JP2006211280A - Mobile communication terminal, mobile communication system, and terminal connection method - Google Patents

Mobile communication terminal, mobile communication system, and terminal connection method Download PDF

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JP2006211280A
JP2006211280A JP2005020316A JP2005020316A JP2006211280A JP 2006211280 A JP2006211280 A JP 2006211280A JP 2005020316 A JP2005020316 A JP 2005020316A JP 2005020316 A JP2005020316 A JP 2005020316A JP 2006211280 A JP2006211280 A JP 2006211280A
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mobile communication
plurality
network
communication network
recording medium
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Japanese (ja)
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Hideo Omura
英雄 大村
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Nissan Motor Co Ltd
日産自動車株式会社
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Priority to JP2005020316A priority Critical patent/JP2006211280A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To appropriately perform communication using a plurality of mobile communication networks whose service areas are different without forcing a user complicated work such as changing work of a recording media when the user moves between service areas of a plurality of mobile communication networks to which the user subscribes. <P>SOLUTION: A plurality of SIM cards 2 corresponding to a plurality of GSM network NTs whose service areas are different, are made to be held in a card holder 4 of a mobile communication terminal 1. And, a portable telephone set 3 of the mobile communication terminal 1 automatically selects the SIM card 2 corresponding to a GSM network NT developing communication services in the present position of the mobile communication terminal 1 out of a plurality of SIM cards 2 held in the card holder 4, reads out subscriber identification information from the selected SIM card 2, and performs connection processing to the GSM network NT. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a mobile communication terminal, a mobile communication system, and a terminal connection method to a mobile communication network that comply with a standard such as GSM (Global System for Mobile communication).

  As a standard for digital mobile phones developed in Europe, the GSM (Global System for Mobile communication) system is known. In the GSM system, when a user enters into a service use contract with an operating company of a mobile communication network (hereinafter referred to as a GSM network) compliant with the GSM standard, the operating company identifies the subscriber to the user. A SIM (Subscriber Identification Module) card storing information is distributed. A user (service subscriber) sets a SIM card (recording medium) distributed from the operating company in his / her mobile phone, thereby enabling communication using the GSM network using the mobile phone.

Currently, GSM networks are widespread in Europe, Asia, Africa, the Middle East, and the like, and a large number of GSM networks that have different areas as service areas are deployed in these countries. Each of these GSM networks is an independent communication network because of different management companies, and users basically operate each GSM network in order to use services on multiple GSM networks. It is necessary to receive a SIM card storing subscriber identification information for each GSM network after a usage contract is signed with the company. However, if a roaming (mutual entry) contract is concluded between a GSM network to which the user has already subscribed and a GSM network to which the user has not joined, the user can pay an additional fee to pay for the unsubscribed GSM network. It is also possible to use network services (see, for example, Patent Document 1).
Japanese translation of PCT publication No. 2002-513520 (page 9-10)

  By the way, since the use of the GSM network by roaming described above requires payment of an additional fee, the user has concluded a use contract with each operating company for the GSM network expected to be frequently used. In many cases, SIM cards are distributed. Then, when moving from one GSM network service area to another GSM network service area, replace the SIM card set in the mobile phone and deploy the service at the new location. In general, subscriber identification information corresponding to the GSM network being read is read into a mobile phone, and communication using the GSM network is performed.

  However, as described above, every time the user moves between service target areas of a plurality of GSM networks, the work of replacing the SIM card set in the mobile phone by the user is complicated, and improvement has been demanded. In particular, when the mobile phone is used by connecting to a hands-free device mounted on the vehicle, it is necessary for the user to stop the vehicle once in a safe place and perform a SIM card replacement work, which is extremely complicated. . Such a problem is not limited to the GSM network described above, and is a problem that occurs in common when using various mobile communication networks that require connection processing based on subscriber identification information.

  The present invention was devised in view of the above circumstances, and is recorded when moving between service target areas of a plurality of mobile communication networks (GSM networks) to which a user is subscribed. Mobile communication terminal and mobile communication system capable of appropriately performing communication using a plurality of mobile communication networks having different service target areas without forcing the user to perform complicated work such as replacement of a medium (SIM card) It is another object of the present invention to provide a terminal connection method.

  In the present invention, in order to achieve the above-mentioned object, a mobile communication terminal that performs connection processing to a mobile communication network based on subscriber identification information corresponds to a plurality of mobile communication networks with different service target areas. A plurality of recording media each storing subscriber identification information for each mobile communication network are held. The mobile communication terminal stores subscriber identification information corresponding to the mobile communication network that is developing the communication service at the current location of the mobile communication terminal among the plurality of recording media. A recording medium is selected, subscriber identification information is read from the selected recording medium, and connection processing to the mobile communication network is performed.

  According to the present invention, the mobile communication terminal automatically selects the recording medium storing the subscriber identification information corresponding to the mobile communication network that is developing the communication service at the current position, and the selected recording medium Since the subscriber identification information is read from the mobile communication network and connected to the mobile communication network, it is possible to connect to a plurality of mobile communication networks with different service areas without forcing the user to perform complicated operations such as replacement of the recording medium. Thus, it is possible to appropriately perform communication using each mobile communication network.

  Hereinafter, specific embodiments of a mobile communication system to which the present invention is applied will be described in detail with reference to the drawings.

(First embodiment)
FIG. 1 is a diagram showing a schematic configuration of a mobile communication system according to the present embodiment. In this embodiment, as shown in FIG. 1, a user who has a mobile communication terminal 1 has a plurality of GSM networks NT (NT-A, NT-B, NT-C, NT-D) having different service target areas. As a subscriber, it is assumed that a contract for use is made with the operating company of each GSM network NT and the SIM card 2 (2a, 2b, 2c, 2d) is received from each operating company.

  In each GSM network NT, a radio base station 11 is installed at an appropriate place in each service target area. The connection between the mobile communication terminal 1 and the GSM network NT is performed via this radio base station 11. Each GSM network NT is provided with an exchange 12 managed by the respective operating company, and communication between the mobile communication terminal 1 and other terminals 13 using the GSM network NT is performed by this exchange. 12 is controlled.

  A mobile communication terminal 1 to which the present invention is applied has a configuration in which a card holder (recording medium holding means) 4 is connected to a mobile phone body 3 and is used by being mounted on a vehicle, for example. The card holder 4 integrally holds SIM cards 2a, 2b, 2c, and 2d for each GSM network NT-A, NT-B, NT-C, and NT-D to which the user has subscribed. The card holder 4 is provided with an interface portion at a position where the terminal portion of each SIM card 2 mounted at a predetermined mounting position comes into contact, and these interface portions are electrically connected to the mobile phone body 3. It is configured to be connected to. The form in which the card holder 4 holds the SIM card 2 is not particularly limited. For example, as shown in FIG. 2A, the SIM cards 2a, 2b, 2c, and 2d are arranged in a plane. The SIM cards 2a, 2b, 2c, and 2d may be held in a state of being stacked in the thickness direction as shown in FIG.

  Each SIM card 2a, 2b, 2c, 2d held in the card holder 4 has subscriber identification information required when using the GSM networks NT-A, NT-B, NT-C, NT-D, respectively. Is stored. Specifically, these SIM cards 2 are given as subscriber identification information corresponding to each GSM network NT by their own telephone numbers when using each GSM network NT and from the operating company of each GSM network NT. Information such as the user ID, information on the contract contents with the operating company of each GSM network NT, and a destination telephone number list are stored. The subscriber identification information stored in the SIM card 2 is appropriately read out via the interface unit provided in the card holder 4 in response to a request from the mobile phone body 3 and sent to the mobile phone body 3. It is done. The SIM card 2 may have a credit card size called a “full size” type or a size of 26 mm × 15 mm called a “plug-in” type. When the shape of the SIM card 2 is a “plug-in” type, the size of the card holder 4 can be reduced, so that the function of the card holder 4 is provided in the casing of the mobile phone body 3 so that each SIM The card 2 can be mounted and held in the mobile phone body 3.

  The mobile phone body 3 used as the mobile communication terminal 1 to which the present invention is applied specifies a GSM network NT that is developing a communication service at the current location of the mobile communication terminal 1 in addition to the normal call function. It has a function (network identification means). Specifically, the mobile phone body 3 acquires control information sent from the exchange 12 of the GSM network NT that is developing the communication service at the current position, and analyzes the control information of the GSM network NT, for example. The GSM network NT that is developing the communication service at the current position is specified. In addition, when each GSM network NT knows in advance which area is the service target area, and the mobile phone body 3 has a GPS (Global Positioning System) receiver, it is received by the GPS receiver. You may make it grasp | ascertain a present position from a GPS signal and specify GSM network NT which is developing communication service in the grasped present position. Further, when the mobile communication terminal 1 is mounted on a vehicle and used, the mobile phone body 3 acquires information on the vehicle position detected based on the GPS signal by an in-vehicle navigation system or the like, and the current position is obtained. It is also possible to identify the GSM network NT that is developing the communication service at the grasped current position.

  In addition, the mobile phone body 3 used as the mobile communication terminal 1 to which the present invention is applied is the current status of the mobile communication terminal 1 among the SIM cards 2a, 2b, 2c, 2d held in the card holder 4. It has a function (recording medium selection means) for selecting the SIM card 2 corresponding to the GSM network NT that is developing the communication service at the location. Specifically, when the GSM network NT that is developing the communication service at the current position is specified, the mobile phone body 3 has the SIM card 2a, 2b, 2c, 2d held in the card holder 4. When there is a SIM card 2 corresponding to the GSM network NT (a SIM card 2 in which subscriber identification information corresponding to the GSM network NT is stored) The SIM card 2 is selected as the SIM card 2 used for connection processing to the GSM network NT.

  In addition, when there are a plurality of GSM networks NT to which a user is subscribed and a GSM network NT that is developing a communication service at the current location, in other words, a service target of a plurality of GSM networks NT to which a user has subscribed If the areas partially overlap and the mobile communication terminal 1 is located in the overlapped area, the mobile phone body 3 has the lowest communication cost among the plurality of GSM networks NT. It is desirable to select the SIM card 2 corresponding to the GSM network NT. Thereby, the user can perform communication by the mobile communication terminal 1 more economically without paying special attention.

  In addition, when the GSM network NT that is developing the communication service at the current position is a GSM network NT to which no user is subscribed, that is, in each SIM card 2a, 2b, 2c, 2d held in the card holder 4 When there is no SIM card 2 corresponding to the GSM network NT, the mobile phone body 3 is a GSM network NT that has concluded a roaming agreement with the GSM network NT, and a user is subscribed to it. It is determined whether there is a GSM network NT (roaming determination means), and if there is a GSM network NT that has concluded such a roaming contract, a SIM corresponding to the GSM network NT that has concluded this roaming contract It is desirable to select card 2.

  Furthermore, at this time, if there are a plurality of GSM networks NT that have concluded roaming contracts with the GSM network NT that is developing the communication service at the current location, the mobile phone body 3 It is desirable to select the SIM card 2 corresponding to the GSM network NT with the lowest communication cost among NT. Thereby, the user can perform communication by the mobile communication terminal 1 more economically without paying special attention.

  The mobile phone body 3 used as the mobile communication terminal 1 to which the present invention is applied reads the subscriber identification information from the selected SIM card 2 and develops the communication service at the current location of the mobile communication terminal 1. A function (network connection means) for performing a connection process to the existing GSM network NT. Specifically, the mobile phone body 3 reads the local telephone number and user ID stored as subscriber identification information in the selected SIM card 2 and sets them in a memory such as an internal RAM, and sets the GSM network NT. When communicating with another terminal 13 by using, the local station telephone number and user ID are used to access the GSM network NT, and from the other terminal 13 via the GSM network NT If there is access to the number, this is received.

  Each function of the mobile phone body 3 as described above is realized by a controller that controls the operation of the mobile phone body 3 executing a control program stored in a ROM inside the mobile phone body 3. is there.

  In the mobile communication terminal 1 to which the present invention configured as described above is applied, the mobile phone main body 3 for connecting to the GSM network NT that is developing the communication service at the current location of the mobile communication terminal 1 The flow of processing is shown in FIG. The mobile phone main body 3 of the mobile communication terminal 1 to which the present invention is applied includes, for example, a GSM network NT that is developing a communication service at the current location based on control information sent from the exchange 12 of the GSM network NT. Monitors whether or not the mobile communication terminal 1 has moved from one GSM network NT service area to another GSM network NT service area, and deploys the communication service at the current location When it is determined that the current GSM network NT is switched, a series of processes shown in the flowchart of FIG. 3 is started.

  That is, the mobile phone body 3 of the mobile communication terminal 1 to which the present invention is applied first acquires control information sent from, for example, the switch 12 of the GSM network NT in step S1, and obtains the control information of the GSM network NT. By analyzing, the GSM network NT which is developing the communication service at the current position is specified. In addition, as described above, the process of specifying the GSM network NT that is developing the communication service at the current position is to store which area is the service target area of each GSM network NT. Alternatively, the current position of the mobile communication terminal 1 may be grasped based on a GPS signal or the like, and the grasped current position may be compared with information stored in advance.

  Next, in step S2, the mobile phone body 3 confirms whether there is a SIM card 2 corresponding to the GSM network NT specified in step S1 among the plurality of SIM cards 2 held in the card holder 4. To do. If it is determined that there is a SIM card 2 corresponding to the GSM network NT specified in step S1, whether or not there are a plurality of such SIM cards 2 is confirmed in the next step S3. Note that the presence of a plurality of SIM cards 2 corresponding to the GSM network NT identified in step S1 means that the service target areas of the plurality of GSM networks NT to which the user is subscribed partially overlap. It shows that the mobile communication terminal 1 is located in the area. On the other hand, if it is determined that there is no SIM card 2 corresponding to the GSM network NT specified in step S1, the process proceeds to step S6.

  As a result of the determination in step S3, when it is determined that there is only one SIM card 2 corresponding to the GSM network NT specified in step S1, the mobile phone main body 3 determines that the SIM card 2 in the next step S4. It is selected as the SIM card 2 used for connection processing to the GSM network NT that is developing the communication service at the current position. On the other hand, when it is determined that there are a plurality of SIM cards 2 corresponding to the GSM network NT identified in step S1, the mobile phone body 3 determines, for example, the subscriber identification information stored in each SIM card 2 in step S5. The GSM network NT with the lowest communication cost is identified from among the plurality of GSM networks NT corresponding to each SIM card 2 by referring to the information on the contract contents in the SIM card, and the SIM card corresponding to this GSM network NT 2 is selected as the SIM card 2 used for connection processing to the GSM network NT that is developing the communication service at the current location.

  Further, as a result of the determination in step S2, the mobile phone body 3 determines that there is no SIM card 2 corresponding to the GSM network NT specified in step S1 among the plurality of SIM cards 2 held in the card holder 4. In step S6, a roaming agreement is concluded with the GSM network NT identified in step S1 in the plurality of SIM cards 2 held in the card holder 4 in step S6. It is confirmed whether there is a SIM card 2 corresponding to the GSM network NT to which the user is subscribed. When it is determined that there is a SIM card 2 corresponding to the GSM network NT to which the user has subscribed, and the GSM network NT has concluded a roaming agreement with the GSM network NT identified in step S1. Confirms whether there are a plurality of such SIM cards 2 in the next step S7. On the other hand, if it is determined that there is no SIM card 2 corresponding to the GSM network NT that has concluded such a roaming agreement, a series of processing is terminated without performing connection processing to the GSM network NT.

  As a result of the determination in step S7, the SIM card 2 corresponding to the GSM network NT to which the user has subscribed is a GSM network NT that has concluded a roaming agreement with the GSM network NT specified in step S1. If it is determined that there is only one, the mobile phone body 3 uses the SIM card 2 in the next step S8 to use the SIM card 2 for connection processing to the GSM network NT that is developing the communication service at the current location. Select as. On the other hand, when it is determined that there are a plurality of SIM cards 2 corresponding to the GSM network NT to which the user is subscribed in the GSM network NT that has concluded a roaming agreement with the GSM network NT identified in step S1. In step S9, the mobile phone body 3 refers to, for example, information on the contract contents in the subscriber identification information stored in each SIM card 2, and the GSM network with the lowest communication cost due to roaming. The SIM card 2 corresponding to NT is selected as the SIM card 2 used for connection processing to the GSM network NT that is developing the communication service at the current location.

  Next, in step S10, the mobile phone body 3 reads the subscriber identification information from the SIM card 2 selected in any of step S4, step S5, step S8, or step S9, and sets the local phone number or user ID. A process of writing to a memory such as an internal RAM is performed. And when communicating with the other terminal 13 using the GSM network NT which is developing the communication service at the current position of the mobile communication terminal 1, the GSM is used by using these local telephone numbers and user IDs. Access to the network NT is performed, and if there is an access from the other terminal 13 to the local telephone number via the GSM network NT, this is received (step S11).

  FIG. 4 is a diagram schematically showing a state where a vehicle equipped with the mobile communication terminal 1 to which the present invention is applied has moved from a service target area of the GSM network NT-A to a service target area of the GSM network NT-B. It is. In such a scene, the mobile phone body 3 of the mobile communication terminal 1 uses the SIM card 2 used for connection processing to the GSM network NT among the plurality of SIM cards 2 held by the card holder 4 as GSM. Although it is necessary to switch from the SIM card 2a corresponding to the network NT-A to the SIM card 2b corresponding to the GSM network NT-B, in the mobile communication terminal 1 to which the present invention is applied, the mobile phone body 3 is the series described above. By performing the above process, the switching of the SIM card 2 is automatically performed.

  As described above, in the mobile communication system of the present embodiment, the card holder 4 of the mobile communication terminal 1 is made to hold a plurality of SIM cards 2 corresponding to a plurality of GSM networks NT having different service target areas. ing. The mobile phone body 3 of the mobile communication terminal 1 is developing a communication service at the current position of the mobile communication terminal 1 among the plurality of SIM cards 2 held in the card holder 4. A SIM card 2 corresponding to the GSM network NT is automatically selected, and subscriber identification information is read from the selected SIM card 2 to perform connection processing to the GSM network NT. Therefore, according to the mobile communication system of the present embodiment, the connection to the plurality of GSM networks NT having different service areas is appropriately switched without forcing the user to perform complicated work such as replacement of the SIM card 2. Thus, communication using each GSM network NT can be performed appropriately.

  Further, in the mobile communication system of the present embodiment, when there are a plurality of GSM networks NT to which a user is subscribed, which is a GSM network NT that is developing a communication service at the current location of the mobile communication terminal 1. The mobile phone body 3 of the mobile communication terminal 1 selects the SIM card 2 corresponding to the GSM network NT having the lowest communication cost from among the plurality of GSM networks NT and connects to the GSM network NT. Since the processing is performed, the user can more economically communicate with the mobile communication terminal 1 without paying special attention.

  Further, in the mobile communication system of the present embodiment, when the GSM network NT that is developing the communication service at the current position of the mobile communication terminal 1 is a GSM network NT to which no user has joined, the mobile communication terminal 1 mobile phone body 3 is a GSM network NT that has a roaming agreement with the GSM network NT, and determines whether there is a GSM network NT to which a user has subscribed. When there is a GSM network NT that has a roaming contract, the SIM card 2 corresponding to the GSM network NT that has a roaming contract is selected and the connection process to the GSM network NT is performed. Therefore, the user does not have to perform complicated work such as checking the roaming agreement. It is possible to use the GSM network NT by ring.

  Furthermore, in the mobile communication system of the present embodiment, when there are a plurality of GSM networks NT that have concluded roaming contracts with the GSM network NT that is developing communication services at the current location of the mobile communication terminal 1 The mobile phone main body 3 of the mobile communication terminal 1 selects the SIM card 2 corresponding to the GSM network NT having the lowest communication cost from among the plurality of GSM networks NT, and sends it to the GSM network NT. Since the connection process is performed, the user can more economically communicate with the mobile communication terminal 1 without paying special attention.

(Second Embodiment)
Next, another example of the mobile communication system to which the present invention is applied will be described. In the mobile communication system according to the present embodiment, the mobile phone body 3 of the mobile communication terminal 1 includes a plurality of communication means (a first wireless device and a second wireless device), and one of these wireless devices is used. When the GSM network NT that develops the communication service at the current position of the mobile communication terminal 1 is switched while performing communication, that is, while performing communication with one radio, When the communication terminal 1 moves from the service target area of one GSM network NT to the service target area of another GSM network NT, the connection between the GSM network NT before switching to one radio is continued. It is characterized in that connection processing with the GSM network NT after switching to the other radio device is performed in the state. In addition, since the basic configuration of the entire system and the processing executed by the mobile phone body 3 in the present embodiment is the same as that in the first embodiment described above, the following is the same as in the first embodiment. A duplicate description of the part is omitted, and the characteristic part of the mobile communication system of the present embodiment is described with a specific example.

  As described in the first embodiment, in the mobile communication terminal 1 to which the present invention is applied, the SIM card 2 used for the connection process to the GSM network NT in the scene as shown in FIG. The mobile phone body 3 automatically performs a process of switching from the SIM card 2a compatible with the network NT-A to the SIM card 2b compatible with the GSM network NT-B. There may be a case where such switching of the SIM card 2 is necessary while performing communication using the GSM network NT-A with the terminal 13. In such a case, in the first embodiment described above, the communication between the mobile communication terminal 1 and the other terminal 13 is interrupted along with the switching of the SIM card 2, and this is a problem for the user. It can also be a cause for dissatisfaction.

  Therefore, in the mobile communication system of the present embodiment, the mobile phone body 3 of the mobile communication terminal 1 is provided with a plurality of communication means such as a first radio and a second radio, for example, If the scene shown in FIG. 4 occurs during communication using the GSM network NT-A with the radio, the connection between one radio and the GSM network NT-A is continued. In this state, switching from the SIM card 2a to the SIM card 2b is performed, and connection processing between the other radio device and the GSM network NT-B is performed. Thereby, the SIM card 2 can be appropriately switched without interrupting communication between the mobile communication terminal 1 and the other terminal 13. Note that such processing can be easily realized by using the call waiting function or the three-party call function of another terminal 13 that is a communication partner.

  Here, in the mobile communication system of the present embodiment, as shown in FIG. 4, while the mobile phone body 3 of the mobile communication terminal 1 performs communication using the GSM network NT-A with the first wireless device. An example of processing characteristic of this embodiment will be described with reference to the sequence diagram of FIG.

  When the mobile phone terminal 3 of the mobile communication terminal 1 becomes a scene as shown in FIG. 4 while performing communication using the GSM network NT-A with the first radio, the GSM network NT- Control information is sent from the B exchange 12 to the mobile phone body 3 of the mobile communication terminal 1. In the mobile phone body 3, the network control information is analyzed as processing by the control program, and the GSM network NT that develops the communication service at the current position of the mobile communication terminal 1 is the GSM network NT-B. Identify. Then, the mobile phone body 3 confirms that the SIM card 2b corresponding to the GSM network NT-B is held in the card holder 3, reads the subscriber identification information from the SIM card 2b, and reads the GSM network NT- When using B, the local telephone number and user ID are set in the internal RAM or the like.

  Next, the cellular phone body 3 acquires the telephone number of the other terminal 13 that is the communication partner from the first wireless device as processing by the control program. Then, using information such as the local station telephone number, user ID, telephone number of the other terminal 13, etc., the second wireless device makes a call to the other terminal 13 via the GSM network NT-B, and GSM Wait for a response from network NT-B. At this time, the communication using the GSM network NT-A between the first wireless device and the other terminal 13 is continued by using the call waiting function or the three-party call function of the other terminal 13 as the communication partner. In this state, communication using the GSM network NT-B between the second wireless device and the other terminal 13 can be started.

  If there is a response from the GSM network NT-B to the second wireless device of the mobile phone body 3, the mobile phone body 3 has successfully connected the second wireless device and the GSM network NT-B. The determination is made and the connection from the first wireless device to the GSM network NT-A is disconnected as processing by the control program. When the disconnection to the GSM network NT-A is completed, the voice line with the other terminal 13 that is the communication partner is switched to a line using the GSM network NT-B as processing by the control program. Thereby, in the mobile communication terminal 1, even if the GSM network NT which is developing the communication service at the current position is switched while communicating with the other terminal 13, the mobile communication terminal 1 The SIM card 2 corresponding to the GSM network NT is appropriately switched without interrupting communication between the two.

  As described above, in the mobile communication system of the present embodiment, the mobile phone body 3 of the mobile communication terminal 1 is provided with a plurality of communication means such as the first wireless device and the second wireless device. When the GSM network NT that is developing the communication service at the current location of the mobile communication terminal 1 is switched while the other radio 13 is communicating with the other radio 13, In the state where the connection with the GSM network NT before switching is continued, the connection processing with the GSM network NT after switching with the other radio is performed. Therefore, according to the mobile communication system of this embodiment, switching of the SIM card 2 is appropriately performed without interrupting communication between the mobile communication terminal 1 and the other terminal 13 even in the above-described scene. The convenience can be improved.

  Note that the mobile communication system according to each embodiment described above is an application example of the present invention, and the present invention is not limited to the above example, as long as it does not depart from the technical idea of the present invention. Of course, various modifications are possible. For example, in each of the above-described embodiments, the mobile communication network is a GSM network NT that complies with the GSM standard, and the recording medium that stores the subscriber identification information is the SIM card 2. The present invention is widely applicable to mobile communication systems that use various mobile communication networks that require connection processing based on subscriber identification information.

It is a figure which shows schematic structure of the mobile communication system to which this invention is applied. It is the schematic diagram which illustrated the form in which a card holder hold | maintains several SIM cards, (a) is a figure which shows the example hold | maintained in the state which arranged the several SIM card in the plane, (b) is several SIM card | curd It is a figure which shows the example hold | maintained in the state piled up in the thickness direction. It is a flowchart which shows the flow of a process by the mobile telephone main body for connecting to the GSM network which is developing the communication service in the present position of a mobile communication terminal. It is a figure which shows typically a mode that the vehicle carrying the mobile communication terminal to which this invention was applied moved from the service target area of GSM network NT-A to the service target area of GSM network NT-B. In the mobile communication system to which the present invention is applied, the communication service is provided at the current position of the mobile communication terminal while communicating with the other terminal using one radio provided in the mobile phone body of the mobile communication terminal. It is a sequence diagram which shows the flow of the process implemented when the developing GSM network switches.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Mobile communication terminal 2 (2a, 2b, 2c, 2d) SIM card 3 Mobile phone body 4 Card holder 11 Wireless base station 12 Switch 13 Other terminal NT (NT-A, NT-B, NT-C, NT- D) GSM network

Claims (8)

  1. In a mobile communication terminal that performs connection processing to a mobile communication network based on subscriber identification information,
    Corresponding to a plurality of mobile communication networks having different service target areas, recording medium holding means for holding a plurality of recording media each storing subscriber identification information for each mobile communication network;
    Network identifying means for identifying a mobile communication network that is developing a communication service at the current location of the mobile communication terminal;
    Recording medium selecting means for selecting a recording medium storing subscriber identification information corresponding to the mobile communication network specified by the network specifying means among a plurality of recording media held by the recording medium holding means When,
    Network connection means for reading subscriber identification information from the recording medium selected by the recording medium selection means and performing connection processing to the mobile communication network specified by the network specifying means. Body communication terminal.
  2. When it is determined by the network specifying means that there is a mobile communication network that is developing a communication service at the current location of the mobile communication terminal, and there are a plurality of mobile communication networks to which the user has subscribed The recording medium selecting means selects a recording medium storing subscriber identification information corresponding to the mobile communication network having the lowest communication cost among the plurality of mobile communication networks. The mobile communication terminal according to claim 1.
  3. When the mobile communication network specified by the network specifying means is a mobile communication network that has not been subscribed to a user, the mobile communication network has concluded a roaming agreement with the mobile communication network, Roaming determination means for determining whether there is a mobile communication network to which a user is subscribed,
    When the roaming determination means determines that there is a mobile communication network that has concluded the roaming contract, the subscriber corresponding to the mobile communication network that has the recording medium selection means that has concluded the roaming contract The mobile communication terminal according to claim 1, wherein a recording medium in which identification information is stored is selected.
  4. When it is determined by the roaming determination means that there are a plurality of mobile communication networks as the mobile communication network that has concluded the roaming contract, the recording medium selection means includes the plurality of mobile communication networks. 4. The mobile communication terminal according to claim 3, wherein a recording medium storing subscriber identification information corresponding to a mobile communication network with the lowest communication cost is selected.
  5. A plurality of communication means for performing communication using a mobile communication network;
    If the mobile communication network that is developing the communication service at the current location of the mobile communication terminal is switched while performing communication with one of the plurality of communication means, the network connection Connection between the mobile communication network after switching to another communication means in a state in which the connection is continued between the communication means and one mobile communication network before switching. The mobile communication terminal according to claim 1, wherein the mobile communication terminal performs processing.
  6. 6. The mobile communication terminal according to claim 1, wherein the mobile communication network is a GSM (Global System for Mobile communication) network, and the recording medium is a SIM (Subscriber Identification Module) card. .
  7. In a mobile communication system in which a mobile communication terminal performs a connection process to a mobile communication network based on subscriber identification information and enables communication using the mobile communication network.
    The mobile communication terminal is
    Corresponding to a plurality of mobile communication networks with different service target areas, recording medium holding means for holding a plurality of recording media each storing subscriber identification information for each mobile communication network;
    Network identifying means for identifying a mobile communication network that is developing a communication service at the current location of the mobile communication terminal;
    Recording medium selecting means for selecting a recording medium in which subscriber identification information corresponding to the mobile communication network specified by the network specifying means is stored among a plurality of recording media held in the recording medium holding means When,
    Network connection means for reading subscriber identification information from the recording medium selected by the recording medium selecting means and performing connection processing to the mobile communication network specified by the network specifying means. Body communication system.
  8. A terminal connection method in which a mobile communication terminal performs connection processing to a mobile communication network based on subscriber identification information,
    The mobile communication terminal is
    Corresponding to a plurality of mobile communication networks having different service target areas, a plurality of recording media each storing subscriber identification information for each mobile communication network are held,
    Of the plurality of recording media, select a recording medium storing subscriber identification information corresponding to a mobile communication network that is developing a communication service at the current location of the mobile communication terminal, and select A terminal connection method comprising: reading subscriber identification information from a recorded medium and performing connection processing to the mobile communication network.
JP2005020316A 2005-01-27 2005-01-27 Mobile communication terminal, mobile communication system, and terminal connection method Pending JP2006211280A (en)

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JP2010087566A (en) * 2008-09-29 2010-04-15 Fujitsu Ltd Communications apparatus, data storing apparatus, and connection method
CN101287225B (en) 2008-05-22 2012-09-26 德信无线通讯科技(北京)有限公司 Information searching method of mobile communication terminal and mobile communication terminal thereof
JP2012524502A (en) * 2009-04-20 2012-10-11 インターデイジタル パテント ホールディングス インコーポレイテッド Multiple domain systems and domain ownership
JP2012529857A (en) * 2009-06-08 2012-11-22 クアルコム,インコーポレイテッド Method and apparatus for updating rules governing switching of virtual SIM service contracts
JP2012257304A (en) * 2009-12-17 2012-12-27 Intel Corp Secure subscriber identification module service
JP2013507798A (en) * 2009-10-08 2013-03-04 コネクティフ ソリューションズ インク.Connectif Solutions Inc. Wireless multi-network telemetry system, method and integrated circuit chip
JP2013198157A (en) * 2012-03-16 2013-09-30 Mediatek Inc Method for controlling channel activation related to multiplex radio communication technique sharing common radio resource, and device using the same method
US8634828B2 (en) 2009-06-08 2014-01-21 Qualcomm Incorporated Method and apparatus for switching virtual SIM service contracts based upon a user profile
US8649789B2 (en) 2009-06-08 2014-02-11 Qualcomm Incorporated Method and apparatus for switching virtual SIM service contracts when roaming
JP2014506435A (en) * 2011-01-04 2014-03-13 クゥアルコム・インコーポレイテッドQualcomm Incorporated Method, apparatus, and computer-readable medium for multi-SIM-UE sending a busy status message in response to receiving a call
US8676180B2 (en) 2009-07-29 2014-03-18 Qualcomm Incorporated Virtual SIM monitoring mode for mobile handsets
US8811969B2 (en) 2009-06-08 2014-08-19 Qualcomm Incorporated Virtual SIM card for mobile handsets
KR101604770B1 (en) * 2009-11-20 2016-03-18 엘지전자 주식회사 Dual sim mobile terminal and operating method thereof
JP2017510105A (en) * 2013-12-23 2017-04-06 ジェムアルト エスアー Method and apparatus for accessing services
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JP2018014765A (en) * 2014-01-17 2018-01-25 シャンハイ・シュール・(クーテック)・インフォメーション・テクノロジー・カンパニー・リミテッドShanghai Chule (Cootek) Information Technology Co, Ltd. Cloud identification method, device and system of dual sim mobile communication device

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CN101287225B (en) 2008-05-22 2012-09-26 德信无线通讯科技(北京)有限公司 Information searching method of mobile communication terminal and mobile communication terminal thereof
JP2010087566A (en) * 2008-09-29 2010-04-15 Fujitsu Ltd Communications apparatus, data storing apparatus, and connection method
JP2012524502A (en) * 2009-04-20 2012-10-11 インターデイジタル パテント ホールディングス インコーポレイテッド Multiple domain systems and domain ownership
US8634828B2 (en) 2009-06-08 2014-01-21 Qualcomm Incorporated Method and apparatus for switching virtual SIM service contracts based upon a user profile
JP2012529857A (en) * 2009-06-08 2012-11-22 クアルコム,インコーポレイテッド Method and apparatus for updating rules governing switching of virtual SIM service contracts
US8811969B2 (en) 2009-06-08 2014-08-19 Qualcomm Incorporated Virtual SIM card for mobile handsets
US8639245B2 (en) 2009-06-08 2014-01-28 Qualcomm Incorporated Method and apparatus for updating rules governing the switching of virtual SIM service contracts
US8649789B2 (en) 2009-06-08 2014-02-11 Qualcomm Incorporated Method and apparatus for switching virtual SIM service contracts when roaming
US8676180B2 (en) 2009-07-29 2014-03-18 Qualcomm Incorporated Virtual SIM monitoring mode for mobile handsets
JP2013507798A (en) * 2009-10-08 2013-03-04 コネクティフ ソリューションズ インク.Connectif Solutions Inc. Wireless multi-network telemetry system, method and integrated circuit chip
US8988249B2 (en) 2009-10-08 2015-03-24 Connectif Solutions Inc. System, method and integrated circuit chip for wireless multi-network meter reading
KR101604770B1 (en) * 2009-11-20 2016-03-18 엘지전자 주식회사 Dual sim mobile terminal and operating method thereof
JP2012257304A (en) * 2009-12-17 2012-12-27 Intel Corp Secure subscriber identification module service
JP2014506435A (en) * 2011-01-04 2014-03-13 クゥアルコム・インコーポレイテッドQualcomm Incorporated Method, apparatus, and computer-readable medium for multi-SIM-UE sending a busy status message in response to receiving a call
JP2013198157A (en) * 2012-03-16 2013-09-30 Mediatek Inc Method for controlling channel activation related to multiplex radio communication technique sharing common radio resource, and device using the same method
JP2017510105A (en) * 2013-12-23 2017-04-06 ジェムアルト エスアー Method and apparatus for accessing services
JP2018014765A (en) * 2014-01-17 2018-01-25 シャンハイ・シュール・(クーテック)・インフォメーション・テクノロジー・カンパニー・リミテッドShanghai Chule (Cootek) Information Technology Co, Ltd. Cloud identification method, device and system of dual sim mobile communication device
JP2017135458A (en) * 2016-01-25 2017-08-03 レノボ・シンガポール・プライベート・リミテッド Information processing unit

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