JP2010206841A - Message distribution method, radio base station, and message distribution station - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a message distribution method, radio base station, and message distribution station, flexibly designating the unit of a distribution area. <P>SOLUTION: This message distribution method has: a process A in which a message distribution station CBC determines distribution area information and a distribution class, and notifies a radio base station eNB of them on the basis of a message distribution request including distribution target area information received from a news flash transmission station CBE; and a step B in which the radio base station eNB determines a distribution area on the basis of the distribution area information and the distribution class, and distributes a predetermined message to a mobile station within the distribution area. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a message delivery method, a radio base station, and a message delivery station that deliver a predetermined message to mobile stations in a delivery area.

  In 3GPP, a mechanism for distributing an emergency message to a specific distribution area on a packet switching network (hereinafter referred to as an emergency distribution system) is defined (see Non-Patent Document 1).

  With reference to FIG. 6, the operation of the emergency message delivery system will be described.

  As shown in FIG. 6, in step S2001, the breaking news transmitting station CBE transmits a message delivery request for requesting the message delivery station CBC to deliver an emergency message.

  In step S2002, the message distribution station CBC determines one or more tracking areas (TA) and distribution area information (Emergency Area ID) based on the distribution target area information included in the message distribution request.

  In step S2003, the message delivery station CBC transmits a message delivery request including the tracking area and delivery area information described above to the mobile control device MME corresponding to the tracking area.

  In step S2004, the mobility control apparatus MME specifies the radio base station eNB that belongs to the tracking area included in the received message delivery request.

  In step S2005, the mobility control apparatus MME transmits a message distribution request including distribution area information to the specified radio base station eNB.

  In step S2006, the radio base station eNB determines whether or not the radio base station eNB is included in the emergency message delivery area based on the delivery area information contained in the received message delivery request.

  If it is determined that the radio base station eNB is included in the distribution area of the emergency message, the radio base station eNB distributes the emergency message to the mobile station in the distribution area corresponding to the distribution area information in step S2007, In S2008, an emergency message transmission confirmation indicating that is transmitted to the mobile control device MME.

  In step S2009, the mobility control apparatus MME transfers the emergency message transmission confirmation received from the radio base station eNB to the message distribution station CBC.

“General Packet Radio Service (GRPS) enhancement for Evolved Universal Terrestrial Radio Access Network (E-UTRAN) access, 3GPP TS 23.401 V8.

  However, in the conventional message delivery system, delivery area information that designates a delivery area in units of sectors and delivery area information that designates a delivery area in units of wide areas (for example, Tokyo) cannot be mixed.

  Therefore, in the conventional message delivery system, when the delivery area information designates the delivery area in units of sectors and the delivery area extends over a wide area, the radio base station eNB performs processing on a number of delivery area information. There is a problem in that there is a possibility that an increase in processing load in the radio base station eNB and a delay in delivery of an emergency message may occur.

  Therefore, the present invention has been made in view of the above-described problems, and an object thereof is to provide a message distribution method, a radio base station, and a message distribution station that can flexibly specify a unit of a distribution area.

  A first feature of the present invention is a message distribution method for distributing a predetermined message to mobile stations in a distribution area, wherein the message distribution station includes a distribution target area information received from a bulletin transmission station. And determining the distribution area information and the distribution type and notifying the wireless base station, and the wireless base station determines the distribution area based on the distribution area information and the distribution type, And a step B of delivering the predetermined message to mobile stations in the delivery area.

  In the first feature of the present invention, in the step A, the message distribution station determines a tracking area, the distribution area information, and the distribution type based on the message distribution request, and sets the distribution area to the distribution target area. You may have the process of notifying the corresponding movement control apparatus, and the process of the said movement control apparatus notifying the said delivery area information and the said delivery classification with respect to the said radio base station which belongs to the said tracking area.

  In the first aspect of the present invention, the radio base station manages a table for storing distribution area information and a distribution area in association with each distribution type, and in the step B, the radio base station The predetermined message may be distributed to mobile stations in a distribution area associated with the distribution area information with reference to a table corresponding to the distribution type.

  A second feature of the present invention is a radio base station configured to distribute a predetermined message to mobile stations in a distribution area, and associates the distribution area information and the distribution area for each distribution type. The table within the distribution area associated with the distribution area information notified from the message distribution station with reference to the table corresponding to the distribution type notified from the message distribution station. The gist is that the predetermined message is delivered to a station.

  A third feature of the present invention is a message distribution station configured to distribute a predetermined message to mobile stations in a distribution area, and message distribution including distribution target area information received from a bulletin transmission station. Based on the request, the distribution area information and the distribution type are determined, and a message distribution request including the distribution area information and the distribution type is sent to the exchange corresponding to the determined distribution area information. The gist is that it is configured to transmit.

  As described above, according to the present invention, it is possible to provide a message distribution method, a radio base station, and a message distribution station that can flexibly specify a unit of a distribution area.

1 is an overall configuration diagram of a mobile communication system according to a first embodiment of the present invention. FIG. 3 is a functional block diagram of a radio base station according to the first embodiment of the present invention. It is a figure which shows an example of the table managed with the database of the wireless base station which concerns on the 1st Embodiment of this invention. It is a functional block diagram of the message delivery station which concerns on the 1st Embodiment of this invention. It is a sequence diagram which shows operation | movement of the message delivery system which concerns on the 1st Embodiment of this invention. It is a sequence diagram which shows operation | movement of a general message delivery system.

(Configuration of message distribution system according to the first embodiment of the present invention)
The configuration of the message delivery system according to the first embodiment of the present invention will be described with reference to FIGS.

  As shown in FIG. 1, the message delivery system according to the present embodiment includes a breaking news transmission station CBE, a message delivery station CBC, a mobility control device MME, a radio base station eNB, and a mobile station UE. .

  As illustrated in FIG. 2, the radio base station eNB includes a signal processing unit 11, a packet transmission / reception IF unit 12, a routing control unit 13, a distribution type determination unit 14, a database 15, an emergency message generation unit 16, A wireless control unit 17 and a wireless transmission / reception IF unit 18 are provided.

  The database 15 manages a table for storing distribution area information and distribution areas in association with each distribution type.

  FIG. 3 shows an example of such a table. The table shown in FIG. 3 is configured to be associated with “distribution type”, “priority control”, “distribution area information”, and “distribution area”.

  The database 15 is configured to answer “priority control” and “distribution area” associated with the distribution type and distribution area information when receiving the distribution type and distribution area information from the signal processing unit 11. Yes. Here, “priority control” indicates whether or not a message delivery request should be processed with priority.

  In the example of FIG. 3, “distribution area information” included in a message distribution request including the distribution type “A” is specified as “distribution area” in units of wide area and included in the message distribution request including the distribution type “B”. “Distribution area information” is configured to designate “distribution area” in units of sectors.

  In the example of FIG. 3, the message delivery request including the delivery type “A” is preferentially processed, and the message delivery request including the delivery type “B” is not preferentially processed.

  The signal processing unit 11 is configured to receive the message delivery request transmitted by the mobility control device MME via the packet transmission / reception IF unit 12 and the routing control unit 13.

  The signal processing unit 11 is configured to analyze the content of the message delivery request and detect the delivery type. Here, the signal processing unit 11 is configured to detect the distribution type by making an inquiry to the distribution type determination unit 14. The delivery type determination unit 14 may be included in the signal processing unit 11.

  In addition, the signal processing unit 11 searches the distribution area corresponding to the distribution area information included in the received message distribution request with reference to a table that matches the detected distribution type in the database 15.

  When a specific distribution area is detected, the signal processing unit 11 transmits a message distribution request together with information about the detected distribution area to the emergency message generation unit 16.

  The emergency message generation unit 16 converts the emergency message included in the message distribution request into an emergency message for the mobile station UE, and the mobile station in the above distribution area via the radio control unit 17 and the radio transmission / reception IF unit 18. Send to. Note that the emergency message generation unit 16 may be included in the signal processing unit 11.

  If the signal processing unit 11 determines that a specific message delivery request should be preferentially processed in response to the response from the database 15, another function block in the radio base station eNB (for example, emergency The message processing unit 16, the wireless control unit 17, the wireless transmission / reception IF unit 18 and the like are instructed to that effect.

  As described above, the radio base station eNB refers to the table corresponding to the distribution type notified from the message distribution station CBC via the mobile control apparatus MME, and notifies from the message distribution station CBC via the mobile control apparatus MME. The emergency message (predetermined message) is distributed to the mobile station UE in the distribution area associated with the distributed area information.

  As shown in FIG. 4, the message distribution station CBC includes a signal processing unit 21, a packet transmission / reception IF unit 22, a routing control unit 23, a distribution type determination unit 24, a database 25, and an emergency message generation unit 26. It has.

  The signal processing unit 21 is configured to receive the message delivery request transmitted by the breaking news transmission station CBE via the packet transmission / reception IF unit 22 and the routing control unit 23.

  The signal processing unit 21 analyzes the content of the message delivery request, and sends information related to the generation of the emergency message (emergency message type, delivery source bulletin transmitting station information, delivery target area information, etc.) to the emergency message generation unit 26. Configured to notify.

  The emergency message generator 26 is configured to refer to the database 25 based on the information received from the signal processor 21 and derive tracking area and distribution area information.

  The distribution type determination unit 24 transmits information transmitted from the signal processing unit 21 to the emergency message generation unit 26 (emergency message type, distribution source bulletin transmission station information, distribution target area information, etc.) or the emergency message generation unit 26. The distribution type may be determined by receiving from the signal processing unit 21 any information (information such as tracking area and distribution area information) retrieved from the database to be notified.

  The delivery type determination unit 24 may be included in the emergency message generation unit 26 or the signal processing unit 21. Further, the emergency message generator 26 may be included in the signal processor 21.

(Operation of the message delivery system according to the first embodiment of the present invention)
With reference to FIG. 5, the operation of the message delivery system according to the first exemplary embodiment of the present invention will be described.

  As shown in FIG. 5, in step S1001, the bulletin transmission station CBE transmits a message distribution request for requesting the message distribution station CBC to distribute the emergency message.

  In step S1002, the message delivery station CBC determines one or more tracking areas, delivery area information, and delivery type based on delivery target area information included in the message delivery request.

  Specifically, the message delivery station CBC, based on the delivery target area information included in the message delivery request, the tracking area and delivery area information (identifier that identifies the radio area in each radio base station eNB belonging to the tracking area) To decide.

  Further, the message distribution station CBC determines a distribution type indicating the type of distribution area information based on information such as the type of distribution target area information.

  In step S1003, the message delivery station CBC transmits a message delivery request including the tracking area, delivery area information, and delivery type to the mobile control device MME corresponding to the tracking area.

  In step S1004, the mobility control apparatus MME specifies the radio base station eNB that belongs to the tracking area included in the received message delivery request.

  In step S1005, the mobility control apparatus MME transmits a message delivery request including delivery area information and a delivery type to the specified radio base station eNB.

  In step S1006, the radio base station eNB refers to a table corresponding to the distribution type included in the received message distribution request, and determines a distribution area associated with the distribution area information included in the message distribution request.

  In addition, when the distribution type included in the received message distribution request is “predetermined type”, the radio base station eNB determines any cell or all cells under the radio base station eNB as the emergency message distribution area. May be.

  In step S1007, the radio base station eNB distributes the emergency message to the mobile stations in the determined distribution area. Send.

  Here, the radio base station eNB may be configured to preferentially distribute an emergency message related to a message distribution request that is determined to be preferentially processed.

  In step S1009, the mobile control device MME transfers the emergency message transmission confirmation received from the radio base station eNB to the message distribution station CBC.

(Operations and effects of the message delivery system according to the first embodiment of the present invention)
According to the message delivery system according to the first embodiment of the present invention, the message delivery station CBC can flexibly switch the unit of the emergency message delivery area according to the combination of the delivery type and the delivery area information.

  Moreover, according to the message delivery system which concerns on the 1st Embodiment of this invention, the priority control in the radio base station eNB is realizable with delivery classification.

  That is, for example, when the distribution area information is an area type used for an emergency message with high urgency, the radio base station performs processing of the emergency message with other processing such as an emergency message with low urgency. And can be processed with priority.

(Modification)
The message distribution station CBC may determine the distribution type based on information other than the distribution area information. For example, the message distribution station CBC may set the distribution type for each breaking news transmission station CBE that is the source of the emergency message.

  In this case, since the delivery type is specified for each bulletin transmission station CBE, the message delivery station CBC does not need a function for determining the delivery type based on the delivery area information, and the processing speed can be increased.

  Note that the operations of the message delivery station CBC, the radio base station eNB, and the mobile station UE described above may be implemented by hardware, may be implemented by a software module executed by a processor, or may be a combination of both. May be implemented.

  The software module includes a RAM (Random Access Memory), a flash memory, a ROM (Read Only Memory), an EPROM (Erasable Programmable ROM), an EEPROM (Electronically Erasable and Programmable ROM, a hard disk, a registerable ROM, a hard disk). Alternatively, it may be provided in a storage medium of an arbitrary format such as a CD-ROM.

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

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

eNB ... radio base station 11, 21 ... signal processing unit 12,22 ... packet transmission / reception IF unit 13,23 ... routing control unit 14,24 ... delivery type determination unit 15,25 ... database 16, 26 ... emergency message generation unit 17 ... Wireless control unit 18 ... Wireless transmission / reception IF unit CBC ... Message distribution station

Claims (5)

A message delivery method for delivering a predetermined message to mobile stations in a delivery area,
Step A for the message distribution station to determine the distribution area information and the distribution type based on the message distribution request including the distribution target area information received from the bulletin transmission station, and to notify the radio base station;
The wireless base station includes a step B of determining the distribution area based on the distribution area information and the distribution type, and distributing the predetermined message to mobile stations in the distribution area. Message delivery method. Step A includes
The message delivery station determines a tracking area, the delivery area information, and the delivery type based on the message delivery request, and notifies the mobility control device corresponding to the delivery target area;
2. The message delivery method according to claim 1, further comprising a step of notifying the delivery area information and the delivery type to the radio base station belonging to the tracking area. The radio base station manages, for each distribution type, a table for storing distribution area information and distribution areas in association with each other,
In the step B, the radio base station refers to a table corresponding to the distribution type, and distributes the predetermined message to mobile stations in a distribution area associated with the distribution area information. The message delivery method according to claim 1 or 2. A radio base station configured to deliver a predetermined message to mobile stations in a delivery area,
For each distribution type, it manages a table that stores distribution area information and distribution areas in association with each other,
The predetermined message is distributed to mobile stations in the distribution area associated with the distribution area information notified from the message distribution station with reference to the table corresponding to the distribution type notified from the message distribution station. A radio base station configured as described above. A message delivery station configured to deliver a predetermined message to mobile stations in a delivery area,
Based on the message distribution request including the distribution target area information received from the bulletin transmission station, the distribution area information and the distribution type are determined,
A message distribution station configured to transmit a message distribution request including the distribution area information and the distribution type to an exchange corresponding to the determined distribution area information.

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