JP5979716B2 - Communication equipment - Google Patents

Description

  The present invention relates to a communication device that performs wireless communication.

Conventionally, a communication device such as a mobile phone, a smartphone, or a tablet terminal performs data communication using a network of a wireless communication system such as WiMAX (registered trademark) or CDMA.
Further, for example, Patent Document 1 discloses a technique for preferentially searching for a base station from a communication mode with high use frequency.

JP 2004-260503 A

  By the way, communication devices including a touch screen display such as a smartphone or a tablet terminal tend to require a lot of power for execution, display, communication, and the like of applications with higher functionality. Therefore, it is required to reduce power consumption without reducing user convenience.

  However, depending on the use case in which the user uses the communication device, when the display power is off and no operation input is accepted and data communication is not performed, the communication device is connected to the network or searching, and the power of the communication device is reduced. Was consumed unnecessarily.

  An object of this invention is to provide the communication apparatus which can be connected to a network efficiently.

Communication device according to the present invention, the display unit and a communication unit that performs wireless communication via a wireless connection with the network, in a state where the wireless connection is disconnected and the network, the power of the display unit on- radio with the network at intervals of the first time when attempts wireless connection to the network at intervals shorter second time than the first time, the power of the display unit of the off in the case of A control unit that attempts to connect , wherein the control unit is triggered by the fact that the power of the display unit is switched from on to off in a state in which the wireless connection with the network is disconnected. A wireless connection with the network is attempted after a lapse of time .

Further, the control unit, the control unit, in a state where the wireless connection with the network is disconnected, attempts to authenticate to the network, if successful in the authentication, the network entry to the network It may be done.

In addition, the control unit attempts to establish a wireless connection with the network after the second time has elapsed when the display unit is powered on in a state where the wireless connection with the network is disconnected. If the wireless connection with the network fails, the wireless connection with the network may be attempted after a lapse of a third time that is less than the first time and greater than the second time .

And Table radical 113 engages Ru in the present invention, a processor for controlling the communication apparatus including a communication unit that performs wireless communication via a wireless connection to the network, a, in a state where the wireless connection with the network is disconnected, If the power of the display unit on, the attempt a wireless connection with the network at intervals shorter than the first time second time, when the power of the display unit is off, the spacing of the first hour in the process of attempting a wireless connection with the network, in a state where the wireless connection is disconnected and the network, triggered by the power of the display unit is switched from on to off, the course of the first hour And a process of attempting a wireless connection with the network later.

  According to the present invention, it is possible to efficiently connect to a network.

It is a perspective view which shows the external appearance of the smart phone which concerns on embodiment. It is a front view which shows the external appearance of the smart phone which concerns on embodiment. It is a rear view which shows the external appearance of the smart phone which concerns on embodiment. It is a figure which shows an example of a home screen. It is a block diagram which shows the function of the smart phone which concerns on embodiment. It is a figure which shows the example of the network entry accompanying the power supply of a touch screen display being turned on. It is a figure which shows the example of the network entry accompanying the search of the base station of WiMAX performed when the power supply of a touch screen display is OFF. It is a flowchart which shows the process in the smart phone which concerns on embodiment. It is a flowchart following FIG.

  Embodiments for carrying out the present invention will be described in detail with reference to the drawings. Below, a smart phone is demonstrated as an example of a communication apparatus provided with a touch screen display.

  The external appearance of the smartphone 1 according to the embodiment will be described with reference to FIGS. 1 to 3. As shown in FIGS. 1 to 3, the smartphone 1 has a housing 20. The housing 20 includes a front face 1A, a back face 1B, and side faces 1C1 to 1C4. The front face 1 </ b> A is the front of the housing 20. The back face 1 </ b> B is the back surface of the housing 20. The side faces 1C1 to 1C4 are side surfaces that connect the front face 1A and the back face 1B. Hereinafter, the side faces 1C1 to 1C4 may be collectively referred to as the side face 1C without specifying which face.

  The smartphone 1 includes a touch screen display 2, buttons 3A to 3C, an illuminance sensor 4, a proximity sensor 5, a receiver 7, a microphone 8, and a camera 12 on the front face 1A. The smartphone 1 has a camera 13 on the back face 1B. The smartphone 1 has buttons 3D to 3F and an external interface 14 on the side face 1C. Hereinafter, the buttons 3A to 3F may be collectively referred to as the button 3 without specifying which button.

  The touch screen display 2 includes a display 2A and a touch screen 2B. The display 2A includes a display device such as a liquid crystal display (Liquid Crystal Display), an organic EL panel (Organic Electro-Luminescence panel), or an inorganic EL panel (Inorganic Electro-Luminescence panel). The display 2A displays characters, images, symbols, graphics, and the like.

  The touch screen 2B detects contact of a finger, a stylus pen, or the like with respect to the touch screen display 2. The touch screen 2B can detect a position where a plurality of fingers, a stylus pen, or the like is in contact with the touch screen display 2.

  The detection method of the touch screen 2B may be any method such as a capacitance method, a resistive film method, a surface acoustic wave method (or an ultrasonic method), an infrared method, an electromagnetic induction method, and a load detection method. Hereinafter, for the sake of simplicity of explanation, a finger that the touch screen 2B detects contact with the touch screen display 2 or a stylus pen or the like may be simply referred to as “finger”.

  The smartphone 1 determines the type of gesture based on the contact, contact position, contact time, or number of contacts detected by the touch screen 2B. The gesture is an operation performed on the touch screen display 2. The gesture discriminated by the smartphone 1 includes touch, long touch, release, swipe, tap, double tap, long tap, drag, flick, pinch in, pinch out, and the like.

  A touch is a gesture in which a finger contacts the touch screen display 2 (for example, a surface). The smartphone 1 determines a gesture in which a finger contacts the touch screen display 2 as a touch. The long touch is a gesture in which a finger contacts the touch screen display 2 for a predetermined time or more. The smartphone 1 determines a gesture in which a finger contacts the touch screen display 2 for a predetermined time or more as a long touch.

  A release is a gesture in which a finger leaves the touch screen display 2. The smartphone 1 determines a gesture in which a finger leaves the touch screen display 2 as a release. The swipe is a gesture that moves while the finger is in contact with the touch screen display 2. The smartphone 1 determines a gesture that moves while the finger is in contact with the touch screen display 2 as a swipe.

  A tap is a gesture for releasing following a touch. The smartphone 1 determines a gesture for releasing following a touch as a tap. The double tap is a gesture in which a gesture for releasing following a touch is continued twice. The smartphone 1 determines a gesture in which a gesture for releasing following a touch is continued twice as a double tap.

  A long tap is a gesture for releasing following a long touch. The smartphone 1 determines a gesture for releasing following a long touch as a long tap. The drag is a gesture for performing a swipe from an area where a movable object is displayed. The smartphone 1 determines, as a drag, a gesture for performing a swipe starting from an area where a movable object is displayed.

  The flick is a gesture that is released while the finger moves at high speed in one direction following the touch. The smartphone 1 determines, as a flick, a gesture that is released while the finger moves in one direction at high speed following the touch. Flick: Up flick that moves your finger up the screen, Down flick that moves your finger down the screen, Right flick that moves your finger right in the screen, Left flick that moves your finger left in the screen Etc.

  Pinch-in is a gesture that swipes in a direction in which a plurality of fingers approach each other. The smartphone 1 determines, as a pinch-in, a gesture that swipes in a direction in which a plurality of fingers approach each other. Pinch-out is a gesture that swipes a plurality of fingers away from each other. The smartphone 1 determines a gesture of swiping in a direction in which a plurality of fingers move away from each other as a pinch out.

  The smartphone 1 operates according to these gestures that are determined via the touch screen 2B. Therefore, operability that is intuitive and easy to use for the user is realized. The operation performed by the smartphone 1 according to the determined gesture differs depending on the screen displayed on the touch screen display 2.

  An example of a screen displayed on the display 2A will be described with reference to FIG. FIG. 4 shows an example of the home screen. The home screen may be called a desktop or a standby screen. The home screen is displayed on the display 2A. The home screen is a screen that allows the user to select which application to execute from among the applications installed in the smartphone 1. The smartphone 1 executes the application selected on the home screen in the foreground. The screen of the application executed in the foreground is displayed on the display 2A.

  The smartphone 1 can place an icon on the home screen. A plurality of icons 50 are arranged on the home screen 40 shown in FIG. Each icon 50 is associated with an application installed in the smartphone 1 in advance. When the smartphone 1 detects a gesture for the icon 50, the smartphone 1 executes an application associated with the icon 50. For example, when the smartphone 1 detects a tap on the icon 50 associated with the mail application, the smartphone 1 executes the mail application. Here, for example, the smartphone 1 interprets a gesture to a position (area) corresponding to the display position (area) of the icon 50 on the touch screen display 2 as an execution instruction of an application associated with the icon 50. .

  The icon 50 includes an image and a character string. The icon 50 may include a symbol or a graphic instead of the image. The icon 50 may not include either an image or a character string. The icons 50 are arranged according to a predetermined rule. A wallpaper 41 is displayed behind the icon 50. The wallpaper is sometimes called a photo screen or a back screen. The smartphone 1 can use any image as the wallpaper 41. For example, an arbitrary image is determined as the wallpaper 41 according to the setting of the user.

  The smartphone 1 can increase or decrease the number of home screens. For example, the smartphone 1 determines the number of home screens according to the setting by the user. When the smartphone 1 displays the home screen, even if there are a plurality of home screens, the smartphone 1 displays one selected from them on the display 2A.

  The smartphone 1 displays one or more locators on the home screen. The number of locators matches the number of home screens. The locator indicates the position of the currently displayed home screen. The locator corresponding to the currently displayed home screen is displayed in a manner different from other locators.

  In the example shown in FIG. 4, four locators 51 are displayed. This indicates that the number of home screens 40 is four. In the example shown in FIG. 4, the second symbol from the left is displayed in a manner different from other symbols. This indicates that the second home screen from the left is currently displayed.

  When the smartphone 1 detects a specific gesture while displaying the home screen, the smartphone 1 switches the home screen displayed on the display 2A. For example, when detecting a right flick, the smartphone 1 switches the home screen displayed on the display 2A to the left home screen. Further, when the smartphone 1 detects a left flick, the smartphone 1 switches the home screen displayed on the display 2A to the right home screen.

  A region 42 is provided at the upper end of the display 2A. In the area 42, a remaining amount mark 43 indicating the remaining amount of the rechargeable battery and a radio wave level mark 44 indicating the electric field strength of the communication radio wave are displayed. The smartphone 1 may display the current time, weather information, the application being executed, the type of the communication system, the status of the phone, the mode of the device, the event that has occurred in the device, and the like in the area 42. As described above, the area 42 is used for various notifications to the user. The area 42 may be provided on a screen different from the home screen 40. The position where the region 42 is provided is not limited to the upper end of the display 2A.

  Note that the home screen 40 shown in FIG. 4 is an example, and the form of various elements, the arrangement of various elements, the number of home screens 40, the manner of various operations on the home screen 40, and the like are described above. It does not have to be street.

FIG. 5 is a block diagram illustrating the configuration of the smartphone 1.
The smartphone 1 includes a control unit 30, a first communication processing unit 31, a first antenna unit 32, a second communication processing unit 33, and a second antenna unit 34. The smartphone 1 includes other components such as a microphone in addition to the components described above.

  The first communication processing unit 31 performs wireless communication over the network of the first communication system. The second communication processing unit 33 performs wireless communication over the network of the second communication system. In the following, communication by the first communication processing unit 31 is also referred to as higher-order bearer communication because priority is set higher than communication by the second communication processing unit 33. Communication by the second communication processing unit 33 is also referred to as lower bearer communication.

  Hereinafter, it is assumed that the communication method of the first communication system conforms to IEEE 802.16, and the communication method of the second communication system conforms to the IMT-2000 standard. Specifically, the first communication system is WiMAX. The second communication system is CDMA (for example, CDMA2000_1x, W-CDMA, etc.).

  In this case, the smartphone 1 performs intermittent paging reception with CDMA, not only when WiMAX is lost and communicating with CDMA, but also with WiMAX. Broadcast information can be received.

  By the way, simultaneous distribution information such as earthquake early warning, tsunami warning, disaster / evacuation information, etc. is distributed to many communication devices all at once. When many pieces of communication equipment receive this simultaneous distribution information in a state where the display unit is turned off, the communication unit turns on the display unit and tries WiMAX base station search, authentication, and network entry.

  In addition, when an alarm is turned on while the display unit is turned off, many communication devices turn on the display unit and try WiMAX base station search, authentication, and network entry. Since alarms are often set at a specific time, such as 0 minutes or 30 minutes in the morning, similarly, a large number of communication devices may try authentication and network entry at the same time.

  However, the number of authentication servers and DHCP servers that are usually required only for authentication and network entry is smaller than the number of base stations. For this reason, if a large number of communication devices attempt authentication and network entry in response to simultaneous distribution information or alarms, the processing will be congested at each server, and authentication or network entry will fail, or the network will be down. there is a possibility.

  Therefore, when the session is disconnected while a WiMAX data communication session is established, the control unit 30 controls the first communication processing unit 31 to search for a WiMAX base station. Connect to the network efficiently. Hereinafter, processing for searching for a WiMAX base station by the control unit 30 will be described.

  When the wireless communication session is disconnected and the touch screen display 2 is powered on, the control unit 30 tries to connect to the network in wireless communication at a time interval equal to or less than the first time interval. When the power supply of No. 2 is in an off state, connection to the network is attempted at the first time interval.

  That is, when the power of the touch screen display 2 is on and the session is disconnected in a state where a data communication session by WiMAX is established, the control unit 30 until the authentication of the smartphone 1 with respect to WiMAX is successful. The authentication is tried at a time interval equal to or less than the first time interval. In addition, when the touch screen display 2 is turned off and the session is disconnected in a state where a data communication session using WiMAX is established, the control unit 30 continues to authenticate the smartphone 1 with respect to WiMAX. The authentication is tried at the first time interval.

Specific processing will be described below. First, a state where the power of the touch screen display 2 is turned on will be described.
When the WiMAX data communication session is disconnected while the power of the touch screen display 2 is on, the control unit 30 determines a second time interval shorter than the first time interval until the WiMAX base station is successfully searched. The WiMAX base station search is attempted by increasing the time interval step by step. Here, the first time is, for example, 30 minutes. The second time is n minutes (for example, 2 minutes). Further, increasing the time interval stepwise from the second time interval means, for example, increasing the time interval to 2 minutes, 4 minutes, 6 minutes,... 30 minutes.

  That is, when the data communication session by WiMAX is disconnected while the power of the touch screen display 2 is on, the control unit 30 stops the first communication processing unit 31 for two minutes, and then performs the first communication. The processing unit 31 is controlled to search for a WiMAX base station. When the WiMAX base station can be searched, the control unit 30 transmits the authentication information of the smartphone 1 to the authentication server via the base station and tries to authenticate the smartphone 1 with respect to WiMAX. The state where the first communication processing unit 31 is stopped is called a sleep state.

  When the authentication of the smartphone 1 for WiMAX is successful, the control unit 30 performs network entry for the network. That is, when the authentication is successful, the control unit 30 makes an IP address acquisition request to a DHCP (Dynamic Host Configuration Protocol) server existing on the network and performs a network entry. When the smartphone 1 can acquire its own IP address from the DHCP server, it is assumed that the network entry is successful.

  The control unit 30 stops the first communication processing unit 31 for two minutes when the WiMAX base station cannot be searched, when the authentication of the smartphone 1 is not successful, or when the network entry is not successful. After that, a search for a WiMAX base station, authentication of the smartphone 1 for WiMAX, and network entry are tried.

  After that, the control unit 30 stops the first communication processing unit 31 when the WiMAX base station cannot be searched, when the authentication of the smartphone 1 is not successful, or when the network entry is not successful. For 2 minutes. It should be noted that the time for stretching at one time is not limited to 2 minutes, and may be other time such as 5 minutes, 10 minutes or the like.

Here, in the state where the power of the touch screen display 2 is on, the maximum value of the time for stopping the first communication processing unit 31 is the first time, that is, 30 minutes. That is, the control unit 30 extends the time for stopping the first communication processing unit 31 to 30 minutes when the WiMAX base station cannot be searched or when the smartphone 1 is not successfully authenticated in 2 minutes. .
When the smartphone 1 establishes a WiMAX communication connection and a predetermined time has elapsed, the control unit 30 updates the search interval of the WiMAX base station to the second time, that is, 2 minutes.

Next, a state where the power of the touch screen display 2 is off will be described.
When the power of the touch screen display 2 is off and the session is disconnected in a state where a data communication session using WiMAX is established, the control unit 30 continues until the first authentication of the smartphone 1 with respect to WiMAX is successful. Try the authentication at time intervals. Here, the first time is 30 minutes as described above.

  Specifically, when the data communication session by WiMAX is disconnected while the power of the touch screen display 2 is turned off, the control unit 30 has an interval of 30 minutes until the search for the WiMAX base station is successful. Attempt to search for WiMAX base stations. When the WiMAX base station can be searched, the control unit 30 transmits the authentication information of the smartphone 1 to the authentication server via the base station, and tries to authenticate the smartphone 1 with respect to WiMAX. When the authentication of the smartphone 1 for WiMAX is successful, the control unit 30 performs network entry for the network.

  That is, when the WiMAX data communication session is disconnected while the touch screen display 2 is powered off, the control unit 30 always searches for WiMAX base stations and authenticates the smartphone 1 every 30 minutes. Try.

  Further, when the data communication session using WiMAX is disconnected (lost) while the power of the touch screen display 2 is off, the control unit 30 indicates that the power of the touch screen display 2 is turned on. In response to this, the search for the WiMAX base station is attempted, and authentication of the smartphone 1 and network entry are attempted.

  The touch screen display 2 is turned on when there is an operation input from the user, an incoming call such as voice or mail, firmware update confirmation, push communication, or activation of an application according to time. The push communication includes distribution information such as earthquake early warning, tsunami warning, disaster / evacuation information. Such distribution information is simultaneously distributed to a large number of communication devices including the smartphone 1. An event that occurs at a timing common to the plurality of devices is hereinafter referred to as a predetermined event.

  FIG. 6 is a diagram illustrating an example of a network entry associated with the touch screen display 2 being turned on from off.

  While the smartphone 1 is connected to WiMAX, the power of the touch screen display 2 is turned off at time t1, and then the WiMAX is lost and out of service at time t2. In this case, the smartphone 1 stops the first communication processing unit 31 for 30 minutes.

  At time t3 when 30 minutes have not elapsed since time t2, when the power of the touch screen display 2 is turned on due to a predetermined event or the like, the control unit 30 performs a network connection attempt when searching for a WiMAX base station. To establish a communication connection. Here, the network connection attempt specifically includes a search for a base station, authentication with a server in the network, and a network entry.

  FIG. 7 is a diagram illustrating an example of a network entry associated with a WiMAX base station search performed when the power of the touch screen display 2 is off.

  While the smartphone 1 was connected to WiMAX, the power of the touch screen display 2 was turned off at time t4 and lost WiMAX at time t5. In this case, the smartphone 1 stops the first communication processing unit 31 for 30 minutes.

  At time t6 when 30 minutes have elapsed from time t5, the smartphone 1 searches for a WiMAX base station. When the smartphone 1 can search for a WiMAX base station, the smartphone 1 starts authentication and network entry of the smartphone 1 and establishes a communication connection.

  When the power of the touch screen display 2 is turned on at a time t7 due to a predetermined event or the like, the control unit 30 performs authentication and network entry of the smartphone 1 at this point because a communication connection has already been established. Absent.

  When there are a plurality of smartphones 1, the timing at which the power of the touch screen display 2 is turned off in these smartphones 1 is different. And since these smart phones 1 perform self-authentication and network entry at intervals of 30 minutes, the access timing to each server is different. Further, even if the power of the touch screen display 2 is turned on due to a predetermined event, these smartphones 1 do not perform authentication and network entry if a communication connection is already established at this time. Is suppressed.

FIG. 8 is a flowchart showing a flow of processing according to the power state of the touch screen display 2 in the smartphone 1.
This process is executed when the power of the touch screen display 2 is turned on.

  In step S1, the control unit 30 determines whether or not the touch screen display 2 is powered on. If this determination is YES, the control unit 30 moves the process to step S2. When this determination is NO, the control unit 30 moves the process to step S9 in FIG.

  In step S2, the control unit 30 determines whether or not WiMAX is being lost. When this determination is YES, the control unit 30 moves the process to step S3. If this determination is NO, the controller 30 moves the process to step S1.

In step S3, the control unit 30 causes the first communication processing unit 31 to sleep.
In step S4, the control unit 30 determines whether or not the first communication processing unit 31 is caused to sleep for A. When this determination is YES, the control unit 30 moves the process to step S5. If this determination is NO, the controller 30 moves the process to step S1. Here, the initial value of A is assumed to be 2, but may be any other value as long as it is 30 minutes, that is, a value smaller than the first time.

In step S5, the control unit 30 searches for a WiMAX base station.
In step S6, the control unit 30 determines whether or not a WiMAX base station has been searched as a result of the search in step S5. When this determination is YES, the control unit 30 moves the process to step S7. If this determination is NO, the control unit 30 moves the process to step S8.

  In step S <b> 7, the control unit 30 accesses the authentication server and the DHCP server, and tries authentication of the smartphone 1 and network entry. If authentication or network entry fails in step S7, the control unit 30 may move the process to step S8. When these processes are completed, the control unit 30 ends the process of this flowchart.

  In step S8, the control unit 30 adds n to A. Here, n is an integer of 30 or less, and may be 2, for example. As a result, the interval until the next WiMAX base station is searched is extended by 2 minutes. In addition, the control part 30 does not add n to A, when A becomes 30 or more.

  The description is moved to FIG. In step S9, the control unit 30 determines whether or not the touch screen display 2 is powered on. If this determination is YES, the control unit 30 moves the process to step S1 in FIG. When this determination is NO, the control unit 30 moves the process to step S10.

  In step S10, the control unit 30 determines whether WiMAX is lost. When this determination is YES, the control unit 30 moves the process to step S11. If this determination is NO, the controller 30 moves the process to step S9.

  In step S11, the control unit 30 determines whether or not the touch screen display 2 is powered on. When this determination is YES, the control unit 30 moves the process to step S5 in FIG. When this determination is NO, the control unit 30 moves the process to step S12.

In step S12, the control unit 30 causes the first communication processing unit 31 to sleep.
In step S13, the control unit 30 determines whether or not the first communication processing unit 31 has been put to sleep for 30 minutes. When this determination is YES, the control unit 30 moves the process to step S14. If this determination is NO, the controller 30 moves the process to step S11.

In step S14, the control unit 30 searches for a WiMAX base station.
In step S15, the control unit 30 determines whether the WiMAX base station has been searched as a result of the search in step S14. When this determination is YES, the control unit 30 moves the process to step S16. If this determination is NO, the controller 30 moves the process to step S11.

  In step S <b> 16, the control unit 30 accesses the authentication server and the DHCP server, and tries authentication of the smartphone 1 and network entry. If authentication or network entry fails in step S16, the control unit 30 may move the process to step S11. When these processes are completed, the control unit 30 ends the process of this flowchart.

  As described above, according to the present embodiment, when the touch screen display 2 is turned on and the session is disconnected in a state where a data communication session using WiMAX is established, the smartphone 1 When the authentication of the smartphone 1 with respect to succeeds, the authentication is tried at a time interval equal to or less than the first time interval, and the data communication session by WiMAX is disconnected while the power of the touch screen display 2 is off. Until the authentication of the smartphone 1 for WiMAX is successful, the authentication is tried at intervals of the first time.

  In this way, the smartphone 1 performs authentication and network entry of the smartphone 1 at 30-minute intervals when the WiMAX data communication session is disconnected while the touch screen display is powered off. Therefore, when the touch screen display 2 is turned on due to push communication, alarms, or the like that are simultaneously distributed to a large number of communication devices, the smartphone 1 can be used as an authentication server when authentication has already been completed. It is not accessed. Therefore, the smartphone 1 can reduce a sudden load on the network due to push communication or an alarm, and can efficiently connect to the network.

  Furthermore, when the authentication is successful, the smartphone 1 performs a network entry for the network. Therefore, since the smartphone 1 has completed the network entry in the state where the power of the touch screen display 2 is off, access to the DHCP server is not performed at this time. Therefore, the smartphone 1 can reduce a sudden load on the network due to push communication or an alarm, and can more efficiently connect to the network.

  In addition, when the WiMAX data communication session is disconnected while the touch screen display 2 is powered on, the smartphone 1 is gradually stepped from an interval shorter than 30 minutes until the WiMAX base station is successfully searched. Attempts to search for WiMAX base stations with increasing time intervals. In addition, the smartphone 1 always tries to search for a WiMAX base station at intervals of 30 minutes in a state where the power of the touch screen display 2 is on.

  As described above, the smartphone 1 shortens the WiMAX base station search interval when the touch screen display 2 that is considered to be used by the user is powered on. In addition, the smartphone 1 keeps searching for WiMAX base stations to a minimum when the power of the touch screen display 2 that is considered not to be used by the user is turned off. The smartphone 1 can maintain convenience in a state where the power of the touch screen display 2 is on, and can suppress a load on the network when the power of the touch screen display 2 is switched from off to on.

  As mentioned above, although embodiment of this invention was described, this invention is not restricted to embodiment mentioned above. Further, the effects described in the embodiments of the present invention only list the most preferable effects resulting from the present invention, and the effects of the present invention are not limited to those described in the above-described embodiments. Absent.

  In the above-described embodiment, when the data communication session by WiMAX is disconnected while the power of the touch screen display 2 is turned off, the authentication is performed at intervals of the first time until the smartphone 1 is successfully authenticated to WiMAX. However, the present invention is not limited to this. For example, when the session is disconnected when the data communication by WiMAX is idle while the power of the touch screen display 2 is off, the smartphone 1 tries the authentication at intervals of the first time. Good. In addition, the smartphone 1 tries the authentication at a time interval equal to or less than the first time interval when the session is disconnected when data communication by WiMAX is performed in a state where the power of the touch screen display 2 is off. You may do it.

  In the above-described embodiment, the smartphone 1 has been described as supporting WiMAX and CDMA. However, the present invention is not limited to this, and the upper bearer or the lower bearer may be another wireless communication system, or the smartphone. 1 may correspond to three or more wireless communication systems.

  Moreover, although the above-mentioned embodiment demonstrated the smart phone 1 as an example of a communication apparatus, the communication apparatus of this invention is not limited to a smart phone. For example, the communication device may be a mobile phone, a portable personal computer, a digital camera, a media player, an electronic book reader, a portable electronic device such as a navigator or a game machine, or a communication-dedicated module specialized for a communication function. The communication device may be a stationary electronic device such as a desktop personal computer or a television receiver.

  In the above-described embodiment, when the touch screen display 2 is powered on and the session is disconnected in a state where a data communication session using WiMAX is established, the control unit 30 of the smartphone 1 corresponding to WiMAX The authentication is tried at a time interval equal to or shorter than the first time interval until the authentication is successful, but the present invention is not limited to this. When the touch screen display 2 is turned off and the session is disconnected in a state where a data communication session using WiMAX is established, the control unit 30 waits for the first time until the smartphone 1 is successfully authenticated for WiMAX. It is good also as trying the said authentication by the time interval below an interval. Further, the control unit 30 succeeds in authenticating the smartphone 1 with respect to WiMAX when the power of the touch screen display 2 is turned off after the session is disconnected in a state where the data communication session by WiMAX is established. Until this time, the authentication may be attempted at a time interval equal to or shorter than the first time interval.

1 Smartphone (communication equipment)
2 Touch screen display (display unit)
30 control unit 31 first communication processing unit (communication unit)

Claims (4)

A display unit;
A communication unit that performs wireless communication via a wireless connection with a network ;
In a state where the wireless connection to the network is disconnected, wherein when the power source of the display unit of the on-the attempt a wireless connection with the network at intervals shorter second time than the first time, the display If the power supply parts is off and a control unit to attempt a wireless connection with the network at intervals of the first time,
The control unit establishes a wireless connection with the network after the elapse of the first time when the power of the display unit is switched from on to off in a state where the wireless connection with the network is disconnected. Communication device to try . Wherein, in a state where the wireless connection with the network is disconnected, it attempts to authenticate to the network, if successful in the authentication, perform network entry to the network,
The communication apparatus according to claim 1. When the wireless connection with the network is disconnected and the display unit is powered on, the control unit attempts to establish a wireless connection with the network after the second time elapses, and wirelessly communicates with the network. If the connection fails, a wireless connection with the network is attempted after a lapse of a third time that is less than the first time and greater than the second time .
The communication device according to claim 1 or 2. A processor that controls a communication device including a display unit and a communication unit that performs wireless communication via a wireless connection with a network ,
In a state where the wireless connection to the network is disconnected, the case the power supply of the display is on, the attempt a wireless connection with the network at intervals shorter than the first time second time, the display unit If power is off in the process of trying to wirelessly connect to the network at intervals of the first time,
In a state where the wireless connection with the network is disconnected, the process of trying to establish a wireless connection with the network after the lapse of the first time, triggered by the power of the display unit being switched from on to off, Processor to run .

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