JP6498109B2 - Method for acquiring terminal information without authentication of mobile communication service, communication service device and program - Google Patents

Description

  The present invention relates to the technology of a mobile communication service system that can be used in an emergency.

The mobile communication service system conceptually has the following three networks.
"Wireless access network"
"Packet core network"
"Service core network"

The “radio access network” is configured by an eNB (evolved Node B) as a large number of base stations, and for example, a radio technology of Universal Mobile Telecommunications System (UMTS) or Long Term Evolution (LTE) is applied.
In particular, an EPC (Evolved Packet Core) is defined as a "packet core network" compatible with LTE (see, for example, non-patent publication 1). The EPC accommodates a large number of eNBs by an MME (Mobility Management Entity) and an SGW (Serving-Gateway). The MME, as a core network controller, has an interface with a mobile terminal (UE (User Equipment)) via a radio access network. The MME executes not only mobility management of the terminal but also setting control of the IP transfer route. In addition, the SGW executes transmission control of an IP packet based on control from the MME.

Furthermore, PGW (PDN-Gateway) and PCRF (Policy and Charging Rules Function) are also arranged in the EPC.
The PGW is a connection point with a packet data network (PDN) such as the Internet or an IP multimedia subsystem (IMS), and relays IP packets transmitted and received between the PDN and a mobile terminal.
The PCRF determines IP packet transmission policies such as QoS (Quality of Service) and charging method for performing transmission quality control in the PGW and SGW.

  In the "service core network", standardized service control methods such as "location information service" and "broadcast service" in an application server are defined.

  The “location information service” is provided by using, for example, the non-patent publication 2 for controlling the control signal of the packet core network, for example, by SUPL (for example, non-patent publication 3). A SUPL Location Platform (SLP) located in the service core network transmits positioning information to the mobile terminal, and a SU (SUPL Enabled Terminal) of the mobile terminal calculates positioning based on the GPS (Global Positioning System) .

  The "broadcast service" is also provided by the CBC (Cell Broadcast Center) of the service core network using control signals of the packet core network (see, for example, Non-Patent Document 4). The CBC broadcasts an emergency paging signal and a system information block to terminals in a designated area range via an MME / eNB based on an emergency request from a CBE (Cell Broadcast Entity) corresponding to a public organization etc. Do.

3GPP TS 23.401 "General Packet Radio Service (GPRS) enhancements for Evolved Universal Terrestrial Radio Access Network (E-UTRAN) access" 3GPP TS 23.271 "Functional stage 2 description of Location Services (LCS)" OMA Secure User Plane Location V2.1 "Secure User Plane Location Architecture" 3GPP TS 23.041 "Technical realization of Cell Broadcast Service (CBS)"

  For example, when a natural disaster or the like occurs in a wide area, a communication isolation area in which a terminal owned by a user is disconnected from the wide area network is generated due to a power failure, base station collapse, backhaul circuit disconnection or the like. In this case, measures are taken to enable the terminal to connect to the wide area network as much as possible by bringing in the base station or communication facility equipped with the function of connecting to the wide area network to the communication isolated area. Ru. Since a base station and communication facilities are carried by, for example, a car, a balloon, or a helicopter, it takes a relatively long time to actually be able to communicate.

  On the other hand, in areas where natural disasters have occurred, a large number of rescue teams are thrown in and the rescuer searches for the rescuer in the highest priority, so for rescue activities, the terminal information of the terminal possessed by the rescuer is quicker It is desirable to obtain. The terminal information includes, for example, position information based on GPS and a telephone number of the terminal. However, as long as the connection from the terminal to the wide area network is broken, terminal information can not be acquired from the terminal.

  In addition, there is a problem in cost in constructing a dedicated telecommunications facility used only in the telecommunications isolated area. For that purpose, it is conceivable to mount the entire system of the existing EPC and application server built as software in portable hardware and use it as the communication business facility. The entire software system can be incorporated into one communication service device.

  Here, in a region disconnected from the wide area network, how is the mobile communication service system specifying the terminal and acquiring position information without executing an authentication sequence based on subscriber information with the terminal? ? Is a problem.

  The subscriber information is usually registered at the time of subscription of the user. However, with respect to a communication isolated area where a natural disaster or the like occurs suddenly, it is not possible to register in advance the subscriber area of the area range and the terminal staying there. Of course, it is also impossible to register in advance the subscriber information of all the mobile phone contractors in Japan in the portable device installed in the communication isolated area.

  Therefore, the present invention provides a terminal information acquisition method, communication service apparatus, and program capable of acquiring terminal information without executing an authentication sequence based on subscriber information with the terminal in an emergency. Intended to provide.

According to the present invention, in a system having a terminal, a base station, a core network controller and an application server, the application server acquires terminal information without executing an authentication sequence between the terminal and the core network controller. How to
A first step in which the base station broadcasts an emergency access request signal to the terminal;
A second step in which the terminal establishes an emergency access channel with the core network controller;
A third step of the core network control device transmitting to the application server address information of the terminal based on the emergency access channel;
And a fourth step of acquiring terminal information from the terminal based on the address information.

According to another embodiment of the terminal information acquisition method of the present invention,
About the fourth step
The application server sends an information acquisition request to the terminal based on the address information,
The terminal establishes a secure communication path with the application server,
It is also preferred that the terminal sends the terminal information to the application server through the secure channel.

According to another embodiment of the terminal information acquisition method of the present invention,
About the fourth step
The terminal information is position information based on an A-GPS (Assisted-GPS) positioning method of the terminal,
The application server transmits assist data to the terminal through the secure communication path,
The terminal preferably executes GPS positioning based on the assist data, and transmits the position information as terminal information to the application server through the secure channel.

According to another embodiment of the terminal information acquisition method of the present invention,
About the fourth step
Terminal information is the telephone number of the terminal,
The terminal also preferably transmits the telephone number as terminal information to the application server through the secure communication channel.

According to another embodiment of the terminal information acquisition method of the present invention,
The application server has a CBC (Cell Broadcast Center) function,
For the first step,
The application server sends an emergency request to the core network controller,
It is also preferred that the core network controller sends an emergency access request signal corresponding to the emergency request to the terminal via the base station.

According to another embodiment of the terminal information acquisition method of the present invention,
The emergency access request signal in the first step is
Consisting of a paging signal with a bit of Earthquake and Tsunami Warning System ETWS (Earthquake and Tsunami Warning System) and a system information block corresponding to the first report and the second report of earthquake and tsunami warning system ETWS, or
It is also preferred that the system information block only consist.

According to another embodiment of the terminal information acquisition method of the present invention,
The emergency access request signal in the first step is:
As a condition for the terminal to activate the second step, it comprises a request type, a random access timer and a target terminal identifier, or
It is also preferred that it consists only of the request type.

According to another embodiment of the terminal information acquisition method of the present invention,
The core network controller includes an MME (Mobility Management Entity) and a Policy and Charging Rules Function (PCRF) in EPC (Evolved Packet Core),
Preferably, for the third step, the PCRF sends to the application server address information of the terminal based on the emergency access channel.

According to another embodiment of the terminal information acquisition method of the present invention,
It is also preferable that the base station, the core network controller and the application server be located in a communication isolation area disconnected from the wide area network.

According to the present invention, there is provided a communication service apparatus in which a base station function, a core network control function, and an application server function are integrally incorporated, and terminal information is acquired without executing an authentication sequence with the terminal.
The base station function broadcasts the emergency access request signal to the terminal,
The core network control function establishes an emergency access communication path with the terminal, and transmits the address information of the terminal based on the emergency access communication path to the application server function.
The application server function is characterized in that terminal information is acquired from a terminal based on address information.

According to the present invention, a computer mounted on a communication service apparatus that integrates a base station function, a core network control function and an application server function integrally and acquires terminal information without executing an authentication sequence with the terminal is obtained. A program that makes it work,
The base station function broadcasts the emergency access request signal to the terminal,
The core network control function establishes an emergency access communication path with the terminal, and transmits the address information of the terminal based on the emergency access communication path to the application server function.
The application server function is characterized by causing a computer to function so as to obtain terminal information from a terminal based on address information.

  According to the terminal information acquisition method, communication service apparatus and program of the present invention, in an emergency, the mobile communication service system acquires terminal information without executing an authentication sequence based on subscriber information with the terminal. it can. By this, even in the core network in which the subscriber information is not registered in advance, the terminal information can be acquired securely.

It is a system configuration figure in the present invention. It is a sequence diagram in the present invention. It is a sequence diagram showing establishment of an emergency access channel in EPC. It is a sequence diagram for an application server to acquire a positional information or a telephone number from a terminal.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a system configuration diagram in the present invention.

  According to FIG. 1, the communication service device 1 is mounted on, for example, a helicopter or a balloon that can stand by in the air, or a car that can move on the ground. Further, the communication service device 1 of the present invention integrally incorporates a base station function, a core network control function, and an application server function constructed in software. Here, the communication service device 1 is not equipped with a subscriber information server for terminal authentication. The communication service device 1 of the present invention provides a mobile communication service by securely acquiring terminal information without executing an authentication sequence based on subscriber information with a terminal.

According to FIG. 1, the communication service device 1 is conceptually classified into the following three functions.
RAN (Radio Access Network) Function EPC (Evolved Packet Core) Function Application Server (Application Server) Function These functional components are realized by executing a program that causes a computer installed in the communication service apparatus to function.

The terminal 2 is like an existing mobile phone, a smartphone, or a tablet terminal possessed by the user.
“RAN” is configured as a radio access network by eNBs (e-Node B) 13 as a number of base stations, and communicates with the terminal 2 by a radio scheme based on LTE, for example.
The "EPC" functions as a packet core network.
The "application server" functions as a service core network and as a server that controls communication services.

  For example, when a natural disaster or the like occurs in a wide area, the communication service device 1 (base station, core network control device and application server) is disposed in a communication isolated area disconnected from the wide area network. The terminal 2 located in the area where the connection to the wide area network is disconnected communicates only with the communication service device 1.

  For example, when a natural disaster occurs, the communication service device 1 can not register subscriber information of all terminals existing in the area in advance. Further, the communication service device 1 can acquire terminal information from at least a large number of terminals 2 capable of communicating with the eNB 13 without being limited to the terminals contracted with a specific communication carrier. When a natural disaster occurs, the communication service device 1 operated by the rescuer can communicate with the rescuer by enabling communication with as many terminals as possible. By arranging such a communication service device 1, there is no need to construct a dedicated communication business facility which is used only in the communication isolated area.

According to FIG. 1, the application server 11 has the following three functions.
AF / SLP
(Application Function / SUPL (Secure User Plane Location) Location Platform)
CBC (Cell Broadcast Center)

For AF / SLP, the SLP establishes a secure communication path, such as TLS (Transport Layer Security), with the terminal 2 and executes a SUPL (Secure User Plane Location) communication sequence via the communication path. This is a function of requesting the terminal 2 for position information based on an A-GPS (Assisted-GPS) positioning method.
The AF has a function of transmitting an emergency request to and from the CBC, for example, as a CBE (Cell Broadcast Entity) operated by a specific organization. For example, it may have a function of establishing a secure communication channel such as TLS and acquiring terminal information such as a telephone number via the communication channel.

  The CBC is a function to broadcast a message to an unspecified number of terminals located in a designated area range. Specifically, the CBC functions to send an emergency message signal to the EPC 12 upon receiving an emergency request from the AF / SLP. This emergency message is forwarded from the EPC 12 to the eNB 13. The eNB 13 functions to divide and broadcast this emergency message into an emergency paging signal and a system information block. This technology is mainly used in the earthquake and tsunami warning system ETWS (Earthquake and Tsunami Warning System). The emergency paging signal is limited, according to the existing technology, to a highly reliable and urgent message such as an earthquake early warning. Therefore, CBC is usually executed only upon receiving an urgent request from a Cell Broadcast Entity (CBE) operated by a specific organization.

  However, in areas where natural disasters have occurred, many rescue teams are deployed, resulting in a mix of victims and rescuers. In such a case, if it is possible to broadcast a message such as an emergency alert to the terminal possessed by the user, it is considered effective for the rescue operation. According to the present invention, the function of CBC is used because it assumes a large number of terminals located in the area range where the wide area network is disconnected.

  FIG. 2 is a flowchart in the present invention.

  When establishing a secure communication path such as, for example, TLS, the terminal 2 and the AF of the application server 11 preferably set a server certificate and a root certificate in advance.

[First step]
According to the invention, the terminal 2 first receives at least an emergency paging signal and a system information block as an emergency access request signal. As the trigger, for example, there are the following two embodiments.
<First embodiment: based on an emergency request sent from an application server>
<Embodiment 2: Based on activation of disaster only mode>

<First embodiment: based on an emergency request sent from an application server>
The application server 11 transmits an emergency request to the EPC (core network control device) 12. First, in the application server 11, the AF transmits an Emergency Broadcast Request to the CBC. The emergency request includes the following parameters:
Type: Message type
Timer: Access start timer
Flag: Access target flag
Area: Origination area range identifier
Message: "Obtain device information for location confirmation"

Type includes "urgent access request". Specifically, the format may include a purpose of “emergency access request for acquiring location information” or “emergency access request for acquiring a telephone number”.
The Timer requests the terminal for random access within the timer time. For example, if Timer = 30 seconds, the terminal is requested to access at random timing within 30 seconds.
The Flag requires that only the terminal for which the flag condition is true be accessed. For example, it may be one or more digits. The terminal 2 recognizes that the number is an emergency access target if the number matches the end of the telephone number MSISDN (Mobile Station International Subscriber Directory Number) or the terminal number IMEI (International Mobile Equipment Identity). Of course, it may be a match of the upper digit number or a match of the total digit number.
The Timer and the Flag function so that a large number of terminals 2 start applications for emergency access at the same time and narrow down the target terminals in order to avoid the network congestion caused thereby.

The CBC of the application server 12 converts the received emergency request into an emergency broadcast message (SBc: WRITE-REPLACE WARNING REQUEST) and sends it to the MME of the EPC 12. For example, it is mapped as follows.
[Emergency request received from AF]-> [Emergency broadcast message for MME]
Type-> Warning-Type
Timer-> Warning Message Content E-UTRAN
CBS-Message-Information-Page 1
Flag-> Warning Message Content E-UTRAN
CBS-Message-Information-Page 2
Area-> Warning Area List
Message-> Warning Message Content E-UTRAN
CBS-Message-Information-Page 3
The CBC identifies an MME managing an eNB based on the Warning Area List, and transmits an emergency broadcast message to the MME.

The Warning-Type may be a value that matches the parameter for the terminal to activate the emergency application. Although it may overlap with the existing Warning-Type Value, it is desirable to use a non-overlapping value. This parameter value is an element value included in the first report of the earthquake and tsunami warning system ETWS.
Warning Message Content CBS-Message-Information-Page of E-UTRAN indicates a message character string, and it may be a value that matches the parameter for the terminal to activate the emergency application. Of course, the order of Timer, Flag, and Message may be different. This parameter value is an element value included in the second report of the earthquake and tsunami warning system ETWS.
Also, Timer and Flag may be new parameters as follows. In this case, it is assumed that only the Message is included in the CBS-Message-Information-Page of the Warning Message Content E-UTRAN. These new parameter values are to be positioned as element values included in the first report of the earthquake and tsunami warning system ETWS.
Timer-> New parameter (Emergency-Access-Timer)
Flag-> New parameter (Emergency-Access-Terminal-Flag)
Message-> Warning Message Content E-UTRAN
CBS-Message-Information-Page 1

The MME of EPC 12 converts the received emergency broadcast message into an eNB-oriented emergency broadcast message (S1AP: WRITE-REPLACE WARNING REQUEST), and transfers it to eNB 13. For example, it is mapped as follows.
[MME reception message]-> [Emergency broadcast message for eNB]
Warning-Type-> Warning Type
Warning Area List-> Warning Area List
Warning Message Content E-UTRAN
CBS-Message-Information-Page 1-> Warning Message Contents
Warning Message Content E-UTRAN
CBS-Message-Information-Page 2-> Warning Message Contents
Warning Message Content E-UTRAN
CBS-Message-Information-Page 3-> Warning Message Contents

When Timer and Flag are new parameters, they are mapped, for example, as follows.
Emergency-Access-Timer-> New parameter (Emergency-Access-Timer)
Emergency-Access-Terminal-Flag
-> New parameter (Emergency-Access-Terminal-Flag)

  When the eNB 13 receives the emergency broadcast message, the eNB 13 broadcasts an emergency paging signal (RRC: Paging) to the terminal 2 subordinate to the eNB 13 as an emergency access request signal. When the Warning Area List is set, the emergency paging signal is transmitted only to the terminal 2 staying in the area range.

  The emergency paging signal can be received without any registration of the terminal 2 in the network. The emergency paging signal is a paging signal to which a bit (etws-Indication) of an earthquake and tsunami warning system ETWS (Earthquake and Tsunami Warning System) is given.

eNB13 transmits an emergency content to the 1st report (SIB10: SystemInformationBlockType10) of earthquake tsunami warning system ETWS as an emergency access request signal following an emergency paging signal.
A few seconds later, an emergency message is transmitted to the second report (SIB 11: SystemInformationBlockType 11) of the earthquake and tsunami warning system ETWS as an emergency access request signal. For example, it is mapped as follows.
[ENB reception message]-> [first report for terminal]
Warning Type-> warningType
[ENB reception message]-> [second report for terminal]
Warning Message Contents-> warningMessageSegmentNumber and
warningMessageSegment
warningMessageSegment is obtained by dividing Warning Message Contents into up to 64 areas, and warningMessageSegmentNumber is the number of the divided area. The area in which the Timer, Flag, and Message are stored may match the parameters for the terminal to activate the emergency application.

When Timer and Flag are new parameters, they are mapped, for example, as follows.
[ENB received message]-> [1st report for UE]
Emergency-Access-Timer-> New parameter (Emergency-Access-Timer)
Emergency-Access-Terminal-Flag-> New Parameter
(Emergency-Access-Terminal-Flag)
When receiving the first report and the second report of the earthquake and tsunami warning system ETWS under the control of the eNB 13, the terminal immediately turns on the display to indicate the contents to the user.
By this, for example, even in a region where a natural disaster has occurred, it is possible to broadcast an emergency message from the rescue team.

<Embodiment 2: Based on activation of disaster only mode>
When the disaster dedicated mode is activated by the EPC 12, the eNB 13 broadcasts a system information block as an emergency access request signal. This is not based on CBC as in the first embodiment, and at least eNB 13 may transmit a system information block. The urgent paging signal is unnecessary and may use SIB1 (SystemInformationBlockType 1) which can be received without any registration of the terminal 2 in the network. As the parameter corresponding to Type: “emergency access request”, for example, the inclusion of the emergency PLMN-ID in the PLMN-IdentityList may be used.
In addition, Timer: “access activation timer” and Flag: “access target flag” may be values that match the parameters for the terminal to activate the emergency application. Therefore, existing parameters of SIB1 may be used, or new parameters may be used. Alternatively, parameters other than SIB1 may be used.

[Second step]
The terminal 2 having received the system information block as the emergency access request signal identifies the emergency access request by the type of the system information block. The system information block Timer accesses randomly within its timer time. Random access timing is secured based on unique terminal information (for example, IMSI and IMEI) and time information of each terminal. In addition, it is determined whether or not unique information such as MSISDN or IMEI matches the Flag condition by the Flag of the system information block. For example, when the Flag is a single digit number, it may be determined whether the one's place of the sum of the IMEI digits matches the Flag. In this case, the number of terminal accesses can be reduced to one tenth on average. Also, in the case where the Flag is a 14-digit number, it may be determined whether or not it completely matches IMEI. In this case, it can be limited to only one terminal. Of course, ideally, it is preferable to target all terminals.

  When it is determined that the terminal 2 is the target terminal to be accessed, the emergency application is immediately activated (according to the present invention, it becomes a trigger to start S2 of FIG. 2). Of course, it is preferable that all the terminals 2 receiving the emergency access request signal immediately activate the emergency application.

  By activating the emergency application, each terminal 2 establishes an “emergency access channel” with the EPC (core network control device) 12. Specifically, an emergency attach / session establishment procedure is performed to establish this emergency access channel.

(S21) The terminal 2 establishes a radio connection (RRC Connection) with the eNB 13. At this time, the terminal 2 includes the following parameters when establishing a wireless connection.
(Parameter) (information)
RRC Establishment Cause-> emergency

(S22) The terminal 2 transmits, to the eNB 13, an emergency attach (NAS: Attach Request) in an RRC signal. The following parameters are included in NAS: Attach Request.
(Parameter) (information)
EPS attach type IE-> EPS emergency attach
EPS mobile identity-> IMSI / IMEI
The EPS mobile identity includes IMSI (International Mobile Subscriber Identity) when the terminal 2 has the USIM, and includes terminal number IMEI (International Mobile Equipment Identity) when the terminal 2 does not have the USIM.
The eNB 13 includes the urgent attach in S1AP: INITIAL UE MESSAGE, and transfers it to the MME in the EPC 12.

(S23) The MME of the EPC 12 transmits a security mode instruction (NAS: SECURITY MODE COMMAND) to the eNB 13. This signal contains a parameter indicating no security. Moreover, when MME of EPC12 does not receive IMEI at S22, the parameter which requests | requires terminal number IMEI is also included.
Then, the eNB 13 transfers the signal to the terminal 2.

(S24) The terminal 2 returns a security mode response (NAS: SECURITY MODE COMPLETE) to the eNB 13. The terminal number IMEI is included in this signal at the request of S23.
And eNB13 transfers the signal to MME of EPC12.

  FIG. 3 is a sequence diagram showing establishment of an emergency access channel in the EPC.

  According to FIG. 3, in the core network control apparatus as the EPC, MME (Mobility Management Entity), SGW (Serving-Gateway), PGW (PDN-Gateway), and PCRF (Policy and Charging Rules Function) are included. They are arranged and execute sequences with each other.

(S241) The MME transmits an urgent session creation request (Create Session Request) to the SGW, and the SGW transfers the signal to the PGW. The signal contains the following parameters:
APN-> sos
IMSI-> part of IMEI acquired in S21 to S23
MEI (ME Identity)-> terminal number IMEI

(S242) The PGW sends an emergency policy request (Gx: Credit Control Request) to the PCRF. The urgent policy request includes the following parameters:
Called-Station-Id AVP-> APN (sos)
Subscription-Id AVP-> IMSI (part of IMEI in S241)
(Or User-Equipment-Info AVP-> terminal number IMEI)
In the case of IPv4, Framed-IP-Address AVP-> IP address assigned to the terminal 2 (In the case of IPv6, Framed-Ipv6-Prefix-> IP address assigned to the terminal 2)

(S243) The PCRF determines the parameters of the urgent policy request. If the parameter Called-Station-Id AVP includes APN (sos) and the Subscription-Id AVP or User-Equipment-Info AVP includes the terminal number IMEI or a part thereof, “No authentication It is determined that the urgent attach of "has been performed".
Then, the PCRF sends an emergency policy response (Gx: Credit Control Answer) to the PGW.

(S244) The PGW generates an emergency access channel based on the emergency policy response. Here, the parameter PCO (Protocol Configuration Options) includes the IP address assigned to the terminal 2.
Then, the PGW transmits an emergency session creation response (Create Session Response) to the SGW.
Similarly, the SGW also creates an emergency access channel and forwards an emergency session creation response to the MME.

(S25) The MME of the EPC 12 transmits an emergency attach success response (S1AP: INITIAL CONTEXT SETUP REQUEST / NAS: Attach Accept) to the eNB 13.
The eNB 13 generates an emergency access channel based on INITIAL CONTEXT SETUP REQUEST.
Then, the eNB 13 transmits the RRC Connection Reconfiguration message including the NAS: Attach Accept to the terminal 2.
The terminal 2 establishes an emergency access channel based on RRC Connection Reconfiguration and NAS: Attach Accept. In addition, the PCO included in NAS: Attach Accept includes the IP address assigned to the terminal 2, and this is used in the emergency access communication path.
Thereafter, RRC Connection Reconfiguration processing and S1AP: INITIAL CONTEXT SETUP RESPONSE processing are executed between the terminal 2, eNB 13 and MME.

(S26) The terminal 2 transmits an emergency attach complete (NAS: Attach Complete) to the eNB 13. The eNB 13 transfers the signal to the MME.
This establishes the emergency access channel and completes the emergency attach / session establishment procedure.

[Third step]
When the PCRF of the EPC (core network control device) 12 determines that “unauthenticated emergency attach has been performed” in S243, it transmits “emergency access terminal notification” to the AF of the application server 11. The emergency access terminal notification includes “terminal number IMEI” and “IP address” as address information of the terminal.
As a result, the AF of the application server 11 can acquire the “terminal number IMEI” and the “IP address” of the large number of terminals 2 that have received the emergency access request signal.

[The fourth step]
The application server 11 acquires “terminal information” from a terminal based on the address information. The terminal information may be "position information" or "telephone number".

  The AF of the application server 11 preferably stores, as a table, the “terminal number IMEI and IP address” received by the emergency access terminal notification, the “position information or telephone number” already acquired, and the “acquisition time”. When receiving the emergency access terminal notification, if the position information or the telephone number has already been obtained for a predetermined time, it is not necessary to execute the fourth step.

  FIG. 4 is a sequence diagram for the application server to acquire location information or a telephone number from a terminal.

  FIG. 4A shows a sequence for the application server to acquire “position information” from the terminal. The terminal information is assumed to be position information based on an A-GPS (Assisted-GPS) positioning method of the terminal.

First, the SLP of the application server 11 transmits a position information acquisition request (information acquisition request: SUPL INIT) to the terminal based on the address information.
On the other hand, the terminal 2 establishes a secure communication path with the application server.
Then, the terminal 2 transmits an assist data request (SUPL POS INIT) to the SLP of the application server 11 via the secure communication path.
On the other hand, the SLP of the application server 11 sends back an assist data response (SUPL POS) to the terminal 2 via the secure communication path.
The terminal 2 executes GPS positioning based on the assist data, and transmits a positioning end notification (SUPL END) to the SLP of the application server 11 via the secure communication path.
Then, the terminal 2 transmits the position information as terminal information to the application server 11 through the secure communication channel.

FIG. 4B shows a sequence for the application server to acquire the “telephone number” from the terminal. The terminal information is assumed to be the telephone number of the terminal.
First, the AF of the application server 11 transmits a telephone number acquisition request (information acquisition request) to the terminal based on the address information.
On the other hand, the terminal 2 establishes a secure communication path with the application server.
Then, the terminal 2 obtains the telephone number MSISDN from the SIM card or the terminal memory, and transmits the telephone number as terminal information to the application server 11 through the secure communication path.

  As described above in detail, according to the terminal information acquisition method, communication service device and program of the present invention, in an emergency, the mobile communication service system executes an authentication sequence based on subscriber information with the terminal. Terminal information can be acquired. By this, even in the core network in which the subscriber information is not registered in advance, the terminal information can be acquired securely.

  According to the present invention, it is possible to provide a communication service to users staying in a region where a natural disaster has occurred or at a specific event site where communication with a wide area network is blocked. In addition, for example, when a natural disaster occurs, in order to rescue the communication of the user of another carrier whose communication business facility has not been restored, the carrier whose communication business facility has already been restored temporarily sends communication service to the user. Can also be provided.

  For the various embodiments of the present invention described above, various modifications, corrections and omissions of the scope of the technical idea and aspect of the present invention can be easily made by those skilled in the art. The above description is merely an example and is not intended to be limiting in any way. The present invention is limited only as defined in the following claims and the equivalents thereto.

1 Communication Service Device 11 Application Server 12 Core Network Controller 13 eNB
2 terminal

Claims (11)

A method for an application server to acquire terminal information without executing an authentication sequence between a terminal and a core network control device, in a system having a terminal, a base station, a core network control device, and an application server, ,
A first step in which the base station broadcasts an emergency access request signal to the terminal;
A second step in which the terminal establishes an emergency access channel with the core network controller;
A third step in which a core network control device transmits to the application server address information of a terminal based on the emergency access channel;
A fourth step of acquiring terminal information from a terminal based on the address information. About the fourth step
The application server transmits an information acquisition request to a terminal based on the address information;
The terminal establishes a secure communication path with the application server,
The method according to claim 1, wherein the terminal transmits the terminal information to the application server through the secure communication channel. About the fourth step
The terminal information is position information based on an A-GPS (Assisted-GPS) positioning method of the terminal,
The application server transmits assist data to the terminal through the secure communication path;
The method according to claim 2, wherein the terminal performs GPS positioning based on the assist data, and transmits the positioning information as the terminal information to the application server through the secure channel. About the fourth step
The terminal information is the telephone number of the terminal,
The method according to claim 2, wherein the terminal transmits the telephone number as the terminal information to the application server through the secure communication channel. The application server has a CBC (Cell Broadcast Center) function,
For the first step,
The application server sends an emergency request to the core network controller,
The method according to any one of claims 1 to 4, wherein a core network controller transmits the emergency access request signal corresponding to the emergency request to a terminal via a base station. The emergency access request signal in the first step is:
Consisting of a paging signal with a bit of Earthquake and Tsunami Warning System ETWS (Earthquake and Tsunami Warning System) and a system information block corresponding to the first report and the second report of earthquake and tsunami warning system ETWS, or
6. A method according to any one of the preceding claims, comprising only system information blocks. The emergency access request signal in the first step is:
As a condition for the terminal to activate the second step, it comprises a request type, a random access timer and a target terminal identifier, or
7. A method according to any one of the preceding claims, characterized in that it consists only of the request type. The core network controller includes an MME (Mobility Management Entity) and a Policy and Charging Rules Function (PCRF) in EPC (Evolved Packet Core),
The method according to any one of the preceding claims, wherein for the third step, the PCRF sends to the application server address information of the terminal based on the emergency access channel. The said base station, the said core network control apparatus, and the said application server are arrange | positioned in the communication isolated area disconnected with respect to the wide area network, The any one of Claim 1 to 8 characterized by the above-mentioned. the method of. A communication service apparatus incorporating a base station function, a core network control function and an application server function integrally and acquiring terminal information without executing an authentication sequence with the terminal,
The base station function broadcasts an emergency access request signal to a terminal,
The core network control function establishes an emergency access communication path with the terminal, and transmits the address information of the terminal based on the emergency access communication path to the application server function.
The communication service apparatus, wherein the application server function acquires terminal information from a terminal based on the address information. A program that causes a computer installed in a communication service apparatus that integrates a base station function, a core network control function, and an application server function integrally and acquires terminal information without executing an authentication sequence with the terminal. ,
The base station function broadcasts an emergency access request signal to a terminal,
The core network control function establishes an emergency access communication path with the terminal, and transmits the address information of the terminal based on the emergency access communication path to the application server function.
The program for a communication service apparatus, wherein the application server function causes a computer to function to acquire terminal information from a terminal based on the address information.

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