KR102490113B1 - Apparatus and Method for broadcasting disaster - Google Patents

Abstract

The present invention relates to a disaster broadcasting system and method, and a disaster broadcasting apparatus for broadcasting local disaster information in a narrow warning area in a cell broadcasting service transmission method according to the present invention includes CBS (Cell Broadcast Service) information from a cell broadcasting company. Receiving module for receiving; a control module for selecting a mobility management device and a base station to transmit the local disaster information based on the received CBS information and generating local disaster information corresponding to a warning area of a consultation; and a transmission module for transmitting the generated local disaster information to a terminal through the selected mobility management device and base station.

Description

Disaster broadcasting apparatus and method {Apparatus and Method for broadcasting disaster}

The present invention relates to transmission of a disaster or safety message in an LTE system, and more specifically, to a disaster broadcasting apparatus and method for transmitting a disaster or safety message to a user terminal through a cell broadcasting service (CBS). it's about

Cell Broadcasting Service (CBS) is a technology that transmits the same information to all terminals at the same time for a specific area or the entire mobile communication network. Include information (hereinafter referred to as disaster and disaster information).

On the other hand, the conventional cell broadcasting service (CBS) can only transmit disaster information only to all terminals located in the area by designating the whole country, city, or province in the administrative area, and can only transmit disaster information in a narrower part of a limited area or a specific group. It was not possible to transmit separate disaster information to a terminal belonging to . For example, when an earthquake occurs throughout Pohang, disaster safety messages containing information on the fact of an earthquake, the time of an earthquake, and the strength of an earthquake are sent nationwide or sent to the Pohang area by a central government agency such as the Ministry of Public Administration and Security. It can only be transmitted throughout, and even if some of the buildings of some companies are in danger of collapsing due to an earthquake, the company sends a text message containing separate disaster information about the possibility of collapse of the building and how to prevent damage for the safety of its employees. It could not be transmitted to workers in the building. This led to the point that measures regarding those who were able to evacuate in advance were insufficient.

Therefore, when the degree of damage is serious in some specific area due to various disasters as well as natural disasters such as earthquakes, landslides, floods, etc., additional warnings or There is a demand for a method for transmitting separate information on evacuation methods, measures, and the like.

Korean Patent Registration Publication No. 10-09124054, "Method and system for providing location information using cell broadcasting service"

The present invention has been proposed to solve the above problems, and in the event of various disasters, by specifying a cell corresponding to a severely damaged area or by specifying an arbitrary terminal within a cell area, additional warning or evacuation An object of the present invention is to provide a disaster broadcasting device and method capable of transmitting local disaster information regarding methods and measures in a cell broadcasting service (CBS) method.

In addition, an object of the present invention is to provide a disaster broadcasting apparatus and method for effectively transmitting disaster information by preventing collision between transmission of central disaster information and transmission of local disaster information.

According to one aspect, a disaster broadcasting apparatus for broadcasting local disaster information in a narrowly warned area by a cell broadcasting service transmission method includes a receiving module for receiving CBS (Cell Broadcast Service) information from a cell broadcasting company; a control module for selecting a mobility management device and a base station to transmit the local disaster information based on the received CBS information and generating local disaster information corresponding to a warning area of a consultation; and a transmission module for transmitting the generated local disaster information to a terminal through the selected mobility management device and base station.

The CBS information may include at least one of warning type, warning content, number of repeated transmissions, warning area, priority, warning message reception group, and disaster manager information.

The control module distinguishes between central disaster and disaster information and local disaster and disaster information based on the warning type and information on the warning content, and transmits local disaster and disaster information based on the information on the warning area. A mobility management device and a base station You can choose.

The control module may set a back-off time for transmitting a second priority broadcast after a certain period of time between broadcasting of the central disaster information and broadcasting of the local disaster information based on the information of the priority. .

The local disaster information includes at least one of the identification information of the selected base station, the back-off time, the warning type, the warning content, the number of repeated transmissions, the warning area, the priority, the warning message receiving group, and the disaster manager information. can include

Disaster broadcasting system for broadcasting local disaster and disaster information in a warning area of consultation according to another aspect in a cell broadcasting service transmission method transmits the local disaster and disaster information based on CBS (Cell Broadcast Service) information received from a cell broadcasting company. a CBS center that selects a mobility management device and a base station to generate local disaster and disaster information corresponding to a warning area of consultation; a mobility management device receiving the local disaster information from the CBS center and transmitting the local disaster information to the selected base station; and a base station broadcasting the local disaster information in a cell broadcasting service transmission method.

The CBS information may include at least one of warning type, warning content, number of repeated transmissions, warning area, priority, warning message reception group, and disaster manager information.

The CBS center may distinguish between central disaster information and local disaster information based on the warning type and warning content information, and select the mobility management device and the base station based on the warning area information.

The CBS center may set a back-off time for transmitting the broadcast of the central disaster information and the broadcast of the local disaster information after taking a break for a certain period of time based on the information of the priority. .

The local disaster information includes at least one of the identification information of the selected base station, the back-off time, the warning type, the warning content, the number of repeated transmissions, the warning area, the priority, the warning message receiving group, and the disaster manager information. can include

The base station may generate a system information block including the local disaster information and transmit the generated system information block to broadcast the local disaster information.

The base station may generate a system information block including the local disaster information and broadcast the local disaster information by transmitting the generated system information block to user terminals corresponding to the warning message reception group.

The base station compares transmission times of the system information block including the central disaster information and the system information block including the local disaster information, and a system information block having a lower priority according to the priority order has the backoff time It can be controlled to be sent after elapsed.

According to another aspect, a disaster broadcasting method for broadcasting local disaster information in a narrow warning area by a cell broadcasting service transmission method includes the steps of a CBS center receiving CBS (Cell Broadcast Service) information from a cell broadcasting company; selecting, by a CBS center, a mobility management device and a base station to transmit the local disaster information based on the received CBS information, and generating local disaster information corresponding to a narrowed warning area; and transmitting, by the CBS center, the local disaster information to the selected mobility management device.

The CBS information may include at least one of warning type, warning content, number of repeated transmissions, warning area, priority, warning message reception group, and disaster manager information.

In the step of generating the local disaster and disaster information, the CBS center distinguishes between central disaster and disaster information and local disaster and disaster information based on the information of the warning type and the warning content, and local disaster and disaster information based on the information of the warning area. A mobility management device and a base station to transmit text messages may be selected.

The step of generating the local disaster information is a backoff in which the CBS center transmits the broadcast of the central disaster information and the broadcast of the local disaster information after taking a break for a predetermined time based on the information of the priority ( back-off time can be set.

The local disaster information includes at least one of the identification information of the selected base station, the back-off time, the warning type, the warning content, the number of repeated transmissions, the warning area, the priority, the warning message receiving group, and the disaster manager information. can include

transmitting, by a mobility management device, the local disaster information received from the CBS center to the selected base station; and broadcasting, by a base station, the local disaster information received through a cell broadcasting service transmission method.

The broadcasting may include generating, by a base station, a system information block including the local disaster information; and transmitting, by the base station, the generated system information block. ,

In the transmitting of the system information block, the base station may broadcast the local disaster information by transmitting the generated system information block to user terminals corresponding to the warning message reception group.

In the step of transmitting the system information block, the base station compares the transmission time of the system information block including the central disaster information and the system information block including the local disaster information, and the system of the next priority according to the priority. The information block may be controlled to be transmitted after the backoff time has elapsed.

According to an embodiment, the spread of human casualties and property damage can be prevented by transmitting additional warnings, evacuation methods, and local disaster information about measures to people located in areas where the degree of damage is severe due to various disasters.

1 is a diagram for explaining an embodiment in which local disaster information is broadcasted through a cell broadcasting service (CBS) when severe damage occurs in some areas due to a disaster.
2 is a block diagram illustrating an emergency broadcasting system according to an exemplary embodiment.
FIG. 3 is a block diagram illustrating the functions of the CBS center of FIG. 2;
4 is a flowchart illustrating an emergency broadcasting method according to another embodiment.

Hereinafter, embodiments of the present invention will be described in more detail with reference to the accompanying drawings. Embodiments of the present invention may be modified in various forms, and the scope of the present invention should not be construed as being limited to the following examples. This embodiment is provided to more completely explain the present invention to those skilled in the art. In addition, although specific terms have been used in the drawings and specifications of the present invention, they are only used for the purpose of describing the present invention, and are not used to limit the scope of the present invention described in the meaning or claims. Therefore, those of ordinary skill in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical scope of protection of the present invention should be determined by the technical spirit of the appended claims.

Meanwhile, in this specification, singular forms also include plural forms unless otherwise specified in the text. As used herein, “comprises” and/or “comprising” means the presence of one or more other components, steps, operations, and/or elements in the stated component, step, operation, and/or element. or adding

Also, depending on the network type, other well-known terms such as “base station (BS)” or “access point (AP)” may be used instead of “base station (eNodeB)” or “base station (eNB)”. For convenience, the terms “eNodeB” and “eNB” are used herein to refer to a network infrastructure component that provides wireless access to remote terminals. Also, depending on the type of network, well-known terms such as "mobile station", "subscriber station", "remote terminal", "wireless terminal", "mobile terminal" or "user device" instead of "user terminal" or "UE" Other terms may be used For convenience, the terms "user terminal" and "UE" herein refer to whether a UE (such as a mobile phone or smart phone) is a mobile device or generally a stationary device such as a desktop computer or vending machine. Used to refer to a remote radio that wirelessly accesses a base station (eNB).

Then, the disaster broadcasting apparatus and method of the present invention will be described in detail with reference to the drawings.

1 is a diagram for explaining an embodiment in which local disaster information is broadcasted through a cell broadcasting service (CBS) when severe damage occurs in some areas due to a disaster. Referring to Figure 1, for example, if an earthquake occurs throughout a certain region (ex, Pohang), the building (A) of the company located in the region is built with an earthquake-resistant design and has a low risk of collapse, and the interior of the factory (B) It is assumed that the blast furnace installed in has a risk of collapse, and that in case of collapse, the molten metal flows and is exposed to the risk to the adjacent land (C).

The central government (ex, Ministry of Public Administration and Security) is located in an earthquake-prone area by transmitting central disaster information, including information on the fact of an earthquake, the time of an earthquake, and the strength of an earthquake, through Cell Broadcasting Service (CBS) transmission method. It can be broadcast to all terminals located in the entire earthquake-prone area (ex, Pohang), including the building (A), factory (B), and site (C) of the company.

Enterprises, for example, provide local disaster information, including information on the risk of collapse of a blast furnace and safe evacuation routes inside the factory (B), in addition to the central disaster text, through a base station (40_b) located inside the factory (B). It is possible to broadcast through the Cell Broadcasting Service (CBS) transmission method. In addition, the enterprise provides local disaster information including information on the risk of collapse of the furnace inside the factory (B) and the building (A) as a safe shelter through a cell broadcasting service (40_c) located on the site (C). CBS) transmission method.

The company, for example, provides local disaster and disaster information, including information on response guidelines for minimizing damage in the event of a furnace collapse and how to lead field employees, through a base station 40_b located inside the factory (B). ) can be broadcast to an administrator terminal (ex, UE3) in a cell broadcasting service (CBS) transmission method. In addition, the enterprise provides local disaster information, including information on the shortest safe route from the site (C) to the building (A) and information on how to lead field staff in the site (C) to a base station located on the site (C). Through (40_c), it is possible to broadcast to the manager terminal (ex, UE5) of the site (C) by using a cell broadcasting service (CBS) transmission method. Specific contents capable of realizing the above will be described in detail with reference to FIGS. 2 and 3 below.

2 is a block diagram illustrating a disaster broadcasting system according to an embodiment, and FIG. 3 is a block diagram illustrating functions of the CBS center of FIG. 2 .

Referring to FIG. 2, the disaster broadcasting system includes a Cell Broadcast Entity (CBE) 10, a Cell Broadcast Service Center (CBC) 20, a Mobility Management Entity (MME) 30, and a base station. (eNB) 40, and a user equipment (UE) 50.

A cell broadcasting enterprise (CBE) 10 requests broadcasting of local disaster information while providing CBS information to a CBS center (CBC) 20 . For example, the cell broadcasting enterprise (CBE) 10 includes a device, a server, etc. requesting broadcasting of local disaster information, and includes a plurality of cell broadcasting enterprises (CBEs) corresponding to various companies, government agencies, and government-affiliated organizations. ) (10: 1, 2, ..., N). Apart from the central disaster information broadcasted to the warning area in a broad sense requested by the government agency to the CBS Center (CBC) 20, the local disaster information is provided by the cell broadcasting company (CBE) 10 to the CBS Center (CBC) ( 20) is requested and broadcasted to the warning area of the agreement.

here. The CBS information may include information such as warning type, warning content, number of repeated transmissions, warning area, priority, warning message receiving group, disaster manager, and the like. Warning areas are not only warning areas in a broad sense such as cities, provinces, and counties, but also narrower areas such as dong, eup, and myeon, and buildings and facilities located in specific areas (ex, subway, city hall, gu office, etc.) Warning areas of the same agreement may also be included. The priority may include information about the priority of broadcasting when broadcasting of central disaster information and broadcasting of local disaster information overlap. The warning message receiving group is capable of receiving local disaster information among a plurality of user equipments (UEs) (50: 1, 2, ..., N) located within a cell radius of an arbitrary base station (eNB) 40. It may include identification information (eg, IMEI, IMSI, MSISDN) about arbitrary user equipments (UEs) 50. The disaster manager may include identification information of a manager who manages broadcasting of local disaster information of the cell broadcasting company (CBE) 10 .

The CBS center (CBC) 20 may generate local disaster information by analyzing the received CBS information, and select the MME 30 and the base station (eNB) 40 to transmit the local disaster information. Here, the broadcast form of local disaster information is not limited to text messages such as SMS messages or MMS messages, and may include various broadcast forms such as voice or visual images.

The CBS Center (CBC) 20 may include a memory, a memory controller, one or more processors (CPUs), a peripheral interface, an input/output (I/O) subsystem, a display device, an input device, and communication circuitry. The memory may include high-speed random access memory, and may also include one or more magnetic disk storage devices, non-volatile memory such as flash memory devices, or other non-volatile semiconductor memory devices. Access to memory by the processor and other components, such as peripheral interfaces, may be controlled by the memory controller. The memory may store various types of information and program instructions, and the program is executed by a processor.

The peripheral interface connects the input/output peripherals of the CBS center (CBC) 20 with the processor and memory. One or more processors execute various software programs and/or sets of instructions stored in memory to perform various functions for the CBS Center (CBC) 20 and process data. The I/O subsystem provides an interface between peripheral interfaces and input/output peripherals such as display devices and input devices. The display device may use liquid crystal display (LCD) technology or light emitting polymer display (LPD) technology.

A processor is a processor configured to perform operations associated with CBS Center (CBC) 20 and to execute instructions, for example, using instructions retrieved from memory, to input and output between components of CBS Center (CBC) 20. You can control the reception and manipulation of data. The communication circuit performs communication through an external port or communication by an RF signal. The communication circuitry converts electrical signals to RF signals and vice versa, and communicates with the communication network, other mobile gateway devices, and communication devices via the RF signals.

Referring to FIG. 3 , the CBS Center (CBC) 20 may include a receiving module 21, a transmitting module 23, and a control module 25. These components may be implemented as software, stored in a memory, and executed by a processor, or may be implemented as a combination of software and hardware.

The receiving module 31 may receive CBS information from a cell broadcasting company (CBE) 10 and may receive data or control signals transmitted from various network entities such as the MME 30 .

The transmission module 33 may transmit data or control signals to various network entities such as the MME 30, and may transmit, for example, local disaster information generated by the control module 25.

The control module 25 controls overall functions of the CBS center (CBC) 20, and the MME 30 and the base station (eNB) 40 based on the CBS information received from the cell broadcasting company (CBE) 10. ) can be selected and local disaster information corresponding to the warning area of the consultation can be created.

For example, the control module 25 first distinguishes between central disaster information and local disaster information from warning type and warning content information included in CBS information. In the case of local disaster information as a result of discrimination, the control module 25 selects the MME 30 and eNB 40 located in the corresponding warning area from information on the warning area. In addition, the control module 25, when requested to broadcast the central disaster and disaster information and the local disaster and disaster information at the same time based on the priority information, back-off (back- off) time can be set to prevent information loss due to overlapping broadcasting.

The control module 25 provides information on the identification information of the selected base station (eNB) 40, back-off time, warning type, warning content, repeated transmission count, warning area, warning message reception group, disaster manager, etc. (hereinafter, local disaster information) is transmitted to the MME 30 through the transmission module 33. Table 1 below is an example of a structure of a write-replace warning request message including local disaster information.

[Table 1]

Referring to Table 1, the write-replace warning request message includes a company identification field indicating that the message is information related to a local disaster, a warning area, and a region / Cell identification field, contact/group designation field containing information on designation of disaster officer and warning message receiving group, contact/group deletion field containing information on deletion of disaster officer and warning message receiving group, priority and back An off-time field and a repeated transmission count field of local disaster information may be included. Also, the write-replacement warning request message may further include an additional information field including other notification information.

The CBS Center (CBC) 20 may further include a database (DB) 21. The database (DB) 21 is not limited to a storage device managed by the CBS center (CBC) 20, and may include a storage device capable of managing information by requesting an external storage center. For example, the CBS Center (CBC) 20 maps identification information of each manager who manages broadcasting of local disaster information in a plurality of cell broadcasting companies (CBEs) (10:1, 2, ..., N). It is possible to manage information about a plurality of cell broadcasting companies (CBEs) (10: 1, 2, ..., N) by storing and updating in the database (DB) 21. In addition, the CBS Center (CBC) 20 may store and manage information on broadcast success or broadcast failure of local disaster information in a database (DB) 21.

The MME 30 is a network equipment that performs a mobility management role. When receiving the write-replace warning request message, the MME 30 transmits a write-replace warning response message to the CBS Center (CBC) 20 . The write-replace warning response message is an abbreviated form of the write-replace warning request message and may include a reason field (cause) containing information on transmission success or transmission failure and an additional information field (criticality diagnostics) containing additional information. there is. At this time, upon receiving the write-replace warning response message, the CBS Center (CBC) 20 informs the Cell Broadcasting Company (CBE) 10 that the disaster information information has started to be transmitted based on the information of the disaster manager. can transmit

The MME 30 transmits a write-replace warning request message to the eNB 40 corresponding to the identification information of the eNB 40 stored in the region/cell identification field. For example, referring to FIG. 1 , the MME 30 sends a write-replacement warning request message including information about the risk of collapse of the blast furnace and a safe evacuation route inside the factory (B) in the additional information field to the factory (B). It can be transmitted to the base station 40_b located inside. In addition, the MME 30 sends a write-replacement warning request message including information about the risk of collapse of the blast furnace inside the factory B and the building A as a safe shelter in the additional information field to the base station located on the site C. It can be transmitted to (40_c).

When the base station (eNB) 40 receives the write-replace warning request message, it generates a system information block (SIB) including local disaster information and transmits the user terminal (UE) 50 through the common channel. can be sent to For example, the base station (eNB) 40 has a system information block (SIB) including field information as shown in Table 1 and other notification information (ex, damage situation in a specific area, evacuation plan, etc.) in the additional information field. can create

Among LTE technologies, system information (SI) is essential information for communication between a user terminal (UE) 50 and a base station (eNB) 40, and includes a master information block (MIB) and a system information block. (SIB). The master information block (MIB) is the most essential information and is transmitted through a dedicated channel called PBCH (Physical Broadcast Channel). (Physical Downlink Control Channel). Table 2 below is an example of the transmission period of the master information block (MIB) and the system information block (SIB), and Table 3 shows the first system information block (SIB_1) to the 13th system information block (SIB) of the system information block (SIB). This is an example to explain up to SIB_13).

[Table 2]

Referring to Table 2, the master information block (MIB) is generated every four frames (40 ms) and the frame (10 ms) is repeatedly transmitted, and the first system information block (SIB_1) is generated by eight frames (80 ms). Two frames (20 ms) are repeatedly transmitted. The transmission period of other system information blocks (SIBs) may vary according to system implementation or configuration.

[Table 3]

Referring to Table 3, Korea transmits the central disaster disaster text through the twelfth system information block (SIB_12). The base station (eNB) 40 generates a twelfth system information block (SIB_12) including the field information shown in Table 1 and transmits it to the user equipment (UE) 50 through a common channel to provide local disaster information. can broadcast. In addition, the base station (eNB) 40 generates a separate system information block (SIB_XX) including the field information shown in Table 1, rather than the system information block (SIB) defined in Table 3, so that the user equipment (UE) (50) to broadcast local disaster information.

For example, referring to FIG. 1, when the information of the warning message reception group is not included in the person in charge/group designation field, the base station 40_b located inside the factory B, the field information and In the additional information field, a system information block (SIB) including other notification information about the risk of collapse of the blast furnace and a safe evacuation route inside the factory (B) may be generated and transmitted. At this time, all terminals located in the cell (cell), that is, the third user terminal (UE_3) 50 and the fourth user terminal (UE_4) 50 may receive the transmitted system information block (SIB). . In addition, the base station (40_c) located on the site (C), in the field information and additional information fields as shown in Table 1, the risk of collapse of the furnace inside the factory (B) and other notification information about the building (A) as a safe shelter A system information block (SIB) including a may be generated and transmitted. At this time, all of the plurality of user terminals (UE_5, 6, ..., N) located in the corresponding cell can receive the transmitted system information block (SIB).

For another example, referring to FIG. 1 , when information of a warning message receiving group is included in the person in charge/group designation field, the base station 40_b, in the field information and additional information field as shown in Table 1, when furnace collapses Create a system information block (SIB) including response instructions for minimizing damage and other notification information on how to lead field staff, etc., and only use the third user terminal (UE_3) 50 corresponding to the identification information of the warning message reception group. A system information block (SIB) may be transmitted. Here, the third user terminal (UE_3) 50 may correspond to a manager terminal of the factory (B). In addition, the base station 40_c generates a system information block (SIB) including field information and additional information fields as shown in Table 1 above and other notification information about how to lead field staff in the site C, etc. The system information block (SIB) can be transmitted only to the fifth user terminal (UE_5) 50 corresponding to the identification information (eg, IMEI, etc.) of the warning message reception group stored in the group designation field. Here, the fifth user terminal (UE_5) 50 may correspond to the site manager terminal of the land (C).

The base station (eNB) 40, when both broadcasting of central disaster information and local disaster information are requested, a system information block (SIB) including central disaster information and a system including local disaster information The transmission time of the information block (SIB) can be compared. If both transmission times are the same, the base station (eNB) 40 checks the priority information and the back-off time, and controls the system information block of the lower priority to be transmitted after the back-off time has elapsed, thereby overlapping broadcasting. information loss can be prevented.

The base station (eNB) 40 transmits the system information block (SIB) to the user terminal (UE) 50, and then checks whether the local catastrophe text has been successfully broadcasted or broadcasted unsuccessfully, and sends broadcasting success or broadcasting failure information. Sends a write-replace warning response message containing the MME (30). At this time, the MME 30 transmits broadcast success or broadcast failure information to the CBS Center (CBC) 20, and the CBS Center (CBC) 20 transmits information on broadcast success or air defense failure of the local disaster disaster character. It can be managed by storing in the database (DB) 21.

When the user terminal (UE) 50 receives the system information block (SIB) from the base station (eNB) 40, it may provide the user with local disaster information included in the system information block (SIB) in the form of text. . For example, the user equipment (UE) 50 may check whether the central disaster text message and the local disaster text message are repeatedly received and whether or not they are independently received according to priority. When the duplicate reception is confirmed, the user equipment (UE) 50 may return to the base station (eNB) 40 the fact of duplicate reception or the fact that independent reception has not been performed.

4 is a flowchart illustrating an emergency broadcasting method according to another embodiment. Referring to FIG. 4 , the CBS Center (CBC) 20 receives CBS (Cell Broadcast Service) information from the Cell Broadcasting Company (CBE) 10 (S401).

here. The CBS information may include information such as warning type, warning content, number of repeated transmissions, warning area, priority, warning message receiving group, disaster manager, and the like. Warning areas are not only warning areas in a broad sense such as cities, provinces, and counties, but also narrower areas such as dong, eup, and myeon, and buildings and facilities located in specific areas (ex, subway, city hall, gu office, etc.) Warning areas of the same agreement may also be included. The priority may include information about the priority of broadcasting when broadcasting of central disaster information and broadcasting of local disaster information overlap. The warning message receiving group is capable of receiving local disaster information among a plurality of user equipments (UEs) (50: 1, 2, ..., N) located within a cell radius of an arbitrary base station (eNB) 40. It may include identification information (eg, IMEI, IMSI, MSISDN) about arbitrary user equipments (UEs) 50. The disaster manager may include identification information of a manager who manages broadcasting of local disaster information of the cell broadcasting company (CBE) 10 .

Next, the CBS center (CBC) 20 may generate local disaster information by analyzing the received CBS information (S402). For example, the CBS center (CBC) 20 first distinguishes central disaster information and local disaster information from warning type and warning content information included in CBS information. If the discrimination result is local disaster information, the CBS center (CBC) 20 selects the MME 30 and the base station (eNB) 40 located in the corresponding warning area from the warning area information. In addition, the CBS center (CBC) 20, when requested to broadcast the central disaster information and the local disaster information at the same time based on the priority information, the back-off for transmitting the lower priority broadcast after a certain period of time off (back-off) time can be set. Thereafter, the CBS center (CBC) 20 determines identification information of the selected base station (eNB) 40, back-off time, warning type, warning content, number of repeated transmissions, warning area, warning message reception group, disaster manager, etc. It is possible to generate local disaster information including disasters.

Next, the CBS center (CBC) 20 transmits a write-replace warning request message including local disaster information to the MME 30 (S403). A write-replace warning request message may be configured as shown in Table 1 above.

Next, the MME 30 receiving the write-replace warning request message may transmit a write-replace warning response message to the CBS center (CBC) 20 (S404). The write-replace warning response message is an abbreviated form of the write-replace warning request message and may include a reason field (cause) containing information on transmission success or transmission failure and an additional information field (criticality diagnostics) containing additional information. there is. Next, upon receiving the write-replace warning response message, the CBS center (CBC) 20 determines that the disaster information information has started to be transmitted to the cell broadcasting company (CBE) 10 based on the information of the disaster manager. It can be transmitted to (S405).

Next, the MME 30 checks the local disaster information and transfers the CBS center (CBC) 20 to the base station (eNB) 40 corresponding to the identification information of the eNB 40 stored in the area/cell identification field. ) and transmits the write-replace warning request message received from (S406).

For example, referring to FIG. 1 , the MME 30 sends a write-replacement warning request message including information about the risk of collapse of the blast furnace and a safe evacuation route inside the factory (B) in the additional information field to the factory (B). It can be transmitted to the base station 40_b located inside. In addition, the MME 30 sends a write-replacement warning request message including information about the risk of collapse of the blast furnace inside the factory B and the building A as a safe shelter in the additional information field to the base station located on the site C. It can be transmitted to (40_c).

Next, when receiving the write-replace warning request message, the base station (eNB) 40 may generate a system information block (SIB) including local disaster information (S407). For example, the base station (eNB) 40 has a twelfth system information block (including field information as shown in Table 1 and other notification information (ex, damage situation in a specific area, evacuation plan, etc.) in the additional information field ( SIB_12) can be created. For another example, the base station (eNB) 40 may generate a separate system information block (SIB_XX) including the field information shown in Table 1 instead of the system information block (SIB) defined in Table 3 above. there is.

Next, the base station (eNB) 40 may transmit the system information block (SIB) to the user terminal (UE) 50 through a common channel (PDCCH) to broadcast local disaster information (S408).

For example, referring to FIG. 1, when the information of the warning message reception group is not included in the person in charge/group designation field, the base station 40_b located inside the factory B, the field information and In the additional information field, a system information block (SIB) including other notification information about the risk of collapse of the blast furnace and a safe evacuation route inside the factory (B) may be generated and transmitted. At this time, all terminals located in the cell (cell), that is, the third user terminal (UE_3) 50 and the fourth user terminal (UE_4) 50 may receive the transmitted system information block (SIB). . In addition, the base station (40_c) located on the site (C), in the field information and additional information fields as shown in Table 1, the risk of collapse of the furnace inside the factory (B) and other notification information about the building (A) as a safe shelter A system information block (SIB) including a may be generated and transmitted. At this time, all of the plurality of user terminals (UE_5, 6, ..., N) located in the corresponding cell can receive the transmitted system information block (SIB).

For another example, referring to FIG. 1 , when information of a warning message receiving group is included in the person in charge/group designation field, the base station 40_b, in the field information and additional information field as shown in Table 1, when furnace collapses Create a system information block (SIB) including response instructions for minimizing damage and other notification information on how to lead field staff, etc., and only use the third user terminal (UE_3) 50 corresponding to the identification information of the warning message reception group. A system information block (SIB) may be transmitted. Here, the third user terminal (UE_3) 50 may correspond to a manager terminal of the factory (B). In addition, the base station 40_c generates a system information block (SIB) including field information and additional information fields as shown in Table 1 above and other notification information about how to lead field staff in the site C, etc. The system information block (SIB) can be transmitted only to the fifth user terminal (UE_5) 50 corresponding to the identification information (eg, IMEI, etc.) of the warning message reception group stored in the group designation field. Here, the fifth user terminal (UE_5) 50 may correspond to the site manager terminal of the land (C).

For another example, when both broadcasting of central disaster information and local disaster information are requested, the base station (eNB) 40 includes a system information block (SIB) including central disaster information and local disaster information. Transmission times of system information blocks (SIBs) including disaster information may be compared. If both transmission times are the same, the base station (eNB) 40 checks the priority information and the back-off time, and controls the system information block of the lower priority to be transmitted after the back-off time has elapsed, thereby overlapping broadcasting. information loss can be prevented.

Next, after transmitting the system information block (SIB) to the user terminal (UE) 50, whether or not the broadcasting success or broadcasting failure of the local disaster disaster character is confirmed, and a write-replace warning including the broadcasting success or broadcasting failure information A response message may be transmitted to the MME 30 (S409).

Next, the MME 30 transmits broadcast success or broadcast failure information to the CBS Center (CBC) 20 (S410), and the CBS Center (CBC) 20 transmits the broadcast success or air defense of the local disaster disaster character. Information on the failure can be stored and managed in the database (DB) 21 (S311).

While this specification contains many features, such features should not be construed as limiting the scope of the invention or the claims. Also, features described in separate embodiments in this specification may be implemented in combination in a single embodiment. Conversely, various features that are described in this specification in a single embodiment may be implemented in various embodiments individually or in combination as appropriate.

Although actions are described in a particular order in the drawings, it should not be understood that such actions are performed in the specific order as shown, or that the actions are performed in a series of sequential order, or that all described actions are performed to achieve a desired result. . Multitasking and parallel processing can be advantageous in certain circumstances. In addition, it should be understood that the division of various system components in the above-described embodiments does not require such division in all embodiments. The program components and systems described above may generally be implemented as a package in a single software product or multiple software products.

The method of the present invention as described above may be implemented as a program and stored in a recording medium (CD-ROM, RAM, ROM, floppy disk, hard disk, magneto-optical disk, etc.) in a computer-readable form. Since this process can be easily performed by a person skilled in the art to which the present invention belongs, it will not be described in detail.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the technical spirit of the present invention to those skilled in the art to which the present invention belongs, and thus the above-described embodiments and It is not limited by drawings.

10: Cell Broadcasting Company (CBE) 20: CBS Center (CBC)
30 Mobility Management Equipment (MME) 40 Base Station (eNB)
50: user equipment (UE)

Claims (22)

In a disaster broadcasting device for broadcasting local disaster information in a narrow warning area by cell broadcasting service transmission method,
A receiving module for receiving CBS (Cell Broadcast Service) information from a cell broadcasting company;
a control module for selecting a mobility management device and a base station to transmit the local disaster information based on the received CBS information and generating local disaster information corresponding to a warning area of a consultation; and
A transmission module for transmitting the generated local disaster information to a terminal through the selected mobility management device and base station;
The control module,
Set a back-off time for transmitting the broadcast of the central disaster information and the broadcast of the local disaster information after taking a break for a certain period of time,
The central disaster and disaster information is broadcast to a warning area in a broad sense at the request of a government agency,
The local disaster broadcasting device is broadcasted to a warning area of the agreement at the request of the cell broadcasting company. According to claim 1,
The CBS information,
A disaster broadcasting device including at least one information of warning type, warning content, number of repeated transmissions, warning area, priority, warning message receiving group, and disaster manager information. According to claim 2,
The control module,
Distinguishing central disaster information and local disaster information based on the warning type and information on the warning content, and selecting a mobility management device and a base station to transmit local disaster information based on the warning area information disaster broadcasting device. According to claim 3,
Disaster broadcasting apparatus, characterized in that the second priority broadcasting is determined based on the priority information. According to claim 4,
The local disaster disaster information,
Disaster broadcasting apparatus including at least one of the identification information of the selected base station, the back-off time, the warning type, the warning content, the number of repeated transmissions, the warning area, the priority, the warning message reception group, and the disaster manager information. In a disaster broadcasting system for broadcasting local disaster information in a narrow warning area by cell broadcasting service transmission method,
A CBS center that selects a mobility management device and a base station to transmit the local disaster information based on Cell Broadcast Service (CBS) information received from a cell broadcasting company and generates local disaster information corresponding to a narrow warning area;
a mobility management device receiving the local disaster information from the CBS center and transmitting the local disaster information to the selected base station; and
A base station broadcasting the local disaster information in a cell broadcasting service transmission method; includes,
The CBS Center,
Set a back-off time for transmitting the broadcast of the central disaster information and the broadcast of the local disaster information after taking a break for a certain period of time,
The central disaster and disaster information is broadcast to a warning area in a broad sense at the request of a government agency,
The local disaster broadcasting system broadcasts the local disaster information to a warning area of the agreement at the request of the cell broadcasting company. According to claim 6,
The CBS information,
A disaster broadcasting system including at least one information of warning type, warning content, number of repeated transmissions, warning area, priority, warning message reception group, and disaster manager information. According to claim 7,
The CBS Center,
Disaster broadcasting system characterized in that for distinguishing between central disaster information and local disaster information based on the warning type and information on the warning content, and selecting the mobility management device and the base station based on the warning area information. . According to claim 8,
Disaster broadcasting system, characterized in that the next priority broadcasting is determined based on the information of the priority. According to claim 9,
The local disaster disaster information,
Disaster broadcasting system including at least one of the identification information of the selected base station, the back-off time, warning type, warning content, number of repeated transmissions, warning area, priority, warning message reception group, and disaster manager information. According to claim 10,
The base station,
A disaster broadcasting system for generating a system information block including the local disaster information and broadcasting the local disaster information by transmitting the generated system information block. According to claim 11,
The base station,
A disaster broadcasting system for generating a system information block including the local disaster information and broadcasting the local disaster information by transmitting the generated system information block to a user terminal corresponding to the warning message reception group. According to claim 11 or 12,
The base station,
The transmission time of the system information block including the central disaster information and the system information block including the local disaster information is compared, and the system information block of the next priority according to the priority order is after the backoff time has elapsed. A disaster broadcasting system characterized in that it is controlled to be transmitted. In a disaster broadcasting method for broadcasting local disaster information by cell broadcasting service transmission method in a narrow warning area,
Receiving CBS (Cell Broadcast Service) information from a cell broadcasting company by a CBS center;
selecting, by a CBS center, a mobility management device and a base station to transmit the local disaster information based on the received CBS information, and generating local disaster information corresponding to a narrowed warning area; and
Transmitting, by the CBS center, the local disaster information to the selected mobility management device;
The step of generating the local disaster disaster information,
The CBS center sets a back-off time during which the broadcast of the central disaster information and the broadcast of the local disaster information are transmitted after taking a break for a certain period of time,
The central disaster information is broadcasted to a warning area in a broad sense at the request of a government agency,
The disaster broadcasting method of claim 1 , wherein the local disaster information is broadcasted to a warning area of a consultation upon request of the cell broadcasting company. According to claim 14,
The CBS information,
A disaster broadcasting method including at least one information of warning type, warning content, number of repeated transmissions, warning area, priority, warning message receiving group, and disaster manager information. According to claim 15,
The step of generating the local disaster disaster information,
The CBS center distinguishes between central disaster information and local disaster information based on the warning type and information on the warning content, and selects a mobility management device and a base station to transmit a local disaster disaster text message based on the information of the warning area Disaster broadcasting method. According to claim 16,
The disaster broadcasting method in which the second priority broadcasting is determined based on the priority information. According to claim 17,
The local disaster disaster information,
Disaster broadcasting method including at least one of the identification information of the selected base station, the back-off time, warning type, warning content, number of repeated transmissions, warning area, priority, warning message receiving group, and disaster manager information. According to claim 18,
transmitting, by a mobility management device, the local disaster information received from the CBS center to the selected base station; and
and broadcasting, by a base station, the local disaster information received through a cell broadcasting service transmission method. According to claim 19,
The broadcasting step is
generating, by a base station, a system information block including the local disaster information; and
and transmitting, by a base station, the generated system information block. According to claim 20,
The step of sending the system information block,
A disaster broadcasting method in which a base station transmits the generated system information block to user terminals corresponding to the warning message receiving group to broadcast the local disaster information. According to claim 20 or 21,
The step of sending the system information block,
When the base station compares the transmission time of the system information block including the central disaster information and the system information block including the local disaster information, and the system information block of the next priority according to the priority order has elapsed, the backoff time has elapsed. Disaster broadcasting method for controlling to be transmitted later.

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