Emergency information delivering method, radio control apparatus, radio base station and mobile terminal

The present invention relates to an emergency information distribution method, a wireless control device, a wireless base station, and a mobile terminal that distribute emergency information to a mobile terminal using broadcast communication.

The Japan Meteorological Agency plans to start distributing Earthquake Early Warnings (emergency information) to the general public (TV / radio, disaster prevention administrative radio, in-house broadcasting at customer attraction facilities, etc.) from October 1, 2007. It is also expected to deliver Earthquake Early Warnings (emergency information) to mobile terminals.

In addition, each local government also requests the distribution of emergency information to the majority of users in the event of an emergency such as a disaster, and immediately distributes emergency information such as terrorism, warnings, and large-scale accidents to the majority of users. Is required to do.

However, in the current mobile communication system (mail distribution system, etc.), it is impossible to immediately distribute emergency information to the majority of mobile terminals from the viewpoint of wireless resources, and these requirements are satisfied. Requires a broadcast system.

In order to realize such a broadcasting system, CBS (Cell Broadcast Service) and MBMS (Mutimedia Broadcast Multicast Service) are known as methods specified as standard in 3GPP.<patcit num="1"><text>Japanese Patent Application Laid-Open No. 2007-202011</text></patcit>

<p num="0006"> However, it takes about 10 seconds to deliver emergency information to the majority of mobile terminals using the infrastructure of the existing broadcasting system.</p><p num="0007"> This is because if the mobile terminal is in a state where the broadcast communication function (for example, CBS reception function) is always activated, the battery life is greatly affected, so that the network uses the broadcast communication function of the mobile terminal. This is to deliver emergency information as a broadcast communication message after activation.</p><p num="0008"> Shortening the time required to deliver emergency information related to human life such as Earthquake Early Warnings as much as possible is highly likely to lead to lifesaving, so it is strongly demanded by society, and the time required for delivery is reduced to a few seconds. The challenge is to shorten it.</p><p num="0009"> In addition, it is required to distribute emergency information to roaming in users in countries other than their own country.</p><p num="0010"> Mobile terminals should only receive broadcast communication messages that include message identifiers included in the "received ID list (list of message identifiers that identify messages for broadcast communication to be received)" that they hold. It is configured, and in order to receive a broadcast communication message that notifies emergency information in a country other than the home country, a message identifier that identifies the broadcast communication message that notifies emergency information (emergency information message identifier). Needs to be defined in common throughout the world.</p><p num="0011"> However, in Japan and other countries, mobile terminals that have defined emergency information message identifiers for each communication carrier and have the emergency information message identifiers written in memory are already on the market, which is common throughout the world. A mobile terminal in which the emergency information message identifier is set in the "reception ID list" and a mobile terminal in which the communication carrier's own emergency information message identifier is set in the "reception ID list" are mixed. It ends up.</p><p num="0012"> In such a situation, in a network that distributes emergency information as a broadcast communication message, a broadcast communication message including an emergency information message identifier common throughout the world and an emergency information uniquely assigned to each communication carrier are used. It is necessary to send a broadcast communication message including a message identifier, which causes a problem of reception delay between mobile terminals that receive the broadcast communication message including each emergency information message identifier.</p><p num="0013"> Therefore, in a situation where mobile terminals that use carrier-specific emergency information message identifiers and emergency information message identifiers that are common throughout the world coexist as emergency information message identifiers that determine whether or not reception is possible, each emergency information message. It does not cause reception delay in mobile terminals between identifiers, and while delivering emergency information as broadcast communication messages to communication carrier's own emergency information message identifiers, it is unified into a universal emergency information message identifier. The issue is how to make the migration.</p><p num="0014"> Therefore, the present invention has been made in view of the above-mentioned problems, and is an emergency information distribution method and wireless control capable of notifying each user of the existence of emergency information earlier than in an existing broadcast system. It is an object of the present invention to provide a device, a radio base station and a mobile terminal.</p><p num="0015"> Further, the present invention is a situation in which a mobile terminal in which an emergency information message identifier unique to a communication carrier is set and a mobile terminal in which an emergency communication message identifier common to the whole world is set are mixed. Another object of the present invention is to provide an emergency information distribution method, a wireless control device, a wireless base station, and a mobile terminal capable of efficiently distributing emergency information without causing a reception delay in both mobile terminals.</p>

<p num="0016"> The first feature of the present invention is an emergency information distribution method for distributing emergency information to a mobile terminal using broadcast communication, which is based on a paging signal for activating the broadcast communication function of the mobile terminal. , The step of notifying the mobile terminal that the emergency information to be received is generated, and the mobile terminal generating the emergency information to the user in response to the notification by the paging signal. A step of notifying that the mobile terminal is present, a step of transmitting detailed information of the emergency information as a broadcast communication message to the mobile terminal, and a step of the mobile terminal activating the broadcast communication function by the paging signal. It is a gist to have a step of displaying the detailed information of the emergency information received as the broadcast communication message after being performed.</p><p num="0017"> In the first feature of the present invention, the paging signal includes the type of emergency information, and the mobile terminal performs a display corresponding to the type of emergency information included in the received paging signal. By doing so, the user may be notified.</p><p num="0018"> In the first feature of the present invention, the paging signal includes an outline of the emergency information, and the mobile terminal displays an outline of the emergency information included in the received paging signal. The user may be notified.</p><p num="0019"> In the first feature of the present invention, the paging signal includes a terminal operation identifier for specifying the operation of the mobile terminal, and the mobile terminal includes the terminal operation included in the received paging signal. The user may be notified by performing the operation specified by the identifier.</p><p num="0020"> In the first feature of the present invention, the mobile terminal manages a broadcast communication message to be received, and the mobile terminal manages a broadcast communication message that is not managed as the broadcast communication message to be received. Even if it is a message for broadcasting, a message for broadcast communication including an emergency information identifier that identifies the detailed information of the emergency information may be received.</p><p num="0021"> The second feature of the present invention is a wireless control device configured to deliver emergency information to a mobile terminal using broadcast communication, and activates the broadcast communication function of the mobile terminal. It is configured to notify the mobile terminal that emergency information to be received is being generated by the paging signal for the mobile terminal, and after transmitting the paging signal to the mobile terminal, the same The gist is that it is configured to transmit the detailed information of the emergency information as a message for communication.</p><p num="0022"> A third feature of the present invention is a radio base station configured to deliver emergency information to a mobile terminal using broadcast communication, and activates the broadcast communication function of the mobile terminal. It is configured to notify the mobile terminal that emergency information to be received is being generated by the paging signal for the mobile terminal, and after transmitting the paging signal to the mobile terminal, the same The gist is that it is configured to transmit the detailed information of the emergency information as a message for communication.</p><p num="0023"> A fourth feature of the present invention is a mobile terminal configured to receive emergency information using broadcast communication, which is received by a paging signal for activating the broadcast communication function of the mobile terminal. When notified that emergency information to be generated has been generated, the user is configured to notify that the emergency information has been generated, and the paging signal provides the broadcast communication function. The gist is that it is configured to display detailed information of the emergency information received as a broadcast communication message after being activated.</p><p num="0024"> In the fourth feature of the present invention, the user may be notified by displaying the type of the emergency information included in the received paging signal.</p><p num="0025"> In the fourth feature of the present invention, the user may be notified by displaying the summary of the emergency information included in the received paging signal.</p><p num="0026"> In the fourth feature of the present invention, the paging signal includes a terminal operation identifier for specifying the operation of the mobile terminal, and the operation specified by the terminal operation identifier included in the received paging signal. May be configured to notify the user by performing the above.</p><p num="0027"> In the fourth feature of the present invention, it is configured to manage the broadcast communication message to be received, and even if the broadcast communication message is not managed as the broadcast communication message to be received. , The broadcast communication message including the emergency information identifier that identifies the detailed information of the emergency information may be configured to be received.</p>

<p num="0028"> As described above, according to the present invention, an emergency information distribution method, a wireless control device, a wireless base station, and an emergency information distribution method capable of notifying each user of the existence of emergency information earlier than in an existing broadcast system. A mobile terminal can be provided.</p><p num="0029"> Further, according to the present invention, in a situation where a mobile terminal in which a communication carrier's own emergency information message identifier is set and a mobile terminal in which a universal emergency communication message identifier is set are mixed. Even so, it is possible to provide an emergency information distribution method, a wireless control device, a wireless base station, and a mobile terminal capable of efficiently distributing emergency information without causing a reception delay in both mobile terminals.</p>

(Configuration of Emergency Information Distribution System According to First Embodiment of the Present Invention) The configuration of the emergency information distribution system according to the first embodiment of the present invention will be described with reference to FIGS. 1 and 2.

First, with reference to FIG. 1, the difference between the conventional emergency information distribution method and the emergency information distribution method using the emergency information distribution system according to the present embodiment will be described.

As shown in Fig. 1 (a), in the conventional emergency information distribution method, the mobile terminal provides an emergency situation to the user until it receives the emergency information (detailed information) transmitted as a broadcast communication message. Could not be notified that is occurring.

On the other hand, as shown in FIG. 1 (b), in the emergency information distribution method according to the present embodiment, the mobile terminal receives a paging signal including "type of emergency information" and "summary of emergency information". At that time, it is possible to notify the user that an emergency has occurred, the type of emergency, the outline of the emergency, etc., and then when the detailed information of the emergency information is received, the user is notified. Can notify the details of the emergency.

As shown in FIG. 2, the emergency information distribution system according to the present embodiment includes an emergency information distribution device 1, a core network device 2, a wireless control device (or wireless base station) 3, and a mobile terminal 4. doing.

The emergency information distribution device 1 includes a generation unit 11 and a distribution unit 12.

The generation unit 11 is configured to generate emergency information in the event of an emergency, and the distribution unit 12 is configured to distribute the emergency information generated by the generation unit 11 to the core network device 2. ing.

The core network device 2 includes a receiving unit 21, a generating unit 22, and a distribution unit 23.

The receiving unit 21 is configured to receive the emergency information transmitted from the emergency information distribution device 1.

The generation unit 22 identifies the "type of emergency information", the "summary of emergency information", the "detailed information of emergency information", and the operation of the mobile terminal 4 based on the emergency information received by the reception unit 21. It is configured to generate a "terminal operation identifier" for this purpose.

The distribution unit 23 outputs the "type of emergency information", "summary of emergency information", "detailed information of emergency information", and "terminal operation identifier" generated by the generation unit 22 to the wireless control device (or wireless base station). ) It is configured to deliver to 3.

Further, the distribution unit 23 may be configured to instruct the wireless control device (or wireless base station) 3 of the distribution area of the emergency information.

The wireless control device (or wireless base station) 3 includes a receiving unit 31 and a distribution unit 32.

The receiving unit 31 is configured to receive the "type of emergency information", "summary of emergency information", "detailed information of emergency information", and "terminal operation identifier" transmitted from the core network device 2.

The distribution unit 32 has generated emergency information to be received from the mobile terminal 4 by the paging signal for activating the broadcast communication function of the mobile terminal 4 (that is, an emergency has occurred). It is configured to notify you.

Specifically, the distribution unit 32 refers to the mobile terminal 4 belonging to the above-mentioned "emergency information distribution area" with respect to the above-mentioned "emergency information type", "emergency information summary", and "terminal operation identifier". It is configured to transmit a paging signal including, etc.

Further, the distribution unit 32 is configured to include an "emergency information identifier" that identifies the paging signal as detailed information of the emergency information.

In addition, after transmitting the paging signal to the mobile terminal 4 (after the broadcast communication function of the mobile terminal 4 is activated), the distribution unit 32 sends "detailed information of emergency information" as a broadcast communication message. Is configured to send.

The mobile terminal 4 includes a receiving unit 41, an emergency information notification unit 42, and a detailed information display unit 43.

The receiving unit 41 is configured to receive the paging signal transmitted from the wireless control device (or wireless base station) 3 and activate the broadcast communication function upon receiving the paging signal.

Further, the receiving unit 41 is configured to receive detailed information of emergency information as a broadcast communication message transmitted from the wireless control device (or wireless base station) 3 after activating the broadcast communication function. Has been done.

Further, the receiving unit 41 is configured to manage the broadcast communication message to be received.

Specifically, the receiving unit 41 is configured to manage a message identifier for identifying a broadcast communication message to be received by a receiving ID list.

Then, the receiving unit 41 basically manages the broadcast communication message to be received, that is, the broadcast communication message including the message identifier managed by the reception ID list. It is configured to receive only.

However, the receiving unit 41 is a broadcast communication message that is not managed as a broadcast communication message to be received, that is, a broadcast communication message that does not include the message identifier managed by the reception ID list. Even so, it is configured to receive broadcast communication messages including an "emergency information identifier".

Similarly, the receiving unit 41 is configured to always receive the paging signal including the emergency information identifier.

When the emergency information notification unit 42 is notified by the paging signal received by the reception unit 41 that "emergency information to be received has been generated (that is, an emergency has occurred)", the emergency information notification unit 42 has been notified. It is configured to notify the user to that effect.

Specifically, the emergency information notification unit 42 displays a display corresponding to the "emergency information type" included in the paging signal received by the reception unit 41 (display of predetermined characters, images, and videos). May be configured to notify the user as described above.

For example, when the mobile terminal 4 is roaming, the emergency information notification unit 42 may display the display corresponding to the "type of emergency information" in the language of the country of the roaming destination.

Further, the emergency information notification unit 42 may be configured to notify the above-mentioned user by displaying the "summary of emergency information" included in the paging signal received by the reception unit 41. ..

Further, the emergency information notification unit 42 is configured to notify the above-mentioned user by performing an operation specified by the "terminal operation identifier" included in the paging signal received by the reception unit 41. You may.

For example, as the operation specified by the "terminal operation identifier", an arbitrary operation such as sounding a predetermined buzzer sound or displaying a screen pop-up is assumed. The detailed information display unit 43 is configured to display "detailed information of emergency information" received as a broadcast communication message after the broadcast communication function is activated by the paging signal received by the reception unit 41. ing.

(Operation of the mobile communication system according to the first embodiment of the present invention) The operation of the emergency information distribution system according to the first embodiment of the present invention will be described with reference to FIGS. 3 and 4.

First, with reference to FIG. 3, the operation when delivering emergency information (Earthquake Early Warning) using the CBS method will be described.

As shown in FIG. 3, in step S1001, the emergency information distribution device CBE (Cell Broadcast Entity) tells the core network device CBC (Cell Broadcast Center) the "emergency information distribution area" and the "emergency information type (emergency information type). For example, the information necessary for the distribution of emergency information such as "disaster type)", "summary of emergency information", and "terminal operation identifier" is distributed.

Here, if only "Earthquake Early Warning" exists as the "Earthquake Early Warning", the core network device CBC can understand the "Earthquake Information Type", so the distribution of the "Earthquake Information Type" is omitted. be able to.

Further, when the "summary of emergency information" is generated in the core network device CBC, the distribution of the "summary of emergency information" can be omitted.

In step S1002, the core network device CBC normally refers to the radio control device RNC (or radio base station) corresponding to the "emergency information distribution area" based on the information received from the emergency information distribution device CBE. In addition to the CBS parameters, "emergency information identifier", "emergency information type", "emergency information summary", "emergency information detailed information", "terminal operation identifier", and "emergency information distribution area" are transmitted. To do.

Specifically, the core network device CBC has "emergency information identifier", "emergency information type", and "emergency information summary" in the "Write-Replace" parameter specified in TS25.419 (SABP). , "Detailed information of emergency information", "Terminal operation identifier", and "Distribution area of emergency information" are added and transmitted.

In step S1003, when the "emergency information identifier" is set in the "Write-Replace" parameter received from the core network device CBC, the radio control device RNC (or radio base station) has an "emergency information distribution area". The mobile terminal UE belonging to "" is notified of the CBS paging signal (RRC: specified in 3GPP TS25.331) including "emergency information type", "emergency information summary", and "terminal operation identifier". ..

In step S1004, the mobile terminal UE that received the CBS paging signal linked the "emergency information type (Earthquake Early Warning)" and the "emergency information summary" to simply indicate that an earthquake occurred. Notify the user of the summary.

Further, the mobile terminal UE performs the operation specified by the "terminal operation identifier" when performing the above notification (for example, buzzer sounding).

Here, in the mobile terminal UE, the parameters for "summary of emergency information" and the mobile terminal<u style="single">UE</u>By deciding in advance the part to insert the parameter for "Emergency Information Summary" notified in "Emergency Information Summary" in the prescribed format created by It is possible to minimize the amount of information.

In step S1005, the radio control device RNC (or radio base station) delivers detailed information of emergency information to the mobile terminal UE as a broadcast communication message (BMC CBS message).

In step S1006, the mobile terminal UE that has received the detailed information of the emergency information displays the detailed information of the emergency information together with the buzzer sound and the display of the screen pop-up based on the method specified by the serial number or the like.

In step S1007, the radio control device RNC (or radio base station) transmits "Report-Success" to the core network device CBC, and in step S1008, the core network device CBC sends the emergency information distribution device CBE to the emergency information distribution device CBE. And send "Report-Success".

Second, with reference to Fig. 4, the operation when emergency information (Earthquake Early Warning) is distributed using the MBMS method will be described.

As shown in FIG. 4, in step S2001, the emergency information distribution device informs the core network device BM-SC (Broadcast Multicast Service Center) of the emergency information distribution area and the emergency information type (for example, disaster). (Type of) , Summary of emergency information , Terminal operation identifier , and other information necessary for distribution of emergency information.

Here, if only "Earthquake Early Warning" exists as the "Earthquake Early Warning", the core network device BM-SC can understand the "Earthquake Information Type", so the distribution of the "Earthquake Information Type" It can be omitted.

Further, when the core network device BM-SC generates the "emergency information summary", the distribution of the "emergency information summary" can be omitted.

In step S2002, the core network device BM-SC receives "emergency information information" via the switching device GGSN (Gateway GPRS Support Node) / SGSN (Serving GPRS Support Node) based on the information received from the emergency information distribution device. For the wireless control device RNC (or wireless base station) corresponding to the "distribution area", in addition to the normal MBMS parameters, "emergency information identifier", "emergency information type", "emergency information summary", etc. Send "detailed information of emergency information", "terminal operation identifier", and "delivery area of emergency information".

Specifically, the core network device BM-SC has "Emergency information identifier" and "Emergency information type" in the parameters of "Session Start Request (RAR (START))" specified in TS29.061 (PDN). , "Summary of emergency information", "Detailed information of emergency information", "Terminal operation identifier", and "Distribution area of emergency information" are added and transmitted (PDN / GTP / RARAP).

In step S2003, the radio control device RNC (or radio base station) transmits a "Session Start Response" to the core network device BM-SC via the switching device GGSN / SGSN.

In step S2004, the radio control device RNC (or radio base station) has an "emergency information identifier" set in the parameter of the "Session Start Request (RAR (START))" received from the core network device BM-SC. In this case, the mobile terminal UE belonging to the "emergency information distribution area" is notified by including the "emergency information type", "emergency information summary", and "terminal operation identifier" in the MBMS paging signal (RRC). To do.

In step S2005, the mobile terminal UE that received the MBMS paging signal linked the "emergency information type (Earthquake Early Warning)" and the "emergency information summary" to simply indicate that an earthquake occurred. Notify the user of the summary.

In step S2006, the radio control device RNC (or radio base station) broadcasts to the mobile terminal UE via the switching device GGSN / SGSN after establishing an MBMS session with the mobile terminal UE. Deliver detailed information on emergency information as a communication message (MBMS message).

In step S2007, the mobile terminal UE that has received the detailed information of the emergency information displays the detailed information of the emergency information together with the buzzer sound and the display of the screen pop-up based on the method specified by the serial number or the like.

(Operation / Effect of Emergency Information Distribution System According to First Embodiment of the Present Invention) According to the emergency information distribution system according to the present embodiment, in the broadcast system using the conventional platform (CBS or MBMS), the paging signal is used before the broadcast communication message (detailed information of the emergency information) is delivered. It is possible to notify the mobile terminal of the outline of the emergency information, support the user to take the primary action quickly, and reduce the impact on human life due to an emergency such as a disaster.

Further, according to the emergency information distribution system according to the present embodiment, the terminal is used for the paging signal.<u style="single">motion</u>By including the identifier, it is possible to specify the action to be performed by the mobile terminal when receiving the summary of emergency information.

In addition, according to the emergency information distribution system according to the present embodiment, when efforts for distribution of emergency information are carried out internationally in the future and a message identifier for emergency information is defined internationally, the communication carrier independently A situation in which a mobile terminal set to receive an emergency information message identifier being used and a mobile terminal set to receive an emergency information message identifier commonly used all over the world are mixed. Even so, by using the emergency information message identifier that is uniquely used by existing communication carriers, it is possible to receive emergency information on both mobile terminals with a single transmission, and the emergency information message identifier. Can be smoothly transferred from the communication carrier's unique emergency information message identifier to the universal emergency information message identifier.

The above-mentioned operations of the mobile terminal, the wireless base station, and the wireless control device may be performed by hardware, may be performed by a software module executed by a processor, or may be performed by a combination of both. May be good.

Software modules include RAM (Random Access Memory), flash memory, ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EEPROM (Electronically Erasable and Programmable ROM), registers, hard disks, and removable disks. Or, it may be provided in an arbitrary format storage medium such as a CD-ROM.

Such a storage medium is connected to the processor so that the processor can read and write information to the storage medium. Further, such a storage medium may be integrated in the processor. Further, such a storage medium and a processor may be provided in the ASIC. Such an ASIC may be provided in the mobile station UE and the radio base station eNB. Further, such a storage medium and a processor may be provided in the mobile station UE and the radio base station eNB as discrete components.

Although the present invention has been described in detail using the above-described embodiments, it is clear to those skilled in the art that the present invention is not limited to the embodiments described in the present specification. The present invention can be implemented as modifications and modifications without departing from the spirit and scope of the present invention as defined by the claims. Therefore, the description of the present specification is for the purpose of exemplification and does not have any limiting meaning to the present invention.

<figref num="1">It is a figure for demonstrating the difference between the emergency information distribution system which concerns on 1st Embodiment of this invention, and the conventional emergency information distribution system.</figref><figref num="2">It is a functional block diagram of the emergency information distribution system which concerns on 1st Embodiment of this invention.</figref><figref num="3">It is a sequence diagram which shows the emergency information distribution method which concerns on 1st Embodiment of this invention.</figref><figref num="4">It is a sequence diagram which shows the emergency information distribution method which concerns on 1st Embodiment of this invention.</figref>

Code description

00951 ... Emergency information distribution device 2 ... Core network equipment 3 ... Wireless control device 4 ... Mobile terminal 11, 22 ... Generator 12, 23, 32 ... Distribution Department 21, 31, 41 ... Receiver 42 ... Emergency Information Notification Department 43 ... Detailed information display