JP2018110351A - Radio terminal and control method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a radio terminal which allows a user to use a radio terminal comfortably even after a replacement of an information card such as a SIM card is attached to the radio terminal, and a control method thereof.SOLUTION: A radio terminal 10 arranged so that a SIM card with setting information recorded therein, which is required for wireless communication, can be inserted thereinto and taken out therefrom comprises: a memory 18 storing setting information; wireless communication units 11 and 21 which perform wireless communication based on the setting information stored in the memory 18; and a communication processing unit 14 which overwrites the setting information in the memory 18 with the setting information recorded in the SIM card and then performs wireless communication when an event that needs wireless communication occurs on condition that a content of the setting information recorded in the SIM card put therein is different from that of the setting information stored in the memory 18.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a wireless terminal using an information card such as a SIM card and a control method thereof.

  In recent mobile communication networks, IMS (IP Multimedia Subsystem) defined by 3GPP (3rd Generation Partnership Project) has been introduced. In IMS, SIP (Session Initiation Protocol) defined by IETF (Internet Engineering Task Force) is adopted as a protocol for session control for starting and disconnecting voice communication (see, for example, Patent Document 1).

  LTE (Long Term Evolution) is widely used as a fourth generation mobile communication system. A plurality of communication providers provide a VoLTE (Voice over LTE) service for performing voice IP communication on LTE.

  On the other hand, when receiving such a service, a SIM card (Subscriber Identity Module Card) or UIM (User Identity Module) card (hereinafter simply referred to as a SIM card) corresponding to the service is replaced with a wireless terminal. It may be necessary to wear it. The SIM card is an IC card that stores contractor (user) information of a wireless terminal.

Japanese Patent Laying-Open No. 2015-037275

  The present invention provides a wireless terminal that allows a user to comfortably use a wireless terminal even when an information card such as a SIM card is replaced and attached to the wireless terminal, and a control method thereof.

  The wireless terminal of the present application is a wireless terminal capable of taking in and taking out an information card in which setting information necessary for wireless communication is recorded, and a memory for storing the setting information and a setting stored in the memory An event for requesting wireless communication when the wireless communication unit that performs wireless communication based on information and the content of the setting information recorded in the captured information card are different from the content of the setting information stored in the memory A communication processing unit that performs wireless communication after rewriting the setting information in the memory to the setting information recorded on the information card.

  The present invention provides a wireless terminal that allows a user to comfortably use a wireless terminal even when an information card such as a SIM card is replaced and attached to the wireless terminal, and a control method thereof.

It is a figure which shows the radio | wireless communications system which concerns on this Embodiment. It is a block diagram of the radio | wireless terminal which concerns on a present Example. It is a sequence diagram between the blocks of the radio | wireless terminal which concerns on a present Example. It is a flowchart which shows operation | movement of the radio | wireless terminal which concerns on a present Example. It is a flowchart which shows operation | movement of the radio | wireless terminal which concerns on a present Example. It is a flowchart which shows operation | movement of the radio | wireless terminal which concerns on a present Example.

  Hereinafter, the present embodiment will be described with reference to the drawings.

  FIG. 1 is a configuration diagram of a radio communication system according to the present embodiment. The wireless communication system illustrated in FIG. 1 includes a wireless terminal 10, a wireless terminal 9, a network 8A, a network 8B, a base station 4A, a base station 4B, and a base station 3A.

  The base station 3A, the base station 4A, and the network 8A are provided by the communication carrier A, and the base station 4B and the network 8B are provided by the communication carrier B. Hereinafter, when the base station 4 or the network 8 is described without distinction, the base station 4 or the network 8 is simply referred to. This is described as 8B.

  The base station 4 is a base station compatible with the fourth generation mobile communication system, and the base station 3 is a base station compatible with the third generation mobile communication system.

  The wireless terminal 10 and the wireless terminal 9 are, for example, a smartphone, a tablet, or a mobile phone. The wireless terminal 10 and the wireless terminal 9 may be wireless communication devices such as communication modules.

  FIG. 2 is a block diagram of the wireless terminal according to the present embodiment. The wireless terminal 10 includes a wireless communication unit 11, an operation input unit 15A, a display unit 15B, a voice input / output unit 15C, a control unit 16, an OS (Operating System) 17, a memory 18, a battery 19, a card drive unit 20, and a wireless A communication unit 21 is included. In the present embodiment, the wireless terminal 10 is described as a configuration such as a smartphone or a mobile phone, but is not particularly limited to such a configuration. The wireless terminal 10 may be a wireless communication device such as a communication module.

  The block of the wireless terminal 10 shown in FIG. 2 is a simple illustration of an actual product, and various electronic devices such as a module that implements GPS communication, wireless LAN, short-range communication, sensor communication, or an acceleration sensor. Although components may be mounted, they are omitted in this embodiment.

  The wireless communication unit 11 and the wireless communication unit 21 are configured to perform wireless communication with a wireless wide area network (WWAN). For example, the wireless communication unit 11 is compatible with a fourth generation mobile communication system, and the wireless communication unit 21 is compatible with a third generation mobile communication system.

  The radio communication unit 11 includes a transmission unit 12, a reception unit 13, and a communication processing unit 14, and transmits and receives radio signals from an antenna (not shown in FIG. 2) for communicating with the base station 4. . For example, the wireless communication unit 11 performs LTE wireless communication.

  The transmission unit 12 encodes and modulates data output from the control unit 16, and transmits the modulated data to the base station 4 as a radio signal. When receiving a radio signal from the base station 4, the receiving unit 13 outputs a demodulated / decoded signal to the control unit 16 as data.

  The communication processing unit 14 is mainly for realizing the IMS, and controls the wireless communication unit 11 to execute processing necessary for connection to the base station and various services. Yes.

  The wireless communication unit 21 has the same configuration as the wireless communication unit 11, but the wireless communication unit 21 performs CDMA wireless communication. Although there are a plurality of types of communication methods in the CDMA method, the wireless communication unit 21 may perform any method of wireless communication.

  The operation input unit 15A is configured by a touch panel or the like, and inputs a command operated by a user. The display unit 15B is a display such as a touch panel. The voice input / output unit 15 </ b> C is a microphone that collects voice mainly required for a call and a speaker that outputs voice.

  The control unit 16 is a controller that controls electronic components mounted on the wireless terminal 10. For example, a CPU (Central Processing Unit) that executes a program, a ROM (Read Only Memory), a RAM (Random Access Memory), a backup RAM, The microcomputer is mainly composed of I / O (Input / Output) or the like.

  The OS 17 is software that implements the basic functions of a computer, and the software is executed by the control unit 16. The OS 17 is a software for managing the entire system that can be used in common with functions for basic management and control of electronic components mounted on the wireless terminal 10 and a lot of software.

  The memory 18 stores programs and information necessary for controlling the wireless terminal 10. For example, the memory 18 is configured by a non-volatile memory, a flash memory, an EEPROM (Electronically Erasable and Programmable Read Only Memory), or the like. The memory 18 is simply illustrated as one block, but may be configured by a plurality of storage media as described above.

  The memory 18 stores setting information necessary for performing wireless communication. For example, the setting information includes information for connecting to a base station corresponding to the communication carrier. The memory 18 stores various setting information such as information for registering location information and information regarding a telephone number in order to receive a VoLTE service. For example, the wireless communication units 11 and 21 perform wireless communication based on setting information stored in the memory 18. For example, the wireless communication units 11 and 21 connect to a base station and execute processing for receiving a service such as VoLTE.

  The battery 19 is a rechargeable battery, for example, and supplies power to each electronic component mounted on the wireless terminal 10.

  The card driving unit 20 drives an IC card called an SIM card (or UIM card), that is, an information card. The card drive unit 20 can take in and take out the SIM card. When receiving or reading setting information from the communication processing unit 14 or the OS 17, the card driving unit 20 reads the setting information recorded on the SIM card and writes it to the SIM card.

  The SIM card is an IC card in which information for identifying a subscriber, carrier identification information for identifying a communication carrier, information on available services with which the subscriber is subscribed, and the like are recorded.

  The SIM card is mainly supplied from a telecommunications carrier. The user of the wireless terminal 10 may use the SIM card of the carrier B from the SIM card of the carrier A. At that time, the user replaces the SIM card of the carrier A with the SIM card of the carrier B and attaches it to the wireless terminal 10.

  In addition, when the user changes a part of the service provided from the carrier A and uses the changed service, the user may replace the SIM card corresponding to the service. Services may be added, deleted or changed.

  The SIM card stores setting information necessary for receiving services. For example, in order to receive a VoLTE service, there are various setting information such as information for registering location information and information regarding a telephone number. These pieces of information are transmitted to the SIP server (SIP compliant server) on the network through the REGSTER method and the INVITE method.

  The communication processing unit 14 is recorded in the SIM card when the SIM card is inserted (taken in), when the wireless terminal 10 is activated, or when communication is resumed (for example, when the airplane mode is set from OFF to ON). The setting information is read and written into the memory 18.

  In addition, the OS 17 executes a connection with the base station and instructions required from various applications. For example, the OS 17 instructs the communication processing unit 14 to connect to the base station when the SIM card is inserted, when the wireless terminal 10 is activated, when communication is resumed, or when returning from the outside of the communication area. It has become. For example, when making a call using VoLTE or the like, the OS 17 instructs the communication processing unit 14 to give an instruction requested from an application for VoLTE.

  When the OS 17 executes an instruction requested by the application, setting information (for example, operator identification information) necessary for the instruction exists in the memory 18, and the communication processing unit 14 receives the setting information based on the setting information. May order.

  The communication processing unit 14 has been described as being executed by the wireless communication unit 11 as a part of the wireless communication unit 11, but may exist as a part of the OS 17 or may be executed by the control unit 16. .

  FIG. 3 is a sequence diagram between blocks of the wireless terminal according to the present embodiment.

  When the SIM card is inserted or when the wireless terminal 10 is activated (for example, when the power is turned on), a SIM card insertion notification is output to the communication processing unit 14 (step S1). On the other hand, a SIM card insertion notification is output to the OS 17 (step S2). Steps S1 and S2 are executed at the same time.

  When the OS 17 receives the SIM card insertion notification, the OS 17 performs processing according to the state of the wireless terminal 10. At this time, a base station connection request for connecting to a base station corresponding to the SIM card is output from the OS 17 to the communication processing unit 14 (step S3). Although the base station connection request has been described as an example, the present invention is not limited to the base station connection request, and any event that requests wireless communication may be used.

  FIG. 4 is a flowchart illustrating the operation of the wireless terminal according to the present embodiment. Specifically, it is a flowchart showing the operation of the communication processing unit 14 following step S3 of FIG.

  When a base station connection request for connecting to a base station corresponding to the SIM card is output from the OS 17 to the communication processing unit 14 in step S3 of FIG. 3 (step S31), the communication processing unit 14 It is recognized that a connection request has been output (step S32). For example, the communication processing unit 14 turns on a flag indicating that a base station connection request has been output.

  In step S32, the base station connection is not executed. For example, before the user replaces the SIM card of the communication carrier A with the SIM card of the communication carrier B and attaches it to the wireless terminal 10, the setting information corresponding to the communication carrier A is stored in the memory 18. Yes. When the SIM card corresponding to the communication carrier B is replaced and the setting information corresponding to the communication carrier A is recorded, the communication processing unit 14 connects to the base station corresponding to the communication carrier A. Therefore, in step S32, the base station connection is not executed.

  FIG. 5 is a flowchart illustrating the operation of the wireless terminal according to the present embodiment. Specifically, it is a flowchart showing the operation of the communication processing unit 14 following step S1 of FIG.

  When a SIM card insertion notification is output to the communication processing unit 14 in step S1 of FIG. 3 (step S11), the communication processing unit 14 reads the setting information recorded in the SIM card and records it in the memory 18. The set information is read (step S12).

  When the business entity identification information recorded on the SIM card matches the business entity identification information recorded on the memory 18 (yes in step S13), the process ends. If the provider identification information does not match (no in step S13), the communication processing unit 14 checks whether a base station connection request is output from the OS 17 (step S14).

  For example, the case where the operator identification information does not match is assumed when a SIM card different from the SIM card used immediately before is replaced. The case where the operator identification information matches is assumed when the user replaces the same SIM card.

  When the base station connection request is not output (no in step S14), the communication processing unit 14 waits for the base station connection request, and when the base station connection request is output (yes in step S14), the communication processing unit. 14 writes the setting information recorded in the SIM card into the memory 18 and executes a process of connecting to a new base station corresponding to the SIM card (step S15).

  For example, before the user replaces the SIM card of the communication carrier A with the SIM card of the communication carrier B and attaches it to the wireless terminal 10, the setting information corresponding to the communication carrier A is stored in the memory 18. Yes. When a SIM card corresponding to the communication carrier B is replaced, the setting information corresponding to the communication carrier B is rewritten in the memory 18 and then, for example, the wireless communication units 11 and 21 are restarted to perform communication processing. Since the unit 14 executes processing for connecting to the base station corresponding to the communication carrier B, the unit 14 does not execute connection to the base station corresponding to the communication carrier A.

  As described above, even if the user replaces the SIM card and attaches it to the wireless terminal 10, the wireless terminal 10 is connected to an appropriate base station, so that the user can comfortably use the wireless terminal 10.

  FIG. 6 is a flowchart illustrating the operation of the wireless terminal according to the present embodiment. The same operations as those in the flowchart described with reference to FIG. This flowchart is a flowchart in the case where the business operator identification information recorded in the SIM card matches.

  If the business operator identification information recorded in the SIM card matches the business operator identification information recorded in the memory 18 (yes in step S13), the communication processing unit 14 executes step S20.

  In step S20, if the service content recorded in the SIM card matches the service content recorded in the memory 18, the process ends. For example, various cases are assumed such that the service recorded in the SIM card includes VoLTE and the service recorded in the memory 18 does not include VoLTE.

  In step S20, when the service content recorded in the SIM card and the service content recorded in the memory 18 do not match, the communication processing unit 14 checks whether a base station connection request is output from the OS 17 or not. (Step S14). The subsequent operations are the same as those in the flowchart described with reference to FIG.

  For example, before the user replaces the SIM card (without VoLTE) of the communication carrier A with the SIM card (with VoLTE) of the communication carrier A and attaches it to the wireless terminal 10, the memory 18 stores the communication carrier A. Corresponding setting information (no VoLTE) is stored. When the SIM card (with VoLTE) of the communication carrier A is replaced, the communication processing unit 14 rewrites the setting information of the SIM card (with VoLTE) of the communication carrier A into the memory 18, for example, wireless communication In order to execute processing to connect to the base station by restarting the units 11 and 21, setting information such as a telephone number for receiving a VoLTE service is transmitted to a server or base station on a SIP-compliant network can do.

  When the user uses VoLTE, the setting information before rewriting to the memory 18 is executed in order to execute processing for connecting to the base station after rewriting the setting information of the SIM card (with VoLTE) of the carrier A to the memory 18 There is no risk of problems such as connecting to a base station with information.

  As described above, even if the user replaces the SIM card and attaches it to the wireless terminal 10, the wireless terminal 10 appropriately performs the operation of using the service, so that the user can comfortably use the wireless terminal 10. it can.

3, 4 Base station 8 Network 9, 10 Wireless terminal 11, 21 Wireless communication unit 12 Transmission unit 13 Reception unit 14 Communication processing unit 15A Operation input unit 15B Display unit 15C Voice input / output unit 16 Control unit 17 OS
18 Memory 19 Battery 20 Card drive unit

Claims (7)

In a wireless terminal that can take in and take out an information card on which setting information necessary for wireless communication is recorded,
A memory for storing the setting information;
A wireless communication unit that performs wireless communication based on setting information stored in the memory;
When the content of the setting information recorded in the captured information card is different from the content of the setting information stored in the memory, the setting recorded in the information card when there is an event requesting wireless communication A wireless terminal comprising: a communication processing unit that performs wireless communication after rewriting the setting information of the memory in information. The wireless terminal according to claim 1,
The content of the setting information includes carrier specifying information for specifying a communication carrier,
When the provider specifying information of each setting information is different and there is an event requesting wireless communication, the communication processing unit rewrites the setting information in the memory to the setting information recorded in the information card. A wireless terminal that performs wireless communication. The wireless terminal according to claim 2,
The content of the setting information includes information about the service,
When there is an event for requesting wireless communication when the information regarding the service of each setting information is different, the communication processing unit rewrites the setting information in the memory to the setting information recorded in the information card. To a wireless terminal that performs wireless communication. The wireless terminal according to claim 1,
When the information card is captured by the wireless terminal, the communication processing unit, when the content of the setting information recorded in the captured information card is different from the content of the setting information stored in the memory, A wireless terminal that performs wireless communication after rewriting the setting information in the memory to the setting information recorded in the information card when there is an event requesting wireless communication. The wireless terminal according to claim 1,
When the wireless terminal is activated, the communication processing unit requests an event for requesting wireless communication when the content of the setting information recorded in the captured information card is different from the content of the setting information stored in the memory. When there is, a wireless terminal that performs wireless communication after rewriting the setting information in the memory to the setting information recorded on the information card. The wireless terminal according to claim 1,
When communication of the wireless terminal is resumed, the communication processing unit requests wireless communication when the content of the setting information recorded in the captured information card is different from the content of the setting information stored in the memory When there is an event, a wireless terminal that performs wireless communication after rewriting the setting information in the memory to the setting information recorded on the information card. In a control method of a wireless terminal capable of taking in and taking out an information card in which setting information necessary for wireless communication is recorded,
A memory for storing the setting information;
In a method of controlling a wireless terminal comprising a wireless communication unit that performs wireless communication based on setting information stored in the memory,
When the content of the setting information recorded in the captured information card is different from the content of the setting information stored in the memory, the setting recorded in the information card when there is an event requesting wireless communication A method of controlling a wireless terminal that performs wireless communication after rewriting the setting information of the memory in information.

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