JP2005086544A - Communication control system and communication control method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a communication control system and a communication control method in which transmission of a connection request with a destination communication terminal to a communication network is reduced when communication with the destination communication terminal is impossible. <P>SOLUTION: The communication control system comprises a reservation processing section 101 for acquiring reservation information consisting of information for specifying at least a destination communication terminal and connection conditions with the destination communication terminal from a source communication terminal, a service start condition judging section 105 for judging variation of the destination communication terminal into a state conforming to the connection conditions based on the reservation information, and a call control section 301 and a connection coupling section 303 for setting a communication path by calling the source communication terminal and the destination communication terminal when the destination communication terminal is judged to have changed into a state conforming to the connection conditions. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a communication control system and a communication control method for controlling communication between a transmission source communication terminal and a call destination communication terminal.

  Conventionally, in a communication network such as a telephone exchange network, a source communication terminal identifies a destination communication terminal and sends a connection request to the communication network to the communication network, that is, makes a call. A communication path between communication terminals is set.

  In such a conventional communication network, the source communication terminal cannot recognize whether or not the communication path with the destination communication terminal can be set at the time of transmitting the connection request to the communication network. For this reason, even when the communication network cannot process the connection request transmitted from the source communication terminal, there is a problem that the connection request is transmitted from the communication terminal as needed.

Therefore, when the connection request cannot be processed because the communication network is congested, the communication reservation device deployed on the communication network specifies the waiting time until the call is re-sent to the communication terminal of the transmission source. Then, it is proposed that the number of connection requests that cannot be processed by the communication network is reduced by transmitting the connection request again after the specified waiting time by the communication terminal of the transmission source (for example, patents). Reference 1).
JP 2001-251424 A

  However, in the background art described above, when the communication network cannot process a connection request from the caller due to the state of the callee communication terminal, for example, the communication network during communication of the callee communication terminal. There is a problem that the number of connection requests transmitted to the destination communication terminal cannot be reduced.

  In addition, when the destination communication terminal is a wireless communication terminal such as a mobile phone terminal, the wireless communication terminal is not located in an area where communication with the wireless base station is possible, or the wireless communication terminal Even when the power is not turned on, a connection request to the wireless communication terminal is transmitted to the communication network.

  Therefore, the present invention has been made in view of the above points, and when the communication terminal of the destination cannot communicate, a connection request with the communication terminal of the destination is transmitted to the communication network. It is an object of the present invention to provide a communication control system and a communication control method that reduce this.

  In order to solve the above problems, the present invention has the following features. First, a first feature of the present invention is a reservation information acquisition unit that acquires reservation information composed of at least information specifying a destination communication terminal and a connection condition with the destination communication terminal from a transmission source communication terminal. A connection condition determination unit that determines whether or not the state of the destination communication terminal has changed to a state that matches the connection condition based on the reservation information acquired by the reservation information acquisition unit, and the connection When it is determined by the condition determining unit that the state of the destination communication terminal has changed to a state that matches the connection condition, a call is made to the source communication terminal, and the first communication connection is established with the source communication terminal. In addition to setting, a call is made to the destination communication terminal, a second communication connection is set with the destination communication terminal, and the first communication connection and the second communication connection are combined. And summarized in that a communication control system and a signal path setting unit.

  According to such a feature, the connection condition determination unit identifies information (for example, if the destination communication terminal is a telephone terminal, the telephone number of the telephone terminal) and a connection condition (for example, The state of the destination communication terminal is determined so that the state of the destination communication terminal matches the connection condition. When changed, the communication channel setting unit sets a communication channel between the communication terminal of the transmission source and the communication terminal of the reception destination.

  For this reason, when the destination communication terminal is in a state where communication is not possible, the user of the source communication terminal is reduced from transmitting a connection request with the destination communication terminal to the communication network. be able to.

  Further, according to this feature, when the destination communication terminal cannot communicate, the user of the source communication terminal can transmit a connection request with the destination communication terminal. Therefore, the ratio of the number of connection completions to the number of connection requests, that is, the connection rate is improved, and an increase in the load on the communication network due to connection requests that cannot be processed can be suppressed.

  Further, according to such a feature, when the communication control system changes the state of the destination communication terminal to a state that matches the connection condition, the communication control system sets a communication path between the transmission source and the destination communication terminal. The user of the source communication terminal does not need to transmit a connection request to the destination communication terminal as appropriate, that is, does not need to make a re-call, thus improving the convenience for the user.

  The gist of a second feature of the present invention is that, in the first feature of the present invention, the communication path setting unit sets the first communication connection after setting the second communication connection. .

  According to this feature, since a communication connection with the destination communication terminal is set, and then a communication connection with the source communication terminal is set, the state of the destination communication terminal is set when the communication connection is set. When the communication cannot be performed again, it is possible to prevent setting the communication connection with the communication terminal as the transmission source.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, when the second communication connection cannot be set by the communication path setting unit, the state of the destination communication terminal is changed to the state of the destination communication terminal. The gist of the present invention is to further include a state notification transmission unit for notifying the transmission source communication terminal.

  According to this feature, when the connection between the caller communication terminal and the callee communication terminal cannot be executed, the caller communication terminal is notified of the state of the callee communication terminal (for example, during a call). Therefore, the user of the caller communication terminal can recognize the state of the callee communication terminal.

  A fourth feature of the present invention is a reservation information acquisition unit that acquires reservation information composed of at least information specifying a destination communication terminal and a connection condition with the destination communication terminal from the transmission source communication terminal; Based on the reservation information acquired by the reservation information acquisition unit, a connection condition determination unit that determines whether or not the state of the destination communication terminal has changed to a state that matches the connection condition, and the connection condition determination When the communication unit determines that the state of the destination communication terminal has changed to a state that matches the connection condition, a communication enable notification indicating that communication with the destination communication terminal is possible is sent to the source communication terminal. The gist of the present invention is a communication control system including a communicable notification transmission unit for transmission.

  According to such a feature, since the “communication enabled notification” is notified to the caller communication terminal, the user of the caller communication terminal can communicate with the callee communication terminal or information on the callee communication terminal. It is possible to quickly recognize that the transmission of the message has become possible.

  A fifth feature of the present invention is a communication control method used in a communication control system for controlling communication between a caller communication terminal and a callee communication terminal, from the caller communication terminal to at least the callee communication terminal. Acquiring reservation information composed of information for identifying the connection destination and a connection condition with the destination communication terminal, and based on the acquired reservation information, the state of the destination communication terminal is set to the connection condition. A step of determining whether or not the state has changed to a matching state, and if the state of the destination communication terminal has been changed to a state that matches the connection condition by the step of determining, the source communication terminal A first communication connection with the source communication terminal, and a call to the destination communication terminal to establish a second communication connection with the destination communication terminal. Constant to be summarized as further comprising a step of coupling the first communication connection and the second communication connection.

  ADVANTAGE OF THE INVENTION According to this invention, the communication control system and communication control method which reduce that a connection request | requirement with the said destination communication terminal is transmitted with respect to a communication network when the destination communication terminal cannot communicate Can be provided.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Network configuration including the communication control system according to the present embodiment)
FIG. 1 shows an outline of a network configuration including a communication control device 100 configuring a communication control system according to the present embodiment and a communication node 300a.

  As shown in the figure, the communication control apparatus 100 monitors the state of the communication node 300a, the communication network composed of the communication nodes 300a to 300c, and the communication terminals 500 and 510 using the communication network. The network management apparatus 200 is connected so as to be able to communicate.

  The communication control apparatus 100 determines the communication path between the caller communication terminal and the callee communication terminal based on the reservation information for communication with the callee communication terminal and the change in the status of the callee communication terminal. Is requested to the communication node 300a.

  The communication node 300a is connected to the communication node 300b and the communication node 300c, and provides a communication service for the communication terminal 500 and the communication terminal 510 together with the communication node 300b and the communication node 300c. Based on a request from the control device 100, a communication path between the communication terminal 500 and the communication terminal 510 is set.

  In this embodiment, the communication node 300b controls a call to the communication terminal 500 that uses the communication network configured by the communication nodes 300a to 300c and a call generated by the communication terminal 500 via the radio base station 400. It consists of a communication control station (RNC) and an exchange. In the present embodiment, the communication terminal 500 is, for example, a PDC (Personal Digital Celluar) system or a CDMA (Code Division Multiple Access) system mobile phone terminal.

  In this embodiment, the communication node 300c is configured by a subscriber line switch that connects the communication terminal 510 via a metallic subscriber line, a transmission device that transmits voice signals, control signals, and the like. In addition, the communication terminal 510 is a general subscriber telephone terminal, a so-called fixed telephone terminal in the present embodiment.

  In this embodiment, the communication nodes 300a to 300c constitute a communication network that can be used by the communication terminal 500 that is a mobile phone terminal and the communication terminal 510 that is a fixed phone terminal. Of course, it may be configured by a larger number of communication nodes, that is, an exchange or a transmission device.

  The network management apparatus 200 acquires and manages information indicating the state of the communication network, for example, an alarm transmitted from the exchange or the transmission apparatus or the state of the exchange from the communication nodes 300a to 300c. is there. In the present embodiment, the network management device 200 is configured such that information indicating the states of the communication terminal 500 and the communication terminal 510, for example, the communication terminal 500 is based on alarms and information acquired from the communication nodes 300a to 300c. Information indicating whether or not the wireless base station 400 is within communication range and information indicating an idle state, that is, information indicating that communication is not being performed are transmitted to the communication control apparatus 100.

(Logical block configuration of communication control device and communication device)
Next, the logical block configuration of the communication control device and the communication device according to the present embodiment will be described.

  As shown in FIG. 2, the communication control apparatus 100 includes a reservation processing unit 101, a reservation information storage unit 103, a service activation condition determination unit 105, a service activation notification unit 107, and a call processing request unit 109. ing. In the present embodiment, the communication control device 100 is configured using a single hardware, that is, a server computer. However, the communication control device 100 uses different hardware for each block, and It may be configured.

  The reservation processing unit 101 includes, from the communication terminal of the transmission source, for example, the communication terminal 510, a reservation configured by information for identifying at least the communication terminal of the destination, for example, the communication terminal 500, and a connection condition with the communication terminal 500. In this embodiment, a reservation information acquisition unit is configured. Hereinafter, in the present embodiment, the communication terminal 510 will be described as a caller communication terminal, and the communication terminal 500 as a callee communication terminal.

  Specifically, the reservation processing unit 101, from the communication terminal 510, for example, a telephone number of the communication terminal 500 and a connection condition such that the communication terminal 500 connects to the communication terminal 500 when the communication terminal 500 moves into the communication range of the radio base station 400. Reservation information consisting of

  The reservation processing unit 101 communicates depending on a state in which the communication terminal 510 transmits a connection request to the communication terminal 500 to the communication network, that is, makes a call, but the communication terminal 500 is not in the communication area. If the communication path between the terminal 500 and the communication terminal 510 cannot be set, the communication terminal 510 makes a reservation between the communication terminal 510 and the communication node 300a by using the communication connection set in accordance with the call. Information can be acquired.

  Furthermore, the reservation processing unit 101 can also acquire reservation information in response to a call addressed to the communication control apparatus 100 by the communication terminal 510.

In addition, the reservation processing unit 101 acquires a reservation information from the communication terminal 510 by using a voice talkie transmitted to the communication terminal 510 and a PB signal transmitted from the communication terminal 510, Can provide a packet communication method using HTTP (Hyper Text Transfer Protocol) or SIP (Session Initiation Protocol). The communication terminal transmits the reservation information, the mobile phone when a terminal, retrieving the reservation information using the Unstructured Supplementary Service Data (USSD) defined by 3GPP (3 ^rd Generation Partnership Project) Good.

  The reservation information storage unit 103 stores reservation information acquired by the reservation processing unit 101. Here, FIG. 3 shows an example of reservation information stored in the reservation information storage unit 103.

  As shown in the figure, the reservation information includes the telephone number of the “reserving person” (reserving person A in the figure), that is, the telephone number (03-xxxx-xxxx) of the communication terminal 510 and the “destination”, that is, The telephone number (090-yyyy-yyyy) of the communication terminal 500 and the “connection condition” with the communication terminal 500. The reservation information is managed for each reservation person, and may have a plurality of combinations of “destination” and connection conditions for the destination. Furthermore, for a single “destination”, a plurality of “connection conditions”, for example, a case where communication by the communication terminal of the destination is terminated and a designated connection date and time may be designated.

  In addition, in order to transmit a “communication notification” indicating that communication with the communication terminal 500 is possible to the user of the communication terminal 510, the reservation information storage unit 103 includes information on “notification destination”, for example, If the communication terminal 510 has a function for sending and receiving e-mail, an e-mail address assigned to the communication terminal 510 can be registered.

  Furthermore, as shown in the figure, when the connection condition included in the reservation information is satisfied, the communication control apparatus 100 can execute one of the following processes. That is, (1) a notification is transmitted to the communication terminal 510, (2) a notification is transmitted to the communication terminal 510, a communication path between the communication terminal 500 and the communication terminal 510 is set, or (3) the communication terminal 510 The communication path between the communication terminal 500 and the communication terminal 510 is set without sending a notification to the terminal.

  In addition, the reservation information storage unit 103 is a communication channel type set between the communication terminal 500 and the communication terminal 510, for example, a voice communication channel and a video communication channel applied to a voice communication channel, a videophone service, and the like. Alternatively, the type of packet communication path may be stored as reservation information.

  Further, the information specifying the caller communication terminal and the callee communication terminal may not be the telephone number of the telephone terminal. For example, when the communication terminal is an Internet telephone terminal using SIP, URI (Uniform Resource Indicator) can be used. Further, the reservation information storage unit 103 manages information that associates the telephone number of the communication terminal with the ID information of the user who uses the communication terminal, for example, the nickname of the user, and acquires the ID information from the communication terminal. And may be stored.

  Based on the reservation information acquired by the reservation processing unit 101, the service activation condition determination unit 105 changes the state of the destination communication terminal, that is, the communication terminal 500, to a state that matches the connection condition included in the reservation information. In this embodiment, a connection condition determination unit is configured.

  Specifically, the service activation condition determination unit 105 transmits the information based on the reservation information acquired by the reservation processing unit 101 so that the information is transmitted when the state of the communication terminal 500 is changed. To request.

  Further, the service activation condition determination unit 105 uses the information indicating the state of the communication terminal 500 transmitted from the network management apparatus 200 to display the “connection condition” in which the state of the communication terminal 500 is stored in the reservation information storage unit 103. Is determined. Further, the service activation condition determination unit 105 transmits to the service activation notification unit 107 or the call processing request unit 109 that the state of the communication terminal 500 matches the connection condition.

  In the present embodiment, it is determined whether or not the information indicating that the state of the communication terminal 500 has changed from the network management apparatus 200, that is, whether or not the “connection condition” is met when an event occurs. For example, the service activation condition determination unit 105 constantly monitors information on the communication terminal 500 transmitted from the network management apparatus 200 or the communication node 300a as needed, and determines whether or not the “connection condition” is met. Good.

  The service activation notifying unit 107 indicates that communication with the communication terminal 500 is possible when the service activation condition determining unit 105 determines that the state of the communication terminal 500 has changed to a state that matches the connection condition. Notification ”is transmitted to the communication terminal 510, and in this embodiment, a communicable notification transmission unit is configured.

  In addition, when the service activation notifying unit 107 is notified from the communication node 300a that the connection between the communication terminal 500 and the communication terminal 510 based on the connection request by the call processing requesting unit 109 cannot be executed, the service activation notification unit 107 The state is notified to the communication terminal 510, and in this embodiment, a state notification transmission unit is configured.

  Specifically, the service activation notifying unit 107 transmits an e-mail or requests the communication node 300a to set a communication path with the communication terminal 510, and sends a voice talkie using the set communication path to the communication terminal 510. , It is possible to notify that communication with the communication terminal 500 is possible or the state of the communication terminal 500.

  When the service activation condition determination unit 105 determines that the state of the communication terminal 500 has changed to a state that matches the connection condition, the call processing request unit 109 calls the communication terminal 500 and the communication terminal 510 to perform communication. The communication node 300a is requested to set a communication path between the terminal 500 and the communication terminal 510.

  Next, the logical block configuration of the communication node 300a will be described. As illustrated in FIG. 2, the communication node 300 a includes a call control unit 301, a connection coupling unit 303, and a service start request unit 305.

  The call control unit 301 makes a call to the communication terminal 500 and the communication terminal 510 based on a request from the call processing request unit 109, and communicates with the communication terminal 500 (second communication connection) and the communication terminal 510. The first communication connection (first communication connection) is set. In the following description of the present embodiment, the communication connection is set between the communication node 300a and the communication terminal, and the communication path is set between the communication terminals.

  The connection combining unit 303 combines communication connections set by the call control unit 301 and sets a communication path between the communication terminal 500 and the communication terminal 510.

  In the present embodiment, when the call control unit 301 and the connection coupling unit 303 determine that the state of the communication terminal 500 has changed to a state that matches the connection condition by the service activation condition determination unit 105, the communication terminal 510, the communication terminal 510 and the first communication connection are set, the communication terminal 500 is called, the communication terminal 500 and the second communication connection are set, and the first communication connection and the second communication connection are set. A communication path setting unit for connecting the communication connection is configured.

  The service start request unit 305 has a specific control in the reservation information stored in the reservation information storage unit 103 when the communication path between the communication terminal 500 and the communication terminal 510 is set by the connection combining unit 303. Is indicated to use a necessary service (for example, a TV phone service), the control system of the service is requested to start necessary control.

(Communication control method)
Next, a communication control device and a communication control method using the communication device according to the present embodiment described above will be described.

  In FIG. 4, the communication terminal 510 reserves communication with the communication terminal 500, which is the destination communication terminal, in the communication control apparatus 100, and the communication control apparatus 100 and the communication node 300 a are reserved information designated by the communication terminal 510. And a communication sequence for transmitting a connectable notification to the communication terminal 510 and setting a communication path between the communication terminal 510 and the communication terminal 500 based on the change in the state of the communication terminal 500.

  In step S <b> 10, the communication terminal 510 calls the communication control apparatus 100 and designates the telephone number and mail address of the communication terminal 500 that is the destination communication terminal, and the connection conditions with the communication terminal 500. Here, it is assumed that communication terminal 510 designates “notification / connection when communication terminal 500 moves into communication range” (see FIG. 3) as the “connection condition”. Note that, as described above, the communication terminal 510 can specify a connection condition or the like using PB signal transmission, packet communication, or USSD in accordance with a voice talkie transmitted from the communication control apparatus 100.

  In step S20, the communication control apparatus 100 acquires the content specified by the communication terminal 510 and stores the content as reservation information.

  In step S30, the communication control apparatus 100 stores the reservation information and notifies the communication terminal 510 that the reservation for communication with the communication terminal 500 has been completed.

  In step S40, the communication control apparatus 100 requests the network management apparatus 200 to transmit information indicating a change in the state of the communication terminal 500 based on the reservation information.

  In step S50, the network management device 200 indicates information indicating a change in the state of the communication terminal 500, here information indicating that the communication terminal 500 acquired via the communication node 300b and the communication node 300a has moved into the communication area. Is transmitted to the communication control apparatus 100.

  In step S <b> 60, the communication control apparatus 100 determines whether the information transmitted from the network management apparatus 200 matches the “connection condition” specified by the communication terminal 510. Here, as described above, since the communication terminal 510 sets “notification / connection when the communication terminal 500 moves into the communication range” as the “connection condition”, the communication control apparatus 100 specifies the designated “connection condition”. Is determined to match.

  In step S <b> 70, the communication control apparatus 100 transmits a “communication notice” indicating that communication with the communication terminal 500 is possible to the communication terminal 510. Specifically, the communication control apparatus 100 transmits an e-mail indicating that communication with the communication terminal 500 is possible to an e-mail address included in the reservation information.

  In step S80, when the user of the communication terminal 510 confirms that the “communication enable notification” has been received, the communication terminal 510 requests the communication control apparatus 100 to set a communication path with the communication terminal 500.

  In step S90, the communication control apparatus 100 requests the communication node 300a to set a communication path between the communication terminal 500 and the communication terminal 510.

  In step S100, the communication node 300a makes a call to the communication terminal 500 which is a communication terminal of the destination via the communication node 300b, and sets a communication connection with the communication terminal 500.

  In step S110, the communication node 300a calls the communication terminal 510, which is a communication terminal that is a call originator, via the communication node 300c, and sets up a communication connection with the communication terminal 510.

  In step S120, the communication node 300a combines the communication connections set in steps S100 and S110 to set a communication path between the communication terminal 500 and the communication terminal 510.

  In step S130, communication terminal 500 and communication terminal 510 start communication using the communication path set in step S120.

  Note that in step S70 described above, the communication control device 100 performs “communication notification” based on the connection condition included in the reservation information, that is, “notify / connect when the communication terminal 500 moves into the communication range”. ”Is transmitted to the communication terminal 510, but when the communication terminal 510 does not designate“ notification ”in the“ connection condition ”, the communication control apparatus 100 transmits the“ communication available notification ”in step S70 to the communication terminal 510. You don't have to.

  If the communication connection with the communication terminal 500 cannot be set in step S100 described above, that is, after the communication terminal 500 moves into the communication area in step S50, the communication connection is set in step S100. When the communication terminal 500 moves out of the communication range again, or when a communication path with another communication terminal is set, that is, when communication is in progress, the communication control apparatus 100 communicates with the communication terminal 500. Can be notified to the communication terminal 510.

  Further, in step S100, the communication node 300a sets a communication connection with the communication terminal 500 that is the destination communication terminal, and then in step S120, establishes a communication connection with the communication terminal 510 that is the source communication terminal. Therefore, it is possible to prevent the communication connection with the communication terminal 510 from being set even though the communication connection with the destination communication terminal cannot be set.

  In the above-described embodiment of the present invention, a description has been given of setting a communication path between telephone terminals by taking a telephone terminal as an example. However, the present invention is not limited to a telephone terminal, and a connection request is transmitted. Thus, the present invention can be applied to all communication networks that provide communication services for communication terminals that start communication.

(Example of change)
In the communication control method illustrated in FIG. 4, the communication terminal 510 makes a call to the communication control apparatus 100 and reserves communication with the communication terminal 500. However, the communication control method is changed as follows. be able to. That is, since the communication terminal 510 transmits a connection request with the communication terminal 500, that is, makes a call, but the communication terminal 500 cannot communicate, the communication path between the communication terminal 500 and the communication terminal 510 is set. When the setting cannot be made, the communication terminal 510 can also reserve communication with the communication terminal 500 in the communication control apparatus 100.

  FIG. 5 shows a communication sequence according to this modification.

  In step S210, the communication terminal 510 transmits a connection request with the communication terminal 500 to the communication node 300a via the communication node 300c, that is, makes a call to the communication terminal 500.

  In step S220, the communication node 300a sets a communication connection with the communication terminal 500 and sets a communication path between the communication terminal 500 and the communication terminal 510 via the communication node 300b. Is not in the communication range, the communication path setting process is canceled.

  In step S230, the communication node 300a notifies the communication control apparatus 100 that the processing of setting the communication path between the communication terminal 500 and the communication terminal 510 has been stopped. Further, the communication node 300a connects the communication connection set in step S210 to the communication control apparatus 100, and transmits the telephone number information of the communication terminal 500 to the communication control apparatus 100.

  In step S240, the communication control apparatus 100 transmits to the communication terminal 510 a message asking whether or not to reserve communication with the communication terminal 500 using the communication connection set in step S210, for example, using a voice talkie.

  In step S250, communication terminal 510 transmits a PB signal in accordance with a voice talkie from communication control apparatus 100, and specifies a connection condition with communication terminal 500. Note that, since the communication control apparatus 100 has acquired the telephone number information of the communication terminal 500 transmitted from the communication node 300a in step S230, in this case, the communication terminal 510 specifies the telephone number of the destination communication terminal. You don't have to.

  In step S260, the communication control apparatus 100 acquires the content specified by the communication terminal 510 and stores the content as reservation information.

  In step S270, the communication control apparatus 100 notifies the communication terminal 510 that the reservation information is stored and the reservation for communication with the communication terminal 500 is completed.

  Thereafter, processing similar to the communication sequence after step S40 shown in FIG. 4 is executed.

(Action / Effect)
According to the embodiment of the present invention described above, the reservation information configured by the service activation condition determination unit 105 of the communication control apparatus 100 including information for specifying the communication terminal 500 that is the communication terminal of the destination and the connection condition. Based on the communication terminal 500, and when the state of the communication terminal 500 changes to a state that matches the connection condition, the call control unit 301 and the connection coupling unit 303 of the communication node 300a And a communication path with the communication terminal 510 is set.

  For this reason, when the communication terminal 500 is in a state in which communication is not possible, the user of the communication terminal 510 which is the communication terminal of the transmission source is prevented from transmitting a connection request with the communication terminal 500 to the communication network. be able to.

  Furthermore, according to this embodiment, when the communication terminal 500 is in a state where communication cannot be performed, it is reduced that the user of the communication terminal 510 transmits a connection request with the communication terminal 500. The ratio of the number of connection completions to the number of requests, that is, the connection rate can be improved, and an increase in the load on the communication network due to connection requests that cannot be processed can be suppressed.

  Further, according to the present embodiment, when the state of the destination communication terminal changes to a state that matches the connection condition, the communication control device 100 and the communication node 300a are connected between the communication terminal 500 and the communication terminal 510. Therefore, the user of the communication terminal 510 does not need to appropriately transmit a connection request to the communication terminal 500, that is, does not need to be called again, so that the convenience of the user is improved.

  Furthermore, according to the present embodiment, when the communication terminal of the destination cannot communicate, when the communication terminal of the transmission source transmits a connection request, the communication control apparatus 100 transmits the connection request. Since the reservation information is acquired using the communication connection set to, even if the destination communication terminal cannot communicate, the communication connection can be used effectively, so that a so-called incomplete call is not generated. can do.

  Further, according to the present embodiment, even when a connection request with a plurality of identical communication terminals is transmitted to the communication network at the same time, the communication control apparatus 100 sets reservation information for communication with the communication terminal. Since it can be acquired, a plurality of connection requests with the same communication terminal can be processed in parallel.

  Furthermore, according to the present embodiment, information specifying the communication terminal of the transmission source and the destination can be registered as the reservation information with respect to the communication control apparatus 100. Therefore, the information is registered by the third party communication terminal. A communication path can be set between the communication terminals.

  That is, according to the present embodiment, the communication network autonomously sets a communication path or notifies that communication is possible according to a change in the state of the communication terminal of the destination. Can do.

It is a figure which shows schematic structure of the network containing the communication control apparatus and communication apparatus which concern on embodiment of this invention. It is a figure which shows the logical block structure of the communication control apparatus and communication apparatus which concern on embodiment of this invention. It is a figure which shows an example of the reservation information which concerns on embodiment of this invention. It is a figure which shows an example of the communication control method which concerns on embodiment of this invention. It is a figure which shows an example of the communication control method which concerns on the example of a change of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 ... Communication control apparatus, 101 ... Reservation processing part, 103 ... Reservation information storage part, 105 ... Service start condition determination part, 107 ... Service start notification part, 109 ... Call processing request part, 200 ... Network management apparatus, 300a, 300b , 300c ... communication node, 301 ... call control unit, 303 ... connection coupling unit, 305 ... service start request unit, 400 ... wireless base station, 500, 510 ... communication terminal

Claims (5)

A reservation information acquisition unit that acquires reservation information composed of at least information specifying a destination communication terminal and a connection condition with the destination communication terminal, from the transmission source communication terminal;
A connection condition determination unit that determines whether or not the state of the destination communication terminal has changed to a state that matches the connection condition, based on the reservation information acquired by the reservation information acquisition unit;
When it is determined by the connection condition determining unit that the state of the destination communication terminal has changed to a state that matches the connection condition, a call is made to the source communication terminal, and the first communication terminal and the first communication terminal A communication that sets a connection, calls the destination communication terminal, sets a second communication connection with the destination communication terminal, and combines the first communication connection and the second communication connection A communication control system comprising a path setting unit.   The communication control system according to claim 1, wherein the communication path setting unit sets the first communication connection after setting the second communication connection.   The communication device further comprises a state notification transmission unit for notifying the state of the destination communication terminal to the source communication terminal when the second communication connection cannot be set by the communication path setting unit. The communication control system according to 1 or 2. A reservation information acquisition unit that acquires reservation information composed of at least information specifying a destination communication terminal and a connection condition with the destination communication terminal, from the transmission source communication terminal;
A connection condition determination unit that determines whether or not the state of the destination communication terminal has changed to a state that matches the connection condition, based on the reservation information acquired by the reservation information acquisition unit;
When the connection condition determination unit determines that the state of the destination communication terminal has changed to a state that matches the connection condition, a communication enable notification indicating that communication with the destination communication terminal is possible is performed. A communication control system comprising: a communicable notification transmission unit that transmits to an original communication terminal. A communication control method used in a communication control system for controlling communication between a source communication terminal and a destination communication terminal,
Obtaining reservation information composed of at least information identifying the destination communication terminal and a connection condition with the destination communication terminal from the source communication terminal;
Determining whether the state of the destination communication terminal has changed to a state that matches the connection condition based on the acquired reservation information; and
When it is determined by the determining step that the state of the destination communication terminal has changed to a state that matches the connection condition, a call is made to the source communication terminal, and the source communication terminal and the first communication connection And a call to the destination communication terminal, setting a second communication connection with the destination communication terminal, and coupling the first communication connection and the second communication connection; A communication control method comprising:

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