JP2008011061A - Base station apparatus and communications system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a technology capable of transmitting information, associated with a disaster to a mobile terminal, while suppressing the load imposed on a telephone network that conducts connection of a channel to the mobile terminal. <P>SOLUTION: Disaster prevention base stations 22A to 22C transmit a disaster prevention wireless signal, representing information relating to the disaster. Upon the receipt of the disaster prevention wireless signal, a base station 32A converts the received disaster prevention wireless signal into a wireless signal receivable by a mobile phone (mobile terminal) 10 and transmits the wireless signal. When the wireless signal is received, the mobile phone 10A located within a cell, the wireless communication of which the base station 32A covers, analyzes the wireless signal received and displays the information relating to the disaster. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a technique for informing information related to a disaster.

As a system for notifying a person in a disaster occurrence location that a disaster has occurred, for example, there is a system disclosed in Patent Document 1. In the system disclosed in Patent Document 1, a disaster prevention center for a disaster prevention wireless system that transmits disaster-related information wirelessly and a mobile phone operator center for a wireless communication system that provides voice communication services to the owner of the mobile phone are connected. If a disaster occurs, the disaster prevention center sends information related to the disaster to the mobile phone operator center. When the mobile phone provider center receives information about the disaster from the disaster prevention center, the mobile phone provider center sends the received information to the mobile phone control station that controls the mobile phone base station. When receiving the information on the disaster, the mobile phone control station specifies the disaster area from the received information, and specifies the mobile phone in the specified disaster area with reference to the database storing the location of the mobile phone. Then, a message about disaster is sent to the specified mobile phone. According to this system, it is possible to notify disaster information to a person in the disaster occurrence area.
JP 2001-36645 A

  By the way, when a disaster occurs, in order to confirm the safety of the person in the disaster occurrence area, the number of line connection requests to the mobile phone in the disaster occurrence area increases, and a control device or wireless communication that controls the base station of the mobile telephone The load on the database storing the positions of the exchanges and mobile phones constituting the system increases. In the system described in Patent Document 1, in such a state that a high load is applied to the wireless communication system, further, reception of information from the disaster prevention center, identification of the mobile phone in the disaster occurrence area, and the specified mobile phone Information is transmitted to the wireless communication system, and there is a possibility that the information on the disaster and the connection of the line may not be reliably connected due to a load on the wireless communication system.

  The present invention has been made under the above-described background, and its purpose is to be able to send disaster-related information to a mobile terminal while suppressing the load on the telephone network for connecting to the mobile terminal. There is to do.

  In order to solve the above-described problems, the present invention relates to a receiving unit that receives a radio signal in a first frequency band, and information that is represented by the radio signal received by the receiving unit using a radio signal in the second frequency band. A transmission means for transmitting to the terminal device, a device for communicating with the terminal device by a radio signal in the second frequency band, and a device for relaying the communication performed between the terminal device and the terminal device. Provided is a base station apparatus having communication means and relay means for relaying communication performed between the terminal apparatus and an apparatus that is a communication partner of the terminal apparatus.

In this aspect, the relay unit may stop relaying communication when a radio signal in the first frequency band is received by the receiving unit.
In addition, when the relay is stopped for the communication being relayed, the relay unit may notify the device serving as a communication partner of the mobile terminal that the communication relay is stopped.
Further, when the radio signal is received by the receiving unit when the communication is being relayed by the relay unit, the relay unit may continue to relay the communication and transmit by the transmitting unit. .

  According to the present invention, a first receiving means for receiving a radio signal in the first frequency band and information represented by the radio signal received by the first receiving means are transmitted to the terminal device by the radio signal in the second frequency band. Communication with the terminal device using a radio signal in the second frequency band, and communication with a device that relays communication performed between the terminal device and the terminal device. A base station device having relay means for relaying communications performed between the terminal device and a device that is a communication partner of the terminal device, and a radio signal in the second frequency band transmitted from the transmission means. There is provided a communication system having a second receiving means for receiving and a terminal device having notifying means for notifying information represented by a radio signal received by the second receiving means.

[Configuration of the embodiment]
FIG. 1 is a diagram showing an overall configuration of a system according to an embodiment of the present invention. The disaster prevention wireless system 20 possessed by a local government such as a prefecture or a municipality is a system that provides information on disasters occurring in the prefecture or municipality to those who are within the communication area of the disaster prevention wireless system 20. The central device 21 is a computer device that generates various types of information related to disasters and processes the generated various types of information in accordance with user operations. The central apparatus 21 is connected to the disaster prevention radio base stations 22A to 22C, and transmits various information related to disasters to the disaster prevention radio base stations 22A to 22C. The disaster prevention radio base stations 22 </ b> A to 22 </ b> C are installed at predetermined locations in the prefecture and municipalities, and convert various information related to disasters transmitted from the central device 21 into radio signals and transmit them.
The transmitted radio signal is received by the terminal device 23 that can receive the radio signal. The terminal device 23 receives the radio signal transmitted from the disaster prevention radio base station, and displays various information represented by the received radio signal. In addition, the frequency band of the disaster prevention radio signal output by each disaster prevention radio base station is a frequency band different from the frequency band used by the base stations 32A to 32C of the mobile telephone system 30 for radio communication. In the disaster prevention radio system 20, a large number of disaster prevention radio base stations are connected to the central device 21, but only three disaster prevention radio base stations are shown in FIG. 1 in order to prevent the drawing from becoming complicated.

  The fixed telephone network 40 is a communication network that provides a voice call service to a subscriber who has signed a subscription with a carrier that operates the fixed telephone network 40. The fixed telephone network 40 is connected to a fixed telephone (not shown) installed in a home or office and a mobile telephone network 31.

  The mobile phone system 30 is a system that provides a voice call service and a data communication service to a subscriber who has signed a subscription with a communication carrier that operates the mobile phone system 30. The mobile phone system 30 includes base stations (base station devices) 32A to 32C that perform wireless communication with the mobile phone 10. The mobile telephone system 30 includes a radio network controller (not shown) connected to the base station and the exchange to control the base station, an exchange (not shown) connected to the radio network controller, the exchange and the fixed telephone network 40. And a gateway server device (not shown) for connecting the gateway exchange and the Internet 50 to a mobile telephone network 31. The mobile telephone system 30 performs voice communication between mobile telephones in the wireless communication areas of the base stations 32A to 32C and between the mobile telephone and the fixed telephone via the mobile telephone network 31 and the fixed telephone network 40. Voice communication, and data communication performed between the mobile phone and various devices connected to the Internet 50 via the mobile telephone network 31 and the Internet 50 are relayed. In the mobile telephone system 30, many base stations are connected to the mobile telephone network 31, but only three base stations are shown in FIG. 1 in order to prevent the drawing from becoming complicated. In addition, the cells that cover the communication of each base station are adjacent to each other, and the frequency band used when each base station performs radio communication is a frequency band that is different for each base station. Since the configurations of the three base stations are the same, the base station 32 is abbreviated when it is not necessary to distinguish each base station.

  FIG. 2 is a block diagram showing a hardware configuration of the base station 32. As shown in FIG. 2, each unit of the base station 32 is connected to a bus 301 and exchanges various information and data via the bus 301. The first communication unit 307 includes an antenna 307A, and performs wireless communication with the mobile phone 10 via the antenna 307A. The 2nd communication part 308 is provided with the antenna 308A, and receives the disaster prevention radio signal which the disaster prevention radio base stations 22A-22C of the disaster prevention radio system 20 transmit via the antenna 308A. The wired communication unit 309 is connected to the wireless network control device of the mobile telephone network 31, and exchanges data related to voice communication and data related to data communication with the wireless network control device. The storage unit 305 includes a nonvolatile memory and stores various control data necessary for operating the base station 32. A ROM (Read Only Memory) 303 stores a control program for controlling each unit of the base station 32. A CPU (Central Processing Unit) 302 reads a control program from the ROM 303 and executes the read program using a RAM (Random Access Memory) 304 as a work area. When the control program is executed by the CPU 302, each part of the base station 32 is controlled according to the control program, and the base station 32 operates.

  The cellular phones (terminal devices) 10 </ b> A to 10 </ b> C perform voice communications with other cellular phones and fixed phones via the mobile phone system 30, and perform data communications via the mobile phone system 30 to send and receive e-mails. And a function for acquiring and displaying a Web page from the Internet 50. In addition, the mobile phones 10A to 10C have a function of receiving information related to disasters transmitted from the base stations 32A to 32C. In the mobile phone system 30, a large number of mobile phones perform radio communication with the base station. However, in order to prevent the drawing from becoming complicated, only three mobile phones are shown in FIG. Also, since the three mobile phones have the same configuration, they are abbreviated as mobile phones 10 when it is not necessary to distinguish each mobile phone.

  FIG. 3 is a block diagram showing a hardware configuration of the mobile phone 10. As shown in FIG. 3, each unit of the mobile phone 10 is connected to the bus 101, and exchanges various information and data via the bus 101. The operation unit 106 includes a power key used when turning on / off the power, a start key used when making a call or receiving a call, a numeric keypad, and an arrow used when operating a menu screen. Various keys for operating the mobile phone 10 such as keys are provided. When the user operates these various keys, various instructions are input to the mobile phone 10 and various settings of the mobile phone are performed.

  The communication unit 108 functions as a communication interface for performing voice communication and data communication, and performs wireless communication with the base station of the mobile telephone system 30 via the antenna 108A under the control of the CPU 102. The communication unit 108 converts an audio signal output from the audio processing unit 112 (to be described later) into a radio signal and transmits the radio signal to the base station of the mobile telephone system 30, while receiving and receiving the radio signal transmitted from the base station. If the signal represents a sound, the signal representing the sound is sent to the sound processing unit 112.

The audio processing unit 112 includes a microphone and a speaker (both not shown). The audio processing unit 112 outputs an audio signal representing the audio input to the microphone to the communication unit 108, and outputs the audio represented by the signal output from the communication unit 108 from the speaker.
The display unit 107 includes a liquid crystal display with a backlight, and displays characters, a graphic screen, various menu screens for operating the mobile phone 10, and the like under the control of the CPU 102.

  The storage unit 105 includes a nonvolatile memory, and stores various control data necessary for operating the mobile phone 10, various data such as a telephone number and an e-mail address stored by a user operation, and the like. To do. The ROM 103 stores a control program for controlling each part of the mobile phone 10. The CPU 102 reads a control program from the ROM 103 and executes the read control program using the RAM 104 as a work area. When the control program is executed by the CPU 102, each part of the mobile phone 10 is controlled according to the control program and the mobile phone 10 operates.

[Operation of the embodiment]
Next, the operation of this embodiment will be described. In the following description, mobile phone 10A is located in a cell where base station 32A covers wireless communication, mobile phone 10B is located in a cell where base station 32B covers wireless communication, and mobile phone 10C is An operation when the station 32C is located in a cell that covers wireless communication will be described as an example.
[Standby operation]
First, an operation when the mobile phone 10 is turned on and the mobile phone 10 is in a standby state in which neither voice communication nor data communication is performed will be described.

  First, in a municipality where the disaster prevention radio system 20 is operated, for example, when a large earthquake occurs, the central device 21 is operated, and information indicating a message notifying the occurrence of the earthquake and a message for calling attention to the disaster are displayed. Information is generated. Then, the central device 21 is operated, and the generated information is sent from the central device 21 to the disaster prevention radio base stations 22A to 22C. When each disaster prevention radio base station receives the information sent from the central device 21, it converts the received information into a disaster prevention radio signal of a predetermined frequency band and transmits it.

  Here, when the base station 32A and the base station 32B are within the range where the disaster prevention radio signal transmitted from the disaster prevention radio base station 22A can reach, the base station 32A, 32B transmits the disaster prevention radio signal via the antenna 308A. 2 is received by the communication unit 308. When the second communication unit 308 receives the disaster prevention radio signal, the second communication unit 308 converts information represented by the received disaster prevention radio signal (a message notifying the occurrence of an earthquake and a message for calling attention to the disaster) into digital data (FIG. 4: step SA1). ).

  Next, the converted digital data is sent to the CPU 302. When the CPU 302 receives the digital data, the CPU 302 determines whether line connection is performed for voice communication or data communication. Here, since mobile phone 10A is on standby and no line connection is made (step SA2; NO), CPU 302 sends the digital data received from second communication unit 308 to first communication unit 307. Upon receiving the transmitted digital data, the first communication unit 307 converts the received digital data into a radio signal and transmits it from the antenna 307A (step SA3). When digital data is converted into a radio signal and transmitted, for example, a downlink common channel from the base station 32 to the mobile phone 10 is used, such as a channel used for transmitting broadcast information. Transmission is performed.

  The radio signal transmitted from the base station 32A is received by the communication unit 108 via the antenna 108A of the mobile phone 10A. When the communication unit 108 receives a radio signal representing information related to a disaster, the communication unit 108 converts information represented by the received radio signal (a message notifying of the occurrence of an earthquake and a message for calling attention to a disaster) into digital data (FIG. 5: step). (SB1; YES), the converted digital data is sent to the CPU. When the CPU 102 receives the digital data, the CPU 102 analyzes the digital data and generates display data for displaying information represented by the digital data, that is, a message notifying the occurrence of an earthquake and a message for calling attention to a disaster ( Step SB2) The generated display data is sent to the display unit 107. Upon receiving the display data, the display unit 107 displays information represented by the display data on the display unit 107 (step SB3). As a result, as illustrated in FIG. 6, the display unit 107 displays a message for notifying the occurrence of an earthquake and a message for calling attention to a disaster.

  Further, the radio signal transmitted from the base station 32B is received by the communication unit 108 via the antenna 108A of the mobile phone 10B in the cell of the base station 32B. Also on the mobile phone 10B, the message illustrated in FIG. 6 is displayed in the same manner as the mobile phone 10A. On the other hand, the base station 32C does not receive a disaster prevention radio signal here, and therefore does not transmit a radio signal obtained by converting digital data. For this reason, the mobile phone 10C in the cell of the base station 32C does not receive the radio signal output from the base station 32C, and does not display the message illustrated in FIG.

  As described above, according to the present embodiment, the base station 32 receives the disaster prevention radio signal, and the base station 32 that has received the disaster prevention radio signal directly sends information related to the disaster to the mobile phone 10. Information on disasters can be communicated to the person in the disaster occurrence place without imposing a load on the exchange or the like constituting the equipment. Further, even when a disaster occurs and the line of the mobile telephone network 31 is congested, the mobile telephone network 31 does not relay information related to the disaster. Can be notified.

[Operation during voice communication]
Next, an operation when the mobile phone 10A performs line communication with the base station 32A via the mobile telephone network 31 and performs voice communication will be described. When voice communication is performed on the mobile phone 10A, a screen indicating that voice communication is being performed is displayed on the display unit 107 as illustrated in FIG. Here, when an earthquake occurs and the central device 21 generates information indicating a message notifying the occurrence of the earthquake and information indicating a message to call attention to the disaster, the generated information is transmitted to the disaster prevention radio base station. It is converted into a disaster prevention radio signal from 22A-22C and transmitted.

  Here, when the base station 32A and the base station 32B are within a range where the disaster prevention radio signal output from the disaster prevention radio base station 22A can reach, the base station 32A, 32B transmits the disaster prevention radio signal via the antenna 308A. 2 is received by the communication unit 308. When the second communication unit 308 receives the disaster prevention radio signal, the second communication unit 308 converts information represented by the received disaster prevention radio signal (a message notifying the occurrence of an earthquake and a message for calling attention to a disaster) into digital data (step SA1).

  Next, the converted digital data is sent to the CPU 302. When the CPU 302 receives the digital data, the CPU 302 determines whether line connection is performed for voice communication or data communication. Here, since the mobile phone 10A is line-connected through the base station 32A (step SA2; YES), the CPU 302 first disconnects all connected lines (step SA4). Then, the CPU 302 sends the digital data received from the second communication unit 308 to the first communication unit 307. Upon receiving the transmitted digital data, the first communication unit 307 converts the received digital data into a radio signal and transmits it from the antenna 307A (step SA3). When this wireless signal is received by the mobile phone 10A, the message illustrated in FIG. 6 is displayed on the display unit 107 in the same manner as when the mobile phone 10A is in a standby state.

[Modification]
As mentioned above, although embodiment of this invention was described, this invention is not limited to embodiment mentioned above, It can implement with another various form. For example, the present invention may be implemented by modifying the above-described embodiment as follows.

  In the embodiment described above, the central device 21 may send information related to the seismic intensity of the earthquake. In addition, the central device 21 is not limited to information relating to earthquakes, and may be configured to send information such as heavy rain, heavy snow, flood, earth and sand disaster, tsunami, fire, and thunder as long as it is information relating to a disaster. The central device 21 may send information related to the evacuation site.

  In the above-described embodiment, the base station 32 disconnects the connected line when receiving the disaster prevention radio signal when the line connection is performed. It may be converted into a radio signal and transmitted from the base station 32 to the mobile phone 10.

  In the embodiment described above, the base station 32 may not perform line connection when there is a request for line connection after receiving the disaster prevention radio signal. Further, when the disaster prevention radio signal is received by the base station 32, the mobile telephone network 31 may notify the telephone side that is attempting to connect the line to the mobile phone 10 that the line connection cannot be made. In the above-described embodiment, the base station 32 may receive a call from the mobile phone 10 in the cell and perform line connection even after receiving the disaster prevention radio signal. Further, when receiving a call from the mobile phone 10 in the cell and making a line connection, the mobile telephone system 30 may make a line connection only for a special telephone number such as police or emergency. The base station 32 may stop relaying data communication when the mobile phone 10 receives a disaster prevention radio signal while performing data communication via the base station 32 and the mobile telephone network 31. .

  In the above-described embodiment, the mobile phone 10 that has received the information about the disaster may notify the user that the information about the disaster has been received by sound. In addition, a vibration motor may be provided in the mobile phone 10 and the mobile phone 10 may be vibrated by controlling the vibration motor, thereby notifying that the information about the disaster has been received.

  In the mobile phone 10, the user may be able to set whether or not to notify information related to a disaster when a radio signal representing information related to the disaster is received.

  In the above-described embodiment, the device that can receive the radio signal transmitted by the base stations 32 </ b> A to 32 </ b> C is not limited to the mobile phone 10. Receiving radio signals transmitted from the base stations 32A to 32C by devices equipped with display devices such as PDA (Personal Digital Assistants), notebook personal computer devices, GPS (Global Positioning System) terminals, watches, etc. You may make it alert | report information.

It is a figure showing the whole system composition concerning one embodiment of the present invention. It is the figure which showed the hardware constitutions of the base station 32 which concerns on the same embodiment. It is the figure which showed the hardware constitutions of the mobile telephone 10 which concerns on the same embodiment. 4 is a flowchart showing a flow of processing performed in the base station 32. 4 is a flowchart showing a flow of processing performed in the mobile phone 10. 4 is a diagram illustrating a screen displayed on the mobile phone 10; FIG. 4 is a diagram illustrating a screen displayed on the mobile phone 10; FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10,10A-10C ... Mobile phone, 20 ... Disaster prevention radio system, 21 ... Central apparatus, 22A-22C ... Disaster prevention radio base station, 30 ... Mobile telephone system, 31 ... Movement Telephone network, 32A to 32C ... Base station (base station device), 40 ... Fixed telephone network, 50 ... Internet, 101 ... Bus, 102 ... CPU, 103 ... ROM, 104 ... RAM, 105 ... storage unit, 106 ... operation unit, 107 ... display unit, 108 ... communication unit, 108A ... antenna, 112 ... voice processing unit, 301 ... Bus, 302 ... CPU, 303 ... ROM, 304 ... RAM, 305 ... storage unit, 307 ... first communication unit, 307A ... antenna, 308 ... second communication Part, 308A ... Antenna

Claims (5)

Receiving means for receiving a radio signal in the first frequency band;
Transmitting means for transmitting the information represented by the radio signal received by the receiving means to the terminal device by a radio signal in a second frequency band;
The terminal device communicates with the terminal device by a radio signal in the second frequency band, and communicates with a device that is a communication partner of the terminal device and a device that relays communication performed between the terminal device, and the terminal device. And a relay unit that relays communication performed between the terminal device and a device that is a communication partner of the terminal device.   The base station apparatus according to claim 1, wherein the relay unit stops relaying communication when a radio signal in the first frequency band is received by the receiving unit.   3. The base station apparatus according to claim 2, wherein when the relay is stopped for the communication being relayed, the relay unit notifies the communication partner of the terminal apparatus that the communication has been stopped. .   The relay means continues the communication relay when the receiving means receives the wireless signal when the relay means is relaying the communication, and the transmitting means performs transmission. The base station apparatus according to 1. First receiving means for receiving a radio signal in a first frequency band;
Transmitting means for transmitting the information represented by the radio signal received by the first receiving means to the terminal device by a radio signal in the second frequency band;
The terminal device communicates with the terminal device by a radio signal in the second frequency band, and communicates with a device that is a communication partner of the terminal device and a device that relays communication performed between the terminal device, and the terminal device. And a relay station that relays communication performed between the terminal device and a device that is a communication partner of the terminal device,
Second receiving means for receiving a radio signal in the second frequency band transmitted from the transmitting means;
A communication system comprising: a terminal device including: a notification unit configured to notify information represented by a radio signal received by the second reception unit.

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