JP6657675B2 - Communication system, relay device, communication control method, and communication control program - Google Patents

Description

  The present invention relates to a communication system, a relay device, a communication control method, and a communication control program, and particularly to a communication system, a relay device, a communication control method, and a communication control program in which information is relayed.

  For example, Japanese Patent Laying-Open No. 11-27734 (Patent Document 1) discloses the following manlocation system. In other words, the man-location system includes a mobile terminal device that is carried by a target person and moves, and a tracking terminal device that performs data communication with the mobile terminal device and manages the location of the target person. The mobile terminal device includes a PHS device that can switch between a home mode connected to a parent device installed indoors and a public mode connected to a public CS installed in an outdoor public area. A PHS control device that compares the received electric field strengths in the mode and the public mode to determine whether or not the subject person is going out or at home, and transmits a determination result to the tracking terminal device using the PHS device at least in the case of going out determination. .

  Also, for example, Japanese Patent No. 3847760 (Patent Document 2) discloses the following single person safety confirmation system. That is, the single person safety confirmation system is installed in the single person residence and transmits the living activity information detected by the sensor that detects the living activity in the single person residence. A mobile communication terminal for transmitting communication mode information indicating a communication mode being used, wherein the communication mode is a first mode inside the single person residence and the communication mode is a second mode outside the single residence residence; Receiving the living activity information from the in-house communication terminal, receiving the communication mode information from the mobile communication terminal, and determining whether the single person is at home or out based on the received communication mode information When it is determined that the single person is at home, the safety of the single person is determined based on the living activity information, and when it is determined that the single person is out, based on the living activity information, And a processing unit that performs detection determination of subscribers.

  Also, for example, Japanese Patent Application Laid-Open No. 2001-67506 (Patent Document 3) discloses the following at-home / out-of-home determination system. That is, the at-home / out-of-home determination system includes a communication path provided in the building, a first sensor connected to the communication path and detecting a human body near an entrance and exit, and a first sensor connected to the communication path and other than the entrance and exit. A second sensor for detecting a human body in the building; and a controller connected to the communication path and monitoring the presence of a person based on detection signals from the first and second sensors. The controller is set to ignore the detection signal from the second sensor for a predetermined time after receiving the detection signal from the first sensor, and the controller is configured to ignore the detection signal from the second sensor for a predetermined time after the predetermined time. When receiving a detection signal from the second sensor, it is determined that a person is present in the building.

JP-A-11-27734 Japanese Patent No. 3847760 JP 2001-67506 A

  Beyond the techniques described in Patent Literatures 1 to 3, there is a need for a technique for more correctly determining whether a user who uses a terminal device is at home or out, for example.

  The present invention has been made to solve the above-described problems, and has as its object to provide a communication system, a relay device, and a communication control method capable of more correctly determining whether a terminal device is present in a predetermined area. And a communication control program.

  (1) In order to solve the above problem, a communication system according to an aspect of the present invention includes a relay device used in a predetermined area, a terminal device, and a determination unit, wherein the terminal device includes the relay device Transmitting a name resolution request, receiving a name resolution response to the name resolution request, transmitting notification information addressed to the address of the relay device indicated by the received name resolution response, the determination unit includes: A determination process is performed to determine whether or not the terminal device is in the predetermined area based on a result of receiving information.

  (5) In order to solve the above problem, a communication system according to another aspect of the present invention includes a relay device that relays communication between an internal network in a predetermined area and an external network outside the predetermined area, and a terminal device. The terminal device transmits a name resolution request of the relay device, receives a name resolution response to the name resolution request, the determination unit, the terminal device of the relay device indicated by the name resolution response A determination process is performed to determine whether the terminal device is present in the predetermined area based on the address.

  (10) In order to solve the above problem, a relay device according to an aspect of the present invention is a relay device used in a predetermined area, and receives notification information addressed to an address of the relay device from a terminal device. A determination unit that determines whether the terminal device is present in the predetermined area based on a result of receiving the notification information by the reception unit.

  (11) In order to solve the above problem, a communication control method according to an aspect of the present invention is a communication control method in a communication system including a relay device used in a predetermined area, a terminal device, and a determination unit. Transmitting the name resolution request of the relay device, the terminal device receiving a name resolution response to the name resolution request, and the terminal device receiving the name resolution response. Transmitting the notification information addressed to the address of the relay device indicated by, and the determination unit determines whether the terminal device is present in the predetermined area based on a reception result of the notification information Performing a determination process.

  (12) In order to solve the above problem, a communication control method according to another aspect of the present invention includes a relay device that relays communication between an internal network in a predetermined area and an external network outside the predetermined area, and a terminal device. A communication control method in a communication system comprising: a terminal device transmitting a name resolution request for the relay device; and the terminal device receiving a name resolution response to the name resolution request. And determining the terminal device is present in the predetermined area based on the address of the relay device indicated by the name resolution response.

  (13) In order to solve the above problem, a communication control program according to an aspect of the present invention is a communication control program used in a relay device used in a predetermined area. Receiving notification information addressed to the address of the terminal device, and performing a determination process of determining whether the terminal device is present in the predetermined area based on a reception result of the notification information. Program.

  The present invention can be realized not only as a communication system having such a characteristic processing unit, but also as a terminal device having such a characteristic processing unit, or a semiconductor integrated circuit which realizes part or all of a communication system. Or can be realized as

  ADVANTAGE OF THE INVENTION According to this invention, it can be determined more correctly whether a terminal device exists in a predetermined area.

FIG. 1 is a diagram illustrating a configuration of a communication system according to the first embodiment of the present invention. FIG. 2 is a diagram showing an example of an arrangement in a house of the communication system according to the first embodiment of the present invention. FIG. 3 is a sequence diagram illustrating an example of an operation when the wireless terminal device transmits and receives information to and from the relay device via the internal network in the communication system according to the first embodiment of the present invention. FIG. 4 is a sequence diagram illustrating an example of an operation when the wireless terminal device transmits and receives information to and from the relay device via the external network in the communication system according to the first embodiment of the present invention. FIG. 5 is a diagram illustrating a configuration of the wireless terminal device in the communication system according to the first embodiment of the present invention. FIG. 6 is a diagram illustrating a configuration of the relay device in the communication system according to the first embodiment of the present invention. FIG. 7 is a diagram illustrating a configuration of a communication system according to the second embodiment of the present invention. FIG. 8 is a sequence diagram illustrating an example of an operation when the wireless terminal device transmits and receives information to and from the relay device via the internal network in the communication system according to the second embodiment of the present invention. FIG. 9 is a sequence diagram illustrating an example of an operation when the wireless terminal device transmits and receives information to and from the relay device via the external network in the communication system according to the second embodiment of the present invention. FIG. 10 is a diagram illustrating a configuration of a wireless terminal device in the communication system according to the second embodiment of the present invention. FIG. 11 is a diagram illustrating a configuration of a relay device in the communication system according to the second embodiment of the present invention.

  First, the contents of the embodiment of the present invention will be listed and described.

  (1) A communication system according to an embodiment of the present invention includes a relay device used in a predetermined area, a terminal device, and a determination unit, and the terminal device transmits a name resolution request of the relay device. Receiving a name resolution response to the name resolution request, transmitting notification information addressed to the address of the relay device indicated by the received name resolution response, the determining unit based on the reception result of the notification information And a determination process for determining whether the terminal device is present in the predetermined area.

  With such a configuration, for example, when the reception result of the notification information when the terminal device is in the predetermined area is different from the reception result of the notification information when the terminal device is not in the predetermined area, the reception of the notification information is performed. From the result, it can be more correctly determined whether or not the terminal device exists in the predetermined area. In addition, the configuration using the reception result of the notification information from the terminal device makes more accurate determination than a method using a signal from a GPS (Global Positioning System) satellite in which a position calculation error increases in a predetermined area such as a house, for example. Processing can be performed. Further, when the terminal device performs the wired communication, the communication connection destination can be more reliably determined, so that a more correct determination process can be performed.

  (2) Preferably, the determination unit determines a transmission path of the notification information, and performs the determination process based on a determination result.

  With such a configuration, for example, a transmission path in the predetermined area through which the notification information is transmitted when the terminal device is in the predetermined area, and a transmission path outside the predetermined area through which the notification information is transmitted when the terminal device is not in the predetermined area Can be determined, so that more accurate determination processing can be performed.

  (3) Preferably, the relay device relays communication between an internal network in the predetermined area and an external network outside the predetermined area, and the determination unit performs the communication based on a source address of the notification information. Perform judgment processing.

  With such a configuration, for example, the transmission source of the notification information determines which network of the internal network used by the terminal device existing in the predetermined area and the external network used by the terminal device existing outside the predetermined area. Since it is possible to recognize from the address, it is possible to perform more correct determination processing based on the address of the source of the notification information.

  (4) Preferably, the relay device includes the determination unit, and notifies a result of the determination process to the terminal device.

  With such a configuration, the terminal device can perform, for example, a process according to the result of the determination process.

  (5) A communication system according to an embodiment of the present invention includes: a relay device that relays communication between an internal network in a predetermined area and an external network outside the predetermined area; a terminal device; The terminal device transmits a name resolution request of the relay device, receives a name resolution response to the name resolution request, the determination unit, based on an address of the relay device indicated by the name resolution response, the terminal device Is performed to determine whether or not exists in the predetermined area.

  With such a configuration, for example, communication between the terminal device and the relay device is performed using either the internal network used by the terminal device existing in the predetermined area or the external network used by the terminal device existing outside the predetermined area. Since it can be recognized from the address of the relay device indicated by the name resolution response, it can be more correctly determined from the address whether or not the terminal device exists in the predetermined area. Further, the configuration using the address of the relay device indicated by the name resolution response enables more accurate determination processing to be performed as compared with a method using a signal from a GPS satellite in which a position calculation error increases in a predetermined area such as a house. it can. Further, when the terminal device performs the wired communication, the communication connection destination can be more reliably determined, so that a more correct determination process can be performed.

  (6) Preferably, the terminal device includes an acquisition unit that acquires mode information indicating whether an operation mode for communication connection with the relay device is selected, and the determination unit is acquired by the acquisition unit. The determination process is further performed based on the mode information.

  With such a configuration, when the terminal device is in the predetermined area, it is possible to recognize whether or not the terminal device is in an operation mode for establishing a communication connection with the relay device, so that the operation mode is selected. If not, for example, it can be evaluated that the accuracy of the determination result is low.

  (7) Preferably, when the relay device receives the name resolution request from the terminal device, the relay device transmits the name resolution response indicating its own address in the internal network to the terminal device, and the terminal device includes: If the name resolution request is transmitted to a device other than the relay device, the name resolution response indicating the address of the relay device in the external network is received.

  With this configuration, the terminal device can acquire the address of the relay device on the network side to which the terminal device is connected, regardless of whether the terminal device is connected to the internal network or the external network.

  (8) Preferably, the terminal device includes the determination unit, and notifies a result of the determination process to the relay device.

  With such a configuration, in the relay device, for example, a process according to the result of the determination process can be performed.

  (9) Preferably, when the determination unit determines that the terminal device is present in the predetermined area, the terminal device starts a predetermined process to be performed in the predetermined area.

  With this configuration, the terminal device can automatically start a dedicated application to be executed in a predetermined area.

  (10) A relay device according to an embodiment of the present invention is a relay device used in a predetermined area, wherein the receiving unit receives notification information addressed to an address of the relay device from a terminal device; A determination unit that performs a determination process of determining whether the terminal device is present in the predetermined area based on a reception result of the notification information by the unit.

  With such a configuration, for example, when the reception result of the notification information when the terminal device is in the predetermined area is different from the reception result of the notification information when the terminal device is not in the predetermined area, the reception of the notification information is performed. From the result, it can be more correctly determined whether or not the terminal device exists in the predetermined area. In addition, the configuration using the reception result of the notification information from the terminal device enables more accurate determination processing to be performed as compared to a method using a signal from a GPS satellite in which a position calculation error increases in a predetermined area such as a house. it can. Further, when the terminal device performs the wired communication, the communication connection destination can be more reliably determined, so that a more correct determination process can be performed.

  (11) A communication control method according to an embodiment of the present invention is a communication control method in a communication system including a relay device used in a predetermined area, a terminal device, and a determination unit, wherein the terminal device includes: Transmitting the name resolution request of the relay device; the terminal device receiving a name resolution response to the name resolution request; and the terminal device addressing the relay device indicated by the received name resolution response. Transmitting the notification information to the destination, and performing the determination process of determining whether the terminal device is present in the predetermined area based on the reception result of the notification information. Including.

  With such a configuration, for example, when the reception result of the notification information when the terminal device is in the predetermined area is different from the reception result of the notification information when the terminal device is not in the predetermined area, the reception of the notification information is performed. From the result, it can be more correctly determined whether or not the terminal device exists in the predetermined area. In addition, the configuration using the reception result of the notification information from the terminal device enables more accurate determination processing to be performed as compared to a method using a signal from a GPS satellite in which a position calculation error increases in a predetermined area such as a house. it can. Further, when the terminal device performs the wired communication, the communication connection destination can be more reliably determined, so that a more correct determination process can be performed.

  (12) A communication control method according to an embodiment of the present invention provides a communication device comprising: a relay device that relays communication between an internal network in a predetermined area and an external network outside the predetermined area; a terminal device; and a determination unit. A communication control method in a system, wherein the terminal device transmits a name resolution request of the relay device, the terminal device receives a name resolution response to the name resolution request, Performing a determination process of determining whether or not the terminal device is present in the predetermined area based on the address of the relay device indicated by the name resolution response.

  With such a configuration, for example, communication between the terminal device and the relay device is performed using either the internal network used by the terminal device existing in the predetermined area or the external network used by the terminal device existing outside the predetermined area. Since it can be recognized from the address of the relay device indicated by the name resolution response, it can be more correctly determined from the address whether or not the terminal device exists in the predetermined area. Further, the configuration using the address of the relay device indicated by the name resolution response enables more accurate determination processing to be performed as compared with a method using a signal from a GPS satellite in which a position calculation error increases in a predetermined area such as a house. it can. Further, when the terminal device performs the wired communication, the communication connection destination can be more reliably determined, so that a more correct determination process can be performed.

  (13) A communication control program according to an embodiment of the present invention is a communication control program used in a relay device used in a predetermined area, and notifies a computer from a terminal device to an address of the relay device as an address. A program for executing a step of receiving information and a step of performing a determination process of determining whether or not the terminal device is present in the predetermined area based on a result of receiving the notification information.

  With such a configuration, for example, when the reception result of the notification information when the terminal device is in the predetermined area is different from the reception result of the notification information when the terminal device is not in the predetermined area, the reception of the notification information is performed. From the result, it can be more correctly determined whether or not the terminal device exists in the predetermined area. In addition, the configuration using the reception result of the notification information from the terminal device enables more accurate determination processing to be performed as compared to a method using a signal from a GPS satellite in which a position calculation error increases in a predetermined area such as a house. it can. Further, when the terminal device performs the wired communication, the communication connection destination can be more reliably determined, so that a more correct determination process can be performed.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same or corresponding portions have the same reference characters allotted, and description thereof will not be repeated. Further, at least some of the embodiments described below may be arbitrarily combined.

<First embodiment>
[Configuration and basic operation]
FIG. 1 is a diagram illustrating a configuration of a communication system according to the first embodiment of the present invention.

  Referring to FIG. 1, communication system 301 includes relay device 101, home device 111, monitoring device 112, monitoring device 113, access points 150 and 151, DNS server 161, base station 171, Terminal devices 202A, 202B, and 202C are provided.

  Hereinafter, each of the wireless terminal devices 202A, 202B, and 202C is also referred to as a wireless terminal device 202. In FIG. 1, one access point 150 is representatively shown, but a plurality of access points 150 may be provided. Although one access point 151 is shown as a representative, a plurality of access points 151 may be provided. Although one DNS server 161 is shown as a representative, a plurality of DNS servers 161 may be provided. Although one base station 171 is shown as a representative, a plurality of base stations 171 may be provided. Further, although three wireless terminal devices 202 are representatively illustrated, more or less wireless terminal devices 202 may be provided. Further, the relay device 101 may be integrated with at least one of the access points 150 and 151 in the communication system 301.

  The access point 150 is, for example, an access point for providing a home wireless LAN service. The access point 151 is, for example, an access point for providing a public wireless LAN service. The base station 171 is a base station managed and operated by a communication carrier, for example.

  The wireless terminal device 202 is, for example, a mobile phone or a smart phone, and performs wireless communication with the access point 150 or 151 in accordance with a communication standard such as Wi-Fi (registered trademark) and Bluetooth (registered trademark) to thereby provide the access point 150 or 151. 151 to transmit and receive information. The wireless terminal device 202 transmits and receives information to and from the base station 171 by performing wireless communication with the base station 171 according to communication standards such as 3G and LTE (Long Term Evolution).

  Each of the wireless terminal devices 202A, 202B, and 202C has a unique terminal ID. The terminal IDs of the wireless terminal devices 202A, 202B, 202C are registered in the relay device 101 together with the user information of the wireless terminal device 202 having the terminal ID, for example.

  The DNS server 161 is a server capable of providing, for example, a DNS (Domain Name System) service and a DDNS (Dynamic DNS) service.

  The relay device 101, the in-home device 111, the monitoring device 112, the watching device 113, and the access point 150 transmit and receive information to and from other devices via the internal network 10, for example.

  The relay device 101, the access point 151, the DNS server 161, and the base station 171 transmit and receive information to and from other devices via the external network 11, for example.

  FIG. 2 is a diagram showing an example of an arrangement in a house of the communication system according to the first embodiment of the present invention.

  Referring to FIG. 2, access point 150 in communication system 301 is provided, for example, in house H1, and forms a predetermined area A1 which is a communication area. The predetermined area A1 is, for example, inside the house H1. Further, the communication area of base station 171 includes, for example, predetermined area A1.

  The users of the wireless terminal devices 202A, 202B, and 202C, for example, spend the corresponding wireless terminal device 202 in the house H1 or carry the corresponding wireless terminal device 202 and go out of the house H1.

  The relay device 101 is used for a predetermined area A1. For example, the relay device 101 is used in a predetermined area A1. More specifically, the relay device 101 is provided, for example, in a predetermined area A1, and is used for communication in the predetermined area A1. Note that the relay device 101 only needs to be usable for communication in the predetermined area A1, and may be provided outside the predetermined area A1.

  The relay device 101 is, for example, a broadband router, and relays communication between the internal network 10 in the predetermined area A1 and the external network 11 outside the predetermined area A1. More specifically, the relay device 101 relays information between the internal network 10 and the external network 11, for example, specifically, relays an IP packet including information. The internal network 10 and the external network 11 are, for example, a LAN (Local Area Network) and the Internet, respectively.

  The relay apparatus 101 has, for example, “myhouse.bb.net” as the host name HN. The relay device 101 has, for example, an IP address LA on the internal network 10 side and an IP address WA on the external network 11 side. As shown in FIG. 1, the IP address LA is, for example, a private IP address set by a user, and here is “192.168.1.1”. The IP address WA is a global IP address, for example, “133.153.101.10”.

  The home device 111, the monitoring device 112, and the watching device 113 are provided, for example, in a predetermined area A1. The in-home device 111 is a light, an air conditioner, or the like, and is turned on or off according to control information received from the relay device 101.

  The monitoring device 112 is, for example, a device for detecting an intruder in the predetermined area A1, and is turned on or off in accordance with control information received from the relay device 101. The watching device 113 is a device for watching a target person such as a child who returns to the predetermined area A1, that is, the house H1, and turns on or off in accordance with control information received from the relay device 101.

[Operation (communication operation on the internal network 10 side)]
Each device in the communication system 301 includes a computer, and an arithmetic processing unit such as a CPU in the computer reads a program including a part or all of each step of the following sequence diagram or flowchart from a memory (not illustrated) and executes the program. . Each of the programs of the plurality of devices can be externally installed. The programs of the plurality of devices are distributed while being stored in a recording medium.

  FIG. 3 is a sequence diagram illustrating an example of an operation when the wireless terminal device transmits and receives information to and from the relay device via the internal network in the communication system according to the first embodiment of the present invention.

  Referring to FIG. 3, for example, when wireless terminal device 202 is present in predetermined area A1, a communication connection establishment process is performed between wireless terminal device 202 and relay device 101 (step S102). More specifically, by performing an IP address assignment process according to the DHCP (Dynamic Host Configuration Protocol) between the wireless terminal device 202 and the relay device 101, the wireless terminal device 202 belongs to the relay device 101 and relays. The device 101 assigns a local IP address. Here, the value of the local IP address to which the wireless terminal device 202 is assigned from the relay device 101 is, for example, “192.168.1.2”.

  In the communication system 301, when the wireless terminal device 202 establishes a communication connection with the relay device 101 via the internal network 10, the relay device 101 becomes a DNS proxy server and a default router of the wireless terminal device 202. In the wireless terminal device 202, for example, the relay device 101 is set as a default router and a priority DNS server.

  Next, the wireless terminal device 202 transmits a name solution request ML1 of the relay device 101 (step S104). More specifically, for example, the wireless terminal device 202 gives priority to the name resolution request ML1 including “myhouse.bb.net” which is a message for acquiring the IP address corresponding to the host name HN at an arbitrary timing. The message is transmitted to the relay device 101 which is a server.

  Next, when the relay device 101 receives the name resolution request ML1 from the wireless terminal device 202, the relay device 101 responds to the received name resolution request ML1 with a message “myhouse.bb” indicating the IP address LA of its own internal network 10 side. .Net = 192.168.1.1 ", and sends the created name resolution response ML2 to the wireless terminal device 202. The wireless terminal device 202 receives the name resolution response ML2 for the name resolution request ML1 (step S106).

  Next, the wireless terminal device 202 transmits the notification information ML3 addressed to the IP address of the relay device 101 indicated by the received name resolution response ML2 (step S108). More specifically, for example, upon receiving the name solution response ML2 from the relay device 101, the wireless terminal device 202 is a mode information and a message for inquiring whether the wireless terminal device 202 is located inside the house H1 or outside the house H1. Notification information ML3 including “HTTP GET where I am?” And its own terminal ID, for example, “ID = 12345” is created.

  Here, the mode information indicates, for example, whether or not an operation mode for communication connection with the relay device 101 is selected in the terminal device 202. Then, the wireless terminal device 202 transmits, for example, the created notification information ML3 to the relay device 101 with the IP address LA included in the name resolution response ML2 as a destination.

  Next, when receiving the notification information ML3 from the wireless terminal device 202, the relay device 101 performs a determination process of determining whether or not the wireless terminal device 202 exists in the predetermined area A1 based on the reception result of the notification information ML3. Perform (Step S110).

  Next, the relay device 101 starts a predetermined process P1 to be performed by itself, for example, based on the result of the determination process (step S112).

  Next, the relay device 101 transmits, for example, a notification response ML4 indicating the result of the determination process as a response to the notification information ML3 (step S114). More specifically, if the relay device 101 determines that the wireless terminal device 202 is present in the house H1, for example, the message “HTTP 200” indicating that the wireless terminal device 202 is present in the house H1 is provided. A notification response ML4 including “OK you are in house” is created, and the created notification response ML4 is transmitted to the wireless terminal device 202.

  Next, upon receiving the notification response ML4 from the relay device 101, the wireless terminal device 202 starts a predetermined process P2 to be performed by itself based on the result of the determination process indicated by the received notification response ML4 (step S116). More specifically, for example, when the result of the determination process indicates that the wireless terminal device 202 is present in the predetermined area A1, the wireless terminal device 202 starts the predetermined process P2 to be performed in the predetermined area A1.

  The order of steps S112 and S114 is not limited to the above, and the order may be changed.

[Operation (communication operation on external network 11 side)]
FIG. 4 is a sequence diagram illustrating an example of an operation when the wireless terminal device transmits and receives information to and from the relay device via the external network in the communication system according to the first embodiment of the present invention.

  Referring to FIG. 4, for example, when wireless terminal device 202 exists outside predetermined area A1, a communication connection establishment process is performed between wireless terminal device 202 and access point 151 or base station 171. (Step S202). Thereby, the wireless terminal device 202 can communicate with the relay device 101 and the DNS server 161. More specifically, between the wireless terminal device 202 and the access point 151 or the base station 171, the setting of the wireless communication system and the frequency, the exchange of the encryption key, and the like are performed. Then, the wireless terminal device 202 receives, via the access point 151 or the base station 171, the assignment of the IP address used by itself and the distribution of the IP address of the DNS proxy server according to the procedure such as the DHCP. In this way, the wireless terminal device 202 can communicate with the relay device 101 and the DNS server 161. Here, the value of the IP address to which the wireless terminal device 202 is assigned is, for example, “133.153.101.11”.

  In the communication system 301, when the wireless terminal device 202 establishes a communication connection with the access point 151 or the base station 171, the access point 151 or the base station 171 becomes a DNS proxy server and a default router of the wireless terminal device 202. In the wireless terminal device 202, for example, the access point 151 or the base station 171 is set as a default router and a priority DNS server.

  Next, the relay device 101 performs, for example, a DNS registration procedure for receiving a DDNS service from the DNS server 161 (step S204). More specifically, the relay apparatus 101 transmits, via the external network 11, a DNS registration request including a host name HN and a global IP address of the relay apparatus, that is, an IP address WA, and a message for requesting a DDNS service. It transmits to the DNS server 161. For example, upon receiving a DNS registration request from the relay device 101, the DNS server 161 acquires the host name HN and the IP address WA from the received DNS registration request, and holds the correspondence between the acquired host name HN and the IP address WA. I do.

  Next, the wireless terminal device 202 transmits the name solution request MW1 of the relay device 101 (step S206). More specifically, for example, the wireless terminal device 202 accesses the name resolution request MW1 including “myhouse.bb.net” which is a message for acquiring the IP address corresponding to the host name HN at an arbitrary timing. The data is transmitted to the DNS server 161 via the point 151 or the base station 171.

  Next, upon receiving the name resolution request MW1 from the wireless terminal device 202, the DNS server 161 acquires the IP address WA corresponding to the host name HN indicated by the received name resolution request MW1, based on the correspondence held by the DNS server 161. I do. Then, the DNS server 161 creates a name resolution response MW2 including, for example, “myhouse.bb.net = 133.153.101.10” which is a message indicating the acquired IP address WA, and creates the created name resolution response MW2. Is transmitted to the wireless terminal device 202 via the access point 151 or the base station 171. The wireless terminal device 202 receives the name resolution response MW2 for the name resolution request MW1 (step S208).

  Next, the wireless terminal device 202 transmits the notification information MW3 addressed to the IP address of the relay device 101 indicated by the received name resolution response MW2 (step S210). More specifically, for example, upon receiving the name resolution response MW2 from the DNS server 161, the wireless terminal device 202 receives the mode information and a message for inquiring whether the wireless terminal device 202 is located inside the house H1 or outside the house H1. Notification information MW3 including “HTTP GET where I am?” And its own terminal ID is created. Then, the wireless terminal device 202 transmits, for example, the created notification information MW3 to the relay device 101 via the access point 151 or the base station 171 with the IP address WA included in the name resolution response MW2 as a destination.

  Next, when receiving the notification information MW3 from the wireless terminal device 202, the relay device 101 performs a determination process of determining whether or not the wireless terminal device 202 is present in the predetermined area A1 based on the reception result of the notification information MW3. Perform (Step S212).

  Next, the relay device 101 starts a predetermined process P3 to be performed by itself, based on a result of the determination process (step S214).

  Next, the relay device 101 transmits, for example, a notification response MW4 indicating the result of the determination process as a response to the notification information MW3 (step S216). More specifically, if the relay device 101 determines that the wireless terminal device 202 exists outside the house H1, for example, the message “HTTP 200” indicating that the wireless terminal device 202 exists outside the house H1 is provided. A notification response MW4 including “OK you are out of house” is created, and the created notification response MW4 is transmitted to the wireless terminal device 202.

  Next, upon receiving the notification response MW4 from the relay device 101, the wireless terminal device 202 starts a predetermined process P4 to be performed by itself based on the result of the determination process indicated by the received notification response MW4 (step S218). More specifically, when, for example, the result of the determination process indicates that the wireless terminal device 202 is outside the predetermined area A1, the wireless terminal device 202 starts a predetermined process P4 to be performed outside the predetermined area A1.

  The order of steps S202 and S204 is not limited to the above, and the order may be changed. The order of steps S214 and S216 is not limited to the above, and the order may be changed.

  In addition, the relay device 101 may transmit a notification response MW4U to the wireless terminal device 202 instead of the notification response MW4 in the above step S216. Details of the notification response MW4U will be described later.

[Configuration of wireless terminal device]
FIG. 5 is a diagram illustrating a configuration of the wireless terminal device in the communication system according to the first embodiment of the present invention.

  Referring to FIG. 5, wireless terminal device 202 includes acquisition unit 41, wireless communication unit 42, and processing unit 43.

  The wireless communication unit 42 in the wireless terminal device 202 operates, for example, in at least one of a wireless LAN mode and a mobile phone network mode. At least one of the wireless LAN mode and the mobile phone network mode is set to “valid” by the user of the wireless terminal device 202, for example.

  For example, when the wireless LAN mode is set to “valid” as the operation mode, the wireless communication unit 42 performs wireless communication with the access point 150 or the access point 151 according to a communication standard such as Wi-Fi and Bluetooth. It is possible to transmit and receive IP packets to and from the access point 150 or the access point 151, respectively.

  More specifically, when the wireless communication unit 42 is located in a communication area formed by the access point 150 or the access point 151 when the wireless LAN mode is set to “valid” as the operation mode, for example, IP packets are transmitted and received with the access point 150 or the access point 151 according to communication standards such as Fi and Bluetooth.

  In addition, for example, when the mobile phone network mode is set to “valid” as the operation mode, the wireless communication unit 42 performs wireless communication with the base station 171 according to communication standards such as 3G and LTE, so that the base station 171 And the transmission and reception of IP packets.

  More specifically, when the mobile communication mode is set to “valid” as the operation mode, the wireless communication unit 42 is located in the communication area formed by the base station 171, for example, 3G and LTE. The base station 171 transmits and receives IP packets in accordance with the communication standard.

  The acquiring unit 41 acquires, for example, mode information indicating whether or not an operation mode for communication connection with the relay apparatus 101 is selected in its own wireless terminal apparatus 202.

  Specifically, for example, when the wireless LAN mode is set to “valid” in the wireless communication unit 42, the acquisition unit 41 can establish a communication connection between the wireless terminal device 202 of itself and the relay device 101. Is determined to be. Then, the obtaining unit 41 creates, for example, mode information indicating that the operation mode for communication connection with the relay apparatus 101 is selected, and outputs the created mode information to the processing unit 43.

  On the other hand, for example, when the wireless LAN mode is set to “invalid” in the wireless communication unit 42, the acquiring unit 41 cannot establish a communication connection between the wireless terminal device 202 of itself and the relay device 101. Judge. Then, the acquiring unit 41 creates, for example, mode information indicating that the operation mode for communication connection with the relay apparatus 101 is not selected, and outputs the created mode information to the processing unit 43.

  The processing unit 43 processes the name resolution requests ML1 and MW1, the name resolution responses ML2 and MW2, the notification information ML3 and MW3, and the notification responses ML4 and MW4.

  More specifically, for example, the processing unit 43 creates the name resolution request ML1 or MW1 at an arbitrary timing, and transmits the created name resolution request ML1 or MW1 to the priority DNS server via the wireless communication unit 42. Is transmitted to the relay apparatus 101 or the DNS server 161.

  Here, the name resolution requests ML1 and MW1 include the same contents. On the other hand, the destinations of the name resolution requests ML1 and MW1 differ depending on whether the relay device 101 is set as the default router and the priority DNS server, or whether the access point 151 or the base station 171 is set. Accordingly, the processing unit 43 creates a name resolution request without considering the destination, and transmits the created name resolution request to the destination set as the default router and the priority DNS server via the wireless communication unit 42.

  For example, when transmitting the name resolution request to a device other than the relay device 101, the processing unit 43 receives a name resolution response MW2 indicating the IP address of the relay device 101 in the external network 11.

  Specifically, for example, when transmitting the name resolution request MW1 to the DNS server 161 via the wireless communication unit 42, the processing unit 43 is a message indicating the IP address of the relay device 101 in the external network 11, that is, the IP address WA. The name resolution response MW2 including “myhouse.bb.net = 133.153.101.10” is received via the wireless communication unit 42.

  The processing unit 43 creates notification information MW3 including, for example, mode information, a message indicating “HTTP GET where I am?”, And a terminal ID as a response to the received name resolution response MW2, and transmits the created notification information MW3. , To the relay device 101 via the wireless communication unit 42 with the IP address WA as a destination.

  Further, for example, when transmitting the name resolution request ML1 to the relay device 101 via the wireless communication unit 42, the processing unit 43 is a message indicating the IP address of the relay device 101 in the internal network 10, that is, the IP address LA, "myhouse. bb.net = 192.168.1.1 "via the wireless communication unit 42.

  The processing unit 43, for example, creates notification information ML3 including mode information, a message indicating “HTTP GET where I am?”, And a terminal ID as a response to the received name resolution response ML2, and transmits the created notification information ML3. , To the relay device 101 via the wireless communication unit 42 with the IP address LA as the destination.

  Here, the notification information MW3 and ML3 include the same content. On the other hand, the destinations of the notification information MW3 and ML3 differ depending on whether the relay device 101 is set as the default router and the priority DNS server, or whether the access point 151 or the base station 171 is set. Therefore, the processing unit 43 creates the notification information without considering the destination, and transmits the created notification information to the destination set as the default router and the priority DNS server via the wireless communication unit 42.

  For example, when the relay device 101 determines that the wireless terminal device 202 itself is present in the predetermined area A1, the processing unit 43 starts a predetermined process P2 to be performed in the predetermined area A1.

  Specifically, for example, when the processing unit 43 receives the notification response ML4 including the message “HTTP 200 OK you are in house” from the relay device 101 via the wireless communication unit 42, the processing unit 43 It recognizes that the wireless terminal device 202 has been determined to be in the predetermined area A1. Then, the processing unit 43 activates, for example, a home dedicated application as the predetermined process P2. Here, the in-home dedicated application is, for example, an application for operating its own wireless terminal device 202 as a television remote control.

  Further, for example, when the relay device 101 determines that the wireless terminal device 202 itself is outside the predetermined area A1, the processing unit 43 starts a predetermined process P4 to be performed outside the predetermined area A1.

  Specifically, for example, when the processing unit 43 receives the notification response MW4 including the message “HTTP 200 OK you are out of house” from the relay device 101 via the wireless communication unit 42, the processing unit 43 It is determined that the wireless terminal device 202 is determined to be outside the predetermined area A1. Then, as the predetermined process P4, the processing unit 43 ends, for example, the activated home dedicated application.

[Relay configuration]
FIG. 6 is a diagram illustrating a configuration of the relay device in the communication system according to the first embodiment of the present invention.

  Referring to FIG. 6, relay device 101 includes LAN-side port 21, LAN-side communication unit (reception unit) 22, processing unit 23, WAN-side communication unit (reception unit) 24, determination unit 25, A WAN-side port 26.

  The LAN port 21 is a port for connecting, for example, an Ethernet (registered trademark) cable connected to the internal network 10. The WAN port 26 is a port for connecting, for example, an Ethernet cable connected to the external network 11.

  The LAN communication section 22 transmits and receives information to and from a device connected to the internal network 10 via the LAN port 21 using the IP address LA, for example. More specifically, the LAN-side communication unit 22 transmits and receives information to and from the home device 111, the monitoring device 112, the watching device 113, and the wireless terminal device 202, for example.

  The LAN communication unit 22 receives the notification information ML3 addressed to the IP address LA of the relay device 101 from the wireless terminal device 202. Further, the LAN-side communication unit 22 acquires, for example, mode information indicating whether or not an operation mode for communication connection with the relay apparatus 101 is selected in the wireless terminal apparatus 202.

  Specifically, when the LAN communication unit 22 receives an IP packet from a device connected to the internal network 10 via the LAN port 21, for example, the information included in the received IP packet (hereinafter, also referred to as packet information) ), The IP address of the source of the IP packet (hereinafter, also referred to as the source IP address) and the IP address LA of the destination of the IP packet are output to the determination unit 25, and the packet information is output. Output to the processing unit 23.

  More specifically, when the LAN communication unit 22 receives an IP packet including the name resolution request ML1 from the wireless terminal device 202 via the LAN port 21, for example, the name resolution request ML1 included in the received IP packet, The source IP address and the IP address LA are output to the determination unit 25, and the name resolution request ML1 is output to the processing unit 23.

  When the LAN communication unit 22 receives an IP packet including the notification information ML3 from the wireless terminal device 202 via the LAN port 21, for example, the notification information ML3 included in the received IP packet, the transmission source IP address, And the IP address LA to the determination unit 25, and the notification information ML3 to the processing unit 23.

  The WAN-side communication unit 24 transmits and receives information to and from a device connected to the external network 11 via the WAN-side port 26, for example, using the IP address WA. More specifically, the WAN-side communication unit 24 transmits and receives information to and from the DNS server 161 and the wireless terminal device 202, for example.

  The WAN-side communication unit 24 receives, from the wireless terminal device 202, notification information MW3 addressed to the IP address WA of its own relay device 101. In addition, the WAN-side communication unit 24 acquires, for example, mode information indicating whether or not an operation mode for communication connection with the relay apparatus 101 is selected in the wireless terminal device 202.

  Specifically, for example, upon receiving an IP packet from a device connected to the external network 11 via the WAN port 26, the WAN-side communication unit 24 receives the packet information, the source IP address, and the destination of the IP packet. It outputs the IP address WA, which is the IP address, to the determination unit 25 and outputs the packet information to the processing unit 23.

  More specifically, when the WAN communication unit 24 receives an IP packet including the notification information MW3 from the wireless terminal device 202 via the WAN port 26, the WAN communication unit 24 transmits the notification information MW3 included in the received IP packet, The IP address and the IP address WA are output to the determination unit 25, and the notification information MW3 is output to the processing unit 23.

  The determination unit 25 performs a determination process of determining whether or not the wireless terminal device 202 exists in the predetermined area A1, based on the result of receiving the notification information from the LAN communication unit 22 or the WAN communication unit 24.

  More specifically, the determination unit 25 performs the determination process further based on, for example, the mode information obtained by the LAN communication unit 22 or the WAN communication unit 24. In other words, the determination unit 25 performs a determination process based on, for example, the mode information acquired by the LAN communication unit 22 or the WAN communication unit 24 and the reception result.

[Judgment processing based on transmission route]
The determination unit 25 determines, for example, the transmission path of the notification information ML3 or MW3, and performs a determination process based on the determination result.

  Specifically, for example, when receiving the packet information and the IP address from the LAN side communication unit 22, the determination unit 25 checks the contents of the received packet information.

  For example, when the received packet information includes a message indicating “HTTP GET where I am?”, The packet information is the notification information ML3 received from the wireless terminal device 202 via the internal network 10. It is determined that the wireless terminal device 202 exists in the predetermined area A1 because the transmission path of the notification information ML3 exists on the internal network 10 side.

  Further, for example, when receiving the packet information and the IP address from the WAN-side communication unit 24, the determination unit 25 checks the contents of the received packet information.

  For example, when the received packet information includes a message indicating “HTTP GET where I am?”, The packet information is the notification information MW3 received from the wireless terminal device 202 via the external network 11. It is determined that the wireless terminal device 202 exists outside the predetermined area A1 because the transmission path of the notification information MW3 exists on the external network 11 side.

[Judgment processing based on IP address]
The determination unit 25 performs the determination process based on, for example, the source address of the notification information ML3 or MW3, that is, the source IP address.

  Specifically, for example, when receiving the packet information, the source IP address, and the IP address LA or WA from the LAN-side communication unit 22 or the WAN-side communication unit 24, the determination unit 25 checks the contents of the received packet information. .

  For example, when the received packet information includes a message indicating “HTTP GET where I am?” In the received packet information, the determination unit 25 recognizes that the received packet information is notification information, and performs the following processing.

  That is, the determination unit 25 determines which of the notification information ML3 and MW3 the notification information is based on, for example, the value of the transmission source IP address received from the LAN communication unit 22 or the WAN communication unit 24. .

  For example, when the value of the source IP address is “192.168.1.2”, the determination unit 25 confirms that the value is within the range of the private IP address, and transmits the notification information to the internal network 10. Is determined to be the notification information ML3 received from the side. Then, the determination unit 25 determines, for example, that the wireless terminal device 202 that has transmitted the notification information ML3 exists in the predetermined area A1.

  Further, for example, when the value of the transmission source IP address is “133.153.101.11”, the determination unit 25 confirms that the value is out of the range of the private IP address, and determines that the notification information is external. It is determined that the notification information MW3 is received from the network 11 side. Then, the determination unit 25 determines, for example, that the wireless terminal device 202 that has transmitted the notification information MW3 exists outside the predetermined area A1.

  The determination unit 25 is not limited to the configuration in which the determination unit 25 performs the determination process based on the transmission source address of the notification information ML3 or MW3, and the determination unit 25 performs the determination process based on the destination of the notification information ML3 or MW3. There may be.

  Further, in the relay device according to the first embodiment of the present invention, the determination unit 25 is configured to perform both the determination process based on the transmission path and the determination process based on the IP address. It does not do. The determination unit 25 may be configured to perform any one of these determination processes.

[Accuracy of judgment result]
For example, when the mode information included in the notification information ML3 or MW3 indicates that the operation mode for communication connection with the relay apparatus 101 is selected in the wireless terminal device 202, the determination unit 25 indicates that the accuracy of the determination result is high. Then, the processing unit 23 is notified of the determination result and the terminal ID as a result of the determination process.

  On the other hand, for example, when the mode information included in the notification information ML3 or MW3 indicates that the operation mode for communication connection with the relay apparatus 101 is not selected in the wireless terminal device 202, the determination unit 25 determines that the accuracy of the determination result is To the effect that it is low, the determination result and the terminal ID are notified to the processing unit 23 as a result of the determination process.

  The processing unit 23 processes, for example, the name resolution request ML1, the name resolution response ML2, the notification information ML3, MW3, and the notification responses ML4, MW4.

  More specifically, when the processing unit 23 receives the name resolution request ML1 from the wireless terminal device 202 via the LAN-side communication unit 22, for example, the processing unit 23 transmits its own IP address in the internal network 10 as a response to the received name resolution request ML1. A name resolution response ML2 indicating the address LA is created, and the created name resolution response ML2 is transmitted to the wireless terminal device 202 via the LAN-side communication unit 22.

[Predetermined processing P1, P3]
The processing unit 23 starts the predetermined processing P1 or P3 to be performed by itself, based on the result of the determination processing, for example. In addition, the processing unit 23 notifies the wireless terminal device 202 of the result of the determination process, for example.

  Specifically, for example, the processing unit 23 holds, for each registered terminal ID, a flag indicating whether or not the corresponding wireless terminal device 202 exists in the predetermined area A1. Here, the processing unit 23 holds, for example, flags FA to FC respectively corresponding to the terminal IDs of the wireless terminal devices 202A to 202C.

  The flags FA to FC include, for example, “the corresponding wireless terminal device 202 exists with high accuracy in the predetermined area A1”, “the corresponding wireless terminal device 202 exists with high accuracy outside the predetermined area A1”, and “ It is unknown whether or not the corresponding wireless terminal device 202 exists in the predetermined area A1 ", which can be set to" 1 "," -1 ", or" 0 ", respectively.

  The processing unit 23 receives, for example, the notification information ML3 from the LAN-side communication unit 22 and a determination result indicating that the accuracy of the determination result is high from the determination unit 25, indicating that the wireless terminal device 202 is present in the predetermined area A1, and When the terminal ID is notified, the following processing is performed.

  That is, the processing unit 23 sets, for example, a flag corresponding to the terminal ID to “1”, creates a notification response ML4, and transmits the created notification response ML4 to the wireless terminal device 202 indicated by the terminal ID on the LAN side. It is transmitted via the communication unit 22 and the internal network 10.

  Specifically, for example, when the terminal ID is the terminal ID of the wireless terminal device 202A, the processing unit 23 sets the flag FA to “1” and sets the notification response ML4 to the LAN-side communication unit 22 and the internal network. 10 to the wireless terminal device 202A.

  Further, for example, the processing unit 23 receives the notification information MW3 from the WAN-side communication unit 24, and indicates that the accuracy of the determination result is high from the determination unit 25, and indicates that the wireless terminal device 202 exists outside the predetermined area A1. When the notification of the judgment result and the terminal ID is received, the following processing is performed.

  That is, for example, the processing unit 23 sets the flag corresponding to the terminal ID to “−1”, creates the notification response MW4, and transmits the created notification response MW4 to the wireless terminal device 202 indicated by the terminal ID in the WAN. It is transmitted via the side communication unit 24 and the external network 11.

  Specifically, for example, when the terminal ID is the terminal ID of the wireless terminal device 202B, the processing unit 23 sets the flag FB to “−1” and sets the notification response MW4 to the WAN-side communication unit 24 and the external The data is transmitted to the wireless terminal device 202B via the network 11.

  Further, for example, the processing unit 23 receives the notification information MW3 from the WAN-side communication unit 24, and indicates that the accuracy of the determination result is low from the determination unit 25, and indicates that the wireless terminal device 202 exists outside the predetermined area A1. When the notification of the judgment result and the terminal ID is received, the following processing is performed.

  That is, for example, the processing unit 23 sets a flag corresponding to the terminal ID to “0” and includes a message indicating that it is unknown whether the corresponding wireless terminal device 202 exists in the predetermined area A1. The notification response MW4U is created, and the created notification response MW4U is transmitted to the wireless terminal device 202 indicated by the terminal ID via the WAN communication unit 24 and the external network 11.

  Specifically, for example, when the terminal ID is the terminal ID of the wireless terminal device 202C, the processing unit 23 sets the flag FC to “0” and sets the notification response MW4U to the WAN-side communication unit 24 and the external network. 11 to the wireless terminal device 202C.

  The processing unit 23 monitors, for example, the values of the flags FA to FC, and starts the predetermined processing P1 or P3 based on the monitoring result.

  More specifically, the processing unit 23 changes, for example, from a state in which at least one of the flags FA to FC is “1” to a state in which all the values of the flags FA to FC are “−1”. When the transition is made, it is determined that all the users of the wireless terminal devices 202A to 202C have gone out and the target area A1 is in the unmanned state, and the predetermined process P3 is started.

  Specifically, the processing unit 23 performs, for example, control for turning on the monitoring device 112 and control for turning off the watching device 113 and the in-home device 111 as the predetermined process P3.

  More specifically, the processing unit 23 creates and creates, for example, control information for turning on the monitoring device 112, control information for turning off the watching device 113, and control information for turning off the home device 111. The control information is transmitted to the monitoring device 112, the watching device 113, and the home device 111 via the LAN-side communication unit 22 and the internal network 10, respectively.

  For example, when a transition is made from a state in which the values of the flags FA to FC are all “−1” to a state in which at least one of the flags FA to FC is “1”, the processing unit 23 At least one of the users of the devices 202A to 202C returns home, determines that the target area A1 is in a manned state, and starts the predetermined process P1.

  Specifically, the processing unit 23 performs, as the predetermined process P1, for example, control for turning off the monitoring device 112 and control for turning on the home device 111. More specifically, the processing unit 23 creates, for example, control information for turning off the monitoring device 112 and control information for turning on the home device 111, and transmits the created control information to the LAN-side communication unit 22. The information is transmitted to the monitoring device 112 and the in-home device 111 via the internal network 10.

  Further, the processing unit 23 determines whether or not the user who has returned home is a child or an elderly person, based on the registered user information and the terminal ID included in the notification information, for example. When determining that the user who has returned home is a child or an elderly person, the processing unit 23 performs control for turning on the watching apparatus 113, for example. More specifically, the processing unit 23 creates, for example, control information for turning on the watching apparatus 113, and transmits the created control information to the watching apparatus 113 via the LAN-side communication unit 22 and the internal network 10.

  In the control of turning on or off the in-home device 111, the processing unit 23 specifies which of the users of the wireless terminal devices 202A to 202C has gone out or returned based on the value of the flag, and determines whether the house H1 , The control for individually turning on or off the lights and the air conditioner in the room of the specified user may be performed.

  In addition, the communication system according to the first embodiment of the present invention has a configuration including the wireless terminal device 202 that performs wireless communication, but is not limited thereto. The communication system 301 may include a terminal device that performs wired communication instead of the wireless terminal device 202.

  Further, in the communication system according to the first embodiment of the present invention, the relay device 101 has the configuration including the determination unit 25, but is not limited thereto. In the communication system 301, any device other than the wireless terminal device 202 may have the configuration including the determination unit 25.

  Further, in the relay device according to the first embodiment of the present invention, the determination unit 25 determines whether the mode information acquired by the LAN-side communication unit 22 or the WAN-side communication unit 24 and the LAN-side communication unit 22 or the WAN-side communication Although the configuration has been described in which the determination process is performed based on the reception result of the notification information by the unit 24, the configuration is not limited to this. The determination unit 25 may be configured to perform the determination process based on the reception result.

  By the way, beyond the techniques described in Patent Literatures 1 to 3, there is a demand for a technique for more correctly determining a user who uses a terminal device, for example, at home or going out.

  On the other hand, in the communication system according to the first embodiment of the present invention, the relay device 101 is used in the predetermined area A1. The wireless terminal device 202 transmits the name resolution request ML1 or MW1 of the relay device 101, and receives the name resolution response ML2 or MW2 for the name resolution request ML1 or MW1, respectively. The wireless terminal device 202 transmits the notification information ML3 or MW3 addressed to the IP address LA or WA of the relay device 101 indicated by the received name resolution response ML2 or MW2, respectively. Then, the determination unit 25 performs a determination process of determining whether the wireless terminal device 202 exists in the predetermined area A1 based on the reception result of the notification information ML3 or MW3.

  With such a configuration, for example, the reception result of notification information ML3 when wireless terminal device 202 is in predetermined area A1 and the reception result of notification information MW3 when wireless terminal device 202 is not in predetermined area A1 are If different, it can be more correctly determined from the reception result of the notification information ML3 or MW3 whether the wireless terminal device 202 exists in the predetermined area A1. Further, the configuration using the reception result of the notification information ML3 or MW3 from the wireless terminal device 202 is more accurate than a method using a signal from a GPS satellite in which a position calculation error increases in a predetermined area A1 such as a house. A determination process can be performed. Furthermore, when the terminal device performs wired communication instead of the wireless terminal device 202, the communication connection destination can be more reliably determined, so that a more correct determination process can be performed.

  In the communication system according to the first embodiment of the present invention, the determination unit 25 determines the transmission path of the notification information ML3 or MW3, and performs a determination process based on the determination result.

  With such a configuration, for example, when the wireless terminal device 202 is present in the predetermined area A1, the transmission path in the predetermined area A1 through which the notification information ML3 is transmitted, and when the wireless terminal device 202 is not present in the predetermined area A1, Since a transmission path outside the predetermined area A1 through which the information MW3 is transmitted can be determined, more accurate determination processing can be performed.

  In the communication system according to the first embodiment of the present invention, the relay device 101 relays communication between the internal network 10 in the predetermined area A1 and the external network 11 outside the predetermined area A1. Then, the determination unit 25 performs a determination process based on the transmission source address of the notification information ML3 or MW3.

  With such a configuration, for example, any one of the internal network 10 used by the wireless terminal device 202 existing in the predetermined area A1 and the external network 11 used by the wireless terminal device 202 existing outside the predetermined area A1 is notified to the notification information ML3 or MW3. Can be recognized from the address of the transmission source of the notification information ML3 or MW3, so that a more correct determination process can be performed based on the transmission source address of the notification information ML3 or MW3.

  Further, in the communication system according to the first embodiment of the present invention, relay apparatus 101 includes determination section 25 and notifies wireless terminal apparatus 202 of notification response ML4, MW4 or MW4U indicating the result of the determination processing.

  With such a configuration, in the wireless terminal device 202, for example, a process according to the result of the determination process can be performed.

  Further, in the communication system according to the first embodiment of the present invention, in the wireless terminal device 202, the acquisition unit 41 acquires mode information indicating whether an operation mode for communication connection with the relay device 101 is selected. I do. Then, the determination unit 25 performs a determination process based on the mode information acquired by the acquisition unit 41 and the reception result.

  With such a configuration, when the wireless terminal device 202 is in the predetermined area A1, it is possible to recognize whether or not the wireless terminal device 202 is in an operation mode for establishing a communication connection with the relay device 101. When the operation mode is not selected, for example, it can be evaluated that the accuracy of the determination result is low.

  Further, in the communication system according to the first embodiment of the present invention, when receiving the name resolution request ML1 from the wireless terminal device 202, the relay device 101 receives the name resolution response indicating its own IP address LA in the internal network 10. ML2 is transmitted to the wireless terminal device 202. Then, when transmitting the name resolution request MW1 to a device other than the relay device 101, specifically, the DNS server 161, the wireless terminal device 202 transmits a name resolution response MW2 indicating the IP address WA of the relay device 101 in the external network 11. Receive.

  With such a configuration, the wireless terminal device 202 acquires the IP address LA or WA of the relay device 101 on the network side to which the wireless terminal device 202 is connected, regardless of whether the wireless terminal device 202 is connected to the internal network 10 or the external network 11. Can be.

  Also, in the communication system according to the first embodiment of the present invention, when the determination unit 25 determines that the wireless terminal device 202 is present in the predetermined area A1, the wireless terminal device 202 performs a predetermined process P2 to be performed in the predetermined area A1. Start.

  With such a configuration, the wireless terminal device 202 can automatically start an in-home application to be executed in the predetermined area A1, for example, an application for operating the wireless terminal device 202 as a television remote control.

  Further, the relay device according to the first embodiment of the present invention is used in a predetermined area A1. The LAN communication unit 22 receives the notification information ML3 addressed to the IP address LA of the relay device 101 from the wireless terminal device 202. The WAN-side communication unit 24 receives, from the wireless terminal device 202, notification information MW3 addressed to the IP address WA of its own relay device 101. Then, the determination unit 25 determines whether or not the wireless terminal device 202 exists in the predetermined area A1 based on the reception result of the notification information ML3 or MW3 by the LAN communication unit 22 or the WAN communication unit 24, respectively. Perform processing.

  With such a configuration, for example, the reception result of notification information ML3 when wireless terminal device 202 is in predetermined area A1 and the reception result of notification information MW3 when wireless terminal device 202 is not in predetermined area A1 are If different, it can be more correctly determined from the reception result of the notification information ML3 or MW3 whether the wireless terminal device 202 exists in the predetermined area A1. Further, the configuration using the reception result of the notification information ML3 or MW3 from the wireless terminal device 202 is more accurate than a method using a signal from a GPS satellite in which a position calculation error increases in a predetermined area A1 such as a house. A determination process can be performed. Furthermore, when the terminal device performs wired communication instead of the wireless terminal device 202, the communication connection destination can be more reliably determined, so that a more correct determination process can be performed.

  Next, another embodiment of the present invention will be described with reference to the drawings. In the drawings, the same or corresponding portions have the same reference characters allotted, and description thereof will not be repeated.

<Second embodiment>
This embodiment relates to a communication system in which a determination process is performed in a wireless terminal device as compared with the communication system according to the first embodiment. The contents other than those described below are the same as those of the communication system according to the first embodiment.

[Configuration and basic operation]
FIG. 7 is a diagram illustrating a configuration of a communication system according to the second embodiment of the present invention.

  Referring to FIG. 7, communication system 302 differs from communication system 301 according to the first embodiment of the present invention in that relay device 102 and wireless terminal devices 202A, 202B, and 202C are used instead of relay device 101 and wireless terminal devices 202A, 202B, and 202C. The mobile terminal includes wireless terminal devices 203A, 203B, and 203C.

  Hereinafter, each of the wireless terminal devices 203A, 203B, and 203C is also referred to as a wireless terminal device 203. In FIG. 1, three wireless terminal devices 203 are representatively shown, but more or fewer wireless terminal devices 203 may be provided. Further, the relay device 102 may be integrated with at least one of the access points 150 and 151 in the communication system 302.

  Referring to FIG. 2 again, relay apparatus 102 is used in predetermined area A1. The relay device 102 relays communication between the internal network 10 in the predetermined area A1 and the external network 11 outside the predetermined area A1.

[Operation (communication operation on the internal network 10 side)]
FIG. 8 is a sequence diagram illustrating an example of an operation when the wireless terminal device transmits and receives information to and from the relay device via the internal network in the communication system according to the second embodiment of the present invention.

  Referring to FIG. 8, for example, when wireless terminal device 203 is present in predetermined area A1, a communication connection establishment process is performed between wireless terminal device 203 and relay device 102 (step S302).

  Next, the wireless terminal device 203 transmits a name resolution request ML1 of the relay device 102 (step S304).

  Next, when the relay device 102 receives the name resolution request ML1 from the wireless terminal device 203, the relay device 102 responds to the received name resolution request ML1 with a message “myhouse.bb” indicating the IP address LA of its own internal network 10 side. .Net = 192.168.1.1 ", and transmits the created name resolution response ML2 to the wireless terminal device 203. The wireless terminal device 203 receives the name resolution response ML2 for the name resolution request ML1 (step S306).

  Next, upon receiving the name resolution response ML2 from the relay device 102, the wireless terminal device 203 determines whether the wireless terminal device 203 exists in the predetermined area A1 based on the address of the relay device 102 indicated by the received name resolution response ML2. A judgment process for judging whether or not is performed is performed (step S308).

  Next, the wireless terminal device 203 starts a predetermined process P2 to be performed by itself based on the result of the determination process (step S310). More specifically, for example, when the result of the determination process indicates that the wireless terminal device 203 is present in the predetermined area A1, the wireless terminal device 203 starts a predetermined process P2 to be performed in the predetermined area A1.

  Next, wireless terminal apparatus 203 notifies relay apparatus 102 of the result of the determination processing, for example. More specifically, upon receiving the name resolution response ML2 from the relay device 102, for example, the wireless terminal device 203 creates notification information ML3S including the accuracy of the determination result, the determination result, and its own terminal ID. Then, the wireless terminal device 203 transmits, for example, the created notification information ML3S to the relay device 102 with the IP address LA, which is the IP address of the relay device 102 indicated by the name resolution response ML2, as the destination (step S312).

  Next, when receiving the notification information ML3S from the wireless terminal device 203, the relay device 102 starts a predetermined process P1 to be performed by itself based on the result of the determination process indicated by the received notification information ML3S (step S314).

  The order of steps S310 and S312 is not limited to the above, and the order may be changed.

[Operation (communication operation on external network 11 side)]
FIG. 9 is a sequence diagram illustrating an example of an operation when the wireless terminal device transmits and receives information to and from the relay device via the external network in the communication system according to the second embodiment of the present invention.

  Referring to FIG. 9, for example, when wireless terminal device 203 exists outside predetermined area A1, a process of establishing a communication connection is performed between wireless terminal device 203 and access point 151 or base station 171. (Step S402). Accordingly, the wireless terminal device 203 can communicate with the relay device 102 and the DNS server 161.

  Next, the relay device 102 performs, for example, a DNS registration procedure for receiving a DDNS service from the DNS server 161 (step S404).

  Next, the wireless terminal device 203 transmits a name resolution request MW1 of the relay device 102 (step S406). More specifically, for example, the wireless terminal device 203 accesses the name resolution request MW1 including “myhouse.bb.net” that is a message for acquiring the IP address corresponding to the host name HN at an arbitrary timing. The data is transmitted to the DNS server 161 via the point 151 or the base station 171.

  Next, upon receiving the name resolution request MW1 from the wireless terminal device 203, the DNS server 161 receives the host name HN indicated by the received name resolution request MW1 based on the correspondence between the host name held by itself and the global IP address. To obtain the IP address WA corresponding to. Then, the DNS server 161 creates a name resolution response MW2 including, for example, “myhouse.bb.net = 133.153.101.10” which is a message indicating the acquired IP address WA, and creates the created name resolution response MW2. Is transmitted to the wireless terminal device 203 via the access point 151 or the base station 171. The wireless terminal device 203 receives the name resolution response MW2 for the name resolution request MW1 (step S408).

  Next, upon receiving the name resolution response MW2 from the relay device 102, the wireless terminal device 203 determines whether the wireless terminal device 203 exists in the predetermined area A1 based on the address of the relay device 102 indicated by the received name resolution response MW2. A determination process is performed to determine whether or not there is (Step S410).

  Next, the wireless terminal device 203 starts a predetermined process P4 to be performed by itself based on the result of the determination process (step S412). More specifically, when, for example, the result of the determination process indicates that the wireless terminal device 203 is outside the predetermined area A1, the wireless terminal device 203 starts a predetermined process P4 to be performed outside the predetermined area A1.

  Next, wireless terminal apparatus 203 notifies relay apparatus 102 of the result of the determination processing, for example. More specifically, upon receiving the name resolution response MW2 from the DNS server 161, for example, the wireless terminal device 203 creates notification information MW3S including the accuracy of the determination result, the determination result, and its own terminal ID. Then, the wireless terminal device 203 transmits, for example, the created notification information MW3S to the relay device 102 via the access point 151 or the base station 171 with the IP address WA included in the name resolution response MW2 as a destination (step S414).

  Next, when receiving the notification information MW3S from the wireless terminal device 203, the relay device 102 starts a predetermined process P3 to be performed by itself based on the result of the determination process indicated by the received notification information MW3S (step S416).

  The order of steps S402 and S404 is not limited to the above, and the order may be changed. Further, the order of steps S412 and S414 is not limited to the above, and the order may be changed.

  In addition, the wireless terminal device 203 may transmit the notification information MW3SU instead of the notification information MW3S to the relay device 102 in step S414. Details of the notification information MW3SU will be described later.

[Configuration of wireless terminal device]
FIG. 10 is a diagram illustrating a configuration of a wireless terminal device in the communication system according to the second embodiment of the present invention.

  Referring to FIG. 10, wireless terminal apparatus 203 is different from wireless terminal apparatus 202 according to the first embodiment of the present invention in further including a determination unit 45.

  The acquiring unit 41 acquires, for example, mode information indicating whether or not an operation mode for communication connection with the relay device 102 is selected in its own wireless terminal device 203.

  Specifically, for example, when the wireless LAN mode is set to “valid” in the wireless communication unit 42, the acquisition unit 41 can establish a communication connection between the wireless terminal device 203 of itself and the relay device 102. Is determined to be. Then, for example, the acquisition unit 41 creates mode information indicating that an operation mode for communication connection with the relay device 102 is selected, and outputs the created mode information to the determination unit 45.

  On the other hand, for example, when the wireless LAN mode is set to “invalid” in the wireless communication unit 42, the acquiring unit 41 cannot establish a communication connection between the wireless terminal device 203 and the relay device 102. Judge. Then, the obtaining unit 41 creates, for example, mode information indicating that the operation mode for communication connection with the relay device 102 is not selected, and outputs the created mode information to the determining unit 45.

  Upon receiving an IP packet from base station 171, access point 150, or access point 151, wireless communication unit 42 outputs packet information, which is information included in the received IP packet, to determination unit 45 and processing unit 43.

  More specifically, when receiving the IP packet including the name resolution response ML2 from the relay device 102 via the access point 150, the wireless communication unit 42 determines the name resolution response ML2 included in the received IP packet by the determination unit 45 and the processing. Output to the unit 43.

  Further, when receiving the IP packet including the name resolution response MW2 from the DNS server 161 via the access point 151 or the base station 171, the wireless communication unit 42 determines the name resolution response MW2 included in the received IP packet by the determination unit 45 and Output to the processing unit 43.

  The determination unit 45 performs a determination process of determining whether or not its own wireless terminal device 203 exists in the predetermined area A1 based on the address of the relay device 102 indicated by the name resolution response ML2 or MW2.

  Specifically, the determination unit 45 performs the determination process based on, for example, the mode information acquired by the acquisition unit 41. In other words, the determination unit 45 performs the determination process based on, for example, the mode information acquired by the acquisition unit 41 and the address of the relay device 102 indicated by the name resolution response ML2 or MW2.

  More specifically, when receiving the packet information from the wireless communication unit 42, the determination unit 45 checks the content of the received packet information.

  The determination unit 45 indicates, for example, “myhouse.bb.net = 192.168.1.1” or “myhouse.bb.net = 133.153.3.101.10” in the packet information received from the wireless communication unit 42. If a message is included, the received packet information is recognized as a name resolution response, and the following processing is performed.

  That is, the determination unit 45 determines which of the name resolution responses ML2 and MW2 the name resolution response is based on, for example, the value of the IP address indicated by the name resolution response received from the wireless communication unit 42.

  Specifically, when the value of the IP address indicated by the name resolution response is, for example, “192.168.1.1”, the determination unit 45 confirms that the value is within the range of the private IP address, It is determined that the name resolution response is the name resolution response ML2 received via the access point 150. Then, the determination unit 45 determines that its own wireless terminal device 203 exists in the predetermined area A1.

  When the value of the IP address indicated by the name resolution response is, for example, “133.153.101.10”, the determination unit 45 confirms that the value is out of the range of the private IP address, and It is determined that the response is the name resolution response MW2 received via the access point 151 or the base station 171. Then, the determination unit 45 determines that its own wireless terminal device 203 exists outside the predetermined area A1.

[Accuracy of judgment processing]
For example, when the mode information received from the acquisition unit 41 indicates that the operation mode for communication connection with the relay device 102 is selected, the determination unit 45 determines that the accuracy of the determination result is high and determines the determination result. Is notified to the processing section 43 as a result.

  On the other hand, for example, when the mode information received from the acquisition unit 41 indicates that the operation mode for communication connection with the relay device 102 has not been selected, the determination unit 45 determines that the accuracy of the determination result is low and that the determination result is low. The processing unit 43 is notified as a result of the determination processing.

  The processing unit 43 processes the name resolution requests ML1 and MW1, the name resolution responses ML2 and MW2, the notification information ML3 and MW3, and the notification responses ML4 and MW4.

  More specifically, for example, the processing unit 43 creates the name resolution request ML1 or MW1 at an arbitrary timing, and transmits the created name resolution request ML1 or MW1 to the priority DNS server via the wireless communication unit 42. To the relay device 102 or the DNS server 161.

  When transmitting the name resolution request ML1 to the relay device 102 via the wireless communication unit 42, the processing unit 43 transmits a message indicating the IP address of the relay device 102 in the internal network 10, that is, the IP address LA, "myhouse.bb.net = 192.168.1.1 "is received via the wireless communication unit 42.

  The processing unit 43 notifies the relay device 102 of the result of the determination process, for example. In addition, for example, when the determination unit 45 determines that the wireless terminal device 203 is present in the predetermined area A1, the processing unit 43 starts a predetermined process P2 to be performed in the predetermined area A1.

  More specifically, the processing unit 43 receives, for example, the name resolution response ML2 via the wireless communication unit 42, and indicates that the accuracy of the determination result from the determination unit 45 is high, and that the own wireless terminal device 203 has the predetermined area A1 When the notification of the result of the determination processing indicating that the information is present is received, the predetermined processing P2 is started and the following processing is performed.

  That is, the processing unit 43 creates and creates the notification information ML3S including, for example, that the accuracy of the determination result is high, the determination result indicating that the own wireless terminal device 203 exists in the predetermined area A1, and the terminal ID. The notification information ML3S is transmitted to the relay device 102 via the wireless communication unit 42 with the IP address LA, which is the IP address of the relay device 102 indicated by the name resolution response ML2, as the destination.

  Further, for example, when transmitting the name resolution request to a device other than the relay device 102, the processing unit 43 receives a name resolution response MW2 indicating the IP address of the relay device 102 in the external network 11. Further, for example, when the determination unit 45 determines that the wireless terminal device 203 is outside the predetermined area A1, the processing unit 43 starts a predetermined process P4 to be performed outside the predetermined area A1.

  Specifically, for example, when transmitting the name resolution request MW1 to the DNS server 161 via the wireless communication unit 42, the processing unit 43 is a message indicating the IP address of the relay device 102 in the external network 11, that is, the IP address WA. The name resolution response MW2 including “myhouse.bb.net = 133.153.101.10” is received via the wireless communication unit 42.

  The processing unit 43 receives, for example, the name resolution response MW2 via the wireless communication unit 42, and indicates that the accuracy of the determination result is high from the determination unit 45, and that the own wireless terminal device 203 exists outside the predetermined area A1. When the notification of the result of the determination indicating the above is received, the predetermined process P4 is started and the following process is performed.

  That is, the processing unit 43 creates the notification information MW3S including, for example, that the accuracy of the determination result is high, the determination result indicating that the own wireless terminal device 203 exists outside the predetermined area A1, and the terminal ID, The created notification information MW3S is transmitted to the relay device 102 via the wireless communication unit 42 with the IP address WA, which is the IP address of the relay device 102 indicated by the name resolution response MW2, as the destination.

  Further, the processing unit 43 receives, for example, the name resolution response MW2 via the wireless communication unit 42, and indicates that the accuracy of the determination result from the determination unit 45 is low, and that the own wireless terminal device 203 is outside the predetermined area A1. Upon receiving the notification of the result of the determination process indicating that the file exists, the following process is performed.

  That is, the processing unit 43 creates notification information MW3SU including, for example, the fact that the accuracy of the determination result is low, the determination result indicating that the own wireless terminal device 203 exists outside the predetermined area A1, and the terminal ID, The created notification information MW3SU is transmitted to the relay device 102 via the wireless communication unit 42 with the IP address WA as a destination.

[Relay configuration]
FIG. 11 is a diagram illustrating a configuration of a relay device in the communication system according to the second embodiment of the present invention.

  Referring to FIG. 11, relay device 102 is different from relay device 101 according to the first embodiment of the present invention in that it does not include determination unit 25.

  The LAN communication unit 22 receives a name resolution request ML1 addressed to the IP address LA of the relay device 102 from the wireless terminal device 203 via the LAN port 21 and sends the received name resolution request ML1 to the processing unit 23. Output.

  Further, the LAN-side communication unit 22 receives the notification information ML3S addressed to the IP address LA of its own relay device 102 from the wireless terminal device 203 via the LAN-side port 21, and sends the received notification information ML3S to the processing unit 23. Output.

  The WAN communication unit 24 receives the notification information MW3S and MW3SU addressed to the IP address WA of the relay device 102 from the wireless terminal device 203 via the WAN port 26, and processes the received notification information MW3S and MW3SU, respectively. Output to the unit 23.

  The processing unit 23 processes the name resolution request ML1, the name resolution response ML2, and the notification information ML3S, MW3S, MW3SU, for example.

[Predetermined processing P1, P3]
The processing unit 23 starts a predetermined process P1 or P3 to be performed by itself, based on the notification information ML3S, MW3S, MW3SU, for example.

  More specifically, when the processing unit 23 receives the notification information ML3S from the LAN-side communication unit 22, the processing unit 23 determines that the accuracy of the determination result is high, indicates that the wireless terminal device 203 exists in the predetermined area A1, and The ID is acquired from the notification information ML3S, and the flag corresponding to the terminal ID is set to “1”.

  Further, when receiving the notification information MW3S from the WAN-side communication unit 24, the processing unit 23 determines that the accuracy of the determination result is high, the determination result indicating that the wireless terminal device 203 is outside the predetermined area A1, and The terminal ID is acquired from the notification information MW3S, and the flag corresponding to the terminal ID is set to “−1”.

  Further, when receiving the notification information MW3SU from the WAN-side communication unit 24, the processing unit 23 determines that the accuracy of the determination result is low, the determination result indicating that its wireless terminal device 203 exists outside the predetermined area A1, and The terminal ID is acquired from the notification information MW3SU, and the flag corresponding to the terminal ID is set to “0”.

  The processing unit 23 monitors, for example, the values of the flags FA to FC, and starts the predetermined processing P1 or P3 based on the monitoring result.

  In the communication system according to the second embodiment of the present invention, the wireless terminal device 203 has the configuration including the determination unit 45, but the configuration is not limited to this. In the communication system 302, any device other than the relay device 102 may include the determination unit 45.

  In the wireless terminal device according to the second embodiment of the present invention, determination unit 45 determines based on the mode information acquired by acquisition unit 41 and the address of relay device 102 indicated by name resolution response ML2 or MW2. Although it is described that the determination process is performed, the configuration is not limited to this. The determination unit 45 may be configured to perform the determination process based on the address of the relay device 102 indicated by the name resolution response ML2 or MW2.

  As described above, in the communication system according to the second embodiment of the present invention, the relay device 102 relays communication between the internal network 10 in the predetermined area A1 and the external network 11 outside the predetermined area A1. The wireless terminal device 203 transmits the name resolution request ML1 or MW1 of the relay device 102, and receives the name resolution response ML2 or MW2 for the name resolution request ML1 or MW1, respectively. The determination unit 45 performs a determination process of determining whether or not its own wireless terminal device 203 exists in the predetermined area A1 based on the IP address of the relay device 102 indicated by the name resolution response ML2 or MW2.

  With such a configuration, for example, the wireless terminal can use any one of the internal network 10 used by the wireless terminal device 203 existing in the predetermined area A1 and the external network 11 used by the wireless terminal device 203 existing outside the predetermined area A1. Whether the communication between the device 203 and the relay device 102 is performed can be recognized from the IP address of the relay device 102 indicated by the name resolution response ML2 or MW2, and from the IP address, the wireless terminal device 203 moves to the predetermined area A1. It is possible to more correctly determine whether or not it exists. Further, the configuration using the IP address of the relay device 102 indicated by the name resolution response ML2 or MW2 is more accurate than a method using a signal from a GPS satellite in which a position calculation error increases in a predetermined area A1 such as a house. A determination process can be performed. Furthermore, when the terminal device performs wired communication instead of the wireless terminal device 203, the communication connection destination can be more reliably determined, so that a more correct determination process can be performed.

  In the communication system according to the second embodiment of the present invention, in wireless terminal device 203, obtaining section 41 obtains mode information indicating whether or not an operation mode for communication connection with relay apparatus 102 has been selected. I do. Then, the determination unit 45 performs a determination process based on the mode information acquired by the acquisition unit 41 and the IP address.

  With such a configuration, when the wireless terminal device 203 is in the predetermined area A1, it is possible to recognize whether or not the wireless terminal device 203 is in an operation mode for establishing a communication connection with the relay device 102. When the operation mode is not selected, for example, it can be evaluated that the accuracy of the determination result is low.

  Also, in the communication system according to the second embodiment of the present invention, when receiving the name resolution request ML1 from the wireless terminal device 203, the relay device 102 receives the name resolution response indicating its own IP address LA in the internal network 10. ML2 is transmitted to the wireless terminal device 203. Then, when transmitting the name resolution request MW1 to a device other than the relay device 102, specifically, the DNS server 161, the wireless terminal device 203 sends a name resolution response MW2 indicating the IP address WA of the relay device 102 in the external network 11. Receive.

  With this configuration, the wireless terminal device 203 acquires the IP address LA or WA of the relay device 102 on the network side to which the wireless terminal device 203 is connected, regardless of whether the wireless terminal device 203 is connected to the internal network 10 or the external network 11. Can be.

  In the communication system according to the second embodiment of the present invention, wireless terminal device 203 includes determination unit 45, and notifies relay device 102 of the result of the determination process.

  With such a configuration, the relay device 102 can perform a process according to the result of the determination process, for example.

  Further, in the communication system according to the second embodiment of the present invention, when the radio terminal device 203 determines that it is present in the predetermined area A1, it starts a predetermined process P2 to be performed in the predetermined area A1.

  With such a configuration, in the wireless terminal device 203, an in-home application to be executed in the predetermined area A1, for example, an application for operating the wireless terminal device 203 as a television remote control can be automatically started.

  Other configurations and operations are the same as those of the communication system according to the first embodiment, and thus detailed description will not be repeated here.

  In addition, some or all of the components and operations of each device according to the first embodiment and the second embodiment of the present invention can be appropriately combined.

  The above embodiment is to be considered in all respects as illustrative and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  The above description includes the features described below.

[Appendix 1]
A relay device used in a predetermined area,
A terminal device;
With a judgment unit,
The terminal device transmits a name resolution request for the relay device, receives a name resolution response to the name resolution request, and transmits notification information addressed to the address of the relay device indicated by the received name resolution response. ,
The determination unit performs a determination process of determining whether the terminal device is present in the predetermined area based on a reception result of the notification information,
The predetermined area is inside a house,
The relay device is a broadband router,
The terminal device is a wireless terminal device,
The wireless terminal device is a mobile phone or a smartphone,
The wireless terminal device can perform wireless communication with an access point according to Wi-Fi and Bluetooth communication standards,
The wireless terminal device can perform wireless communication with a base station according to 3G and LTE (Long Term Evolution) communication standards,
The wireless terminal device transmits the name resolution request of the relay device via the access point or the base station, receives the name resolution response to the name resolution request, and indicates the received name resolution response. A communication system for transmitting the notification information addressed to the address of the relay device.

[Appendix 2]
An internal network in a predetermined area, and a relay device for relaying communication between external networks outside the predetermined area,
A terminal device;
With a judgment unit,
The terminal device transmits a name resolution request of the relay device, receives a name resolution response to the name resolution request,
The determination unit performs a determination process of determining whether the terminal device is present in the predetermined area based on an address of the relay device indicated by the name resolution response,
The predetermined area is inside a house,
The internal network and the external network are a LAN (Local Area Network) and the Internet, respectively.
The relay device is a broadband router,
The terminal device is a wireless terminal device,
The wireless terminal device is a mobile phone or a smartphone,
The wireless terminal device can perform wireless communication with an access point according to Wi-Fi and Bluetooth communication standards,
The wireless terminal device can perform wireless communication with a base station according to 3G and LTE (Long Term Evolution) communication standards,
The wireless terminal device, when the name resolution request is transmitted via the access point and the internal network, receives the name resolution response indicating the LAN address, which is the address of the relay device on the internal network side. ,
The wireless terminal device may further include, when the name resolution request is transmitted via the access point or the base station, and the external network, the name indicating the Internet-side address that is the address of the relay device on the external network side. Receiving a resolution response,
When the address indicated by the name resolution response is the LAN-side address, the determination unit determines that the terminal device is present in the predetermined area as the determination process,
The communication system, wherein, when the address indicated by the name resolution response is the Internet-side address, the determination unit determines that the terminal device does not exist in the predetermined area as the determination process.

[Appendix 3]
A relay device used in a predetermined area,
A receiving unit that receives notification information addressed to the address of the relay device from a terminal device,
A determination unit that performs a determination process of determining whether the terminal device is present in the predetermined area based on a reception result of the notification information by the reception unit,
The predetermined area is inside a house,
The relay device is a broadband router,
The terminal device is a wireless terminal device,
The wireless terminal device is a mobile phone or a smartphone,
The wireless terminal device can perform wireless communication with an access point according to Wi-Fi and Bluetooth communication standards,
The wireless terminal device can perform wireless communication with a base station according to 3G and LTE (Long Term Evolution) communication standards,
The relay device, wherein the receiving unit receives the notification information addressed to the address of the relay device from the wireless terminal device via the access point or the base station.

21 LAN side port 22 LAN side communication unit (receiving unit)
23 processing unit 24 WAN side communication unit (receiving unit)
Reference Signs List 25 judgment unit 26 WAN side port 41 acquisition unit 42 wireless communication unit 43 processing unit 45 judgment unit 101, 102 relay device 111 in-home device 112 monitoring device 113 monitoring device 150, 151 access point 161 DNS server 171 base station 202, 203 wireless terminal Device 301, 302 Communication system

Claims (11)

A relay device used in a predetermined area,
A terminal device;
With a judgment unit,
The relay device includes the determination unit,
The terminal device transmits a name resolution request of the relay device, receives a name resolution response to the name resolution request, and relays notification information addressed to the address of the relay device indicated by the received name resolution response. To the device,
The determining unit determines a transmission path of the notification information based on a reception result of the notification information in the relay device , and determines whether the terminal device is in the predetermined area based on the determination result. cormorants line the determination processing, communication system. The relay device relays communication between an internal network in the predetermined area, and an external network outside the predetermined area,
The communication system according to claim 1, wherein the determination unit determines a transmission path of the notification information further based on a source address of the notification information .   The communication system according to claim 1, wherein the relay device notifies the terminal device of a result of the determination processing. An internal network in a predetermined area, and a relay device for relaying communication between external networks outside the predetermined area,
A terminal device;
With a judgment unit,
The terminal device transmits a name resolution request of the relay device, receives a name resolution response to the name resolution request,
The determination unit performs a determination process of determining whether the terminal device is present in the predetermined area based on an address of the relay device indicated by the name resolution response,
The terminal device includes an acquisition unit that acquires mode information indicating whether an operation mode for communication connection with the relay device has been selected,
The determination unit is based on the mode information acquired by the acquisition unit, to determine the accuracy of the result of the determination processing, the communication system. The relay device relays communication between an internal network in the predetermined area, and an external network outside the predetermined area,
The relay device, when receiving the name resolution request from the terminal device, transmits the name resolution response indicating its own address in the internal network to the terminal device,
5. The terminal device according to claim 1, wherein, when transmitting the name resolution request to a device other than the relay device, the terminal device receives the name resolution response indicating an address of the relay device in the external network. 6. 2. The communication system according to claim 1.   The communication system according to claim 4, wherein the terminal device includes the determination unit, and notifies the relay device of a result of the determination process.   7. The terminal device according to claim 1, wherein the terminal device starts a predetermined process to be performed in the predetermined area when the terminal device determines that the terminal device is present in the predetermined area. 8. Communications system. A relay device used in a predetermined area,
A receiving unit that receives notification information addressed to the address of the relay device from a terminal device,
Judgment for performing a judgment process of judging a transmission route of the notification information based on a reception result of the notification information by the receiving unit and judging whether the terminal device is present in the predetermined area based on the judgment result. Ru and a section, a relay device. A relay device used in a predetermined area, a terminal device, a communication control method in a communication system including a determination unit,
The relay device includes the determination unit,
The terminal device transmits a name resolution request of the relay device,
The terminal device receives a name resolution response to the name resolution request,
The terminal device transmits to the relay device notification information addressed to the address of the relay device indicated by the received name resolution response,
The determination unit determines a transmission path of the notification information based on a reception result of the notification information in the relay device , and determines whether the terminal device is in the predetermined area based on a determination result. including the step of performing determination processing, the communication control method. An internal network in a predetermined area, and a relay device that relays communication between external networks outside the predetermined area, a terminal device, and a communication control method in a communication system including a determination unit,
The terminal device transmits a name resolution request of the relay device,
The terminal device receives a name resolution response to the name resolution request,
The determining unit performs a determination process of determining whether the terminal device is present in the predetermined area based on an address of the relay device indicated by the name resolution response,
The terminal device comprises: acquiring mode information indicating whether an operation mode for communication connection with the relay device is selected,
Wherein in the determination process performs steps, based on the acquired said mode information to determine the accuracy of the result of the determination processing, the communication control method. A communication control program used in a relay device used in a predetermined area,
On the computer,
Receiving notification information addressed to the address of the relay device from a terminal device;
Determining a transmission path of the notification information based on the reception result of the notification information, and performing a determination process of determining whether the terminal device is present in the predetermined area based on the determination result . for, communication control program.

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