system, which are capable of controlling mobile terminal testing devices that support different communication standards in parallel.

