JP2009088790A - Device measuring apparatus for mobile terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily control a device to be measured and also easily change tentatively operation parameters or the like during execution of a control sequence. <P>SOLUTION: In the device measuring apparatus for mobile terminal, a controller 33 is provided with: a control sequence generating means 100 for generating a control sequence to repeatedly execute a series of control commands including a dummy command in order to measure a device to be measured; a control sequence executing means 101 for controlling a control signal generator 22 to output a control signal corresponding to the control sequence designated by a manipulator 31; and a desired command inserting means 102 for changing operating conditions of the device to be measured by inserting the designated control command, when the desired control command is designated, to a domain of the dummy command of the control sequence being executed. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a technique for easily measuring a device for a mobile terminal used in a mobile terminal such as a mobile phone or a PDA.

  Devices used for mobile terminals such as mobile phones and PDAs have been highly functional and integrated year by year. At present, as shown in FIG. 10, a switch for switching an antenna for transmission and reception and an amplifier for transmitting signals are amplified. A front end unit 11 configured by an amplifier and the like, and a frequency conversion that converts a baseband signal into a high-frequency signal and outputs the high-frequency signal to the front-end unit 11 and converts a reception signal output from the front-end unit 11 into a baseband signal Control unit 12, front end unit 11, and frequency conversion unit 12, and a transmission baseband signal including information such as voice and data is given to frequency conversion unit 12, and the baseband output from frequency conversion unit 12 It has a three-chip configuration with an application unit 13 that demodulates audio and data based on the signal.

  Here, the frequency conversion unit 12 is configured to be multiband or multimode so as to be compatible with a plurality of frequency bands (800 MHz, 2 GHz, 2.5 GHz, etc.) and communication systems (WCDMA, GSM, etc.) used by the mobile terminal. Has been.

  In the future, further integration and miniaturization will progress, and it is expected that the front end unit 11 and the frequency conversion unit 12 will be integrated to form a two-chip configuration.

  By the way, in the device development department as described above, it is necessary to measure the characteristics of the device under development while arbitrarily changing various parameters. For example, there are measurement items such as power (Pout), spurious, modulation error (EVM), adjacent channel leakage power (ACPR), and carrier leak for transmission, and gain, intermodulation (IM), baseband modulation for reception. There are items such as error (IQEVM).

  When performing various measurements on the devices as described above, the signal generator, spectrum analyzer, baseband signal generator, baseband signal demodulator, power supply, etc. required for measurement have been prepared in the past. The devices are manually operated, and each device is remotely controlled from an external computer.

  For example, Patent Document 1 is known as an apparatus dedicated for testing devices such as ICs.

JP-A-6-273488

  However, in the conventional device measuring apparatus that has been realized so far, there is no device that can easily and efficiently set the control of the device under measurement and its procedure, etc. Was very inconvenient.

  Also, when measuring characteristics while operating the device under measurement by repeating a predetermined control sequence, change the operating parameters of the device under measurement temporarily and how the output signal changes in response to the change. In such a case, the control sequence that is currently being executed must be stopped, the operation parameter must be changed to the desired value, and the measurement must be restarted. The same processing is necessary when returning to, and there is a problem that it is very difficult to use.

  The present invention solves this problem, and provides a device measuring apparatus for a portable terminal that can easily control a device under test and that can easily change an operation parameter or the like during execution of a control sequence. It is intended to provide.

In order to achieve the object, a device measuring apparatus for a portable terminal according to claim 1 of the present invention provides
A baseband signal generator (21) for generating a baseband data signal;
A control signal generator (22) for generating a control signal corresponding to the control command;
A transmission signal generator (23) that time-division-multiplexes the data signal and the control signal and supplies the data signal to the device under test for a mobile terminal;
An operation unit (31);
A device measuring apparatus for a mobile terminal having a control unit (33) for controlling the baseband signal generation unit, the control signal generation unit, and the transmission signal generation unit in response to an operation on the operation unit,
In the control unit,
In order to measure the device under test, a control sequence creating means (100) for creating a control sequence having a dummy command area for storing a dummy command and repeatedly executing a series of control commands including the dummy command. )When,
Control sequence execution means (101) for outputting a control signal corresponding to a control sequence designated by the operation unit from the control signal generation unit among the control sequences created by the control sequence creation unit;
When an arbitrary control command is specified by operation of the operation unit while the control sequence specified by the operation unit is being executed, the dummy command area of the control sequence executing the specified control command Arbitrary command insertion means (102) for changing the operating condition of the device under test is provided.

Moreover, the device measuring apparatus for portable terminals of Claim 2 of this invention is the device measuring apparatus for portable terminals of Claim 1,
A high-frequency signal analysis unit (24) for performing an analysis process on a high-frequency signal output from the device under measurement that has received the transmission signal;
The control command inserted in the dummy command area includes a trigger generation signal,
The transmission signal generation unit provides a trigger signal to the high-frequency signal analysis unit in accordance with a timing at which a control signal corresponding to the control command inserted in the dummy command region is output to the device under measurement, It is characterized in that a change in the operating condition of the device under measurement is notified by a control command inserted in the dummy command area.

  As described above, the device measuring apparatus for portable terminals of the present invention creates a control sequence composed of a series of control commands including dummy commands, and selects and designates the control sequence by operating the operation unit. Even a person who does not have knowledge can easily perform measurement on the device under measurement. Also, if an arbitrary control command is specified while the control sequence is being executed, the specified control command is inserted into the area containing the dummy command in the control sequence being executed. It is possible to easily change the operating condition of the device under measurement without stopping the operation, and to immediately know how the output signal of the device under measurement changes in response to the change.

  In addition, since the trigger generation signal can be included in the control command to be inserted into the dummy command area, the analysis process for the output signal of the device under measurement can be linked with the change of the operating condition of the device under measurement.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a configuration of a mobile terminal device measuring apparatus 20 (hereinafter simply referred to as a measuring apparatus 20) to which the present invention is applied.

  Here, it is assumed that the device under test 1 includes the above-described frequency converter 12 or the frequency converter 12 and the front end 11, and the baseband data signal and the control signal are time-division multiplexed. A transmission signal is received at the transmission signal input terminal 1a, and a data signal and a control signal are internally separated from the transmission signal, and a high-frequency signal (for example, 2.5 GHz, 3 GHz) that is orthogonally modulated with the data signal is generated. As a result, the signal is output from the high-frequency signal output terminal 1b and has a function of controlling internal operation parameters (gain, frequency, etc.) according to a control command included in the control signal. Here, only the measurement of the transmission function of the mobile terminal device 1 will be described.

  The measuring apparatus 20 includes a baseband signal generation unit 21, a control signal generation unit 22, a transmission signal generation unit 23, a high frequency signal analysis unit 24, a power supply unit 25, an operation unit 31, a display unit 32, and a control unit 33. These are integrated types accommodated in one housing (not shown). Although the case where the high-frequency signal analysis unit 24 is provided will be described here, the high-frequency signal analysis unit 24 may be configured by another device (for example, a spectrum analyzer).

  The baseband signal generator 21 generates a baseband data signal Sbb (for example, an IQ signal obtained by orthogonally transforming an analog audio signal) to be supplied to the device under test 1 for a mobile terminal, and transmits the signal. Input to the generation unit 23.

  The control signal generator 22 generates a control signal to be given to the device under measurement 1 and inputs the control signal to the transmission signal generator 23. For example, a control signal corresponding to a control command for controlling a local frequency, a gain, or the like that determines the transmission frequency of the device under measurement 1 is output under the control of the control unit 33.

The transmission signal generator 23 generates a transmission signal Stx by time-division multiplexing the data signal Sbb and the control signal, and supplies the transmission signal Stx to the transmission signal input terminal 1a of the device under measurement 1 via the output terminal 20a.
Here, in the case of the WCDMA system, the transmission signal Stx has a configuration of 15 slots per frame, and the data signal D (k) is stored in the data buffer in the device under test 1 in each slot. The control signal C (m) is inserted at intervals that do not become empty.

  The high-frequency signal analysis unit 24 is for performing an analysis process of the high-frequency signal Rrf output from the device under measurement 1, and the high-frequency signal Rrf output at a radio frequency from the high-frequency signal output terminal 1 b of the device under measurement 1. The signal is received at the input terminal 20b, and the spectrum analysis processing and the high frequency signal are demodulated to perform modulation analysis. Each high-frequency signal analysis unit 24 is connected to the control unit 33 through a bus. Various parameters necessary for the analysis processing are set by the control unit 33, and the analysis result is sent to the control unit 33.

  The power supply unit 25 generates power necessary for operating the device under measurement 1 and supplies the power to the power supply terminal 1c of the device under measurement 1 from the power output terminal 20c. The power supply unit 25 is also controlled by the control unit 33.

  The operation unit 31 includes a pointing device for selecting a button displayed on the screen of the display unit 32 with a cursor, such as a number of keys, a dial and a keyboard that can be connected externally, or a mouse. The operation is detected by the unit 33.

  The display unit 32 is a display (LCD, CRT) capable of displaying an image such as a waveform, and may be an externally connectable one in addition to the one provided integrally with the housing.

  The control unit 33 is configured by a computer including a ROM, a RAM, a CPU, an HDD, an interface, and the like. In accordance with the operation of the operation unit 31, the baseband signal generation unit 21, the control signal generation unit 22, and the transmission signal generation described above. The unit 23, the high-frequency signal analysis unit 24, and the power supply unit 25 are controlled to perform measurement on the device under measurement 1, and display the measurement result and the like on the display unit 32.

  Here, in addition to the normal measurement mode in which measurement is performed by manually setting the parameters necessary for the operation of each unit described above, the control unit 33 is for creating and registering an arbitrary control sequence for the device under measurement 1. The control sequence creation mode and the control sequence execution mode for executing the control sequence specified by the operation unit 31 among the created control sequences are provided. In FIG. The control sequence creation means 100 and the control sequence execution means 101 are shown as blocks.

  As shown in FIG. 3, for example, the control sequence creating means 100 is composed of control commands (for example, address data and setting data for determining the state of the part indicated by the address) that are uniquely defined for each device 1 to be measured. The control command storage means 100a stores the serial code) and its control command name in advance, stores the control sequence name of the control sequence realized by one or a plurality of control commands, and an arbitrary control sequence Control sequence storage means 100b for control, and a control command to be executed with an arbitrary control sequence name is arbitrarily selected from the control commands stored in the control command storage means 100a and registered in the control sequence storage means 100b. In order to edit the registered control sequence It has a control sequence registration editing means 100c.

  The control command storage means 100a and the control sequence storage means 100b are detachable memory units (card type, stick type, etc.) in addition to the readable / writable nonvolatile semiconductor memory and disk type storage element in the apparatus. May be.

  In addition to the control commands Ca01, Ca02,... Effective for controlling the device under measurement 1, the control sequence includes dummy commands that are recognized as invalid by the device under measurement 1, as shown in the list of FIG. Registration of Cd01 is possible. The dummy command Cd itself is invalid data (for example, no signal), and an area for inserting a command is substantially secured.

  In addition to the data of the command body, the dummy command area can include timing alignment data that defines the timing at which the command is set and a trigger generation signal.

  When an arbitrary control command is specified by the operation of the operation unit 31 while the control sequence specified by the operation unit 31 is being executed, the control unit 33 generates a signal for transmission. Arbitrary command insertion means 102 is provided which notifies the unit 23 and inserts it into the dummy command area of the control sequence being executed to change the operating condition of the device under test 1.

Next, operation | movement of this measuring apparatus 20 is demonstrated based on the flowchart of FIG.
When a control sequence for measuring the device under test 1 is prepared in advance and one of them is selected by operating the operation unit 31 (S1), the first control sequence in the specified control sequence together with the baseband data signal is selected. The control command is sent to the transmission signal generator 23 (S2), the data signal and the control signal corresponding to the control command are multiplexed and output to the device under test 1, and the control included in the multiplexed signal is transmitted. A high frequency signal modulated with a data signal is output in a state where parameters (for example, frequency, gain, etc.) in the device are set according to the command.

  The high-frequency signal is input to the high-frequency signal analysis unit 24 and analyzed (for example, output level), and the analysis result is stored in the control unit 33, for example.

  During this measurement, for example, as shown in FIG. 6, an arbitrary control command is inserted into the area of dummy commands Cd01 to Cd03 (here, a maximum of three examples are shown) defined in the control sequence being executed. Screen is displayed. Here, 200a to 200c are command input fields for inserting bit data of arbitrary control commands, and 200d is an execution button that can be operated by a mouse.

  Hereinafter, until the end operation is performed, the commands of the control sequence are sequentially read and executed (S3, S5), but any control command data is input to any of the command input fields 200a to 200c during that time. When the execution button 200d is operated in the state (S4), it is determined whether the next command in the control sequence is a normal control command or a dummy command (S6). Is sent out and executed (S7).

  If the next command is determined to be a dummy command in the determination in step S6, an arbitrary control command Cd designated in place of the dummy command is sent (S8), and a control corresponding to the control command Cd is sent. The signal Sc is inserted between the data signals D (k) and D (k + 1), for example, as shown in FIG.

  Here, the device under test 1 takes in the data signal Sca of the control command body included in the input control signal Sc into the internal buffer, and receives the control command at the timing when the data signal Scb specifying the command setting timing is received. Enable. Although the control signal Sc in FIG. 7 includes the trigger generation signal Trig, this indicates the timing, and the trigger generation signal Trig is actually sent to the high-frequency signal analysis unit 24.

  In this way, after an arbitrary control command is executed in place of the dummy command, the process returns to step S3, and a series of control commands in the original control sequence are sent until the end operation or the next execution button 200d is operated. Let it run repeatedly.

  Therefore, every time the execution button 200d is operated in a state where an arbitrary control command replacing the dummy command is specified, the arbitrary control command is inserted into the dummy command area and input to the device under test 1 and its operation. It is possible to change the operation parameter of the device under test 1 without stopping the control sequence because the parameter changes, and to easily grasp how the output signal changes in response to the change. Can do.

  As described above, the measurement apparatus 20 according to the embodiment has expertise only by creating a control sequence including a series of control commands including dummy commands, and selecting and specifying the control sequence by operating the operation unit 31. Even those who are not able to perform measurement on the device under measurement 1 can easily perform the measurement. Also, if an arbitrary control command is specified while the control sequence is being executed, the specified control command is inserted into the dummy command area in the control sequence being executed, so that the control sequence is not stopped. The operating conditions of the device under measurement 1 can be easily changed, and it is possible to immediately grasp how the output signal of the device under measurement 1 changes in response to the change.

  In addition, since the trigger generation signal can be included in the control command to be inserted into the dummy command area, the analysis process for the output signal of the device under measurement 1 can be linked with the change of the operating condition of the device under measurement 1. .

  In the above description, the dummy signal area for inserting the data signal Sca of the command body, the data signal Scb designating the command setting timing, and the trigger generation signal Trig is divided into two data signals D (k) and D (k + 1). However, this does not limit the present invention. As shown in FIG. 8, an insertion area for the data signal Sca is set between the data signals D (k) and D (k + 1). Even if the insertion region of the data signal Scb is set between the data signals D (k + 1) and D (k + 2), and the insertion region of the trigger generation signal Trig is set between the data signals D (k + 2) and D (k + 3). Good.

  Further, for example, when arbitrary different control commands are inserted in the area of two sets of dummy commands, in addition to the method of setting two sets of the insertion patterns in FIGS. 7 and 8 by shifting the time, as shown in FIG. Two types of command body data signals Sca1 and Sca2 are inserted between the signals D (k) and D (k + 1), and two commands are set between the data signals D (k + 1) and D (k + 2). An insertion area for the common data signal Scb and the trigger generation signal Trig may be set.

The figure which shows the whole structure of embodiment of this invention. A diagram showing an example of a frame structure of a transmission signal The figure which shows the structural example of the principal part of embodiment. Figure showing an example of a control sequence creation screen Flowchart for explaining the operation of the embodiment A figure showing an example of a screen for inserting an arbitrary control command Diagram showing an example of dummy command setting pattern Diagram showing an example of dummy command setting pattern Diagram showing an example of dummy command setting pattern The figure which shows the structure of the device for portable terminals

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Device to be measured, 20 ... Device measuring device for portable terminals, 21 ... Baseband signal generator, 22 ... Control signal generator, 23 ... Transmission signal generator, 24 ... High frequency signal analyzer , 25... Power supply section, 31... Operation section, 32... Display section, 33... Control section, 100... Control sequence creation means, 100 a. ... Control sequence registration / editing means, 101 ... Control sequence execution means, 102 ... Arbitrary command insertion means

Claims (2)

A baseband signal generator (21) for generating a baseband data signal;
A control signal generator (22) for generating a control signal corresponding to the control command;
A transmission signal generator (23) that time-division-multiplexes the data signal and the control signal and supplies the data signal to the device under test for a mobile terminal;
An operation unit (31);
A device measuring apparatus for a mobile terminal having a control unit (33) for controlling the baseband signal generation unit, the control signal generation unit, and the transmission signal generation unit in response to an operation on the operation unit,
In the control unit,
In order to measure the device under test, a control sequence creating means (100) for creating a control sequence having a dummy command area for storing a dummy command and repeatedly executing a series of control commands including the dummy command. )When,
Control sequence execution means (101) for outputting a control signal corresponding to a control sequence designated by the operation unit from the control signal generation unit among the control sequences created by the control sequence creation unit;
When an arbitrary control command is specified by operation of the operation unit while the control sequence specified by the operation unit is being executed, the dummy command area of the control sequence executing the specified control command An arbitrary command insertion means (102) is provided for inserting the device into the device and changing the operating condition of the device under measurement. A high-frequency signal analysis unit (24) for performing an analysis process on a high-frequency signal output from the device under measurement that has received the transmission signal;
The control command inserted in the dummy command area includes a trigger generation signal,
The transmission signal generation unit provides a trigger signal to the high-frequency signal analysis unit in accordance with a timing at which a control signal corresponding to the control command inserted in the dummy command region is output to the device under measurement, 2. The device measuring apparatus for a portable terminal according to claim 1, wherein a change in operating condition of the device under measurement is notified by a control command inserted in the dummy command area.

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