JP6559510B2 - Communication terminal, communication terminal control method, and control program - Google Patents

Description

  The present invention relates to a communication terminal including a communication unit that performs wireless communication and an operation unit that operates at a set clock frequency.

  It is known that a communication terminal including various devices in addition to a communication unit that performs wireless communication, such as a mobile phone, causes a communication failure due to interference of a clock signal for operating the device with a frequency used for wireless communication. Therefore, techniques for avoiding such obstacles have been developed. For example, Patent Document 1 below discloses a technique for adjusting the clock signal frequency of a CPU (Central Processing Unit) so that mutual interference with a communication channel does not occur when a communication channel is designated by a base station. Has been.

JP 7-303079 A (published November 14, 1995)

  The technique of Patent Document 1 described above is not assumed to be applied to a communication terminal that can appropriately switch between a plurality of different communication services. Therefore, when the technique of Patent Document 1 is simply applied to such a communication terminal that supports multiple communication services, when the communication service to be used is switched, the communication terminal is appropriately changed without changing the clock frequency of the device. There is a problem that does not work.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a communication terminal or the like that operates properly even when a certain wireless communication service is switched to another wireless communication service.

  In order to solve the above-described problem, a communication terminal according to an aspect of the present invention is a communication terminal including a communication unit that performs wireless communication and an operation unit that operates at a set clock frequency. An identification information acquisition unit that acquires a plurality of carrier identification information that identifies a specific communication carrier used for specific wireless communication via the communication unit, each of which is a plurality of carrier identification information; An operation clock setting unit that operates the operation unit at a specific clock frequency among a plurality of clock frequencies, and when a predetermined condition is satisfied, the clock frequency of the operation unit is set to the predetermined frequency among the plurality of clock frequencies. An operation clock switching unit that switches to any one of the clock frequencies according to a condition, and wireless communication performed through the communication unit when the predetermined condition is satisfied, It is characterized by comprising a radio communication switching unit to switch to any of the wireless communication according to the predetermined condition in the communication.

  According to an aspect of the present invention, there is an effect that a communication terminal can be appropriately operated even when a certain wireless communication service is switched to another wireless communication service.

It is a block diagram which shows an example of a principal part structure of the communication terminal which concerns on Embodiment 1 of this invention. It is a figure which shows an example of the corresponding | compatible frequency information which concerns on Embodiment 1 of this invention. It is a flowchart which shows an example of the process performed at the time of starting of the communication terminal which concerns on Embodiment 1 of this invention. It is a flowchart which shows the flow of the change process to the clock frequency which is performed by the communication terminal which concerns on Embodiment 1 of this invention, and does not interfere with a 1st communication service. It is a flowchart which shows the flow of the change process to the clock frequency which is performed by the communication terminal which concerns on Embodiment 1 of this invention, and does not interfere with the 2nd communication service. It is a block diagram which shows an example of the principal part structure of the communication terminal which concerns on Embodiment 2 of this invention. It is a flowchart which shows an example of the process performed at the time of starting of the communication terminal which concerns on Embodiment 2 of this invention. It is a block diagram which shows an example of the principal part structure of the communication terminal which concerns on Embodiment 3 of this invention. It is a flowchart which shows an example of the process performed at the time of starting of the communication terminal which concerns on Embodiment 3 of this invention.

Embodiment 1
Embodiment 1 of the present invention will be described in detail with reference to FIGS.

[Configuration of communication terminal]
FIG. 1 is a block diagram showing an example of a main configuration of a communication terminal 1 according to Embodiment 1 of the present invention. As illustrated, the communication terminal 1 includes a control unit 10, a storage unit 20, a first SIM card 31, a second SIM card 32, a reference clock generation unit 40, a wireless communication unit (communication unit) 50, and an operation unit. 60. In the figure, the first SIM card 31 and the second SIM card 32 are described in the same manner as other blocks that are components of the communication terminal 1, but strictly speaking, the communication terminal 1 includes a plurality of unillustrated communication terminals 1. SIM card slots, and the first SIM card 31 and the second SIM card 32 are respectively installed in any one of the slots.

  The communication terminal 1 is a terminal device having a wireless communication function. In the present embodiment, the communication terminal 1 can switch and use different first and second communication services (first and second wireless communications) as appropriate. When a predetermined condition is satisfied when using the first communication service, the communication terminal 1 switches the communication service to be used to the second communication service. The first communication service is, for example, a voice communication service, and the second communication service is, for example, a data communication service, but is not limited thereto. The communication terminal 1 only needs to have a function of performing wireless communication with another device (server or the like) via the base station of the first communication carrier or the base station of the second communication carrier. Or a device such as a smartphone.

  The control unit 10 controls and controls each unit of the communication terminal 1, and includes an identification information acquisition unit 11, a frequency identification unit 12, an operation clock setting unit 13 (operation clock switching unit), a communication quality measurement unit 14, and A wireless control unit 15 (wireless communication switching unit, location registration unit) is included.

  The identification information acquisition unit 11 acquires the country code and the communication carrier code recorded in the first SIM card 31 or the second SIM card 32 and outputs them to the frequency specifying unit 12.

  The frequency specifying unit 12 specifies a clock frequency for operating the operating unit 60. Specifically, when the communication terminal 1 is activated, the frequency specifying unit 12 specifies the initial value of the clock frequency included in the corresponding frequency information 22 as the clock frequency for operating the operating unit 60. Further, when the country code and the carrier code are output from the identification information acquisition unit 11, the frequency specifying unit 12 refers to the corresponding frequency information 22, and outputs a clock corresponding to the output country code and the carrier code. Specify the frequency. Then, the frequency specifying unit 12 outputs the clock frequency specified as described above to the operation clock setting unit 13.

  The operation clock setting unit 13 operates the operation unit 60 at a specific frequency, and one operation clock setting unit 13 is provided for one operation unit 60. That is, when a plurality of operation units 60 are provided, the operation clock setting unit 13 is provided for each of them. Specifically, the operation clock setting unit 13 receives the reference clock signal generated by the reference clock generation unit 40 as an input, generates an input clock that is a specific clock signal, and inputs the input clock to the operation unit 60. The operation unit 60 generates an operation clock obtained by multiplying the input clock by an operation clock generation unit (not shown), and operates using this operation clock. When a plurality of operation units 60 operate at the same clock frequency, one operation clock setting unit 13 may be provided for the plurality of operation units 60.

  The wireless control unit 15 registers the location of the communication terminal 1 in the base station of the first communication carrier or the base station of the second communication carrier. With this location registration, the communication terminal 1 can wirelessly communicate with other devices via the wireless communication unit 50.

  The storage unit 20 stores various data handled by the communication terminal 1. In the illustrated example, the country / business operator identification information 21 and the corresponding frequency information 22 are stored in the storage unit 20. Note that the storage unit 20 may be a recording medium (recording apparatus) that is detachable from the communication terminal 1. The country / operator identification information 21 is information (operator identification information) indicating the country in which the communication terminal 1 performs wireless communication and the communication carrier used for wireless communication. Corresponding frequency information 22 is information indicating a clock frequency corresponding to each communication carrier.

  The first SIM card 31 and the second SIM card 32 are recording media on which various information necessary for the communication terminal 1 to perform wireless communication via the wireless communication unit 50 is recorded. The first SIM card 31 stores a predetermined country code and a carrier code for using the first communication service. This country code is first country identification information for identifying the country in which the first communication service is provided, and this communication carrier code is the first communication provider that provides the first communication service. Is first telecommunications carrier information for identifying. The second SIM card 32 stores a predetermined country code and a carrier code for using the second communication service. This country code is second country identification information for identifying the country in which the second communication service is provided, and this communication carrier code is the second communication provider that provides the second communication service. Is carrier information for identifying the network.

  The reference clock generation unit 40 generates a reference clock signal that serves as a reference for the clock signal that operates the operation unit 60, and outputs the reference clock signal to the control unit 10.

  The wireless communication unit 50 is for the communication terminal 1 to wirelessly communicate with other devices, and performs various processes related to transmission / reception of radio frequency signals. The wireless communication unit 50 accesses the base station of the first communication carrier or the base station of the second communication carrier via an antenna (not shown) before starting wireless communication with another device. The location of the communication terminal 1 is registered. Thereby, it becomes possible to perform wireless communication with other devices via the base station of the first communication carrier or the base station of the second communication carrier according to the current position of the communication terminal 1.

  The operation unit 60 operates according to the control of the control unit 10. In the illustrated example, one operating unit 60 is shown, but as described above, the number of operating units 60 is not particularly limited. The operation unit 60 may be any device (device) that operates at a set clock frequency, and may be, for example, an LCD (Liquid Crystal Display) or a camera.

[Example of supported frequency information]
Hereinafter, a case will be described in which the corresponding frequency information 22 is a clock frequency that does not interfere with a communication frequency band used by each communication carrier as a clock frequency corresponding to each communication carrier. The corresponding frequency information 22 may be information as shown in FIG. FIG. 2 is a diagram illustrating an example of the corresponding frequency information 22 according to the first embodiment of the present invention. The illustrated corresponding frequency information 22 is information indicating a clock frequency for each operation unit 60 corresponding to a combination of a country code and a carrier code (country-specific company code). In the example shown in the figure, the clock frequencies of the LCD and the camera are shown, but the corresponding frequency information 22 only needs to indicate the clock frequency corresponding to the operation unit 60 included in the communication terminal 1.

  The corresponding frequency information 22 shown in the figure also includes clock frequencies that are not associated with the country code and the carrier code. These clock frequencies are the above-mentioned “initial values”. When the communication terminal 1 is activated, first, each operation unit 60 is operated with the initial values. When the country code and the carrier code are read from the first SIM card 31 or the second SIM card 32, the clock frequency corresponding to the read code combination is specified from the corresponding frequency information 22, Thus, the clock frequency for operating each operating unit 60 is switched.

  For example, if the country code read from the first SIM card 31 or the second SIM card 32 is A and the carrier code is 002, the clock frequency for operating the LCD (operation unit 60) is the initial value. From “f000” to “f002”. Similarly, the clock frequency for operating the camera (operation unit 60) is switched from the initial value “f010” to “f012”. Since the clock frequency after switching is a frequency that does not interfere with the radio frequency band, by performing this switching, wireless communication can be performed in a good communication environment in which no interference problem occurs. Note that the LCD needs to be started when the communication terminal 1 is activated, and the above-described switching needs to be performed. However, the operation unit 60 (for example, a camera) that does not need to start operation when the communication terminal 1 is activated may be started at a frequency that does not interfere with the radio frequency band without starting the operation with the initial value.

[Process flow]
Next, the flow of processing (communication terminal control method) executed by the communication terminal 1 will be described with reference to FIG. FIG. 3 is a flowchart illustrating an example of processing performed when the communication terminal 1 according to the first embodiment of the present invention is activated. For simplicity, an example in which the clock frequency is set for one operation unit 60 will be described. However, the clock frequency is set for each operation unit 60.

  When the communication terminal 1 is activated, the frequency specifying unit 12 reads the initial value of the clock frequency from the corresponding frequency information 22, notifies the operation clock setting unit 13 and sets the clock frequency for operating the operation unit 60 (S1). ). Subsequently, the operation clock setting unit 13 activates the operation unit 60 (S2) and operates the notified clock frequency (initial value). Note that the processing of S1 and S2 may be omitted for the operation unit 60 such as a camera that does not need to be activated when the communication terminal 1 is activated.

  When the communication terminal 1 is activated, the identification information acquisition unit 11 acquires the first country code and the first communication carrier code from the first SIM card 31, and the second SIM card 32. To obtain the second country code and the second carrier code (S3, identification information obtaining step). The acquired country code and carrier code are output to the frequency specifying unit 12. Thereafter, the control unit 10 performs a process of changing the clock frequency of the operation unit 60 to a clock frequency that does not interfere with the first communication service (S4).

  FIG. 4 is a flowchart showing a flow of a change process to the clock frequency that does not interfere with the first communication service, which is executed by the communication terminal 1 according to the first embodiment of the present invention. As shown in the figure, the frequency specifying unit 12 determines whether the clock frequencies corresponding to both codes acquired from the first SIM card 31 are registered in the corresponding frequency information 22 (S21). If NO in S21, the clock frequency of the operation unit 60 is not changed, and the process shown in FIG. 4 ends. On the other hand, if YES in S21, the frequency specifying unit 12 specifies the clock frequency (first frequency) registered in the corresponding frequency information 22 (S22), and the specified clock frequency is set in the operating unit 60. It is determined whether it is equal to the current clock frequency (S23). Note that when the processing of FIG. 4 is executed immediately after the communication terminal 1 is activated, the current clock frequency is an initial value.

  If YES in S23, the clock frequency is not changed, and the process shown in FIG. 4 ends. On the other hand, if NO in S23, the frequency specifying unit 12 notifies the operation clock setting unit 13 of the clock frequency specified in S22. The operation clock setting unit 13 changes the clock frequency for operating the operation unit 60 to a clock frequency that does not interfere with the notified first communication service (S24, operation clock setting step), and the processing in FIG. 4 ends. .

  After S4, the radio control unit 15 communicates with a base station corresponding to the first communication service (hereinafter referred to as the first base station), and registers the location of the communication terminal 1 in the first communication service (S5). ). In S5 after S24, since the clock frequency of the operation unit 60 has been switched to a frequency that does not interfere with the frequency band used for the wireless communication corresponding to the first communication service, the first communication can be reliably performed in a short time. Location registration for the service is completed.

  The effect of switching to a frequency that does not interfere with the frequency band used for wireless communication extends not only to location registration but also to, for example, waiting for an incoming call, a call, or other communication in general. That is, by the above switching, the communication terminal 1 can perform communication in the first communication service without interference (or with little interference).

  After S5, the communication quality measuring unit 14 measures the communication quality (hereinafter referred to as the first communication quality) performed between the wireless communication unit 50 and the first base station (S6). As the first communication quality, the received power level of a pilot signal, a reference signal, or other signal received in a predetermined time slot is measured. The communication quality measuring unit 14 may average each measured received power level over a predetermined period. The communication quality measuring unit 14 determines whether or not the measured first communication quality exceeds a predetermined threshold value. This threshold value is prepared in advance in a predetermined storage area (for example, the storage unit 20) in the communication terminal 1.

  If YES in S7, the wireless communication unit 50 continues to use the first communication service for a certain time (S8). Thereafter, the process of FIG. 3 returns to S6. Therefore, the use of the first communication service is continued while the first communication quality continues to exceed the threshold value.

  On the other hand, if NO in S7, the wireless control unit 15 deletes the location registration for the first communication service (S9). Thereby, the use of the first communication service is stopped. The wireless control unit 15 records the measured first communication quality in the storage unit 20. Thereafter, the control unit 10 executes a process of changing the clock frequency of the operation unit 60 to a clock frequency that does not interfere with the second communication service (S10).

  FIG. 5 is a flowchart showing a flow of a change process to the clock frequency that is executed by the communication terminal 1 according to the first embodiment of the present invention and does not interfere with the second communication service. As illustrated, the frequency specifying unit 12 determines whether or not the clock frequency (second frequency) corresponding to both codes acquired from the second SIM card 32 is registered in the corresponding frequency information 22 (S31). If NO in S31, the wireless control unit 15 does not change the clock frequency of the operation unit 60, and the process illustrated in FIG. 5 ends. On the other hand, if YES in S31, the frequency specifying unit 12 specifies the clock frequency registered in the corresponding frequency information 22 (S32) and notifies the operation clock setting unit 13 of this. The operation clock setting unit 13 changes the clock frequency for operating the operation unit 60 to a clock frequency that does not interfere with the notified second communication service (S33, operation clock switching step), and the processing in FIG. 5 ends. .

  After S10, the radio control unit 15 communicates with a base station corresponding to the second communication service (hereinafter referred to as a second base station), and registers the location of the communication terminal 1 in the second communication service (S11). , Wireless communication switching step). In S11, since the clock frequency of the operation unit 60 has been switched to a frequency that does not interfere with the frequency band used for the wireless communication corresponding to the second communication service, the position to the second base station can be reliably ensured in a short time. Registration is completed.

  After S11, the communication quality measurement unit 14 measures communication quality (hereinafter referred to as second communication quality) performed between the wireless communication unit 50 and the second base station (S12). The communication quality measurement unit 14 determines whether or not the measured second communication quality exceeds a predetermined threshold (S13). This threshold value is prepared in advance in a predetermined storage area (for example, the storage unit 20) in the communication terminal 1. This threshold value may be the same as or different from the threshold value used for the determination in S7.

  If YES in S13, the wireless communication unit 50 continues to use the second communication service for a certain time (S14). Thereafter, the processing of FIG. 3 returns to S13. Accordingly, the use of the second communication service is continued while the second communication quality continues to exceed the threshold value.

  On the other hand, if NO in S13, the communication quality measuring unit 14 determines whether or not the measured second communication quality exceeds the first communication quality recorded in the storage unit 20 (S15). If YES in S15, the wireless control unit 15 continues to use the second communication service for a certain time (S14). On the other hand, if NO in S15, the wireless control unit 15 deletes the location registration for the second communication service (S16). Thereafter, the process of FIG. 3 returns to S4, the clock frequency corresponding to the first communication service is changed, and the use of the first communication service is started. As described above, when the second communication quality does not exceed the threshold, the wireless control unit 15 selects the use of the communication service corresponding to the better one of the first communication quality and the second communication quality.

[Embodiment 2]
Embodiment 2 according to the present invention will be described below with reference to FIGS. 6 and 7. Each member common to the above-described embodiment is denoted by the same reference numeral, and detailed description thereof is omitted.

  Also in the second embodiment, the case where the clock frequency of the operation unit 60 corresponding to each communication carrier is a clock frequency that does not interfere with the communication frequency band used by each communication carrier will be described.

  FIG. 6 is a block diagram illustrating an example of a main configuration of the communication terminal 1a according to the second embodiment of the present invention. As illustrated, the communication terminal 1a includes a control unit 10a, a storage unit 20, a first SIM card 31, a second SIM card 32, a reference clock generation unit 40, a first wireless communication unit (communication unit) 51, A second wireless communication unit 52 (communication unit) and an operation unit 60 are provided. The control unit 10a controls each unit of the communication terminal 1a in an integrated manner, and includes an identification information acquisition unit 11, a frequency specification unit 12, an operation clock setting unit 13, a communication quality measurement unit 14, a radio control unit 15, and a first control unit 10a. Communication quality measuring unit 16 and second communication quality measuring unit 17.

  In the present embodiment, there is a priority between the first communication service and the second communication service, and specifically, the priority of the first communication service is higher.

[Process flow]
Next, the flow of processing (communication terminal control method) executed by the communication terminal 1a will be described with reference to FIG. FIG. 7 is a flowchart illustrating an example of processing performed when the communication terminal 1a according to the second embodiment of the present invention is activated. The processing in S41 to S43 in FIG. 7 is the same as the processing in S1 to S3 in FIG. After S43, the wireless control unit 15 performs location registration for the first communication service (S44) and location registration for the second communication service (S45). As described above, in this embodiment, before changing the clock frequency of the operation unit 60, the location registration to the first communication service and the location registration to the second communication service are performed. As will be described in detail later, the two location registrations once registered are not deleted when the communication service is switched.

  After S45, the wireless control unit 15 sets the second communication service in a standby state (S46). As a result, the first communication service is used, but the second communication service is not used. Thereafter, the wireless control unit 15 executes a clock frequency changing process that does not interfere with the first communication service (S47). Details of this processing are as shown in FIG.

  After S47, the first communication quality measurement unit 16 measures the communication quality (hereinafter referred to as the first communication quality) performed between the first wireless communication unit 51 and the first base station (S48). . The first wireless communication unit 51 determines whether or not the measured first communication quality exceeds a predetermined threshold (S49). This threshold value is prepared in advance in a predetermined storage area (for example, the storage unit 20) in the communication terminal 1a. If YES in S49, the wireless control unit 15 continues the standby state for the second communication service (S50). On the other hand, the first wireless communication unit 51 continues to use the first communication service for a certain time (S51). Thereafter, the processing of FIG. 7 returns to S48. Therefore, the use of the first communication service is continued while the first communication quality continues to exceed the threshold value.

  On the other hand, if NO in S49, the wireless control unit 15 sets the first communication service in a standby state (S52). Thereby, the use of the first communication service is stopped. Next, the wireless control unit 15 cancels the standby state of the second communication service (S53). Thereby, the use of the second communication service is started. Thereafter, the control unit 10 executes a process of changing the clock frequency of the operation unit 60 to a clock frequency that does not interfere with the second communication service (S54). This process is as shown in FIG.

  After S54, the second communication quality measurement unit 17 measures the quality of communication performed between the second wireless communication unit 52 and the second base station (hereinafter referred to as second communication quality) (S55). ). The second communication quality measuring unit 17 determines whether or not the measured second communication quality exceeds a predetermined threshold (S56). This threshold value is prepared in advance in a predetermined storage area (for example, the storage unit 20) in the communication terminal 1a. This threshold value may be the same as or different from the threshold value used for the determination in S49.

  If YES in S56, the wireless control unit 15 continues the standby state of the first communication service (S57). On the other hand, the second wireless communication unit 52 continues to use the second communication service for a certain time (S58). Thereafter, the process of FIG. 7 returns to S55. Accordingly, the use of the second communication service is continued while the second communication quality continues to exceed the threshold value.

  On the other hand, when it is determined that the second communication quality does not exceed the threshold value (NO in S56), the second communication quality measurement unit 17 uses the second communication quality recorded in the storage unit 20 as the measured second communication quality. It is determined whether or not the communication quality exceeds 1 (S59). If YES in S59, the wireless control unit 15 continues the standby state of the first communication service (S57). Further, the second wireless communication unit 52 continues to use the second communication service for a certain time (S58). On the other hand, if NO in S59, the wireless control unit 15 sets the second communication service in a standby state (S60). Further, the standby state of the first communication service is canceled (S61). Thereafter, the process of FIG. 7 returns to S47, the clock frequency that does not interfere with the first communication service is changed, and the use of the first communication service is started. As described above, when the second communication quality does not exceed the threshold, the wireless control unit 15 selects the use of the communication service corresponding to the better one of the first communication quality and the second communication quality.

  In Embodiment 1 of this invention, when switching from a 1st communication service to a 2nd communication service, it is necessary to delete the location registration to a 1st communication service. On the other hand, this is not necessary in the present embodiment. That is, since the communication terminal 1a of the present embodiment can simultaneously register the location in the first communication service and the second communication service, the communication service to be used can be used while maintaining the location registration in the first communication service. The communication service can be switched to the second communication service.

[Embodiment 3]
Embodiment 3 according to the present invention will be described below with reference to FIGS. 8 and 9. Each member common to the above-described embodiment is denoted by the same reference numeral, and detailed description thereof is omitted.

  Also in the third embodiment, a case will be described in which the clock frequency of the operation unit 60 corresponding to each communication carrier is a clock frequency that does not interfere with the communication frequency band used by each communication carrier.

  FIG. 8 is a block diagram showing an example of a main configuration of a communication terminal 1b according to Embodiment 3 of the present invention. As illustrated, the communication terminal 1b includes a control unit 10b, a storage unit 20, a first SIM card 31, a second SIM card 32, a reference clock generation unit 40, a wireless communication unit 50, and an operation unit 60. Yes. The control unit 10b controls each unit of the communication terminal 1b in an integrated manner, and includes an identification information acquisition unit 11, a frequency specifying unit 12, an operation clock setting unit 13, a radio control unit 15, an application selection unit 18, and corresponding communication. A service determination unit 19 (determination unit) is included.

  As described above, in the first and second embodiments of the present invention, the first wireless communication and the second wireless communication are switched based on the communication quality or the second communication quality in the communication terminal 1 or 1a. On the other hand, in the present embodiment, the first communication service and the second communication service are switched according to the type of application executed in the communication terminal 1b, or more specifically, according to the type of wireless communication supported by the application. It is done.

(Process flow)
Next, the flow of processing (communication terminal control method) executed by the communication terminal 1b will be described with reference to FIG. FIG. 9 is a flowchart illustrating an example of processing performed when the communication terminal 1b according to Embodiment 3 of the present invention is activated. S71 to S73 in FIG. 9 are the same as the processes in S1 to S3 in FIG.

  After S73, the application selection unit 18 selects an application to be executed in the communication terminal 1b based on, for example, an input operation by the user (S74), and notifies the corresponding communication service determination unit 19 of the result. When an unstarted application is selected, it is newly started and executed. When an application that is started but not active is selected, it is activated and executed.

  The corresponding communication service determination unit 19 determines whether or not the selected application, that is, the application currently being executed in the communication terminal 1b corresponds to the first communication service (S75). For example, assume that the first communication service is a voice communication service and the second communication service is a data communication service. When the type of application currently selected in the communication terminal 1b is an application that performs voice communication, this application needs to use the first communication service (voice communication service). In other words, this application corresponds to the first communication service (first wireless communication). Therefore, if the selected application type is a voice communication application, S75 is YES.

  If S75 is YES, the wireless control unit 15 determines whether or not the communication terminal 1b is currently using the first communication service (S76). If S76 is YES, there is no need to switch the communication service, so the selected application uses the first communication service that is currently valid. Also, the processing of FIG. 9 returns to S74.

  On the other hand, if S76 is NO, the wireless control unit 15 deletes the location registration for the second communication service (S77). Thereby, the use of the second communication service is stopped. Thereafter, the control unit 10 executes a process of changing the clock frequency of the operation unit 60 to a clock frequency that does not interfere with the first communication service (S78). Details of this processing are as shown in FIG. After S78, the wireless control unit 15 communicates with the first base station corresponding to the first communication service, and registers the location of the communication terminal 1 to the first communication service (S79). As a result, the selected application can use the corresponding first communication service. Thereafter, the process of FIG. 9 returns to S74.

  When the type of application currently selected in the communication terminal 1b is a data communication application such as a browser application or an image browsing application, this application needs to use the second communication service (data communication service). In other words, this application corresponds to the second communication service (second wireless communication). Therefore, if the selected application type is a data communication application, S75 is NO.

  If S75 is NO, the wireless control unit 15 determines whether or not the communication terminal 1b is currently using the second communication service (S80). If S80 is YES, there is no need to switch the communication service, so the selected application uses the second communication service that is currently valid. Also, the processing of FIG. 9 returns to S74.

  On the other hand, if S80 is NO, the wireless control unit 15 deletes the location registration for the first communication service (S81). Thereby, the use of the first communication service is stopped. Thereafter, the control unit 10 executes a process of changing the clock frequency of the operation unit 60 to a clock frequency that does not interfere with the second communication service (S82). Details of this processing are as shown in FIG. After S78, the wireless control unit 15 communicates with the second base station corresponding to the second communication service, and registers the location of the communication terminal 1 for the second communication service (S83). As a result, the selected data application can use the corresponding second communication service. Thereafter, the process of FIG. 9 returns to S74.

  As described above, according to the present embodiment, the communication terminal 1b can use an appropriate communication service according to the type of application selected in the communication terminal 1b.

  In the above-described example of the third embodiment, the operation clock setting unit 12 is a specification that does not interfere with the frequency band used by the communication carrier corresponding to any one of the plurality of clock frequencies that can be used in the communication terminal 1b. However, the present invention is not limited to this, and the operation clock setting unit 12 sets a specific clock frequency corresponding to the amount of data processed in each application to the operation unit. You may set to 60. For example, in the present embodiment, the first communication service is a voice communication service and the second communication service is a data communication service. However, when the voice communication service is used, the amount of data communication in the wireless communication unit 50 is small, In addition, the amount of data processed in the operation unit 60 is small. Therefore, when using the voice communication service, the operating unit 60 can operate appropriately without delay even if the clock frequency of the operating unit 60 is low. Moreover, this can also reduce the power consumption of the communication terminal 1b.

  On the other hand, when the data communication service is used, the data communication amount in the wireless communication unit 50 is large and the data processing amount in the operation unit 60 is large. Therefore, if the clock frequency of the operation unit 60 is increased when using the data communication service, the operation speed of the operation unit 60 increases, so that the operation unit 60 can appropriately process a large amount of data without delay.

  Therefore, when the application selected by the user is a call application that uses a voice communication service, the operation clock setting unit 12 switches the clock frequency of the operation unit 60 to a lower clock frequency corresponding to the voice communication service. At this time, the wireless control unit 15 switches the communication service used in the wireless communication unit 50 to the first communication service supported by the call application.

  On the other hand, when the application selected by the user is an application that uses a data communication service, such as a video playback application, the operation clock setting unit 12 sets the clock frequency of the operation unit 60 higher than that corresponding to the data communication service. Switch to clock frequency. At this time, the wireless control unit 15 switches the communication service used in the wireless communication unit 50 to the second communication service supported by the video playback application.

  At this time, focusing on the display unit as the operation unit 60, the operation unit 60 only has to display a still image such as a name and a telephone number related to the other party on the screen when executing the call application. Even when the clock frequency is low, the operation unit 60 can operate appropriately. On the other hand, when the moving image reproduction application is executed, the operation unit 60 needs to display a moving image on the screen, and thus the operation unit 60 needs high processing capability. Therefore, the operating unit 60 can be appropriately operated by increasing the clock frequency of the operating unit 60.

  In this embodiment, each telecommunications carrier can also provide a unique communication service that is different from any of the first communication service and the second communication service described above. Further, the user can install an application that uses the unique communication service in the communication terminal 1b. In this case, if the selected application corresponds to one of the unique communication services, the communication terminal 1b interferes with each of the first communication service and the second communication service according to the selected application. The processing shown in FIGS. 4 and 5 may be executed so that the operating unit 60 is operated at a clock frequency that is not.

[Example of software implementation]
The control blocks (particularly the control units 10, 10a, and 10b) of the communication terminals 1, 1a, and 1b may be realized by a logic circuit (hardware) formed in an integrated circuit (IC chip) or the like, or a CPU It may be realized by software using (Central Processing Unit).

  In the latter case, the communication terminals 1, 1a, and 1b include a CPU that executes instructions of a program that is software that realizes each function, and a ROM (in which the program and various data are recorded so as to be readable by a computer (or CPU)). A Read Only Memory) or a storage device (these are referred to as “recording media”), a RAM (Random Access Memory) for expanding the program, and the like are provided. And the objective of this invention is achieved when a computer (or CPU) reads the said program from the said recording medium and runs it. As the recording medium, a “non-temporary tangible medium” such as a tape, a disk, a card, a semiconductor memory, a programmable logic circuit, or the like can be used. The program may be supplied to the computer via an arbitrary transmission medium (such as a communication network or a broadcast wave) that can transmit the program. The present invention can also be realized in the form of a data signal embedded in a carrier wave in which the program is embodied by electronic transmission.

[Additional Notes]
The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope shown in the claims, and embodiments obtained by appropriately combining technical means disclosed in different embodiments. Is also included in the technical scope of the present invention. Furthermore, a new technical feature can be formed by combining the technical means disclosed in each embodiment.

  For example, the identification information acquisition unit 11 may acquire the country code and the communication carrier code from the outside of the communication terminal 1, 1a, or 1b instead of the first SIM card 31 or the second SIM card 32. For example, the identification information acquisition unit 11 may acquire the country code and the communication carrier code corresponding to the first communication service (first wireless communication) from the first server that provides the first communication service. . Further, the identification information acquisition unit 11 may acquire the country code and the communication carrier code corresponding to the second communication service (second wireless communication) from the second server that provides the second communication service. Good.

  Further, the communication terminals 1, 1a, and 1b can switch between three or more communication services as appropriate. In order to realize this, the communication terminal 1 may include three or more SIM card slots. Thereby, three or more SIM cards can be inserted into the communication terminal 1, and the identification information acquisition unit 11 can acquire the country code and the communication carrier code from each of the three or more SIM cards.

  Considering this point, the identification information acquisition unit 11 identifies a plurality of different carrier identification information, each of which identifies a specific communication carrier used for specific wireless communication via the wireless communication unit 50. A plurality of business operator identification information is acquired.

  The operation clock setting unit 13 operates the operation unit 60 at a specific clock frequency among a plurality of clock frequencies. Furthermore, when a predetermined condition is satisfied, the clock frequency of the operation unit 60 is switched to any one of a plurality of clock frequencies according to the predetermined condition.

  Further, the wireless control unit 15 switches the wireless communication performed via the wireless communication unit 50 to one of a plurality of wireless communication according to the predetermined condition when a predetermined condition is satisfied. is there.

  The operation clock setting unit 12 corresponds to a communication service (wireless communication) in which the clock frequency of the operation unit 60 is switched by the radio control unit 15 when a predetermined condition is satisfied when a predetermined condition is satisfied. Switching to a clock frequency that does not interfere with the frequency band used by the carrier.

  The communication terminals 1, 1a, and 1b may perform switching between the first communication service and the second communication service to be used in accordance with an input by the user, not based on their own determination. In this aspect, the communication terminals 1, 1a, and 1b display a predetermined button for switching the communication service on the screen in response to a request from the user. Alternatively, the communication terminals 1, 1a, and 1b may be provided with a predetermined hard key for selecting a communication service in advance. In any case, the communication service used in the wireless communication unit 50 is switched to the first communication service or the second communication service in accordance with the selection operation by the user through the input unit such as these buttons or hard keys. Further, in response to this switching, a clock frequency that does not interfere with the switched first communication service or second communication service is set in the operation unit 60. In this case, the predetermined condition for switching the communication service is the first communication service (first wireless communication) or the second communication service (second wireless communication) by the user in the communication terminals 1, 1a, and 1b. Is a choice. Of course, even in this aspect, the communication terminals 1, 1a, and 1b can switch between three or more communication services and use them according to the selection by the user.

[Summary]
A communication terminal according to aspect 1 of the present invention is a communication terminal including a communication unit that performs wireless communication and an operation unit that operates at a set clock frequency, and includes a plurality of different operator identification information. Each of the identification information acquisition unit for acquiring a plurality of carrier identification information for identifying a specific communication carrier used for the specific wireless communication via the communication unit, and a specific clock frequency among the plurality of clock frequencies An operation clock setting unit that operates the operation unit at a clock frequency, and when a predetermined condition is satisfied, the clock frequency of the operation unit is set to any one of the plurality of clock frequencies according to the predetermined condition When the predetermined condition is satisfied with the operation clock switching unit that switches to the frequency, the wireless communication performed via the communication unit is changed to the predetermined condition among the plurality of the wireless communication. It is characterized by comprising a radio communication switching unit that any of the switch to the wireless communication Flip was.

  According to the above configuration, when a predetermined condition is satisfied, the current wireless communication via the communication unit is switched to another wireless communication according to the predetermined condition. Further, the current clock frequency of the operating unit is switched to another clock frequency according to a predetermined condition. Thereby, since an appropriate clock frequency corresponding to the wireless communication after switching can be set in the operation unit, the communication terminal can operate appropriately after switching of wireless communication.

  The communication terminal according to aspect 2 of the present invention is the communication terminal according to aspect 1, wherein the operation clock switching unit sets the clock frequency of the operation unit when the predetermined condition is satisfied, and when the predetermined condition is satisfied. Switching to a clock frequency that does not interfere with the frequency band used by the carrier corresponding to the wireless communication switched by the wireless communication switching unit.

  According to the above configuration, when a predetermined condition is satisfied, the current wireless communication via the communication unit is switched to another wireless communication according to the predetermined condition. Further, the current clock frequency of the operating unit is switched to another clock frequency according to a predetermined condition. As a result, the operating unit operates at a clock frequency that does not interfere with the used frequency band corresponding to the wireless communication after switching. Therefore, since the operation of the operation unit does not interfere with the operation of the communication unit, even if the use of different wireless communication services is switched, there is no problem in wireless communication.

  A communication terminal according to aspect 3 of the present invention further includes a communication quality measurement unit that measures communication quality in any one of the wireless communications via the communication unit in the aspect 1, and the predetermined condition is: The communication quality in the wireless communication currently in use is below a predetermined threshold, and the wireless communication switching unit is currently in use when the wireless communication currently in use through the communication unit is being performed. When the communication quality in the wireless communication is less than or equal to the predetermined threshold, the wireless communication performed via the communication unit is switched to another wireless communication different from the wireless communication currently in use. It is said.

  According to the above configuration, when the communication quality of the currently used wireless communication is low, another wireless communication different from this is used, so the opportunity to use the other wireless communication can be expanded.

  A communication terminal according to aspect 4 of the present invention further includes a determination unit according to aspect 1, further comprising: a determination unit that determines which of the plurality of wireless communications is the wireless communication corresponding to an application executed in the communication terminal. The predetermined condition is the wireless communication to which the application executed in the communication terminal corresponds.

  According to said structure, the appropriate radio | wireless communication according to the application performed can be utilized.

  The communication terminal according to aspect 5 of the present invention is characterized in that, in the above aspect 1, the predetermined condition is selection of any one of the wireless communications by a user in the communication terminal.

  According to said structure, suitable radio | wireless communication according to a user's selection can be utilized.

  The communication terminal according to Aspect 6 of the present invention is the communication terminal according to any one of Aspects 1 to 5, wherein the communication unit includes a plurality of different communication units, and each communication unit is connected via the communication unit. It is further characterized by further comprising a location registration unit that controls the plurality of communication units so that the location registration of the communication carrier to the base station is performed.

  According to the above configuration, when switching from one wireless communication to another wireless communication, it is not necessary to delete the location registration to the base station of the carrier that provides any of the wireless communication, There is no need to repeatedly register the location of the same carrier to the base station.

  The communication terminal according to Aspect 7 of the present invention is the communication terminal according to Aspect 5, wherein the wireless communication switching unit satisfies the predetermined condition when any of the wireless communication is performed via any of the communication units. If established, any one of the wireless communication via any of the communication units is set in a standby state, and another wireless communication via another communication unit is started.

  According to said structure, switching from any wireless communication to another wireless communication can be performed reliably.

  A communication terminal control method according to an aspect 8 of the present invention is a communication terminal control method including a communication unit that performs wireless communication and an operation unit that operates at a set clock frequency, and includes a plurality of different projects. Identification information acquisition step, each of which acquires a plurality of carrier identification information for identifying a specific communication carrier used for the specific wireless communication via the communication unit, and a plurality of clocks The operation clock setting step for operating the operation unit at a specific clock frequency among the frequencies, and when a predetermined condition is satisfied, the clock frequency of the operation unit is set according to the predetermined condition among the plurality of clock frequencies. The operation clock switching step for switching to any one of the clock frequencies and the wireless communication performed via the communication unit when the predetermined condition is satisfied are duplicated. It is characterized by having from the wireless communication switching step of switching to any of the wireless communication in accordance with the predetermined condition of the wireless communication.

  According to said structure, there exists an effect similar to the aspect 1 mentioned above.

  The communication terminal according to each aspect of the present invention may be realized by a computer. In this case, the communication terminal is realized by a computer by operating the computer as each unit (software element) included in the communication terminal. A control program for a communication terminal and a computer-readable recording medium on which the control program is recorded also fall within the scope of the present invention.

  1, 1a, 1b Communication terminal 10, 10a, 10b Control unit 11 Identification information acquisition unit, 12 Frequency identification unit, 13 Operation clock setting unit (operation clock switching unit), 14 Communication quality measurement unit, 15 Radio control unit (wireless Communication switching unit, location registration unit), 16 first communication quality measurement unit, 17 second communication quality measurement unit, 18 application selection unit, 19 corresponding communication service determination unit (determination unit), 20 storage unit, 21 country / Business operator identification information (business operator identification information), 22 Corresponding frequency information, 31 1st SIM card, 32 2nd SIM card, 50 wireless communication part (communication part), 51 1st wireless communication part (communication part) , 52 Second wireless communication unit (communication unit), 60 operation unit

Claims (5)

A communication terminal including a communication unit that performs wireless communication and an operation unit that operates at a set clock frequency,
A plurality of different carrier identification information, each of which obtains a plurality of carrier identification information for identifying a specific communication carrier used for specific wireless communication via the communication unit; ,
An operation clock setting unit for operating the operation unit at a specific clock frequency among a plurality of clock frequencies;
When a predetermined condition is satisfied, an operation clock switching unit that switches the clock frequency of the operation unit to any one of the plurality of clock frequencies according to the predetermined condition;
A wireless communication switching unit configured to switch wireless communication performed via the communication unit to any one of the plurality of wireless communication according to the predetermined condition when the predetermined condition is satisfied; Huh,
A determination unit for determining which of the plurality of wireless communications is the wireless communication supported by the application executed in the communication terminal;
The predetermined condition is the wireless communication corresponding to the application executed in the communication terminal,
When the wireless communication corresponding to the predetermined condition is voice communication, the operation clock switching unit switches to a lower clock frequency corresponding to the voice communication, and the wireless communication corresponding to the predetermined condition is data In the case of communication, the communication terminal is switched to a higher clock frequency corresponding to the data communication . The communication unit includes a plurality of different communication units,
Each of the communication units further includes a location registration unit that controls a plurality of the communication units so that the location registration of any of the communication carriers to the base station is performed via the communication unit. The communication terminal according to claim 1 , wherein: When the predetermined condition is satisfied when any of the wireless communication is performed via any of the communication units, the wireless communication switching unit may perform any of the communication via any of the communication units. The communication terminal according to claim 2 , wherein the wireless communication is set in a standby state and the other wireless communication via the other communication unit is started. A communication terminal control method comprising: a communication unit that performs wireless communication; and an operation unit that operates at a set clock frequency,
A plurality of different carrier identification information, each of which obtains a plurality of carrier identification information for identifying a specific communication carrier used for the specific wireless communication via the communication unit; ,
An operation clock setting step of operating the operation unit at a specific clock frequency among a plurality of clock frequencies;
When a predetermined condition is satisfied, an operation clock switching step of switching the clock frequency of the operation unit to any one of the plurality of clock frequencies according to the predetermined condition;
A wireless communication switching step for switching wireless communication performed via the communication unit to any one of the plurality of wireless communication according to the predetermined condition when the predetermined condition is satisfied; And
A determination step of determining which of the plurality of wireless communications is the wireless communication corresponding to the application executed in the communication terminal;
The predetermined condition is the wireless communication corresponding to the application executed in the communication terminal,
In the operation clock switching step, when the wireless communication according to the predetermined condition is voice communication, the wireless communication is switched to a lower clock frequency corresponding to the voice communication, and the wireless communication according to the predetermined condition is data In the case of communication, the communication terminal control method is characterized by switching to a higher clock frequency corresponding to the data communication . A control program for causing a computer to function as the communication terminal according to claim 1, wherein the identification information acquisition unit, the operation clock setting unit, the operation clock switching unit, the wireless communication switching unit, and the determination unit A control program to make a computer function.

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