JP2002290342A - Speech quality measurement device for mobile phone - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device that can produce measurement data with speech quality by which a cause to call interruption can easily be analyzed. SOLUTION: The speech quality measurement device that measures speech quality data obtained by a mobile phone PH making a call in combination with data from a positioning system GPS, comprises a speech state measurement device MS, memories M 1-4, a timer, an electric field strength measurement device and a control means CPU. The 1st memory M1 stores a speech state at any time, the 2nd memory M2 stores a setting value to a call timer continuing calling at a required setting value, the call interruption timer starts calling after a lapse of a setting value, the memory M3 stores the setting value, the 4th memory M4 stores positioning data at any time, the electric field strength measurement device measuring the electric field strength and generating data and the 5th memory M5 storing the data conduct calling operation control for the mobile phone within a range of the setting data stored in the memories M2, M3, and the speech quality measurement device measures various data such as positioning data stored in the memory M4 and the electric field strength data stored in the memory M5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for measuring various data related to speech quality using a portable telephone as a measurement probe.

[0002]

2. Description of the Related Art In order to optimize the call quality of a mobile phone service, it is necessary to measure the call quality in order to grasp the call quality. The mobile phone is used as a measurement probe to measure and record the electric field strength, the bit error rate, the color code, the radio frequency, and the like in association with the position information, the time information, and the like.

The electric field strength and bit error rate are periodically reported to the base station. The electric field strength is used by the base station as an index for frequency switching control, and the bit error rate is demodulated. The error rate is measured based on the synchronization signal in the signal. The color code is used to prevent interference by scrambling a signal transmitted from a base station in 256 patterns. Further, the radio frequency is a frequency used for communication, and includes a control channel and a communication channel.

[0004] When a call is disconnected, that is, when a call is interrupted due to the fact that the mobile phone is approaching a low power range during a telephone call, even if a call is made immediately, the call fails if the electric field strength is low. This is because control is not performed in consideration of the time for channel scanning of the mobile phone. Although mobile phones are standardized and have the same operation content, the channel scan time is not always the same.

When the call is ended by pressing the call end button of the portable telephone, the base station specifies the frequency to be used next time. On the other hand, in the case of a call disconnection, that is, an unexpected call disconnection, the mobile phone must scan the frequency to determine a frequency to be used.

[0006]

When the calling operation is unsuccessful, it is necessary to make the channel scan time longer or the like to make it easier to find the used frequency. If the channel scan time is short, it is recorded as a call failure even if there is a certain frequency of the electric field strength. As a result, unlike the actual situation, there are many defective areas.

Further, in order to analyze a series of results after the measurement, when the electric field strength information is associated with the calling failure point,
In the low-power area, there are a number of call disconnection and call failure points, and it becomes difficult to analyze the cause of the call disconnection.

The present invention has been made in view of the above points, and has as its object to provide an apparatus capable of forming communication quality measurement data so that the cause of a call disconnection can be easily analyzed.

[0009]

In order to achieve the above object, according to the present invention, call quality data obtained by calling a mobile phone in accordance with a predetermined program is converted into a call quality data including positioning data from a positioning system. A call quality measuring device for a mobile phone adapted to measure call quality in combination with data, wherein a call status measuring device for measuring a call status of the mobile phone and a first device for storing the call status data of the mobile phone as needed. And a second timer which has a predetermined set value, stores a call timer for starting the call operation of the portable telephone when the time of the set value has elapsed, and stores set value data of the call timer. A timer for measuring a call disconnection time of the mobile phone based on the set value, and a set value data of the call disconnection timer. Memory, a fourth memory for storing the positioning data as needed, an electric field intensity measuring device for measuring electric field intensity received by the mobile phone and generating electric field intensity data, and an electric field intensity information measurement device. A fifth memory for storing the electric field intensity data from the device and a call state data from the first memory are transmitted to the portable telephone within a time range based on the set value data from the second memory. Control means for performing a call operation and, when a call disconnection occurs, performing a call operation after a lapse of time according to the set value data from the third memory;
The present invention provides a communication quality measuring device for a portable telephone characterized by measuring various data including positioning data by the memory of (5) and electric field strength data by the fifth memory.

[0010]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention. In FIG. 1, PH denotes a mobile phone, which is connected to a measurement device MS, and both of them are mounted on a vehicle, for example, and perform measurements while moving within a service area.

The measuring device MS includes an asynchronous communication interface SIO with the mobile phone PH, centering on the CPU.
ROM storing a program, positioning system GPS,
A first memory M1 for storing call state data, a second memory M2 for storing a set value of a calling timer, a third memory M3 for storing a set value of a call disconnection timer, and a fourth memory M3 for storing positioning data. It has a memory M4, a fifth memory M5 for storing electric field strength, and an interface I / O inserted between the input terminal IN and the output terminal OUT.

FIGS. 2 and 3 show a control procedure of a portable telephone system including a base station in the portable telephone PH and the measuring device MS shown in FIG. FIG. 2 shows a case where the connection control operation is performed normally (FIG.
(A)) and an abnormal case (FIG. 2 (b)).

That is, in the case of FIG.
Makes a call to the mobile phone PH and issues (DIAL information + call command), and as a result, the mobile phone PH
And a call is made. Then, the mobile phone P
H provides the busy signal to the measuring device MS, so that the measuring device MS receives the busy signal.

Next, in the case of FIG. 2B, for example, when the measuring device MS is out of service area or busy, the calling process is performed by the measuring device MS to the portable telephone PH and (DIAL information + call command) is issued. , The mobile phone PH is not connected to the base station B and the measuring device MS
Report "busy" to.

FIG. 3 shows the contents of the cutting control operation in FIG.
FIG. 3B shows the details of the call disconnection operation. Then, in the case of FIG. 3 (a), when the measurement device MS sends an end signal to the mobile phone PH, the mobile phone PH
Performs the call end operation, and then displays the OFF display during the call by the measuring device M.
S, which is received by the measuring device MS. FIG.
In the case of (b), when the call between the mobile phone PH and the base station B is interrupted, a signal indicating that the mobile phone PH is off during the call is sent from the mobile phone PH to the measuring device MS, and the measuring device MS receives the signal. .

FIG. 4 is an explanatory diagram showing a state transition of the automatic calling function performed by the measuring apparatus MS shown in FIG. In the automatic calling function, the measuring device MS adopts three operation states of disconnection, calling, and talking.

First, in order to start the measurement by turning on the power of the measuring apparatus, the interface I is set in step S001.
/ O initialization and the asynchronous communication interface SIO initialization. Next, in step S002, a call timer, a call disconnection timer, and a call state flag are initialized. Here, the calling timer is a timer for setting a time for performing a calling operation to the mobile phone PH, and the call disconnection timer is a timer for managing a lapse of time from a call disconnection to a call.

Then, the flow shifts to step S003, where it is determined whether or not "measurement start" has been performed, for example, by checking the state of a specific switch in the measurement apparatus. If measurement has started, the mobile phone is turned on in step S004. To start the measurement, and proceed to step S005, wait for 10 seconds and “cut”
State. The measurement is performed during these 10 seconds.

When the measurement is stopped in the "disconnected" state due to, for example, a command from a switch operation, step S006 is performed.
To send a call termination command to the mobile phone, and
Shift to 07. Then, after waiting for 10 seconds, the power of the mobile phone is turned off in step S008, and preparations are made for the start of the next measurement in step S003.

On the other hand, the calling operation starts from the "disconnected" state. It is conditioned on the timeout of the disconnect timer.
Then, in step S011, it is confirmed that the electric field strength is equal to or more than a predetermined value, in this case, 10 dBuV, and the process proceeds to step S012 to send a call command to the mobile phone.
The sending time of the calling command is determined by the setting time of the calling timer. In step S013, the calling timer is activated with the set time of 30 seconds, and the calling command is sent during that time. Next, in step S014, the call state flag is set to "1" indicating that a call is being made, and the state shifts to the "calling" state.

In the "calling" state, after a call is made, "waiting for a call (that is, a call is made and a call has been established with the other party)" from the portable telephone is waited. Resend the "call" command. For this purpose, the system waits for a timeout of the calling timer, and on condition of this timeout, similarly to steps S011 to S013, confirms in step S021 that the electric field strength is 10 dBuV or more, and in step S022, issues a calling command to the mobile phone. In step S023, a calling timer is activated in 30 seconds.

From the "calling" state, the state basically shifts to the "talking" state. If the state cannot be shifted to the "talking" state, the state shifts to the "disconnected" state.

[0023] The case where the transfer cannot be performed during a call is "busy".
Are received, when "measurement is stopped", and when "communication is OFF". First, when busy, step S
In step S031, a call termination command is sent to the mobile phone, and the flow advances to step S032 to set the calling timer to 0 seconds. Then, in step S033, the state flag is changed to "0" in the disconnected state, and the flow shifts to step S034 to activate the call disconnection timer in 30 seconds and shift to the "disconnected" state.

Next, when "measurement stopped", step S0
At step S04, a call end command is sent to the mobile phone, and the flow shifts to step S042.
Step 3 turns off the power of the mobile phone. Then, in step S044, it is determined whether or not “measurement start” is performed, and in step S045, the power of the mobile phone is turned on to start measurement. In step S046, the apparatus waits for 10 seconds to perform the channel scan, and enters a “cut” state.

When "OFF during call" is received, the call state flag is changed to "0" in the call disconnection state in step S051, and the flow shifts to step S052 to send an end command to the portable telephone. Then, in step S053, the disconnection timer is started with 15 seconds, and the disconnection state is set.

On the other hand, in order to shift to the "talking" state, when "talking" is received, in step S061, the talking state flag is changed to "0" of the talking state, and then the "talking" state is set. Transition. Then, it waits for "OFF during call" from the mobile phone.

In this "calling" state, "calling O"
FF "is received, the call state flag is changed to" 0 "in the call disconnection state in step S071, and then the process proceeds to step S071.
At 72, an end command is sent to the mobile phone. And
The process proceeds to step S073, in which the call disconnection timer is activated in 15 seconds, and enters a "disconnected" state.

If "measurement stop" is not "OFF during communication", a termination command is sent to the mobile phone in step S081, and after waiting 10 seconds in step S082,
The process shifts to step S083 to turn off the power of the mobile phone. Then, the flow shifts to step S084, and waits for the start of measurement if not "measurement start". If "measurement start", the flow shifts to step S085 to turn on the power of the mobile phone and start measurement. Then, after waiting for 10 seconds for the channel scan in step S086, the state is changed to the “disconnected” state.

Data obtained as a result of the measurement during the state transition is created as a file for each measurement area, for example, and stored in a medium such as a hard disk. This data will be used later to analyze call quality.

FIGS. 5 to 8 are flowcharts showing the operation contents of the embodiment of the present invention, and are exploded into four figures for convenience of illustration.

In FIG. 5, when the power is turned on, the memory is initialized in step S11, the interface I / O is initialized in step S12, and the asynchronous communication interface SIO is initialized in step S13.
Next, after the interrupt setting is performed in step S14, the process proceeds to step S16 after a time of waiting for 400 mS until being stabilized in step S15.

In step S16, measurement switch information is read. This is "1,0" information. If the measurement switch indicates that the measurement is being performed, the power of the mobile phone is turned on in step S18, and the process proceeds to step S19, and waits for 10 seconds until the mobile phone is stabilized. Then, after the elapse of 10 seconds, the flow shifts to step S31 (FIG. 6).

Next, in FIG. 6, in step S31,
It is determined whether or not a GPS signal has been received, and if so, the process proceeds to step S51 shown in FIG. On the other hand, if it is in a state of waiting without receiving a GPS signal, the process shifts to step S32 to determine whether a signal of the mobile phone has been received. At this time, if the mobile phone signal has not been received yet, the process returns to step S31.

On the other hand, if a signal from the mobile phone has been received, the flow shifts to step S33 to read out the received data from the mobile phone, and shifts to step S34. Step S
If the received data indicates that the call is in progress at step S34, the flow shifts to step S35 to set the call status flag to "call in progress", ie, disconnection =
“0”, call state = “1”, and busy = “2” in “2” are set, and the process returns to step S31.

On the other hand, if it is not "in a call", the flow shifts to step S36 to determine whether the received data is OFF or not in a call. If the call is OFF during the call, the process proceeds to step S37 to send a call end command to the mobile phone. After the call status flag is changed to “0” in step S38, the process proceeds to step S39 and the call disconnection timer is set to “15”. The operation is started after setting to seconds, and the process returns to step S31.

On the other hand, if it is determined in step S36 that the received data is not OFF during a call, the process proceeds to step S40 to determine whether the received data is "busy". If it is "busy", the flow shifts to step S41 to send an end command to the mobile phone, and shifts to step S42 to change the call status flag to "0". Then, the process proceeds to step S43 to reset the calling timer to 0 seconds, and then sets and activates the disconnection timer to 30 seconds in step S44.

Further, if the received data is not "busy" in the determination in step S40, it is determined in step S45 whether or not the received data is the electric field intensity. If so, the electric field intensity information is stored in the memory in step S46. Otherwise, the process returns to step S31.

As described above, if the result of determination in step S 31 is that a GPS signal has been received, step S in FIG.
The process proceeds to 51, where the location information is read from the GPS. The process proceeds to step S52, where the location information is stored in the memory, and then the process proceeds to step S53, where the call state flag is read from the memory.

Then, as a result of the determination in step S54,
If the call state flag is “disconnected”, step S55
Reads the value of the call interruption timer from the memory. If the read value indicates a timeout, step S5
7 to perform a calling operation. The calling operation will be described later with reference to FIG. On the other hand, if the value of the disconnection timer is being activated, the value of the disconnection timer is decremented every second in step S58. Move to

The call interruption timer is a timer for managing the lapse of time from OFF during a call to calling. Therefore, the timer is started on the condition of “during call off”. And
The timer value is set to 15 or 30 seconds by receiving the down signal "busy" or "busy OFF" from the mobile phone, and is decremented every 1 second. ) To move to the next process.

When the timer value is set in response to "OFF during call", it means that the other party hangs up the telephone. Wait for about 15 seconds (experimental value).

When the timer is started in response to "busy (call is not established with the other party when making a call (other party is talking)"), if the telephone is in a weak electricity area or the other party of the phone is "busy" Or the case where the telephone line is insufficient. In this case, a call termination command is sent to the mobile phone, and the processing of the telephone is completed, and the telephone waits for a lapse of time (about 30 seconds in total) for capturing a stable electric field.

In step S60, the call state flag is read from the memory, and the flow shifts to step S61 to check whether the call state flag is "2" during the call. If the call is in progress, the process proceeds to step S67. If not, the value of the calling timer is read from the memory in step S62. Then, in step S63, it is determined whether or not a call timeout has occurred with respect to the read value, and the timer is being started (>
If it is 0), the value of the calling timer is subtracted with the lapse of time in step S64, and the value of the calling timer is written in the memory in step S65, and the process proceeds to step S67. If the result of determination in step S63 is that the timer has timed out, the flow shifts to step S66 to perform a calling operation, and shifts to step S67.

The "calling timer" is set in the "calling" process. The subtraction timer times out (stops) at 0. This timer is used to resend a "call" signal when communication between the mobile phone and the device is abnormal. if,
If "busy" is received while sending the "call" signal,
The timer is reset (0). If the mobile phone is not connected to the measuring device, every 30 seconds elapse,
A signal is sent.

In a step S67, it is read whether or not the measurement switch indicates that the measurement is being performed, and the process shifts to a determination in the step S68. If the measurement is being performed, the process proceeds to step S32 shown in FIG. 6. If the measurement is not being performed and the operation is stopped, the process proceeds to step S69 to issue an end command to the mobile phone, and then proceeds to step S70. Then, after waiting for 10 seconds until the operation of the mobile phone is stabilized, the process proceeds to step S71 to turn off the power of the mobile phone, and proceeds to step S72 to read the information “1, 0” of the measurement switch, and to execute step S73.
When the measurement is not being performed, the circulating operation with step S72 is repeated to wait for the measurement to be performed, and when the measurement is being performed, the process proceeds to step S18 in FIG.

FIG. 8 is a flowchart showing the calling operation shown in steps S57 and S66 in FIG. Since both have the same contents, step S57 will be described as a representative of both.

When the calling operation is started, the electric field strength information is read from the memory in step S571, and the flow shifts to step S572 to determine whether or not the electric field strength is 10 dBuV or more. If the electric field strength is equal to or greater than 10 dBuV, the flow shifts to step S573 to set the calling timer to 30 seconds, and shifts to step S574. In step S574, a calling command is transmitted to the mobile phone, and the flow advances to step S575 to set the call state flag in the memory to the call state (= "1").
To the next step in the main flow (S60
Alternatively, the process proceeds to S67).

Data obtained as a result of the measurement during the operation shown in the flowchart is created as a file for each measurement area, for example, and stored in a medium such as a hard disk. Then, it is used for analysis of the call quality later.

(Modification) In the above-described embodiment, a configuration is shown in which five memories are used to measure five values including a call state as a memory. However, as a measuring device, other elements are used as reference data. In some cases, it is better to do so, and it may be configured to have 6 or more or 4 or less memories.

[0050]

According to the present invention, as described above, a report of the electric field strength is received from the portable telephone, and the electric field strength is equal to or greater than a predetermined value, and the calling operation is performed with sufficient time. That is, a communication state using an appropriate communication channel can be obtained by a so-called channel scan. Therefore, it is possible to measure the call state according to the call state of the mobile phone.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a configuration of one embodiment of the present invention.

FIG. 2 shows a control operation of a mobile phone by a measuring device according to the present invention. FIG. 2 (a) shows a normal connection operation.
FIG. 2B is an explanatory diagram showing an abnormal connection operation.

3A and 3B are explanatory diagrams showing a control operation of a mobile phone by a measuring device according to the present invention, wherein FIG. 3A shows a disconnection control operation, and FIG. 2B shows a call disconnection operation.

FIG. 4 is an explanatory diagram showing a state transition of an automatic calling function by the measuring device according to the present invention.

FIG. 5 is a flowchart showing a part of the operation contents of the automatic calling function.

FIG. 6 is a flowchart showing a part of the operation contents of the automatic calling function.

FIG. 7 is a flowchart showing a part of the operation contents of the automatic calling function.

FIG. 8 is a flowchart showing a part of the operation content of the automatic calling function.

[Explanation of symbols]

 PH mobile phone MS call state measuring device GPS positioning system SIO mobile phone interface I / O interface ROM program memory M1 to M5 memory

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yuichi Matsui 1-10-19 Egawa, Koto-ku, Tokyo Inside TOKER CELLULAR Tokyo Tokyo Operation Center (72) Inventor Naoki Honda Kanaya, Kanagawa Prefecture 1-1-7 F-term in Cell Design Research Institute (reference) 5K014 AA05 EA00 FA14 GA01 HA00 5K042 AA06 CA13 DA19 EA03 EA14 FA08 FA11 FA15 JA01 5K067 AA25 BB04 FF16 GG07 HH23 JJ37 KK15 LL08

Claims (6)

[Claims] 1. A mobile phone configured to measure call quality by combining call quality data obtained by calling a mobile phone according to a predetermined program with required data including positioning data from a positioning system. A telephone call quality measuring device, comprising: a telephone call state measuring device that measures a telephone call state of the mobile telephone; a first memory that stores telephone call state data of the mobile telephone as needed; and a predetermined set value; A call timer for causing the mobile phone to start a call operation when the time of the set value has elapsed; a second memory for storing set value data of the call timer; and a predetermined set value; A disconnection timer for measuring a disconnection time of the mobile phone based on the set value; a third memory for storing set value data of the disconnection timer; A fourth memory for storing the electric field intensity received by the mobile phone at any time, an electric field intensity measuring device for generating electric field intensity data, and a fifth memory for storing the electric field intensity data from the electric field intensity information measuring device Based on the call state data from the first memory, causing the mobile phone to perform a calling operation within a time range based on the set value data from the second memory, and Control means for making a call operation after a lapse of time according to the set value data from the third memory; various data including positioning data from the fourth memory and electric field strength data from the fifth memory A call quality measuring device for a mobile phone, characterized in that the communication quality is measured. 2. The communication quality measuring apparatus for a mobile phone according to claim 1, wherein said control means causes a call operation to be performed when said measurement switch is turned on. 3. The communication quality measuring device for a mobile phone according to claim 1, wherein said control means causes a call operation to be performed when the electric field strength stored in said fifth memory is equal to or higher than a predetermined value. Quality measurement device for mobile phones. 4. A communication quality measuring device for a mobile phone according to claim 1, wherein said control means causes a call operation to be performed in response to an interrupt signal from said positioning system. . 5. The communication quality measuring apparatus for a mobile phone according to claim 1, wherein said control means instructs said mobile phone to end the communication when the received data indicates a call off, and sets a set value of said call disconnection timer. A mobile phone call quality measurement device that is set to be shorter. 6. The communication quality measuring apparatus for a mobile phone according to claim 1, wherein said control means instructs said mobile phone to end the communication when the received data indicates that the telephone is busy, and changes the set value of said calling timer. A mobile phone call quality measuring device that is set to be longer.