JP2009004953A - Message communication system and message communication method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a message communication system which can meet requirements of users who want to use a message service whose limitation on the number of letters is moderate among a plurality of message services. <P>SOLUTION: The message communication system 1 includes: a management unit 23 which manages a recommendable network with the message service whose number of input letters is the most out of the plurality of the message services; a management unit 21 which manages positions of transmission source terminals and transmission destination terminals; a management unit 22 which manages communication areas of a network other than the recommendable network out of plurality kinds of networks, dividing them into adjacent areas which are adjacent to the communication area of the recommendable network and communication areas other than the adjacent communication areas; and control units 31, 41 which refer the management units 21, 22, and 23 when a message from the transmission source terminal to the transmission destination terminal is received, and notify the communication information according to the positions of the terminals in the adjacent communication area to the transmission source terminal when one of the terminals is in the adjacent communication area. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a message communication system and a message communication method, and more particularly to a message communication system and a message communication method for managing message communication between terminals connectable to a plurality of types of networks.

  A terminal that can be connected to a plurality of types of networks is known (see Patent Document 1).

  Each of the multiple types of networks provides a unique message service. These message services may be different from each other.

  Specifically, the number of characters that can be input may be different between a message service of a certain network and a message service of another network.

  For example, the number of characters that can be used in the C-mail service in the CDMA1X network is smaller than the number of characters that can be used in IM (instant message) in the MMD (multimedia domain) network.

  Patent Document 2 describes a management device that manages the location information of a plurality of terminal devices and provides the location information of the inquired terminal device to the inquired terminal device.

  Patent Document 3 describes a mobile terminal that searches a surrounding communication area based on position information of the terminal and guides the extracted area to the user.

Patent Document 4 describes a mobile communication terminal device that automatically downloads new mail from a mail server when location registration control is executed.
JP 2004-289756 A JP 2002-199433 A Republished patent WO2004 / 089008 Japanese Patent Laid-Open No. 11-252655

  Currently, SMS-GW specifications for mutual conversion between C-mail in the CDMA1X network and IM in the MMD network are being studied.

  When a user (sender) of the MMD network uses the IM service to send C-mail from his / her terminal to the terminal of the user (recipient) of the CDMA1X network, the number of characters for C-mail is limited (50 full-width characters). Therefore, the number of characters is limited in IM. If the number of characters of IM is caught by the limit on the number of characters of C mail, the conversion from IM to C mail is rejected by SMS-GW. It is considered that a means for solving this problem as much as possible is necessary.

  In addition, when the CDMA1X user (sender) uses the C-mail service, the number of characters is similarly limited.

  For this reason, as a user, the request of using IM service as much as possible can be considered.

  This request does not only occur when the C-mail of the CDMA1X network and the IM of the MMD network can be used interchangeably, but it is desired to use as much as possible a message service with a loose character limit among a plurality of available message services. It is thought to be due to the user's psychology.

  Note that Patent Documents 1 to 4 do not describe a user's request to use as much as possible a message service with a limited number of characters among a plurality of message services, and a method for responding to the request.

  An object of the present invention is to provide a message communication system and a message communication method capable of solving the problem of responding to a user's desire to use a message service with a loose character limit among a plurality of message services. .

  The message communication system of the present invention is a message communication system that manages the transmission of messages between a transmission source terminal and a transmission destination terminal that can be connected to a plurality of types of networks each having a unique message service. Recommended information management means for managing a recommended network having a message service having the largest number of characters that can be input among message services, terminal management means for managing the positions of the transmission source terminal and the transmission destination terminal, and the plurality of types of networks An area management means for managing a communication area of a network different from the recommended network among adjacent communication areas adjacent to the communication area of the recommended network and a communication area other than the adjacent communication area; A message addressed to the destination terminal from the source terminal If the transmission source terminal or the transmission destination terminal exists in the adjacent communication area, the terminal management unit, the area management unit, and the recommended information management unit are referred to. Control means for notifying communication information according to the position of the transmission source terminal or the transmission destination terminal existing in the adjacent communication area.

  The message communication method of the present invention is a message communication method for managing the transmission of messages between a transmission source terminal and a transmission destination terminal each connectable to a plurality of types of networks each having a unique message service. A recommended information management step for managing a recommended network having a message service having the largest number of characters that can be input among the message services, using recommended information management means, and the positions of the transmission source terminal and the transmission destination terminal, terminal management means A terminal management step managed using a network, a communication area of a network different from the recommended network among the plurality of types of networks, an adjacent communication area adjacent to the communication area of the recommended network, and other than the adjacent communication area And use the area management means separately. Managing the area, and when receiving a message addressed to the destination terminal from the source terminal, refer to the terminal management means, the area management means, and the recommended information management means, and When the transmission destination terminal is present in the adjacent communication area, a control step of notifying the transmission source terminal of communication information corresponding to a position of the transmission source terminal or the transmission destination terminal present in the adjacent communication area; including.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to respond to the user's request | requirement of using the message service with a loose character number restriction | limiting among several message services.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a block diagram showing a message communication system 1 according to an embodiment of the present invention.

  In FIG. 1, a message communication system 1 manages message transmission between a terminal 100 and a terminal 200 that can be connected to a plurality of types of networks.

  In this embodiment, a CDMA 1X network and an MMD network are used as a plurality of types of networks. The plurality of types of networks are not limited to the CDMA 1X network and the MMD network, and can be changed as appropriate. Further, the number of terminals is not limited to two and can be changed as appropriate.

  In the CDMA1X network, a MAIL service is provided as a unique message service. In the MMD network, an IM service is provided as a unique message service. The IM service has more characters that can be entered than the C-mail service. For this reason, in this embodiment, an MMD network is used as a recommended network.

  The message communication system 1 includes an LIS (information management device) 2, an SMSC (short message service center) 3, and an SMS-GW (short message service gateway) 4.

  Each of terminal 100 and terminal 200 acquires its own position based on GPS signals from GPS satellite 300, GPS satellite 400, and the like. Each of the terminal 100 and the terminal 200 transmits position information indicating its own position to the LIS 2 together with its own mail address. Each of the terminal 100 and the terminal 200 may periodically perform acquisition of its own position and transmission of position information and a mail address.

  It is assumed that terminal 100 exists in communication area 500A of the CDMA 1X network, and terminal 200 exists in communication area 700A of the MMD network.

  The LIS 2 includes a storage device and accepts and stores location information and mail addresses transmitted from each terminal.

  The SMSC 3 belongs to the CDMA 1X network and accumulates C mail according to the C mail service provided by the CDMA 1X network.

  For example, the SMSC 3 receives and accumulates C mail transmitted from the terminal 100 via the BTS (radio base station) 500 and BSC (control station) 600 of the CDMA 1X network. The SMSC 3 can provide the C-mail to the SMS-GW 4.

  The SMS-GW 4 is connected to the CDMA 1X network and the MMD network, and mutually converts the C mail and the IM. Note that IM is a message corresponding to the IM service provided in the MMD network.

  For example, the SMS-GW 4 receives IM transmitted from the terminal 200 via the BTS 700b and the BSC 800 of the MMD network. The SMS-GW 4 accumulates the IM or converts it to C-mail and provides it to the SMSC 3. The SMS-GW 4 converts the C mail provided from the SMSC 3 into IM and provides it to the MMD network.

  Various devices of the MMD network are interposed between the SMS-GW 4 and the BSC 800.

  The LIS 2 includes a terminal management unit 21, an area management unit 22, and a recommended information management unit 23. The SMSC 3 includes a control unit 31. The SMS-GW 4 includes a control unit 41.

  The terminal management unit 21 is an example of a terminal management unit. The terminal management unit 21 manages the positions of the terminals 100 and 200 (transmission source terminal and transmission destination terminal).

  FIG. 2 is an explanatory diagram showing an example of information managed by the terminal management unit 21.

  In FIG. 2, the terminal management unit 21 stores a mail address 21a and location information 21b in association with each other for each terminal. The mail address 21a and the position information 21b are transmitted from each terminal.

  Returning to FIG. 1, the area management unit 22 is an example of an area management unit. The area management unit 22 manages each communication area of the CDMA 1X network and the MMD network.

  FIG. 3 is an explanatory diagram showing an example of information managed by the area management unit 22.

  In FIG. 3, the area management unit 22 stores a network ID 22a and a communication area 22b in association with each other for each network.

  In the present embodiment, the area management unit 22 sets the communication area 22b of the CDMA1X network different from the recommended network MMD network, the adjacent communication area 22b1 adjacent to the communication area of the MMD network, and the communication other than the adjacent communication area 22b1. The area (other communication area) 22b2 is managed separately.

  Returning to FIG. 1, the recommended information management unit 23 manages recommended information “MMD” (network ID) indicating an MMD network that is a recommended network.

  The control unit 31 is an example of a control unit.

  When the control unit 31 receives a C-mail addressed to the terminal 200 from the terminal 100, the control unit 31 refers to the terminal management unit 21, the area management unit 22, and the recommended information management unit 23, and one of the terminal 100 and the terminal 200 is adjacent. It is confirmed whether it exists in the communication area 22b1.

  For example, when receiving a C-mail addressed to the terminal 200 from the terminal 100, the control unit 31 refers to the terminal management unit 21, the area management unit 22, and the recommended information management unit 23 so that one of the terminal 100 and the terminal 200 It is confirmed whether it exists in the communication area 700A of the network and the other exists in the adjacent communication area 22b1.

  As an example, when receiving a C-mail addressed to the terminal 200 from the terminal 100, the control unit 31 first refers to the terminal management unit 21 and stores location information (terminal) associated with the source mail address of the C-mail. 100 position information) and position information (position information of the terminal 200) associated with the destination mail address of the C mail is read out.

  Subsequently, the control unit 31 refers to the area management unit 22 and a communication area in which the terminal 100 exists (a communication area including position information of the terminal 100) and a communication area in which the terminal 200 exists (terminal Communication area including 200 position information).

  Subsequently, the control unit 31 refers to the area management unit 22 and the recommended information management unit 23, and the communication area where the terminal 100 exists is the adjacent communication area 22b1 and the communication where the terminal 200 exists. It is confirmed whether the area is the communication area 700A of the MMD network indicated by the recommended information “MMD” in the recommended information management unit 23.

  When the terminal 100 is present in the adjacent communication area 22b1 among the terminals 100 and 200, the control unit 31 notifies the terminal 100 of communication information corresponding to the position of the terminal 100.

  For example, when the terminal 100 exists in the adjacent communication area 22b1 and the terminal 200 exists in the communication area 700A of the MMD network, the control unit 31 refers to the terminal management unit 21, the area management unit 22, and the recommended information management unit 23. Thus, the positional relationship (including the distance between them) between the terminal 100 and the communication area 700A of the MMD network is obtained. The control unit 31 notifies the terminal 100 of communication information including information based on the positional relationship (for example, “if you move 1 km to the east, you enter the communication area of the MMD network”).

  Note that it is desirable that the communication information includes that the IM can be transmitted based on the IM service provided by the MMD network when the terminal 100 enters the communication area 700A of the MMD network.

  For example, when the terminal 200 exists in the communication area 700A of the MMD network and the terminal 100 exists in the adjacent communication area 22b1, the control unit 31 indicates that the IM can be used if the terminal 100 moves to the communication area of the MMD network. May be notified.

  The transmission information notified by the control unit 31 is not limited to the above and can be changed as appropriate.

  The control unit 41 is an example of a control unit.

  When the control unit 41 receives an IM addressed to the terminal 100 from the terminal 200, the control unit 41 refers to the terminal management unit 21, the area management unit 22, and the recommended information management unit 23, and one of the terminal 100 and the terminal 200 is adjacent communication. It is confirmed whether it exists in the area 22b1.

  For example, when receiving an IM addressed to the terminal 100 from the terminal 200, the control unit 41 refers to the terminal management unit 21, the area management unit 22, and the recommended information management unit 23, and one of the terminal 100 and the terminal 200 is connected to the MMD network. In the communication area 700A and the other in the adjacent communication area 22b1.

  As an example, when the control unit 41 receives an IM addressed to the terminal 100 from the terminal 200, first, the control unit 41 refers to the terminal management unit 21 and stores location information (of the terminal 200) associated with the sender email address of the IM. Position information) and position information (position information of the terminal 100) associated with the destination mail address of the IM are read out.

  Subsequently, the control unit 41 refers to the area management unit 22 and a communication area in which the terminal 100 exists (a communication area including position information of the terminal 100) and a communication area in which the terminal 200 exists (terminal Communication area including 200 position information).

  Subsequently, the control unit 41 refers to the area management unit 22 and the recommended information management unit 23, and the communication area in which the terminal 100 exists is the adjacent communication area 22b1 and the communication in which the terminal 200 exists. It is confirmed whether the area is the communication area 700A of the MMD network indicated by the recommended information “MMD” in the recommended information management unit 23.

  When only the terminal 100 is present in the adjacent communication area 22b1 among the terminals 100 and 200, the control unit 41 notifies the terminal 200 of communication information corresponding to the position of the terminal 100.

  For example, when the terminal 100 exists in the adjacent communication area 22b1 and the terminal 200 exists in the communication area 700A of the MMD network, the control unit 41 refers to the terminal management unit 21, the area management unit 22, and the recommended information management unit 23. Thus, a distance (for example, the shortest distance) between the terminal 100 and the communication area 700A of the MMD network may be obtained, and communication information including a predicted movement time according to the distance may be notified to the terminal 200. For example, the control unit 41 multiplies the distance between the terminal 100 and the communication area 700 </ b> A of the MMD network by a predetermined moving speed to obtain a predicted movement time according to the distance.

  In this case, the control unit 41 determines that “the terminal (incoming call) will soon enter the communication area of the MMD network, so that the IM can be used at that time” or “the service that can be used by the called party is changed from C mail to IM Communication information such as “please wait for 5 minutes until switching to service” is sent to the terminal 200.

  The communication information is stored in the MMD network when the terminal 100 enters the communication area 700A of the MMD network, for example, “If the terminal (incoming) moves to the communication area of the MMD network, the IM can be used”. It is desirable to include that it is possible to transmit IM based on the IM service provided by.

  The transmission information notified by the control unit 41 is not limited to the above and can be changed as appropriate.

  SMSC3 and LIS2, and SMS-GW4 and LIS2 communicate with each other, so that in addition to the conventional C-mail service and IM service and their linkage services, the IM service is given priority to users over the C-mail service. It is possible to provide a comfortable environment.

  Next, the operation will be described.

  FIG. 4 shows a situation where the terminal 100 exists in the adjacent communication area 22b1 of the CDMA1X network and the terminal 200 exists in the communication area 700A of the MMD network, and the terminal 100 becomes a C-mail transmission source, and the terminal 200 transmits it. It is explanatory drawing for demonstrating operation | movement of the previous case. In FIG. 4, the same components as those shown in FIG.

  When a user in the communication area 500A of the CDMA 1X network sends a C-mail addressed to the terminal 200 from the terminal (outgoing) 100 (step 41), the terminal 100 uses the GPS signal from the GPS satellite 300, etc. The current position is obtained, and position information indicating the position is registered in the LIS 2 together with the mail address of the terminal 100 (step 42). It is assumed that the location information and the mail address of terminal 200 are regularly registered in LIS2.

  Next, the transmitted C-mail is transmitted and stored in the SMSC 3 of the CDMA 1X network (step 43).

  The SMSC 3 refers to the LIS 2 before sending the C-mail to the terminal (incoming) 200 (step 44).

  Specifically, when accepting the C-mail, the control unit 31 refers to the LIS 2 and confirms whether the terminal 100 exists in the adjacent communication area 22b1 and the terminal 200 exists in the communication area 700A of the MMD network. .

  When the terminal 100 exists in the adjacent communication area 22b1 and the terminal 200 exists in the communication area 700A of the MMD network, the control unit 31 instructs the terminal 100 to use "IM if moving to the communication area of the adjacent MMD network". The communication information “becomes” is notified (step 45).

  For this reason, if the user of the terminal (calling) 100 moves to the communication area of the MMD network, it becomes possible to select and use IM instead of C-mail.

  When both terminal 100 and terminal 200 exist in the communication area of the CDMA 1X network, control unit 31 transmits C mail from terminal 100 to terminal 200 without notifying communication information.

  In addition, when the terminal 100 exists in the other communication area 22b2 of the CDMA1X network and the terminal 200 exists in the communication area of the MMD network, the control unit 31 does not notify the communication information and sends the C mail from the terminal 100. Is provided to SMS-GW4. When the SMS-GW 4 receives the C-mail from the SMSC 3, the SMS-GW 4 converts the C-mail into IM and transmits it to the terminal 200.

  FIG. 5 illustrates a situation in which the terminal 100 exists in the adjacent communication area 22b1 of the CDMA1X network and the terminal 200 exists in the communication area 700A of the MMD network, and the terminal 200 becomes the IM transmission source, and the terminal 100 has its transmission destination. It is explanatory drawing for demonstrating operation | movement of the case which becomes. In FIG. 5, the same components as those shown in FIG.

  A user in the communication area 700A of the MMD network transmits an IM addressed to the terminal 100 from the terminal (transmission) 200 (step 51). It is assumed that the location information and the mail address of each of terminal 100 and terminal 200 are periodically registered in LIS 2 (step 52).

  Next, the transmitted IM is transmitted from the MMD network to the SMS-GW 4 (step 53).

  The SMS-GW 4 refers to the LIS 2 before transmitting the IM to the terminal (incoming) 100 (step 54).

  Specifically, when receiving the IM, the control unit 41 refers to the LIS 2 and confirms whether the terminal 100 exists in the adjacent communication area 22b1 and the terminal 200 exists in the communication area 700A of the MMD network.

  When the terminal 100 exists in the adjacent communication area 22b1 and the terminal 200 exists in the communication area 700A of the MMD network, the control unit 41 causes the terminal 200 to enter the communication area of the MMD network, for example, Then, the communication information “IM becomes available at that time” is notified (step 55).

  According to the present embodiment, when the control unit 31 and the control unit 41 accept a message addressed to the transmission destination terminal from the transmission source terminal, the control unit 31 and the control unit 41 refer to the LIS 2 and the transmission source terminal or the transmission destination terminal exists in the adjacent communication area. In this case, communication information corresponding to the position of the terminal existing in the adjacent communication area is notified to the transmission source terminal.

  In this case, the user of the transmission source terminal can recognize the terminal existing in the adjacent communication area by viewing the notification. Therefore, for example, it is possible to prevent the user from using the C-mail service of the CDMA1X network even though the user is in the immediate vicinity of the adjacent communication area, that is, the MMD network.

  For example, when the transmission source terminal exists in the adjacent communication area, the user can recognize that the IM can be used by moving a little more by seeing the notification. For this reason, the user can use as much as possible a message service (IM service) with a loose character limit among a plurality of available message services.

  Further, when the transmission destination terminal exists in the adjacent communication area, the user of the transmission source terminal can recognize that there is a possibility that the IM can be used after waiting for a while by looking at the notification. For this reason, the user can use as much as possible a message service with a limited number of characters among a plurality of available message services.

  In this embodiment, the control unit 31 and the control unit 41 refer to the terminal management unit 21, the area management unit 22, and the recommended information management unit 23 when the transmission source terminal or the transmission destination terminal exists in the adjacent communication area. Then, the distance (for example, the shortest distance) between the terminal in the adjacent communication area 22b1 and the communication area 700A of the MMD network is calculated, and information corresponding to the distance is notified to the transmission source terminal as communication information.

  In this case, the user who has received the communication information can recognize information related to the distance between the terminal in the adjacent communication area 22b1 and the communication area 700A.

  For this reason, when the transmission source terminal exists in the adjacent communication area, the user can recognize the distance to the communication area 700A by seeing the notification. For example, if the user moves a little more, the IM can be used. Can be recognized.

  When the transmission destination terminal exists in the adjacent communication area, the user of the transmission source terminal can recognize how long the IM can be used by looking at the notification.

  In this embodiment, it is also possible to use the estimated movement time corresponding to the distance between the terminal in the adjacent communication area 22b1 and the communication area 700A as the communication information.

  In this case, in this case, the user can recognize a waiting time that is a reference until the IM can be used.

  In the present embodiment, the communication information may include that a message using the IM service can be transmitted when a terminal existing in the adjacent communication area 22b1 enters the communication area 700A.

  In this case, use of the IM service can be promoted.

  Note that the control unit 31 and the control unit 41 urge the use of a message service with a loose character limit, but do not force the use. For this reason, the user can freely select whether to use the IM service or the C-mail service by referring to the communication information.

  Next, another embodiment will be described.

  FIG. 6 is a block diagram showing a message communication system 1A according to another embodiment of the present invention. The message communication system 1A has a control unit 41A instead of the control unit 41 in the message communication system 1 shown in FIG.

  Hereinafter, the message communication system 1A will be described focusing on differences from the message communication system 1.

  The control unit 41A has the same function as the control unit 41. Furthermore, when the terminal 200 exists in the communication area 700A of the MMD network and the terminal 100 exists in the adjacent communication area 22b1, the control unit 41A addresses the terminal 100 from the terminal 200. The message is provided to the storage management unit 42 and stored.

  The accumulation management unit 42 is an example of accumulation management means. When the storage management unit 42 receives a message from the control unit 41 </ b> A, the storage management unit 42 stores the message without transmitting it to the terminal 100.

  The control unit 41A provides a message addressed to the terminal 100 from the terminal 200 to the storage management unit 42, and then refers to the LIS 2 to confirm whether the terminal 200 has entered the communication area 700A of the MMD network. When it is detected that the communication area 700A of the MMD network has been entered, a message addressed to the terminal 100 in the storage management unit 42 is transmitted to the terminal 100.

  The message communication system 1A of the present embodiment has the same effects as the message communication system 1 shown in FIG.

  Further, in this embodiment, the storage management unit 42 sends a message addressed to the terminal 100 from the terminal 200 to the terminal 100 when the terminal 200 exists in the communication area of the MMD network and the terminal 100 exists in the adjacent communication area. Accumulate without sending. The control unit 41A transmits a message addressed to the terminal 100 in the accumulation management unit 42 to the terminal 100 when the terminal 200 enters the communication area of the MMD network.

  In this case, a message (IM) addressed to the terminal 100 can be used effectively.

  In each of the above embodiments, a plurality of types of networks may be operated by one communication company.

  For example, when a telecommunications company provides a new network in addition to an existing network, the message limit on the number of characters in the message service may be more relaxed in the new network than in the existing network.

  In this situation, if the message communication system 1 or the message communication system 1A is used, a user using the communication company can use a message that is convenient for the user among a plurality of types of message services provided by the communication company. The service can be used as much as possible.

  Therefore, the communication company can provide useful services to the user by using the message communication system 1 or the message communication system 1A.

  In each of the embodiments described above, the illustrated configuration is merely an example, and the present invention is not limited to the configuration.

It is the block diagram which showed the message communication system 1 of one Example of this invention. It is explanatory drawing which showed an example of the information managed in the terminal management part. It is explanatory drawing which showed an example of the information managed by the area management part. 4 is an explanatory diagram for explaining an example of an operation of the message communication system 1. FIG. FIG. 10 is an explanatory diagram for explaining another example of the operation of the message communication system 1. It is the block diagram which showed the message communication system 1A of the other Example of this invention.

Explanation of symbols

1, 1A Message communication system 2 LIS
21 Terminal Manager 22 Area Manager 23 Recommended Information Manager 3 SMSC
31 Control unit 4 SMS-GW
41, 41A Control unit 100, 200 Terminal 300, 400 GPS satellite 500, 700a, 700b BTS
600, 800 BSC

Claims (10)

A message communication system for managing the transmission of messages between a source terminal and a destination terminal that can be connected to a plurality of types of networks each having a unique message service,
A recommended information management means for managing a recommended network having a message service having the largest number of characters that can be input among the plurality of message services;
Terminal management means for managing positions of the transmission source terminal and the transmission destination terminal;
A communication area of a network different from the recommended network among the plurality of types of networks is divided into an adjacent communication area adjacent to the communication area of the recommended network and a communication area other than the adjacent communication area. Area management means;
When a message addressed to the destination terminal is received from the source terminal, the terminal management unit, the area management unit, and the recommended information management unit are referred to, and the source terminal or the destination terminal A message communication system comprising: control means for notifying the transmission source terminal of communication information corresponding to the position of the transmission source terminal or the transmission destination terminal existing in the adjacent communication area when present in the area. The message communication system according to claim 1.
The area management means further manages a communication area of the recommended network,
When the transmission source terminal or the transmission destination terminal exists in the adjacent communication area, the control unit refers to the terminal management unit, the area management unit, and the recommended information management unit, and transmits the transmission source terminal or the transmission terminal. A message communication system that calculates a distance between a destination terminal and a communication area of the recommended network and notifies the transmission source terminal of information corresponding to the distance as the communication information. The message communication system according to claim 2,
The message communication system, wherein the communication information is a predicted movement time according to the distance. The message communication system according to claim 2 or 3,
When the transmission source terminal exists in the communication area of the recommended network and the transmission destination terminal exists in the adjacent communication area, the storage for storing the message addressed to the transmission destination terminal without transmitting it to the transmission destination terminal Further comprising a management means,
The control means refers to the terminal management means, the area management means, and the recommended information management means, and detects that the transmission destination terminal has moved from the adjacent communication area to the recommended network communication area. A message communication system for transmitting a message addressed to the destination terminal in the storage management means to the destination terminal. The message communication system according to any one of claims 1 to 4,
The communication information includes a message service using a message service having the largest number of characters that can be input when the transmission source terminal or the transmission destination terminal existing in the adjacent communication area enters the communication area of the recommended network. A message communication system further comprising: enabling. A message communication method for managing transmission of messages between a source terminal and a destination terminal that can be connected to a plurality of types of networks each having a unique message service,
A recommended information management step of managing a recommended network having a message service having the largest number of characters that can be input among the plurality of message services using a recommended information management means;
A terminal management step of managing positions of the transmission source terminal and the transmission destination terminal using a terminal management unit;
A communication area of a network different from the recommended network among the plurality of types of networks is divided into an adjacent communication area adjacent to the communication area of the recommended network and a communication area other than the adjacent communication area. An area management step managed using a management means;
When a message addressed to the destination terminal is received from the source terminal, the terminal management unit, the area management unit, and the recommended information management unit are referred to, and the source terminal or the destination terminal And a control step of notifying the transmission source terminal of communication information according to the position of the transmission source terminal or the transmission destination terminal existing in the adjacent communication area. The message communication method according to claim 6, wherein
In the area management step, the communication area of the recommended network is further managed using the area management means,
In the control step, when the transmission source terminal or the transmission destination terminal exists in the adjacent communication area, the transmission source terminal or the transmission is referred to by referring to the terminal management means, the area management means, and the recommended information management means. A message communication method for calculating a distance between a destination terminal and a communication area of the recommended network, and notifying the transmission source terminal of information corresponding to the distance as the communication information. The message communication method according to claim 7, wherein
The message communication method, wherein the communication information is a predicted movement time according to the distance. The message communication method according to claim 7 or 8,
When the transmission source terminal exists in the communication area of the recommended network and the transmission destination terminal exists in the adjacent communication area, the storage management means does not transmit the message addressed to the transmission destination terminal to the transmission destination terminal. The accumulation management step to accumulate in
With reference to the terminal management means, the area management means, and the recommended information management means, the storage management means when detecting that the transmission destination terminal has moved from the adjacent communication area to the communication area of the recommended network A message communication method further comprising: transmitting a message addressed to the transmission destination terminal to the transmission destination terminal. The message communication method according to any one of claims 6 to 9,
The communication information includes a message service using a message service having the largest number of characters that can be input when the transmission source terminal or the transmission destination terminal existing in the adjacent communication area enters the communication area of the recommended network. A message communication method, further comprising: enabling.

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