JP4912161B2 - Coaxial line communication device automatic setting method, gateway, master coaxial line communication apparatus, and program - Google Patents

Description

  The present invention relates to an automatic setting method for a coaxial line communication device, a gateway, a master coaxial line communication device, and a program.

  In recent years, with the spread of personal computers and information home appliances, home networks are often built in the home. Conventionally, in order to construct a high-speed home LAN (Local Area Network), it is necessary to wire an Ethernet (registered trademark) cable indoors. On the other hand, according to the wireless LAN, although it is not necessary to wire a cable, strong encryption processing is necessary from the viewpoint of ensuring security, and the communication speed is inevitably low. On the other hand, the introduction of in-house power line communication (hereinafter referred to as “PLC”) that does not require new wiring and can reduce the processing load for ensuring security has begun.

  FIG. 1 is a system configuration diagram of a PLC in the prior art.

  According to FIG. 1, a plurality of PLC modems are connected to a power line outlet already wired in the user's home. The parent PLC modem is connected to a home gateway, and the home gateway is connected to the Internet via an optical fiber, for example. On the other hand, the child PLC modem is connected to a personal computer or information home appliance in the user's home. Thereby, information household appliances etc. can communicate with a home gateway via a power line, and can connect to the Internet.

  Here, in the case of an apartment house, the power line is shared and connected to different user's houses via a distribution board. Therefore, there is a possibility that the communication content in one user's home leaks into the other user's home. In order to ensure the security of information in the user's home, it is necessary to set a common network identifier (hereinafter referred to as “network ID”) that is different for each user home in the PLC modem in advance (for example, Non-Patent Documents 1 to 4). reference).

  For such a PLC, there is a technology called HPNA (Home Phoneline Networking Alliance). According to this technology, communication can be performed between HPNA modems via a coaxial line (or telephone line) to which an existing television is connected. High-speed data communication is realized without affecting existing signals such as television signals.

Takahito Yoshihara, Hironori Horiuchi, “Proposal of Network Identifier Automatic Setting Procedure for Home Power Line Communication”, B-7-50, IEICE General Conference, 2006 Takahito Yoshihara, Ken Kamiyama, Hironobu Higashi, Hironori Horiuchi, “Implementation and Evaluation of Home Communication Equipment Automatic Setting System by Server Cooperation”, B-7-39, IEICE / Communications Society Conference, 2004 Yoshihara Takahito, Kamiyama Ken, Nishikawa Masayuki, Horiuchi Hironori, "Proposal of Automatic Configuration Method for Home Communication Devices Using Server Cooperation", IEICE Technical, NS2004-96, IN2004-55, CS2004-51 (2004-09) Takahito Yoshihara, Ken Kamiyama, Hironobu Higashi, Hironori Horiuchi, "Automatic configuration of home communication equipment by server cooperation", IEICE Transactions B, Vol.J88-B No.3, pp.509-520, Electronic Information Communication Academic Society, 2005

  In the case of a PLC, there can be a plurality of parent PLC modems and child PLC modems on one power line. Therefore, it is possible to ensure security in which a network identifier is set between the parent PLC modem and the child PLC modem for each user.

  On the other hand, in the case of HPNA, only one master HPNA modem can exist on one coaxial line. For example, there is an apartment house that distributes a television signal received by one television antenna (broadcast antenna) to a plurality of user premises. In the case of such an apartment house, one master HPNA modem and a plurality of end HPNA modems in different user premises are connected by a single coaxial line. Therefore, in order to ensure the security of information for each user's home, the PLC security technology cannot be used as it is.

  In addition, if such a security setting is manually performed by the user for the end HPNA modem, the installation of the modem is prevented smoothly.

  Therefore, the present invention ensures the security of communication information for each user when one master HPNA modem communicates with an end HPNA modem for each user via a coaxial line shared by a plurality of users. An object of the present invention is to provide an automatic setting method of a coaxial line communication device, a gateway, a master coaxial line communication device, and a program.

According to the present invention, a management server storing user information including addresses of one or more end coaxial line communication devices for each user identifier, a gateway communicating with the management server via a network, and the gateway A method for automatically setting a coaxial line communication apparatus in a system having a connected master coaxial line communication apparatus and an end coaxial line communication apparatus communicating with the master coaxial line communication apparatus via a coaxial line,
A first step in which the gateway receives user information from the management server;
A second step of transmitting master setting information including user information to the master coaxial line communication device;
A third step in which the end coaxial line communication device transmits a registration request to the master coaxial line communication device;
A fourth step in which the master coaxial line communication device determines whether or not the user information includes the address of the end coaxial line communication device that transmitted the registration request;
If the determination is true, the master coaxial line communication device determines a security parameter for the end coaxial line communication device;
The master coaxial line communication device includes a sixth step of transmitting a registration response including a security parameter to the end coaxial line communication device.

According to another embodiment of the automatic setting method of the present invention, for the fourth step,
When the address of the end coaxial line communication device is included in the user information, sending a parameter request including the address to the gateway;
It is also preferable that the gateway has a step of transmitting a parameter response including a security parameter of the end coaxial line communication device to the master coaxial line communication device.

According to another embodiment of the automatic setting method of the present invention,
For the fifth step, the master coaxial line communication device transmits a security parameter assigned to each user identifier to the end coaxial line communication device,
It is also preferable that communication is possible between end coaxial line communication devices related to the same user identifier.

According to another embodiment of the automatic setting method of the present invention,
For the fifth step, the master coaxial line communication device transmits a security parameter assigned to each end coaxial line communication device,
For communication between end coaxial line communication devices related to the same user identifier, a frame transmitted from the first end coaxial line communication device reaches the gateway through the master coaxial line communication device, and the gateway Preferably, the destination address is changed, and the frame reaches the second end coaxial line communication apparatus through the master coaxial line communication apparatus.

  According to another embodiment of the automatic setting method of the present invention, the security parameter is preferably key information and / or communication quality information.

According to another embodiment of the automatic setting method of the present invention,
The master coaxial line communication device periodically broadcasts synchronization information,
When the master coaxial line communication device receives synchronization information from another master coaxial line communication device, the master coaxial line communication device may transmit a setting state response including abnormality detection information indicating the presence of a plurality of master coaxial line communication devices to the gateway. preferable.

According to the present invention, communication is performed via a network with a management server that stores user information including addresses of one or more end coaxial line communication apparatuses for each user identifier, and a plurality of end coaxial line communication apparatuses A gateway connected to a master coaxial line communication device that communicates via a coaxial line,
User information acquisition means for acquiring user information from the management server;
Master setting information transmitting means for transmitting master setting information including user information to the master coaxial line communication device;
A parameter transmission means for receiving a parameter request including an address from the master coaxial line communication device and returning a parameter response including a security parameter of the end coaxial line communication device to the master coaxial line communication device;
Parameter determining means for determining a security parameter.

According to another embodiment of the gateway of the present invention, for communication between end coaxial line communication devices related to the same user identifier,
To receive a frame transmitted from the first end coaxial line communication device from the master coaxial line communication device, change the destination address of the frame, and transmit the frame to the second end coaxial line communication device It is also preferable to further include a frame relay means for transmitting to the master coaxial line communication device.

  According to another embodiment of the gateway of the present invention, the security parameter is preferably key information and / or communication quality information.

According to the present invention, a plurality of end coaxials connected to a management server that stores user information including addresses of one or more end coaxial line communication devices for each user identifier and communicated via a network. A master coaxial line communication device that communicates with a line communication device via a coaxial line,
Master setting information receiving means for receiving master setting information including user information from the gateway;
Registration request receiving means for receiving a registration request from the end coaxial line communication device;
Determining means for determining whether or not the address of the end coaxial line communication device that transmitted the registration request is included in the user information;
Parameter determination means for determining a security parameter for the end coaxial line communication device when determined to be true by the determination means;
And a registration response transmission unit configured to transmit a registration response including a security parameter to the end coaxial line communication device.

According to another embodiment of the master coaxial line communication device of the present invention,
Preferably, the parameter determination unit transmits a parameter request including an address to the gateway when the determination unit determines to be true, and transmits a parameter response including the security parameter of the end coaxial communication device from the gateway.

According to another embodiment of the master coaxial line communication device of the present invention,
The parameter determination means assigns security parameters to each user identifier,
It is also preferable to enable communication between end coaxial line communication devices related to the same user identifier.

According to another embodiment of the master coaxial line communication device of the present invention,
The parameter determining means assigns a security parameter to each end coaxial line communication device,
For communication between end coaxial line communication devices related to the same user identifier, the frame is received from the first end coaxial line communication device, the frame is transmitted to the gateway, and the destination address is changed from the gateway. It is also preferable to further include frame transfer means for receiving the frame and transmitting the frame to the second end coaxial line communication device.

According to another embodiment of the master coaxial line communication device of the present invention,
Synchronization information transmission means for periodically transmitting synchronization information;
It further includes an abnormality detection means for transmitting a setting state response including abnormality detection information indicating the presence of a plurality of master coaxial line communication devices to the gateway when synchronization information is received from another master coaxial line communication device. preferable.

According to the present invention, communication is performed via a network with a management server that stores user information including addresses of one or more end coaxial line communication apparatuses for each user identifier, and a plurality of end coaxial line communication apparatuses A program for functioning a computer mounted on a gateway connected to a master coaxial line communication device that communicates via a coaxial line,
User information acquisition means for acquiring user information from the management server;
Master setting information transmitting means for transmitting master setting information including user information to the master coaxial line communication device;
A parameter transmission means for receiving a parameter request including an address from the master coaxial line communication device and returning a parameter response including a security parameter of the end coaxial line communication device to the master coaxial line communication device;
The computer is caused to function as parameter determining means for determining a security parameter.

According to the present invention, a plurality of end coaxials connected to a management server that stores user information including addresses of one or more end coaxial line communication devices for each user identifier and communicated via a network. A program for causing a computer mounted on a master coaxial line communication device to communicate with a line communication device via a coaxial line,
Master setting information receiving means for receiving master setting information including user information from the gateway;
Registration request receiving means for receiving a registration request from the end coaxial line communication device;
Determining means for determining whether or not the address of the end coaxial line communication device that transmitted the registration request is included in the user information;
Parameter determination means for determining a security parameter for the end coaxial line communication device when determined to be true by the determination means;
A computer is caused to function as a registration response transmission unit that transmits a registration response including a security parameter to an end coaxial line communication device.

  According to the gateway, the master coaxial line communication device and the program of the present invention, when one master HPNA modem communicates with an end HPNA modem for each user via a coaxial line shared by a plurality of users, Security of communication information for each user can be ensured.

  Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the drawings.

  FIG. 2 is a system configuration diagram of HPNA in the present invention.

  According to FIG. 2, one gateway 1 is installed in the apartment house. The gateway 1 is connected to the Internet by an optical fiber via an ONU (Optical Network Unit), for example, and can communicate with the user information management server 2.

  On the other hand, the gateway 1 is connected to a master HPNA modem (master HPNA communication apparatus) 3 via a high-speed communication cable (for example, Ethernet (registered trademark), USB (Universal Serial Bus), etc.) in the apartment house.

  In an apartment house, a coaxial line connected to one television antenna (broadcast antenna) is usually drawn into each user's house via a distributor. That is, a plurality of user homes share and use one coaxial line. Each user's house is provided with a coaxial cable plug. The user connects one of the coaxial lines wired in the room to the coaxial line plug and the other to the television.

  The master HPNA modem 3 is connected to the coaxial line in the shared facility portion of the apartment house. On the other hand, the user connects one or more end HPNA modems (end HPNA communication devices) 4 to a coaxial line wired in the house. The other interface of the end HPNA modem 4 is connected to a terminal device (personal computer, information home appliance, etc.) 5 having a communication function.

The end HPNA modem 4 transmits a registration request in order to start communication with the master HPNA modem 3. The master HPNA modem 3 determines the user identifier based on the MAC address of the end HPNA modem 4 included in the registration request, and sets the security parameter corresponding to the user identifier in the end HPNA modem 4. The present invention relates to ITU-T
G. The function of setting security parameters for the end HPNA modem 4 is expanded for the master HPNA modem conforming to the 9954 standard.

The user information management server 2 accumulates user information. User information is transmitted to the gateway 1. The user information is, for example, the following table, and at least the user identifier and the MAC address of the end HPNA modem are associated with each other.

  Since one coaxial line is shared by a plurality of users, it is important to determine a QoS setting policy from the viewpoint of quality control so that some users do not occupy network resources. . A QoS setting policy for each user identifier is set by the user information management server. The master HPNA modem can also dynamically change the QoS setting within the range of this QoS setting policy depending on the usage status of the coaxial line. Further, it may include firmware itself or version information thereof.

  The end HPNA modem 4 is an ITU-T G. It is an existing modem that conforms to the 9954 standard. Here, it is necessary to enable communication between end HPNA modems in the same user's home. Conversely, it is necessary to prevent communication with an end HPNA modem at another user's house. That is, according to the present invention, a grouping function of end HPNA modems can be provided for each user identifier.

  FIG. 3 is a sequence diagram in the present invention.

(S301) The gateway 1 transmits a login request to the user information management server 2. The user information management server 2 performs an authentication process using an identifier and a password included in the login request, for example. The user management server 2 returns a login response to the gateway 1 when permitting the gateway 1 to log in.

  Here, the user information management server 2 may transmit a setting start request to the gateway 1. In this case, the gateway 1 returns a setting start response to the user information management server 2 when permitting the setting start of the user information management server 1.

(S302) The master HPNA modem 3 periodically transmits synchronization information called “MAP (Media Access Plan)”. The end HPNA modem 4 detects the master HPNA modem 3 connected to the coaxial line by receiving the MAP.

(S303) The gateway 1 transmits a user information request to the user information management server 2.
(S304) On the other hand, the user information management server 2 transmits a user information response including the user information to the gateway 1. The user information is a table including addresses of one or more end HPNA modems for each user identifier.

(S305) The gateway 1 creates master setting information including user information. The master setting information includes setting parameters of the master HPNA modem 3. Then, the gateway 1 transmits the master setting information to the master coaxial line communication modem 3.

(S306) In order to start communication with the master HPNA modem 3, the end HPNA modem 4 transmits a registration request including a MAC address. Only one master HPNA modem 3 is connected to the coaxial line, and registration requests relating to all user identifiers are received by the master HPNA modem 3.

  The master HPNA modem 3 has already received master setting data including user information from the gateway 1. Here, the master HPNA modem 3 determines whether or not the address of the end HPNA modem 4 that transmitted the registration request is included in the user information. If this determination is true, the master HPNA modem 3 determines the security parameters for the end HPNA modem 4. The security parameter is key information and / or communication quality information. Here, the security parameter may be determined by the master HPNA modem 3 itself or inquired of the gateway 1 (S307 and S308).

(S307) When the address of the end HPNA modem is included in the user information, the master HPNA modem 3 transmits a parameter request to the gateway 1. The parameter request includes the MAC address of the end HPNA modem that sent the registration request.
(S308) On the other hand, the gateway 1 determines a security parameter to be set in the end HPNA modem 3. Then, the gateway 1 transmits a parameter response including security parameters to be set to the master HPNA modem 3.

(S309) The master HPNA modem 3 transmits a registration response to the end HPNA modem 4. The registration response includes a security parameter (and a device identifier).

(S310) As a result, by sharing the security parameters (key information and / or communication quality information) between the master HPNA modem 3 and the end HPNA modem 4, communication with security is established.

  Next, an abnormality detection sequence in the coaxial line network will be described. According to HPNA, only one master HPNA modem can be connected to the coaxial network. If a plurality of master HPNA modems exist in the coaxial line network due to incorrect settings or incorrect settings, communication is hindered. Therefore, it is necessary to monitor so that a plurality of master HPNA modems are not connected.

  The master HPNA modem 3 periodically broadcasts MAP. Therefore, when the master HPNA modem 3 receives a MAP from another master HPNA modem, it can be detected that a plurality of master HPNA modems are connected to the coaxial line network. A master HPNA modem that has received a MAP from another master HPNA modem holds the MAP information.

(S 311) The gateway 1 transmits a setting state request to the master HPNA modem 3.
(S312) On the other hand, the master HPNA modem 3 returns a setting state response to the gateway 1. When the master HPNA modem 3 receives a MAP from another master HPNA modem, the master HPNA modem 3 includes abnormality detection information indicating the presence of a plurality of master HPNA modems in the setting state response.
(S313) When the gateway 1 receives the setting state response including the abnormality detection information from the master HPNA modem 3, the gateway 1 transmits an abnormality detection notification to the user information management server 2. Thereby, it is possible to notify the network administrator of an abnormality in the coaxial line network.

  FIG. 4 is a sequence diagram of data frames.

  FIG. 4 shows a case where a security parameter is assigned for each user identifier and a case where a security parameter is assigned for each end HPNA modem 4. When a security parameter is assigned for each user identifier, communication can be performed between the end HPNA modems 4 in the same user's house using one security parameter. On the other hand, when a security parameter (randomly different) is assigned to each end HPNA modem 4, that is, even if the end HPNA modem is in the same user's house, the security parameters are different, so communication is performed directly. I can't. Therefore, the gateway 1 has a frame relay function for all frames.

  For communication between end HPNA modems associated with the same user identifier, a frame transmitted from the first end HPNA modem reaches the gateway 1 through the master HPNA modem 3, and the gateway 1 receives the destination address of the frame. And the frame reaches the second end HPNA modem through the master HPNA modem 3.

  FIG. 5 is a functional configuration diagram of the gateway and the master HPNA modem according to the present invention.

  The gateway 1 includes a user information acquisition unit 101, a master setting information transmission unit 102, a parameter transmission unit 103, a parameter determination unit 104, a frame relay unit 105, a network state monitoring unit 106, and an abnormality detection notification unit 107. And have. These functional units can also be realized by executing a program that causes a computer mounted on the gateway 1 to function.

  The user information acquisition unit 101 acquires user information from the user information management server 2. As a sequence, the user information acquisition unit 101 transmits a user information request to the user information management server 2. In response to this, the user information management server 2 returns a user information response including the user information.

  The master setting information transmitting unit 102 transmits master setting information including user information to the master HPNA modem.

  The parameter transmission unit 103 receives a parameter request including an address from the master HPNA modem 3, and returns a parameter response including the security parameter of the end HPNA modem to the master HPNA modem.

  The parameter determination unit 104 determines the security parameter of the end HPNA modem for the parameter transmission unit 103. The security parameter may be set to a different parameter for each user identifier, or may be set to a different parameter for each end HPNA modem.

  The frame relay unit 105 receives a frame transmitted from the first end HPNA modem for communication between the end HPNA modems related to the same user identifier, changes the destination address of the frame, Send the frame to the master HPNA modem for transmission to the second end HPNA modem.

  The network state monitoring unit 106 transmits a setting state request to the master HPNA modem 3 and receives a setting state response.

  The abnormality detection notification unit 107 transmits an abnormality detection notification to the user information management server 2 when abnormality detection information is included in the setting state response. Thereby, it is possible to notify the network administrator of abnormality detection.

  Next, the functional configuration of the master HPNA modem 3 will be described.

  The master HPNA modem 3 includes a master setting information reception unit 301, a registration request reception unit 302, a determination unit 303, a parameter determination unit 304, a registration response transmission unit 305, a frame transfer unit 306, and a synchronization information transmission unit 307. And an abnormality detection unit 308. These functional units can also be realized by executing a program for causing a computer mounted on the master HPNA modem to function.

  The master setting information receiving unit 301 receives master setting information including user information from the gateway 1. The user information is notified to the determination unit 303.

  The registration request receiving unit 302 receives a registration request from the end HPNA modem 4. The determination unit 303 is notified of the MAC address included in the registration request.

  The determination unit 303 determines whether or not the MAC information of the end HPNA modem 4 that transmitted the registration request is included in the user information.

  The parameter determination unit 304 determines the security parameter for the end HPNA modem when the determination unit 303 determines true. Here, the parameter determination unit 304 itself may determine the security parameter, or may inquire the gateway 1 about the security parameter. In this case, the parameter determination unit 304 transmits a parameter request to the gateway 1 and receives a parameter response including a security parameter.

  The registration response transmission unit 305 transmits a registration response including the security parameter determined by the parameter determination unit 304 to the end HPNA modem.

  When the security parameter is assigned for each user identifier, the same security parameter (key information and / or communication quality information) is set in the end HPNA modems related to the same user identifier. That is, communication between the end HPNA modems related to the same user identifier can be performed with one key information.

  The frame transfer unit 306 is executed when a security parameter is assigned to each end HPNA modem. The frame transfer unit 306 receives a frame from the first end HPNA modem for communication between the end HPNA modems related to the same user identifier, transmits the frame to the gateway, and the destination address is changed from the gateway. Received frame and transmits the frame to the second end HPNA modem.

  The synchronization information transmission unit 307 periodically transmits synchronization information.

  When the abnormality detection unit 308 receives synchronization information from another master HPNA modem, the abnormality detection unit 308 transmits a setting state response including abnormality detection information indicating the presence of a plurality of master HPNA modems to the gateway 1.

  As described above in detail, according to the gateway, the master coaxial line communication device, and the program of the present invention, one master HPNA modem and an end for each user are transmitted via a coaxial line shared by a plurality of users. When communicating with the HPNA modem, security of communication information for each user can be ensured.

  According to the various embodiments of the present invention described above, those skilled in the art can easily make various changes, modifications and omissions within the scope of the technical idea and the viewpoint of the present invention. The above description is merely an example, and is not intended to be restrictive. The invention is limited only as defined in the following claims and the equivalents thereto.

It is a system configuration | structure figure of PLC in a prior art. It is a system configuration | structure figure of HPNA in this invention. It is a sequence diagram in the present invention. It is a sequence diagram of a data frame. It is a functional block diagram of the gateway and master HPNA modem in this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Gateway 101 User information acquisition part 102 Master setting information transmission part 103 Parameter transmission part 104 Parameter determination part 105 Frame relay part 106 Network state monitoring part 107 Abnormality detection notification part 2 User information management server, management server 3 Master HPNA modem, Master Coaxial Line Communication Device 301 Master Setting Information Receiving Unit 302 Registration Request Receiving Unit 303 Determination Unit 304 Parameter Determination Unit 305 Registration Response Transmitting Unit 306 Frame Transfer Unit 307 Synchronization Information Transmitting Unit 308 Abnormality Detection Unit 4 End HPNA Modem, End Coaxial Line Communication Equipment 5 Terminal equipment 6 TV antenna, broadcast antenna

Claims (16)

A management server storing user information including addresses of one or more end coaxial line communication devices for each user identifier, a gateway communicating with the management server via a network, and a master coaxial line connected to the gateway A method for automatically setting a coaxial line communication apparatus in a system having a communication apparatus and an end coaxial line communication apparatus that communicates with the master coaxial line communication apparatus via a coaxial line,
A first step in which the gateway receives the user information from the management server;
A second step of transmitting master setting information including the user information to the master coaxial line communication device;
A third step in which the end coaxial line communication device transmits a registration request to the master coaxial line communication device;
A fourth step in which the master coaxial line communication device determines whether the user information includes an address of the end coaxial line communication device that transmitted the registration request;
If the determination is true, the master coaxial line communication device determines a security parameter for the end coaxial line communication device;
The master coaxial line communication apparatus includes a sixth step of transmitting a registration response including a security parameter to the end coaxial line communication apparatus, and a method for automatically setting the coaxial line communication apparatus. For the fourth step,
When the address of the end coaxial line communication device is included in the user information, sending a parameter request including the address to the gateway;
The automatic setting of the coaxial line communication apparatus according to claim 1, wherein the gateway includes a step of transmitting a parameter response including a security parameter of the end coaxial line communication apparatus to the master coaxial line communication apparatus. Method. For the fifth step, the master coaxial line communication device transmits a security parameter assigned to each user identifier to the end coaxial line communication device,
The automatic setting method for a coaxial line communication apparatus according to claim 1 or 2, wherein communication is possible between the end coaxial line communication apparatuses related to the same user identifier. For the fifth step, the master coaxial line communication device transmits a security parameter assigned to each end coaxial line communication device,
For communication between the end coaxial line communication devices related to the same user identifier, a frame transmitted from the first end coaxial line communication device reaches the gateway through the master coaxial line communication device, and the gateway 3. The coaxial line according to claim 1, wherein the destination address of the frame is changed, and the frame reaches the second end coaxial line communication apparatus through the master coaxial line communication apparatus. Automatic setting method of communication device.   5. The coaxial line communication apparatus automatic setting method according to claim 1, wherein the security parameter is key information and / or communication quality information. 6. The master coaxial line communication device periodically transmits synchronization information,
When the master coaxial line communication device receives synchronization information from another master coaxial line communication device, the master coaxial line communication device transmits a setting state response including abnormality detection information indicating the presence of a plurality of master coaxial line communication devices to the gateway. 6. The automatic setting method for a coaxial line communication apparatus according to claim 1, wherein the coaxial line communication apparatus is automatically set. Communicates via a network with a management server that stores user information including addresses of one or more end coaxial line communication devices for each user identifier, and communicates with a plurality of end coaxial line communication devices via a coaxial line A gateway connected to the master coaxial line communication device,
User information acquisition means for acquiring the user information from the management server;
Master setting information transmitting means for transmitting master setting information including the user information to the master coaxial line communication device;
Parameter transmitting means for receiving a parameter request including the address from the master coaxial line communication device and returning a parameter response including a security parameter of the end coaxial line communication device to the master coaxial line communication device;
And a parameter determining means for determining the security parameter. For communication between the end coaxial line communication devices related to the same user identifier,
To receive the frame transmitted from the first end coaxial line communication apparatus from the master coaxial line communication apparatus, change the destination address of the frame, and transmit the frame to the second end coaxial line communication apparatus 8. The gateway according to claim 7, further comprising frame relay means for transmitting to the master coaxial line communication device.   The gateway according to claim 7 or 8, wherein the security parameter is key information and / or communication quality information. Connected to a gateway that communicates via a network with a management server that stores user information including addresses of one or more end coaxial line communication devices for each user identifier, and a plurality of end coaxial line communication devices and coaxial lines A master coaxial line communication device that communicates via
Master setting information receiving means for receiving master setting information including the user information from the gateway;
Registration request receiving means for receiving a registration request from the end coaxial line communication device;
A determination unit that determines whether the address of the end coaxial line communication device that transmitted the registration request is included in the user information;
Parameter determination means for determining a security parameter for the end coaxial line communication device when determined to be true by the determination means;
A master coaxial line communication apparatus comprising: a registration response transmission unit configured to transmit a registration response including the security parameter to the end coaxial line communication apparatus.   The parameter determination unit transmits a parameter request including the address to the gateway when the determination unit determines to be true, and sends a parameter response including the security parameter of the end coaxial line communication device from the gateway. The master coaxial line communication device according to claim 10, wherein transmission is performed. The parameter determining means assigns the security parameter for each user identifier,
The master coaxial line communication apparatus according to claim 10 or 11, wherein communication is possible between the end coaxial line communication apparatuses related to the same user identifier. The parameter determining means assigns the security parameter to each end coaxial line communication device,
For communication between the end coaxial line communication devices related to the same user identifier, a frame is received from the first end coaxial line communication device, the frame is transmitted to the gateway, and the destination address is changed from the gateway. The master coaxial line communication apparatus according to claim 10 or 11, further comprising a frame transfer means for receiving the received frame and transmitting the frame to a second end coaxial line communication apparatus. Synchronization information transmission means for periodically transmitting synchronization information;
An abnormality detection means for transmitting a setting state response including abnormality detection information indicating the presence of a plurality of master coaxial line communication devices to the gateway when synchronization information is received from another master coaxial line communication device; The master coaxial line communication device according to claim 10, wherein: Communicates via a network with a management server that stores user information including addresses of one or more end coaxial line communication devices for each user identifier, and communicates with a plurality of end coaxial line communication devices via a coaxial line A program for causing a computer mounted on a gateway connected to a master coaxial line communication device to function,
User information acquisition means for acquiring the user information from the management server;
Master setting information transmitting means for transmitting master setting information including the user information to the master coaxial line communication device;
Parameter transmitting means for receiving a parameter request including the address from the master coaxial line communication device and returning a parameter response including a security parameter of the end coaxial line communication device to the master coaxial line communication device;
A program for a gateway, which causes a computer to function as parameter determination means for determining the security parameter. Connected to a gateway that communicates via a network with a management server that stores user information including addresses of one or more end coaxial line communication devices for each user identifier, and a plurality of end coaxial line communication devices and coaxial lines A program that causes a computer mounted on a master coaxial line communication device to communicate via
Master setting information receiving means for receiving master setting information including the user information from the gateway;
Registration request receiving means for receiving a registration request from the end coaxial line communication device;
A determination unit that determines whether the address of the end coaxial line communication device that transmitted the registration request is included in the user information;
Parameter determination means for determining a security parameter for the end coaxial line communication device when determined to be true by the determination means;
A program for a master coaxial line communication apparatus that causes a computer to function as a registration response transmission unit that transmits a registration response including the security parameter to the end coaxial line communication apparatus.

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