WO2013024581A1 - Base station device, communication terminal device, notifying method, and receiving method - Google Patents

Abstract

In the present invention, a base station device makes it possible to determine on the receiving-side whether or not reception of all types of alert messages being delivered has been completed, and to curb the amount of receiving-side battery power consumption. A base station device (100) transmits a series of information using a plurality of types of notification messages. A transmission unit (107) repeatedly transmits a plurality of types of notification messages in a predetermined transmission period. A control unit (103) controls the transmission order of each of the types of notification messages in the plurality of types of notification messages being transmitted by the transmission unit (107), so that the transmission order will be the same within each of the transmission periods.

Description

Base station apparatus, communication terminal apparatus, notification method, and reception method

The present invention relates to a base station apparatus, a communication terminal apparatus, a notification method, and a reception method applied to CMAS (Commercial Mobile Alert System) standardized by, for example, 3GPP (Third Generation Partnership Project).

CMAS, a mobile network emergency alert system for the US, has been standardized as a function of 3GPP Release 9 (for example, Non-Patent Document 1 and Non-Patent Document 2). CMAS issues a CMAS message (hereinafter referred to as “alarm message”) issued by a government agency to an LTE (LongLTerm Evolution) network, a UMTS (Universal Mobile Telecommunication System) network, or a GSM （(Global System （for Mobile Communications) It is a system that distributes through the network. CMAS distributes urgent information, such as messages from the president, warnings about threats to life safety, and information about missing children, to commercial mobile terminals, although extreme immediacy is not required. It is a system that makes it possible.

For example, in the LTE network, when the delivery of a warning message (Warning message) is started, the base station apparatus starts notification of the warning message using the system information block type 12 (hereinafter referred to as “SIB12”). The base station apparatus notifies the communication terminal apparatus to receive an alarm message by notifying a paging message including information (cmas-Indication) indicating that notification by CMAS has been started. The base station apparatus uses system information block type 1 (hereinafter referred to as “SIB1”) to notify that SIB12 is broadcast and, if SIB12 is broadcast, the reception timing of SIB12. .

In SIB12, a message identifier (messageIdentifier) and a serial number (serialNumber) for identifying a plurality of types of alarm messages are also notified. Therefore, the communication terminal device can identify the type of the received alarm message based on the message identifier and the serial number.

One alarm message is divided into one or a plurality of SIBs 12 and transmitted. In SIB12, the segment number (segmentNumber) and the segment type (warningMessageSegmentType) are also notified. Therefore, the communication terminal device on the receiving side can assemble the divided alarm messages into one alarm message based on the segment number and the segment type.

The communication terminal device may fail to receive the SIB12. In this case, the communication terminal device can detect that the reception of the specific SIB 12 has failed from the timing information of the SIB 12 broadcast by the SIB 1 (for example, Non-Patent Document 3).

The base station apparatus is configured such that when a subordinate communication terminal apparatus fails to receive an alarm message, a new communication terminal apparatus transitions under the base station apparatus, or a new communication terminal apparatus under the base station apparatus In consideration of the case of starting, a plurality of types of alarm messages currently distributed are repeatedly notified.

"Personal Localized Alerting Network (PLAN)", Internet <http://www.fcc.gov/guides/personal-localized-alerting-network-plan> 3GPP TS 22.268 v9.2.1, Public Warning System (PWS) Requirements 3GPP TS 36.331 v9.7.0, RRC Protocol specification

However, in the conventional system, it is impossible for the receiving side to determine whether or not the reception of all types of alarm messages being distributed has been completed. Therefore, the communication terminal device on the receiving side repeatedly tries to receive the alarm message while the base station distributes the alarm message, and there is a problem that battery consumption in the communication terminal device increases.

An object of the present invention is to determine whether or not reception of all types of distributed alarm messages has been completed on the receiving side, and to suppress the battery consumption on the receiving side It is to provide a communication terminal device, a notification method, and a reception method.

The base station apparatus of the present invention is a base station apparatus that transmits a series of information using a plurality of types of notification messages, the transmission means that repeatedly transmits the plurality of types of notification messages at a predetermined transmission cycle, and the transmission Control means for controlling the transmission order so that the transmission order of each type of notification message in the plurality of types of notification messages transmitted by the means is the same in each of the transmission periods.

The base station apparatus of the present invention is a base station apparatus that sequentially transmits a series of information using a plurality of types of notification messages, and repeatedly transmits the plurality of types of notification messages at a predetermined transmission cycle. It adopts a configuration comprising transmission means for transmitting period information relating to a transmission period, and control means for controlling transmission of the period information in the transmission means.

The communication terminal device according to the present invention, when a plurality of types of notification messages are repeatedly transmitted at a predetermined transmission cycle, is transmitted so that the transmission order of each type of notification message is the same in each of the transmission cycles A communication terminal device that receives a plurality of types of notification messages and obtains a series of information included in the plurality of types of notification messages, the receiving unit receiving the plurality of types of notification messages, and the reception unit The transmission cycle is recognized based on the reception order of each type of notification message in the plurality of types of notification messages, and when the reception of the plurality of types of notification messages transmitted within the recognized transmission cycle is completed, Control means for controlling the receiving means so as to stop the reception of the plurality of types of notification messages in the receiving means. A configuration that.

The notification method of the present invention is a notification method in a base station apparatus that sequentially transmits a series of information using a plurality of types of notification messages, and sequentially transmitting the plurality of types of notification messages during a predetermined transmission period. And controlling the transmission order so that the transmission order of each type of notification message in the plurality of types of notification messages to be transmitted is the same in each of the transmission periods.

The notification method of the present invention is a notification method in a base station apparatus that sequentially transmits a series of information using a plurality of types of notification messages, and sequentially transmits the plurality of types of notification messages during a predetermined transmission period. In addition, the method includes a step of transmitting period information relating to the transmission period, and a step of controlling transmission of the period information.

In the reception method of the present invention, when a plurality of types of notification messages are repeatedly transmitted in a predetermined transmission cycle, the plurality of notification messages transmitted so that the transmission order of each type of notification message is the same in each of the transmission cycles A receiving method for receiving a plurality of types of notification messages and obtaining a series of information included in the plurality of types of notification messages, the step of receiving the plurality of types of notification messages, and the received plurality of types of notifications Recognizing the transmission cycle based on the reception order of each type of notification message in the message, and when the reception of the plurality of types of notification message transmitted within the recognized transmission cycle is completed, the plurality of types of notification message And the step of controlling the reception step so as to stop reception.

According to the present invention, it is possible to determine on the receiving side whether or not reception of all types of distributed alarm messages has been completed, and it is possible to suppress battery consumption on the receiving side.

The block diagram which shows the structure of the base station apparatus which concerns on Embodiment 1 of this invention. The block diagram which shows the structure of the communication terminal device which concerns on Embodiment 1 of this invention. The figure which shows operation | movement of the base station apparatus and communication terminal apparatus when reception of all the SIB12 in Embodiment 1 of this invention is successful. The figure which shows operation | movement of the base station apparatus and communication terminal apparatus when reception of some SIB12 in Embodiment 1 of this invention fails The flowchart which shows operation | movement of the communication terminal device which concerns on Embodiment 1 of this invention. The block diagram which shows the structure of the base station apparatus which concerns on Embodiment 2 of this invention. The figure which shows operation | movement of the base station apparatus and communication terminal apparatus which concern on Embodiment 2 of this invention. The block diagram which shows the structure of the base station apparatus which concerns on Embodiment 3 of this invention. The figure which shows operation | movement of the base station apparatus and communication terminal apparatus which concern on Embodiment 3 of this invention. The block diagram which shows the structure of the base station apparatus which concerns on Embodiment 4 of this invention. The figure which shows operation | movement of the base station apparatus and communication terminal apparatus which concern on Embodiment 4 of this invention. The figure which shows operation | movement of the base station apparatus and communication terminal apparatus which concern on Embodiment 5 of this invention.

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

(Embodiment 1)
<Configuration of base station device>
FIG. 1 is a block diagram showing a configuration of base station apparatus 100 according to Embodiment 1 of the present invention. In FIG. 1, the alarm message distribution device 150 and the exchange station device 160 are also described together with the base station device 100.

The warning message issuing unit 170 has a warning message storage unit 101, a control unit 103, and a warning message dividing unit 105, and issues a plurality of types of warning messages.

The alarm message storage unit 101 sequentially stores a plurality of types of alarm messages distributed from the alarm message distribution device 150 via the exchange station device 160. Here, the plurality of types of alarm messages are messages used to transmit a series of information such as a message from the president, an alarm regarding a threat to life safety, information regarding a missing child, and the like.

The adjustment unit 102 monitors the alarm message stored in the alarm message storage unit 101 and notifies the control unit 103 of the message identifier and serial number of the stored alarm message.

The control unit 103 requests the paging message issuing unit 104 to issue a paging message when notifying new information. For example, the control unit 103 issues a paging message to the paging message issuing unit before informing the information about the missing child when notifying the information about the missing child after notifying the message from the president. Request to 104. Here, the paging message is a message that prompts the communication terminal device to obtain an alarm message.

The control unit 103 takes out the alarm messages stored in the alarm message storage unit 101 one by one in a predetermined order based on the notification from the adjustment unit 102. Specifically, the control unit 103 refers to the message identifier and serial number notified from the adjustment unit 102, and is determined in advance so that the transmission order of each type of alarm message is the same in each transmission cycle. Alarm messages are retrieved in order. The transmission order of each type of alarm message will be described later.

The control unit 103 determines whether or not to split the alarm message according to the data size of the extracted alarm message. When it is determined that the warning message is to be divided, the control unit 103 outputs the extracted warning message to the warning message dividing unit 105. When it is determined that the warning message is not divided, the control unit 103 outputs the extracted warning message to the notification information transmission unit 106. The control unit 103 repeatedly extracts the alarm messages stored in the alarm message storage unit 101 in a predetermined order and repeats the above processing.

The paging message issuing unit 104 outputs a paging message in which a flag (cmas-Indication) indicating delivery of an alarm message is set to the transmission unit 107 in response to a request from the control unit 103.

The warning message dividing unit 105 divides the warning message received from the control unit 103 and outputs the divided warning message to the notification information transmitting unit 106. In the following description of the present embodiment, both the undivided alarm message and the divided alarm message are simply referred to as “alarm messages”.

The notification information transmitting unit 106 generates the SIB 12 including the alarm message received from the control unit 103 or the alarm message received from the alarm message dividing unit 105, and outputs the generated SIB 12 to the transmission unit 107.

The transmitting unit 107 generates a wireless transmission signal from the paging message received from the paging message issuing unit 104 or a signal including the SIB 12 received from the broadcast information transmitting unit 106, and outputs the generated wireless transmission signal to the antenna 108.

The antenna 108 transmits the wireless transmission signal received from the transmission unit 107.

<Configuration of communication terminal device>
FIG. 2 is a block diagram showing a configuration of communication terminal apparatus 200 according to Embodiment 1 of the present invention.

The alarm message receiving unit 270 includes an alarm message assembling unit 205 and a control unit 206, and assembles the received alarm message.

The antenna 201 outputs the received signal to the receiving unit 202.

The receiving unit 202 extracts a paging message or broadcast information from the received signal received from the antenna 201 and outputs the extracted paging message to the paging message receiving unit 203 or outputs the extracted broadcast information to the broadcast information receiving unit 204. To do.

When the paging message is included in the signal received from the receiving unit 202, the paging message receiving unit 203 notifies the control unit 206 that the paging message has been acquired.

The notification information receiving unit 204 starts acquiring the SIB 12 included in the notification information received from the receiving unit 202 in accordance with an instruction from the control unit 206. After starting acquisition of SIB 12, broadcast information receiving unit 204 determines success or failure of reception of SIB 12, and outputs the determination result to control unit 206. At this time, the broadcast information receiving unit 204 also outputs the message identifier and serial number included in the SIB 12 to the control unit 206. When the broadcast information receiving unit 204 determines that the SIB 12 has been successfully received, the broadcast information receiving unit 204 outputs the acquired SIB 12 to the warning message assembling unit 205. The broadcast information receiving unit 204 stops acquiring the SIB 12 in accordance with an instruction from the control unit 206.

The warning message assembling unit 205 takes out the warning message included in the SIB 12 received from the notification information receiving unit 204 and assembles the warning message based on the segment number and the segment type included in the SIB 12. When the alarm message assembly is completed, the alarm message assembly unit 205 outputs the assembled alarm message to the alarm message display unit 207 and the control unit 206.

When the control unit 206 receives a paging message acquisition notification from the paging message receiving unit 203, the control unit 206 instructs the broadcast information receiving unit 204 to start acquiring the SIB 12. The control unit 206 determines whether one transmission cycle has elapsed based on the message identifier and serial number received from the notification information receiving unit 204. Specifically, the control unit 206 determines that one transmission cycle has elapsed when an alarm message of the same type as an already acquired alarm message is acquired. A method for determining whether one transmission cycle has elapsed will be described later.

When the control unit 206 determines that one transmission cycle has elapsed, the acquisition of all types of alarm messages has been completed based on the determination result, message identifier, and serial number received from the broadcast information receiving unit 204. It is determined whether or not. When the control unit 206 determines that acquisition of all types of alarm messages has been completed, the control unit 206 receives a notification of completion of assembly from the alarm message assembly unit 205, and stops the acquisition of the SIB 12 to the notification information reception unit 204. Instruct. A method for determining whether or not all types of alarm messages have been acquired will be described later.

The warning message display unit 207 displays the warning message received from the warning message assembly unit 205.

<Operations of base station apparatus and communication terminal apparatus>
FIG. 3 is a diagram illustrating operations of the base station device 100 and the communication terminal device 200 when the communication terminal device has successfully received all the SIBs 12. FIG. 4 is a diagram illustrating operations of the base station device 100 and the communication terminal device 200 when the communication terminal device fails to receive some of the SIBs 12. 3 and 4, the base station device 100 is denoted as “eNB”, and the communication terminal device 200 is denoted as “UE”.

First, operations of the base station apparatus 100 and the communication terminal apparatus 200 when the communication terminal apparatus has successfully received all the SIBs 12 will be described with reference to FIG.

In FIG. 3, first, the base station apparatus 100 starts distributing an alarm message (step ST301).

Also, the paging message issuing unit 104 of the base station apparatus 100 issues a paging message, and the base station apparatus 100 transmits the paging message (step ST302).

The communication terminal device 200 receives the paging message, and the paging message reception unit 203 of the communication terminal device 200 notifies the control unit 206 that the paging message has been acquired. Thereby, control section 206 of communication terminal apparatus 200 instructs broadcast information receiving section 204 to start acquisition of SIB12, and broadcast information receiving section 204 of communication terminal apparatus 200 starts acquiring an alarm message (step ST303). ).

Next, the broadcast information transmitting unit 106 of the base station device 100 generates the SIB 12 including the warning message issued by the warning message issuing unit 170, and the base station device 100 transmits the SIB 12.

For example, in the example shown in FIG. 3, four types of alarm messages 1 to 4 are transmitted by the SIB 12. A series of information is transmitted using these four types of alarm messages.

Further, in this example, the control unit 103 of the base station device 100 takes out the alarm messages from the alarm message storage unit 101 in the order of alarm message 2, alarm message 3, alarm message 4, and alarm message 1. At this time, the control unit 103 takes out an alarm message having a message identifier “1” and a serial number “1” as an alarm message 2. In addition, the control unit 103 extracts an alarm message having a message identifier “2” and a serial number “1” as the alarm message 3. Similarly, for the alarm messages 1 and 4, the control unit 103 extracts each alarm message based on the message identifier and the serial number.

Thereby, base station apparatus 100 transmits alarm message 2, alarm message 3, alarm message 4, and alarm message 1 in this order (step ST304 to step ST307). Since the base station apparatus 100 transmits in such a manner that the transmission order of each type of alarm message is the same in each transmission cycle T1, the alarm message 2, the alarm message 3, the alarm message 4, and the alarm message 1 are also transmitted after step ST307. Send in order. Here, one transmission cycle T1 is from the start of transmission of the warning message 2 to the end of transmission of the warning message 1 (step ST304 to step ST307).

The communication terminal device 200 receives the alarm message 2, the alarm message 3, the alarm message 4, and the alarm message 1 in this order (step ST308 to step ST311).

Then, base station apparatus 100 transmits alarm message 2 again (step ST312), and communication terminal apparatus 200 receives alarm message 2 again (step ST313).

At this time, the control unit 206 of the communication terminal device 200 has already acquired the warning message 2 in step ST308, so that it receives the warning message 2 again in step ST313 and recognizes that one transmission cycle T1 has elapsed. can do.

Therefore, the control unit 206 of the communication terminal device 200 instructs the notification information receiving unit 204 to stop the acquisition of the alarm message (step ST314).

Next, operations of the base station apparatus 100 and the communication terminal apparatus 200 when the communication terminal apparatus fails to receive some of the SIBs 12 will be described with reference to FIG. In FIG. 4, parts that are the same as those in FIG. 3 are given the same reference numerals, and descriptions thereof are omitted.

In the example shown in FIG. 4 as well, four types of alarm messages 1 to 4 are transmitted by the SIB 12 as in the example shown in FIG.

In this case, after step ST303, the control unit 103 of the base station apparatus 100 extracts the alarm messages from the alarm message storage unit 101 in the order of alarm message 2, alarm message 3, alarm message 4, and alarm message 1. Thereby, base station apparatus 100 transmits alarm message 2, alarm message 3, alarm message 4, and alarm message 1 in this order (step ST401 to step ST410). Since the base station apparatus 100 transmits each alarm message in the same transmission order in each transmission cycle T2, in steps ST401 to ST404 and steps ST405 to ST408, the alarm message 2, the alarm message 3, the alarm message 4, Send in the order of alarm message 1. Here, one transmission cycle T2 starts from the transmission of the warning message 2 until the transmission of the warning message 1 ends (steps ST401 to ST404, steps ST405 to ST408).

In the example shown in FIG. 4, the communication terminal apparatus 200 has successfully received each transmitted alarm message in step ST401, step ST404, and step ST407 to step ST410 (step ST411 to step ST416), but the propagation environment has deteriorated. For example, in step ST402, step ST403, step ST405, and step ST406, reception of each transmitted alarm message has failed.

In such a situation, the control unit 206 of the communication terminal apparatus 200 has the same transmission order of each type of alarm message in each of the transmission cycles T2, so after receiving the alarm message 1 in step ST412, the control unit 206 in step ST414 By receiving the alarm message 1 again, it can be recognized that one transmission cycle T2 has elapsed. The control unit 206 determines whether there is an alarm message that has failed to be acquired (step ST417), and if there is an alarm message that has failed to be received, continues to acquire the alarm message (step ST418).

Specifically, the control unit 206 acquires the warning message 2 in step ST411, acquires the warning message 1 in step ST412 and step ST414, and acquires the warning message 4 in step ST413, so in the transmission cycle T2. It is estimated that four types of alarm messages are transmitted (step ST419). Moreover, the control part 206 can recognize that the alarm message 3 is missing (step ST420). Therefore, the control unit 206 continues to acquire the alarm message until the alarm message 3 is acquired. When the message 3 is acquired (step ST416), the control unit 206 instructs to stop acquiring the alarm message (step ST421).

<Operation of communication terminal device>
FIG. 5 is a flowchart showing the operation of communication terminal apparatus 200.

In FIG. 5, first, the paging message receiving unit 203 acquires a paging message (step ST501). Thereby, the communication terminal device 200 starts acquisition of an alarm message.

The control unit 206 determines whether SIB12 information is included in the SIB1 transmitted before the SIB12 (step ST502).

When the SIB12 information is included in SIB1 (step ST502: Yes), the control unit 206 instructs the broadcast information reception unit 204 to acquire the SIB12, and the broadcast information reception unit 204 attempts to acquire the SIB12. (Step ST503).

Next, the warning message assembly unit 205 assembles the acquired warning message (step ST504).

Next, the warning message assembling unit 205 determines whether or not the warning message acquired next by the notification information receiving unit 204 has already been acquired (step ST505).

If the acquired alarm message has not yet been acquired (step ST505: No), the control unit 206 returns the process to step ST502.

On the other hand, when the acquired warning message has already been acquired (step ST505: Yes), the control unit 206 determines whether there is a missing warning message based on the determination result received from the notification information receiving unit 204. Is determined (step ST506).

If there is a missing alarm message (step ST506: Yes), the control unit 206 causes the notification information receiving unit 204 to continue acquiring the SIB 12 in order to acquire the missing alarm message. Thereby, the notification information receiving unit 204 continues to acquire the SIB 12. Then, when the acquisition of the missing alarm message is completed, the control unit 206 assembles an alarm message from the missing alarm message and the already acquired alarm message (step ST507).

Next, the control unit 206 passes the assembled warning message to the upper layer (step ST508) and ends the process. In the upper layer, for example, it is determined whether or not to display on the terminal screen in accordance with the type of alarm message that has been assembled and the setting of the terminal.

On the other hand, when there is no information of SIB12 in step ST502 (step ST502: No), or when there is no missing alarm message in step ST506 (step ST506: No), the control unit 206 displays an alarm message. The assembled warning message is acquired from the assembling unit 205, the acquired warning message is passed to the upper layer (step ST508), and the process ends.

<Effects of the present embodiment>
In the present embodiment, in each transmission cycle, whether or not reception of all types of alarm messages distributed has been completed by making the transmission order of each type of alarm message in the plurality of types of alarm messages to be transmitted the same. It can be determined on the receiving side. Thereby, the consumption of the battery on the receiving side can be suppressed by stopping the acquisition of the warning message after acquiring all types of warning messages on the receiving side.

(Embodiment 2)
<Configuration of base station device>
FIG. 6 is a block diagram showing a configuration of base station apparatus 600 according to Embodiment 2 of the present invention. In FIG. 6, the alarm message distribution device 150 and the exchange station device 160 are also shown together with the base station device 600.

A base station apparatus 600 illustrated in FIG. 6 adds a flag assigning unit 602 to the base station apparatus 100 according to Embodiment 1 illustrated in FIG. 601 and an alarm message issuing unit 670 instead of the alarm message issuing unit 170. In FIG. 6, parts having the same configuration as in FIG.

The alarm message issuing unit 670 has an alarm message storage unit 101, an alarm message dividing unit 105, and a control unit 601, and issues an alarm message.

The control unit 601 requests the paging message issuing unit 104 to issue a paging message when notifying new information. The control unit 601 takes out the alarm messages stored in the alarm message storage unit 101 one by one. The control unit 601 determines whether to divide the alarm message according to the size of the extracted alarm message. When it is determined that the alarm message is to be divided, the control unit 601 outputs the extracted alarm message to the alarm message dividing unit 105. When the control unit 601 determines not to divide the alarm message, the control unit 601 outputs the extracted alarm message to the notification information transmission unit 106.

When the alarm message is not divided, the control unit 601 outputs the alarm message extracted first in each transmission cycle to the flag adding unit 602. When the alarm message is divided, the control unit 601 outputs the extracted alarm message to the alarm message dividing unit 105. At that time, the control unit 601 instructs the alarm message dividing unit 105 to add a flag to the alarm message that is first extracted in each transmission cycle.

The control unit 601 repeatedly takes out the alarm message stored in the alarm message storage unit 101 and repeats the above processing.

The paging message issuing unit 104 outputs a paging message in which a flag (cmas-Indication) indicating delivery of an alarm message is set to the transmission unit 107 in response to a request from the control unit 601.

The warning message dividing unit 105 divides the warning message received from the control unit 601 and outputs the divided warning message to the notification information transmitting unit 106. When the warning message dividing unit 105 receives an instruction to give a flag from the control unit 601, the warning message dividing unit 105 outputs the first warning message among the divided warning messages to the flag adding unit 602, and transmits the remaining warning messages to the notification information. To the unit 106. In the following description of the present embodiment, both the undivided alarm message and the divided alarm message are simply referred to as “alarm messages”.

The flag adding unit 602 adds a flag to the alarm message received from the control unit 601 or the alarm message received from the alarm message dividing unit 105. This flag indicates that the alarm message is transmitted first for each transmission cycle. The communication terminal device 200 knows that this flag indicates an alarm message transmitted first in each transmission cycle. The flag assignment unit 602 outputs the warning message with the flag to the notification information transmission unit 106.

The notification information transmitting unit 106 generates the SIB 12 including the alarm message received from the control unit 601, the alarm message received from the alarm message dividing unit 105, or the alarm message received from the flag assigning unit 602, and the generated SIB 12 is transmitted to the transmission unit. It outputs to 107.

In the present embodiment, the communication terminal apparatus determines whether or not the notification information receiving unit 204 has acquired an alarm message with a flag, and the control unit 206 replaces the message identifier and serial number with each other. Since the configuration is the same as that of FIG. 2 except that it is determined whether or not one transmission cycle has passed based on the determination result of the presence or absence of the flag acquired from the broadcast information receiving unit 204, the description thereof is omitted.

<Operations of base station apparatus and communication terminal apparatus>
FIG. 7 is a diagram illustrating operations of the base station device 600 and the communication terminal device 200. In addition, in FIG. 7, the base station apparatus 600 is described as eNB, and the communication terminal apparatus 200 is described as UE. The communication terminal device 200 will be described using the reference numerals in FIG. In FIG. 7, the same reference numerals are given to the same operations as those in FIG. 3, and the description thereof is omitted.

In the case of FIG. 7, four types of alarm messages, alarm message 1 to alarm message 4, are transmitted using SIB12.

The broadcast information transmitting unit 106 of the base station device 600 generates the SIB 12 including the warning message issued by the warning message issuing unit 670, and the base station device 600 transmits the SIB 12.

The control unit 601 of the base station apparatus 600 takes out alarm messages from the alarm message storage unit 101 in the order of alarm message 2, alarm message 4, alarm message 1, alarm message 2,. Thereby, base station apparatus 600 transmits alarm messages in the order of alarm message 2, alarm message 4, alarm message 1, alarm message 2,... (Steps ST701 to ST710).

Here, the transmission of the warning message 4 is started in step ST702 until the transmission of the message 3 is completed in step ST705, and the transmission of the warning message 2 is started in step ST706. The period until the end is one transmission cycle T3.

The notification information receiving unit 204 of the communication terminal device 200 tries to acquire the alarm message transmitted in steps ST701 to ST705, and acquires the alarm message 2, the alarm message 4, the alarm message 1, and the alarm message 2 (step ST711 to step ST711). Step ST714). At this time, the control unit 206 of the communication terminal device 200 recognizes that the warning message 4 is the first warning message in the transmission cycle T3 by adding a flag to the warning message 4 acquired in step ST712. Can do.

Subsequently, the notification information receiving unit 204 of the communication terminal device 200 tries to acquire the alarm message transmitted in step ST706 and succeeds in acquiring the alarm message 2 (step ST715). At this time, the communication terminal device 200 control unit 206 recognizes that the alarm message 2 is the first alarm message in the next transmission cycle T3 by adding a flag to the alarm message 2 acquired in step ST715. be able to. Thus, the control unit 206 can recognize that one transmission cycle T3 has elapsed since the alarm message 4 was acquired in step ST712.

However, since there is a missing alarm message (alarm message 3 transmitted in step ST705) during the elapse of one transmission cycle T3 from step ST712, the control unit 206 acquires the alarm message to the notification information reception unit 204. Let it continue.

Subsequently, the notification information receiving unit 204 attempts to acquire the alarm message transmitted in steps ST707 to ST710, and sequentially acquires the alarm message 3, alarm message 1, alarm message 4, and alarm message 3 in this order (step ST716). To Step ST719).

At this time, the control unit 206 can recognize that the warning message 3 is the first warning message in the next transmission cycle T3 by adding a flag to the warning message 3 acquired in step ST719. Accordingly, the control unit 206 can recognize that one transmission cycle T3 has elapsed since the alarm message 2 was acquired in step ST712.

The control unit 206 can recognize that all types of alarm messages have been acquired since there is no alarm message that is missing while one transmission cycle T3 has elapsed since step ST715.

Therefore, the control unit 206 instructs the broadcast information receiving unit 204 to stop acquiring the SIB 12 (step ST720).

<Effects of the present embodiment>
According to the present embodiment, the reception side determines whether or not reception of all types of distributed alarm messages has been completed by giving a flag to the alarm message transmitted at the beginning of each transmission cycle on the transmission side. Therefore, it is possible to suppress battery consumption on the receiving side.

Further, according to the present embodiment, since the transmission cycle is notified only by a very simple process of adding a flag, it is possible to suppress an increase in processing load accompanying notification of the transmission cycle.

(Embodiment 3)
<Configuration of base station device>
FIG. 8 is a block diagram showing a configuration of base station apparatus 800 according to Embodiment 3 of the present invention.

A base station apparatus 800 illustrated in FIG. 8 adds a dummy alarm message generation unit 802 to the base station apparatus 100 according to Embodiment 1 illustrated in FIG. A control unit 801 is included. In FIG. 8, parts having the same configuration as in FIG.

The warning message issuing unit 870 includes the warning message storage unit 101, the warning message dividing unit 105, and the control unit 801, and issues a warning message.

The control unit 801 requests the paging message issuing unit 104 to issue a paging message when notifying new information. The control unit 801 extracts alarm messages stored in the alarm message storage unit 101 one by one. The control unit 801 determines whether to divide the alarm message according to the size of the extracted alarm message. When it is determined that the warning message is to be divided, the control unit 801 outputs the extracted warning message to the warning message dividing unit 105. When it is determined that the warning message is not divided, the control unit 801 outputs the extracted warning message to the notification information transmission unit 106.

The control unit 801 instructs the dummy alarm message generation unit 802 to output a dummy alarm message before outputting the first extracted alarm message every transmission cycle.

The control unit 801 repeatedly extracts the alarm message stored in the alarm message storage unit 101 and repeats the above processing.

In response to a request from the control unit 801, the paging message issuing unit 104 outputs a paging message in which a flag (cmas-Indication) indicating delivery of an alarm message is set to the transmission unit 107.

The warning message dividing unit 105 divides the warning message received from the control unit 801 and outputs the divided warning message to the notification information transmitting unit 106. In the following description of the present embodiment, both the undivided alarm message and the divided alarm message are simply referred to as “alarm messages”.

The dummy alarm message generation unit 802 generates a dummy alarm message. The dummy alarm message generation unit 802 outputs the generated dummy alarm message to the notification information transmission unit 106 in accordance with an instruction from the control unit 801. This dummy alarm message has the same format as alarm message 1 to alarm message 4. Here, the dummy alarm message indicates the head of each transmission cycle.

The notification information transmitting unit 106 generates the SIB 12 including the alarm message received from the control unit 801, the alarm message received from the alarm message dividing unit 105, or the dummy alarm message received from the dummy alarm message generating unit 802. The broadcast information transmission unit 106 outputs the generated SIB 12 to the transmission unit 107.

In the present embodiment, the communication terminal apparatus determines whether or not the dummy alarm message has been acquired in the notification information reception unit 204, and receives the notification information instead of the message identifier and serial number in the control unit 206. Since it is the same structure as FIG. 2 except determining whether one transmission cycle passed based on the presence or absence of the acquisition of the dummy alarm message acquired from the part 204, the description is abbreviate | omitted.

<Operations of base station apparatus and communication terminal apparatus>
FIG. 9 is a diagram illustrating operations of base station apparatus 800 and communication terminal apparatus 200. In addition, in FIG. 9, the base station apparatus 800 is described as eNB and the communication terminal apparatus 200 is expressed as UE. The communication terminal device 200 will be described using the reference numerals in FIG. In FIG. 9, the same reference numerals are given to the same operations as those in FIG. 3, and the description thereof is omitted.

In the case of FIG. 9, four types of alarm messages 1 to 4 and a dummy alarm message are transmitted using the SIB 12.

The control unit 801 of the base station device 800 takes out alarm messages from the alarm message storage unit 101 in the order of alarm message 2, alarm message 4, alarm message 1, alarm message 2,. At this time, the control unit 801 instructs the dummy alarm message generation unit 802 to output a dummy alarm message before outputting the extracted alarm messages. Thereby, base station apparatus 800 transmits alarm message 2, dummy alarm message, alarm message 4, alarm message 1, alarm message 2,... In this order (step ST901 to step ST912).

Here, the transmission of the dummy alarm message is started in step ST902 until the transmission of message 3 is completed in step ST906, and the transmission of the dummy alarm message is started in step ST907, and then the transmission of message 4 is performed in step ST911. The period until the end is one transmission cycle T4.

The notification information receiving unit 204 of the communication terminal device 200 attempts to acquire the alarm message transmitted in steps ST901 to ST906, and acquires the alarm message 2, the dummy alarm message, the alarm message 4, the alarm message 1, and the alarm message 2. (Step ST913 to Step ST917). At this time, the control unit 206 of the communication terminal apparatus 200 can recognize that the dummy alarm message is the head of the transmission cycle T4 by acquiring the dummy alarm message in step ST914.

Subsequently, the notification information receiving unit 204 tries to acquire the alarm message transmitted in step ST907 and succeeds in acquiring the next dummy alarm message (step ST918). At this time, the control unit 206 can recognize that this dummy alarm message is the head of the next transmission cycle T4 by acquiring the next dummy alarm message.

However, since there is a missing alarm message (alarm message 3 transmitted in step ST906) while one transmission cycle T4 elapses from step ST914, the control unit 206 acquires the alarm message to the notification information receiving unit 204. Let it continue.

Subsequently, the notification information receiving unit 204 attempts to acquire the alarm message transmitted in steps ST908 to ST912, and sequentially acquires the alarm message 2, alarm message 3, alarm message 1, alarm message 4, and dummy alarm message in this order. (Step ST919 to Step ST923).

At this time, the control unit 206 can recognize that the dummy alarm message is the head of the next transmission cycle T4 by acquiring the dummy alarm message in step ST923.

The control unit 206 can recognize that all types of alarm messages have been acquired since there is no alarm message that is missing while one transmission cycle T4 has elapsed since step ST918.

Therefore, the control unit 206 instructs the broadcast information receiving unit 204 to stop acquiring the SIB 12 (step ST924).

<Effects of the present embodiment>
According to the present embodiment, the transmission side transmits a dummy alarm message before transmitting an alarm message in each transmission cycle, thereby determining whether or not acquisition of all types of distributed alarm messages has been completed. Since the determination can be made on the receiving side, the battery consumption on the receiving side can be suppressed.

In addition, according to the present embodiment, since a dummy alarm message having the same format as the alarm message is transmitted, a change in the system accompanying notification of the transmission cycle can be minimized, and the system is built. An increase in manufacturing cost can be suppressed.

(Embodiment 4)
<Configuration of base station device>
FIG. 10 is a block diagram showing a configuration of base station apparatus 1000 according to Embodiment 4 of the present invention.

A base station apparatus 1000 illustrated in FIG. 10 adds a list storage unit 1002 to the base station apparatus 100 according to Embodiment 1 illustrated in FIG. 1001. In FIG. 10, parts having the same configuration as in FIG.

The alarm message issuing unit 1070 includes an alarm message storage unit 101, an alarm message dividing unit 105, and a control unit 1001, and issues an alarm message.

The control unit 1001 requests the paging message issuing unit 104 to issue a paging message when distributing new information. The control unit 1001 extracts alarm messages stored in the alarm message storage unit 101 one by one. The control unit 1001 determines whether to divide the alarm message according to the size of the extracted alarm message. When it is determined that the alarm message is to be divided, the control unit 1001 outputs the extracted alarm message to the alarm message dividing unit 105. When it is determined that the warning message is not divided, the control unit 1001 outputs the extracted warning message to the notification information transmission unit 106.

The control unit 1001 extracts a list from the list storage unit 1002 every time an alarm message is extracted from the alarm message storage unit 101. When the warning message is not divided, the control unit 1001 gives the extracted list to the warning message, and outputs the warning message with the list to the notification information transmitting unit 106. When dividing the warning message, the control unit 1001 outputs the list taken out together with the warning message to the warning message dividing unit 105.

The control unit 1001 repeatedly extracts the alarm message stored in the alarm message storage unit 101 and repeats the above processing.

The paging message issuing unit 104 outputs a paging message in which a flag (cmas-Indication) indicating delivery of an alarm message is set to the transmission unit 107 in response to a request from the control unit 1001.

The list storage unit 1002 stores in advance a list describing all types of alarm messages to be transmitted.

The alarm message dividing unit 105 divides the alarm message received from the control unit 1001 and outputs it to the notification information transmitting unit 106. At this time, the warning message dividing unit 105 gives the list received from the control unit 1001 to each divided warning message. In the following description of the present embodiment, both the undivided alarm message and the divided alarm message are simply referred to as “alarm messages”.

The notification information transmitting unit 106 generates the SIB 12 including the alarm message received from the control unit 1001 or the alarm message received from the alarm message dividing unit 105, and outputs the generated SIB 12 to the transmitting unit 107.

<Operations of base station apparatus and communication terminal apparatus>
FIG. 11 is a diagram illustrating operations of the base station apparatus 1000 and the communication terminal apparatus 200. In addition, in FIG. 11, the base station apparatus 1000 is described as eNB and the communication terminal apparatus 200 is described as UE. The communication terminal device 200 will be described using the reference numerals in FIG. Further, in FIG. 11, the same reference numerals are given to the same operations as those in FIG. 3, and the description thereof is omitted.

In the case of FIG. 11, four types of alarm messages 1 to 4 are transmitted using the SIB 12.

The control unit 1001 of the base station apparatus 1000 extracts the alarm messages from the alarm message storage unit 101 in the order of alarm message 2, alarm message 3, alarm message 4, alarm message 1,. Thereby, base station apparatus 1000 transmits alarm message 2, alarm message 3, alarm message 4, alarm message 1,... In this order (step ST1101 to step ST1105).

Here, one transmission cycle T5 is from the start of transmission of alarm message 2 in step ST1101 to the end of transmission of message 1 in step ST1104.

The notification information receiving unit 204 of the communication terminal device 200 tries to acquire the alarm message transmitted in steps ST1101 to ST1105, and acquires the alarm message 2, the alarm message 3, the alarm message 4, the alarm message 1, and the alarm message 2. (Step ST1106 to Step ST1110). At this time, the notification information receiving unit 204 acquires a list given to each alarm message. Therefore, the control unit 206 of the communication terminal apparatus 200 can recognize all types of alarm messages transmitted from the base station apparatus 1000 when the alarm message 2 is acquired in step ST1106.

The control unit 206 can recognize that all types of alarm messages have been acquired in step ST1109 by checking the acquired list (steps ST1111 and ST1112).

Thereby, the control unit 206 instructs the broadcast information receiving unit 204 to stop acquiring the SIB 12 (step ST1113).

<Effects of the present embodiment>
According to the present embodiment, it is determined whether or not acquisition of all the transmitted alarm messages has been completed by giving a list describing all types of alarm messages to be transmitted to each alarm message to be transmitted. Since the determination can be made on the receiving side, the battery consumption on the receiving side can be suppressed.

In addition, according to the present embodiment, since a list is given to all alarm messages, even if acquisition of some alarm messages fails, whether or not acquisition of all types of alarm messages has been completed is received. Judgment can be made reliably on the side.

(Embodiment 5)
<Operations of base station apparatus and communication terminal apparatus>
FIG. 12 is a diagram illustrating operations of base station apparatus 100 and communication terminal apparatus 200 according to Embodiment 5 of the present invention. In the present embodiment, base station apparatus 100 has the same configuration as in FIG. 1, and communication terminal apparatus 200 has the same configuration as in FIG. Further, the base station apparatus 100 is described using the reference numerals in FIG. 1, and the communication terminal apparatus 200 is described using the reference numerals in FIG. Also, in FIG. 12, parts that are the same as those in FIG.

After the acquisition of the SIB 12 is stopped in step ST314, if the addition or update is made to the series of information that has been broadcast so far (step ST1201), the control unit 103 of the base station apparatus 100 issues a paging message. Request to the paging message issuing unit 104. Thereby, paging message issuing section 104 issues a paging message, and base station apparatus 100 transmits the paging message (step ST1202).

The communication terminal device 200 receives the paging message, and the paging message reception unit 203 of the communication terminal device 200 notifies the control unit 206 of the communication terminal device 200 that the paging message has been acquired. Thereby, the control part 206 instruct | indicates the start of acquisition of SIB12 with respect to the alerting | reporting information receiving part 204 which stopped acquisition of SIB12 in step ST314, and the alerting | reporting information receiving part 204 starts acquisition of SIB12 again ( Step ST1203).

Next, base station apparatus 100 sequentially transmits alarm message 3, alarm message 5,... (Step ST1204 and step ST1205). Here, the warning message 5 is an added or updated warning message.

Then, communication terminal apparatus 200 sequentially receives alarm message 3 and alarm message 5 transmitted in steps ST1204 and ST1205 (steps ST1206 and ST1207). Thereby, the communication terminal device 200 can acquire the added or updated warning message 5 in step ST1207.

<Effects of the present embodiment>
According to the present embodiment, in addition to the effects of the above-described first embodiment, even when the communication terminal apparatus has stopped acquiring the SIB 12, if the information is added or updated, the SIB 12 Since all the information can be acquired with certainty.

<Modification of the present embodiment>
In the present embodiment, the present invention is applied to the base station apparatus and the communication terminal apparatus according to the first embodiment. However, the present invention is not limited to this, and the base station apparatus and the communication terminal apparatus according to the second to fourth embodiments are also applied. Can be applied.

<Modification common to all embodiments>
In the first to fifth embodiments described above, the case where the alarm message is transmitted has been described. However, the present invention is not limited to this, and can also be applied to the case where an arbitrary notification message other than the alarm message is transmitted.

The disclosure of the specification, drawings and abstract contained in the Japanese application of Japanese Patent Application No. 2011-176866 filed on August 12, 2011 is incorporated herein by reference.

The base station apparatus, communication terminal apparatus, notification method, and reception method according to the present invention are suitable for application to CMAS standardized by 3GPP, for example.

DESCRIPTION OF SYMBOLS 100 Base station apparatus 101 Alarm message storage part 102 Adjustment part 103 Control part 104 Paging message issuing part 105 Alarm message division | segmentation part 106 Notification information transmission part 107 Transmission part 108 Antenna 150 Alarm message delivery apparatus 160 Switching station apparatus 170 Alarm message issuing part

Claims (11)

A base station device that transmits a series of information using a plurality of types of notification messages,
Transmitting means for repeatedly transmitting the plurality of types of notification messages at a predetermined transmission cycle;
Control means for controlling the transmission order such that the transmission order of each type of notification message in the plurality of types of notification messages transmitted by the transmission means is the same in each of the transmission cycles;
A base station apparatus comprising: A base station device that sequentially transmits a series of information using a plurality of types of notification messages,
Transmitting means for repeatedly transmitting the plurality of types of notification messages at a predetermined transmission period and transmitting period information relating to the transmission period;
Control means for controlling transmission of the period information in the transmission means;
A base station apparatus comprising: The control means includes
In each of the transmission periods, the transmission unit first transmits the notification message by adding the period information indicating the notification message transmitted first to the notification message transmitted first. Controlling the transmission means so that the period information is transmitted together with the notification message;
The base station apparatus according to claim 2. The control means includes
In each of the transmission cycles, the transmission unit is controlled so that the cycle information indicating the head of the transmission cycle is transmitted before the transmission unit transmits the plurality of types of notification messages.
The base station apparatus according to claim 2. The control means includes
In each of the transmission cycles, the transmission means is controlled so that a dummy notification message is transmitted as the period information in the transmission means.
The base station apparatus according to claim 4. The control means includes
The transmission means is controlled so that the periodic information is transmitted together with each notification message in the transmission means by giving the periodic information notifying the type of the notification message to be transmitted to each notification message.
The base station apparatus according to claim 2. The transmission means includes
When a paging message that prompts a communication partner to acquire a notification message is transmitted, and when the series of information is added or updated during transmission of the plurality of types of notification messages, the addition or update is performed. Send a new notification message to notify the updated information,
The control means includes
Controlling the transmission means such that the paging message that prompts the transmission means to acquire the new notification message is transmitted;
The base station apparatus in any one of Claims 1-6. When a plurality of types of notification messages are repeatedly transmitted at a predetermined transmission cycle, the plurality of types of notification messages transmitted so that the transmission order of each type of notification message is the same in each of the transmission cycles are received. A communication terminal device for acquiring a series of information included in the plurality of types of notification messages,
Receiving means for receiving the plurality of types of notification messages;
Recognizing the transmission cycle based on the reception order of each type of notification message in the plurality of types of notification messages received by the receiving means, and receiving the plurality of types of notification messages transmitted within the recognized transmission cycle Control means for controlling the receiving means to stop receiving the plurality of types of notification messages in the receiving means when
A communication terminal device comprising: A notification method in a base station apparatus that sequentially transmits a series of information using a plurality of types of notification messages,
Sequentially transmitting the plurality of types of notification messages during a predetermined transmission period;
Controlling the transmission order so that the transmission order of each type of notification message in the plurality of types of notification messages to be transmitted is the same in each of the transmission periods;
A notification method comprising: A notification method in a base station apparatus that sequentially transmits a series of information using a plurality of types of notification messages,
Transmitting the plurality of types of notification messages sequentially during a predetermined transmission period, and transmitting period information regarding the transmission period;
Controlling the transmission of the period information;
A notification method comprising: When a plurality of types of notification messages are repeatedly transmitted in a predetermined transmission cycle, the plurality of types of notification messages transmitted so that the transmission order of each type of notification message is the same in each of the transmission cycles are received. A receiving method for acquiring a series of information included in the plurality of types of notification messages,
Receiving the plurality of types of notification messages;
When the transmission cycle is recognized based on the reception order of each type of notification message in the received plurality of types of notification messages, and the reception of the plurality of types of notification messages transmitted within the recognized transmission cycle is completed And controlling the receiving step to stop receiving the plurality of types of notification messages;
A receiving method comprising:

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