WO2017169904A1 - 通信システム、携帯端末、移動管理装置及び通信制御方法 - Google Patents
通信システム、携帯端末、移動管理装置及び通信制御方法 Download PDFInfo
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- WO2017169904A1 WO2017169904A1 PCT/JP2017/010929 JP2017010929W WO2017169904A1 WO 2017169904 A1 WO2017169904 A1 WO 2017169904A1 JP 2017010929 W JP2017010929 W JP 2017010929W WO 2017169904 A1 WO2017169904 A1 WO 2017169904A1
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- gateway
- mobile terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
- H04W8/08—Mobility data transfer
- H04W8/12—Mobility data transfer between location registers or mobility servers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/02—Access restriction performed under specific conditions
- H04W48/04—Access restriction performed under specific conditions based on user or terminal location or mobility data, e.g. moving direction, speed
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
- H04M15/49—Connection to several service providers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
- H04M15/70—Administration or customization aspects; Counter-checking correct charges
- H04M15/77—Administration or customization aspects; Counter-checking correct charges involving multiple accounts per user
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
- H04M15/80—Rating or billing plans; Tariff determination aspects
- H04M15/8033—Rating or billing plans; Tariff determination aspects location-dependent, e.g. business or home
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
- H04M15/80—Rating or billing plans; Tariff determination aspects
- H04M15/8038—Roaming or handoff
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
- H04M15/80—Rating or billing plans; Tariff determination aspects
- H04M15/8044—Least cost routing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
- H04M15/80—Rating or billing plans; Tariff determination aspects
- H04M15/8044—Least cost routing
- H04M15/8055—Selecting cheaper transport technology for a given service
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
- H04W4/021—Services related to particular areas, e.g. point of interest [POI] services, venue services or geofences
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/24—Accounting or billing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/17—Selecting a data network PoA [Point of Attachment]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/18—Selecting a network or a communication service
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/11—Allocation or use of connection identifiers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/15—Setup of multiple wireless link connections
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/20—Manipulation of established connections
- H04W76/25—Maintenance of established connections
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
- H04W8/04—Registration at HLR or HSS [Home Subscriber Server]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
- H04W8/06—Registration at serving network Location Register, VLR or user mobility server
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/16—Gateway arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/14—Backbone network devices
Definitions
- the present invention relates to a communication system, a mobile terminal, a mobility management device, and a communication control method.
- the fourth generation mobile communication system (4G) includes an access network using a radio communication technology such as LTE (Long Term Evolution) and a core network called EPC (Evolved Packet Core).
- a radio communication technology such as LTE (Long Term Evolution) and a core network called EPC (Evolved Packet Core).
- LTE Long Term Evolution
- EPC Evolved Packet Core
- a home operator an operator with whom the user of the mobile terminal makes a contract for the mobile terminal.
- Non-Patent Document 1 discloses a roaming technology that enables the use of the same mobile terminal even when a user of the mobile terminal moves to a region / country different from the region / country where the home operator provides services. Disclosure.
- Non-Patent Document 2 discloses the 5G roaming technology as with the EPC.
- EPC when a mobile terminal (UE) connects to the Internet or the like, a communication path is established between the mobile terminal and the base station eNB (Evolved Node B) and PGW (Packet Data Network Gateway). Data communication is performed via.
- the PGW in EPC is separated into a C-Plane (control signal) function and a U-Plane (data transfer) function.
- the MME in EPC corresponds to a 5G MM (Mobility Management) function and an SM (Session Management) function.
- a home route method (hereinafter referred to as a home method) is known as a first method when a portable terminal is used overseas. In the home method, an eNB and an MME managed by a local operator are used, and an HSS (Home Subscriber Server) and a PGW managed by the home operator are used.
- the communication fee is calculated based on the number of packets that have passed through the PGW.
- the communication fee is calculated based on the number of packets that have passed through the PGW managed by the home operator.
- IPX IP exchange
- a local breakout method (hereinafter referred to as a local method) is known as a second method when a mobile terminal is used overseas.
- the PGW in addition to the eNB and the MME, the PGW also uses the facilities of the local operator.
- the local operator since the local operator's PGW is used, the local operator generates billing information. Even though the user has a contract with the home operator, the home operator cannot obtain reliable billing information.
- the user attaches a SIM (Subscriber Identify Module) card contracted with a local operator to the portable terminal when using the portable terminal overseas.
- SIM Subscriber Identify Module
- a mobile terminal a mobility management device that executes mobility management of the mobile terminal, a first gateway that connects the mobile terminal to a first network, and a mobile terminal that connects to the second network
- a second communication gateway is provided.
- the mobility management device determines whether to connect the portable terminal to the first network via the first gateway or to connect the portable terminal to the second network via the second gateway. Based on the first contract information for connecting to the first network via the first gateway or the second terminal for connecting to the second network via the second gateway. 2. Switch whether to use contract information.
- FIG. 1 is a diagram illustrating a configuration example of a communication system according to the present embodiment.
- equipment of a home operator network hereinafter referred to as home network
- UE mobile terminal
- roaming network equipment of a local operator network
- the home operator manages heNB2, hMME3, hHSS4, hDATA_PGW5, hIMS_PGW6, hPCRF7, and hSMSC / AAA / OTA8.
- the local operator manages the veNB 102, the vMME 103, the vDATA_PGW 105, the vPCRF 107, and the vAAA / SPR 108.
- the first h in the names of the components of the communication system indicates that it is a home operator facility
- the first v indicates that it is a local operator facility.
- the country in which the home operator provides the service differs from the country in which the local operator provides the service.
- “domestic” means a country in which a home operator provides a service
- “overseas” means a country different from the country in which the home operator provides a service.
- the heNB 2 is an eNB in a base station, for example, LTE, and transmits / receives data to / from the mobile terminal 1 via a wireless communication line.
- hMME3 is MME (Mobility Management Entity) in LTE, for example.
- the hMME 3 is a mobility management device that manages location registration, calling, and handover between base stations of the mobile terminal 1.
- the hMME 3 connects the mobile terminal 1 to the external network via the hDATA_PGW5 based on the result of determining whether the mobile terminal 1 is connected to the external network via the hDATA_PGW5 or the mobile terminal 1 is connected to the external network via the vDATA_PGW105. It is possible to switch between using normal contract information for connecting to a network and using temporary contract information for connecting to an external network via the vDATA_PGW 105.
- the hHSS 4 is a database that manages user information such as the telephone number and terminal identification number of the mobile terminal 1.
- the hHSS 4 is, for example, a contract information management apparatus that manages APN (Access) Point Name) that is contract information between a user and a home operator.
- APN Access
- the hHSS 4 determines whether the user of the mobile terminal 1 is overseas or domestic, and when determining that the user of the mobile terminal 1 is overseas, the hHSS 4 sends a temporary APN, which is temporary contract information for connecting to an external network using the local method, to the vMME 103. Send.
- hDATA_PGW5 home
- Gateway is a home gateway for the portable terminal 1 to transmit / receive data between external networks, such as the internet, via heNB2, and the delivery of an IP address to the portable terminal 1 or User authentication at the time of bearer establishment is executed.
- HIMS_PGW6 home IP Multimedia Subsystem Packet Data Network Gateway
- IMS IP Multimedia Subsystem
- the hMME 3 can send and receive SMS (Short Message Service) messages via the hIMS_PGW 6.
- HPCRF7 home Policy and Charging Rule function
- policy and Charging Rule function is a server having a function for setting policies such as priority control and charging rules according to services.
- HSMSC / AAA / OTA8 home Short Messaging Service Center / Authentication Authorization Accounting / Over the Air
- AAA / OTA8 home Short Messaging Service Center / Authentication Authorization Accounting / Over the Air
- VeNB102 is a base station corresponding to home operator's heNB2.
- the vMME 103 is a mobility management device corresponding to the home operator hMME3.
- VDATA_PGW 105 corresponds to the home operator hDATA_PGW5, and is a local gateway for the mobile terminal 1 to transmit and receive data to and from an external network such as the Internet via the veNB 102.
- the vPCRF 107 is a server having a charging function corresponding to the hPCRF 7 of the home operator, and functions as a policy control device.
- the vPCRF 107 issues a policy for connecting to an external network via the vDATA_PGW 105 when receiving a communication path establishment request using the local method from the vMME 103.
- the vAAA / SPR 108 functions as a policy management device that manages the policies of temporary APN subscribers.
- the vAAA / SPR 108 manages the policy issued by the vPCRF 107 by storing it in a storage medium.
- the equipment managed by the home operator and the equipment managed by the local operator can communicate with each other via the GRX / IPX 200 which is a relay network.
- FIG. 2 is a diagram for explaining the outline of the communication control method of the present embodiment.
- the mobile terminal 1 of the present embodiment can select whether to use a home method or a local method, and is characterized by changing the APN depending on which method is used.
- the process for changing the APN used by the mobile terminal 1 in cooperation with the equipment of the home operator and the equipment of the local operator Is executed.
- the control device executes APN control and temporary APN subscriber policy control for temporarily receiving the service of the local operator.
- the user of the terminal 1 concludes a contract for receiving provision of a temporary communication service with the local operator.
- the user can perform online contract processing after establishing a communication path using the temporary APN.
- a communicable period, a communicable capacity, etc. are defined, and when the user concludes the contract, the local operator can charge and charge the user without going through the home operator. Become.
- the contract information management device manages the temporary APN and the temporary APN subscriber policy.
- the user can perform data communication in a local manner until a period defined in the contract elapses or until a communication having a capacity defined in the contract is executed.
- a procedure for generating filter information for preventing the data transmitted by the mobile terminal 1 from being sent to the external network is executed.
- the portable terminal 1 is in a state where it cannot perform communication in the local mode.
- the contract made by the user expires, if the contract is made again, communication in the local system can be resumed.
- the home operator's network executes a process of changing to an APN for communicating in the home operator's environment, and the mobile terminal 1 can access the external network via the hDATA_PGW5 It becomes like this.
- FIG. 3 is a diagram illustrating a configuration of the mobile terminal 1.
- the mobile terminal 1 includes a communication unit 11, an operation unit 12, a display unit 13, a storage unit 14, and a CPU 15.
- the CPU 15 includes an operation reception unit 151, a display control unit 152, a transmission unit 153, a reception unit 154, and a control unit 155.
- the communication unit 11 is a wireless communication unit, and transmits and receives radio waves to and from the heNB 2 or the veNB 102.
- the operation unit 12 is a device operated by a user, and is, for example, a touch panel.
- the display unit 13 is a device that displays information, for example, a liquid crystal display.
- the storage unit 14 is a storage medium including a ROM (Read Only Memory) and a RAM (Random Access Memory).
- the storage unit 14 stores a program executed by the CPU 15 (Central Processing Unit) and various data used when the CPU 15 executes processing.
- CPU 15 Central Processing Unit
- the CPU 15 functions as an operation reception unit 151, a display control unit 152, a transmission unit 153, a reception unit 154, and a control unit 155 by executing a program stored in the storage unit 14.
- the operation accepting unit 151 accepts an operation performed by the user in the operation unit 12 and notifies the control unit 155 of the operation content.
- the operation reception unit 151 receives a selection operation of using a home method connected to an external network via the hDATA_PGW5 or a local method connecting to the external network via the vDATA_PGW105.
- the operation reception unit 151 notifies the control unit 155 of selection information indicating the selected method.
- the display control unit 152 displays information on the display unit 13 based on the control of the control unit 155.
- the transmission unit 153 transmits data via the communication unit 11 based on the control of the control unit 155. For example, the transmission unit 153 transmits a method switching request including selection information output from the operation reception unit 151 to the vMME 103.
- the receiving unit 154 receives data via the communication unit 11.
- the receiving unit 154 receives a temporary APN that is temporary contract information for connecting to an external network using a local method, for example.
- the receiving unit 154 notifies the control unit 155 of the received temporary APN.
- the control unit 155 determines the type of APN that is contract information used when the transmission unit 153 transmits data.
- the control unit 155 uses the domestic APN, which is usually contract information, and temporarily contracts with the local operator when communicating in the local operator's environment.
- the temporary APN which is the temporary contract information given by is used.
- the control unit 155 Upon receiving the notification of the temporary APN from the receiving unit 154, the control unit 155 stores the temporary APN in the storage unit 14, and reads and uses the temporary APN stored in the storage unit 14 when transmitting data.
- FIG. 4 is a diagram illustrating a configuration of the vMME 103.
- the vMME 103 includes a communication unit 31, a storage unit 32, and a CPU 33.
- the communication unit 31 is an interface for communicating with other devices such as heNB2, hHSS4, and hDATA_PGW5.
- the storage unit 32 is a storage medium including a ROM and a RAM.
- the storage unit 32 stores programs executed by the CPU 33 and various data used when the CPU 33 executes processing.
- the CPU 33 functions as a reception unit 331, a transmission unit 332, and a control unit 333 by executing a program stored in the storage unit 32.
- the receiving unit 331 receives a method switching request including selection information indicating whether the home method is selected or the local method is selected from the mobile terminal 1.
- the transmitting unit 332 transmits a temporary APN for connecting to the external network using the local method. 1 to send.
- FIG. 5 is a communication sequence diagram illustrating a procedure when changing the APN based on the operation of the user of the mobile terminal 1.
- the communication sequence shown in FIG. 5 starts from a state where the APN is set to the home method.
- the mobile terminal 1 holds two APNs, “ims” for connecting to the IMS and “internet” for connecting to the Internet.
- the APN “internet” is an APN for connecting to the Internet via the hDATA PGW5.
- the mobile terminal 1 transmits a short message including an APN change request message for changing the APN that is contract information included in the Body part of the SIP message to the vMME 103. (S11).
- the vMME 103 transmits the received APN change request message to the hSMSC / AAA / OTA8 via the GRX / IPX200 and the hIMS_PGW6.
- the portable terminal 1 sets a message in which a predetermined telephone number meaning a request for change to the temporary APN is set in the SMS destination information and the telephone number (MSISDN) of the portable terminal 1 is set in the transmission source information.
- the mobile terminal 1 may transmit a short message to the hSMSC / AAA / OTA 8 without going through the vMME 103.
- the hSMSC / AAA / OTA8 uses the temporary APN control function to collate the SMS mapping destination phone number contained in the Body part of the received SIP message with its own temporary APN mapping table, and the two match. Determine whether or not. If the two match, the hSMSC / AAA / OTA 8 transmits an APN change request message including the MSISDN of the transmission source information and the temporary APN corresponding to the telephone number to the hHSS 4 (S12).
- the mapping table is a table in which the telephone number of the mobile terminal 1 and the temporary APN are associated with each country or each communication operator, for example, for a user who wants to temporarily connect with a specific country or communication operator. It is used to provide a temporary APN.
- the telephone number included in the SMS destination information indicates the local operator
- the mapping table shows the correspondence between the MSISDN and the telephone number of the mobile terminal 1 and the temporary APN for each telephone number indicating the local operator. Show.
- the hSMSC / AAA / OTA 8 allows the mobile terminal 1 to be temporarily connected.
- the temporary APN is determined based on the MSISDN and the telephone number of the mobile terminal 1.
- the temporary APN management function determines whether or not the received temporary APN is allowed for the user corresponding to the MSISDN. For example, the hHSS 4 can store, as the temporary APN subscriber attribute, information on whether or not the user has subscribed to the temporary APN service, and can determine whether or not the temporary APN is permitted based on the information. Further, a list of APNs allowed by the hHSS 4 is held, and whether or not the temporary APN is allowed can be determined based on whether the APN information included in the APN change request message matches the list information. . When the hHSS 4 determines that the temporary APN is allowed, the hHSS 4 transmits an APN change response message indicating the determination result to the hSMSC / AAA / OTA 8 (S13).
- the hSMSC / AAA / OTA 8 When the hSMSC / AAA / OTA 8 receives the APN change response message, the hSMSC / AAA / OTA 8 sets the telephone number indicating APN change approval in the transmission source information, sets the telephone number of the mobile terminal 1 in the transmission destination information, and sets the temporary APN in the text.
- the set APN change request response message is transmitted to the vMME 103 (S14).
- the vMME 103 transfers the received APN change request response message to the mobile terminal 1. In this way, the vMME 103, when the selection information included in the method switching request received from the mobile terminal 1 indicates that the local method is used, the temporary MPN for connecting to the external network using the local method.
- the SMS received from the hSMSC / AAA / OTA 8 and including the received temporary APN in the text is transmitted to the mobile terminal 1.
- the portable terminal 1 When receiving the SMS, the portable terminal 1 stores the temporary APN specified in the received SMS text in the storage unit 14 by the APN change function, and changes the APN to be used to the temporary APN (S15). In FIG. 5, this temporary APN is “temp”.
- the mobile terminal 1 When the communication path is set using the APN before the change, the mobile terminal 1 performs a process of deleting the communication path setting (S16). Note that the procedure shown in FIG. 5 can also be used to return to the default APN from the state where the temporary APN is used.
- FIG. 6 is a communication sequence diagram illustrating a procedure for establishing a communication path using a temporary APN. This procedure is performed in the roaming destination area after executing the procedure shown in FIG. By this procedure, the mobile terminal 1 selects a PGW to be connected using information of the APN and establishes a communication path.
- a communication path establishment request including a temporary APN (NAS-ECM: PDN Connectivity Request) is transmitted to the vMME 103 (S21).
- the communication path establishment request functions as a message for requesting a contract for using the vDATA_PGW 105 for connecting to the external network to the local operator.
- This message may be included in an attach request (NAS-EMM: Attach Request) sent from the mobile terminal 1 when the power is turned on, or may be included in the S1AP message because it passes through the veNB 102.
- UE identification information (IMSI, S1AP-ID, etc.) is included in any of these messages.
- the vMME 103 When the vMME 103 receives the communication path establishment request message, the vMME 103 identifies the mobile terminal 1 based on the UE identification information, and with respect to the hHSS 4, subscriber information (IMSI), area information (ECGI, TAI, etc.) and MME information (Origin) A subscriber information inquiry (S6a: ULR) including -Host, "Origin-realm,” PLMN-ID, etc.) is transmitted (S22).
- IMSI subscriber information
- ECGI area information
- TAI TAI
- OFP MME information
- the hHSS 4 Upon receiving the subscriber information inquiry, the hHSS 4 uses the temporary APN management function to determine whether the user of the mobile terminal 1 is overseas (roaming) or domestic (non-roaming) based on the area information or MME information. Judge whether there is. Here, it is determined that the user is overseas.
- the response of the subscriber information including the overseas APN information list (including the domestic APN and temporary APN) and the telephone number (MSISDN) of the mobile terminal 1 (S6a: ULA) is returned (S23).
- the response of the subscriber information may include the temporary APN subscriber attribute.
- the hHSS 4 determines that the user of the mobile terminal 1 is in the country, the hHSS 4 returns a response of subscriber information including the domestic APN and the phone number of the mobile terminal 1.
- the hHSS 4 stores the visited overseas network information indicating that the user of the mobile terminal 1 has determined that the user is overseas. If step S21 is not included in the attach request, and subscriber information has already been acquired by performing steps S22 and S23 separately, step S22 and S23 may be skipped.
- the vMME 103 determines whether the temporary APN included in the communication path establishment request is included in the APN information list received from the hHSS 4 by the temporary APN control function. If the received APN information list includes a temporary APN, the vMME 103 recognizes that the use of the temporary APN is permitted. Further, the vMME 103 performs temporary APN subscriber information determination based on the received temporary APN subscriber attribute, and if it is determined that the subscriber is a temporary APN service subscriber, the use of the temporary APN is determined based on the user area information. May be determined to be permitted.
- the vMME 103 determines the type of the APN received from the mobile terminal 1, and determines that the connection destination PGW is the vDATA_PGW 105 if the APN received from the mobile terminal 1 is a temporary APN. Further, when the temporary APN is not included in the APN information from the hHSS 4, the vMME 103 recognizes that the temporary APN is not permitted and uses the domestic APN. That is, the vMME 103 connects the mobile terminal 1 to the external network via the hDATA_PGW5 based on the comparison result between the contract information included in the communication path establishment request and the temporary APN acquired from the hHSS4, or via the vDATA_PGW105. To determine whether to connect the portable terminal 1 to an external network.
- the vMME 103 When the vMME 103 determines the connection destination PGW as the vDATA_PGW 105, the vMME 103 transmits a communication path establishment request (GTPv2: Create Create Session Request) message including the terminal identification information (IMSI and MSISDN) and the temporary APN to the vDATA_PGW 105 via the vSGW ( S24).
- GTPv2 Create Create Session Request
- the vDATA_PGW 105 determines that the received communication path establishment request includes the temporary APN
- the vDATA_PGW 105 requests the vPCRF 107 a policy request including the temporary APN and the terminal identification information (IMSI and MSISDN) in order to generate billing information ( Gx: CCR) is transmitted (S25).
- the vPCRF 107 determines that the temporary APN is included in the received policy request by the temporary APN subscriber policy control function, the vPCRF 107 transmits a subscriber policy request to the vAAA / SPR 108 in order to obtain temporary subscriber policy information. (S26).
- the vAAA / SPR 108 determines whether there is temporary subscriber policy information by the temporary subscriber policy management function. When the vAAA / SPR 108 determines that the temporary subscriber policy information does not exist, the vAAA / SPR 108 returns a subscriber policy no response indicating that there is no subscriber policy information to the vPCRF 107 (S27). When the vPCRF 107 receives the no subscriber response in step S27, the vPCRF 107 transmits a subscriber policy generation request for generating temporary subscriber policy information to the vAAA / SPR 108 by the temporary APN subscriber policy control function (S28). ).
- the vAAA / SPR 108 Upon receipt of the subscriber policy generation request, the vAAA / SPR 108 uses the temporary subscriber policy management function to allow temporary subscriber policy including destination-restricted filter information TFT (Traffic Flow Template) that allows only the IP address of the online contract server. Generate information.
- TFT Traffic Flow Template
- the vAAA / SPR 108 transmits to the vPCRF 107 a subscriber policy response in which the generated temporary APN subscriber policy information is added to the message.
- the vAAA / SPR 108 determines that the temporary subscriber policy information exists, the vAAA / SPR 108 transmits to the existing vPCRF 107 without generating a subscriber policy response with the temporary subscriber policy information added to the message (S29).
- the vPCRF 107 When the vPCRF 107 receives the subscriber policy response including the temporary subscriber policy information, the vPCRF 107 transmits the received policy response (Gx: CCA) including the temporary subscriber policy information to the vDATA_PGW 105 (S30).
- the vDATA_PGW 105 receives the policy response message, the vDATA_PGW 105 transmits a communication path establishment success response (GTPv2: Create Create Session Response) including the policy information (TFT or the like) to the vMME 103 (S31).
- GTPv2 Create Create Session Response
- the vMME 103 When receiving the communication path establishment success response, the vMME 103 performs a communication path establishment process on the mobile terminal 1 (S32).
- the filter information TFT whose destination is restricted is set in the policy information in steps S28 and S29, so that the user of the portable terminal 1 can connect only to the contract server of the local operator. It becomes. If the user of the mobile terminal 1 makes an online contract and the step S21 is executed in a state where the opening of data communication is completed, that is, if establishment of a communication path is requested after the second time, the user of the mobile terminal 1 Is a procedure that does not include steps S28 and S29, and data communication such as Internet connection can be performed based on filter information whose destination is not restricted.
- FIG. 7 is a communication sequence diagram showing a data communication establishment procedure based on an online contract.
- the mobile terminal 1 can access the Internet by the data communication opening procedure based on the online contract.
- the temporary subscriber information of the vAAA / SPR 108 is updated, and communication with the Internet is opened.
- the mobile terminal 1 uses the communication path restricted by the destination-restricted filter information TFT to access the vAAA / SPR 108 as the contract server by HTTP. Then, a screen for making an online contract for accessing the Internet via the vDATA_PGW 105 managed by the local operator is displayed (S41).
- APN “Internet / Only Contract Web” in FIG. 7 is established with APN “temp”, but shows a state where the connection to the external network is restricted by the IP filter function (TFT function) of the local operator.
- the contract server since the contract server requires user identification information, it may be requested to input a telephone number on the Web browser, or the telephone number may be included on the HTTP header.
- information such as a contract period (for example, one week) and a contract capacity (for example, 1 GB) can be input.
- the vAAA / SPR 108 compares the user identification information with the stored temporary subscriber policy information by the temporary subscriber policy management function, and determines whether or not the temporary subscriber policy information has been generated. If the temporary subscriber policy information is generated, the vAAA / SPR 108 updates the temporary subscriber policy information based on the communication contract requested by the user. Here, the vAAA / SPR 108 deletes the destination restriction condition from the filter information TFT whose destination is restricted.
- the vAAA / SPR 108 transmits a change notification including the temporary subscriber policy information including the updated filter information TFT to the vPCRF 107 (S42).
- the vPCRF 107 transmits temporary subscriber policy information to the vDATA_PGW 105 (S43).
- the vPCRF 107 notifies the mobile terminal 1 that the policy information has been updated (S44). Based on the updated filter information, the mobile terminal 1 can perform Internet communication that is not restricted in access.
- the vDATA_PGW 105 receives a contract operation after displaying the contract screen on the mobile terminal and then receives a communication path establishment request including the temporary APN from the mobile terminal 1, the vDATA_PGW 105 receives the mobile terminal 1 via the vDATA_PGW 105. Can access the external network.
- FIG. 8 is a communication sequence diagram illustrating a filter information generation procedure when the contract period expires.
- the local operator filters the data communication for the Internet from the mobile terminal 1 by the filter information generation procedure at the time of expiration of the contract. Prevent 1 from connecting to the Internet.
- the vDATA_PGW 105 counts the amount of data communication such as the Internet, and when it exceeds the available amount of communication, the vDATAF PGW 105 notifies the vPCRF 107 that the amount of communication of the mobile terminal 1 has exceeded the allowable amount of communication. Is transmitted (S51). When the vPCRF 107 receives a message indicating that the communication amount has been exceeded, the temporary APN subscriber policy control function notifies the vAAA / SPR 108 that the policy is to be changed due to the excess data communication amount (S52).
- the temporary APN subscriber policy management function updates the temporary APN subscriber policy information including the filter information TFT whose destination is restricted, and the updated temporary APN subscription.
- a subscriber information update notification message including subscriber policy information is transmitted to the vPCRF 107 (S53).
- the vPCRF 107 transmits a policy update notification including temporary APN subscriber policy information included in the subscriber information update notification to the vDATA_PGW 105 (S54).
- the vDATA_PGW 105 transmits the policy information including the filter information TFT whose destination is restricted, received by the policy update notification, to the mobile terminal 1.
- the mobile terminal 1 can be connected only to the contract server of the local operator, and other communication is restricted by the vDATA_PGW 105.
- FIG. 9 is a communication sequence diagram showing a procedure for returning the method for accessing the external network to the home method.
- the temporary APN used when changing to the local system is returned to the original APN, so that when returning to the country from abroad, communication for accessing the Internet via the domestic PGW hDATA_PGW5 It is possible to automatically establish a road.
- the mobile terminal 1 transmits a communication path establishment request message (NAS-ECM: “PDN” Connectivity ”Request) including the temporary APN to the hMME 3 in order to establish a communication path (S61).
- This message may be included in an attach request (NAS-EMM: Attach Request) sent by the mobile terminal 1 when the power is turned on, and is included in the S1AP message because it passes through the mobile terminal 1. Also good.
- UE identification information IMSI, S1AP-ID, etc. is included in any of these messages.
- the hMME 3 When the hMME 3 receives the communication path establishment request message, the hMME 3 specifies the mobile terminal 1 based on the UE identification information, and the subscriber information (IMSI), area information (ECGI, TAI, etc.) and MME information (Origin) -Subscriber information inquiry (S6a: ULR) on which (Host, [Origin-realm, [PLMN-ID, etc.]) is placed is performed (S62).
- IMSI subscriber information
- ECGI area information
- TAI TAI
- S6a MME information
- ULR User Location Register
- the temporary APN management function determines whether the user of the mobile terminal 1 is overseas (roaming) or domestic (non-roaming) based on the area information or MME information.
- the hHSS 4 returns a response of the subscriber information including the domestic APN and the phone number of the portable terminal 1 (S63). Note that step S61 is not included in the attach request, and if the subscriber information has already been acquired by performing steps S62 and S63 by separate attachment, steps S62 and S63 can be skipped.
- HMME3 determines whether or not the temporary APN is included in the APN information returned from hHSS4 by the temporary APN control function.
- the temporary APN is not included in the APN information returned from the hSS 4.
- the hMME 3 recognizes that the temporary APN is not allowed, and establishes a communication path using the domestic APN instead of the temporary APN set by the mobile terminal 1.
- the hMME 103 performs temporary APN subscriber information determination based on the received temporary APN subscriber attribute, and includes a PLMNID included in the non-subscriber of the temporary APN service or the subscriber of the temporary APN service and the user's area information. May be recognized as non-permitted for temporary APN.
- the hMME 3 transmits and receives a communication path establishment request (GTPv2: Create Session Request / Response) message with the domestic APN to the hDATA_PGW 5 (S64).
- GTPv2 Create Session Request / Response
- the hMME 3 processes the default bearer establishment request with the policy information of the domestic APN for the mobile terminal 1 (S65).
- the mobile terminal 1 receives a request for establishing a default bearer of an APN that is different from the APN requested by the communication path establishment request message, but continues the process with priority given to an instruction from the hMME 3 and transmits the default bearer establishment to the hMME 3 By doing so, the default bearer establishment is completed and a default bearer establishment response is transmitted (S66).
- the hMME 3 transmits a process completion notification (S6a: Notify Request / Answer) to the hHSS 4 (S67).
- the hHSS 4 determines by the temporary APN management function that the mobile terminal 1 has been used overseas after the temporary APN change, the hHSS 4 transmits an APN change request (S6a: IDR) including the domestic APN to the hMME 3 ( S68).
- S6a IDR
- the hHSS 4 determines that the mobile terminal 1 has never been used overseas after the temporary APN change, the hHSS 4 does not transmit an APN change request to the hMME 3.
- the hHSS 4 can determine whether or not the user has been abroad after the temporary APN change by referring to the overseas network information in the area.
- the hMME 3 When the hMME 3 receives the APN change request, the hMME 3 sends an APN change instruction request to the mobile terminal 1 by the temporary APN control function (S69).
- the APN change instruction request signal a NAS (Non-Access Stratum) signal issued by the hMME 3 is suitable.
- a NAS-ECM information request can be used.
- the mobile terminal 1 When receiving the APN change instruction request, the mobile terminal 1 changes the APN by the APN change function and returns an APN change completion response to the hMME 3 (S70).
- the hMME 3 receives the APN change completion response, the hMME 3 transmits an APN change completion notification to the hHSS 4 (S71).
- the hMME 3 when the hMME 3 receives a communication path establishment request including the temporary APN from the portable terminal 1, the hMME 3 uses the home method to connect the contract information to the external network (that is, “internet”). When the user returns home, the mobile terminal 1 can be automatically accessed via the hDATA_PGW5.
- FIG. 10 is a communication sequence diagram showing a modified example of the procedure shown in FIG. Step S81 in FIG. 10 is the same as step S11 in FIG.
- the vMME 103 that has received the APN change request sends an APN change request to the hHSS 4 instead of sending it to the hSMSC / AAA / OTA 8 (S82).
- an APN change response is transmitted from the hHSS 4 to the vMME 103 (S83), and an APN change request response is transmitted from the vMME 103 to the mobile terminal 1 (S84).
- the vMME 103 may operate as a subject that executes the temporary APN control.
- the home route method and the local breakout method can be easily switched without replacing the SIM or changing the telephone number. It becomes possible. Since the user of the portable terminal 1 can select a communication path by his / her own judgment during roaming, the communication operator can provide a service that meets the user's needs.
- the APN used by the mobile terminal 1 is switched for roaming between operators. That is, the DATA PGW to which the mobile terminal 1 is connected is switched between different operators. In the present embodiment, the DATA PGW is switched within the same operator.
- FIG. 11 shows the configuration of the home operator of the mobile terminal 1.
- each device is described except for “h” in FIG.
- the same reference numerals are used for the same components as in FIG.
- devices unnecessary for the description of this embodiment are omitted from the home operator's devices in FIG. 1, and the lines indicating the connections are omitted for obvious connection relationships.
- the HSS 4 and the MME 3 can communicate with the eNB 2, the SGW 10, and the DATA PGWs 5 and 9.
- the SGW 10 is a serving gateway and relays signals between the eNB 2 and the DATA PGW 5 or 9, and is omitted in FIG. 1 for simplification of the drawing.
- the DATA PGW 5 corresponds to the hDATA PGW 5 in FIG. 1 and is, for example, a gateway for connecting to the Internet.
- the DATA PGW 9 is a gateway to the area network.
- the area network may be a network connected to the Internet or a closed network not connected to the Internet.
- Area network is associated with a geographical area.
- the geographical area is a tracking area. That is, the area network is associated with the tracking area.
- the HSS 4 holds information as to whether or not the mobile terminal 1 has an access right to the area network.
- the mobile terminal 1 obtains an access right to the area network based on a contract with the home operator.
- the MME 3 connects the mobile terminal 11 to the DATA PGW 9 in addition to the APN (here “internet”) for connecting the UE 1 to the DATA PGW 5.
- APN here, “temp”
- the MME 3 also holds information about the area network and the tracking area associated with the area network.
- FIG. 12 is a sequence diagram of APN switching according to the present embodiment.
- the portable terminal 1 transmits a network registration request message for registering the located area to the MME 3.
- the network registration request message in S91 can be, for example, an attach request (NAS-EMM: Attach Request) sent by the mobile terminal 1 triggered by power-on or an S1AP message.
- the network registration request message includes UE identification information (such as IMSI and S1AP-ID) and area information (such as ECGI and TAI).
- the MME specifies the mobile terminal 1 based on the UE identification information, and stores the area information of the mobile terminal 1. Thereafter, the MME 3 transmits a subscriber information request message to the HSS 4 in S93.
- the subscriber information request message has a subscriber identifier (IMSI, MSISDN, etc.), area information and MME information (Origin-Host, Origin-realm, PLMN-ID, etc.).
- the HSS 4 When the HSS 4 receives the subscriber information request message, the HSS 4 specifies the mobile terminal 1 based on the subscriber identifier, and returns a subscriber information response (S6a: ULA) in S94.
- This subscriber information response includes information indicating whether or not the mobile terminal 1 has an access right to the area network.
- the MME 3 Upon receiving the subscriber information response, the MME 3 performs APN control in S95. First, the MME 3 determines whether the mobile terminal 1 has an access right to the area network based on the subscriber information response. Here, it is assumed that the mobile terminal 1 has an access right to the area network. In this case, the MME 3 determines whether the mobile terminal is currently in the tracking area associated with the area network.
- the MME 3 transmits a network registration response (NAS-EMM: Attach: Accept) to the mobile terminal 1 in S96.
- NAM network registration response
- the AME for connecting to the DATA PGW 5 is changed from “Internet” to the DATA PGW 9.
- the portable terminal 1 is instructed to switch to “temp” which is an APN for connection.
- the portable terminal 1 switches the APN and changes the APN in S97.
- the mobile terminal 1 transmits network registration completion (NAS-EMM: Attach Complete) to the MME 3 in S98.
- the mobile terminal 1 connects to the area network via the DATA PGW 9 using APN “temp”.
- the mobile terminal 1 can perform data transfer with a short delay with the area network.
- the MME 3 switches the APN used by the mobile terminal 1 from “temp” to “internet” as in S96.
- the processing corresponding to S91 and S96 of FIG. 11 can be performed by the NAS signal procedure instead of the network registration request (S91) and the network registration response (S96).
- a tracking area update can be used in S91
- a tracking area update response can be used in S96.
- NAS-ESM information request / response can also be used.
- the area network is associated with the tracking area.
- other methods may be used for setting and specifying the geographical area (area) associated with the area network, such as an area specified by one or more cells. It can also be used.
- the HSS 4 holds information indicating an area network having an access right for each mobile terminal 1.
- the HSS 4 includes information indicating the area network to which the mobile terminal 1 has an access right in the subscriber information response.
- the MME 3 switches to the APN used to connect to the DATA PGW 9 associated with the area network in S96.
- the portable terminal 1 is instructed.
- the MME 3 can also hold a corresponding application for each APN of the mobile terminal 1.
- the application used in the APN after switching can be designated.
- the portable terminal 1 uses the APN designated as the switching destination in S96 in the designated application, and among the applications associated with the switching source APN in S96, the application not designated in S96. Can communicate using the switching source APN.
- the MME 3 or DATA PGW 5 is a device managed by a home operator
- the DATA PGW 9 is a device managed by another domestic communication operator or a virtual communication operator (so-called MVNO (Mobile Virtual Network Operator)).
- MVNO Mobile Virtual Network Operator
- the user can conclude a temporary contract with another communication operator only for a specific communication service without changing a subscriber contract with a certain communication operator. The flexibility of communication services is improved.
- FIG.11 and FIG.12 described the apparatus using the terminology used with 4G system, this invention is not limited to 4G system, Of course, 5G system is applicable.
- the eNB 2 in FIG. 11 is a 5G RAN
- the HSS 4 in FIG. 11 is UDM (Unified Data Management)
- the MME 3 in FIG. 11 is an MM (Mobility Management in a CPF (C-Plane Function)).
- 11 and SGW 10 and DATA PGWs 5 and 9 in FIG. 11 are SM (Session Management) and UPF (U-Plane Function) included in the CPF.
- the parameter corresponding to 4G APN is DNN (DataNNetwork Name) in 5G.
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Abstract
Description
[通信システムの概要]
図1は、本実施形態の通信システムの構成例を示す図である。図1においては、携帯端末(UE)1のホームオペレータのネットワーク(以下、ホームネットワーク)の設備と、ローカルオペレータのネットワーク(以下、ローミングネットワーク)の設備とが示されている。ホームオペレータは、heNB2と、hMME3と、hHSS4と、hDATA_PGW5と、hIMS_PGW6と、hPCRF7と、hSMSC/AAA/OTA8とを管理している。
図2は、本実施形態の通信制御方法の概要を説明するための図である。本実施形態の携帯端末1は、ホーム方式を用いるかローカル方式を用いるかを選択可能であり、どちらの方式を用いるかによって、APNを変更することを特徴としている。携帯端末1のユーザが、ローカル方式を用いる際にAPNを変更するための操作をすると、ホームオペレータの設備及びローカルオペレータの設備が連携して、携帯端末1が使用するAPNを変更するための処理が実行される。
図3は、携帯端末1の構成を示す図である。携帯端末1は、通信部11と、操作部12と、表示部13と、記憶部14と、CPU15とを有する。CPU15は、操作受付部151と、表示制御部152と、送信部153と、受信部154と、制御部155とを有する。
図4は、vMME103の構成を示す図である。vMME103は、通信部31と、記憶部32と、CPU33とを有する。通信部31は、heNB2、hHSS4及びhDATA_PGW5等の他の装置と通信するためのインタフェースである。
図5は、携帯端末1のユーザの操作に基づいてAPNを変更する際の手順を示す通信シーケンス図である。図5に示す通信シーケンスは、APNがホーム方式に設定されている状態から開始する。また、以下の各図において、APN=xxxは、携帯端末1が保持するAPNを示している。例えば、図5の開始時において、携帯端末1は、IMSに接続するための"ims"とインターネットに接続するための"internet"の2つのAPNを保持している。なお、APN"internet"は、hDATA PGW5を介してインターネットに接続するためのAPNである。
図6は、一時APNを用いて通信経路を確立する手順を示す通信シーケンス図である。この手順は、図5に示した手順を実行した後に、ローミング先のエリアで行われる。この手順により、携帯端末1は、APNの情報を用いて接続するPGWを選択して通信経路を確立する。
図7は、オンライン契約によるデータ通信開通手順を示す通信シーケンス図である。オンライン契約によるデータ通信開通手順により、携帯端末1は、インターネットへのアクセスを行うことができる。この手順により、vAAA/SPR108の一時的な加入者情報を更新し、インターネットとの通信が開通する。
図8は、契約期間が満了した時のフィルタ情報生成手順を示す通信シーケンス図である。例えば、携帯端末1が利用可能な通信量を使い切った場合に、ローカルオペレータは、契約満了時のフィルタ情報生成手順により、携帯端末1からのインターネット向けのデータ通信にフィルタをかけることで、携帯端末1がインターネットに接続できないようにする。
図9は、外部ネットワークにアクセスする方式をホーム方式に戻す手順を示す通信シーケンス図である。本手順により、ローカル方式に変更した際に用いられる一時APNを、元のAPNに戻すことで、海外から国内に戻った際に、国内のPGWであるhDATA_PGW5を介してインターネットにアクセスするための通信路を自動的に確立することが可能となる。
図10は、図5に示した手順の変形例を示す通信シーケンス図である。図10におけるステップS81は、図5におけるステップS11と同一である。その後、図10の通信シーケンスにおいては、APN変更依頼を受信したvMME103が、APN変更要求をhSMSC/AAA/OTA8に送信する代わりにhHSS4に送信している(S82)。そして、hHSS4からvMME103に対して、APN変更応答が送信され(S83)、vMME103から携帯端末1に対してAPN変更依頼応答が送信される(S84)。このように、vMME103が、一時APN制御を実行する主体として動作してもよい。
上記の説明においては、vMME103が移動管理装置として機能して、一時APNを携帯端末1に送信するという構成例について説明したが、vMME103以外の装置が移動管理装置として機能し、一時APNを携帯端末1に送信してもよい。また、移動管理装置が、一つの装置で構成される必要はなく、複数の装置が連動して移動管理装置として機能してもよい。例えば、hSMSC/AAA/OTA8が、vMME103を経由することなく、携帯端末1に直接一時APNを送信してもよい。
以上説明したように、本実施形態によれば、携帯端末1がローミングする際に、SIMを差し替えたり、電話番号を変更したりすることなく、ホームルート方式とローカルブレイクアウト方式とを容易に切り替えることが可能になる。携帯端末1のユーザは、ローミング中に、自身の判断で通信路を選択することができるので、通信オペレータは、ユーザのニーズに合ったサービスを提供できるようになる。
第一実施形態は、オペレータ間におけるローミングのため、携帯端末1に使用させるAPNを切り替えるものであった。つまり、携帯端末1が接続するDATA PGWを、異なるオペレータ間で切り替えるものであった。本実施形態は、同じオペレータ内においてDATA PGWの切り替えを行う。
Claims (21)
- 携帯端末と、前記携帯端末の移動管理を実行する移動管理装置と、前記携帯端末を第1ネットワークに接続する第1ゲートウェイと、前記携帯端末を第2ネットワークに接続する第2ゲートウェイと、を有する通信システムであって、
前記移動管理装置は、前記第1ゲートウェイを介して前記携帯端末を前記第1ネットワークに接続させるか、前記第2ゲートウェイを介して前記携帯端末を前記第2ネットワークに接続させるかを判定した結果に基づいて、前記携帯端末に、前記第1ゲートウェイを介して前記第1ネットワークに接続するための第1契約情報を使用させるか、前記第2ゲートウェイを介して前記第2ネットワークに接続するための第2契約情報を使用させるかを切り替える、
通信システム。 - 前記第2ネットワークは、地理的エリアに関連付けられており、
前記移動管理装置は、前記携帯端末が前記地理的エリアの中にいることを、前記第2ゲートウェイを介して前記携帯端末を前記第2ネットワークに接続させると判定するための条件の1つとする、請求項1に記載の通信システム。 - 前記移動管理装置は、前記携帯端末が前記第2ネットワークへのアクセス権を有することを、前記第2ゲートウェイを介して前記携帯端末を前記第2ネットワークに接続させると判定するための条件の1つとする、請求項1又は2に記載の通信システム。
- 前記移動管理装置は、前記第2ゲートウェイを介して前記第2ネットワークに接続して前記携帯端末が行う通信で使用されるアプリケーションを指定する、請求項1から3のいずれか1項に記載の通信システム。
- 前記第1ゲートウェイ及び前記第2ゲートウェイは前記携帯端末のホームネットワークの装置である、請求項1から4のいずれか1項に記載の通信システム。
- 前記第1ゲートウェイは前記携帯端末のホームネットワークの装置であり、
前記第2ゲートウェイは前記携帯端末のホームネットワークとは異なるローミングネットワークの装置である、請求項1から4のいずれか1項に記載の通信システム。 - 前記第1ネットワーク及び前記第2ネットワークは同じ外部ネットワークである、請求項6に記載の通信システム。
- 前記携帯端末は、
前記携帯端末を、前記第1ゲートウェイを介して前記外部ネットワークに接続するホーム方式を用いるか、前記第2ゲートウェイを介して前記外部ネットワークに接続するローカル方式を用いるかの選択操作により選択された方式を示す選択情報を前記移動管理装置に送信し、
前記移動管理装置は、前記携帯端末から受信した前記選択情報が、前記ローカル方式を用いることを示していると、前記第2契約情報を前記携帯端末に送信する、
請求項7に記載の通信システム。 - 前記携帯端末のユーザと前記ホームネットワークのオペレータとの間の契約情報を管理する契約情報管理装置をさらに有し、
前記移動管理装置は、前記選択情報が、前記ローカル方式を用いることを示している場合に、前記契約情報管理装置から前記第2契約情報を取得して前記携帯端末に送信する、
請求項8に記載の通信システム。 - 前記移動管理装置は、前記携帯端末から契約情報を含む通信路確立要求を受信した場合に、前記通信路確立要求に含まれている前記契約情報と前記契約情報管理装置から取得する前記第2契約情報とを比較した結果に基づいて、前記第1ゲートウェイを介して前記携帯端末を前記外部ネットワークに接続させるか、前記第2ゲートウェイを介して前記携帯端末を前記外部ネットワークに接続させるかを判定する、
請求項9に記載の通信システム。 - 前記移動管理装置は、前記通信路確立要求に含まれている前記契約情報が、前記契約情報管理装置から取得する前記第2契約情報と一致しないと、前記第1ゲートウェイを介して前記携帯端末を前記第1ネットワークに接続させると判定する、
請求項10に記載の通信システム。 - 前記移動管理装置は、前記通信路確立要求に含まれている前記契約情報が、前記契約情報管理装置から取得する前記第2契約情報と一致しないと、前記携帯端末に対して、前記第1契約情報に切り替えるように指示する、
請求項10に記載の通信システム。 - 前記移動管理装置は、前記ホームネットワークのホーム移動管理装置と、前記ローミングネットワークのローカル移動管理装置とを含み、
前記ホーム移動管理装置は、前記第2契約情報を含む前記通信路確立要求を前記携帯端末から受信した場合、前記第1契約情報に切り替えるように前記携帯端末に指示する、
請求項12に記載の通信システム。 - 前記ホーム移動管理装置は、前記第2契約情報を含む前記通信路確立要求を前記携帯端末から受信した場合、前記携帯端末が前記第2契約情報を取得した後に前記ローミングネットワークで前記第2契約情報が使用されていたかを判定し、前記ローミングネットワークで前記第2契約情報が使用されていたと判定すると、前記第1契約情報に切り替えるように前記携帯端末に指示する、
請求項13に記載の通信システム。 - 前記ホーム移動管理装置は、前記携帯端末が前記第2契約情報を取得した後に前記ローミングネットワークで前記第2契約情報が使用されていなかったと判定すると、前記第1契約情報への切り替えを前記携帯端末に指示しない、
請求項14に記載の通信システム。 - 前記携帯端末は、前記第2契約情報を受信すると、前記第2契約情報を含む通信路確立要求を前記移動管理装置に送信し、前記通信路確立要求を送信したことに応じて、前記第2ゲートウェイに接続する契約を行うための契約画面を表示する、
請求項8から15のいずれか1項に記載の通信システム。 - 前記第2ゲートウェイは、前記契約画面を前記携帯端末に表示させた後に契約操作を受け付けた後に、前記第2契約情報を含む、前記第2ネットワークに接続するための通信路確立要求を前記携帯端末から受信すると、前記第2ゲートウェイを介して前記携帯端末を前記第2ネットワークに接続させる、
請求項16に記載の通信システム。 - 前記携帯端末のユーザに対応するポリシーの発行を制御するポリシー制御装置と、前記ポリシーを管理するポリシー管理装置と、をさらに有し、
前記ポリシー制御装置は、前記移動管理装置から、前記第2ゲートウェイを介して前記第2ネットワークに接続するための通信路の確立要求を受けた場合に、前記第2ゲートウェイを介して前記第2ネットワークに接続するためのポリシーを発行し、
前記ポリシー管理装置は、前記ポリシー制御装置が発行した前記ポリシーを記憶媒体に記憶させる、
請求項8から17のいずれか1項に記載の通信システム。 - 携帯端末であって、
第1ネットワークに接続する第1ゲートウェイを介して前記第1ネットワークに接続する第1方式を用いるか、第2ネットワークに接続する第2ゲートウェイを介して前記第2ネットワークに接続する第2方式を用いるかの選択操作を受け付ける受付手段と、
前記選択操作により選択された方式を示す選択情報を前記携帯端末の移動管理を実行する移動管理装置に送信する送信手段と、
前記第2ネットワークに接続するための一時契約情報を受信する受信手段と、
前記受信手段が受信した前記一時契約情報を記憶手段に記憶させる記憶制御手段と、
を有する携帯端末。 - 携帯端末の移動管理を実行する移動管理装置であって、
第1ネットワークに接続する第1ゲートウェイを介して前記携帯端末を前記第1ネットワークに接続させるか、第2ネットワークに接続する第2ゲートウェイを介して前記携帯端末を前記第2ネットワークに接続させるかを判定する判定手段と、
前記判定手段の判定結果に基づいて、前記携帯端末に、前記第1ゲートウェイを介して前記第1ネットワークに接続するための第1契約情報を使用させるか、前記第2ゲートウェイを介して前記第2ネットワークに接続するための第2契約情報を使用させるかを切り替える切替手段と、
を備えている、移動管理装置。 - 携帯端末の移動管理を実行する移動管理装置が、第1ネットワークに接続する第1ゲートウェイを介して前記携帯端末を前記第1ネットワークに接続させるか、第2ネットワークに接続する第2ゲートウェイを介して前記携帯端末を前記第2ネットワークに接続させるかを判定するステップと、
判定した結果に基づいて、前記第1ゲートウェイを介して前記第1ネットワークに接続するための第1契約情報を前記携帯端末に使用させるか、前記第2ゲートウェイを介して前記第2ネットワークに接続するための第2契約情報を前記携帯端末に使用させるかを切り替えるステップと、
を含む、通信制御方法。
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