WO2016185964A1 - 移動通信システム、通信制御装置、移動管理エンティティ及び移動通信方法 - Google Patents
移動通信システム、通信制御装置、移動管理エンティティ及び移動通信方法 Download PDFInfo
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- mobile station
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- 238000010295 mobile communication Methods 0.000 title claims abstract description 37
- 238000004891 communication Methods 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 14
- 230000005540 biological transmission Effects 0.000 claims abstract description 108
- 230000004044 response Effects 0.000 claims description 30
- 238000012545 processing Methods 0.000 claims description 16
- 238000010586 diagram Methods 0.000 description 19
- 102000018059 CS domains Human genes 0.000 description 5
- 108050007176 CS domains Proteins 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
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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
- H04W4/90—Services for handling of emergency or hazardous situations, e.g. earthquake and tsunami warning systems [ETWS]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/10—Architectures or entities
- H04L65/1016—IP multimedia subsystem [IMS]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/1066—Session management
- H04L65/1069—Session establishment or de-establishment
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/2866—Architectures; Arrangements
- H04L67/30—Profiles
- H04L67/306—User profiles
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
- H04W36/0022—Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/50—Connection management for emergency 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
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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
Definitions
- the present invention relates to a mobile communication system, a communication control apparatus, a mobility management entity, and a mobile communication method, and relates to emergency call control in a mobile network of a mobile station.
- LTE Long Term Evolution
- 3GPP 3rd Generation Partnership Project
- IMS IP Multimedia Subsystem
- VoIP Voice over LTE
- a mobile station such as a smartphone that supports VoLTE sends an emergency call (emergency or police)
- the mobile station is notified by the mobility management entity (MME) “EmergencymerService Support indicator”
- MME mobility management entity
- CSFB Carrier Sense Multiple Access
- 3G UTRAN
- CS circuit switching
- Emergency Service Support Indicator indicates emergency call support via IMS (EM supported)
- the mobile station sends an emergency call by VoLTE.
- the mobile station is not only a home network (Home ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ Public ⁇ Land Mobile Network (HPLMN)) operated by an operator who has a service contract with the mobile station, but also a visited network (Visited Public Land Mobile Network (VPLMN)) can also be connected.
- HPLMN Home ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ Public ⁇ Land Mobile Network
- VPLMN Visitd Public Land Mobile Network
- the mobile station determines whether or not the emergency call can be made based on the Emergency Service Support indicator notified from the VLMMN MME, not the HPLMN MME. In such a case, the MPL of the VPLMN notifies the operator of the HPLMN and whether the emergency call transmission via the IMS is supported in the VPLMN based on the agreement with the operator of the VPLMN.
- An object is to provide a mobility management entity and a mobile communication method.
- a mobile communication system includes a communication control device provided in a home network of a mobile station, a mobility management entity provided in a visited network of the mobile station, and a multimedia sub processing packet for an emergency call. Including the system.
- the communication control device includes an emergency call provision domain determination unit that determines whether or not emergency call transmission via the multimedia subsystem is supported in the visited network, and an emergency call transmission determination result by the emergency call provision domain determination unit. And an indicator transmission unit for transmitting a signal including a first support indicator indicating whether or not emergency call transmission is supported to the mobility management entity.
- the mobility management entity includes an indicator receiver that receives the first support indicator from the communication control device, and a response transmitter that transmits a response to the connection request from the mobile station to the visited network to the mobile station.
- the response transmitting unit transmits a response including a second support indicator indicating whether or not emergency call transmission is supported based on the first support indicator received by the indicator receiving unit to the mobile station.
- a communication control apparatus is used in a mobile communication system including a mobility management entity provided in a visited network of a mobile station and a multimedia subsystem that processes an emergency call packet. Of home network.
- the communication control apparatus includes: an emergency call provision domain determination unit that determines whether or not emergency call transmission via a multimedia subsystem is supported in a visited network; and an emergency call transmission determination result by the emergency call provision domain determination unit And an indicator transmitter that transmits a signal including a first support indicator indicating whether or not emergency call transmission is supported to the mobility management entity or the mobile station.
- a mobility management entity is used in a mobile communication system including a communication control device provided in a home network of a mobile station and a multimedia subsystem that processes an emergency call packet. Provided in the visited network.
- the mobility management entity includes: an indicator receiving unit that receives a first support indicator indicating whether or not emergency call transmission via a multimedia subsystem is supported in a registered network from a communication control device; and a mobile station A response transmission unit that transmits a response to the connection request to the visited network from the mobile station to the mobile station.
- the response transmitting unit transmits a response including a second support indicator indicating whether or not emergency call transmission is supported to the mobile station based on the first support indicator received by the indicator receiving unit.
- a mobile communication method includes a communication control device provided in a home network of a mobile station, a mobility management entity provided in a visited network of the mobile station, and a multimedia subsystem that processes an emergency call packet. Used in a mobile communication system including.
- the mobile communication method includes a step in which a communication control device transmits a signal including a first support indicator indicating whether or not emergency call transmission via a multimedia subsystem is supported in a visited network to a mobility management entity;
- the mobility management entity includes receiving a first support indicator from the communication control device, and the mobility management entity transmitting a response to the connection request from the mobile station to the visited network to the mobile station.
- the mobility management entity sends a response including a second support indicator to the mobile station indicating whether or not emergency call origination is supported based on the received first support indicator. Send.
- FIG. 1 is an overall schematic configuration diagram of a mobile communication system 10.
- FIG. 2 is a functional block configuration diagram of the HSS 100 according to the first embodiment.
- FIG. 3 is a functional block configuration diagram of the MME 300 according to the first embodiment.
- FIG. 4 is a diagram illustrating an operation sequence for notifying the UE 20 according to the first embodiment of an indicator indicating whether or not emergency call transmission via the IMS 500 is supported.
- FIG. 5 is an explanatory diagram of an operation of notifying the UE 20 according to the first embodiment of an indicator indicating whether or not emergency call transmission via the IMS 500 is supported.
- FIG. 6 is a diagram showing an operation flow of the HSS 100 according to the first embodiment.
- FIG. 7 is a diagram illustrating an operation flow of the MME 300 according to the first embodiment.
- FIG. 8 is an explanatory diagram of an operation of notifying the UE 20 according to the second embodiment of an indicator indicating whether or not emergency call transmission via the IMS 500 is supported.
- FIG. 9 is a functional block configuration diagram of the PGW 200 according to the second embodiment.
- FIG. 10 is an explanatory diagram of an operation of notifying the UE 20 according to the third embodiment of an indicator indicating whether or not emergency call transmission via the IMS 500 is supported.
- FIG. 11 is a functional block configuration diagram of the SIP server 510 according to the third embodiment.
- control (Attach) in an EMM (EPS Mobility Management) layer will be described as an example.
- FIG. 1 is an overall schematic configuration diagram of a mobile communication system 10 according to the present embodiment.
- the mobile communication system 10 includes a mobile station 20 (hereinafter, User Equipment 20 (UE20)), specifically, a Home Subscriber Server 100 (hereinafter, “Home Public Land Mobile Network” (HPLMN)). HSS100) and PDN Gateway 200 (hereinafter PGW200).
- UE20 User Equipment 20
- HPLMN Home Public Land Mobile Network
- HPLMN Home Public Land Mobile Network
- PGW200 PDN Gateway 200
- the mobile communication system 10 includes a mobility management entity 300 (hereinafter referred to as MME300) and a Serving gateway 400 (hereinafter referred to as SGW400) provided in the visited network of UE20, specifically, VisitedsitePublic Land Mobile Network (VPLMN). .
- MME300 mobility management entity 300
- SGW400 Serving gateway 400
- VPLMN VisitedsitePublic Land Mobile Network
- the PGW 200 is connected to the IP multi-device subsystem 500 (hereinafter referred to as IMS 500) via the SGi interface.
- IMS 500 may be connected to a device provided in VPLMN through another interface.
- UE20 can wirelessly connect to E-UTRAN, a Long Term Evolution (LTE) radio access network, and UTRAN, a 3G radio access network.
- UE20 can communicate with MME300 and SGW400 via E-UTRAN. Further, the UE 20 can perform communication with the Mobile Switching Center 30 (hereinafter, MSC 30) via the UTRAN.
- MSC 30 Mobile Switching Center
- MSC30 is an exchange for circuit switching service and is connected to circuit switching domain 40 (hereinafter, CS domain 40).
- the HSS 100 is a database of subscriber information for the mobile communication system 10, specifically, an HPLMN operator (communication carrier), and manages subscriber (mobile station) authentication information and location information.
- HPLMN operator communication carrier
- subscriber mobile station
- the PGW200 provides a function to realize connection between UE20 and IMS500 network.
- the MME 300 is provided in the VPLMN of the UE 20 and controls movement of the UE 20 in the VPLMN.
- the SGW 400 is a packet switch in the LTE network, and exchanges user data with the PGW 200.
- IMS500 is an IP-based multimedia subsystem that can process packets for voice communications (including emergency calls).
- FIG. 2 is a functional block configuration diagram of the HSS 100.
- the HSS 100 includes a Dia_ULR receiving unit 110, an emergency call providing domain determining unit 120, a visited network DB 131, a mobile station type DB 133, a subscriber type DB 135, and a Dia_ULA transmitting unit 140.
- Each functional block is realized by hardware elements such as a processor (including a memory), a functional module (such as a network IF), and a power supply.
- the HSS 100 constitutes a communication control device provided in the home network of the mobile station.
- the Dia_ULR receiving unit 110 receives Dia_ULR from the MME 300 according to the Diameter protocol.
- the emergency call providing domain determining unit 120 determines whether or not an emergency call can be transmitted via the IMS 500 in the VPLMN of the UE 20 according to Dia_ULR received by the Dia_ULR receiving unit 110. Specifically, the emergency call providing domain determining unit 120 determines an emergency call providing domain (IMS500 or CS domain 40) in the VPLMN. That is, the emergency call providing domain determining unit 120 determines whether or not the UE 20 can execute emergency call transmission by VoiceVover LTE (hereinafter referred to as VoLTE) in the VPLMN.
- VoLTE VoiceVover LTE
- the emergency call provision domain determining unit 120 refers to the visited network DB 131, the mobile station type DB 133, and the subscriber type DB 135 to determine whether or not the emergency call transmission is supported.
- the emergency call providing domain determination unit 120 refers to the visited network DB 131 and supports the emergency call transmission based on the presence or absence of an emergency call transmission via the IMS 500 between the HPLMN and the VPLMN. It can be determined whether or not.
- the emergency call providing domain determining unit 120 can also refer to the mobile station type DB 133 to determine whether or not the emergency call transmission is supported based on the type of the mobile station.
- the type of mobile station includes the type of mobile station that supports the emergency call transmission function by VoLTE, the connection compatibility between the mobile station of this type and VPLMN, and the like.
- the emergency call providing domain determining unit 120 can also refer to the subscriber type DB 135 to determine whether or not the emergency call transmission is supported based on the user type of the mobile station.
- the user type (subscriber type) of the mobile station is a contract type with an operator of HPLMN, and includes availability of VoLTE, contract data communication volume, and the like.
- the Dia_ULA transmission unit 140 transmits Dia_ULA according to the Diameter protocol to the MME 300. Specifically, Dia_ULA transmission unit 140 receives a signal including a first support indicator indicating whether or not emergency call transmission is supported based on the determination result of emergency call transmission by emergency call providing domain determination unit 120. Sent to the mobility management entity. In the present embodiment, the Dia_ULA transmission unit 140 constitutes an indicator transmission unit.
- Dia_ULA transmission unit 140 transmits Dia_ULA including EM supported which is an indicator indicating that the emergency call transmission is supported.
- Dia_ULA transmission unit 140 transmits Dia_ULA including EM not supported which is an indicator indicating that the emergency call transmission is not supported.
- FIG. 3 is a functional block configuration diagram of the MME 300.
- the MME 300 includes an Attach Request receiving unit 310, a Dia_ULR transmitting unit 320, a Dia_ULA receiving unit 330, an indicator processing unit 340, an agreement information DB 350, and an Attach Accept transmitting unit 360.
- Each functional block is realized by hardware elements such as a processor (including a memory), a functional module (such as a network IF), and a power supply.
- the Attach Request receiving unit 310 receives an Attach Request that is a connection request for the VPLMN from the UE 20.
- the Dia_ULR transmission unit 320 transmits Dia_ULR according to the Diameter protocol to the HSS 100 in accordance with the Attach Request received by the Attach Request reception unit 310.
- the Dia_ULA receiving unit 330 receives Dia_ULA transmitted by the HSS 100.
- the Dia_ULA receiving unit 330 constitutes an indicator receiving unit that receives the first support indicator from the communication control device.
- the indicator processing unit 340 executes processing based on the indicator (EM-supported or EM-not-supported) included in Dia_ULA received by the Dia_ULA reception unit 330. Specifically, the indicator processing unit 340 determines the type of indicator (EM supported or EM not supported) to be included in the Attach Accept based on the type of indicator included in Dia_ULA.
- the indicator processing unit 340 refers to the agreement information DB 350 and determines the type of indicator (EM supported or EM not supported) to be included in the Attach Accept. To do. Specifically, the indicator processing unit 340 sets EM supported to Attach Accept if the arrangement information DB 350 indicates that emergency call transmission via the IMS500 is supported in the VPLMN of the UE 20 that sent the Attach Request. Decide to include.
- the indicator (EM (supported and EM not supported) is defined in 3GPP TS23.401 (Subclause 4.3.12) as described above.
- agreement information DB 350 is configured according to the content decided by the agreement between the HPLMN operator and the VPLMN operator, and is not limited to whether or not an emergency call can be made via the IMS 500, and whether or not voice communication (VoLTE) via the IMS 500 is possible. Is also included.
- the Attach® Accept transmission unit 360 transmits Attach® Accept, which is a response to the Attach® Request received from the UE 20, to the UE 20.
- Accept performs connection with E-UTRAN in VPLMN.
- the Attach Accept Transmitter 360 constitutes a response transmitter that transmits a response to a connection request from the mobile station to the visited network to the mobile station.
- Accept transmission part 360 contains the indicator (2nd support indicator) which shows whether emergency call transmission is supported based on the indicator (1st support indicator) which Dia_ULA receiving part 330 received To UE20.
- the Attach Accept transmitting unit 360 transmits Attach Accept that includes EM supported or EM not supported instructed from the indicator processing unit 340 to the UE 20.
- FIG. 4 shows an operation sequence for notifying the UE 20 of an indicator indicating whether or not emergency call transmission via the IMS 500 is supported.
- FIG. 5 is an explanatory diagram of an operation of notifying the UE 20 of an indicator indicating whether or not emergency call transmission via the IMS 500 is supported.
- UE 20 transmits an Attach Request to MME 300 in order to connect to E-UTRAN in VPLMN (S10 in FIG. 4, the same applies hereinafter).
- the MME 300 receives the Attach Request, the MME 300 transmits Dia_ULR to the HSS 100 (S20).
- the HSS 100 determines the emergency call providing domain in the VPLMN based on the received Dia_ULR (S30).
- HSS100 returns Dia_ULA including EM supported or EM not supported to MME300 based on the determination result of emergency call providing domain (S40).
- MME300 determines the type of indicator (EM supported or EM not supported) to be included in Attach Accept based on the type of indicator included in Dia_ULA (S50).
- MME300 returns an Attach Accept including the determined indicator to UE20 (S60).
- FIG. 5 conceptually shows the operations of S10 to S60 described above.
- FIG. 5 shows an example in which the emergency call transmission is determined to be impossible by the HSS 100 and EM not supported is instructed.
- UE20 that received Attach Accept including EM not supported recognizes that an emergency call cannot be made via VPLMN's E-UTRAN (LTE) and executes fallback (CSFB) to UTRAN (3G CS) . As a result, the UE 20 connects to the circuit switching domain and makes an emergency call to the MSC 30.
- LTE E-UTRAN
- CSFB fallback
- FIG. 6 shows an operation flow of the HSS100 provided in the HPLMN.
- the HSS 100 determines whether the emergency call providing domain in the VPLMN is the IMS 500 or the CS domain 40 (S110). Specifically, the HSS 100 determines an emergency call providing domain in the VPLMN based on whether or not there is an emergency call transmission arrangement via the IMS 500 between the HPLMN and the VPLMN.
- the HSS 100 determines whether or not the type of the UE 20 is a type of mobile station that is guaranteed to operate in the VPLMN (S120). Specifically, as described above, the HSS 100 confirms the mobile station type (model) that supports the function of calling an emergency call by VoLTE, the connection compatibility between the mobile station of this type and VPLMN, and the like. .
- the HSS 100 determines whether the user type (subscriber type) of the mobile station is a type that allows emergency call transmission via the IMS 500. (S130).
- the HSS 100 sets EM100supported as an indicator included in Dia_ULA returned to the MME 300 (S140).
- the emergency call providing domain is the CS domain 40
- the type of the mobile station is not guaranteed to operate, or the subscriber type is not permitted to make an emergency call
- the HSS 100 returns the Dia_ULA to the MME 300.
- EM not supported is set as an indicator included in (S150).
- HSS100 returns Dia_ULA including EM-supported or EM-not-supported to MME300 (S160).
- FIG. 7 shows an operation flow of the MME300 provided in the VPLMN. As shown in FIG. 7, when MME300 receives Dia_ULA from HSS100, whether or not Dia_ULA includes an indicator (EM supported or EM not supported) indicating whether or not emergency call transmission via IMS500 is supported Is determined (S210).
- MME300 receives Dia_ULA from HSS100, whether or not Dia_ULA includes an indicator (EM supported or EM not supported) indicating whether or not emergency call transmission via IMS500 is supported Is determined (S210).
- the MME 300 sets EM supported or EM supported as an indicator included in the Attach Accept returned to the UE 20 based on the received indicator type (S220). Specifically, the MME 300 sets EM supported when Dia_ULA includes EM supported, and sets EM not supported when Dia_ULA includes EM not supported.
- the MME 300 sets EM supported or EM supported as an indicator included in the Attach Accept returned to the UE 20 based on the information held locally (arrangement information DB 350) (S230).
- the MME 300 when the arrangement information DB 350 indicates that the emergency call transmission via the IMS 500 in the VPLMN of the UE 20 is supported, the MME 300 includes EM supported in the Attach Accept. decide.
- MME300 returns the set EM supported or Attach Accept including EM supported to UE20 (S240).
- the HSS 100 determines whether or not emergency call transmission via the IMS 500 (emergency call transmission by VoLTE) is supported in the VPLMN. Further, the HSS 100 returns Dia_ULA including an indicator (EM supported or EM not supported) indicating whether or not the emergency call transmission is supported to the MME 300. Further, the MME 300 returns an Attach Accept including the same indicator to the UE 20.
- Dia_ULR received from the MME 300
- the HSS 100 determines whether or not emergency call transmission via the IMS 500 (emergency call transmission by VoLTE) is supported in the VPLMN. Further, the HSS 100 returns Dia_ULA including an indicator (EM supported or EM not supported) indicating whether or not the emergency call transmission is supported to the MME 300. Further, the MME 300 returns an Attach Accept including the same indicator to the UE 20.
- the UE 20 can quickly determine whether or not the emergency call transmission is supported in the VPLMN in which the UE 20 is located. This prevents the UE 20 from attempting an emergency call transmission via the IMS 500 in the VPLMN even though the emergency call transmission is not supported. That is, it is possible to avoid failure of emergency call transmission via the IMS 500 when the UE 20 connects to the VPLMN.
- the HSS 100 can determine whether or not the emergency call transmission is supported based on the presence or absence of the emergency call transmission arrangement between the HPLMN and the VPLMN. Thereby, after confirming that the arrangement exists on the HPLMN side, the UE 20 can reliably execute the emergency call.
- the HSS 100 can determine whether or not the emergency call transmission is supported based on the type of the UE 20. As a result, on the HPLMN side, after confirming the type of mobile station that can support the VPLMN, the UE 20 can reliably execute the emergency call.
- the HSS 100 can determine whether or not the emergency call transmission is supported based on the user type (subscriber type) of the UE 20. As a result, on the HPLMN side, after confirming the types of subscribers that can handle the VPLMN, the UE 20 can reliably execute the emergency call.
- control in an ESM (EPS Session Management) layer will be described as an example.
- ESM EPS Session Management
- FIG. 8 is an explanatory diagram of an operation for notifying the UE 20 of an indicator indicating whether or not emergency call transmission via the IMS 500 is supported.
- the MME 300 transmits a GTPv2 Create Session Request to the PGW 200 based on the PDN connectivityArequest included in the Attach Request from the UE 20 ((2) and (4) in FIG. 8). .
- the PGW 200 having received the GTPv2 Create Session Request determines whether or not an emergency call can be made via the emergency call providing domain in the VPLMN, that is, the IMS 500, by the same operation as the HSS 100 of the first embodiment ((5)).
- the PGW 200 sets an indicator (first support indicator) indicating whether the emergency call transmission is supported for the UE 20 based on the determination result of the emergency call transmission.
- the PGW 200 sets “PCO (EM acceptable)” as the indicator when emergency call transmission is supported.
- PCO is an abbreviation for ProtocolProConfiguration Option.
- the PGW 200 sets “PCO (EM unavailable)” as the indicator.
- FIG. 8 shows an example in which “PCO (EM impossible)” is set. Such an indicator is not defined in the existing 3GPPGPTS, but is newly defined.
- PGW200 uses GTPv2 Create Session Response including “PCO (EM not allowed)” Return it to the MME300 (same as (6)).
- the MME300 transmits (transfers) the PCO included in the received GTPv2-Create-Session-Response as it is, and responds to the EPS-Bearer-Context Request (specifically, Active-Default-EPS-Bearer-Context-Request) included in the Attach-Accept that is returned to the UE 20 PCO, specifically, “PCO (EM not allowed)” (second support indicator) is included ((7) and (8)).
- EPS-Bearer-Context Request specifically, Active-Default-EPS-Bearer-Context-Request
- PCO EM not allowed
- the UE 20 that receives the Attach Accept including the PCO recognizes that an emergency call cannot be made via the EVP UMN (LTE) of VPLMN.
- UE20 performs fallback (CSFB) to UTRAN (3G CS), and makes an emergency call to MSC30 ((9) and (10)).
- CSFB fallback
- FIG. 9 is a functional block configuration diagram of the PGW 200 according to the present embodiment.
- the PGW 200 constitutes a communication control device in this embodiment.
- the PGW 200 includes a Session Request reception unit 210, an emergency call provision domain determination unit 220, a visited network DB231, a mobile station type DB233, a subscriber type DB235, and a Session ⁇ Response transmission unit 240.
- the functional block configuration of the PGW 200 is almost the same as that of the HSS 100 according to the first embodiment.
- the main differences from the HSS 100 are a Session Request receiving unit 210 that receives a GTPv2 Create Session Request from the MME 300 via the SGW 400, and a Session Response sending unit 240 that sends a GTPv2 Create Session Response to the MME 300 via the SGW 400.
- the PGW 200 determines whether or not the emergency call transmission is possible by the control (EPS bearer context) in the ESM layer.
- the same effect as that of the first embodiment can be obtained.
- Whether the HSS 100 or the PGW 200 determines whether or not to issue the emergency call can be determined according to the network configuration of the HPLMN and the VPLMN.
- FIG. 10 is an explanatory diagram of an operation for notifying the UE 20 of an indicator indicating whether or not emergency call transmission via the IMS 500 is supported.
- the UE 20 specifically sends an Attach ⁇ Request transmission and an Attach Accept reception operation ((1) to (4) in FIG. 10) to the IMS 500 specifically. Transmits SIP_REGSISTER to the SIP server 510 constituting the IMS 500 ((5)).
- the SIP server 510 that has received the SIP_REGSISTER determines whether or not an emergency call can be made via the emergency call providing domain in the VPLMN, that is, the IMS 500, by the same operation as the HSS 100 of the first embodiment ((6)).
- the SIP server 510 sets an indicator (first support indicator) indicating whether or not emergency call transmission is supported for the UE 20 based on the determination result of the emergency call transmission.
- the SIP server 510 transmits “SIP 200 OK (EM OK)” that is a SIP message including the indicator to the UE 20.
- the SIP server 510 transmits “SIP 200 OK (EM impossible)”, which is a SIP message including the indicator, to the UE 20.
- the UE 20 that has received “SIP 200 OK (EM not possible)” via the PGW 200 and the SGW 400 recognizes that an emergency call cannot be made via the VPLMN E-UTRAN (LTE). As a result, UE20 performs fallback (CSFB) to UTRAN (3G CS), and makes an emergency call to MSC30 ((8) and (9)).
- CSFB fallback
- FIG. 11 is a functional block configuration diagram of the SIP server 510 according to the present embodiment.
- the SIP server 510 constitutes a communication control device in this embodiment.
- the SIP server 510 includes a SIP signal processing unit 511, an emergency call provision domain determining unit 513, a visited network DB 521, a mobile station type DB 523, and a subscriber type DB 525.
- the functional block configuration of the SIP server 510 is substantially the same as that of the HSS 100 according to the first embodiment.
- the main difference from the HSS 100 is a SIP signal processing unit 511 that transmits and receives a SIP message.
- the SIP signal processing unit 511 transmits “SIP 200 OK (EM unavailable)” to the UE 20 via the PGW 200 and the SGW 400.
- the SIP server 510 determines whether or not the emergency call transmission is possible by the control (Registration) in the IMS layer, but the same effect as in the first embodiment can be obtained. Whether the HSS 100 or the SIP server 510 determines whether or not the emergency call transmission is possible can be determined according to the network configuration of the HPLMN, the VPLMN, and the IMS 500.
- the emergency call providing domain is IMS500
- the type of mobile station for which operation in VPLMN is guaranteed and (iii) the type of user (subscriber type)
- an indicator that allows an emergency call to be sent EM supported
- the emergency call It may be determined whether or not it is supported.
- EM ⁇ supported or EM not supported is included in the Attach Accept to control (regulate) emergency call transmission via the IMS500 in the VPLMN.
- the emergency call transmission in the VPLMN may be controlled by restricting Emergency Registration that is an emergency call registration of the UE 20 to the IMS 500.
- the emergency-Registration is regulated, and as a result, the emergency call by the UE 20 is performed. You may regulate outgoing calls.
- LTE has been described as an example, but LTE includes LTE-Advanced and is not limited to LTE. Further, the UE 20 fallback destination radio access network is not limited to UTRAN, and may be GERAN or the like.
- the communication control apparatus According to the mobile communication system, the communication control apparatus, the mobility management entity, and the mobile communication method described above, it is possible to avoid failure of the emergency call transmission via the IMS when the mobile station is connected to the VPLMN.
- Mobile communication system 20 UE 30 MSC 40 CS domain 100 HSS 110 Dia_ULR receiving part 120 Emergency call providing domain judgment part 131 Regional network DB 133 Mobile station type DB 135 Subscriber type DB 140 Dia_ULA transmitter 200 PGW 210 Session Request Receiving Unit 220 Emergency Call Provision Domain Determination Unit 231 Network DB 233 Mobile station type DB 235 Subscriber type DB 240 Session Response transmitter 300 MME 310 Attach Request receiver 320 Dia_ULR transmitter 330 Dia_ULA receiver 340 Indicator processor 350 Agreement information DB 360 Attach Accept Transmitter 400 SGW 500 IMS 510 SIP server 511 SIP signal processing unit 513 Emergency call providing domain determination unit 521 Network DB 523 Mobile station type DB 525 Subscriber type DB
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Abstract
Description
本発明の一態様に係る移動通信方法は、移動局のホームネットワークに設けられる通信制御装置と、移動局の在圏ネットワークに設けられる移動管理エンティティと、緊急呼用のパケットを処理するマルチメディアサブシステムとを含む移動通信システムにおいて用いられる。
まず、本発明の第1実施形態について、図1~図7を参照して説明する。本実施形態では、EMM(EPS Mobility Management)レイヤにおける制御(Attach)を例として説明する。
図1は、本実施形態に係る移動通信システム10の全体概略構成図である。図1に示すように、移動通信システム10は、移動局20(以下、User Equipment 20(UE20))、具体的には、Home Public Land Mobile Network(HPLMN)に設けられるHome Subscriber Server 100(以下、HSS100)及びPDN Gateway 200(以下、PGW200)を含む。
次に、移動通信システム10に含まれるHSS100及びMME300の機能ブロック構成について説明する。
図2は、HSS100の機能ブロック構成図である。図2に示すように、HSS100は、Dia_ULR受信部110、緊急呼提供ドメイン判定部120、在圏ネットワークDB131、移動局種別DB133、加入者種別DB135及びDia_ULA送信部140を備える。なお、各機能ブロックは、プロセッサ(メモリを含む)、機能モジュール(ネットワークIFなど)及び電源などのハードウェア要素によって実現される。
図3は、MME300の機能ブロック構成図である。図3に示すように、MME300は、Attach Request受信部310、Dia_ULR送信部320、Dia_ULA受信部330、インジケータ処理部340、取り決め情報DB350及びAttach Accept送信部360を備える。なお、各機能ブロックは、プロセッサ(メモリを含む)、機能モジュール(ネットワークIFなど)及び電源などのハードウェア要素によって実現される。
次に、上述した移動通信システム10の動作について説明する。具体的には、VPLMNに在圏するUE20に対して、緊急呼発信がサポートされているか否かを、HPLMNに設けられたHSS100と連携して指示する動作について説明する。
図4は、UE20に対してIMS500経由による緊急呼発信がサポートされているか否かを示すインジケータを通知する動作シーケンスを示す。また、図5は、UE20に対してIMS500経由による緊急呼発信がサポートされているか否かを示すインジケータを通知する動作の説明図である。
次に、上述した動作シーケンスに基づく動作を実行する場合における装置の動作について説明する。具体的には、HPLMNに設けられるHSS100の動作フロー、及びVPLMNに設けられるMME300の動作フローについて説明する。
図6は、HPLMNに設けられるHSS100の動作フローを示す。図6に示すように、HSS100は、MME300からDia_ULRを受信すると、VPLMNでの緊急呼提供ドメインが、IMS500またはCSドメイン40の何れかを判定する(S110)。具体的には、HSS100は、HPLMNとVPLMNとの間において、IMS500経由による緊急呼発信の取り決めがあるか否かに基づいて、VPLMNでの緊急呼提供ドメインを判定する。
図7は、VPLMNに設けられるMME300の動作フローを示す。図7に示すように、MME300は、HSS100からDia_ULAを受信すると、当該Dia_ULAがIMS500経由による緊急呼発信がサポートされているか否かを示すインジケータ(EM supportedまたはEM not supported)を含んでいるか否かを判定する(S210)。
本実施形態によれば、以下の作用効果が得られる。HSS100は、MME300から受信したDia_ULRに基づいて、IMS500経由による緊急呼発信(VoLTEによる緊急呼発信)が、VPLMNにおいてサポートされているか否かを判定する。また、HSS100は、当該緊急呼発信がサポートされているか否かを示すインジケータ(EM supportedまたはEM not supported)を含むDia_ULAをMME300に返送する。さらに、MME300は、同様のインジケータを含むAttach AcceptをUE20に返送する。
次に、本発明の第2実施形態について説明する。本実施形態では、ESM(EPS Session Management)レイヤにおける制御(EPS bearer context)を例として説明する。なお、以下では、上述した第1実施形態と異なる部分について主に説明し、同様の部分については、適宜その説明を省略する。
MME300に返送する(同(6))。
次に、本発明の第3実施形態について説明する。本実施形態では、IMS(IP Multimedia Subsystem)レイヤにおける制御(Registration)を例として説明する。なお、以下でも、上述した第1実施形態と異なる部分について主に説明し、同様の部分については、適宜その説明を省略する。
以上、実施形態に沿って本発明の内容を説明したが、本発明はこれらの記載に限定されるものではなく、種々の変形及び改良が可能であることは、当業者には自明である。
20 UE
30 MSC
40 CSドメイン
100 HSS
110 Dia_ULR受信部
120 緊急呼提供ドメイン判定部
131 在圏ネットワークDB
133 移動局種別DB
135 加入者種別DB
140 Dia_ULA送信部
200 PGW
210 Session Request受信部
220 緊急呼提供ドメイン判定部
231 在圏ネットワークDB
233 移動局種別DB
235 加入者種別DB
240 Session Response送信部
300 MME
310 Attach Request受信部
320 Dia_ULR送信部
330 Dia_ULA受信部
340 インジケータ処理部
350 取り決め情報DB
360 Attach Accept送信部
400 SGW
500 IMS
510 SIPサーバ
511 SIP信号処理部
513 緊急呼提供ドメイン判定部
521 在圏ネットワークDB
523 移動局種別DB
525 加入者種別DB
Claims (7)
- 移動局のホームネットワークに設けられる通信制御装置と、
前記移動局の在圏ネットワークに設けられる移動管理エンティティと、
緊急呼用のパケットを処理するマルチメディアサブシステムと
を含む移動通信システムであって、
前記通信制御装置は、
前記在圏ネットワークにおいて前記マルチメディアサブシステム経由による緊急呼発信がサポートされているか否かを判定する緊急呼提供ドメイン判定部と、
前記緊急呼提供ドメイン判定部による前記緊急呼発信の判定結果に基づいて、前記緊急呼発信がサポートされているか否かを示す第1サポート指示子を含む信号を前記移動管理エンティティに送信する指示子送信部と
を備え、
前記移動管理エンティティは、
前記通信制御装置から前記第1サポート指示子を受信する指示子受信部と、
前記移動局からの前記在圏ネットワークへの接続要求に対する応答を前記移動局に送信する応答送信部と
を備え、
前記応答送信部は、前記指示子受信部が受信した前記第1サポート指示子に基づいて、前記緊急呼発信がサポートされているか否かを示す第2サポート指示子を含む前記応答を前記移動局に送信する移動通信システム。 - 前記緊急呼提供ドメイン判定部は、前記ホームネットワークと前記在圏ネットワークとの間における前記マルチメディアサブシステム経由による前記緊急呼発信の取り決めの有無に基づいて、前記緊急呼発信がサポートされているか否かを判定する請求項1に記載の移動通信システム。
- 前記緊急呼提供ドメイン判定部は、前記移動局の種別に基づいて、前記緊急呼発信がサポートされているか否かを判定する請求項1または2に記載の移動通信システム。
- 前記緊急呼提供ドメイン判定部は、前記移動局のユーザの種別に基づいて、前記緊急呼発信がサポートされているか否かを判定する請求項1乃至3の何れか一項に記載の移動通信システム。
- 移動局の在圏ネットワークに設けられる移動管理エンティティと、
緊急呼用のパケットを処理するマルチメディアサブシステムと
を含む移動通信システムにおいて用いられ、前記移動局のホームネットワークに設けられる通信制御装置であって、
前記在圏ネットワークにおいて前記マルチメディアサブシステム経由による緊急呼発信がサポートされているか否かを判定する緊急呼提供ドメイン判定部と、
前記緊急呼提供ドメイン判定部による前記緊急呼発信の判定結果に基づいて、前記緊急呼発信がサポートされているか否かを示す第1サポート指示子を含む信号を前記移動管理エンティティまたは前記移動局に送信する指示子送信部と
を備える通信制御装置。 - 移動局のホームネットワークに設けられる通信制御装置と、
緊急呼用のパケットを処理するマルチメディアサブシステムと
を含む移動通信システムにおいて用いられ、前記移動局の在圏ネットワークに設けられる移動管理エンティティであって、
前記通信制御装置から、記在圏ネットワークにおいて前記マルチメディアサブシステム経由による緊急呼発信がサポートされているか否かを示す第1サポート指示子を受信する指示子受信部と、
前記移動局からの前記在圏ネットワークへの接続要求に対する応答を前記移動局に送信する応答送信部と
を備え、
前記応答送信部は、前記指示子受信部が受信した前記第1サポート指示子に基づいて、前記緊急呼発信がサポートされているか否かを示す第2サポート指示子を含む前記応答を前記移動局に送信する移動管理エンティティ。 - 移動局のホームネットワークに設けられる通信制御装置と、
前記移動局の在圏ネットワークに設けられる移動管理エンティティと、
緊急呼用のパケットを処理するマルチメディアサブシステムと
を含む移動通信システムにおける移動通信方法であって、
前記通信制御装置が、前記在圏ネットワークにおいて前記マルチメディアサブシステム経由による緊急呼発信がサポートされているか否かを示す第1サポート指示子を含む信号を前記移動管理エンティティに送信するステップと、
前記移動管理エンティティが、前記通信制御装置から前記第1サポート指示子を受信するステップと、
前記移動管理エンティティが、前記移動局からの前記在圏ネットワークへの接続要求に対する応答を前記移動局に送信するステップと
を備え、
前記応答を前記移動局に送信するステップでは、前記移動管理エンティティが、受信した前記第1サポート指示子に基づいて、前記緊急呼発信がサポートされているか否かを示す第2サポート指示子を含む前記応答を前記移動局に送信する移動通信方法。
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Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009505455A (ja) * | 2005-08-02 | 2009-02-05 | クゥアルコム・インコーポレイテッド | Voip緊急呼出支援 |
US20120015623A1 (en) * | 2008-06-02 | 2012-01-19 | Research In Motion Limited | Privacy-Related Requests For An IMS Emergency Session |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7174114B2 (en) * | 2004-07-29 | 2007-02-06 | Hewlett-Packard Development Company, Lp. | Apparatus and method for reducing contamination of an image transfer device |
US8340626B2 (en) * | 2006-04-28 | 2012-12-25 | Qualcomm Incorporated | System and method for supporting voice call continuity for VOIP emergency calls |
GB2466677B (en) * | 2009-01-06 | 2012-09-19 | Samsung Electronics Co Ltd | Voice communication between user equipment and network |
WO2012095197A1 (en) * | 2011-01-13 | 2012-07-19 | Telefonaktiebolaget L M Ericsson (Publ) | Roaming control for ims apn |
KR20130038773A (ko) * | 2011-10-10 | 2013-04-18 | 삼성전자주식회사 | 이동 통신 시스템에서 응급 호 서비스 장치 및 방법 |
US9654954B2 (en) * | 2012-01-26 | 2017-05-16 | Telefonaktiebolaget Lm Ericsson (Publ) | Providing an IMS voice session via a packet switch network and an emergency voice session via a circuit switch network |
US8853069B2 (en) * | 2012-09-10 | 2014-10-07 | Globalfoundries Inc. | Field effect transistor and method of fabrication |
-
2016
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Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009505455A (ja) * | 2005-08-02 | 2009-02-05 | クゥアルコム・インコーポレイテッド | Voip緊急呼出支援 |
US20120015623A1 (en) * | 2008-06-02 | 2012-01-19 | Research In Motion Limited | Privacy-Related Requests For An IMS Emergency Session |
Non-Patent Citations (3)
Title |
---|
"3rd Generation Partnership Project; Technical Specification Group Services and System Aspects; General Packet Radio Service (GPRS) enhancements for Evolved Universal Terrestrial Radio Access Network (E-UTRAN) access (Release 13)", 3GPP TS 23.401 V13.2.0, March 2015 (2015-03-01), XP050927727 * |
NTT DOCOMO: "Discussion on Voice Retry in CS Domain", 3GPP TSG-SA WG2 #110 S2-152208, 10 July 2015 (2015-07-10), XP050987301 * |
See also references of EP3297304A4 * |
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