JP2008079035A - Communicating system and incoming call signaling method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent loss of chances to receive calls even when calls are received by switching between a car-mounted communication device and a portable communication device according to the state of a vehicle. <P>SOLUTION: According to a communication system, the target of provision of communication services is switched between a portable telephone 4 as the portable communication device carried by a user and a car-mounted telephone 10 as the car-mounted communication device mounted on the vehicle 1 according to the state of the vehicle 1. In this case, after switching the target of provision of communication services to the car-mounted telephone 10, the state of communication of the car-mounted telephone 10 is determined by a communication state determining part 8a. When the car-mounted telephone 10 is out of communication service and there is an incoming call for the phone number of the portable telephone 4, the portable telephone 4 is informed of the incoming call by an incoming call processing part 8b. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a communication system and an incoming call notification method, and more particularly, to a communication system and an incoming call notification method for providing a communication service by appropriately switching between a mobile phone carried by a user and a vehicle communication device mounted on a vehicle.

Conventionally, it has a transfer setting function between a mobile communication device such as a mobile phone brought into the vehicle and an in-vehicle communication device, and transfers an incoming call from the outside to the mobile phone when the in-vehicle communication device becomes unable to communicate An in-vehicle terminal has been proposed (see, for example, Patent Document 1). According to such an in-vehicle terminal, even when the vehicle enters the outside of the communication range and the in-vehicle communication device becomes unable to communicate, it is possible to respond to an incoming call with a mobile phone, thereby minimizing the loss of the incoming call opportunity. It becomes possible.
JP 2006-74424 A

  In the above-mentioned in-vehicle terminal, when it is expected that the in-vehicle communication device becomes unable to communicate during traveling, the user sets in advance whether to perform the transfer, and if the transfer is performed, the transfer destination It is necessary to specify information. Performing such settings before starting the operation requires a complicated process for the user. In order to eliminate such processing, for example, it is conceivable to monitor the state of the vehicle on a communication network and switch between receiving an incoming call with the in-vehicle communication device and receiving an incoming call with a mobile phone based on these.

  However, in this case, when the vehicle stops in a communication environment where the vehicle state cannot be monitored, it is difficult to switch between receiving an incoming call with the in-vehicle communication device or receiving an incoming call with a mobile phone. . For this reason, even when the user carrying the mobile phone is away from the vehicle, there is a problem that the in-vehicle communication device receives an incoming call, and the incoming call opportunity is lost.

  The present invention has been made in view of such problems, and even when receiving an incoming call by switching between the in-vehicle communication device and the portable communication device according to the state of the vehicle, it is possible to prevent a loss of an incoming call opportunity. It is an object to provide a communication system and an incoming call notification method.

  The communication system of the present invention is a communication system that switches a communication service destination according to a state of the vehicle between a portable communication device carried by a user and an in-vehicle communication device mounted on the vehicle, the communication service After switching to the in-vehicle communication device, the communication state determining means for determining the communication state of the in-vehicle communication device, and when the in-vehicle communication device is out of the communication range, an incoming call is received at the telephone number of the portable communication device. If there is, an incoming call processing means for notifying the mobile communication device of an incoming call is provided.

  According to this configuration, after the communication service destination is switched to the in-vehicle communication device according to the state of the vehicle, the communication state of the in-vehicle communication device is determined, and the mobile communication is performed when the in-vehicle communication device is out of the communication range. When there is an incoming call at the telephone number of the device, the mobile communication device is notified of the incoming call. For this reason, even in a communication environment where the communication state of the in-vehicle communication device is out of the communication range and the vehicle state cannot be monitored, the mobile communication device is reliably notified of the incoming call for the telephone number of the mobile communication device. . As a result, even when receiving an incoming call by switching between the in-vehicle communication device and the mobile phone according to the state of the vehicle, it is possible to prevent the loss of the incoming call opportunity.

  In the communication system, when the in-vehicle communication device is out of a communication range, the incoming call processing unit notifies the caller communication device that the incoming call cannot be received if there is an incoming call at the telephone number of the portable communication device. In addition, it is preferable to record the caller's message. In this case, it is possible to notify the caller that the incoming call cannot be handled, and the caller's message can be confirmed by the user of the mobile communication device, thereby providing a highly usable communication system. It becomes possible to do.

  Further, in the communication system, the vehicle-mounted communication device further includes a storage unit that stores information related to a destination of the communication service, and the communication state determination unit is switched from the storage unit to the destination of the communication service. When the information is received, it is preferable to determine the communication state of the in-vehicle communication device. In this case, since the communication state of the in-vehicle communication device is determined according to the information from the storage unit, the target for determining the communication state may be limited to the in-vehicle communication device switched to the communication service provider. It is possible to improve the processing efficiency.

  In particular, in the communication system, it is preferable that the communication state determination unit determines the communication state of the in-vehicle communication device at regular intervals. In this case, since the communication state of the in-vehicle communication device is determined every certain time, it is possible to appropriately grasp the communication state of the in-vehicle communication device that sequentially changes according to the movement of the vehicle.

  For example, in the communication system, it is preferable that the incoming call processing unit notifies the mobile communication device of an incoming call using a short message service. In this case, it is possible to reliably notify the mobile communication device of an incoming call using a short message service that has already been established.

  In the communication system, it is conceivable to switch the communication service destination according to the state of the engine mounted on the vehicle. In this case, it is possible to switch the communication service destination at a desired timing.

  The incoming call notification method of the present invention is an incoming call notification method in a communication system that switches a communication service destination according to the state of the vehicle between a mobile communication device carried by a user and an in-vehicle communication device mounted on the vehicle. Then, after switching the destination of the communication service to the in-vehicle communication device, the communication state of the in-vehicle communication device is determined, and when the in-vehicle communication device is out of the communication range, an incoming call is received at the telephone number of the portable communication device If there is, the mobile communication device is notified of an incoming call.

  According to this method, after the communication service destination is switched to the in-vehicle communication device according to the state of the vehicle, the communication state of the in-vehicle communication device is determined, and the mobile communication is performed when the in-vehicle communication device is out of the communication range. When there is an incoming call at the telephone number of the device, the mobile communication device is notified of the incoming call. For this reason, in a communication environment in which the communication state of the in-vehicle communication device is out of the communication range and the vehicle state cannot be monitored, the mobile communication device is reliably notified of an incoming call for the telephone number of the mobile communication device. As a result, even when receiving an incoming call by switching between the in-vehicle communication device and the mobile phone according to the state of the vehicle, it is possible to prevent the loss of the incoming call opportunity.

  In the incoming call notification method, when the in-vehicle communication device is out of the communication range, if there is an incoming call at the telephone number of the mobile communication device, the caller's communication device is notified that the incoming call cannot be handled and the caller's message Is preferably recorded. In this case, it is possible to notify the caller that the incoming call cannot be handled, and the user of the mobile communication device can check the caller's message, thereby providing a highly usable communication system. It becomes possible to do.

  According to the communication system of the present invention, after the communication service destination is switched to the in-vehicle communication device according to the state of the vehicle, the communication state of the in-vehicle communication device is determined, and the communication state is out of the communication range. In this case, when the incoming call is received at the phone number of the mobile communication device, the mobile communication device is notified of the incoming call. Therefore, when receiving the incoming call by switching between the in-vehicle communication device and the mobile phone according to the state of the vehicle. In addition, it is possible to prevent the loss of the incoming call opportunity.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 is a configuration diagram of the entire network to which the communication system according to the present embodiment is applied. In the communication system shown in FIG. 1, a vehicle 1 is equipped with a car navigation device 2 and an in-vehicle module 3 connected to the car navigation device 2. A user who is in the vehicle 1 carries a mobile phone 4 as a mobile communication device. The mobile phone 4 is, for example, an IMT-2000 (International Mobile Telecommunication-2000) mobile phone, and is configured to receive a plurality of communication services provided via the communication network 5. Further, the in-vehicle module 3 and the car navigation device 2 are configured to receive a communication service provided from the communication network 5 in substantially the same manner as the mobile phone 4 by cooperating with each other. Hereinafter, the in-vehicle module 3 and the car navigation device 2 are collectively referred to as an “in-vehicle telephone 10”. The in-vehicle phone 10 functions as an in-vehicle communication device.

  The communication network 5 includes a base station 51 that performs wireless communication with the mobile phone 4 and the in-vehicle phone 10 that are located in an area managed by the communication network 5, and an exchange 52 that is connected to the base station 51 and performs circuit switching processing in the network. And. The communication network 5 includes a home location register 6 for storing information related to the mobile phone 4 and the in-vehicle phone 10, a voice message providing device 7 for providing a voice message to the mobile phone 4 and the in-vehicle phone 10, and a communication state of the in-vehicle phone 10. Is connected to a communication monitoring device 8 that transmits an incoming message indicating that there is an incoming call to the mobile phone 4 in a predetermined case.

  The home location register 6 stores, for example, well-known information such as location registration information, as well as permitted communication services for the mobile phone 4 and the in-vehicle phone 10 depending on the on / off state of the engine. Information necessary for provision is stored. The voice message providing device 7 is assigned a shortened telephone number called a “special number” and outputs a predetermined voice message in response to a call operation for the special number.

  The communication monitoring device 8 determines that there is an incoming call when there is an incoming call when the in-vehicle telephone 10 is out of the communication range, and the communication state determination unit 8a that determines the communication state (in-communication range, out-of-communication range) of the in-vehicle phone 10. And an incoming call processing unit 8b for transmitting the incoming message shown to the mobile phone 4. For example, the communication state determination unit 8a determines the communication state of the in-vehicle phone 10 by inquiring of the base station 51 or the exchange 52 that manages the area where the vehicle 1 is located. The incoming call processing unit 8b provides a so-called answering machine service in addition to sending an incoming message when there is an incoming call when the in-vehicle telephone 10 is out of the communication range. That is, the incoming call processing unit 8b notifies the caller communication terminal device that the incoming call cannot be handled, while recording the caller's message. The communication state determination unit 8a functions as a communication state determination unit, and the incoming call processing unit 8b functions as an incoming call processing unit.

  Examples of communication services provided by the communication network 5 include “voice communication service”, “video communication service”, “packet data communication service”, “short message service”, “Internet service for mobile phones”, and the like. include. The voice communication service is a service that enables two-way or one-way voice signals to be exchanged one-on-one (call). The moving image communication service is a service that enables two-way or one-way audio / video signals to be exchanged one-on-one (so-called videophone or video distribution). The packet data communication service is a data transmission service compliant with IP (Internet Protocol), and data by packets between a communication device connected to the Internet, a LAN (Local Area Network) or the like and the mobile phone 4 or the in-vehicle phone 10. It enables communication. The short message service (SMS) is a service that enables the mobile phone 4 and the in-vehicle phone 10 to transmit and receive text messages to and from each other. The Internet connection service for mobile phones is a service that enables various types of information to be provided to mobile phones from various content servers on the Internet by using a simple browser program installed in the mobile phone 4.

  In addition to the base station 51 and the switching center 52 shown in FIG. 1, the communication network 5 includes a device group for providing the various communication services described above. Specifically, the communication network 5 includes a device that transmits packet data in accordance with an IP address assigned to the mobile phone 4 or the in-vehicle phone 10 so as to enable packet data communication. Further, the communication network 5 includes a device for transmitting a text message so as to enable a short message service. Furthermore, the communication network 5 includes a device that functions as a gateway between the Internet and the communication network 5 in order to enable an Internet connection service for mobile phones. Since these devices all have a known configuration, the description thereof will be omitted.

  A vehicle sensor 9 is disposed in the vehicle 1. The vehicle sensor 9 is a means for detecting the dynamic or static state of the vehicle 1. For example, the on / off state of an engine mounted on the vehicle, the water temperature in the radiator, and the oil noise of various oils. -It detects oil pressure, the state of various electronic devices equipped in the vehicle 1, and the like. The vehicle sensor 9 is connected to the in-vehicle module 3, and the detection value of the vehicle sensor 9 is captured by the in-vehicle module 3. These detected values are configured to be uploaded from the in-vehicle module 3 to the home location register 6 or a server device (not shown) operated by a vehicle manufacturer or vehicle mechanic through the communication network 5.

  FIG. 2 is a block diagram showing the configuration of the mobile phone 4 constituting the communication system according to the present embodiment. In the mobile phone 4 shown in FIG. 2, the audio processing unit 41 A / D converts the audio signal output from the microphone 42 into an audio digital signal, while the audio digital signal output from the data conversion unit 43 is converted into audio. The signal is D / A converted and output to the speaker 44. The data converter 43 modulates the audio digital signal output from the audio processor 41 and demodulates the signal output from the radio unit 45. The radio unit 45 orthogonally modulates the audio digital signal modulated by the data conversion unit 43 with a carrier signal in a predetermined frequency band, and transmits this as a radio signal from an antenna (not shown). The radio unit 45 performs quadrature demodulation on the radio signal received by the antenna and outputs the radio signal to the data conversion unit 43.

  The operation unit 46 has various functions such as on-hook and off-hook, and keys assigned with characters and numbers, and outputs an operation signal to the control unit 47 in response to a user's pressing operation on each key. The display unit 48 displays various images based on instructions from the control unit 47. The storage unit 49 includes, for example, a nonvolatile storage unit such as a ROM (Read Only Memory) or an EEPROM (Electrical Erasable and Programmable Read Only Memory). The storage unit 49 includes a telephone number (MSISDN: Mobile Station International ISDN number) assigned to the mobile phone 4, a device identifier for uniquely identifying the mobile phone 4 itself, such as an IMUI (International Mobile User Identity), Various control programs are stored. The control unit 47 is configured by a microprocessor, and controls each unit of the mobile phone 4 by executing a control program stored in the storage unit 49.

  FIG. 3 is a block diagram showing the configuration of the in-vehicle telephone 10 constituting the communication system according to the present embodiment. As described above, the in-vehicle phone 10 includes the in-vehicle module 3 and the car navigation device 2. The in-vehicle module 3 includes a wireless unit 31, a data conversion unit 32, and an audio processing unit 33 having the same configuration as the mobile phone 4 described above, a control unit 34 composed of a microprocessor, and a storage unit 35 such as a ROM or an EEPROM. And. The storage unit 35 stores a telephone number assigned to the in-vehicle module 3, a device identifier (for example, IMUI) for uniquely identifying the in-vehicle module 3 as the in-vehicle telephone 10, and various control programs. The control unit 34 controls each unit of the in-vehicle module 3 by executing a control program stored in the storage unit 35.

  The in-vehicle module 3 includes communication interfaces 36 and 37, is connected to the vehicle sensor 9 via the communication interface 36, and is connected to the car navigation device 2 via the communication interface 37. The communication between the in-vehicle module 3 and the vehicle sensor 9 and the communication between the in-vehicle module 3 and the car navigation device 2 may be wired or wireless. In the case of wired communication, the communication interfaces 36 and 37 include connectors and communication circuits for connecting communication cables, and in the case of wireless communication, communication is performed according to communication standards such as Bluetooth (registered trademark) and IrDA. A wireless transmission / reception circuit is provided. The in-vehicle module 3 may be built in the car navigation device 2, or the in-vehicle module 3 and the car navigation device 2 may be connected to each other by connecting the connectors and the connectors. good.

  The car navigation apparatus 2 includes a microphone 21 that receives a voice input from a user, a speaker 22 that outputs a voice signal to the user, and keys to which letters and numbers are assigned. An operation unit 23 that outputs an operation signal to a later-described control unit according to an operation, and a display unit 24 that displays various images based on instructions from the control unit are provided. The storage unit 25 is configured by a non-volatile storage unit such as a hard disk or a DVD (Digital Versatile Disc), and includes a control program for car navigation and a control program for functioning as the in-vehicle telephone 10 while communicating with the in-vehicle module 3. It is remembered. The control unit 26 includes a microprocessor, and controls each unit of the car navigation device 2 by executing a control program stored in the storage unit 25. The positioning unit 27 calculates its own position based on a navigation message received from a GPS satellite (not shown).

  The car navigation apparatus 2 includes a communication interface 28 and is connected to the in-vehicle module 3 via the communication interface 28. The communication interface 28 exchanges audio signals with the in-vehicle module 3 via the communication interface 37. As described above, the in-vehicle module 3 and the car navigation device 2 function as the in-vehicle telephone 10, but the in-vehicle module 3 does not include a microphone or a speaker necessary for a call. For this reason, the in-vehicle module 3 uses the microphone 21 and the speaker 22 provided in the car navigation device 2. Specifically, the audio processing unit 33 of the in-vehicle module 3 receives an audio signal output from the microphone 21 via the communication interface 28 and the communication interface 37, and A / D converts this into an audio digital signal for data conversion. To the unit 32. The audio processing unit 33 D / A converts the audio digital signal output from the data conversion unit 32 into an audio signal, and outputs the audio signal to the speaker 22 via the communication interface 37 and the communication interface 28. As a result, the user can make a so-called hands-free call. The in-vehicle module 3 does not include an operation unit or a display unit like the mobile phone 4, but also uses the operation unit 23 and the display unit 24 provided in the car navigation device 2 in the same manner as described above. .

  Here, information stored in the home location register 6 will be described. FIG. 4 is a diagram showing an example of information stored in the home location register 6 according to the present embodiment. As shown in FIG. 4, the home location register 6 includes a “contract code” assigned for each contract of the switching service for the telephone used, a “device name” indicating whether the mobile phone is a vehicle-mounted telephone, and a mobile phone. Alternatively, the “phone number” and “mail address” assigned to the in-vehicle telephone (in-vehicle module), the “switching flag” indicating whether or not the user telephone (communication service providing destination) has been switched, and the telephone “Switching target flag” indicating a mobile phone to be switched, “vehicle PIN code” stored in the in-vehicle phone (in-vehicle module), and “device” assigned to the mobile phone or in-vehicle phone (in-vehicle module) “Identifiers” are stored in association with each other. Among these information, “contract code”, “device name”, “telephone number”, “mail address”, “in-vehicle PIN code” and “device identifier” are reported by the user or agreed by the communication carrier. Are stored in advance in the home location register 6. The “switching flag” and the “switching target flag” are appropriately rewritten and stored in accordance with an instruction from the mobile phone or the in-vehicle phone.

  In the example shown in FIG. 4, for example, a mobile phone having a telephone number “090-1111-1111”, a mobile phone having a telephone number “090-1111-1112”, and an in-vehicle telephone having a telephone number “090-9999-9991” Are grouped into one contract unit. In other words, it means that a contract is made to switch between the mobile phone and the in-vehicle phone. For example, a case where a user who uses the former mobile phone and a user who uses the latter mobile phone are family members, and one of these users drives the vehicle 1 on which the in-vehicle phone 10 is mounted. It shows the assumed case.

  When the switching flag “1” is set in association with these mobile phones and in-vehicle phones, it means that the telephone used is switched, that is, the communication service provider is switched. On the other hand, when the switch flag “0” is set, it means that the use telephone is not switched, that is, the communication service providing destination is not switched. In the present embodiment, it is assumed that the use telephone is switched by turning on / off the engine of the vehicle 1. That is, when the engine is turned on, the switching flag “1” is set, and the user telephone is switched from the mobile telephone to the in-vehicle telephone. On the other hand, when the engine is turned off, the switching flag “0” is set, and the user telephone is switched from the in-vehicle telephone to the mobile telephone. In the following, switching from a mobile phone to a mobile phone will be referred to as “switching of a used phone” as appropriate, and switching from a mobile phone to a mobile phone will be referred to as “cancellation of use phone switching”. Shall be called.

  In the example of FIG. 4, a set comprising a mobile phone with a telephone number “090-1111-1111”, a mobile phone with a telephone number “090-1111-1112”, and an in-vehicle phone with a telephone number “090-9999-9991”. Since the switch flag “1” is set, the use telephone is switched, and furthermore, the switch target flag “1” is set for the mobile phone having the telephone number “090-1111-1111”. This shows a case where the mobile phone is a switching target. On the other hand, a set comprising a mobile phone having telephone numbers “090-1111-1114”, “090-1111-1115”, and “090-1111-1116” and an in-vehicle telephone having a telephone number “090-9999-9993”. Since the switching flag “0” is set, the case where the user telephone is not switched, that is, the engine of the vehicle 1 is in the off state is shown. In the case of switching the use telephone in the engine on / off state, for example, the mobile phone to be switched is specified in advance, or the mobile phone to be switched is specified according to the time zone. It is desirable to keep it.

  Here, in the communication system according to the present embodiment, contents of communication services provided to the mobile phone and the in-vehicle phone according to the on / off state of the engine will be described with reference to FIG. FIG. 5 is a diagram for explaining the contents of the communication service provided to the mobile phone and the in-vehicle phone in accordance with the on / off state of the engine in the communication system according to the present embodiment. In FIG. 5, the communication service indicated as “a” means that the communication service is provided based on the telephone number a, and the communication service indicated as “b” is based on the telephone number b. It means that it is provided, and a communication service marked with “−” means that provision is not permitted.

  As shown in FIG. 5, when the engine is in an off state (when the use telephone is not switched), the mobile phone 4 can receive all kinds of communication services using its own telephone number “a”. The telephone 10 can receive a part of communication services (packet data communication service and short message service) using the confident telephone number b. Note that some communication services can be received even when the engine is off because the vehicle-mounted telephone 10 uses these communication services, for example, vehicles collected by the vehicle sensor 9. This is because the state 1 can be uploaded to the server device described above.

  On the other hand, when the engine is on (when the user telephone is switched), the mobile telephone to which the user telephone is switched cannot receive all the communication services, and the in-vehicle telephone 10 has the telephone number of the mobile telephone. Using a, it is possible to receive all communication services except Internet connection services for mobile phones. The reason why the in-vehicle phone 10 cannot receive the Internet connection service for the mobile phone is that this service is a service developed exclusively for the mobile phone, so there is some trouble even if the in-vehicle phone 10 tries to use this service. This is because it may occur.

  Thus, when the engine is off, all types of communication services are provided to the mobile phone based on the phone number of the mobile phone, and all types of communication services are provided based on the phone number assigned to the in-vehicle phone. At least a part of the communication services is provided to the in-vehicle phone. On the other hand, when the engine is on, no communication service is provided to the mobile phone, and at least some of the communication services that are not provided are provided to the in-vehicle phone based on the phone number of the mobile phone. ing.

  Next, the operation of the communication system according to the present embodiment will be described. First, the operation of switching and canceling the use telephone will be described. FIG. 6 is a sequence diagram for explaining operations of switching and canceling switching of telephones in the communication system according to the present embodiment. In FIG. 6, the use telephone is switched between the mobile phone having the telephone number “090-1111-1113” shown in FIG. 4 and the in-vehicle telephone having the telephone number “090-9999-9992”. Shall be explained. The same applies to FIGS. 7 and 8 described later.

  In the vehicle 1, the on / off state of the engine is always monitored by the vehicle sensor 9. When the engine is turned on by a user operation, a signal indicating that the engine is turned on (hereinafter referred to as “engine-on signal”) is sent from the vehicle sensor 9 to the in-vehicle phone 10. As shown in FIG. 6, when this engine-on signal is received (step (hereinafter referred to as “S”) 11), the in-vehicle telephone 10 transmits a use telephone switch request to the home location register 6 (S12). This telephone switch request includes the telephone number “090-9999-9992” assigned to the in-vehicle telephone 10.

  When receiving the request for switching the telephone, the home location register 6 searches the record corresponding to the received telephone number “090-9999-9992” with reference to the contents stored therein and switches to that record. The flag “1” is set, and the switching target flag “1” corresponding to the mobile phone having the telephone number “090-1111-1113” is set (S13). This completes the switching of the telephone. Thereafter, a part of the communication service is provided only from the communication network 5 to the in-vehicle phone 10.

  On the other hand, when the engine is turned off by a user operation, a signal indicating that the engine is turned off (hereinafter referred to as “engine off signal”) is sent from the vehicle sensor 9 to the in-vehicle phone 10. When this engine-off signal is received (S14), the in-vehicle telephone 10 transmits a use telephone switch release request to the home location register 6 (S15). This use telephone switch release request includes the telephone number “090-9999-9992” assigned to the in-vehicle telephone 10 as in the above-described use telephone switch request.

  Upon receiving the request for canceling the switching of the user phone, the home location register 6 searches the record corresponding to the received telephone number “090-9999-9992” with reference to the content stored by itself, and stores the record in that record. The switching flag “0” is set, and the switching target flag “0” corresponding to the mobile phone having the telephone number “090-1111-1113” is set (S16). This completes the cancellation of switching of the telephones used. Thereafter, a communication service is provided from the communication network 5 to each of the mobile phone 4 and the in-vehicle phone 10.

  As described above, in the communication system according to the present embodiment, the use telephone is switched according to the on / off state of the engine. However, when the in-vehicle telephone 10 is out of the communication range, for example, the engine is turned off from the on state. When the state is switched, it becomes difficult to cancel the switching of the user telephone. For this reason, in the communication system according to the present embodiment, after switching the use telephone, if the communication state of the in-vehicle telephone 10 is out of the communication range, the answering machine function is set for the mobile telephone 4. At the same time, the incoming message is transmitted to the mobile phone 4.

  Hereinafter, an operation of setting an answering machine function for the mobile phone 4 and transmitting an incoming message to the mobile phone 4 when the in-vehicle phone 10 is out of the communication range after switching the use phone will be described. FIG. 7 shows that in the communication system according to the present embodiment, after switching the use telephone, when the in-vehicle telephone 10 is out of the communication range, an answering machine function is set for the mobile telephone 4 and an incoming message is displayed. FIG. 11 is a sequence diagram for explaining an operation of transmitting to mobile phone 4.

  As shown in FIG. 7, when the telephone set is switched according to the on / off state of the engine in the vehicle 1 (S21), the home location register 6 notifies the communication monitoring device 8 of information about the in-vehicle telephone set 10. (S22). For example, the home location register 6 monitors the telephone number “090-9999-99992” of the in-vehicle phone 10 and the corresponding telephone number “090-1111-1113” of the mobile phone 4 as information about the in-vehicle phone 10. The device 8 is notified.

  When the information about the in-vehicle telephone 10 is received, the communication state determination unit 8a of the communication monitoring device 8 determines the communication state of the in-vehicle telephone 10 at regular intervals, for example (S23). Thus, the reason why the communication state of the in-vehicle phone 10 is determined every certain time is because the communication state of the in-vehicle phone 10 changes according to the movement of the vehicle 1. Here, when the communication state of the in-vehicle telephone 10 is out of the communication range (S24), the incoming call processing unit 8b sets the answering machine function for the mobile telephone 4 in which the use telephone is switched to the in-vehicle telephone 10. (S25). Accordingly, when there is an incoming call to the telephone number “090-1111-1113” of the mobile phone 4 for which the use telephone is switched to the in-vehicle telephone 10 thereafter, the voice indicating that the incoming call cannot be handled. The message is output to the communication terminal device of the sender and the sender's message is recorded.

  After setting the answering machine function, the incoming call processing unit 8b transmits a mail address transfer request assigned to the mobile phone 4 corresponding to the in-vehicle phone 10 to the home location register 6 (S26). The mail address transfer request includes the telephone number “090-1111-1113” of the mobile phone 4. Upon receiving the mail address transfer request, the home location register 6 refers to the content stored in itself and searches for a record corresponding to the received telephone number “090-1111-1113” (S27). The mail address “1111-1113@docomo.ne.jp” of the mobile phone 4 to be transmitted is transmitted to the incoming call processing unit 8b (S28).

  When the mail address is received, the incoming call processor 8b generates an incoming message (S29), and transmits the incoming message to the mail address of the mobile phone 4 (S30). In the communication system according to the present embodiment, after the incoming message is transmitted from the communication monitoring device 8, the mobile phone 4 can receive the short message service. The incoming call processing unit 8b transmits the incoming message to the mobile phone 4 using the short message service. An incoming call is surely notified to the mobile phone 10 using a short message service that has already been established as a service. In this way, by transmitting the incoming message to the mobile phone 4, even if the in-vehicle phone 10 is out of the communication range and the switching of the use phone is not released, the user of the mobile phone 4 recognizes the presence of the incoming call. Is possible.

  In S24, when the communication state determination unit 8a determines that the communication state of the in-vehicle phone 10 is within the communication range, the in-vehicle phone 10 receives an incoming call for the telephone number “090-1111-1113” of the mobile phone 4. Since it can respond, the process returns to S23, and the communication state of the in-vehicle phone 10 is determined again at regular intervals.

  The user of the mobile phone 4 that has received the incoming message as described above performs, for example, the switching cancellation of the user phone through communication with the voice message providing device 7. Hereinafter, an operation in which the user of the mobile phone 4 that has received the incoming message cancels the switching of the user phone will be described with reference to FIG. FIG. 8 is a sequence diagram for explaining an operation in which the user of mobile phone 4 that has received an incoming message releases the switching of the user phone in the communication system according to the present embodiment.

  When the user of the mobile phone 4 cancels the switching of the use phone, the user performs a call operation to the special number assigned to the voice message providing device 7 using the operation unit 46. In the communication system according to the present embodiment, after receiving the incoming message from the communication monitoring device 8, the mobile phone 4 can be provided with the voice communication service for a predetermined time (for example, 5 minutes). During such time, the user performs a call operation to the special number assigned to the voice message providing device 7.

  When receiving a call operation to the special number (S31), the control unit 47 of the mobile phone 4 transmits a call signal including the input special number to the voice message providing device 7 (S32). When the call signal reaches the voice message providing device 7 and the telephone line between the voice message providing device 7 and the mobile phone 4 is established, the voice message providing device 7 determines whether or not to cancel the switching of the user telephone. A voice message for confirming this is transmitted to the mobile phone 4 (S33).

  When the user performs an operation for instructing switching cancellation using the operation unit 46 of the mobile phone 4, the control unit 47 of the mobile phone 4 accepts this operation (S 34), and issues a switching cancellation instruction to the voice message providing device 7. (S35). At this time, the telephone number “090-1111-1113” of the mobile phone 4 is notified from the switching center 52 to the voice message providing device 7 by the caller ID notification function of the communication network 5.

  In response to this, the voice message providing device 7 transfers the telephone number “090-1111-1113” of the mobile phone 4 notified from the communication network 5 to the home location register 6 (S36), and issues a switching cancellation instruction. A voice message indicating acceptance is transmitted to the mobile phone 4 (S37). The home location register 6 searches the record corresponding to the transferred telephone number “090-1111-1113” with reference to the content stored therein, and the record switching flag “0” specified as a result of this search. ”And a switching target flag“ 0 ”corresponding to the telephone number“ 090-1111-1113 ”is set (S38). This completes the cancellation of switching of the telephones used. Thereafter, a communication service is provided from the communication network 5 to each of the mobile phone 4 and the in-vehicle phone 10.

  As described above, in the communication system according to the present embodiment, after the destination of the communication service is switched to the in-vehicle telephone 10 according to the on / off state of the engine mounted on the vehicle 1, the communication of the in-vehicle telephone 10 is performed. The state is determined, and if the incoming call is received at the telephone number of the mobile phone 4 when the in-vehicle phone 10 is out of the communication range, the mobile phone 4 is notified of the incoming call. For this reason, even in a communication environment in which the in-vehicle telephone 10 is out of the communication range and the state of the vehicle 1 cannot be monitored, the mobile telephone 4 is reliably notified of an incoming call for the telephone number of the mobile telephone 4. As a result, even when the in-vehicle telephone 10 and the mobile phone 4 are switched according to the state of the vehicle 1 to receive an incoming call, it is possible to prevent the loss of the incoming call opportunity.

  Further, in the communication system according to the present embodiment, when the telephone number of the mobile phone 4 is received when the in-vehicle phone 10 is out of the communication range, the answering machine function is set and the calling communication device is set. Notify that the incoming call cannot be handled and record the caller's message. Accordingly, it is possible to notify the caller that the incoming call cannot be handled and to confirm the caller's message with the user of the mobile phone 4, thereby providing a communication system with excellent usability. Is possible.

  Furthermore, the communication system according to the present embodiment includes a home location register 6 that stores information related to a communication service providing destination, and the incoming call processing unit 8b of the communication monitoring device 8 is a vehicle-mounted telephone that has been switched to a used telephone. When the information 10 is received, the communication state of the in-vehicle telephone 10 is determined. Thereby, since the communication state of the in-vehicle telephone 10 is determined according to the information from the home location register 6, the object for determining the communication state can be limited to the in-vehicle telephone 10 in which the use telephone is switched. Thus, it is possible to improve the processing efficiency.

  In particular, in the communication system according to the present embodiment, the communication state determination unit 8a of the communication monitoring device 8 determines the communication state of the in-vehicle phone 10 at regular intervals. Thereby, since the communication state of the in-vehicle telephone 10 is determined at regular time intervals, the communication state of the in-vehicle telephone 10 that sequentially changes according to the movement of the vehicle 1 can be appropriately grasped.

  In the communication system according to the present embodiment, the telephone set is switched according to the on / off state of the engine mounted on the vehicle 1. In this way, by switching and canceling the use telephone according to the on / off state of the engine, the use telephone can be switched at a desired timing. However, about the state of the vehicle 1 for performing switching and cancellation of a use telephone, it can change suitably. Any state of the vehicle 1 may be used as an opportunity as long as the use telephone can be switched and cancelled at a timing desired by the user who gets on the vehicle 1.

  In addition, this invention is not limited to the said embodiment, In the range which exhibits the effect of this invention, it can change and implement variously. Further, various modifications can be made without departing from the scope of the object of the present invention.

  For example, in the above embodiment, if the telephone number of the mobile phone 4 is received when the in-vehicle telephone 10 is out of the communication range after the use telephone is switched according to the state of the vehicle 1, a so-called answering machine is received. A case where the telephone function is set and an incoming message is transmitted to the mobile phone 4 is shown. However, the control when the in-vehicle telephone 10 is out of the communication range is not limited to this. As described above, only an incoming message may be transmitted to the mobile phone 4 without setting the answering machine function.

  In the above embodiment, if the telephone number of the mobile phone 4 is received when the in-vehicle telephone 10 is out of the communication range after the use telephone is switched according to the state of the vehicle 1, an incoming message is displayed. However, the present invention is not limited to this. It is also possible to directly respond to the incoming call by the mobile phone 4 without requesting the user of the mobile phone 4 to perform an operation associated with the cancellation of the switching of the use phone.

  Furthermore, in the said embodiment, although the case where the communication monitoring apparatus 8 which has the communication status determination part 8a and the incoming call process part 8b is provided in the communication network 5 is shown, the function which such a communication monitoring apparatus 8 has is shown. If it can be provided on the communication network 5, it is not limited to this, and can be changed as appropriate. For example, a server apparatus that provides a well-known answering machine service in a voice communication service may be provided with these functions.

1 is a configuration diagram of an entire network to which a communication system according to the present embodiment is applied. It is a block diagram shown about the structure of the mobile telephone which comprises the communication system which concerns on the said embodiment. It is a block diagram shown about the structure of the vehicle-mounted telephone which comprises the communication system which concerns on the said embodiment. It is a figure shown about an example of the information memorize | stored in the home location register which concerns on the said embodiment. In the communication system which concerns on the said embodiment, it is a figure for demonstrating the communication service provided to a mobile telephone and a vehicle-mounted telephone according to the state of an engine. It is a sequence diagram for demonstrating the operation | movement of switching of a use telephone and switching cancellation | release in the communication system which concerns on the said embodiment. In the communication system according to the embodiment described above, after switching the use telephone, after setting the answering machine function when the in-vehicle telephone is out of the communication range, the operation for transmitting the incoming message to the mobile phone is described. It is a sequence diagram. It is a sequence diagram for demonstrating the operation | movement which performs switching cancellation | release of a use telephone from a mobile telephone in the communication system which concerns on the said embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vehicle 2 Car navigation apparatus 3 Car-mounted module 4 Mobile telephone 5 Communication network 51 Base station 52 Switching office 6 Home location register 7 Voice message provision apparatus 8 Communication monitoring apparatus 8a Communication state determination part 8b Incoming process part 9 Vehicle sensor 10 Car-mounted telephone

Claims (8)

A communication system that switches a communication service destination according to a state of the vehicle between a portable communication device carried by a user and an in-vehicle communication device mounted on the vehicle,
After switching the communication service providing destination to the in-vehicle communication device, a communication state determining means for determining a communication state of the in-vehicle communication device, and a telephone number of the portable communication device when the in-vehicle communication device is out of communication range A communication system comprising: an incoming call processing means for notifying the mobile communication device of an incoming call when there is an incoming call.   The incoming call processing means notifies the caller communication device that it cannot respond to an incoming call if there is an incoming call at the telephone number of the portable communication device when the in-vehicle communication device is outside the communication range and a message from the caller The communication system according to claim 1, wherein:   A storage unit that stores information on a destination of the communication service; and the communication state determination unit receives the information of the in-vehicle communication device switched to the destination of the communication service from the storage unit, The communication system according to claim 1, wherein the communication state of the in-vehicle communication device is determined.   The communication system according to claim 1, wherein the communication state determination unit determines a communication state of the in-vehicle communication device at regular time intervals.   The communication system according to any one of claims 1 to 4, wherein the incoming call processing means notifies the mobile communication device of an incoming call using a short message service.   The communication system according to any one of claims 1 to 5, wherein a destination of the communication service is switched according to a state of an engine mounted on the vehicle. An incoming call notification method in a communication system that switches a communication service destination according to a state of the vehicle between a mobile communication device carried by a user and an in-vehicle communication device mounted on the vehicle,
After switching the destination of the communication service to the in-vehicle communication device, the communication state of the in-vehicle communication device is determined, and when the in-vehicle communication device is out of the communication range, the telephone number of the portable communication device has an incoming call An incoming call notification method, wherein an incoming call is notified to the portable communication device.   When the in-vehicle communication device is out of the communication range, if there is an incoming call to the telephone number of the portable communication device, the caller communication device is notified that the incoming call cannot be handled and the caller's message is recorded. The incoming call notification method according to claim 7.

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