JP4038502B2 - Connection control system, terminal device and connection control method - Google Patents

Description

  The present invention relates to a connection control system, a terminal device, and a connection control method.

Conventionally, there are terminal devices that can be connected to a plurality of terminal devices at the same time. When the terminal device that can be connected simultaneously becomes the request destination terminal device of the connection request, if the number of connections of the request destination terminal device has already reached the connectable number, the connection request is rejected. The request source terminal device that has been denied the connection request makes a connection request to the request destination terminal device again based on the retransmission criteria and the occurrence of a new connection request. There has also been proposed a network connection control device that queues unconnected line connection requests exceeding the number of permitted connections between a host computer and a terminal device (see, for example, Patent Document 1).
JP 2003-224565 A

  However, in the method in which the request source terminal device issues a connection request to the request destination terminal device based on the retransmission criteria or the occurrence of a new connection request, even if the request destination terminal device becomes connectable by releasing the connection. The connection request could not be made immediately. Since the request destination terminal device does not know the connection request from the request source terminal device, it makes a connection request to the request source terminal device unless there is a reason for requesting the connection from the request source terminal device. I couldn't. In other words, the connection between the request destination terminal device and the request source terminal device could not be established when the connection release made it possible to connect to the request destination terminal device.

  As a result, for example, the request destination terminal device does not know that the connection request from the request source terminal device having a high priority has been rejected, and waits for the request source terminal device to make the next connection request. Communication could not be started quickly. In addition, although shortening the retransmission interval at the request source terminal device can speed up the establishment of the connection to some extent, in this case, the connection request and its rejection process increase, leading to an increase in the load on the terminal device and the network. End up. Furthermore, in the case of a method of queuing unconnected line connection requests exceeding the permitted number of connections, not only will the load increase due to the queuing process, but the queued connection requests will always be connected. If the connection is no longer necessary when releasing the connection of the destination terminal device, useless connection control is performed, which further increases the load on the terminal device and the network.

  Therefore, an object of the present invention is to make it possible to establish a necessary connection when the connection is released.

  The connection control system according to the present invention is based on a connection control information storage unit that stores connection wait information related to a connection request of a request source terminal device that has been rejected due to exceeding the connectable number of request destination terminal devices, and based on the connection wait information A notification unit that performs at least one of notification of connection waiting information to the request destination terminal device or notification of connection release to the request source terminal device, and connection waiting information in the connection control information storage unit based on the result of the connection request And a registration unit for registering information.

  According to such a connection control system, when the connection request of the request source terminal device is rejected because it exceeds the connectable number of the request destination terminal device, connection waiting information related to the connection request can be stored. . The connection control system may perform at least one of notification of connection waiting information to the request destination terminal apparatus or notification of connection release to the request source terminal apparatus triggered by the connection release of the request destination terminal apparatus. it can. Therefore, either the request source terminal device or the request destination terminal device that has received the notification can determine whether or not a connection request is necessary based on the acquired notification, and can make a connection request. Therefore, according to the connection control system, it is possible to establish a necessary connection when the connection is released.

  The terminal device according to the present invention includes a receiving unit that receives a notification of connection waiting information regarding a connection request of a request source terminal device that has been rejected because the number of connectable terminal devices exceeds the number of connections, and a request source based on the notification of connection waiting information And a control unit that issues a connection request to the terminal device. According to such a terminal device, when it becomes a request destination terminal device and a connection request of the request source terminal device is rejected because it exceeds the connectable number of the request destination terminal device, a connection waiting information notification is received and the request source When the connection of the terminal device is released, it is possible to determine whether or not a connection request is necessary based on the received notification and perform the connection request. Therefore, according to such a terminal device, it becomes possible to establish a necessary connection when the connection is released.

  In addition, the other terminal device according to the present invention receives a connection release notification when the connection of the request destination terminal device is released when the connection request is rejected because the number of connectable requests of the request destination terminal device is exceeded. And a control unit that issues a connection request to the requested terminal device based on the notification of connection release. According to such a terminal device, when it becomes a request source terminal device and the connection request of the request source terminal device is rejected because it exceeds the connectable number of the request destination terminal device, the connection release of the request destination terminal device is triggered. It is possible to receive a connection release notification, determine whether a connection request is necessary based on the received notification, and make a connection request. Therefore, according to such a terminal device, it becomes possible to establish a necessary connection when the connection is released.

  The connection control method according to the present invention is based on the result of the connection request in the connection control information storage unit that stores the connection waiting information related to the connection request of the request source terminal device that is rejected because it exceeds the connectable number of the request destination terminal device. Connection waiting information is registered, and based on the connection waiting information, at least one of notification of connection waiting information to the request destination terminal device or notification of connection release to the request source terminal device is performed. .

  As described above, according to the present invention, it is possible to establish a connection necessary when the connection is released.

(Connection control system)
As shown in FIG. 1, the connection control system 100 includes a mobile station 10, a personal computer 20a, a server 20b, a mobile station 20c, a connection control device 30, an exchange station 40, a mobile communication network 50, a wireless communication network. A LAN 60a, the Internet 60b, and a mobile communication network 60c are provided.

  The mobile station 10, the personal computer 20a, the server 20b, and the mobile station 20c are terminal devices that perform communication. The type of terminal device is not limited to these. The terminal device is either a request source terminal device that makes a connection request to the request destination terminal device or a request destination terminal device that receives a connection request from the request source terminal device. The terminal device can be connected to a plurality of terminal devices at the same time. The number of terminal devices to which terminal devices can be connected simultaneously (hereinafter referred to as “number of connectable devices”) varies depending on the performance of the terminal device and the network. The server 20b is provided by, for example, an Internet service provider. The mobile communication network 50, the wireless LAN 60a, the Internet 60b, and the mobile communication network 60c are networks that connect terminal devices. The type of network is not limited to these.

  The mobile station 10 is connected to the mobile communication network 50 and can be connected to another network via the mobile communication network 50. The personal computer 20a is connected to the wireless LAN 60a and can be connected to another network via the wireless LAN 60a. The server 20b can be connected to another network via the Internet 60b. The mobile station 20c can be connected to another network via the mobile communication network 60c.

  Each terminal device can communicate with the terminal device connected to the network via the connected network. For example, the mobile station 10 and the personal computer 20a can be connected to the mobile communication network 50 via the wireless LAN 60a. The mobile station 10 and the server 20b can be connected via the mobile communication network 50 and the Internet 60b. The mobile station 10 and the mobile station 20c can be connected via the mobile communication network 50 and the mobile communication network 60c.

  The exchange 40 and the connection control device 30 can be provided in the mobile communication network 50. The installation location of the connection control device 30 is not limited, and may be provided on another network or may be provided connected to the mobile communication network 50. The connection control device 30 performs connection control between terminal devices. When the number of connections of the request destination terminal device has reached the connectable number, the connection control device 30 instructs the exchange 40 to reject the connection request from the request source terminal device. For this reason, the connection control device 30 performs connection control between the terminal devices by performing at least one of notification of connection waiting information to the request destination terminal device or notification of connection release to the request source terminal device. The connection waiting information is information relating to a connection request of a request source terminal device that is rejected because the number of connectable requests of the request destination terminal device is exceeded. The connection request from the request source terminal apparatus may be rejected by the request destination terminal apparatus when the number of connections of the request destination terminal apparatus has reached the connectable number.

  As shown in FIG. 2, the connection control device 30 includes a communication unit 31, a notification unit 32, a registration unit 33, a connection control information database 34, and a call control unit 35. The communication unit 31 communicates with terminal devices such as the mobile station 10, the personal computer 20 a, the server 20 b, the mobile station 20 c, and the exchange 40. The connection control information database 34 is a connection control information storage unit that stores connection waiting information related to a connection request from a request source terminal device that has been rejected because the number of connectable request terminal devices has been exceeded.

  The connection waiting information related to the connection request includes a correspondence relationship between the request destination terminal apparatus and the request source terminal apparatus that has been rejected by making a connection request to the request destination terminal apparatus. For example, the connection control information database 34 can store connection waiting information by making a connection request to the request destination terminal device for each request destination terminal device and storing the rejected request source terminal device.

  Specifically, the connection control information database 34 includes a storage area for storing information regarding the terminal device for each terminal device. The storage area of each terminal device in the connection control information database 34 is, for example, as shown in FIG. 4, the user ID of the user of the terminal device, the terminal ID of the terminal device, the connectable number, the notification setting terminal, the communicating terminal, the connection It has a field for the waiting terminal.

  The communicating terminal is a terminal device with which the terminal device establishes connection and performs communication. The connection control information database 34 stores as many terminals as can be connected to each terminal device. For example, when the number of connectable terminal devices is two, two fields of “terminal in communication”, “terminal in communication 2”, and “terminal in communication 2” can be provided in the storage area. The connection waiting terminal is a request source terminal device that has made a connection request to the request destination terminal device and has been rejected.

  The connection control information database 34 can store, for example, addresses of terminals in communication and terminals waiting for connection. Further, the connection control information database 34 can store the address used by the terminal device for communication with the communicating terminal in addition to the address of the communicating terminal. The address may be assigned in advance to the terminal device, and is assigned from the network to which the terminal device is connected when the request source terminal device makes a connection request or when the request destination terminal device accepts a connection request. Can be used. For example, in the case of the mobile communication network 50, the exchange 40 can assign an address to the mobile station 10.

  The notification setting terminal indicates a request source terminal device that desires connection control when the terminal device becomes a request destination terminal device. Further, the notification setting terminal also indicates the priority order of the terminal device to be connected. The notification setting terminal may be set for each terminal device or may be set for each network to which the terminal device is connected. For example, the connection control information database 34 can store, as a notification setting terminal, the terminal ID and address of a terminal device that desires connection control in descending order of priority, or the network ID of a network to which the terminal device is connected. .

  The connection control information database 34 stores in advance the user ID of the user of the terminal device, the terminal ID of the terminal device, the connectable number, and the notification setting terminal in the storage area of each terminal device. Note that the connection control information database 34 may be provided separately from the connection control device 30.

  The call control unit 35 processes a connection request from the request source terminal device. The call control unit 35 acquires a connection request from the exchange 40 via the communication unit 31. The call control unit 35 refers to the connection control information database 34 and determines whether or not the number of connections of the request destination terminal device has reached the connectable number. When the connectable number has been reached, the call control unit 35 instructs the exchange 40 to reject the connection request from the request source terminal device.

  On the other hand, when the connectable number has not been reached, the call control unit 35 instructs the exchange 40 to make a call to the request destination terminal device based on the connection request from the request source terminal device. In this case, the call control unit 35 receives the result of the call made to the request destination terminal apparatus based on the connection request, that is, the connection request from the request source terminal apparatus is received by the request destination terminal apparatus, and the connection is established. No is acquired from the exchange 40 via the communication unit 31. The call control unit 35 inputs the result for the connection request to the registration unit 33.

  The registration unit 33 registers connection waiting information in the connection control information database 34 based on the result of the connection request. The registration unit 33 registers the user ID of the user of the terminal device, the terminal ID of the terminal device, and the notification setting in advance in the storage area of each terminal device. The registration unit 33 acquires a result for the connection request from the call control unit 35.

  The registration unit 33 rejects the connection request by the request source terminal device, and when the connection establishment fails, as a result of the connection request, the connection rejection, the address of the request source terminal device, and whether the request source terminal device is the notification setting terminal Acquire information for determining whether or not. For example, the registration unit 33 acquires the network ID of the network to which the request source terminal device is connected and the terminal ID and address of the request source terminal device.

  The registration unit 33 first refers to the connection control information database 34 and compares the notification setting terminal in the storage area of the request destination terminal device with the acquired network ID, terminal ID, or address of the request source terminal device. Thereby, the registration unit 33 determines whether the request source terminal device corresponds to the notification setting terminal. When corresponding to the notification setting terminal, the registration unit 33 registers the address of the request source terminal device in the connection waiting terminal field of the storage area of the request destination terminal device. When there are a plurality of terminals waiting for connection, the registration unit 33 may register the addresses of the terminals waiting for connection according to the priority order of the notification setting terminals, or may be registered in the order in which connection requests are made.

  The registration unit 33 can also register the network ID of the network to which the connection waiting terminal is connected. In this way, the registration unit 33 can register connection waiting information by making a connection request to the request destination terminal device for each request destination terminal device and registering the rejected request source terminal device. After registering the connection waiting information, the registration unit 33 inputs a registration notification for notifying that the connection waiting information has been registered to the notification unit 32. The registration notification includes the terminal ID of the request destination terminal device.

  On the other hand, when the request destination terminal device accepts a connection request from the request source terminal device and the connection is established, the registration unit 33 determines the connection establishment and both the request source terminal device and the request destination terminal device as a result of the connection request. The address and the network ID of the network to which the request source terminal device is connected are acquired. The registration unit 33 registers the address of the request source terminal device, the network ID, and the use address of the request destination terminal device in the field of the communicating terminal in the storage area of the request destination terminal device.

  At this time, the registration unit 33 compares the address of the request source terminal device with the address of the terminal waiting for connection. The registration unit 33 determines that the connection waiting terminal has established the connection when the terminal device that has established the connection matches the connection waiting terminal, and deletes the connection waiting terminal address and network ID from the connection waiting terminal field. To do.

  Also, the registration unit 33 acquires a connection release notification from the exchange 40 via the communication unit 31. The connection release notification includes the address of the request source terminal device and the terminal ID of the request destination terminal device. The registration unit 33 deletes the communicating terminal in response to the connection release notification. After deleting the communicating terminal, the registration unit 33 inputs a connection release notification to the notification unit 32. In this manner, the registration unit 33 updates the connection control information database 34 based on connection establishment or connection release by the connection waiting terminal.

  The notification unit 32 performs at least one of notification of connection waiting information to the request destination terminal apparatus or notification of connection release to the request source terminal apparatus based on the connection waiting information. The notification unit 32 may notify the connection waiting information when the connection waiting information is registered in the connection control information database 34 or may be triggered by the connection release. The notification unit 32 notifies the connection release when the connection is released.

  The notification unit 32 acquires a registration notification and a connection release notification from the registration unit 33. When the notification unit 32 acquires the registration notification and notifies the connection waiting information at the time of registration of the connection waiting information, the notification unit 32 acquires the connection waiting information from the field of the connection waiting terminal in the connection control information database 34, and receives the connection waiting information. Is notified to the requested terminal device. The notification of the connection waiting information can include the address of the request source terminal device, the network ID, and the like.

  When the notification unit 32 acquires the connection release notification, the notification unit 32 searches the connection control information database 34 based on the terminal ID of the request destination terminal device included in the connection release notification, and there is a connection waiting terminal for the request destination terminal device. Judge whether to do. If the information is not registered in the field of the connection waiting terminal and it can be determined that there is no connection waiting terminal, the notification unit 32 does not notify. When the address of the request source terminal device is registered in the connection waiting terminal field, the notification unit 32 performs at least one of notification of connection wait information or notification of connection release to the request source terminal device. be able to.

  When there are a plurality of connection waiting terminals, the notification unit 32 notifies the connection waiting information of the connection waiting terminal having a higher priority according to the priority order, and notifies the connection release in order from the connection waiting terminal having the higher priority order. You may go. The notification unit 32 may perform notification in the order in which connection requests are made. Furthermore, the notification unit 32 may perform notification in consideration of the traffic situation of the network. For example, the notification unit 32 can cancel the notification when the traffic load is high, or limit the number of notifications when there are a plurality of connection waiting terminals.

Furthermore, the notification unit 32 may notify the connection release based on the performance of the request source terminal device. For example, the notification unit 32 refers to the connection control information database 34, and
Check the connection status of the request source terminal device. The notification unit 32 may cancel the connection release notification when the current number of connections of the request source terminal device has reached the connectable number. The switching center 40 rejects the connection request from the request source terminal device or makes a call to the request destination terminal device based on the connection request in accordance with the instruction from the connection control device 30. The switching center 40 receives the connection request from the request source terminal device and the result of the connection request (result of the call made to the request destination terminal device based on the connection request according to the instruction from the connection control device 30), connection Release notification is provided to the connection control device 30.

  As illustrated in FIG. 3, the mobile station 10 includes a communication unit 11, a control unit 12, an input unit 13, a display unit 14, and a storage unit 15. The personal computer 20a, the server 20b, and the mobile station 20c have substantially the same configuration. The communication unit 11 communicates with terminal devices such as the personal computer 20a, the server 20b, and the mobile station 20c, the connection control device 30, and the exchange 40.

  When the mobile station 10 becomes a request destination terminal device, the communication unit 11 serves as a receiving unit that receives notification of connection waiting information regarding a connection request of a request source terminal device that is rejected because the number of connectable terminal devices is exceeded. Function. When the mobile station 10 becomes a request source terminal device, the communication unit 11 releases the connection when the connection request of the request destination terminal device is released if the connection request is rejected because the number of connectable terminals of the request destination terminal device is exceeded. It functions as a receiving unit that receives the notification.

  The communication unit 11 inputs the received connection waiting information notification or connection release notification to the control unit 12. When the mobile station 10 becomes the request destination terminal device, the control unit 12 makes a connection request to the request source terminal device based on the notification of the connection waiting information. When the mobile station 10 becomes the request source terminal device, the control unit 12 issues a connection request to the request destination terminal device based on the connection release notification.

  The control unit 12 may perform control based on notification of all connection wait information and connection release, and whether or not to issue a connection request when there is a connection wait information notification or a connection release notification. Control may be performed based on a determination criterion for determining the above. As a determination criterion, for example, in the case of connection waiting information or a connection release notification regarding a terminal device having a priority higher than a predetermined order, a connection request is made. When the load status of the communication unit 11 or the control unit 12 is lower than a predetermined level, In the case of a connection release request or a connection release notification, a connection request can be set if the importance of the first connection request is greater than or equal to a predetermined value. The storage unit 15 stores the determination criteria. When acquiring the notification from the communication unit 11, the control unit 12 refers to the storage unit 15 and can determine whether or not a connection request is possible based on the determination criterion. According to this, the mobile station 10 can automatically make a connection request.

  Further, the control unit 12 may output a notification of connection waiting information and a notification of connection release acquired from the communication unit 11 to the display unit 14. The display unit 14 displays the notification content. In this case, the user of the mobile station 10 can determine whether to make a connection request based on the notification content displayed on the display unit 14. When the user determines to make a connection request, the user inputs a connection request instruction to the input unit 13. The input unit 13 acquires a connection request instruction from the user and inputs the instruction to the control unit 12. The control unit 12 makes a connection request based on a connection request instruction by a user input.

  Next, connection control using the connection control system 100 will be described in more detail with reference to FIGS. 4 to 10, an example will be described in which the personal computer 20a, the server 20b, and the mobile station 20c are requesting terminal devices, and the mobile station 10 is a requesting terminal device. The connection control information database 34 held by the connection control device 30 is also shown. The number of connectable mobile stations 10 is 2, the user ID is “UA”, and the terminal ID is “MA”.

  Also, network IDs “X”, “Y”, and “Z” are registered as notification setting terminals in the storage area of the connection control information database 34 whose user ID is “UA”. Network IDs “X”, “Y”, and “Z” are assigned to the wireless LAN 60a, the Internet 60b, and the mobile communication network 60c, respectively. Further, since the connectable number is 2, the fields of the communicating terminal 1 and the communicating terminal 2 are provided.

  In FIG. 4, the mobile station 10 and the personal computer 20a are communicating. Therefore, in the field of the terminal 1 in communication of the connection control information database 34, the address “aaa” of the personal computer 20a, the network ID “X” of the wireless LAN to which the personal computer 20a is connected, and the mobile station 10 are the personal computer 20a. The use address “xxx” used for the communication is registered.

  In the state of FIG. 4, when the server 20b makes a connection request as shown in FIG. 5, since the number of connections of the mobile station 10 has not reached the connectable number, the connection between the mobile station 10 and the server 20b is established. . The registration unit 33 of the connection control device 30 includes the address “bbb” of the server 20b, the network ID “Y” of the Internet 60b to which the server 20b is connected, the mobile station 10 in the field of the communicating terminal 2 in the connection control information database 34. Registers the use address “yyy” used for communication with the server 20b.

  In the state of FIG. 5, the mobile station 20c makes a connection request as shown in FIG. For example, the mobile station 20c makes a connection request for transmitting a message directly to the mobile station 10 without using a message server. At this time, the number of connections of the mobile station 10 has already reached the connectable number. Therefore, the connection request from the mobile station 20c is rejected as a result of exceeding the connectable number of the mobile station 10 which is the request destination terminal device. The registration unit 33 acquires the connection rejection, the address “ccc” of the mobile station 20 c, and the network ID “Z” of the mobile communication network 60 c to which the mobile station 20 c is connected from the switching center 40. The registration unit 33 registers the address “ccc” of the mobile station 20 c and the network ID “Z” of the mobile communication network 60 c to which the mobile station 20 c is connected in the connection waiting terminal field of the connection control information database 34.

  In the state of FIG. 6, as shown in FIGS. 7 and 9, when the communication between the mobile station 10 and the personal computer 20a is completed and the connection is released, the mobile station 10 can establish a new connection. Become. The registration unit 33 of the connection control device 30 releases the connection between the mobile station 10 and the personal computer 20a, and the address “aaa” of the personal computer 20a from the “communication terminal 1” field of the connection control information database 34, The network ID “X” and the use address “xxx” of the wireless LAN to which the personal computer 20a is connected are deleted.

  At this time, the notification unit 32 of the connection control device 30 at least one of notification of connection waiting information to the mobile station 10 as shown in FIG. 7 or notification of connection release to the mobile station 20c as shown in FIG. One can do.

  When notifying the connection waiting information, the notifying unit 32 refers to the connection waiting terminal field of the connection control information database 34, and as the connection waiting information, the address “ccc” of the mobile station 20c that is the connection waiting terminal, and the movement The network ID “Z” of the mobile communication network 60c to which the station 20c is connected is acquired. The notification unit 32 notifies the mobile station 10a of the connection waiting information acquired as shown in FIG.

  Then, as illustrated in FIG. 8, the control unit 12 of the mobile station 10a makes a connection request to the mobile station 20c based on the connection waiting information received by the communication unit 11. At this time, the control unit 12 can also decide not to make a connection request based on a criterion or the like. Alternatively, the control unit 12 may output the connection waiting information to the display unit 14 and make a connection request according to the user's judgment based on the information. The control unit 12 receives an address “zzz” to be used for communication with the mobile station 20c from the exchange 40. The control unit 12 makes a connection request to the mobile station 20c using the address “zzz”. Thereby, the mobile station 10 and the mobile station 20c establish a connection and start communication.

  Further, when notifying connection release, the notification unit 32 from the connection control information database 34, the terminal ID of the mobile station 10 that is the request destination terminal device that has been released from the connection, and the mobile station 20c that is the connection waiting terminal. The address “ccc” is acquired. As illustrated in FIG. 9, the notification unit 32 notifies the mobile station 20 c of the terminal ID of the mobile station 10 that is the request destination terminal device using the address “ccc”, and notifies the connection release.

  Then, as illustrated in FIG. 10, the control unit 12 of the mobile station 20 c makes a connection request to the mobile station 10 based on the connection release notification received by the communication unit 11. At this time, the control unit 12 can also decide not to make a connection request based on a criterion or the like. Alternatively, the control unit 12 may output the connection waiting information to the display unit 14 and make a connection request according to the user's judgment based on the information. In response to the connection request from the mobile station 20c, the switching center 40 assigns to the mobile station 10 an address “zzz” used for communication with the mobile station 20c, and causes the mobile station 10 to receive a connection request from the mobile station 20c. Then, the mobile station 10 and the mobile station 20c establish a connection and start communication.

  As shown in FIGS. 8 and 10, when the connection between the mobile station 10 and the mobile station 20 c is established, the registration unit 33 of the connection control device 30 relates to the mobile station 20 c from the connection waiting terminal field of the connection waiting information database 34. Delete connection wait information. Further, the address “ccc” of the mobile station 20c, the network ID “Z” of the mobile communication network 60c to which the mobile station 20c is connected, and the mobile station 10 are used for communication with the mobile station 20c in the field of the terminal 1 in communication. The use address “zzz” is registered.

  The notification unit 32 may notify the connection waiting information to the mobile station 10 when the connection is released as shown in FIG. 7, and when the connection waiting information is registered in the connection control information database 34 as shown in FIG. The mobile station 10 may be notified. According to this, the mobile station 10 can determine whether or not a connection request can be made immediately when the mobile station 10 releases the connection, and can make a connection request. Therefore, it is possible to establish a connection more quickly. The notification unit 32 may perform both connection wait information notification and connection release notification, or may perform connection wait information and connection release notification a plurality of times.

(Connection control method)
Next, the procedure of the connection control method will be described. First, FIG. 11 shows a case of notifying connection waiting information. The connection control device 30 acquires a result for the connection request from the exchange 40 (S101). The connection control device 30 determines whether the result of the connection request is establishment of a new connection, rejection of the connection, or release of the connection (S102). When establishing a new connection, the connection control device 30 registers information in the field of the communicating terminal in the connection control information database 34 based on the acquired result (S103). When the connection is released, the connection control device 30 notifies the request destination terminal device of the connection waiting information based on the connection waiting information held in the connection control information database 34 (S104). If the connection is rejected, the connection control device 30 registers information in the connection waiting terminal field of the connection control information database 34 based on the acquired result (S105).

  Next, FIG. 12 shows a case of notifying connection release. The connection control device 30 performs steps (S201) to (S203) and (S205) similar to steps (S101) to (S103) and (S105). In the case of connection release, the connection control device 30 notifies the request source terminal device of the connection release of the request destination terminal device based on the connection waiting information held in the connection control information database 34 (S204).

(effect)
According to the connection control system 100, the connection control device 30, the mobile station 10, the personal computer 20a, the server 20b, the mobile station 20c, and the connection control method, the connection request of the request source terminal device can be connected to the request destination terminal device. When the number is rejected because it exceeds the number, connection waiting information related to the connection request can be stored. Then, the connection control system 100 can prompt connection by performing at least one of notification of connection waiting information to the request destination terminal device or notification of connection release to the request source terminal device. Therefore, either the request source terminal device or the request destination terminal device that has received the notification can determine whether or not a connection request is necessary based on the acquired notification, and can make a connection request. Therefore, according to the connection control system 100, it is possible to quickly establish a necessary connection when the connection is released without waiting for a retransmission cycle or the like. In addition, the connection control system 100 can perform the control.

  In addition, according to the terminal devices such as the mobile station 10, the personal computer 20a, the server 20b, and the mobile station 20c, it becomes a request destination terminal device and rejects because the connection request of the request source terminal device exceeds the connectable number of the request destination terminal device. In such a case, the connection request information can be received upon the release of the connection of the request destination terminal device, and it can be determined whether or not a connection request is necessary based on the received notification and the connection request can be made.

  Further, terminal devices such as the mobile station 10, personal computer 20a, server 20b, and mobile station 20c are request source terminal devices, and the connection request of the request source terminal device is rejected because it exceeds the connectable number of the request destination terminal device. In this case, it is possible to receive a connection release notification when the request destination terminal apparatus releases the connection, determine whether or not a connection request is necessary based on the received notification, and make a connection request. Therefore, according to the terminal devices such as the mobile station 10, the personal computer 20a, the server 20b, and the mobile station 20c, it becomes possible to quickly establish a necessary connection when the connection is released.

It is a figure which shows the structure of the connection control system which concerns on embodiment of this invention. It is a block diagram which shows the structure of the connection control apparatus which concerns on embodiment of this invention. It is a block diagram which shows the structure of the mobile station which concerns on embodiment of this invention. It is a figure showing the state where the number of connections concerning an embodiment of the invention is 1. It is a figure which shows the state where the number of connections which concerns on embodiment of this invention is two. It is a figure which shows the state at the time of the connection refusal which concerns on embodiment of this invention.

FIG.
It is a figure which shows the notification to the request destination terminal apparatus which concerns on embodiment of this invention. It is a figure which shows the connection establishment by the notification to the request destination terminal apparatus which concerns on embodiment of this invention. It is a figure which shows the notification to the request origin terminal device which concerns on embodiment of this invention. It is a figure which shows the connection establishment by the notification to the request origin terminal device which concerns on embodiment of this invention. It is a flowchart which shows the procedure of the connection control method which concerns on embodiment of this invention. It is a flowchart which shows the other procedure of the connection control method which concerns on embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10, 20c Mobile station 11 Communication part 12 Control part 13 Input part 14 Display part 15 Storage part 20a Personal computer 20b Server 30 Connection control device 31 Communication part 32 Notification part 33 Registration part 34 Connection control information database 35 Call control part 40 Switching office 50, 60c Mobile communication network 60a Wireless LAN
60b Internet 100 connection control system

Claims (2)

A request destination terminal device that can be connected simultaneously with a plurality of terminal devices, a request source terminal device that requests connection to the request destination terminal device, and a connection between the request destination terminal device and the request source terminal device A connection control system comprising a connection control device for controlling
The connection control device includes:
A connection control information storage unit for storing information of the request source terminal device as connection wait information regarding a connection request of the request source terminal device rejected for exceeding the connectable number of the request destination terminal device;
In response to the connection release in the request destination terminal device, based on the connection waiting information, a notification unit to notify the connection waiting information to the request destination terminal device,
A registration unit that registers the connection waiting information in the connection control information storage unit when the connection request is rejected to exceed the connectable number ;
The request destination terminal device is:
A communication unit that communicates with a connected terminal device and receives a notification of the connection waiting information;
A control unit that makes a connection request to the request source terminal device based on the notification of the connection waiting information,
The control unit determines whether or not the load status of the communication unit and the control unit is equal to or lower than a predetermined value when the connection waiting information is notified, and the load status is equal to or lower than the predetermined value. A connection control system that automatically issues a connection request to the request source terminal device. A terminal device that can be connected simultaneously with a plurality of terminal devices,
A communication unit that communicates with a connected communication terminal and receives notification of information on the request source terminal device as connection wait information regarding a connection request of a request source terminal device that has been rejected because the number of connections is exceeded.
A control unit that makes a connection request to the request source terminal device based on the notification of the connection waiting information,
The control unit determines whether or not the load status of the communication unit and the control unit is equal to or lower than a predetermined value when the connection waiting information is notified, and the load status is equal to or lower than the predetermined value. The terminal device automatically makes a connection request to the request source terminal device.

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