JP2013197717A - Communication device, communication method and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the risk of line switchover not in time on receipt of the detection of quality deterioration when traffic abruptly increases, if the line switchover is made after the detection of deteriorated communication quality, in a communication device connected to a plurality of lines and capable of switching lines.SOLUTION: The communication device for communication by the connection to one of a plurality of networks includes: a detection unit for detecting information related to the particular event on the occurrence of a particular event; and a switchover unit for determining whether the connection target network is to be switched to another network according to information related to the detected particular event, and if switchover is determined, for switching over from the connection target network to the other network.

Description

  The present invention relates to a communication device, a communication method, and a program for performing communication via a network.

  In recent years, VoIP (Voice over Internet Protocol) calls using an IP (Internet Protocol) network have become widespread due to the increase in network communication speed and capacity. However, in a VoIP call, when traffic increases or congestion occurs on the network, voice packets are delayed or lost, which may cause quality degradation or break the call.

  With respect to such a problem, Patent Document 1 and Patent Document 2 describe a technique for continuing a call by switching to another network or line without disconnecting the call made by VoIP.

  Japanese Patent Application Laid-Open No. 2004-228561 describes a technique for switching a line from an IP network to a PSTN (Public Switched Telephone Network) network when communication quality is monitored and quality degradation is detected.

  Japanese Patent Application Laid-Open No. 2004-228561 describes a technique for switching a line and continuing a call when a connection state deteriorates below a predetermined standard during the call.

JP 2010-206448 A JP 2006-005772 A

  As described above, Patent Document 1 and Patent Document 2 disclose switching between lines when communication quality deterioration is detected.

  However, in Patent Document 1 and Patent Document 2, since the line is switched after detecting the deterioration of the communication quality, there is a possibility that the line switching due to the detection of the quality deterioration may not be in time when the traffic rapidly increases. is there. An example of a sudden increase in traffic is when an emergency earthquake warning, heavy rain warning, flood warning, tsunami warning, or the like is issued.

  The objective of this invention is providing the communication apparatus, the communication method, and communication program which can solve the subject mentioned above.

  The communication device according to the present invention is a communication device that communicates by connecting to any of a plurality of networks, and detects a piece of information related to the specific event when a specific event occurs And whether or not to switch the connection destination network to another network according to the information related to the detected specific event, and if it is determined to switch, the connection destination network is changed to another network And a switching unit for switching to.

  The communication method according to the present invention detects information related to the specific event when a specific event occurs, and changes the network of the connection destination to another network according to the detected information related to the specific event. It is determined whether to switch to a network, and when it is determined that the connection destination network is to be switched to another network, the connection destination network is switched to another network.

  When a specific event occurs, the program according to the present invention detects the information related to the specific event and changes the connection destination network according to the detected information related to the specific event. A computer for executing a process for determining whether to switch to another network and a process for switching the connected network to another network when it is determined to switch the connected network to another network. It is characterized by.

  According to the present invention, it is possible to continue communication without degrading quality even if traffic on the network rapidly increases.

It is a figure which shows the structure of Embodiment 1 by this invention. It is a figure which shows operation | movement of Embodiment 1 by this invention. It is a figure which shows the structure of Embodiment 2 by this invention. It is a figure which shows the structure of Embodiment 2 by this invention. It is a figure which shows the structure of Embodiment 2 by this invention. It is a figure which shows the structure of Embodiment 2 by this invention. It is a figure which shows operation | movement of Embodiment 2 by this invention. It is a figure which shows operation | movement of Embodiment 3 by this invention.

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

[Embodiment 1]
First, Embodiment 1 of the present invention will be described with reference to FIG. 1 and FIG.

[Constitution]
FIG. 1 is a diagram illustrating a configuration example of a communication system according to the first embodiment. According to FIG. 1, the communication system according to the first embodiment includes a communication device 1000, a network 1100, and a network 1200.

  It is assumed that the communication apparatus 1000 is connected to any one of the network 1100 and the network 1200 for communication. The communication apparatus 1000 may relay communication performed between another communication apparatus and any one of the networks.

  The network 1100 and the network 1200 are general networks, and may be wired networks such as an IP network and a PSTN network, or may be wireless networks. Any type of network may be used as the wireless network. For example, CDMA (Code Division Multiple Access), W-CDMA (Wideband Code Multiple Access), WiMAX (Worldwide Interoperability Access, L, etc.).

  The communication apparatus 1000 includes a detection unit 1001 and a switching unit 1002. The detection unit 1001 detects information related to a specific event when the specific event occurs. The specific event is, for example, an event that may cause a sudden increase in traffic in any network to which the communication apparatus 1000 is connected. Examples of specific events include events for which emergency warnings and warnings are issued, such as emergency earthquake warnings, heavy rain warnings, flood warnings, and tsunami warnings.

  In addition, the switching unit 1002 determines whether to switch the connection destination network to another network according to information related to the detected specific event.

[Operation]
FIG. 2 is a flowchart showing the operation according to the first embodiment. In the following, a case where the communication apparatus 1000 is connected to the network 1100 and the operation of FIG. 2 is performed to switch the connection destination network to the network 1200 will be described as an example.

  First, the detection unit 1001 determines whether a specific event has occurred (S1001). If a specific event has not occurred, the communication apparatus 1000 continues to communicate with the network 1100 (S1001: No). If it is determined in S1001 that a specific event has occurred, the process of S1002 is performed (S1001: Yes). The detection unit 1001 detects information related to the specific event that occurred in S1001 (S1002). The information related to the specific event detected in S1002 is information that makes it possible to determine whether traffic increase in the network 1100 is expected due to the occurrence of the specific event, for example.

  Next, the switching unit 1002 determines whether to switch the connection destination network 1100 to another network 1200 according to the information related to the specific event detected in S1002 (S1003). If the switching unit 1002 determines that switching from the network 1100 is unnecessary, the communication apparatus 1000 continues communication with the network 1100 (S1003: No). If the switching unit 1002 determines in step S1003 that network switching is necessary, the switching unit 1002 switches the network to be connected from the currently connected network 1100 to another network 1200. In the example of FIG. 1, switching from the network 1100 to the network 1200 is performed, but when there are three or more types of networks, switching to another network may be performed.

[effect]
As described above, in the communication apparatus 1000 according to the first embodiment, when a specific event occurs, it is determined whether to switch the connection destination network according to information related to the specific event. Therefore, the communication apparatus 1000 can predict whether the traffic of the currently connected network will increase rapidly due to the occurrence of a specific event.

  Furthermore, when the communication apparatus 1000 determines to switch the connection destination network according to information related to the specific event, the communication apparatus 1000 switches the connection destination network to another network. Therefore, even if the traffic of the network to which the communication device 1000 is connected increases rapidly, it is possible to switch to another network, so that communication can be continued without degrading quality. It becomes.

[Embodiment 2]
Next, Embodiment 2 according to the present invention will be described with reference to the drawings.

[Constitution]
FIG. 3 is a diagram illustrating a configuration example of a communication system according to the second embodiment. According to FIG. 3, the communication system according to the second embodiment includes a VoIP communication device 100 and a VoIP communication device 110. Since the functions of these VoIP communication devices are the same, the VoIP communication device 100 will be described in detail below.

  The communication system according to the second embodiment shown in FIG. 3 assumes that a telephone call is made between the telephone 210 and the telephone 220. The telephones 210 and 220 may be fixed telephones or mobile terminals such as mobile phones.

  The VoIP communication apparatus 100 and the VoIP communication apparatus 110 relay a call between the telephone 210 and the telephone 220 via any one of the IP network 300, the WiMAX network 400, and the PSTN network 500. In addition, an information providing server 310 and a word-of-mouth information server 320 are connected to the IP network 300. Hereinafter, a case where the information providing server 310 and the word-of-mouth information server 320 are connected to the IP network 300 will be described as an example. However, the information providing server 310 and the word-of-mouth information server 320 are connected to the WiMAX network 400 and the PSTN network 500. May be.

  Here, each of the IP network, WiMAX network, and PSTN network may be a general communication network, and as described in the first embodiment, a network according to another standard such as CDMA, W-CDMA, LTE, or the like is appropriately applied. You may do it.

  The information providing server 310 stores information such as information related to earthquakes and information related to weather, and provides the information to the user.

  The word-of-mouth information server 320 stores information transmitted by the user on the network when, for example, an earthquake, heavy rain, flood, or the like occurs. The word-of-mouth information server 320 collects and stores information transmitted by the user on the Internet, such as “I am in Tokyo, but I am shaken” when an earthquake occurs. When a heavy rain warning is issued, the word-of-mouth information server 320 collects and stores information such as the contents written to the weather information site on the Internet and the service by which the user can input the weather at the current location. Furthermore, the word-of-mouth information server 320 can store statistical values such as the total number of information collected as described above, the data capacity, and the amount of information per unit time. For example, the word-of-mouth information server 320 can store statistical values such as the number of information written to a predetermined weather information site and the number of written data per minute within 10 minutes after the heavy rain warning is issued. .

  Hereinafter, in the second embodiment, a case will be described in which the telephone set 210 and the telephone set 220 are switched to the WiMAX network 400 or the PSTN network 500 during a call through the IP network 300.

  FIG. 4 is a diagram illustrating a configuration example of the VoIP communication device 100. According to FIG. 4, the VoIP communication apparatus 100 includes a control unit 101, a storage unit 102, a WiMAX control unit 103, an IP control unit 104, a PSTN control unit 105, and a telephone control unit 106.

  First, the WiMAX control unit 103, the IP control unit 104, and the PSTN control unit 105 each have an interface to a corresponding network, and perform communication control with the corresponding network. Similarly, the telephone control unit 106 has an interface that communicates with the telephone 210 and controls communication with the telephone 210. Furthermore, the WiMAX control unit 103, the IP control unit 104, the PSTN control unit 105, and the telephone control unit 106 can also monitor the quality of the networks to which they are connected. Network quality monitoring is performed by a general method. For example, the IP control unit 104 adds a time stamp to an RTP (Real-time Transport Protocol) header in a packet or a frame, thereby reducing the reception time of the packet. calculate. At the same time, the IP control unit 104 monitors the sequence number of the packet and detects a change in the reception order of the packets and a quality deterioration when a packet loss occurs.

  The storage unit 102 stores a telephone number of the telephone 220 that is a communication partner of the telephone 210, communication quality of each network, information provided from the information providing server 310, and the like. More specifically, the storage unit 102 stores the IP telephone number, WiMAX telephone number, and fixed telephone number (PSTN) of the telephone 220 that is the communication partner of the telephone 210. In addition, the storage unit 102 stores the communication quality of each of the IP network 300, the WiMAX network 400, and the PSTN network 500. Furthermore, the storage unit 102 stores information related to earthquakes provided from the information providing server 310 and information related to weather.

  Next, the configuration of the control unit 101 will be described with reference to FIG. FIG. 5 shows a configuration example of the control unit 101. According to FIG. 5, the control unit 101 includes a detection unit 1011 and a switching unit 1012.

  The detection unit 1011 determines whether or not a specific event has occurred, and detects information related to the specific event. For example, consider a case where an earthquake early warning is issued. When the earthquake early warning is issued, the detection unit 1011 detects the emergency earthquake early warning by receiving notification of the emergency earthquake early warning by SMS (Short Message Service) or e-mail from the information providing server 310. Next, the detection unit 1011 requests the word-of-mouth information server 320 to obtain information related to the earthquake early warning.

  The switching unit 1012 determines whether to switch the connection destination network to another network according to information related to the detected specific event. When the switching unit 1012 determines to switch to another network, the switching unit 1012 switches the connection destination network to another network. Specifically, the switching unit 1012 is connected to the WiMAX network 400 from the connected IP network 300 according to the content and quantity of the user's word-of-mouth information related to the earthquake early warning received by the detection unit 1011 from the word-of-mouth information server 320. Or whether to switch to the PSTN network 500.

  The configuration of the VoIP communication device 110 is as shown in FIG. According to FIG. 6, the VoIP communication apparatus 110 includes a control unit 111, a storage unit 112, a WiMAX control unit 113, an IP control unit 114, a PSTN control unit 115, and a telephone control unit 116. The control unit 111 further includes a detection unit 1111 and a switching unit 1112. As described above, the VoIP communication apparatus 110 has a configuration substantially similar to that of the VoIP communication apparatus 100, and thus detailed description of each part is omitted.

[Operation]
Hereinafter, the operation of the second embodiment will be described in detail with reference to the flowchart of FIG. In the following, a heavy rain warning is issued when the telephone 210 makes a VoIP call with the telephone 220 using the IP network 300, and the VoIP communication device 110 receives notification of the heavy rain warning to determine network switching. An example of the case will be described. In the following, the operation of the VoIP communication apparatus 110 that is the incoming side of a call will be mainly described. However, the VoIP communication apparatus 100 on the receiving side may perform the same operation as that of the VoIP communication apparatus 110 described below.

  First, the telephone 210 starts a call with the telephone 220 that is a communication partner (S101). Hereinafter, the telephone 210 makes a VoIP call via the IP network 300. In this case, the telephone 210 makes a call to the IP telephone number of the telephone 220 stored in the storage unit 102 provided in the VoIP communication apparatus 100 and establishes a call state via the IP network 300.

  When an IP call through the IP network 300 is established, the VoIP communication device 100 and the VoIP communication device 200 exchange their mutual IP phone numbers, WiMAX phone numbers, and fixed phone numbers (S102). First, the VoIP communication device 100 on the calling side adds the IP phone number 100A, the WiMAX phone number 100B, and the fixed phone number 100C of the VoIP communication device 100 to the frame and transmits them to the VoIP communication device 110 on the receiving side. Then, when receiving the frame, the receiving-side VoIP communication apparatus 110 registers the other party's IP telephone number 100A, WiMAX telephone number 100B, and fixed telephone number 100C in the storage unit 112 of the VoIP communication apparatus 110. Similarly, the VoIP communication device 110 transmits the IP phone number 110A, the WiMAX phone number 110B, and the fixed phone number 110C of the VoIP communication device 110 to the VoIP communication device 100. The VoIP communication apparatus 100 stores the received telephone number of the VoIP communication apparatus 110 in the storage unit 112.

  Here, it is assumed that a heavy rain warning is issued in an area where the incoming VoIP communication device 100 is used. When a heavy rain warning is issued, a notification indicating that the heavy rain warning has been issued is transmitted from the information providing server 310 to the VoIP communication device 110 on the receiving side. As described above, examples of the notification indicating the issuing of the heavy rain warning include SMS and electronic mail. The detection unit 1111 of the VoIP communication device 110 receives a notification indicating that a heavy rain warning has been issued (S103).

  The VoIP communication apparatus 110 that has received the notification of the heavy rain warning issue determines whether to continue the IP call using the IP network 300 or terminate the call (S104). When the VoIP communication apparatus 110 determines that the call is not continued, the call is terminated (S104: No).

  When the VoIP communication apparatus 110 determines that the call through the IP network 300 is continued (S104: Yes), the VoIP communication apparatus 110 determines whether or not to obtain word-of-mouth information of people in the area where the heavy rain warning is issued ( S105). When the VoIP communication device 110 determines not to obtain word-of-mouth information (S105: No), the call is terminated.

  When it is determined that the VoIP communication apparatus 110 obtains word-of-mouth information (S105: Yes), the detection unit 1111 of the VoIP communication apparatus 110 requests the word-of-mouth information from the word-of-mouth information server 320 (S106).

  The word-of-mouth information server 320 that received the request for word-of-mouth information transmits the word-of-mouth information to the VoIP communication apparatus 110, and the VoIP communication apparatus 110 receives the transmitted word-of-mouth information (S107). As described above, the word-of-mouth information includes, for example, the number of information transmitted by the user on the network after the heavy rain warning is issued, the number of writings to a predetermined weather information site, and the like.

  Based on the received word-of-mouth information, the switching unit 1112 of the VoIP communication apparatus 110 determines whether to continue the VoIP call or end the call (S108). If the switching unit 1112 determines that the call is to be terminated, the call is terminated (S108: No).

  When the VoIP communication apparatus 110 determines that the call is to be continued (S108: Yes), the switching unit 1112 determines whether it is necessary to switch the line (network) from the IP network 300 (S109). If the switching unit 1112 determines that the call is to be ended, the call is ended (S109: No).

  When the VoIP communication apparatus 110 determines to switch the line (S109: Yes), the switching unit 1112 switches the network to be connected from the IP network 300 to either the WiMAX network 400 or the PSTN network 500 (S110).

  As described above, the switching unit 1112 determines whether or not to continue the call and whether or not to switch the network based on the word-of-mouth information received from the word-of-mouth information server 320. Here, the necessity of continuation of the call determined in S108 and the criteria for determining the necessity of network switching determined in S109 will be described below. For example, it is assumed that the switching unit 1112 receives, as word-of-mouth information, the number of cases written on a predetermined weather information site for 10 minutes after the heavy rain warning is issued from the word-of-mouth information server 320. In this case, the switching unit 1112 compares the received number of writings with a predetermined threshold, and makes a determination such as switching the line when the received number of writings is equal to or greater than the threshold. Further, the switching unit 1112 may compare the traffic volume of the IP network 300 monitored separately with a predetermined threshold in addition to the comparison between the received number of writings and the threshold. In this case, for example, the switching unit 1112 determines that the network needs to be switched when the received number of writings is equal to or greater than the threshold and the traffic amount of the IP network 300 is equal to or greater than the predetermined threshold.

  Furthermore, if the switching unit 1112 uses word-of-mouth information for a short time after the heavy rain warning is issued, for example, about 1 minute, whether or not the network needs to be switched before the traffic of the IP network 300 increases rapidly. Can be determined.

  In addition, in S108 or S109, the switching unit 1112 determines from the statistical value of the word-of-mouth information that the heavy rain warning or the emergency earthquake warning is a false alarm, and it is not necessary to continue the call or switch the line. It can also be judged. For example, when the number of writes to a predetermined weather information site after the announcement of a heavy rain warning is less than or equal to a threshold value, it can be determined that the heavy rain warning is a false alarm. In addition, if the number of “Sunny” keyword is written to the weather information site after the heavy rain warning is issued, or if the number of “Sunny” keywords exceeds the number of “Rain” keywords, It can be judged that the heavy rain warning is a false alarm.

[effect]
As described above, in the VoIP communication apparatus according to the second embodiment, when a specific event such as a heavy rain alarm occurs, it is determined whether to switch the connection destination network according to information related to the heavy rain alarm such as word-of-mouth information. doing. Therefore, the VoIP communication apparatus according to the second embodiment can predict whether or not the traffic of the currently connected network will rapidly increase due to the occurrence of a specific event.

  Furthermore, when the VoIP communication apparatus determines to switch the connection destination network according to information related to the specific event, the VoIP communication apparatus switches the connection destination network to another network. Therefore, even if the traffic of the network to which the VoIP communication device is connected increases rapidly, it is possible to switch to another network, so communication can be continued without degrading quality. It becomes.

  In addition, the VoIP communication apparatus according to the second embodiment detects a sign of a sudden increase in traffic on the network by detecting word-of-mouth information related to a specific event such as a heavy rain warning, or detects a sudden increase in traffic. It becomes possible to do. Therefore, the VoIP communication apparatus can switch the line before communication becomes difficult, and can continue communication without degrading quality.

  In addition, since the VoIP communication apparatus according to the second embodiment determines whether or not to switch the line at the beginning of the sudden increase in traffic based on the word-of-mouth information, if the heavy rain warning or the earthquake early warning is false, It is possible to leave without switching.

[Embodiment 3]
Next, Embodiment 3 according to the present invention will be described with reference to the flowchart of FIG. In the third embodiment, an operation for determining which line to select when the VoIP communication apparatus performs line switching in the second embodiment will be described. Since the operation up to the process (FIG. 7: S110) in which the VoIP communication apparatus determines whether or not to switch the line is the same as the operation of the second embodiment, the subsequent operation will be described using the example of the second embodiment. Note that the configuration of the third embodiment is the same as the configuration of the second embodiment, and a detailed description thereof will be omitted.

  The switching unit 1112 of the VoIP communication apparatus 110 determines that it is necessary to switch from a connected line or IP network 300 to another network (S110). Here, the switching unit 1112 determines whether to select a communication quality priority line or a call priority priority line (S111).

  In the example of the third embodiment, it is assumed that the communication charge via the WiMAX network 400 is low and the communication quality via the PSTN network 500 is high, but the present invention is not limited to this. You may judge suitably according to the standard which explains. For example, the call charge and communication quality may be periodically measured and stored in the storage unit 112 of the VoIP communication apparatus 110. The switching unit 1112 determines a network to switch to based on the call charge and communication quality information stored in the storage unit 112. For example, the switching unit 1112 selects a line that prioritizes communication quality when the call charge per unit time, such as the call charge per minute, is greater than or equal to the threshold, and the call charge per unit time is less than the threshold In this case, a line giving priority to the call charge may be selected. Similarly, the switching unit 1112 may determine whether to select a line that prioritizes communication quality or a line that prioritizes call charge by comparing the communication quality with a threshold value. Further, the switching unit 1112 may present and select a line that can be switched to the user of the telephone 220. For example, when communication is performed via the IP network 300, the user may be allowed to select the WiMAX network 400 and the PSTN network 500 and indicate the respective call charges and communication quality.

  In S111, when the switching unit 1112 selects a line that prioritizes call charges, the VoIP communication apparatus 110 notifies the VoIP communication apparatus 100 that is a call partner of switching to a WiMAX line (S112). The VoIP communication apparatus 110 transmits a switching request instructing to make a call via the WiMAX network 400 to the VoIP communication apparatus 100 via the IP network 300.

  When the VoIP communication apparatus 100 receives the switching request, the control unit 101 instructs the WiMAX control unit 103 to make a call via the WiMAX network 400. In addition, the WiMAX control unit 103 reads the WiMAX telephone number 110B of the VoIP communication device 110 stored in the storage unit 102, and transmits it to the VoIP communication device 110 via the WiMAX network 400.

  The VoIP communication apparatus 110 on the receiving side collates the WiMAX telephone number 100B notified from the VoIP communication apparatus 100 with the WiMAX telephone number of the VoIP communication apparatus 100 stored in the storage unit 112 in advance. As a result of the collation, when the notified WiMAX telephone number matches the WiMAX telephone number stored in the storage unit 112, a call via the WiMAX network is started between the VoIP communication apparatus 100 and the VoIP communication apparatus 110 (S113). ).

  In S111, when the switching unit 1112 selects a line that prioritizes communication quality, the VoIP communication apparatus 110 notifies the call partner VoIP communication apparatus 100 of switching to the PSTN line (S114). The VoIP communication apparatus 110 transmits a switching request instructing to make a call via the PSTN network 500 to the VoIP communication apparatus 100 via the IP network 300.

  Thereafter, in the same manner as in S113, the VoIP communication apparatus 100 that has received a request for switching to the PSTN network 500 starts a call with the VoIP communication apparatus 110 via the PSTN network 500 (S115).

[effect]
According to the third embodiment, an effect equivalent to that of the second embodiment is obtained.

  In addition, in the third embodiment, when the VoIP communication apparatus determines to switch the line, the line to be switched is selected based on the communication quality and the call charge. Therefore, according to the third embodiment, it is possible not only to simply switch the connection destination network but also to automatically select and switch the line according to a predetermined criterion.

[Embodiment 4]
In the first to third embodiments, it is assumed that word-of-mouth information is obtained when a heavy rain warning or an emergency earthquake warning is issued in an area where a VoIP communication device is used. The VoIP communication apparatus according to the fourth embodiment also obtains user's word-of-mouth information even in the case of a line failure, line construction, or maintenance, where there is a concern about line quality degradation. Thereby, according to the VoIP communication apparatus of the fourth embodiment, it becomes possible to switch the line before the formal failure information is announced by the line operator.

  While the present invention has been described with reference to the embodiments, the present invention is not limited to the above embodiments. Various changes that can be understood by those skilled in the art can be made to the configuration and details of the present invention within the scope of the present invention.

  Further, a part or all of the above-described embodiment can be described as in the following supplementary notes, but is not limited thereto.

(Appendix 1)
A communication device that communicates by connecting to any of a plurality of networks,
A detection unit that detects information related to the specific event when a specific event occurs;
In accordance with the detected information related to the specific event, it is determined whether to switch the connection destination network to another network, and if it is determined to switch, switching to switch the connection destination network to another network And
A communication apparatus comprising:

(Appendix 2)
The communication apparatus according to appendix 1, wherein the information related to the specific event is information transmitted by a user.

(Appendix 3)
The switching unit is
The communication apparatus according to appendix 1 or 2, wherein when the amount of information related to the specific event exceeds a threshold, the connection destination network is switched to another network.

(Appendix 4)
The switching unit is
When the amount of information related to the specific event exceeds a threshold value and the traffic amount of the connection destination network exceeds a threshold value, the connection destination network is switched to another network. The communication device according to any one of appendices 1 to 3.

(Appendix 5)
The detector is
The communication apparatus according to any one of appendices 1 to 4, wherein the information related to the specific event is received from a server that stores information related to the specific event.

(Appendix 6)
The switching unit is
The communication apparatus according to any one of appendices 1 to 5, wherein a switching destination network is selected and switched based on a communication quality or a communication fee for communication performed with the connection destination network. .

(Appendix 7)
The communication device further includes:
The communication apparatus according to any one of supplementary notes 1 to 6, further comprising: a receiving unit that detects that the specific event has occurred by receiving a specific message.

(Appendix 8)
The communication device according to appendix 7, wherein the specific message is SMS (Short Message Service) or electronic mail.

(Appendix 9)
When a certain event occurs, information related to the certain event is detected,
In accordance with information related to the detected specific event, determine whether to switch the connected network to another network,
When it is determined that the network of the connection destination is switched to another network, the network of the connection destination is switched to another network.

(Appendix 10)
The method according to claim 9, wherein the information related to the specific event is information transmitted by a user.

(Appendix 11)
The communication method according to appendix 9 or 10, wherein when the amount of information related to the specific event exceeds a threshold value, the connection destination network is switched to another network.

(Appendix 12)
When the amount of information related to the specific event exceeds a threshold value and the traffic amount of the connection destination network exceeds a threshold value, the connection destination network is switched to another network. The communication method according to any one of appendices 9 to 11.

(Appendix 13)
The communication method according to any one of appendices 9 to 12, wherein the information related to the specific event is received from a server that stores the information related to the specific event.

(Appendix 14)
The communication method according to any one of appendices 9 to 13, wherein a switching destination network is selected and switched based on a communication quality or a communication fee for communication performed with the connection destination network. .

(Appendix 15)
The communication method according to any one of appendices 9 to 14, wherein the occurrence of the specific event is detected by receiving a specific message.

(Appendix 16)
The communication method according to appendix 15, wherein the specific message is SMS (Short Message Service) or electronic mail.

(Appendix 17)
A process of detecting information related to the specific event when a specific event occurs;
A process of determining whether to switch the connection destination network to another network according to the information related to the detected specific event;
When it is determined to switch the connection destination network to another network, a process of switching the connection destination network to another network;
A program that causes a computer to execute.

(Appendix 18)
The program according to appendix 17, wherein the information related to the specific event is information transmitted by a user.

(Appendix 19)
The program according to appendix 17 or 18, wherein when the amount of information related to the specific event exceeds a threshold, the connection destination network is switched to another network.

(Appendix 20)
When the amount of information related to the specific event exceeds a threshold value and the traffic amount of the connection destination network exceeds a threshold value, the connection destination network is switched to another network. The program according to any one of appendices 17 to 19.

(Appendix 21)
The program according to any one of appendices 17 to 20, further comprising: a process of receiving information related to the specific event from a server that stores information related to the specific event.

(Appendix 22)
The program according to any one of appendices 17 to 21, wherein a switching destination network is selected and switched based on a communication quality or a communication fee for communication performed with the connection destination network.

(Appendix 23)
The program according to any one of appendices 17 to 22, further comprising a process of detecting that the specific event has occurred by receiving a specific message.

(Appendix 24)
The program according to appendix 23, wherein the specific message is SMS (Short Message Service) or electronic mail.

100, 110 VoIP communication device 101, 111 Control unit 102, 112 Storage unit 103, 113 WiMAX control unit 104, 114 IP control unit 105, 115 PSTN control unit 106, 116 Telephone control unit 210, 220 Telephone 300 IP network 310 Provision of information Server 320 Word-of-mouth information server 400 WiMAX network 500 PSTN network 1000 Communication device 1001, 1011, 1111 Detection unit 1002, 1012, 1112 Switching unit 1100, 1200 Network

Claims (10)

A communication device that communicates by connecting to any of a plurality of networks,
A detection unit that detects information related to the specific event when a specific event occurs;
In accordance with the detected information related to the specific event, it is determined whether to switch the connection destination network to another network, and if it is determined to switch, switching to switch the connection destination network to another network And
A communication apparatus comprising: The communication apparatus according to claim 1, wherein the information related to the specific event is information transmitted by a user. The switching unit is
The communication apparatus according to claim 1, wherein when the amount of information related to the specific event exceeds a threshold value, the connection destination network is switched to another network. The switching unit is
When the amount of information related to the specific event exceeds a threshold value and the traffic amount of the connection destination network exceeds a threshold value, the connection destination network is switched to another network. The communication apparatus according to any one of claims 1 to 3. The detector is
The communication apparatus according to any one of claims 1 to 4, wherein the information related to the specific event is received from a server that stores information related to the specific event. The switching unit is
The communication according to any one of claims 1 to 5, wherein a switching destination network is selected and switched based on a communication quality or a communication fee for communication performed with the connection destination network. apparatus. The communication device further includes:
The communication apparatus according to claim 1, further comprising: a receiving unit configured to detect that the specific event has occurred by receiving a specific message. The communication device according to claim 7, wherein the specific message is SMS (Short Message Service) or electronic mail. When a certain event occurs, information related to the certain event is detected,
In accordance with information related to the detected specific event, determine whether to switch the connected network to another network,
When it is determined that the network of the connection destination is switched to another network, the network of the connection destination is switched to another network. A process of detecting information related to the specific event when a specific event occurs;
A process of determining whether to switch the connection destination network to another network according to the information related to the detected specific event;
When it is determined to switch the connection destination network to another network, a process of switching the connection destination network to another network;
A program that causes a computer to execute.

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