JP2006121334A - Information communication terminal and communication management system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an information communication terminal and a mobile communication system by which the information communication terminal can be shared among a plurality of users, and also, a plurality of pieces of subscriber identification information can be utilized for communication by appropriately using them without providing a plurality of interface means composed so as to allow a storage medium storing the subscriber identification information to be attached/detached. <P>SOLUTION: The information communication terminal (a portable telephone) 10 has a wireless communication part 113, a USIM card I/F device 121, and a control unit 111. A USIM card 122 can be attached/detached to/from the USIM card I/F device 121. The USIM card I/F device 121 executes input/output of data to the USIM card 122. The USIM card 122 stores a plurality of mutually different subscriber identification information. The control unit 111 reads out the subscriber identification information from the USIM card 122, and controls the wireless communication part 113 so as to execute communication via a portable telephone communication network 20 on the basis of the read-out subscriber identification information. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an information communication terminal such as a mobile phone that can use communication via a communication network based on each of a plurality of subscriber identification information, and a communication management system that manages communication by the information communication terminal. is there.

Conventionally, in this type of information communication terminal such as a mobile phone, subscriber identification information (for example, a telephone number) necessary for communication via a communication network is assigned to each information communication terminal. The allocated subscriber identification information is stored in an internal memory as an internal storage unit of the information communication terminal or a SIM (Subscriber Identity Module) card as a removable storage medium, and communicates via a communication network. Used for processing such as location registration, authentication, and accounting.
However, recently, with the diversification of usage forms of information communication terminals, there is a demand for communication by switching a plurality of subscriber identification information with one information communication terminal. For example, to communicate with the phone using business subscriber identification information used for work at the company and to use personal identification information for personal use other than work, There is a case where it is desired to switch a plurality of subscriber identification information with one information communication terminal for communication.
Conventionally, the following information communication terminals are known as information communication terminals that can communicate by switching a plurality of subscriber identification information. For example, Patent Document 1 discloses an information communication terminal capable of registering a plurality of subscriber identification information (telephone numbers) in an information communication terminal main body. Patent Document 2 discloses an information communication terminal (portable terminal) in which a plurality of SIM (Subscriber Identity Module) cards serving as subscriber identification storage media storing different subscriber identification information are simultaneously mounted. . In this information communication terminal, subscriber identification information is read from one SIM card selected from a plurality of SIM cards, and communication is performed based on the read subscriber identification information.
JP 2003-189013 A JP 2002-095038 A

However, in the information communication terminal described in Patent Document 1, since a plurality of subscriber identification information is stored in the internal memory, it is difficult to use one information communication terminal among a plurality of users. There was a point.
In addition, in the information communication terminal described in Patent Document 2, in order for one user to use a plurality of subscriber identification information for business and personal use for communication, a SIM storing the subscriber identification information is used. There is a problem that it is necessary to provide a plurality of interface means to / from which a card (storage medium) can be attached / detached.

  The present invention has been made in view of the above problems. Its purpose is to share information communication terminals among multiple users, and to use multiple subscriber identification information for communication without providing multiple interface means for detachable storage media storing subscriber identification information. An information communication terminal and a mobile communication system are provided.

In order to achieve the above object, an invention according to claim 1 is an information communication terminal capable of utilizing communication via a communication network based on each of a plurality of different subscriber identification information, wherein the communication network Communication means for performing communication via communication, interface means for detachable storage medium to input / output data to / from the storage medium, and control means for controlling communication by the communication means based on subscriber identification information The storage medium stores a plurality of different subscriber identification information, and the control means reads the subscriber identification information from the storage medium, and passes the communication network based on the read subscriber identification information. The communication means is controlled so as to perform communication.
In this information communication terminal, a plurality of different subscriber identification information is stored in a storage medium attached to the interface means. When using a plurality of subscriber identification information stored in the storage medium, the control means reads one of the subscriber identification information from the storage medium, and sets the communication network based on the read subscriber identification information. The communication means is controlled so as to perform communication via the network. In this way, any one of the plurality of subscriber identification information can be read from the storage medium, and communication via the communication network can be performed.
When the subscriber identification information stored in the storage medium of the information communication terminal is used in another information communication terminal, the storage medium is removed from the interface means, and the storage medium is attached to the other information communication terminal. . Further, when another user uses the information communication terminal from which the storage medium has been removed, a storage medium storing the subscriber identification information of the other user is attached to the interface means of the information communication terminal. Thus, the other user can use it for communication.
In addition, since the plurality of subscriber identification information can be stored in a single storage medium and the storage medium can be used by being attached to an information communication terminal, in order to simultaneously use the plurality of subscriber identification information in the information communication terminal, There is no need to provide a plurality of interface means to / from which a storage medium for storing subscriber identification information can be attached / detached.

According to a second aspect of the present invention, in the information communication terminal of the first aspect, in the information communication terminal of the first aspect, the storage medium includes a CPU and a memory in which the plurality of subscriber identification information are stored. It is an IC card.
In this information communication terminal, by using an IC card with a built-in CPU as the storage medium, encryption processing when storing private information, personal identification information for credit settlement, etc., authentication processing when reading subscriber identification information Such advanced information processing can be performed in the storage medium.

The invention of claim 3 is the information communication terminal of claim 1 or 2, wherein the storage medium stores communication partner information used for communication based on the subscriber identification information for each of the subscriber identification information. It is characterized by that.
In this information communication terminal, communication partner information to be communicated based on the subscriber identification information is stored for each subscriber identification information, so that communication is performed relatively frequently for each subscriber identification information. Even when the other party is different, it is easy to set the communication partner at the start of communication.
The communication partner information may be stored in a storage medium in which the subscriber identification information is stored, or an internal storage means provided in the information communication terminal or a general-purpose device detachable from the information communication terminal. You may preserve | save on an IC card or a memory card.

According to a fourth aspect of the present invention, there is provided the information communication terminal according to any one of the first to third aspects, wherein the upper storage medium performs communication based on the subscriber identification information for each of the subscriber identification information. Information is preserved.
In this information communication terminal, communication history information for communication based on the subscriber identification information is stored for each subscriber identification information, so the communication history information is read and displayed for each subscriber identification information. Etc. can be performed.
The communication history information may be stored in a storage medium storing the subscriber identification information, or an internal storage means provided in the information communication terminal or a general-purpose IC that can be attached to and detached from the information communication terminal. You may save it on a card.

The invention according to claim 5 is the information communication terminal according to any one of claims 1 to 4, further comprising authentication information input means for a user to input authentication information, wherein the storage medium includes the subscriber identification information. Authentication information for reading is stored, and the control means, when starting to use the subscriber identification information, the authentication information input by the user in the authentication information input means and the subscriber identification to be used The use of the subscriber identification information is controlled by judging whether or not the subscriber identification information can be used based on the verification authentication information read from the storage medium in which the information is stored. It is.
In this information communication terminal, the subscriber identification information is read from the storage medium as follows. At the start of use of subscriber identification information, the user operates authentication information input means to input authentication information for reading subscriber identification information. The control means, based on the authentication information input by the user by the authentication information input means and the verification authentication information read from the storage medium storing the subscriber identification information to be used, the subscriber identification information Judge whether or not to use. Here, when it is determined that the subscriber identification information is usable, the subscriber identification information is read out and used for control. On the other hand, when it is determined that the subscriber identification information cannot be used, the subscriber identification information is not read out or the subscriber identification information is used by prohibiting the use of the read subscriber identification information. I can't do it.
The “authentication information” input when reading the subscriber identification information is not only character information such as numbers, alphabets, kana and kanji, but also image information such as the user's face and fingerprints and user's voice information. Good.

According to a sixth aspect of the present invention, in the information communication terminal according to any one of the first to fifth aspects, the user specifies subscriber identification information to be used when transmitting at least one of the plurality of subscriber identification information. The control means controls the communication so as to make a call at least based on the subscriber identification information specified by the user with the specification operation means.
In this mobile communication terminal, the user can operate the designation operation means to designate desired subscriber identification information to be used at the time of transmitting at least among the plurality of subscriber identification information. The control means controls the communication so that at least the transmission is performed based on the subscriber identification information designated by the user by the designation operation means. Thus, it is possible to receive a communication service including at least transmission based on subscriber identification information specifically according to the user's wishes.
The target that can be specified by the specifying operation means may be only transmission of a telephone or mail from the information communication terminal, may be both transmission and reception of a telephone or mail, or other communication services.

The invention according to claim 7 is the information communication terminal according to any one of claims 1 to 6, wherein the storage medium is an IMT-2000 including a W-CDMA (Wideband Code Division Multiple Access) communication method and a cdma2000 communication method. It is a subscriber identification IC card that can be used by being mounted on a mobile communication terminal that performs communication using a communication system conforming to International Mobile Telecommunication 2000).
In this case, the subscriber identification IC card is inserted between the mobile communication terminals conforming to IMT-2000, such as between the mobile communication terminal using the W-CDMA communication system and the mobile communication terminal using the cdma2000 communication system. Can share.

The invention of claim 8 is a communication management system for managing communication by the information communication terminal according to any one of claims 1 to 6, wherein the information is based on subscriber identification information received from the information communication terminal. Location information registration means for registering location information of a communication terminal, subscriber information storage means for storing subscriber information, subscriber identification information received from the information communication terminal, and subscriber read from the subscriber information storage means And an authentication unit that performs authentication for communication use by the information communication terminal based on the information.
In this mobile communication system, processing for communication via a communication network as described below is performed based on subscriber identification information received from an information communication terminal. The location information registration means grasps the location of the information communication terminal using the subscriber identification information by registering the location information of the information communication terminal based on the subscriber identification information received from the information communication terminal. To enable communication via a communication network. The authentication means is for communication use by the information communication terminal using the subscriber identification information based on the subscriber identification information received from the information communication terminal and the subscriber information read from the subscriber information storage means. Authentication to ensure proper communication over the communication network and avoid unauthorized use. As described above, when communication is performed via a communication network by switching a plurality of different subscriber identification information in the information communication terminal, registration and authentication of location information can be appropriately performed for each subscriber identification information. it can.

The “information communication terminal” is a mobile phone such as PDC (Personal Digital Cellular) method, GSM (Global System for Mobile Communication) method, TIA (Telecommunications Industry Association) method, or IMT (International Mobile Telecommunications) -2000. Standardized mobile phone, TD-SCDMA (MC: Multi Carrier) mobile phone, one of TD-SCDMA (Time Division Synchronous Code Division Multiple Access), PHS (Personal Handyphone System), automobile phone, fixed phone A telephone having a telephone call function such as Examples of the “information communication terminal” include a communication terminal such as a PDA (Personal Digital Assistance) having a call function in addition to the above telephone. In particular, the present invention is suitable for a mobile communication terminal that performs communication using a communication system compliant with IMT-2000 (International Mobile Telecommunication 2000) including a W-CDMA (Wideband Code Division Multiple Access) communication system and a cdma2000 communication system. .
Control and information processing in the information communication terminal and the communication management system can also be realized by executing a predetermined program on a computer provided in the information communication terminal and the communication management system. Delivery of the program used in the computer may be performed using a recording medium such as an FD or CD-ROM in which the program is recorded as digital information, or may be performed using a communication network such as a computer network.

According to the first to eighth aspects of the present invention, a storage medium storing subscriber identification information is removed from the information communication terminal, and a storage medium storing subscriber identification information of another user is attached to the information communication terminal. Thus, the information communication terminal can be shared among a plurality of users. In addition, since a plurality of subscriber identification information can be stored in a single storage medium, and the storage medium can be used by being attached to an information communication terminal, a plurality of interface means for detaching the storage medium storing the subscriber identification information is provided. There is an effect that a plurality of subscriber identification information can be used properly for communication without any problem.
In particular, according to the invention of claim 2, high-level information processing such as encryption processing when storing private information or personal identification information for credit settlement, authentication processing when reading subscriber identification information, etc. is stored in the memory. This can be performed in the medium, and the processing load in the information communication terminal main body can be reduced.
In particular, according to the invention of claim 3, even when the range of the communication partner is different for each subscriber identification information, it becomes easy to set the communication partner at the start of communication. There is an effect that convenience in communication is improved.
In particular, according to the invention of claim 4, since communication history information can be read and displayed for each subscriber identification information, the communication history information when performing communication by switching the subscriber identification information is easy. There is an effect that can be confirmed.
In particular, according to the fifth aspect of the present invention, only when it is determined that the subscriber identification information is usable based on the authentication information input by the user with the authentication information input means and the verification authentication information, the subscriber identification is performed. Since the information can be read and made available, there is an effect that the security can be improved by avoiding unauthorized use of the subscriber identification information.
In particular, according to the invention of claim 6, it is possible to receive a communication service including at least transmission based on specific subscriber identification information according to a user's desire. There is an effect of increasing the degree of freedom.
In particular, according to the invention of claim 7, a subscription is made between mobile communication terminals conforming to IMT-2000, such as between a mobile communication terminal of W-CDMA communication system and a mobile communication terminal of cdma2000 communication system. A person identification IC card can be shared. In addition, each mobile communication terminal has an effect that it can be used for communication separately from a plurality of subscriber identification information stored in the subscriber identification IC card.

Hereinafter, an embodiment in which the present invention is applied to a mobile phone which is a mobile communication terminal as an information communication terminal will be described.
First, a schematic configuration of an entire communication system for performing communication using a mobile phone according to an embodiment of the present invention will be described.
FIG. 1 is an explanatory diagram showing an example of a schematic configuration of the entire communication system according to the present embodiment. This communication system is configured using a mobile phone 10 as an information communication terminal and a mobile phone communication network 20 as a communication network. The cellular phone communication network 20 includes a communication management system 200, a base station 210, a base station control device 220, and a gateway device 260. Here, the network part including the base station 210 and the base station controller 220 is referred to as a “radio access network”, and the network part including the communication management system 200 and the gateway apparatus 260 is referred to as a “core network”.

  The base station 210 is provided for each cell subject to jurisdiction, converts data from a wired line in the mobile phone communication network 20 into a data format suitable for the radio interface, and wirelessly transmits to the mobile phone 10 in the cell subject to jurisdiction. Transmit at frequency. Conversely, data from the cellular phone 10 transmitted at a radio frequency is received and converted into a data format suitable for the wired interface, and transferred to the wired line portion in the cellular phone communication network 20.

  The base station control device 220 performs incoming / outgoing call control between the mobile phone 10 and the communication control device 230, communication channel assignment, base station area switching (handoff), and the like. When the packet switching method is adopted as the communication control method (communication switching method), a packet control unit (PCU: Packet Control Unit) having a function specific to a packet is provided in the base station control device 220.

  The gateway device 260 performs interconnection processing with another communication carrier's communication network, a public telephone network such as ISDN, and another communication network such as the Internet. For example, a gateway mobile switching center (GMSC) is used as the gateway device 260 when the circuit switching method is adopted. In addition, as the gateway device 260 when the packet switching method is adopted, for example, a node (GGSN: Gateway GPRS Support Node) that performs an interconnection process with another packet data communication network is used.

  The communication management system 200 manages communication by each mobile phone 10 based on subscriber identification information assigned to the user of each mobile phone 10. This subscriber identification information is information for identifying a subscriber of a communication service that has signed a contract with the communication carrier when using a communication service such as telephone or mail provided by the communication carrier.

  The subscriber identification information includes mobile phone numbers such as MDN (Mobile Directory Number) and MSISDN (Mobile Station ISDN number definition), and mobile phones such as ESN (Electronic Serial Number) and IMEI (International Mobile Equipment Identifier). The number which identifies is mentioned. These numbers are subscriber identification information when the mobile phone and the subscriber correspond one-to-one.

  Examples of the subscriber identification information include MIN (Mobile Identification Number), IMSI (International Mobile Subscriber Identity), TMSI (Temporary Mobile Subscriber Identity), and the like. Here, the IMSI is uniquely assigned to each subscriber so as to be different for each subscriber using the cellular phone communication network. The TMSI is uniquely assigned within one location registration management area based on the IMSI. This TMSI is temporarily used in place of the IMSI as subscriber identification information of a mobile phone existing in the location registration management area to which it is assigned.

  In the present embodiment, among these subscriber identification information, the IMSI used in a GSM (Global System for Mobile Communications) mobile phone or a so-called third-generation mobile phone compliant with the IMT-2000 standard is stored. Show the case. In actual communication, TMSI may be temporarily used instead of IMSI as described above. However, in the following description, when it is not necessary to distinguish between IMSI and TMSI, both of them are used. “IMSI” is used to indicate “IMSI”, and “IMSI” and “TMSI” are distinguished from each other when it is necessary to distinguish them.

  The IMSI includes country identification information and communication carrier identification information in addition to subscriber identification information. For example, the IMSI includes a code for identifying a subscriber having a maximum of 10 digits: MSIN (Mobile Subscriber Identification Number), a code for identifying a 3-digit country: MCC (Mobile Country Code), and a communication business of 2 to 3 digits. A network identification code: MNC (Mobile Network Code).

The communication management system 200 includes a communication control device 230 as communication control means, and a location registration / authentication device 240 as position information registration means and authentication means.
The communication control device 230 performs connection control and service control when communication is performed using each mobile phone 10. For example, a mobile switching center (MSC) is used as the communication control device 230 when the circuit switching method is adopted. For example, a node (SGSN: Serving GPRS Support Node) that performs user location management, security management, access control, and the like is used as the communication control device 230 when the packet switching method is adopted.

  Based on the subscriber identification information received from each mobile phone 10, the location registration / authentication apparatus 240 provides information on the current location where each mobile phone 10 is located, that is, location registration management where each mobile phone 10 is located. Register and manage area location information. The location registration / authentication device 240 includes a home location register (HLR) 241 and a visitor location register (VLR) 242 as subscriber information storage means for managing location information and subscriber information of each mobile phone. The home location register (HLR) 241 and the visitor location register (VLR) 242 may be provided independently of each other, or a device in which the functions of both registers are integrated may be provided. When the HLR 241 and the VLR 242 are provided independently, the following information is registered in each register. That is, in the HLR 241, the telephone number and subscriber identification information (IMSI) of the mobile phone and the information on the target VLR in the location registration management area (located area) where the mobile phone is located are registered. The VLR 242 includes a cellular phone number, subscriber identification information (IMSI) of a location registration management area managed by the VLR, temporary subscriber identification information (TMSI), and a location information ID (LAI: Location Area). Identification) and communication state information are registered. In this case, the VLR 242 may be provided on the communication control device 230 side.

  The location registration management area may be an area composed of one cell managed by a base station that performs radio communication with each mobile phone 10, and is an area where a plurality of adjacent cells are managed as one group. May be. A typical size of one location registration management area is several kilometers to several hundred meters. The location registration of each mobile phone 10 with respect to the location registration / authentication device 240 is performed periodically when the power is turned on and whenever the cell where the mobile phone 10 is located changes. At the time of location registration, an authentication process described later using subscriber identification information stored in the mobile phone is performed.

  Further, the location registration / authentication device 240 is used for communication use by each mobile phone 10 based on the subscriber identification information received from each mobile phone 10 and the subscriber information registered in the HLR 241 or VLR 242. Perform user authentication.

  The communication management system 200 also includes an accounting management device (not shown). In this accounting management apparatus, each user uses the mobile phone 10 based on the communication use information and subscriber identification information received from the communication control apparatus 230 and the subscriber information stored in the subscriber database. Charge processing is performed for communications such as telephone calls, mail transmission / reception, and information download.

Next, the configuration of the mobile phone 10 of the present embodiment will be described. As described above, the mobile phone 10 according to the present embodiment is preferably one that performs communication using a communication method conforming to IMT-2000, such as the W-CDMA communication method or the cdma2000 communication method.
FIG. 2 is a block diagram illustrating an example of the configuration of the mobile phone 10 according to the present embodiment. The main body 100 of the cellular phone 10 includes a control unit 111 as a control unit, an internal memory 112 as an internal storage unit, a wireless communication unit 113 as a communication unit, and an antenna 114. A microphone 116 and a speaker 117 are connected to the control unit 111 through an audio processing unit 115, a display unit 119 is connected through an image processing unit 118, and a key operation unit 120 is further connected. The speaker 117 may be configured by separately providing a receiver speaker (receiver) for listening to voice during a call and an external output speaker for outputting a ring tone, music, or the like. You may comprise by one speaker so that the speaker for receivers and the speaker for external outputs may be combined.

  Further, the mobile phone 10 is configured such that a USIM (Universal Subscriber Identity Module) card 122 as a subscriber identification IC card, which is a removable storage medium, is detachable. This USIM card 122 is a SIM (Subscriber Identity Module) card used in a conventional GSM mobile phone, which corresponds to the standard of IMT-2000, which is a so-called third generation mobile phone standard. . The USIM card 122 includes a control unit as a control unit that performs control of reading and writing of data and a memory as a data storage unit, and includes a USIM card interface device (hereinafter referred to as “USIM card I / F” as an interface unit). It is referred to as “apparatus”). The control unit of the USIM card 122 includes a CPU and performs processing such as folder and file management and user authentication. In addition, a predetermined file system including MF (Master File), EF (Elementary File), DF (Dedicated File), and ADF (Application Dedicated File) is constructed in the memory, and various types of information are stored in a file format. . The IMSI including the subscriber identification information is stored in EF_IMSI, which is one of the EFs.

  In addition to the IMSI including the above-described subscriber identification information, the USIM card 122 stores various additional information files as follows. As additional information, an authentication algorithm used for communication via the mobile phone communication network 20, telephone / address book information as communication partner information, and communication history information indicating transmission and reception history are stored. Further, verification authentication information (for example, verification PIN: Personal Identity Number) for accessing these information files is stored. These authentication algorithms, telephone / address book information, and communication history information are stored in association with the subscriber identification information for each subscriber identification information. Then, only when the authentication information (for example, PIN) input by the user matches the verification authentication information, various additional information files corresponding to the user's subscriber identification information are accessed and read / written. can do.

The USIM card 122 is issued by, for example, a mobile phone carrier, and records information on subscribers (mobile phone subscribers) who are users of mobile phones. By attaching this USIM card 122 to the USIM card I / F device 121 of the mobile phone 10, the mobile phone 10 can be used with predetermined contract contents. In addition, by using the USIM card 122 by replacing it with a plurality of mobile phones, the plurality of mobile phones can be used as the same contractor.
The USIM card I / F device 121 is controlled by the control unit 111 and has an interface function for inputting / outputting data to / from the USIM card 122 and a function for detecting the insertion of the USIM card 122 when the USIM card 122 is attached / detached. is doing.

  The control unit 111 includes, for example, a CPU, a cache memory, a system bus, and the like, and by executing a predetermined control program, data is transmitted to and received from each unit such as the internal memory 112 and the wireless communication unit 113. Or control.

  The control unit 111 is also used as a control unit that performs the following control. That is, the control unit 111 performs control so that information is written to and read from the USIM card 122 via the USIM card I / F device 121. In addition, the control unit 111 performs control such that a plurality of subscriber identification information (IMSI) stored in the USIM card 122 is switched and read, and communication such as telephone and mail transmission / reception is performed.

  The internal memory 112 is composed of a semiconductor memory such as a RAM or a ROM, and stores a control program executed by the control unit 111 and various data. The internal memory 112 is also used as content data storage means for storing content data such as images, music, and programs downloaded from information providing sites.

  Further, as in the case of the USIM card 122, the following various additional information files are stored in the internal memory 112. As additional information, an authentication algorithm used for communication via the mobile phone communication network 20, telephone / address book information as communication partner information, and communication history information indicating transmission and reception history are stored. Further, verification authentication information (for example, verification PIN) for accessing these information files is stored. These authentication algorithms, telephone / address book information, and communication history information are stored in association with the subscriber identification information for each subscriber identification information. Then, only when the authentication information (for example, PIN) input by the user matches the verification authentication information, various additional information files corresponding to the user's subscriber identification information are accessed and read / written. can do.

  The wireless communication unit 113 is controlled by the control unit 111, and performs wireless communication with the base station 210 of the mobile phone communication network 20 through an antenna 114 by a predetermined communication method. Through this wireless communication, it is possible to perform voice telephone communication with other specific mobile phones, etc., and perform data communication such as transmission / reception of e-mails and content download from an information providing site.

  The voice processing unit 115 encodes the transmission voice signal input from the microphone 116 by a predetermined method and sends the encoded signal to the control unit 111. Also, the voice processing unit 115 decodes the received voice signal received by the wireless communication unit 113 and outputs it from the speaker 117. Further, the voice processing unit 115 outputs a sound signal such as a sound effect used in an incoming melody or an application program stored in the internal memory 112 from the speaker 117.

  The image processing unit 118 processes image data received by the wireless communication unit 113 and image data such as icons and menus stored in the internal memory 112, and displays the processed data on a display unit such as a liquid crystal display (LCD). .

  The key operation unit 120 includes a data input key (ten key, * key, # key), a call start key, an end key, a scroll key, a multi-function key, and the like. Used for scrolling and selecting displayed information. The key operation unit 120 allows the user to specify authentication information input means for the user to input authentication information and subscriber identification information to be used when at least sending out the plurality of subscriber identification information. It is also used as a designated operation input means that is sometimes operated.

In the mobile phone 10 having the above-described configuration according to the present embodiment, a plurality of different subscriber identification information (IMSI) is stored in the USIM card 122, and the mobile phone such as telephone and mail transmission / reception is used for the subscriber identification information (IMSI). Communication via the communication network 20 can be performed.
Hereinafter, in this embodiment, as an example, user A uses business identification information: IMSI (B) used by the company (corporate B) for work, and user A uses personal information other than work. A case where personal subscriber identification information: IMSI (A) used in the above is stored and used in the USIM card 122 of the mobile phone 10 will be described.

Table 1 shows the relationship between subscriber identification number, telephone number, e-mail address, storage location, subscriber, user and application for the two subscriber identification information IMSI (A) and IMSI (B). . The subscriber identification information IMSI (A) in which the individual A is in the name of the subscriber is stored in the USIM card 122 attached to the mobile phone 10 and used for personal communication of the user A. Furthermore, the subscriber identification information IMSI (B) in which the corporation B, who is the work place of the individual A, is in the name of the subscriber is also stored in the USIM card 122 and used for business communication of the user A. Further, the USIM card 122 stores an authentication algorithm, communication partner telephone / address book information, and communication history information in association with the subscriber identification information for each subscriber identification information IMSI.

Next, a main part of a communication processing procedure when communicating using the mobile phone 10 having the above-described configuration will be described. Hereinafter, the following cases 1 to 4 will be described separately.
1. When the power is turned on with the user A's USIM card (A) attached (FIG. 3).
2. When the use of IMSI (B) of corporation B is stopped and the use is switched to using only IMSI (A) of user A (FIG. 4).
3. When the use of the IMSI (A) of the user A is stopped and the use is switched to the use of only the IMSI (B) of the corporation B (FIG. 5).
4). When the USIM card (A) of user A is removed, the USIM card (C) of another user C is inserted, and the power is turned on (FIG. 6).

  FIG. 3 is a sequence diagram showing an example of a communication processing procedure when the power is turned on in a state where the USIM card (A) 122 of the user A is attached to the mobile phone 10 having the above configuration. The communication processing procedure when the mobile phone 10 moves to another location registration management area after the power is turned on is the same communication procedure.

  In FIG. 3, first, when the user A turns on the power of the mobile phone 10 with his / her USIM card (A) attached, a predetermined amount is set between the mobile phone 10 and the base station 210 of the mobile phone communication network 20. The radio link establishment sequence is executed.

Next, the mobile phone 10 displays a screen that prompts the user to input a PIN number as authentication information for reading the business-use IMSI (B) stored in the USIM card (A). When the user operates the key operation unit 120 while viewing this display and inputs a predetermined PIN number, terminal level authentication processing is performed. The control unit 111 of the mobile phone 10 reads the IMSI (B) based on the authentication information input by the user and the PIN number as the verification authentication information stored in association with the IMSI (B). Determine if it is possible. Here, when both PIN numbers match and it is determined that reading is possible, the control unit 111 reads the business IMSI (B) stored in the USIM card (A).
The business-use IMSI (B) stored in the USIM card (A) may be controlled to be read without performing the authentication.

  Next, the mobile phone 10 uses the business-use IMSI (B) read from the USIM card (A) to the location registration / authentication device 240 of the base station in the location registration management area where the mobile phone 10 is located. The location information LAI is notified. Here, when TMSI is already assigned and stored in the mobile phone 10, the TMSI is read and used instead of the IMSI. When the VLR corresponding to the location information LAI received from the mobile phone 10 changes, the location registration / authentication device 240 registers the information on the new VLR in the HLR.

Next, a predetermined authentication / confidential processing sequence is executed between the mobile phone 10 and the location registration / authentication device 240.
The subscriber authentication is performed using a challenge-response method that does not use a password, for example, as follows. First, the location registration / authentication device 240 generates a random number (RAND) based on the IMSI (B) received from the mobile phone 10 and transmits it to the mobile phone 10. The mobile phone 10 uses a random number (RAND) value received from the location registration / authentication device 240, a unique authentication key Ki (B) stored in the USIM card (A) together with the IMSI (B), and a predetermined authentication algorithm. Are used to perform an encryption operation, and a signed response (SRES) is generated. Then, the mobile phone 10 transmits the generated response (SRES) to the location registration / authentication device 240. The location registration / authentication device 240 uses the numerical value of the random number (RAND) transmitted to the mobile phone 10, the unique authentication key Ki (B) corresponding to the IMSI (B), and a predetermined authentication algorithm. The encryption operation is performed in the same manner as in, and a response (SRES) is generated. Then, the location registration / authentication device 240 authenticates the subscriber (corporation B) by comparing the response (SRES) received from the mobile phone 10 with the response (SRES) generated in the device. When the authentication is successful, the location registration / authentication apparatus 240 executes a registration process related to the IMSI (B).
The secret communication is performed as follows, for example. After the authentication is successful and the user communication channel (link) between the mobile phone 10 and the location registration / authentication device 240 is established, the mobile phone 10 and the location registration / authentication device 240 each include the random number (RAND). The secret key Kc (B) used for the secret communication is generated using the numerical value of N, the unique authentication key Ki (B), and a predetermined algorithm. This secret key Kc (B) is used for encryption of data moving on the wireless link (wireless interface) between the mobile phone 10 and the base station 210. For example, the cellular phone 10 encrypts data to be transmitted (plain text) using the secret key Kc (B) and a predetermined secret algorithm. Then, the location registration / authentication apparatus 240 or the base station 210 decrypts the received encrypted data using the secret key Kc (B) and a predetermined secret algorithm, and returns it to plaintext data.

  Next, in order to ensure anonymity of communication, a sequence for assigning a new TMSI is executed between the mobile phone 10 and the location registration / authentication device 240. First, the location registration / authentication apparatus 240 generates and assigns a new TMSI ′ (B) in association with the IMSI (B) of the corporation B. Then, the location registration / authentication apparatus 240 transmits a new TMSI '(B) to the mobile phone 10 using the above-described secret communication channel. The cellular phone 10 stores the new TMSI ′ (B) received from the location registration / authentication device 240 in a predetermined storage area of the internal memory 112 or the USIM card (A) 122 in association with the IMSI (B). Then, the mobile phone 10 notifies the location registration / authentication apparatus 240 that the assignment of the new TMSI '(B) has been completed.

  Next, the location registration / authentication device 240 transmits to the mobile phone 10 a location registration response notifying that location registration has been completed for the IMSI (B) of the corporation B out of the two subscriber identification information of the mobile phone 10. To do. Then, a link disconnection sequence is executed between the mobile phone 10 and the location registration / authentication device 240.

After the authentication and location registration for the IMSI (B) of the corporation B are completed, authentication and location registration are subsequently executed for the IMSI (A) of the individual A.
First, when the mobile phone 10 detects the installation of the USIM card (A) 122 of the individual A when the power is turned on, the mobile phone 10 reads the personal IMSI (A) stored in the USIM card (A) 122. A screen prompting the user to input a PIN number as authentication information is displayed. When the user operates the key operation unit 120 while viewing this display and inputs a predetermined PIN number, terminal level authentication processing is performed. The control unit 111 of the mobile phone 10 reads the IMSI (A) based on the authentication information input by the user and the PIN number as the verification authentication information stored in association with the IMSI (A). Determine if it is possible. Here, when it is determined that both PIN numbers match and can be read out, the control unit 111 uses the control unit in the USIM card (A) 122 to store the personal information stored in the USIM card (A) 122. Read IMSI (A).

  Next, for the personal IMSI (A), the location registration processing, authentication / confidential processing, and new TMSI (A) allocation processing are executed. Note that the contents of these processes are the same as those in the case of the above-mentioned business-use IMSI (B), and thus description thereof is omitted. However, information such as a key, an algorithm, and TMSI (A) is stored not in the internal memory 112 but in a predetermined storage area in the USIM card (A) 122.

  Next, a link disconnection sequence is executed between the mobile phone 10 and the location registration / authentication device 240. Finally, a radio link disconnection sequence is executed between the mobile phone 10 and the base station 210.

  Through the above communication sequence, the user A can use the telephone function for both the personal telephone number and the business telephone number in the cellular phone communication network 20 of the subscribing telecommunications carrier, E-mails can be sent and received for e-mail addresses and business e-mail addresses.

When making a call or sending an e-mail using the mobile phone 10, the initial setting is such that either the individual A IMSI (A) or the corporation B IMSI (B) is used as the source. Is set. When the user A performs an operation for switching the IMSI, the IMSI used when making a call or sending a mail is changed.
On the other hand, since the location registration is performed for both the IMSI (A) of the individual A and the IMSI (B) of the corporation B, both the IMSI ( Regarding A) and IMSI (B), signals and data can always be received from the mobile phone communication network 20 side.
Here, it is preferable to display the IMSI being used so that the user can always grasp the IMSI used for transmitting / receiving a telephone or mail in the mobile phone 10.

  When a personal telephone or mail is transmitted, a personal telephone / address book stored in the USIM (A) card 122 is used in association with the IMSI (A) of the individual A. On the other hand, when a business telephone or email is transmitted, a business telephone / address book stored in the USIM card (A) 122 or the internal memory 112 is used in association with the IMSI (B) of the corporation B. .

  Further, when sending / receiving a personal telephone or mail, the communication history information is provided in the USIM (A) card 122 or the internal memory 112 provided in association with the IMSI (A) of the individual A. Saved in the business communication history information file. On the other hand, when transmitting / receiving business telephones and mails, the communication history information is provided in association with the IMSI (B) of the corporation B, in the USIM card (A) 122 or the internal memory 112 Saved in the business communication history information file.

FIG. 4 is a sequence diagram illustrating an example of a communication processing procedure when the use of the business IMSI (B) of the corporation B is stopped and the use is switched to using only the IMSI (A) of the personal user A. .
In FIG. 4, the user A operates the key operation unit 120 to instruct to stop using the IMSI (B) of the business corporation B. Based on this instruction operation, a predetermined radio link establishment sequence is executed between the mobile phone 10 and the base station 210 of the mobile phone communication network 20.
Next, after the terminal-level authentication process similar to that in the case of FIG. 3 described above, the control unit 111 of the mobile phone 10 reads the business-use IMSI (B) stored in the USIM card (A) 122, A location registration cancellation request for the business IMSI (B) is transmitted to the location registration / authentication apparatus 240.
Next, the location registration / authentication device 240 cancels the location registration for the IMSI (B) in the HLR and VLR based on the location registration release request received from the mobile phone 10, and establishes the IMSI with the base station 210. A sequence for clearing information on (B) is executed. Then, a radio link disconnection sequence is executed between the mobile phone 10 and the base station 210.

FIG. 5 is a sequence diagram illustrating an example of a communication processing procedure when the use of IMSI (A) of user A is stopped and the use is switched to using only IMSI (B) of corporation B.
In FIG. 5, the user A operates the key operation unit 120 to instruct to stop using the IMSI (A) of the personal user A. Based on this instruction operation, a predetermined radio link establishment sequence is executed between the mobile phone 10 and the base station 210 of the mobile phone communication network 20.
Next, after the terminal-level authentication process similar to that in FIG. 3 described above, the control unit 111 of the mobile phone 10 reads the personal IMSI (A) stored in the USIM card (A) 122, A location registration cancellation request for personal IMSI (A) is transmitted to location registration / authentication device 240.
Next, the location registration / authentication device 240 cancels the location registration for the IMSI (A) in the HLR and VLR based on the location registration release request received from the mobile phone 10, and the IMSI with the base station 210. A sequence for clearing information on (A) is executed. Then, a radio link disconnection sequence is executed between the mobile phone 10 and the base station 210.

FIG. 6 shows a communication processing procedure when the user A's USIM card (A) is removed from the mobile phone 10, another user C's USIM card (C) is attached to the mobile phone 10 and the power is turned on. It is a sequence diagram which shows an example. In this case, for the subscriber identification information IMSI (C) for personal use of the user C and the subscriber identification information IMSI (D) for business use, the subscriber identification number, telephone number, mail address, storage location, subscriber, use Table 2 shows the relationship between persons and uses.

In FIG. 6, the communication processing procedure for user C's business subscriber identification information IMSI (D) is the same as that in the case of subscriber identification information IMSI (B) in FIG. To do.
After the authentication and location registration for the business IMSI (D) are completed, authentication and location registration are subsequently executed for the personal IMSI (C).
First, when the mobile phone 10 detects the installation of the USIM card (C) 122 of the user C when the power is turned on, the mobile phone 10 displays the personal IMSI (C) stored in the USIM card (C) 122. A screen for prompting input of a PIN number as authentication information for reading is displayed. When the user operates the key operation unit 120 while viewing this display and inputs a predetermined PIN number, terminal level authentication processing is performed. The control unit 111 of the mobile phone 10 reads the IMSI (C) based on the authentication information input by the user and the PIN number as the verification authentication information stored in association with the IMSI (C). Determine if it is possible. Here, when it is determined that both PIN numbers match and can be read out, the control unit 111 uses the control unit in the USIM card (C) 122 to store the personal information stored in the USIM card (C) 122. Read IMSI (C).

  Next, for the personal IMSI (C), the location registration process, the authentication / secret process, and the new TMSI (C) allocation process are executed. Note that the contents of these processes are the same as those in the case of the above-mentioned business-use IMSI (B), and thus description thereof is omitted. However, information such as a key, an algorithm, and TMSI (C) is not stored in the internal memory 112 but in a predetermined storage area in the USIM card (C) 122.

  Next, a link disconnection sequence is executed between the mobile phone 10 and the location registration / authentication device 240. Finally, a radio link disconnection sequence is executed between the mobile phone 10 and the base station 210.

  Through the communication sequence described above, the user C can use the telephone function for both the personal telephone number and the business telephone number in the cellular phone communication network 20 of the subscribing telecommunications carrier, E-mails can be sent and received for e-mail addresses and business e-mail addresses.

As described above, according to the present embodiment, the two subscriber identification information IMSI can be properly used for communication. In addition, it is not necessary to provide a plurality of USIM card I / F devices to which the USIM card for storing the subscriber identification information IMSI can be attached and detached.
In addition, according to the present embodiment, a dedicated telephone / address book is provided for each of the personal IMSI (A), IMSI (C), business IMSI (B), and IMSI (D). Even when the range of the communication partner is different for each IMSI, it is easy to set the communication partner at the start of communication, so that the convenience when performing communication by switching the subscriber identification information is improved.
In addition, according to the present embodiment, a dedicated communication history information file is provided for each of the personal IMSI (A), IMSI (C), and the business IMSI (B), IMSI (D). Communication history information can be read and displayed for each IMSI. Therefore, it is possible to easily confirm communication history information when communication is performed by switching the IMSI.
Further, according to the present embodiment, the IMSI can be read and used only when it is determined that the IMSI can be used based on the authentication information (PIN number) input by the user and the verification authentication information. Therefore, it is possible to avoid unauthorized use of the subscriber identification information IMSI and improve security.
Further, according to the present embodiment, since it is possible to receive a communication service including at least transmission based on specific subscriber identification information IMSI in accordance with a user's desire, the degree of freedom in properly using a plurality of IMSIs is increased.

  In the above embodiment, the telephone / address book and communication history information files for each of the plurality of subscriber identification information IMSI are stored in the USIM card 122 or the internal memory 112. You may make it preserve | save. In this case, as shown in FIG. 7, a memory card I / F device 123 that allows the memory card 124 to be attached and detached is provided. Examples of the memory card include an SD memory card, a CF (Compact Flash (registered trademark)) memory card, a smart media, a memory stick, an MMC (multimedia card), and the like.

  In the above-described embodiment, the case where communication is used based on two subscriber identification information IMSIs in one mobile phone has been described. However, the present invention can apply three or more subscriptions in one mobile phone. The present invention can be similarly applied when using communication based on the person identification information IMSI.

In the above embodiment, the contract contents for a plurality of subscriber identification information may be different from each other. For example, each of the plurality of subscriber identification information may be a plurality of different subscriber identification information assigned by the same corporation or individual.
Further, the charge plans for the plurality of subscriber identification information may be different from each other. In this case, different charge plans can be used properly with one mobile phone.
Further, each of the plurality of subscriber identification information is assigned by contracting with different communication carriers, and may be for receiving different communication services provided by those communication carriers. . In this case, it is possible to use different communication services of different carriers from one mobile phone.
Further, each of the plurality of subscriber identification information may be assigned for different fee payment methods. For example, some of the plurality of subscriber identification information is assigned with a postpaid contract, and the remaining subscriber identification information is assigned with a prepaid contract. Also good. In this case, different charge payment methods (postpaid and prepaid) can be used properly with one mobile phone.
Further, each of the plurality of subscriber identification information may be for receiving communication services of different communication schemes such as PDC, GSM, W-CDMA and the like. In this case, it is possible to use different communication services of different communication methods with one mobile phone.

  In the above embodiment, the case where the information communication terminal is a mobile phone has been described. However, the present invention is not limited to a mobile phone as long as a storage medium such as a USIM card capable of storing the subscriber identification information is removable. The present invention can also be applied to other information communication terminals.

1 is a schematic configuration diagram of an entire communication system using a mobile phone according to an embodiment of the present invention. The block diagram which shows schematic structure of the mobile phone. The sequence diagram which shows an example of a communication processing procedure when a power supply is turned on in the state which mounted | wore the user's A USIM card | curd in the same mobile phone. The sequence diagram which shows an example of the communication processing procedure when the use of IMSI (B) of corporation B is stopped. The sequence diagram which shows an example of a communication processing procedure when the use of the IMSI (A) of the user A is stopped. The sequence diagram which shows an example of a communication processing procedure when the USIM card (C) of another user C is mounted | worn with the mobile phone from which the USIM card (A) of user A was removed. The block diagram which shows schematic structure of the mobile telephone which concerns on other embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Mobile phone 20 Mobile phone communication network 111 Control part 112 Internal memory 113 Wireless communication part 120 Key operation part 121 USIM card I / F apparatus 122 USIM card 123 Memory card I / F apparatus 124 Memory card

Claims (8)

An information communication terminal that can use communication via a communication network based on each of a plurality of different subscriber identification information,
A communication means for performing communication via a communication network;
Interface means for detachably attaching the storage medium and inputting / outputting data to / from the storage medium;
Control means for controlling communication by the communication means based on subscriber identification information,
The storage medium stores a plurality of different subscriber identification information,
The control means reads subscriber identification information from the storage medium, and controls the communication means to perform communication via the communication network based on the read subscriber identification information. . In the information communication terminal according to claim 1,
The information communication terminal, wherein the storage medium is an IC card having a CPU and a memory storing the plurality of subscriber identification information. In the information communication terminal according to claim 1 or 2,
The information communication terminal, wherein the storage medium stores communication partner information used for communication based on the subscriber identification information for each of the subscriber identification information. In the information communication terminal according to any one of claims 1 to 3,
An information communication terminal, wherein the storage medium stores communication history information for communication based on the subscriber identification information for each of the subscriber identification information. In the information communication terminal according to any one of claims 1 to 4,
Provided with authentication information input means for the user to input authentication information,
The storage medium stores verification authentication information for reading the subscriber identification information,
The control means reads the authentication information input by the user with the authentication information input means and the storage medium storing the subscriber identification information to be used when the use of the subscriber identification information is started. An information communication terminal characterized by determining whether or not the subscriber identification information can be used based on the verification authentication information and controlling the use of the subscriber identification information. In the information communication terminal according to any one of claims 1 to 5,
A designation operation means for a user to designate subscriber identification information to be used when sending at least one of the plurality of subscriber identification information;
The information communication terminal characterized in that the control means controls communication so as to make at least a transmission based on subscriber identification information designated by a user by the designation operation means. In the information communication terminal according to any one of claims 1 to 6,
The above storage medium is used by being mounted on a mobile communication terminal that performs communication by a communication system compliant with IMT-2000 (International Mobile Telecommunication 2000) including a W-CDMA (Wideband Code Division Multiple Access) communication system and a cdma2000 communication system. An information communication terminal, which is a possible subscriber identification IC card. A communication management system for managing communication by an information communication terminal according to any one of claims 1 to 7,
Location information registration means for registering location information of the information communication terminal based on the subscriber identification information received from the information communication terminal;
Subscriber information storage means for storing subscriber information;
And authentication means for performing authentication for communication use by the information communication terminal based on subscriber identification information received from the information communication terminal and subscriber information read from the subscriber information storage means. Communication management system.

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