JP5489230B2 - Mobile phone, wireless environment degradation notification method for mobile phone, and program - Google Patents

Description

  The present invention relates to a mobile phone capable of notifying a user of deterioration of a wireless environment, a wireless environment deterioration notification method in a mobile phone, and a program.

  As a method for notifying a user of deterioration of a wireless environment in a mobile phone, a method for displaying the number of antennas on a display screen of a mobile phone is generally known. However, the display of the number of antennas alone cannot notify the wireless environment degradation that occurs instantaneously or transiently. Therefore, if the voice from the other party is temporarily interrupted during line switching communication such as voice or videophone, or if abnormal sound or silence occurs temporarily, the user is responsible for the cause of the wireless environment. It is impossible to determine whether it is due to deterioration of the mobile phone or due to a mobile phone failure. For this reason, users often bring them to mobile phone stores thinking that the cause of the interruption of the call is due to a failure of the mobile phone. Furthermore, when checking the operation of a mobile phone at a mobile phone retailer, the cause of the failure can be determined relatively easily if it is caused by a malfunction such as a speaker or microphone. If the communication system circuit such as the baseband LSI that causes the failure is the cause of the failure, it is difficult to determine the cause, and as a result, there is a possibility that useless repairs may be performed even if there is no problem in the communication circuit.

  Therefore, if audio disturbance occurs due to the deterioration of the wireless environment of the mobile phone, if the user can clearly inform the user that the deterioration of the wireless environment is the cause, bring it to the mobile phone store unnecessarily. In addition, it is possible to prevent the mobile phone store from performing unnecessary repairs. However, at present, a technology for accurately notifying the user of the deterioration of the wireless environment (that is, the reception environment) in the mobile phone has not been developed.

  As a related technique, a technique is disclosed in which a user perceives a change in reception environment by controlling the volume of the reception apparatus according to the magnitude of the electric field intensity detected by the reception apparatus such as a mobile phone. (For example, refer to Patent Document 1). According to this technique, the loudspeaker volume of the receiving device is controlled in proportion to the electric field intensity received by the receiving device, so that the user can determine whether the steady received radio wave environment is good or bad.

  As another related technique, the amount of voice data received by the telephone device within a certain period of time is calculated, and if the shortage of voice data exceeds a preset threshold, it is determined that the communication quality of the network has deteriorated. Thus, a technique for notifying the user of this fact is disclosed (for example, see Patent Document 2). According to this technique, the user can perceive the deterioration of the average communication quality within a certain time. In other words, the user can know the average degradation of the wireless environment.

  Furthermore, as another related technique, a technique related to a radio base station radio wave evaluation method that eliminates a fading phenomenon in which a radio wave level fluctuates due to radio wave wavelength interference is disclosed (see, for example, Patent Document 3). According to this technique, in the radio base station, the test data subjected to the reverse encoding process is evaluated by the evaluation device by performing the reverse encoding process on the received baseband signal without performing error correction. As a result, the radio base station evaluates that there is a failure in the reception system when an error is detected in the received test data, and evaluates that the radio environment is degraded if the received test data is normal. Therefore, it is possible to easily know the deterioration of the radio environment in the radio base station.

JP 2004-304477 A JP 2007-235637 A JP 2005-269071 A

  However, with the method of displaying the number of antennas on a mobile phone and notifying the deterioration of the wireless environment, when line-switching communication such as voice or videophone is temporarily interrupted, or when an abnormal or silent state occurs, It is impossible to accurately notify the user that the cause is due to deterioration of the wireless environment of the mobile phone. Further, in the techniques of Patent Document 1 and Patent Document 2, although it is possible to notify the user of the deterioration of the received radio wave environment (wireless environment) that occurs regularly in the mobile phone, the deterioration of the wireless environment that occurs transiently You cannot be notified about. Furthermore, in the technique of Patent Document 3, it is possible to accurately detect the deterioration of the radio environment in the radio base station, but this technique can be used as it is to apply the technique for determining the deterioration of the radio environment in the mobile phone. Is difficult.

  The present invention has been made in view of the circumstances as described above, and when the circuit-switched communication is temporarily interrupted or an abnormal sound state or silent state occurs, the cause is due to deterioration of the wireless environment. It is an object of the present invention to provide a mobile phone capable of accurately notifying a user of this and a wireless environment deterioration notification method in the mobile phone.

  The present invention has been made in order to solve the above-described problem. Data detecting means for detecting whether or not received user data is interrupted, and the cause of the interruption of user data detected by the data detecting means is data demodulation. A determination unit that determines whether or not the data demodulating unit performs a failure, and the determination unit determines that the data demodulating unit has not failed. And a notifying means for notifying that the wireless environment is deteriorated.

  According to the present invention, the first step of detecting the presence or absence of interruption of the received user data and the cause of the interruption of the user data detected by the data detection means are due to a failure of the data demodulation means for demodulating data. A second step of determining whether or not the data demodulating means is not broken by the determining means, and that the cause of the interruption of the circuit-switched communication is that the wireless environment is deteriorated. And a third step of notifying.

  The present invention also provides a data detection means for detecting whether or not the received user data is interrupted by the CPU of the mobile phone, and a data demodulating means for demodulating the data caused by the interruption of the user data detected by the data detection means. Determining means for determining whether or not it is due to a failure. When the determining means determines that the data demodulating means has not failed, the cause of the interruption of circuit-switched communication is the deterioration of the wireless environment. It is a program for functioning as a notification means for notifying.

  According to the present invention, it is possible to check whether or not the user data of the mobile phone is interrupted one by one, and it is possible to automatically check the failure state in the mobile phone, which is caused by deterioration of the wireless environment. This can be clearly notified to the user. In addition, since it is possible to notify the user that the interruption of the user data is caused by a failure of the mobile phone, it is possible to prevent the user from requesting the mobile phone store to repair a mobile phone having no abnormality.

It is a block diagram which shows the structure and the operation | movement concept of the mobile telephone system which concern on one Embodiment of this invention. It is explanatory drawing which shows the method in which the mobile telephone shown in FIG. 1 detects the interruption of circuit switching communication. FIG. 2 is an explanatory diagram showing a method for confirming that there is no abnormality in the baseband LSI of the mobile phone shown in FIG. 1. It is explanatory drawing which shows the method to notify a user of deterioration of the radio | wireless environment of a mobile telephone. It is a block diagram which shows the structure of the mobile telephone for implement | achieving this invention. It is a flowchart which shows the flow of a process of the mobile telephone shown in FIG.

  The mobile phone according to the present invention determines whether or not there is any abnormality in the baseband LSI that performs communication protocol processing when the circuit-switched communication such as voice or videophone is interrupted, or when an abnormal sound state or silent state occurs. By making a self-diagnosis and clarifying that there is no abnormality on the mobile phone side, it is configured to accurately notify the user that the wireless environment is the cause. Hereinafter, some embodiments of a mobile phone according to the present invention will be described in detail with reference to the drawings.

<< First Embodiment >>
First, the outline | summary of the mobile telephone system which concerns on embodiment of this invention is demonstrated.
FIG. 1 is a block diagram showing a configuration and an operation concept of a mobile phone system according to an embodiment of the present invention.
As shown in FIG. 1, in the mobile phone system according to the present embodiment, the mobile phone 1 receives a radio wave transmitted from the base station 2 via the relay station 3 and switches the line such as voice or video phone. It is configured to communicate.

  At this time, when the wireless environment of the circuit switching communication system from the base station 2 to the mobile phone 1 is deteriorated and the call is interrupted, the interruption of the call due to the deterioration of the wireless environment is detected inside the mobile phone 1. As a result, the mobile phone 1 determines that the cause of the interruption of the call is due to the deterioration of the wireless environment, and “Sound is interrupted due to the deterioration of the wireless environment. Is displayed. In this way, the user is informed that the sound interruption of the mobile phone 1 is caused by the deterioration of the wireless environment.

  Next, a description will be given of a method for detecting the interruption of the circuit-switched communication caused by the deterioration of the wireless environment in the mobile phone 1. FIG. 2 is an explanatory diagram showing a method for detecting the interruption of circuit-switched communication by the mobile phone 1 shown in FIG. There are two methods for detecting the interruption of user data. As shown in FIG. 2A, when a serial number (1, 2,...) Is added to a series of data, a missing number is detected. As shown in FIG. 2B, there are a method and a method of detecting that user data has not been received for a certain time when a serial number is not added.

  That is, as shown in FIG. 2A, serial numbers (1, 2,...) Are added to the user data divided along the time flow, and the mobile phone 1 sequentially detects each serial number. Go. At this time, for example, when the mobile phone 1 detects that the user data of serial number 3 is missing, the mobile phone 1 determines that the user data has been interrupted, and the circuit-switched communication is interrupted. A message indicating that the wireless environment is deteriorated is displayed on the display unit.

  Further, as shown in FIG. 2B, when the serial number is not added to the user data divided along the time flow, the mobile phone 1 continuously transmits the user data along the time flow. I will detect it. At this time, if the mobile phone 1 does not detect reception of user data for a certain period of time, the mobile phone 1 determines that the user data has been interrupted, and the circuit-switched communication is interrupted in the wireless environment. The display unit displays that it is due to the deterioration of.

  In this way, the mobile phone 1 confirms that the serial number is missing when the serial number is added, and has not received user data for a certain period of time when the serial number is not added. Confirmation is made to detect the interruption of the user data and notify that the interruption of the circuit-switched communication is due to deterioration of the wireless environment.

  FIG. 3 is an explanatory diagram showing a method for confirming that there is no abnormality in the baseband LSI of the mobile phone 1 shown in FIG. As shown in FIG. 3, the CPU (not shown) of the mobile phone 1 checks baseband (BB) check data D3a stored in the internal memory in advance in order to confirm whether or not the baseband LSI 12 has an abnormality. Are output to the baseband LSI 12. At this time, the CPU bases the post-modulation BB check data D2 obtained by modulating the BB check data D3a into the same modulation format as the pre-demodulation user data D1 received by the baseband LSI 12 from the radio unit 11. Output to the band LSI 12.

  That is, the baseband LSI 12 receives the user data D1 from the wireless unit 11, and outputs demodulated user data to the CPU (step S1). Further, the CPU modulates the BB check data D3a, converts the data into the format of the modulated BB check data D2 (step S2), and outputs the data to the baseband LSI 12 (step S3). Next, the baseband LSI 12 demodulates the modulated BB check data D2 from the CPU and transmits the demodulated BB check data D3b to the CPU (step S4). Then, the CPU extracts the demodulated BB check data D3b from the baseband LSI 12 (step S5), compares the extracted demodulated BB check data D3b with the original BB check data D3a (step S6), and extracts it. It is confirmed that there is no abnormality in the baseband LSI 12 by determining whether or not there is any change or omission in the post-demodulation BB check data D3b.

  As a result, when user data D1 (that is, voice data, videophone data, etc.) from the baseband LSI 12 to the CPU is interrupted, the demodulated BB check data D3b and the original BB check data D3a are compared with each other. The validity of the check data can be confirmed. In this way, by confirming that there is no problem with the baseband LSI 12, it is determined whether or not the cause of the interruption of the circuit switching communication is in the wireless environment.

In addition, the failure of the part other than the baseband LSI 12 has the following characteristics.
(1) If an analog circuit such as a microphone or a speaker is faulty, the abnormal state is easily visible to the user.
(2) Since the communication itself is not performed if the radio unit 11 is faulty, the abnormal state is easily visible to the user.
(3) If the failure is around the CPU, an abnormal state occurs even in use other than communication, and the abnormal state is easily visible to the user.

  Therefore, by clarifying that there is no abnormality in the baseband LSI 12 that is difficult to see for the user, it becomes clear that the mobile phone itself is not malfunctioning. You can be notified.

  Next, a method for notifying the user that the interruption of circuit-switched communication is caused by deterioration of the wireless environment will be described. FIG. 4 is an explanatory diagram showing a method for notifying the user of the deterioration of the wireless environment of the mobile phone 1. If it is determined that the interruption of the circuit-switched communication is due to the deterioration of the wireless environment, the CPU 13 causes the LCD 14 to display information indicating that “the sound is interrupted due to the deterioration of the wireless environment”. A warning sound (for example, a beep sound) is output through the speaker 15 to inform the user that the wireless environment has been deteriorated.

  The outline of the mobile phone system according to the embodiment of the present invention has been described above. Here, the configuration and operation of the mobile phone according to the embodiment of the present invention will be described. FIG. 5 is a block diagram showing a configuration of the mobile phone 1 for realizing the present invention. The cellular phone 1 includes a wireless unit 11 that wirelessly receives user data, a baseband LSI 12 that demodulates data before demodulation received from the wireless unit 11, a CPU 13 that performs various processes of the cellular phone 1, and various types of data to the user. The LCD 14 and the speaker 15 (output circuit) for performing the notification are provided. Here, it is assumed that the mobile phone 1 has a circuit and a function capable of transmitting the first BB check data D2 before demodulation from the CPU 13 to the baseband LSI 12.

  Next, the operation of the mobile phone 1 shown in FIG. 5 will be described. FIG. 6 is a flowchart showing a process flow of the mobile phone 1 shown in FIG. In FIG. 6, first, the CPU 13 always detects a circuit-switched communication state indicating whether or not the user data D1 is interrupted (step S11). Then, the CPU 13 determines whether or not the interruption of the user data D1 has occurred (step S12). If the interruption of the user data D1 has not occurred, the CPU 13 returns to step S11 until the communication is completed and repeats the monitoring process. .

  On the other hand, if interruption of the user data D1 occurs in step S12, the CPU 13 confirms the validity of the BB check data D2. That is, as shown in FIG. 3, the data demodulated by the baseband LSI 12 (demodulated BB check data D3b) and the data before modulation (BB check data D3a stored in the internal memory in advance) are compared. Then, it is determined whether or not both match (step S13).

  Here, when the CPU 13 determines that there is a problem in the validity between the two data, or when the data is not demodulated and transmitted to the CPU due to an abnormality of the baseband LSI 12 (NO in step S13). Therefore, it is determined that the baseband LSI 12 or higher is reached, and the processing flow is ended. On the other hand, if the CPU 13 determines that there is no problem in the validity between the two data in the determination in step S13 (YES in step S13), voice interruption or the like occurs due to deterioration of the wireless environment for the user. Is notified via the LCD 14 and the speaker 15 (step S14).

  The data detection means, check data modulation means, data comparison means, and determination means described in the claims are realized by the CPU 13 executing a predetermined program, and the data demodulation means is realized by the baseband LSI 12. The notification means is realized by an output circuit such as the LCD 14 or the speaker 15.

<< Other Embodiments >>
Next, a mobile phone according to another embodiment of the present invention will be described.
First, as a first application example of the method for confirming that there is no abnormality in the baseband LSI 12 shown in FIG. 3, it is possible to use test software that repeatedly supplies the BB check data D3a. For example, when performing an operation check test of the baseband LSI 12 in a mobile phone device development stage or a mobile phone operation check in a mobile phone store, a special test device is used by using the test software. Thus, it is possible to carry out a confirmation test for the presence or absence of an abnormality in the demodulation function in the baseband LSI 12 without the need for the above.

  Further, as a second application example of the method for confirming that there is no abnormality in the baseband LSI 12 shown in FIG. 3, the CPU 13 outputs the BB check data D3a before modulation to the baseband LSI 12, and the BB check data. For example, D3a may be modulated. Thereby, the CPU 13 can also check the modulation function portion of the baseband LSI 12.

  Further, as the third application example, by combining the second application example and the first application example described above, it is possible to test both the modulation / demodulation functions of the baseband LSI 12. Specifically, the CPU 13 outputs the BB check data D2 to the baseband LSI 12 by outputting the BB check data D3a to the baseband LSI 12 in step S2 described in the first embodiment. Then, by performing the processing after step S3 using the post-modulation BB check data D2, it is possible to test both the modulation and demodulation functions of the baseband LSI 12.

  As an application example of the method for confirming that there is no abnormality in the baseband LSI 12 shown in FIG. 3, in the case of a mobile phone (or mobile terminal) having a plurality of baseband LSIs, each baseband LSI is individually provided. By providing a circuit for transmitting data before demodulation and providing the CPU 13 with the function, the CPU 13 can perform a check or a test for each baseband LSI.

  As described above, some of the embodiments of the mobile phone according to the present invention have been described in detail with reference to the drawings. However, the specific configuration of the present invention is not limited to these embodiments, and the gist of the present invention. Even if there is a design change or the like within a range that does not deviate from the above, they are included in the present invention.

  The above-described operation of the CPU 13 is stored in a computer-readable recording medium in the form of a program, and the CPU 13 reads out and executes this program, whereby the above processing is performed. Here, the computer-readable recording medium means a magnetic disk, a magneto-optical disk, a CD-ROM, a DVD-ROM, a semiconductor memory, or the like. Alternatively, the computer program may be distributed to the computer via a communication line, and the computer that has received the distribution may execute the program.

  The program may be for realizing a part of the functions described above. Furthermore, what can implement | achieve the function mentioned above in combination with the program already recorded on the computer system, what is called a difference file (difference program) may be sufficient.

1 Mobile phone 2 Base station 3 Relay station 11 Radio unit 12 Baseband LSI
13 CPU
14 LCD
15 Speaker D1 User data D2 Data for baseband (BB) check after modulation D3a Data for baseband (BB) check D3b Data for baseband (BB) check after demodulation

Claims (10)

Data detecting means for detecting whether or not the received user data is interrupted;
Determining means for determining whether the cause of the interruption of user data detected by the data detecting means is due to a failure of the data demodulating means for demodulating data;
And a notifying means for notifying that the cause of the interruption of the circuit-switched communication is the deterioration of the radio environment when the determining means determines that the data demodulating means is not out of order. phone.   The data detecting means detects an interruption of the user data when a serial number of the received user data is lost or when the user data cannot be received for a predetermined time. The mobile phone according to claim 1. Data modulator for check that modulates predetermined baseband check data and outputs the modulated baseband check data to the demodulator;
Data comparison means for comparing the baseband check data demodulated by the data demodulation means with the baseband check data before the check data modulation means modulates;
With
The determining means determines whether the data demodulating means is out of order using the comparison result of the comparing means when the data detecting means detects the interruption of the received user data. The mobile phone according to claim 1 or 2.   In the comparison result of the comparison means, the notifying means interrupts circuit-switched communication due to deterioration of the radio environment when the predetermined baseband check data matches the baseband check data demodulated by the data demodulation means. The mobile phone according to claim 3, wherein the mobile phone is notified of the occurrence of the problem. 5. The mobile phone according to claim 3, wherein the check data modulation unit repeatedly supplies the baseband check data to the data demodulation unit and continuously demodulates the baseband check data. 6. phone. The data demodulating means has a modulation function for modulating data,
6. The check data modulating unit modulates the base band check data by outputting base band check data before modulation to the data demodulating unit. The mobile phone described in the section. A plurality of the data demodulation means,
4. The check data modulation unit individually demodulates the baseband check data by supplying the modulated baseband check data for each of the plurality of data demodulation units. 7. The mobile phone according to any one of 6. 2. A baseband LSI that executes processing of the data demodulating means, a CPU that executes processing of the data detecting means and the determining means, and an output circuit that executes processing of the notifying means. 8. The mobile phone according to any one of items 7. A first step of detecting whether or not the received user data is interrupted;
A second step of determining whether the cause of the interruption of the user data detected by the data detection means is due to a failure of the data demodulation means for demodulating data;
A third step of notifying that the cause of the interruption of the circuit-switched communication is the deterioration of the radio environment when the determining means determines that the data demodulating means has not failed. Notification method for deterioration of wireless environment in mobile phone. CPU of the mobile phone
Data detection means for detecting whether or not the received user data is interrupted;
Determining means for determining whether or not the cause of the interruption of user data detected by the data detecting means is due to a failure of the data demodulating means for demodulating data;
A program for causing a function to function as notifying means for notifying that the cause of interruption of circuit-switched communication is deterioration of a wireless environment when the determining means determines that the data demodulating means is not broken.

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