KR20070070853A - Emergency message service for mobile communication system - Google Patents

Abstract

An emergency message service method of a mobile communication system is provided to be capable of notifying a subscriber of an emergency in an equivalent region as the subscriber moves to the region, thereby preventing the emergency or inconvenience of the subscriber. An MSC(Mobile Switching Center)/SGSN(Serving GPRS Support Node) receives a subscriber location report message from an RNC(Radio Network Controller)(S100), and confirms whether an emergency message transmission request is included in the location report message(S110). If so, the MSC/SGSN extracts an SAI(Service Area Identifier) from the location report message(S112), and reads an emergency message corresponding to the SAI from an emergency message DB(S114). The MSC/SGSN transmits the corresponding emergency message to a subscriber(S116).

Description

How to provide disaster message for mobile communication system {EMERGENCY MESSAGE SERVICE FOR MOBILE COMMUNICATION SYSTEM}

1 is a signal flow diagram for performing an emergency call function in a conventional mobile communication system;

2 is a flowchart of a disaster message providing method of a mobile communication system according to the present invention;

3 is a signal flow diagram for providing a disaster message according to a first embodiment of the present invention;

4 is a signal flow diagram for providing a disaster message according to a second embodiment of the present invention;

5 is a signal flow diagram for providing a disaster message according to a third embodiment of the present invention.

*** Explanation of symbols for the main parts of the drawing ***

11, 21, 31: mobile communication terminal 13: MSC of the calling party

15: MSC 19, 29, 39 receiving side RNC

23: SGSN 25: GGSN

The present invention relates to a method for providing a disaster message of a mobile communication system, and in particular, to prevent a risk situation or inconvenience that may occur to a subscriber who attempts to enter a disaster-prone area by notifying a disaster of a corresponding area according to the movement of a subscriber. The present invention relates to a disaster message providing method of a mobile communication system.

Currently, the mobile communication system provides various additional services for the convenience of subscribers. Among these supplementary services, the emergency call function is a function that allows subscribers to quickly access disaster relief centers such as police stations and hospitals for help in case of danger.

1 is a signal flow diagram for performing an emergency call function in a conventional mobile communication system. As shown in FIG. 1, in order to perform an emergency call function, a subscriber has a CM (Connection Management) service through a mobile communication terminal 1 to a voice switching system (MSC) 3. A request (CM SERVICE REQUEST) message is transmitted (P1). At this time, the CM service type is set to emergency call establishment.

The MSC (3) sends a CM SERVICE ACCEPT message to the mobile communication terminal (1) to establish a CM connection (P3), whereby the mobile communication terminal (1) sets up an emergency call to the MSC (3) (EMERGENCY SETUP) message. Is transmitted to the MSC 3 (P5), and the MSC 3 transmits a CALL PROCEEDING message to the mobile communication terminal 1 (P7).

The MSC (3) sends a RAB ASSIGNMENT REQUEST message to the RNC (7) to request a RAB connection (P9), whereby the RNC (7) sends an Establish Request (ERQ) message to the MSC (3) to bearer (Bearer). ) Request a resource (P11).

Upon request of the RNC 7, the MSC 3 sends an Establish Confirm (ECF) message to the RNC 7 to establish a bearer connection (P13) .If the RAB is set, the RNC 7 assigns an RAB. The result (RAB ASSIGNMENT RESPONSE) message is sent to the MSC 3 (P15). The MSC 3 sends an Initial Address Message (IAM) message to the LE (Local Exchange) 5 (P17), whereby the LE 5 sends a SETUP message to the Disaster Relief Center 10 (P19). .

The disaster relief center 10 transmits a call processing message to the LE 5 while transmitting an ALERT message to the LE 5 (P21).

Accordingly, the LE (5) transmits an address complete message (ACM) message to the MSC (3) (P23), and the MSC (3) confirming this sends an alert message to the mobile communication terminal (1). Transmit (P25).

The disaster relief center 10 transmits a CONNECT message to the LE 5 (P27), whereby the LE 5 transmits a CONNECT ACKNOWLEDGE message to the disaster recovery center 10 ( P35), and transmits an Answer Message (ANM) to the MSC 3 (P29).

The MSC 3 sends a CONNECT message to the mobile communication terminal 1 (P31), whereby the mobile communication terminal 1 transmits a CONNECT ACKNOWLEDGE message to the MSC 3 (P33). ), An emergency call is established between the mobile communication terminal 1 and the disaster relief center 10 (S37). Accordingly, the subscriber can make a rescue request to the disaster relief center (10).

As described above, the emergency call function in the conventional mobile communication system includes a disaster relief center such as a police station or a hospital by selecting an emergency call button provided to a mobile communication terminal or entering an emergency service number such as 119. ) And an emergency call are provided as a voice call service to ask for help.

Accordingly, emergency call service through MSC, which is a voice service exchange system, is possible, but emergency call service through a Serving GPRS Support Node (SGSN) or Packet Data Serving Node (PDSN), which is a data service exchange system, is impossible. In other words, the conventional emergency call service is implemented in the form of receiving a service by connecting a voice call to the disaster relief center 10 and reporting an urgent situation or an emergency occurring in the vicinity, and based on SGSN or PDSN data There is a problem in that the emergency call service cannot be provided in the service area.

In addition, since the service target is limited to subscribers at risk when using emergency call services, mobile communication subscribers moving to the surrounding areas where traffic accidents, crimes, fires, natural disasters, etc. have occurred, there is a problem that does not recognize this situation.

The present invention has been made to solve the above-described problems, by informing the fact of the disaster of the area in accordance with the movement of the subscriber to prevent the risk situation or inconvenience that can occur in advance to the subscriber to enter the area where the disaster occurred The purpose is to provide a disaster message providing method of the mobile communication system.

Disaster message providing method of a mobile communication system according to the present invention for achieving the above object comprises the steps of: building a database by storing in advance the local identifier of the area where the disaster occurred and the corresponding disaster message; Receiving the current location information of the mobile communication terminal; Searching for the disaster message corresponding to the current location information of the mobile communication terminal; And transmitting the retrieved disaster message to the mobile communication terminal.

Here, the step of constructing a database by storing the local identifier of the disaster area and the corresponding disaster message in advance, the mobile country code (MCC), mobile network code (ID) as an identifier for identifying a service area Save disaster message corresponding to Service Area Identifier (SAI) composed of Code, MNC), Location Area Code (LAC), and Service Area Code (SAC) It is possible to be a step.

The receiving of the current location information of the mobile communication terminal may include: detecting an entry of the mobile communication terminal by a base station controller of a service area where the mobile communication terminal has entered; The base station controller attaches a disaster message transmission request to the mobile communication terminal and service area identifier (SAI) information which is current location information of the mobile communication terminal, and attaches a location report message according to 3GPP standard (LOCATION). REPORT); It is possible to include receiving the location report message generated by the base station controller.

The generating of the location report message at the base station controller may include setting a disaster message transmission for the mobile communication terminal in a field of the location report message; And attaching service area identifier (SAI) information which is current location information of the mobile communication terminal.

The searching of the disaster message corresponding to the current location information of the mobile communication terminal may include determining whether a disaster message transmission is set for the mobile communication terminal in a field of the location report message transmitted by the base station controller. Confirming; Checking the service area identifier when the disaster message transmission is set; It is possible to include the step of retrieving a disaster message corresponding to the service area identifier.

The transmitting of the retrieved disaster message to the mobile communication terminal may include transmitting the disaster message in an unstructured supplementary services data (USSD) message format, wherein the disaster message is a short message service (SMS). It is also possible to send in message format.

Hereinafter, a disaster message providing method of a mobile communication system according to an exemplary embodiment of the present invention will be described in detail with reference to the accompanying drawings. The present invention is based on the basic voice and data service procedures provided by the WCDMA system, and configures an emergency message database in the MSC / SGSN to register and delete a disaster message in the emergency message database, while also providing a subscriber with a mobile communication service. When entering a disaster area where a traffic accident, crime, fire, natural disaster, etc. occurred on the move, MSC / SGSN discloses a method and method for delivering a disaster message stored in an emergency message database to a subscriber.

2 is a flow of a disaster message providing method of a mobile communication system according to the present invention.

The RNC always monitors the location of mobile subscribers in the cell area controlled by the RNC. The RNC detects a case where the subscriber enters a predetermined area and sends a location report message to the MSC / SGSN. The mobile communication management system or the administrator checks the location information of the area where the disaster occurred and controls the location information database of all RNCs that control the communication area of the area. ) When the subscriber enters the area, set the location report message LOCATION REPORT to MSC / SGSN.

Location Report (LOCATION REPORT) is a message defined in RANA (Radio Access Network Application Part), an interface protocol between 3GPP RNC and MSC / SGSN.Location Services (Location Services, hereinafter LCS) Message).

3GPP standard of LOCATION REPORT is shown in <Table 1> below.

TABLE 1

In the present invention, when the RNC sends a location report message (LOCATION REPORT) to the MSC / SGSN, the cause value of the message field is set to "User Restriction Start Indication" and the service area identifier (SAI), which is the subscriber's current location information. Attach and transmit the information. SAI is an identifier for identifying the service area defined in the WCDMA system. The Mobile Country Code (MCC), Mobile Network Code (MNC), Location Area Code (LAC), and Service Area Code (Service Area Code, SAC).

Accordingly, the MSC / SGSN receives a subscriber location report message (LOCATION REPORT) from the RNC (S100), and checks whether a disaster message transmission request is included in the location report message (LOCATION REPORT) (S110). That is, the MSC / SGSN determines whether or not to transmit a disaster message by checking whether the cause value of the location report message is set to “User Restriction Start Indication”.

The MSC / SGSN extracts the SAI which is the service area code of the RNC from the LOCATION REPORT message (S112), and reads the disaster message corresponding to the service area code from the emergency message database (S114). Here, the emergency message database stores the SAI of the disaster area input by the mobile communication management system or the administrator and a guide message according to the disaster situation of the corresponding area.

The data structure of such an emergency message database is shown in Table 2 below.

TABLE 2

As shown in Table 2, the emergency message database includes a mobile country code (MCC), a mobile network code (MCC), a location area code (LAC), and a service area code (LAC). SAI information consisting of Service Area Code (SAC) and disaster message according to the disaster situation of the area are saved.

Operator commands are required to store and manage this information. For example, if the SAI information of the area where a large fire occurred is MCC = 450, MNC = 005, LAC = 82, SAC = 7, the command REG-EMG-MSG (Register Emergency Message) indicates [450,005,82, 7, OOO may cause damage due to large fire. Please note.] You can register information in the emergency message database. In addition, when the disaster situation is released, a function of deleting information previously registered in the system may be provided through a DEL-EMG-MSG (Delete Emergency Message) command.

The MSC / SGSN transmits the corresponding disaster message to the subscriber (S116). When the MSC sends the disaster message, the Unstructured Supplementary Services Data (USSD) service is available, and the SGSN sends the short message when the disaster message is transmitted. Service) can be used. Here, USSD is a technology for transmitting information or a specific command from the GSM network, which is similar in that it uses a signaling channel like the SMS service, but unlike the SMS service, the USSD is not a method of storing and transmitting a message. The message is transmitted by setting and releasing a communication path. Therefore, there is an advantage that it can send a disaster message faster than the SMS and can be used in all terminals, but SGSN does not support the USSD service, so SGSN transmits a disaster message using SMS.

The disaster message providing method according to the present invention will be described in detail for each situation with reference to FIGS. 3 to 5.

3 is a signal flow diagram for providing a disaster message according to a first embodiment of the present invention, which illustrates a case where a disaster message is provided to a subscriber receiving a voice call service through an MSC.

The calling mobile communication terminal 11 and the receiving mobile communication terminal 17 establish a call through a signaling channel set by the corresponding MSCs 13 and 15 to perform a voice call (S1).

Thus, when the subscriber of the calling mobile communication terminal 11 moves to the disaster occurrence area, the RNC 19 serving the corresponding area transmits a LOCATION REPORT message to the calling MSC 13 (S3). At this time, the RNC 19 sets the cause value of the LOCATION REPORT message to "User Restriction Start Indication" and attaches the SAI of the calling mobile communication terminal 11 to send to the calling MSC 13. .

Receiving the LOCATION REPORT message, the originating MSC 13 checks the cause value of the message and checks whether the SAI information is included again if "User Restriction Start Indication" is set. If the SAI is confirmed, the registered message is read by searching the identified SAI information in the disaster message database (S5).

The originating MSC 13 attaches the read disaster message to the "REGISTER" message indicating the start of the USSD service and sends it to the calling mobile communication terminal 11 through the signaling channel which received the LOCATION REPORT message. Transmit (S7). Accordingly, the calling mobile terminal 11 warns the subscriber of the danger by displaying a disaster message attached to the REGISTER message to the subscriber. After the message is displayed, the calling mobile terminal 11 transmits a response message (FACILITY) to the calling MSC 13, and the receiving MSC 13 receiving the message sends a "RELEASE COMPLETE" signal for terminating the USSD service. By transmitting to the mobile communication terminal 11, the disaster message transmission through the USSD service is completed (S9). Here, when the originating MSC 13 does not receive a response message FACILITY, retransmission within the designated range is also possible.

4 is a signal flow diagram for providing a disaster message according to a second embodiment of the present invention, which illustrates a case where a disaster message is provided to a subscriber receiving data service through SGSN.

The mobile communication terminal 21 establishes a session through the SGSN 23 and the GGSN 25 to perform data communication (S11). Here, when the subscriber of the mobile communication terminal 21 moves to the disaster occurrence area, the RNC 29 serving the area transmits a LOCATION REPORT message to the SGSN 23 (S13). At this time, the RNC 29 sets the cause value of the LOCATION REPORT message to "User Restriction Start Indication" and attaches the SAI of the mobile communication terminal 21 to the SGSN 23.

Upon receipt of the LOCATION REPORT message, the SGSN 23 checks the cause value of the message and checks whether the SAI information is included again if "User Restriction Start Indication" is set. If the SAI is confirmed, the registered message is read by searching the identified SAI information in the disaster message database (S15).

The SGSN 23 sends the read disaster message to the mobile communication terminal 21 by attaching the read disaster message to the "CP-DATA" message for the SMS service and sends a response signal for receiving the "CP-DATA" message from the mobile communication terminal 21. When the "CP-ACK" is received, the data is transmitted so that the disaster message is displayed on the mobile communication terminal 21. If the " CP-DATA " message from the mobile communication terminal 21 is a normal response, the SGSN 23 sends a " CP-ACK " message to the mobile communication terminal 21 to terminate the SMS, thereby causing a disaster through the SMS. The message transmission is complete. Here, when the SGSN 23 does not receive the "CP-DATA" message from the mobile communication terminal 21, it is also possible to resend the disaster message.

5 is a signal flow diagram for providing a disaster message according to a third embodiment of the present invention, a location reporting function (Location Update, Attach, Routing Area Update) performed by the subscriber to inform the MSC / SGSN of the changed location information while moving. The following is an example of providing an emergency message.

A radio resource control (RRC) connection is established between the mobile communication terminal 31 and the mobile communication network in order to exchange control information for system resource management (S21). The RRC connection is generally established when power is supplied to the mobile communication terminal 31 to exchange control information.

The mobile communication terminal 31 requests the location information update (Location Update, Attach, Routing Area Update) to the RNC 39 (S23), whereby the RNC 39 and the MSC / SGSN 33 are connected to a signaling channel ( In particular, a location update, attach, and routing area update request is processed through lu signaling connection (S25).

Here, the MSC / SGSN 33 extracts the location information from the information reported by the mobile communication terminal 31 (S27), and checks whether there is a disaster message registered in the location information notified by the subscriber (S29).

If there is a registered disaster message, the MSC / SGSN 33 transmits the corresponding disaster message to the mobile communication terminal 31 (S31). In this case, the MSC may use the USSD service to transmit the disaster message, and use the SMS to transmit the disaster message in the SGSN.

Upon completion of the disaster message transmission, the MSC / SGSN 33 requests the RNC 39 to release the signaling channel (Iu signaling connection) (S33), whereby the RNC 39 connects the RRC with the mobile communication terminal 31. After the release (S35), by reporting the completion (S39), the disaster message providing process is completed.

As described above, the present invention is based on the basic voice and data service procedures provided by the WCDMA system, and configures an emergency message database in the MSC / SGSN to register and delete a disaster message in the emergency message database, while also providing mobile communication. If a subscriber of the service enters a disaster area where a traffic accident, crime, fire, natural disaster, etc. occurred while moving, MSC / SGSN delivers the disaster message stored in the emergency message database to the subscriber.

As described above, the embodiment according to the present invention is not limited to the above, and various modifications can be made within the scope apparent to those skilled in the art in connection with the present invention.

As described above, the disaster message providing method of the mobile communication system of the present invention stores the disaster occurrence area information and the corresponding disaster message in the MSC / SGSN, and when the subscriber of the mobile communication service enters the corresponding area, the MSC / SGSN is sending the disaster message stored in the emergency message database to the subscriber.

Accordingly, by notifying the fact of the disaster in the area in accordance with the movement of the subscriber can be prevented in advance the risk situation or inconvenience that can occur to the subscriber to enter the area where the disaster occurred.

Claims (7)

Constructing a database by storing a local identifier of a region where a disaster has occurred and a disaster message accordingly; Receiving the current location information of the mobile communication terminal; Searching for the disaster message corresponding to the current location information of the mobile communication terminal; And transmitting the retrieved disaster message to the mobile communication terminal. The method of claim 1, The step of constructing a database by storing in advance the local identifier of the region where the disaster occurred and the disaster message accordingly, Mobile Country Code (MCC), Mobile Network Code (MCC), Location Area Code (LAC), Service Area Code (SAC) And storing a disaster message corresponding to a service area identifier (SAI) configured in the database. The method of claim 1, Receiving the current location information of the mobile communication terminal, Detecting an entry of the mobile communication terminal by a base station controller of a service area where the mobile communication terminal has entered; The base station controller attaches a disaster message transmission request to the mobile communication terminal and service area identifier (SAI) information which is current location information of the mobile communication terminal, and attaches a location report message according to 3GPP standard (LOCATION). REPORT); And receiving the location report message generated by the base station controller. The method of claim 3, wherein Generating the location report message (LOCATION REPORT) in the base station controller, Setting a disaster message transmission for the mobile communication terminal in a field of the location report message; And attaching service area identifier (SAI) information, which is current location information of the mobile communication terminal, to the disaster message providing method of the mobile communication system. The method of claim 4, wherein Searching for the disaster message corresponding to the current location information of the mobile communication terminal, Checking whether a disaster message transmission for the mobile communication terminal is set in a field of the location report message transmitted by the base station controller; Checking the service area identifier when the disaster message transmission is set; And searching for the disaster message corresponding to the service area identifier. The method of claim 1, The transmitting of the retrieved disaster message to the mobile communication terminal, Disaster message providing method of the mobile communication system, characterized in that for transmitting the disaster message in the USSD (Unstructured Supplementary Services Data) message format. The method of claim 1, The transmitting of the retrieved disaster message to the mobile communication terminal, Disaster message providing method of the mobile communication system, characterized in that for transmitting the disaster message in the form of a Short Message Service (SMS) message.

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