JP5741095B2 - Wireless communication apparatus and power saving control method - Google Patents

Description

  The present invention relates to a wireless communication apparatus having a communication processor and an application processor.

  In recent years, in response to diversification of applications, mobile phones having a two-processor configuration having a communication processor and an application processor are increasing. On the other hand, the number of models equipped with high-performance applications such as smartphones is increasing, and these models are operated with high-speed application processors. is there.

  In order to reduce the power consumption of the mobile phone, it is most effective to shift the application processor to the power saving state (hibernation state). However, user interface operations such as key entry and screen display are for applications. Controlled by a processor. Furthermore, when a conventional mobile phone is located in an LTE (Long Term Evolution) network that provides a voice call based on VoIP (Voice over Internet Protocol), an application processor is used to execute processing related to VoIP. Control is performed. Under these circumstances, it is difficult for the conventional mobile phone to suspend all the functions of the application processor.

  On the other hand, as power saving control in a conventional mobile phone, for example, a technique for reducing power consumption when an emergency call is received in digital broadcasting is disclosed. In this technology, when a receiver in a mobile phone receives an emergency warning signal, the power supply to a predetermined circuit is stopped (shifting to a power saving state), and the function of prohibiting use is gradually increased. ing. Ultimately, only the function for making and receiving calls and the function for editing and sending / receiving e-mail are available.

JP 2007-243793 A

  However, the conventional mobile phone described in the above prior art document needs to always receive a digital broadcast until it receives an emergency call in order to shift to the power saving state. This is not realistic because it consumes a battery. For example, when a conventional mobile phone makes a voice call after shifting to a power saving state, the battery is depleted due to the constant reception of digital broadcasting, and for example, there is a situation where important processing such as a rescue request or safety confirmation cannot be performed. There was a problem that could occur. Further, since the power saving control in the conventional mobile phone described in the above prior art document does not stop all the functions of the application processor, there is room for further improvement in terms of effectively suppressing power consumption.

  The disclosed technology has been made in view of the above, and an object thereof is to provide a wireless communication device that can more effectively suppress power consumption when it has a communication processor and an application processor. To do.

  In one aspect, a wireless communication device disclosed in the present application includes a first processor that executes an application that processes input information supplied from a user interface in response to a user operation, and the first processor is suspended. A second processor that performs processing related to the user interface in a state.

  According to one aspect of the wireless communication device disclosed in the present application, when the communication processor and the application processor are provided, the power consumption can be more effectively suppressed.

FIG. 1 is a diagram illustrating a configuration example of a mobile phone. FIG. 2 is a flowchart showing a power saving control method. FIG. 3 is a flowchart showing a power saving control method. FIG. 4 is a flowchart showing a power saving control method.

  Embodiments of a wireless communication apparatus and a power saving control method disclosed in the present application will be described below in detail with reference to the drawings. In the following embodiment, a mobile phone will be described as an example of a wireless communication device, but the present invention is not limited to this embodiment.

  FIG. 1 is a diagram illustrating a configuration example of a mobile phone which is an example of a wireless communication device disclosed in the present application. In FIG. 1, the mobile phone of this embodiment includes a communication processor 1, an application processor 2, a shared memory 3, a wireless unit 4, a power supply 5, a power supply control unit 6, and an antenna 9. Signals are exchanged between the communication processor 1, application processor 2, and shared memory 3 via the system bus 7. The shared memory 3 is a shared memory of the communication processor 1 and the application processor 2, and is, for example, a NAND flash memory that is an example of a nonvolatile memory.

  In FIG. 1, the mobile phone of this embodiment further includes an LCD (Liquid Crystal Display) 31, an operation unit (KEY) 32, an LCD 33, a microphone (MIC) 34, a speaker (SP) connected to the general-purpose port 8. ) 35 etc. In addition, a USIM (Universal Subscriber Identity Module) 41 is connected to the communication processor 1. In the present embodiment, as an example, a mobile phone having a two-screen configuration is assumed. For example, the LCD 33 having the larger screen is the main LCD, and the LCD 31 having the smaller screen is the sub-LCD. The operation unit (KEY) 32 detects, for example, an operation from a user and supplies an input signal corresponding to the detected operation.

  In FIG. 1, the communication processor 1 includes a communication control unit 11, a USIM control unit 12, a simple application execution unit 13, and an HMI (Human Machine Interface) control unit 14. Note that when the mobile phone is operating in a normal mode (other than the power saving mode of this embodiment described later) that is an operation mode in which the communication processor 1 and the application processor 2 are simultaneously operated, the simple application execution unit 13 and the HMI The control unit 14 may not be used. For example, the simple application execution unit 13 and the HMI control unit 14 in this case are in a dormant state.

  In FIG. 1, the application processor 2 includes an emergency call reception processing unit 21, a power saving mode control unit 22, a memory 23, an application execution unit 24, a VoIP processing unit 25, and an HMI control unit 26. The application execution unit 24 can execute a plurality of applications simultaneously (multitask). The memory 23 is a memory managed by the application processor 2 and is a NAND flash memory or the like which is an example of a nonvolatile memory. The memory 23 may be mounted inside the application processor 2 or may be mounted outside. The memory 23 may be a portable medium such as an SD card.

  Note that the configuration example of the mobile phone according to the present embodiment described above enumerates the configuration related to the processing of the present embodiment for convenience of explanation, and does not represent all the functions of the mobile phone.

  The mobile phone according to the present embodiment configured as described above shifts from the “normal mode” to the “power saving mode” in which the operation of the application processor 2 is stopped and the operation is limited when an emergency call is received, for example. Thereafter, the minimum operation is performed under the control of the communication processor 1. Note that the above “minimum operation” refers to “voice call” as an example, but other than this, for example, SMS (Short Message Service) editing processing and transmission / reception processing, telephone directory search, etc. May be included. In this embodiment, as an example of the emergency call, a technique called CBS (Cell Broadcast Service) that broadcasts “area mail” simultaneously is used. CBS is standardized by 3GPP (Third Generation Partnership Project), can distribute information of about 600 full-width characters, and is used for purposes other than emergency notification.

  In addition, when the mobile phone according to the present embodiment is located in a communication network that supports VoIP voice calls such as the LTE network when shifting to the power saving mode, the LTE network is switched to the 3G / 2G network. Network migration may be performed. This makes it possible to suspend the operation of hardware resources such as the application processor 2 that executes processing related to VoIP.

  By performing such an operation, the mobile phone of this embodiment can limit the execution of less urgent applications such as games when receiving an emergency call, and can minimize battery consumption. It becomes. In addition, since it is possible to avoid battery consumption due to operation of a less urgent application, it is possible to secure a remaining battery capacity for emergency rescue requests and safety confirmation. Further, when shifting to the power saving mode, it is possible to perform a voice call even when the operation of the application processor 2 is suspended by performing a network transition from the LTE network to the 3G / 2G network. In the present embodiment, the transition to the power saving mode is triggered by the reception of the emergency call by the CBS. However, the present invention is not limited to this. It is good also as shifting to a power saving mode in response to a transition command. Moreover, it is good also as shifting to a power saving mode by reception of signals other than an emergency call. For example, the power saving mode may be entered when a predetermined operation such as a button by the user is detected.

  Next, processing of the mobile phone according to the present embodiment will be described in detail with reference to the drawings. 2 to 4 are flowcharts showing processing of the cellular phone according to the present embodiment, that is, the power saving control method according to the present embodiment. Specifically, FIG. 2 shows the operation of the mobile phone in the initial setting and the normal mode, FIG. 3 shows the transition operation from the normal mode to the power saving mode, and FIG. 4 shows the normal operation from the power saving mode to the normal mode. The mode transition operation is shown. In the following processing, while the mobile phone of this embodiment is operating in the normal mode, the communication processor 1 points the current communication network (LTE network or 3G / 2G network) to the application processor 2 as appropriate. Is assumed to be notified.

  In FIG. 2, the mobile phone first performs an initial setting for realizing the power saving control method of this embodiment. For example, the power saving mode control unit 22 of the application processor 2 starts a predetermined application, and displays an initial setting screen on the LCD 33 connected to the general-purpose port 8 via the HMI control unit 26 (S1). . On the LCD 33, a screen for selecting whether to enable or disable the transition process to the power saving mode when receiving an emergency call is displayed as an initial setting screen. This makes it possible to prompt the user to make important settings on the mobile phone that can be an emergency lifeline. As a default value, for example, “valid” is stored in the memory 23.

  Next, when the user performs a key input operation to the operation unit 32 as a response to the initial setting screen, the power saving mode control unit 22 uses the input information (“valid” or “invalid”) as general-purpose information. Receive via port 8 (S2). When the received input information is “valid” (S3, Yes), the power saving mode control unit 22 maintains “valid” stored in the memory 23 as a default value (S4). On the other hand, when the received input information is “invalid” (S3, No), the power saving mode control unit 22 registers “invalid” in the memory 23 (S5). Note that the initial settings of S1 to S5 can be omitted if necessary. In this case, when an emergency call is received, the transition to the power saving mode is started unconditionally. In addition, “the process of“ enabling ”and“ invalidating ”the process of shifting to the power saving mode at the time of receiving an emergency call” can be appropriately executed even at the time other than the initial setting.

  When the initial setting is performed, the mobile phone according to the present embodiment starts operation in a normal mode (other than the power saving mode) that is an operation mode in which both the communication processor 1 and the application processor 2 are operated (S11). ). When a mobile phone operating in the normal mode is located in a communication network that supports VoIP voice calls such as the LTE network, the VoIP processing unit 25 activates a predetermined application to execute processing related to VoIP. The mobile phone of this embodiment is premised on that a voice call based on VoIP is possible.

  After that, when the emergency call reception processing unit 21 of the application processor 2 receives the emergency call by CBS via the antenna 9, the radio unit 4, and the communication processor 1, the power saving mode control unit 22 Determine whether to enter mode. For example, the power saving mode control unit 22 reads the setting of “valid” / “invalid” regarding the transition to the power saving mode from the memory 23, and when “invalid” is stored (No in S13), The power saving control method of this embodiment is terminated without shifting to the power saving mode. That is, the operation in the normal mode is maintained. On the other hand, when “valid” is stored in the memory 23 (S13, Yes), the process of FIG. 3, that is, the process for shifting from the normal mode to the power saving mode is started.

  When the initial settings of S1 to S5 are omitted, the power saving mode control unit 22 starts a process for unconditionally shifting to the power saving mode without performing the determination process of S13. Further, the power saving mode control unit 22 may start a process for shifting to the power saving mode in response to an input operation to the operation unit 32 by the user (command to shift to the power saving mode). Furthermore, the power saving mode control unit 22 may start processing for shifting to the power saving mode at a timing when it is detected that the remaining amount of the battery is less than a predetermined value. Moreover, the emergency call reception process part 21 starts a predetermined application, and connects the content of the emergency call to the general-purpose port 8 via the HMI control part 26, when the emergency call by CBS is received by the process of S12. Displayed on the LDC 33.

  Next, in FIG. 3, the power saving mode control unit 22 reads the current RAT (Radio Access Technology) selection state from the memory 23, starts a predetermined application, and stores the read RAT selection state in the shared memory 3. (S21). The RAT selection state can be appropriately set by a key input operation to the operation unit 32 by the user. For example, “LTE network”, “3G network / 2G network”, “Auto”, and the like can be set. When the “LTE network” is set as the RAT selection state, the voice call is performed with priority over the LTE network even in a state in which the voice call is possible on a plurality of networks. When “3G network / 2G network” is set as the RAT selection state, the voice call is performed with priority on the 3G network / 2G network even in a state where voice communication is possible on a plurality of networks. When “Auto” is stored as the RAT selection state, the communication processor 1 appropriately determines the network on which the voice call is performed.

  Next, the power saving mode control unit 22 confirms the current communication network that is appropriately notified from the communication processor 1 side (S22). For example, when the current communication network is a network that does not provide a CS (Circuit Switch) service such as an LTE network or a network that provides VoIP as a voice service (S22, Yes), the power saving mode The control unit 22 performs the following processing. For example, the power saving mode control unit 22 forcibly changes the current RAT selection state stored in the memory 23 as the user setting to “3G network / 2G network” (S23), and activates a predetermined application. Control for shifting the visited communication network to the 3G / 2G network is performed. That is, here, the application related to VoIP being executed by the application execution unit 24 of the application processor 2 is terminated. On the other hand, if the current communication network is a 3G network or a 2G network (S22, No), the power saving mode control unit 22 does not perform control for shifting the communication network, and maintains the current communication network.

  Next, the power saving mode control unit 22 reads, for example, phone book data, outgoing call history, incoming call history, etc. stored in the memory 23, starts a predetermined application, and stores the read data in the shared memory 3. (S31). As a result, even when the application processor 2 enters the hibernation state after shifting to the power saving mode, a phone book search or the like by a simple application described later becomes possible.

  Next, the power saving mode control unit 22 stops the operations of all the applications activated by the application execution unit 24 (S32). On the other hand, in the communication processor 1, the simple application execution unit 13 can execute a simple application (single application, such as voice call, SMS, phone book search, and power control), which is the “minimum operation” described above. Task) is started (S32). Thereby, even if it transfers to a power saving mode and the processor 2 for applications becomes a dormant state, voice communication, SMS, telephone directory search, etc. can be performed. In the present embodiment, the “minimum operation” does not necessarily include SMS, phone book search, and the like. For example, when the telephone directory search is not included, the process of S31 can be omitted. Further, the simple application execution unit 13 may load and execute the simple application from the shared memory 3 or may load and execute the simple application from the USIM 41 via the USIM control unit 12. When a simple application is loaded from the USIM 41, the simple application execution unit 13 can reflect a design specific to the communication carrier (such as a telephone number display of the communication carrier) on the simple application by replacing the USIM. . Further, the telecommunications carrier can issue the USIM 41 that does not store the simple application according to the present embodiment to the user, thereby not providing the user with the function of the above-described simple application. Further, the telecommunications carrier changes the function of the simple application provided to the user by changing the contents of the simple application stored in the USIM 41 or the control information thereof according to the contents of the contract with the user (for example, It is also possible to limit the use of some or all of the functions of voice call, SMS, telephone directory search, power control, etc.).

  Next, the simple application execution unit 13 shifts the application processor 2 to the power saving mode (S33). For example, the power supply control unit 6 is instructed to stop the power supply to the application processor 2 via the I2C bus or the like. The power supply control unit 6 controls the power supply 5 according to this instruction, and stops the power supply to the application processor 2 (S33). As a result, the power consumption by the application processor 2 can be reduced to zero. The power supply control unit 6 may suppress power consumption in the application processor 2 by stopping the supply of the operation clock to the application processor 2. In addition, the simple application execution unit 13 stops the operation of the LCD 33 with relatively large power consumption via the HMI control unit 14 simultaneously with the instruction to the power supply control unit 6 (S33), and performs display processing in the power saving mode. Sub LCD 31 is used instead. After shifting to the power saving mode, the simple application execution unit 13 of the communication processor 1 controls the LCD 31, the microphone 34, and the speaker 35 via the HMI control unit 14. The simple application execution unit 13 also corresponds to an input signal supplied from the operation unit 32. Thereby, even when the application processor 2 is in a dormant state, the communication processor 1 can continue control related to the user interface.

  Next, after the application processor 2 is shifted to the power saving mode in the process of S33, the simple application execution unit 13 displays on the LCD 31 that it is operating in the power saving mode via the HMI control unit 14. (S34). As an alternative to the display on the LCD 31, a light emitting element such as an LED provided on the casing of the mobile phone of this embodiment is turned on using a predetermined pattern or light emission color, thereby operating in the power saving mode. May be displayed. Thereby, the user can know that the use of the application is restricted. Thereafter, the mobile phone operates in the power saving mode, and the user can use only limited functions such as voice call, SMS, and telephone directory search (S41).

  Next, the operation of the mobile phone after shifting to the power saving mode will be described. When performing a voice call during operation in the power saving mode, the simple application execution unit 13 uses an input signal (also referred to as input information) supplied from the operation unit 32 that has detected an input operation from the user as an HMI. Received via the control unit 14. Then, based on the received input information, the simple application execution unit 13 gives the communication control unit 11 a command similar to the process related to the outgoing call or incoming call executed in the application processor 2 in the normal mode. . Thereby, a voice call can be performed even in the power saving mode. Note that the input of the telephone number for specifying the other party of the voice call is realized by detecting the operation associated with the number by a predetermined number of digits (direct input of the telephone number). Further, for example, it may be realized by detecting an operation for selecting a desired number from the telephone directory data stored in the shared memory 3 (selection input of a telephone number). Thereby, even during the power saving mode, the same search process as that in the normal mode can be executed. Further, by copying or moving information such as incoming call history and outgoing call history managed in the memory 23 of the application processor 2 to the shared memory 3 at any time or at the processing timing of S31, such information can be saved. Even during the power mode, it can be used as in the normal mode. In addition, when copying to the shared memory 3, compressed data from which some data such as attribute information added to the original data (phone book, history, etc.) is omitted may be the copy target. For example, the amount of information in the power saving mode can be reduced by excluding data that cannot be used in a simple application, information with low urgency, and the like from the copy target.

  Next, an operation for shifting from the power saving mode to the normal mode will be described. In FIG. 4, when an input operation instructing “shift to the normal mode” is detected (S 51), the simple application execution unit 13 displays the power saving mode display displayed on the LCD 31 via the HMI control unit 14. A process of erasing is performed (S52). The simple application execution unit 13 then instructs the power supply control unit 6 to resume power supply to the application processor 2 via, for example, the I2C bus. The power supply control unit 6 controls the power supply 5 in accordance with this instruction, and resumes power supply to the application processor 2 (S53). Note that the power supply control unit 6 may restore the application processor 2 from the hibernation state by restarting the supply of the operation clock signal to the application processor 2.

  Next, in the application processor 2 whose power supply has been resumed, the power saving mode control unit 22 activates a predetermined application and starts a process of shifting to the normal mode (S54). On the other hand, the simple application execution unit 13 ends the process of the simple application (S54). Then, the power saving mode control unit 22 reads out the user-set RAT selection state stored in the processing of S21 from the shared memory 3 (S55), and stores the RAT selection state in the original area of the memory 23 ( Re-register) (S56). As a result, the mobile phone can perform a voice call over the communication network set by the user in the normal mode. Thereafter, the mobile phone operates in the normal mode, and the user can use all the functions installed in the mobile phone (S61).

  As described above, the mobile phone according to the present embodiment enables the transition to the “power saving mode” in which the communication processor performs the voice call while the operation of the application processor is suspended. Thereby, power consumption can be effectively suppressed.

  In this embodiment, the memory 23 is provided in the application processor 2. However, the present invention is not limited to this, and the shared memory 3 may have the area of the memory 23 without providing the memory 23 in the application processor 2. It is good.

  Further, in this embodiment, a case where a simple application to be operated in the communication processor 1 is acquired from the USIM 41 is taken as an example, but an available IC card (Integrated Circuit card) is not limited thereto. Examples of usable IC cards include a SIM (Subscriber Identity Module Card), a UIM (User Identity Module card), and a UICC (Universal Integrated Circuit Card).

  In this embodiment, a two-screen mobile phone is assumed, but the present invention is not limited to this. For example, in the case of a one-screen configuration, the LCD is always operable even when the mode is shifted to the power saving mode. In the case of three or more screens, one LCD screen with the least power consumption is left and the other LCD operations are stopped.

  The following supplementary notes are further disclosed with respect to the embodiments including the above examples.

(Supplementary note 1) a first processor that executes an application that processes input information supplied from a user interface in response to a user operation;
A second processor that performs processing related to the user interface in a state where the first processor is in a sleep state;
A wireless communication apparatus comprising:

(Supplementary Note 2) In a state where the first processor is capable of executing the application, the first processor executes processing related to the interface, and the second processor executes processing related to wireless communication; ,
In a state where the first processor is in a sleep state, the second processor performs a process related to the user interface, and the second processor executes a process related to wireless communication.
The wireless communication apparatus according to appendix 1, further comprising:

(Supplementary note 3) When shifting from the power saving mode to another mode, the receiving port of the input information supplied from the user interface is switched from the second processor to the first processor.
The wireless communication apparatus according to Supplementary Note 2, wherein

(Appendix 4) During operation in the power saving mode,
The second processor acquires input information supplied from the user interface in response to a transmission operation or an incoming operation by a user, and performs communication control based on the input information.
The wireless communication apparatus according to appendix 2 or 3, characterized by the above.

(Additional remark 5) Said 1st processor stores the data regarding a contact in the storage area which can be shared by said 1st processor and said 2nd processor,
During operation in the power saving mode,
The second processor acquires input information supplied from the user interface in response to an operation for selecting any of the information on the contact stored in the sharable storage area, and is specified by the input information Communication control based on information about the contact information to be performed,
The wireless communication apparatus according to Supplementary Note 2, 3 or 4, wherein:

(Appendix 6) When shifting from the normal mode to the power saving mode,
When the current in-zone communication network is an LTE network, the current in-zone communication network is shifted to a 3G / 2G network.
The wireless communication device according to any one of appendices 2 to 5, characterized in that:

(Appendix 7) When shifting from the normal mode to the power saving mode,
The second processor reads and executes a simple application for executing the acting process from a storage area that can be shared by the first processor and the second processor.
The wireless communication apparatus according to any one of appendices 2 to 6, characterized in that:

(Additional remark 8) It further has an IC card communication part which acquires information from an IC card which stores identification information used as information which identifies an own terminal in a wireless communication network, and a program executable in the second processor,
When shifting from the normal mode to the power saving mode,
The second processor executes the program acquired by the IC card communication unit in the power saving mode.
The wireless communication apparatus according to any one of appendices 2 to 7, characterized in that:

(Supplementary Note 9) When an emergency call is received via an antenna, the normal mode is shifted to the power saving mode.
The wireless communication apparatus according to any one of appendices 2 to 8, characterized in that:

(Supplementary Note 10) When the input information supplied from the user interface is acquired in response to an operation for instructing the shift to the power saving mode, the normal mode shifts to the power saving mode.
The wireless communication device according to any one of appendices 2 to 9, wherein

(Supplementary Note 11) A method for controlling a wireless communication device including a first processor and a second processor,
The first processor shifts from a state in which an application for processing input information supplied from a user interface according to a user operation can be executed to a dormant state,
In a state where the first processor is in a sleep state, the second processor performs a process related to the interface.
A power saving control method characterized by the above.

DESCRIPTION OF SYMBOLS 1 Communication processor 2 Application processor 3 Shared memory 4 Radio | wireless part 5 Power supply 6 Power supply control part 7 System bus 8 General-purpose port 9 Antenna 11 Communication control part 12 USIM control part 13 Simple application execution part 14 HMI control part 21 Emergency call reception process Unit 22 power saving mode control unit 23 memory 24 application execution unit 25 VoIP processing unit 26 HMI control unit 31 LCD
32 Operation unit 33 LCD
34 Microphone 35 Speaker 41 USIM

Claims (9)

A first processor that executes an application that performs at least processing related to a voice call with respect to input information supplied from a user interface according to a user's operation;
A processor that executes processing related to wireless communication, and performs processing related to voice communication performed by the first processor for input information supplied from the user interface in a state where the first processor is in a suspended state. A second processor that executes processing related to wireless communication including processing;
A wireless communication apparatus comprising: In a state in which the first processor can execute the application, the first processor executes at least processing related to a voice call with respect to input information supplied from the user interface, and the second processor executes the voice call. A normal mode for executing processing related to wireless communication different from processing related to
In the state in which the first processor is in a suspended state, the second processor performs all of the processing related to the voice call performed by the first processor for the input information supplied from the user interface. A power saving mode in which a second processor executes a process related to wireless communication including the acting process;
The wireless communication apparatus according to claim 1, further comprising: When shifting from the power saving mode to another mode, the input information supplied from the user interface is switched from the second processor to the first processor.
The wireless communication apparatus according to claim 2. During operation in the power saving mode,
The second processor acquires input information supplied from the user interface in response to a transmission operation or an incoming operation by a user, and performs communication control based on the input information.
The wireless communication device according to claim 2, wherein the wireless communication device is a wireless communication device. The first processor stores data related to contact information in a storage area that can be shared by the first processor and the second processor;
During operation in the power saving mode,
The second processor acquires input information supplied from the user interface in response to an operation for selecting any of the information on the contact stored in the sharable storage area, and is specified by the input information Communication control based on information about the contact information to be performed,
The wireless communication apparatus according to claim 2, 3, or 4. When shifting from the normal mode to the power saving mode,
When the current in-zone communication network is an LTE network, the current in-zone communication network is shifted to a 3G / 2G network.
The wireless communication device according to claim 2, wherein the wireless communication device is a wireless communication device. When shifting from the normal mode to the power saving mode,
The second processor reads and executes a simple application for executing the acting process from a storage area that can be shared by the first processor and the second processor.
The wireless communication device according to claim 2, wherein the wireless communication device is a wireless communication device. An IC card communication unit that acquires information from an IC card that stores identification information used as information for identifying the terminal in the wireless communication network and a program executable by the second processor;
When shifting from the normal mode to the power saving mode,
The second processor executes the program acquired by the IC card communication unit in the power saving mode.
The wireless communication device according to claim 2, wherein the wireless communication device is a wireless communication device. A method for controlling a wireless communication device comprising a first processor and a second processor,
The first processor shifts from a state in which an application for performing at least processing related to a voice call to input information supplied from a user interface according to a user's operation from a state in which execution is possible,
The second processor is a processor that executes processing related to wireless communication, and in a state where the first processor is paused, the second processor performs the first processing on input information supplied from the user interface. Substituting processing related to voice calls performed by a processor, and executing processing related to wireless communication including the processing for proxying,
A power saving control method characterized by the above.

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