WO2012147587A1 - Wireless communication system and message notification method - Google Patents

Abstract

This switching equipment comprises: an assessment unit which, when a telephone call is received by a second mobile device from a first mobile device, assesses whether access to a circuit-switched network, which is to be connected to the second mobile device, is restricted; and an access point switching unit which connects the first mobile device to a file server if access is assessed as being restricted. The file server comprises: an acquisition unit which acquires an audio message addressed to the user of the second mobile device if the file server is connected to the first mobile device; a voice file creation unit which creates an audio file containing an audio message; a storage unit which stores the audio file; an acquisition information creation unit which creates acquisition information for acquiring audio files; and a transmission unit which transmits the acquisition information to the second mobile device via a packet-switched network. The transmission unit transmits the audio file according to a download request, which is to be transmitted from the second mobile device that received the audio file acquisition information.

Description

Wireless communication system and message notification method

The present invention relates to a wireless communication system.

When a large-scale disaster such as an earthquake occurs, many users use voice calls to confirm the safety of the disaster-stricken area, in addition to the government and disaster prevention agencies involved in disaster recovery activities. At this time, a larger amount of traffic is processed in the network than in normal times. Since a large amount of traffic is processed by the network, it becomes difficult to establish communication. Since communication is difficult to connect, traffic network control is performed by restricting communication.

The mobile communication network includes a network for processing a circuit switching (CS) call and a network for processing a packet switching (PS) call.

However, since network control of CS calls and PS calls is regulated by 3GPP (3rd Generation Partnership Project) standard specifications so that they cannot be controlled independently, even when the traffic volume of PS calls is small, such as voice calls PS calls were regulated more than necessary according to the CS call regulation rate.

Therefore, a function for independently performing CS and PS network control has been added to the 3GPP standard specifications (for example, see Non-Patent Document 1).

As described above, when a large-scale disaster occurs, it is assumed that access control is often executed for CS calls because voice calls are often used.

Even when access restrictions are implemented for CS calls, safety can be confirmed by using a disaster message board or the like. However, complex operations are required to use disaster message boards. For example, an operation for registering a message and an operation for notifying that a message has been registered are required. In addition, an operation for inputting a telephone number of a person who wants to confirm safety is required. Such an operation is easy for a user with high literacy, but difficult for a user with low literacy.

Furthermore, there is a request for the caller to transmit voice rather than characters to be displayed on the disaster message board. In addition, there is a demand for the called party to listen to the voice rather than the message displayed on the disaster message board.

The present invention has been made in view of the above-described points, and an object of the present invention is to provide a technique capable of easily listening to voice even when access restriction is implemented in a circuit-switched network on the receiving side. To do.

A wireless communication system according to an embodiment of the disclosure includes:
A restriction determination unit that determines whether or not access to a circuit-switched network to be connected to the second mobile device is restricted when a telephone call from the first mobile device to the second mobile device is received. When,
An exchange having a connection destination switching unit for connecting the first mobile device to the file server when it is determined that the restriction is determined by the restriction determination unit;
A voice message acquisition unit for acquiring a voice message addressed to a user of the second mobile device to be notified by the first mobile device when connected to the first mobile device;
A voice file creation unit that creates a voice file including a voice message to be acquired by the voice message acquisition unit;
An audio file storage unit for storing an audio file to be created by the audio file creation unit;
An audio file acquisition information creation unit for creating audio file acquisition information for acquiring an audio file to be created by the audio file creation unit;
The second mobile device has a file server having a transmission unit that transmits the voice file acquisition information to be created by the voice file acquisition information creation unit via a packet switching network,
The transmitting unit transmits an audio file according to a request signal for downloading an audio file to be transmitted from the second mobile device that has received the audio file acquisition information.

A message notification method according to an embodiment of the disclosure is as follows.
A message notification method for notifying a message from a first mobile device to a second mobile device,
When a telephone call from the first mobile station to the second mobile station is received, the switch determines whether access to the circuit switched network to be connected to the second mobile station is restricted. A regulation determination step;
A connection destination switching step in which the exchange connects the first mobile device to a file server when it is determined that the restriction is determined in the restriction determination step;
A voice message acquisition step in which the file server acquires a voice message addressed to a user of the second mobile device to be notified by the first mobile device when connected to the first mobile device;
An audio file creation step in which the file server creates an audio file containing the audio message to be acquired by the audio message acquisition step;
An audio file storing step in which the file server stores an audio file to be created by the audio file creating unit;
An audio file acquisition information creating step for creating audio file acquisition information for the file server to acquire an audio file to be created by the audio file creating step;
The file server receives, via the packet switching network, the voice file acquisition information to be created by the voice file acquisition information creation step and the voice file acquisition information to the second mobile device. The file server includes an audio file transmission step of transmitting an audio file according to a request signal for downloading an audio file to be transmitted from the second mobile device.

According to the disclosed wireless communication system, it is possible to easily hear voice even when access restriction is implemented in the circuit switching network on the called side.

It is a figure which shows the outline | summary of a radio | wireless communications system. It is a functional block diagram which shows one Example of a radio | wireless communications system. It is a functional block diagram which shows one Example of an exchange. It is a functional block diagram which shows one Example of a file server. It is a sequence chart which shows one Example of operation | movement of a radio | wireless communications system. It is a functional block diagram which shows one Example of a moving apparatus. It is a figure which shows one Example of an exchange.

Next, the form for implementing this invention is demonstrated, referring drawings based on the following Examples.
In all the drawings for explaining the embodiments, the same reference numerals are used for those having the same function, and repeated explanation is omitted.

<Example>
<Wireless communication system>
FIG. 1 shows an overview of an embodiment of a wireless communication system.

In this embodiment, access to the CS network on the caller side is not restricted, and access to the CS network on the callee side is restricted. Access to the PS network on the called side is not restricted.

Suppose user A calls user B.

User A makes a telephone call (1). A call from user A is about to be notified from the CS network on the caller side to the CS network on the callee side, but the CS network on the callee side is restricted. Since the incoming CS network is regulated, a disconnection signal is transmitted from the incoming CS network to the outgoing CS network.

When a disconnection signal is transmitted from the terminating CS network, the file server included in the originating CS network indicates that the user A cannot connect to the user B and that the message to the user B is stored. Send. When user A issues a message according to the guidance, the message is recorded and stored in the file server (2). The file server notifies the user B of information for acquiring a voice message via the PS network on the receiving side. Alternatively, the file server may notify the user B of the voice message via the CS network on the receiving side. User B obtains a voice message according to the information for obtaining the voice message (3). The file server notifies the user A that the voice message has been acquired.

FIG. 2 shows an embodiment of a wireless communication system.

FIG. 2 shows a first wireless communication system (represented by the suffix “1”) and a second wireless communication system (represented by the suffix “2”). From the mobile device 100 ₁ for performing radio communication by a first wireless communication system, the mobile unit 100 ₂ for performing radio communication by the second radio communication system as the called party, it is calling by CS line. Access to the second wireless communication system cell 250 ₂ the CS lines that are covered by the base station 200 ₂ is restricted.

Mobile devices 100 ₁ and 100 ₂ may be any suitable user terminal with which a user can communicate, including but not limited to mobile phones, information terminals, personal digital assistants, portable personal computers, and the like. .

The radio communication system is mainly classified into a radio access network (RAN) (not shown) that performs radio access control and a core network (CN) 600 that performs mobility management, call control, service control, and the like. In the present embodiment, the core network (CN) 600 particularly related to the present application will be mainly described, and the description of the radio access network will be omitted.

The RAN, the radio base station _{(BTS: Base Transceiver Station) 200} 1 (200 2) and a radio network controller _{(RNC: Radio Network Controller) 300} 1 (300 2) includes.

CN is composed of a circuit switched (CS: Circuit Switched) domain and a packet switched (PS: Packet Switched) domain. In general, the CS domain provides a voice service, and the PS domain provides a data communication service.

A subscriber-level switch (not shown) is included as a node that provides services for each domain to the mobile station.

A gateway switch (not shown) is included as a node that provides services for each domain to the mobile station. There is a gateway switch for processing voice calls and a gateway switch for processing packet calls. It may be mounted on the same device.

In the example shown in FIG. 2, the subscriber floor switch and the gateway gate switch are represented by a switch 400 ₁ (400 ₂ ).

The file server 500 is connected to the exchange 400 ₁ (400 ₂ ). In the file server 500, access to the CS line of the cell 250 ₁ covered by the originating side, that is, the base station 2001 of the _first wireless communication system is not restricted, and the receiving side, that is, the second radio CS line access cells covered by the base station 200 ₂ of the communication system to function when it is restricted. Here, the case where the cell is mainly regulated will be described as an example, but the same applies to the case where both the cell and the exchange are restricted, and the case where the exchange is restricted.

The file server 500 records a voice message for the called party in response to a call made by circuit switching by the mobile station 100 ₁ located in the base station 200 ₁ and converts it into a file. Hereinafter, the voice message to the filed recipient is referred to as a “voice file”.

The file server 500 transmits information for acquiring the audio file (hereinafter referred to as “audio file acquisition information”) to the recipient. The voice file acquisition information is notified from the file server 500 to the called party's mobile station 100 ₂ via the exchange 400 ₂ , RNC 300 ₂ , and BTS 2002 ₂ . Audio file acquisition information, upon being notified to the mobile station 100 _2, PS network of the second radio communication system is utilized. Or, the file server 500 via the terminating side of the CS network, over the call to the mobile station 100 _2, may notify the voice message.

Mobile station 100 ₂ in accordance with the audio file acquisition information from the file server 500 accesses the file server 500, downloads the audio files. The file server 500 notifies the mobile station 100 ₁ that the voice message has been acquired to the mobile station 100 ₂ .

<Exchange>
Figure 3 illustrates one embodiment of a switch 400 _1. The same applies to the exchange 400 _2. In FIG. 3, a part particularly related to the present application among the functions of the exchange 400 ₁ is described, and the other parts are omitted. The exchange 400 ₁ is connected to the RNC 300 ₁ and the file server 500. Exchange ₄₀₀₂ includes a RNC 300 _2, are connected to the file server 500.

The exchange 400 ₁ includes a connection processing unit 402 ₁ and a connection destination switching unit 404 ₁ .

The connection processing unit 402 ₁ makes a connection request to the mobile device 100 ₂ that is the connection destination in accordance with a call from the mobile device 100 ₁ . Specifically, switch 402 _1, to the exchange 400 ₂ makes a connection request to the mobile station 100 _2. Exchange 400 _2, the mobile station 100 ₂ is because the access to CS line cell visited are regulated, the exchange 400 ₁ transmits a disconnection signal. The disconnection signal includes information (Cause) indicating the reason why the connection cannot be made.

Disconnect signal from the exchange 400 ₂ is input to the connection processing unit 402 _1. Connection processing unit 402 _1, a disconnect signal from the exchange 400 _2, and inputs to the connection switching unit 404 _2.

The connection destination switching unit 404 ₁ is connected to the connection processing unit 402 ₁ . When the disconnection signal is input from the connection processing unit 402 ₁ , the connection destination switching unit 404 ₁ switches the connection destination of the mobile device 100 ₁ to the file server 500. Whether switching the mobile device 100 _first connects to a file server 500 may be determined based on whether access to the CS line cell visited mobile device 100 ₂ is restricted. Specifically, it is determined based on information indicating the reason why connection is not possible. This is because it is preferable that the file server 500 functions when access is restricted due to a disaster or the like.

<File server>
FIG. 4 shows an embodiment of the file server 500. In FIG. 4, portions of the function of the file server 500 that are particularly relevant to the present application are described, and other portions are omitted.

The file server 500 includes a receiving unit 502, an audio acquisition unit 504, an audio file creation unit 506, an audio file storage unit 508, an audio file acquisition information creation unit 510, a transmission unit 512, and an audio file notification control unit 514. And have.

The receiving unit 502, a connection request signal from the exchange 400 ₁ is input. The connection request signal, switch 400 _1, the file server 500, if it is determined that switching the mobile device 100 _first destination is a signal for requesting a connection to be transmitted from the exchange 400 _1. Further, the reception unit 502, the audio signal from the mobile unit 100 ₁ is input. The receiving unit 502, from the mobile station 100 _2, the audio file download request signal to download the audio file is inputted.

Receiving unit 502 performs the connection processing in accordance with a connection request signal from the exchange 400 _1. After the connection process, the reception unit 502 inputs an audio signal to the audio acquisition unit 504. In addition, the reception unit 502 inputs an audio signal download request signal to the audio file notification control unit 514.

The voice acquisition unit 504 is connected to the reception unit 502. Voice acquisition unit 504 acquires a message from the mobile device 100 ₁ of the user. Specifically, the mobile device 100 _1, access to the destination users to notify that it is restricted to notify to take your message to the destination user. Voice acquisition unit 504, the audio file creating unit 506, an audio signal to be inputted from the receiving unit 502, inputs a message from the mobile device 100 _1.

The audio file creation unit 506 is connected to the audio acquisition unit 504. Audio file creating unit 506, to record a message from the mobile device 100 ₁ to be inputted by the voice acquisition unit 504, creates an audio file containing the message said recording. The audio file creation unit 506 stores the audio file in the audio file storage unit 508. Furthermore, the audio file creation unit 506 adds information for identifying the audio file (hereinafter referred to as “audio file identification information”) to the web page for providing the audio file by uploading the audio file. Audio file identification information is input to the acquisition information creation unit 510.

The audio file acquisition information creation unit 510 is connected to the audio file creation unit 506. Audio file acquisition information creating unit 510 creates an audio file acquisition information for acquiring the audio file to be created to the mobile station 100 ₂ by the voice file creator 506. Specifically, voice file acquisition information including voice file identification information to be input by the voice file creation unit 506 and a URL (Uniform Resource Locator) of a web page for providing the voice file may be created. . Audio file acquisition information creating unit 510, as the destination of the audio file acquisition information, specifies the telephone number of the user terminal 100 ₂ (telephone signal using the CS line), the user terminal 100 ₁ of the telephone number as the source (CS line May be designated. The audio file acquisition information may be created in a format that can be used by a short message service (SMS). Or, the audio file acquisition information creating unit 510, as the destination of the audio file acquisition information, the address of e-mail of the user terminal 100 _2, telephone signal using the telephone number (CS line of the user terminal 100 ₁ as a source ) Or an e-mail address. An e-mail address is designated when a destination telephone number and an e-mail address are associated with each other. Specifically, the address book mobile device 100 _1, e-mail address may be acquired associated with a telephone number of the destination. The audio file acquisition information may be a text message. The audio file acquisition information creation unit 510 inputs the audio file acquisition information to the transmission unit 512.

The transmission unit 512 is connected to the audio file acquisition information creation unit 510. Transmitting section 512 transmits the audio file acquisition information from the audio file acquisition information creating unit 510 to the mobile station 100 _2. Specifically, a short message service may be used, or it may be transmitted in the form of an e-mail. As the destination of the voice file acquisition information, the telephone number of the CS line of the destination mobile device may be set, or an e-mail address may be set. Transmitting section 512, to the mobile station 100 _2, and notifies the PS line audio file acquisition information. Or, the transmission unit 512 via the terminating side of the CS network, over the call to the mobile station 100 _2, may notify the voice message.

The audio file storage unit 508 is connected to the audio file storage unit 508. The audio file storage unit 508 stores an audio file to be input by the audio file creation unit 506.

The audio file notification control unit 514 is connected to the reception unit 502, the audio file storage unit 508, and the transmission unit 512. The audio file notification control unit 514 acquires a corresponding audio file from the audio file storage unit 508 in accordance with the audio file download request signal to be input by the reception unit 502 and inputs the acquired audio file to the transmission unit 512. Audio file notification control unit 514, may be transmitted to audio file acquired from the audio file storage section 508 as it is to the mobile station 100 _2, and converts the sound included in the audio file to the text information, the mobile station it may be transmitted to 100 _2. The voice file notification control unit 514 notifies the mobile station 100 ₁ that the voice message has been acquired to the mobile station 100 ₂ .

Transmitting section 512, to the mobile station 100 ₂ transmits the voice file to be input by the audio file notification control unit 514.

<Operation of wireless communication system>
FIG. 5 shows an embodiment of the operation of the wireless communication system.

The mobile device 100 ₁ transmits a connection signal for the mobile device 100 ₂ to the exchange 400 ₁ (step S502). The connection signal includes a telephone signal using a CS line. Specifically, a mobile phone number, a fixed phone number, and a telephone number for a specific use (for example, “171”) are included.

Exchange 400 _1, in accordance with a connection signal from the mobile device 100 ₁ in order to connect to the mobile station 100 _2, the exchange 400 ₂ transmits a connection request (step S504). With respect to the connection request, the exchange 400 _2, since the CS network of the mobile station 100 ₂ is restricted, in order to notify that can not connect, and transmits a disconnect signal (step S506). The disconnection signal includes information indicating the reason why the connection cannot be made.

Exchange 400 ₁ detects that the access restriction is executed CS network cell visited mobile device 100 ₂ by a cutting signal from the exchange 400 ₂ (step S508).

When the exchange 400 ₁ detects that access restriction is being executed for the CS network on the receiving side, the exchange 400 ₁ transmits a guidance message to the mobile device 100 ₁ (step S510). Specifically, it can not connect to the mobile device 100 _2, to take your message to notify, to notify the mobile station 100 ₂ that there is entrusted message.

Furthermore, the exchange 400 _2, when the access restriction to the incoming side of the CS network detects that it is running, may be switched to the mobile device 100 _first connects to a file server 500. The file server 500 became the mobile device 100 _first destination is the mobile station 100 _1, may transmit the same guidance message and guidance described above.

When the user of the mobile station 100 ₁ issues a message in accordance with the guidance message from the exchange 400 ₁ , a voice signal including the message is transmitted via the base station 200 ₁ , RNC 300 ₁ , and exchange 400 ₁ (step S 512). It is transmitted to the server 500 (step S514).

The file server 500 creates an audio file containing the audio signals from the mobile station 100 ₁ (step S516).

The file server 500 creates an audio file acquisition information including an audio file identification information of the audio file, and transmits to the mobile station 100 ₂ (step S518). Voice file acquisition information exchange ₄₀₀ 2, RNC 300 _2, through the base station 200 _2, are sent to the mobile station 100 ₂ (step S520).

The mobile station 100 ₂ receives the audio file acquisition information from the file server 500, the file server 500, audio file download request for downloading the audio file containing the audio file identification information to be included in the audio file acquisition information A signal is transmitted (step S522).

File server 500, according to the voice file download request signal from the mobile station 100 ₂ transmits an audio file (step S524).

File server 500, audio file detects that it has been downloaded to the mobile station 100 ₂ (step S526). It may be detected by any response signal from the mobile station 100 ₂ is received, it may be detected by transmitting the audio file to the mobile station 100 _2.

File server 500, the mobile device 100 _1, the audio file to the mobile station 100 ₂ notifies the audio file notification completion information indicating that it has been downloaded (step S528).

Figure 6 shows an embodiment of mobile station 100 _2.

The mobile device includes a reception unit 102, an audio file identification information acquisition unit 104, an audio file download request signal creation unit 106, a transmission unit 108, and an audio file playback unit 110. The audio file identification information acquisition unit 104 is connected to the reception unit 102, the audio file download request signal generation unit 106 is connected to the audio file identification information acquisition unit 104, and the transmission unit 108 is connected to the audio file download request signal generation unit 106. The audio file playback unit 110 is connected to the reception unit 102.

The mobile station 100 ₂ to the predetermined application may be pre-installed. When the audio file acquisition information is received from the file server 500, the application is activated. The app the audio file identification information acquiring unit 104 of the mobile station 100 _2, the voice file acquisition information, to acquire the audio file identification information. The app the audio file download request signal generator 106 of the mobile device 100 _2, to create an audio file download request signal including the audio file identification information. The app the transmission unit 108 of the mobile station 100 ₂ to transmit the audio file download request signal including the audio file identification information. The app the receiving unit 102 of the mobile station 100 _2, to download the audio file from the file server 500. The app to the audio file reproduction unit 110 of the mobile station 100 _2, to reproduce the audio file. When the audio file is converted into text data, the text data may be output.

From the file server 500, or audio file is downloaded, whether data converted into text data is transmitted, it may be set by the on-board features to the mobile station 100 _2.

The predetermined application may be activated by receiving a message such as CBS transmitted in an area where access restriction is implemented.

From the file server 500, the user of the group associated with some condition with the mobile station 100 _2, the audio file acquisition information may be transmitted.

Further, from the file server 500, by calling for the identified number associated by some condition to the mobile station 100 ₂ is performed, the user of the mobile station 100 _2, the message from the mobile device 100 ₁ be notified Good. Specifically, by is made outgoing landline associated with the mobile station 100 _2, the message from the mobile device 100 ₁ may be notified.

The embodiment described above can be applied even when three or more wireless communication systems are mixed.

In addition, the mobile device 100 ₁ of the caller may record a voice message to the file server 500 by dialing the access code, such as a disaster message dial. When the file server 500 stores the voice message in the storage device (voice file storage unit), the file server 500 notifies the mobile device of the destination specified in advance of the storage location. For example, it may be notified to the family terminal with reference to the contract information, or may be notified to the terminal designated in advance by the user of the originating terminal.

The destination may be a mobile phone number, an e-mail address, or a landline phone number. For example, the destination of the SMS message, such as the mobile station in advance registered family may be a terminal that has entered into an agreement between the mobile station 100 ₁ and the family caller. In this case, the destination information may be generated from contract information between family members. Further, the destination of the SMS message may be a terminal designated by the mobile device 100 _first caller.

In addition, designation of the called party when dialing a special number may be made by inputting the called number according to the guidance sent from the file server 500 or the exchange.

Also, a voice file may be downloaded when a user who has not been notified by SMS or the like inputs a calling party number on a web screen or the like and accesses the file server 500.

In the above-described embodiment, the case where the subscriber-level switch and the Kanmon-level switch are represented by the switch has been described. In the case where the exchange is represented by a subscriber-level switch or a gateway-level switch, it includes a case where the object of regulation is a subscriber-level switch and a case where it is a gateway-level switch.

FIG. 7 shows an embodiment of the exchange.

In this embodiment, the case where the CS network on the caller side is not restricted is described. However, even when access control is implemented in the CS network on the calling side, if the target of the control is a gateway switch, and there are a plurality of gateway switches, there are unregulated subscriber floor switches. The functions described above can be realized by connecting to a gateway switch that is not subject to regulation. In other words, when at least one gateway switch is not restricted, the above-described function can be realized. Further, when at least one subscriber-level switch is not regulated, the above-described function can be realized.

According to this embodiment, even when access to the CS network on the receiving side is restricted, the mobile device on the calling side notifies the mobile device on the receiving side using the CS network on the calling side. it can. In this case, it is not necessary to change the design of the mobile device.

For convenience of explanation, description will be made using specific numerical examples to facilitate understanding of the invention. However, unless otherwise specified, these numerical values are merely examples, and any appropriate values may be used.

Although the present invention has been described above with reference to specific embodiments, each embodiment is merely an example, and those skilled in the art will understand various variations, modifications, alternatives, substitutions, and the like. I will. For convenience of explanation, an apparatus according to an embodiment of the present invention has been described using a functional block diagram, but such an apparatus may be realized by hardware, software, or a combination thereof. The present invention is not limited to the above-described embodiments, and various variations, modifications, alternatives, substitutions, and the like are included without departing from the spirit of the present invention.

This international application claims priority based on Japanese Patent Application No. 2011-100152 filed on April 27, 2011, and the entire contents of Japanese Patent Application No. 2011-100152 are incorporated herein by reference. .

100 ₁ , 100 ₂ mobile device 102 receiving unit 104 audio file identification information acquisition unit 106 audio file download request signal creation unit 108 transmission unit 110 audio file reproduction unit 200 ₁ , 200 ₂ base stations 250 ₁ , 250 ₂ cells 300 ₁ , 300 ₂ RNC
400 ₁ , 400 ₂ switch 402 ₁ connection processing unit 404 ₁ connection destination switching unit 500 file server 502 reception unit 504 audio acquisition unit 506 audio file creation unit 508 audio file storage unit 510 audio file acquisition information generation unit 512 transmission unit 514 audio file Notification Control Unit 600 Core Network 700 Subscriber Floor Switch 800 Kanmon Floor Switch

Claims (7)

1. A restriction determination unit that determines whether or not access to a circuit-switched network to be connected to the second mobile device is restricted when a telephone call from the first mobile device to the second mobile device is received. When,
   An exchange having a connection destination switching unit for connecting the first mobile device to the file server when it is determined that the restriction is determined by the restriction determination unit;
   A voice message acquisition unit for acquiring a voice message addressed to a user of the second mobile device to be notified by the first mobile device when connected to the first mobile device;
   A voice file creation unit that creates a voice file including a voice message to be acquired by the voice message acquisition unit;
   An audio file storage unit for storing an audio file to be created by the audio file creation unit;
   An audio file acquisition information creation unit for creating audio file acquisition information for acquiring an audio file to be created by the audio file creation unit;
   The second mobile device has a file server having a transmission unit that transmits the voice file acquisition information to be created by the voice file acquisition information creation unit via a packet switching network,
   The wireless communication system, wherein the transmission unit transmits an audio file in accordance with a request signal for downloading an audio file to be transmitted from the second mobile device that has received the audio file acquisition information.
2. The wireless communication system according to claim 1, wherein
   A wireless communication system comprising: a voice message notification unit that notifies the second mobile device of a voice message included in a voice file to be created by the voice file creation unit via a circuit switching network.
3. The wireless communication system according to claim 1, wherein
   The voice file acquisition information creation unit includes information for identifying a voice file to be created by the voice file creation unit, and a web page to be accessed when the second mobile device acquires the voice file. A wireless communication system for creating audio file acquisition information including information for designating.
4. The wireless communication system according to claim 1, wherein
   The wireless communication system, wherein the transmission unit transmits the audio file acquisition information using a short message service.
5. The wireless communication system according to claim 1, wherein
   The restriction determination unit should be connected to the second mobile device based on whether a disconnection signal is received as a response to a connection request to the circuit switched network to be connected to the second mobile device. A wireless communication system for determining whether access to a circuit switched network is restricted.
6. The wireless communication system according to claim 1, wherein
   A wireless communication system that notifies the first mobile device of information indicating that an audio file has been acquired by the second mobile device after the transmission unit transmits the audio file.
7. A message notification method for notifying a message from a first mobile device to a second mobile device,
   When a telephone call from the first mobile station to the second mobile station is received, the switch determines whether access to the circuit switched network to be connected to the second mobile station is restricted. A regulation determination step;
   A connection destination switching step in which the exchange connects the first mobile device to a file server when it is determined that the restriction is determined in the restriction determination step;
   A voice message acquisition step in which the file server acquires a voice message addressed to a user of the second mobile device to be notified by the first mobile device when connected to the first mobile device;
   An audio file creation step in which the file server creates an audio file containing the audio message to be acquired by the audio message acquisition step;
   An audio file storing step in which the file server stores an audio file to be created by the audio file creating unit;
   An audio file acquisition information creating step for creating audio file acquisition information for the file server to acquire an audio file to be created by the audio file creating step;
   The file server receives, via the packet switching network, the voice file acquisition information to be created by the voice file acquisition information creation step and the voice file acquisition information to the second mobile device. A message notification method comprising: an audio file transmission step in which the file server transmits an audio file according to a request signal for downloading an audio file to be transmitted from a second mobile device.

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