KR20140129943A - Federated trust center apparatus and network management system - Google Patents

Abstract

According to an aspect of the present invention, a union certification center apparatus comprises: a control unit which controls an operation of a union certification center; and at least one communications module which transmits/receives data based on a command of the control unit. The control unit which receives an access request message from a smart home appliance, transmits an access response message corresponding to the access request, receives a pairing request message containing own device information from the smart home appliance, allocates a virtual home area network to which the smart home appliance belongs based on the pairing request message, and transmits a pairing response message corresponding to the pairing request message.

Description

[0001] FEDERATED TRUST CENTER APPARATUS AND NETWORK MANAGEMENT SYSTEM [0002]

Various embodiments of the present disclosure generally relate to network access in a multi-home area network environment, and more particularly, in a case where a plurality of home area networks operate in a physically adjacent space, And to a method, apparatus, and system for performing a pairing with other apparatuses in a network to which the apparatus is connected.

IT technologies such as the Internet and high-speed communication have been making remarkable progress in recent years. With the changing perception of environmental issues and high social interest in eco-friendly technologies, interest in smart grid technology, which is a combination of IT and electric power industry, is increasing. The Smart Grid is a technology that utilizes energy efficiently by minimizing environmental pollution by implementing a stable, highly efficient, and intelligent power network through the convergence of IT and power technologies. The Smart Grid is a next-generation intelligent power grid that combines information technology with existing power grids to enable electric power providers and consumers to exchange information in real time in both directions, minimizing unnecessary power generation and increasing the efficiency of power use.

In the Smart Grid system, power generation facilities include traditional large power plants such as thermal power generation, hydropower generation, and nuclear power generation, and solar and wind power solar and wind power plants, which are renewed energy sources. The large power plants send power to the transmission station through the transmission line, and electricity is sent to the substation at the transmission station so that electricity is distributed to final consumers such as the home or the office. Electricity generated from large-scale renewable power generation complexes is also sent to the substation to be distributed to each customer.

In the Smart Grid, many devices that operate by electricity are connected to the IT network and information exchange is used to efficiently control supply and demand. The major problem with existing power networks is that unidirectional power supply and simple metering facilities do not know the power usage in the final customer (house, factory, commercial facility) in real time and can not optimize the power supply. In the smart grid environment, it is possible to collect the energy consumption used in real time through the Smart Meter, so that it is possible to control the power generation amount and to predict the future power consumption, so that the energy cost can be differentiated, .

In the home smart grid environment, information related to energy is exchanged through communication between appliances including smart meters. There are various methods of wired and wireless communication technology that can be used for the above purpose, but the technology that is installed in the most products to date is ZigBee technology. ZigBee, a low-rate wireless personal area network (LR-WPAN) technology, features low-power and low-cost, and is designed to meet the needs of personal wireless network standards for smart grid and home automation applications in the 2.4GHz frequency band. to be.

FIG. 1 shows each layer to which a ZigBee and IEEE 802.15.4 standards are applied.

The ZigBee communication method is a communication standard for short-range networking. The Medium Access Control (MAC) layer and the Physical (PHY) layer adopt the IEEE 802.15.4 standard. The network layer and the application layer form a standard in the ZigBee Alliance . The Zigbee communication method is one of the communication technologies that realize the ubiquitous computing by implementing the Internet of Things (IoT) by providing the short distance communication service of about several tens of meters in the environment of the home and the office. Especially, Zigbee communication method can minimize power consumption and can be mounted on various battery-based smart grid devices and household sensors.

Referring to the ZigBee standard, ZigBee is capable of using 2.4GHz, 915MHz, and 868MHz frequency bands, which are Industrial, Scientific and Medical (ISM) bands, and has a transmission rate of 250Kbps using 16 channels in the 2.4GHz band, It uses 10 channels in the 915MHz band and has a transmission rate of 40kbps. In the 868MHz band, it can have a transmission rate of 20kbps using one channel. In the physical layer, DSSS (Direct Secure Spread Spectrum) technology is used. To sum up, ZigBee technology can exchange data at a rate of 20 ~ 250kbps within a few tens of meters, connect up to 255 devices to a single PAN (Personal Area Network), and configure a large-scale wireless sensor network .

It is an object of the present invention to provide a method, apparatus and system for providing a network connection between a federated authentication center and a smart home appliance in a multi-homed area network environment.

According to an aspect of the present invention, there is provided a federated authentication center apparatus comprising: a control unit for controlling operation of the federated authentication center; And at least one communication module for transmitting / receiving data based on a command of the controller, wherein the controller receives the connection request message from the smart appliance, transmits a connection response message corresponding to the connection request A virtual home area network to which the smart home appliance belongs based on the pairing request message, a pairing response message corresponding to the pairing request message, And transmits the authentication result to the authentication center device.

According to another aspect of the present invention, there is provided a network management system in which a federated authentication center connects a smart home appliance to a network in a multi-home area network environment, the smart home appliance transmits a connection request message to the federated authentication center , The association authentication center transmits a connection response message corresponding to the connection request message to the smart home appliance, the smart home appliance transmits a pairing request message including its device information to the association authentication center, Wherein the center assigns a virtual home area network to which the smart home appliance belongs based on the pairing request message and the association center transmits a pairing response message corresponding to the pairing request message to the smart home appliance. System I will.

According to an embodiment of the present invention, a network connection between a federated authentication center and a smart home appliance is possible in a multi-home area network environment. In particular, according to the embodiment of the present invention, it is possible to connect a smart home appliance belonging to an arbitrary home area network to a network by utilizing a single federated authentication center in a multi-home area network environment in which a plurality of home area networks are physically adjacent .

FIG. 1 shows each layer to which a ZigBee and IEEE 802.15.4 standards are applied.
2 is a block diagram of a home network system of a smart grid according to an embodiment of the present invention.
3 is a block diagram schematically illustrating a home network device according to an embodiment of the present invention.
4 illustrates a communication frame structure defined by the ZigBee standard and the IEEE 802.15.4 standard according to an embodiment of the present invention.
5 illustrates a topology of a ZigBee wireless network according to an embodiment of the present invention.
FIG. 6 illustrates a relationship between a federated authentication center of a pairing cluster and a home area network device according to an embodiment of the present invention.
7 illustrates a multi-home area network structure according to an embodiment of the present invention.
Figure 8 illustrates the communication steps between a federated authentication center and a home area network appliance (e.g., a smart home appliance) in accordance with one embodiment of the present invention.
9 illustrates a data portion of a pairing response message according to an embodiment of the present invention.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to be illustrative of the present invention and not to limit the scope of the invention. Should be interpreted to include modifications or variations that do not depart from the spirit of the invention.

The terms and accompanying drawings used herein are for the purpose of facilitating the present invention and the shapes shown in the drawings are exaggerated for clarity of the present invention as necessary so that the present invention is not limited thereto And are not intended to be limited by the terms and drawings.

In the following description, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

2 is a block diagram of a home network system of a smart grid according to an embodiment of the present invention.

Referring to FIG. 2, the devices in the home area network are equipped with ZigBee, Wi-Fi, Bluetooth, PLC (Power Line Communication), and Ethernet modules, It can transmit and receive. Communication within the house can be done via the wireless or wireline. Preferably, each of the home area network devices is preferably capable of communicating with the HEMS server 101, and each home area network device is interconnected with other home area network devices so as to be communicable.

The home network device includes a temperature controller 107 connected to and controlling the smart home appliance 105, the in-home display 106 and the air conditioning system 107a, an electric car charger 108 for charging the electric car 108a, A battery inverter 109 connected to the household battery 109a for controlling charging and discharging, a battery operating device 103 operating as a battery, a data mirror device 104 for mirroring data of the battery operating device 103, A solar power inverter 120 for converting the direct current electricity generated from the solar power generator 120a into AC, a solar inverter 130 for converting the direct current electricity generated in the wind power generator 130a into AC, etc. It refers to various devices requiring energy control.

In the home smart grid, a home energy management system (HEMS) server 101 for real time real-time power management of the home and a real-time prediction of power consumption and a smart meter 102 for measuring power consumption in real time play a pivotal role I am responsible.

The home energy management system (HEMS) server 101 is a central device of the home energy management system. The home energy management system 101 is a home energy management system in which, in response to energy related information received from a HEMS management server 301 operated by a power additional service provider 300, Perform load control and energy usage control of internal devices. The HEMS server 101 may be a separate physical device or may be incorporated in the smart meter 102 or incorporated into a smart appliance 105 such as a TV. have. The HEMS management server 105 of the service provider performs functions of remotely managing and setting the HEMS server 101 of the customer.

The smart meter 102 is an electronic watt hour meter equipped with a communication function having a function of measuring the total usage amount of a home by time and transmitting it to an AMI server 201 operated by the utility company 200. It is possible to provide an LCD display unlike the conventional mechanical watt-hour meter, measure the power consumption in real time, and transmit the message in both directions to the power company and the user through the neighboring area network 204 and the home area network 100 communication function, respectively . Therefore, through the smart meter 102, the electric power company 200 and the user can achieve the effects of the reduction of the inspection cost and the energy cost savings through manpower.

The smart meter installed in the office or the home grasps the amount of real time electric power used in each customer and transmits it to the AMI server 201. On the contrary, the smart meter receives the real time electric charge, load control, Area network devices. Through this, the user can recognize the current amount of electric power and the electric charge, and can find a way to reduce the electric power consumption or electric charge according to the situation.

The Advanced Metering Infrastructure (AMI) system, which monitors the electricity consumption of customers in real time, is the core infrastructure of the smart grid. The AMI is a system capable of collecting energy usage in real time. The AMI is a smart meter (102) installed in each household for measuring the total power consumption, and an intermediate data collecting device (DCU A data collection unit 203 and finally an AMI server 201 for collecting data from a plurality of DCUs 203 through a large area network 202. [ The DCU 203 communicates with a plurality of adjacent smart meters 102 through a Neighborhood Area Network (NAN) and communicates with the AMI Server 50 through a large area network (WAN) do. The smart meter also communicates with home appliances in the home via a home area network (HAN) 100. The AMI server 201 manages the smart meter 102 as a server located in the network of the power company 200 and transmits the real time energy price information to the smart meter 102 or the real time energy consumption Lt; / RTI >

Electricity is supplied to the house through the solar inverter 120 or the wind inverter 130, which generates electricity through the solar power generator 120a or the wind power generator 130a in the home area network and converts the electricity into AC And the remaining electricity can be returned to the outside.

The IHD (In-Home Display) 106 is a device for displaying the real-time energy usage amount of the home. The IHD (In-Home Display) And other information.

The mobile device 110 is a portable device capable of wireless communication with home area network devices such as a smart phone and a computer.

In the customer, the HEMS server 101, the smart meter 102 and the home area network devices send and receive messages via an application standard protocol called energy profile for demand response. As an example of the above energy profile, there is a ZigBee SEP (Smart Energy Profile) energy profile. The SEP standard is based on SEP 1.x version which operates only in ZigBee communication technology, SEP 2 which can operate in any communication technology supporting IP There is a separate .x standard. The SEP can be standardized through the ZigBee Alliance and loaded into each home appliance including the smart meter 102 within the home area network area. However, there are variations of various energy profiles depending on functions or countries, and therefore, there may be devices supporting these various energy profiles.

3 is a block diagram schematically illustrating a home network device according to an embodiment of the present invention.

The device may be one of the devices in the home network 100 shown in FIG.

3, a device according to the present invention includes a ZigBee 101a, a wireless LAN 101b, a PLC 101c, a mobile communication module 101d, and a user input signal for bidirectional communication with home area network devices A display unit 101f for displaying power information received through the communication modules 101a, 101b, 101c, and 101d or information about the home network devices, Receives the setting information, the power information, or the information on the home network devices through the input unit 101e or the communication units 101a, 101b, 101c, and 101d, And a control unit 101h for controlling the operation.

The apparatus may include a memory unit 101g in which a control command or program for an electrical product is stored.

Preferably, the control unit 101h of the device may control the display unit 101f to graphically provide the user with the setting information, the power information, or the information about the electrical product.

The mobile communication module 101d enables the device to transmit and receive wireless signals to and from external devices in the mobile communication network.

The user input 101e section allows a command for controlling the apparatus to be input by the user.

The display 101f displays results and statuses according to the operation of the device, and can display information provided from the outside.

4 illustrates a communication frame structure defined by the ZigBee standard and the IEEE 802.15.4 standard according to an embodiment of the present invention.

ZigBee supports both slotted-mode and non-slotted-mode. In the slotted mode, all devices in the PAN synchronize using the beacon message of the PAN (Personal Area Network) coordinator. In non-slotted mode, the start of the frame is detected using the preamble signal. Slotted-mode has the advantage of increasing the network efficiency because it shares the synchronous signal, but it is not used due to the overhead of the synchronous signal in the actual network environment. The message frame structure is commonly defined for slotted-mode and non-slotted-mode.

The IEEE 802.15.4 standard specifies the PHY (physical) layer and the MAC (medium access control) layer, and the ZigBee Alliance specifies the NWK (Network) layer. There are 4 bytes of Preamble Sequence located at the beginning of the PHY Layer and 1 byte of Start of Frame Delimiter. The 5 bytes are called SHR (Synchronization Header). Followed by a 1-byte frame length to indicate the length of the subsequent PSDU (PHY Layer Service Data Unit). The PSDU is a data set including all the signals of the MAC layer and can be up to 127 bytes.

The MAC Layer starts with a 2-byte Frame Control and has a Sequence Number of 1 byte and Addressing Fields with a minimum of 4 bytes and a maximum of 20 bytes. The length of Addressing Fields will vary depending on whether you want to use short addresses in any PAN or longer IEEE Addresses. After that, the frame body carrying the NWK layer data comes along and finally the frame check sequence (FCS) is used to detect the frame error. The data payload is also called the MAC layer Service Data Unit (MSDU). If the PSDU of the PHY layer is a maximum of 127 bytes, the MAC header 7 bytes and the FCS 2 bytes are excluded, so that the length of the MSDU is maximum 118 bytes.

Necessary items in NWK Header are 2 bytes of Frame Control, 2 bytes of Destination Address, 2 bytes of Source Address, 1 byte of Radius, 1 byte of Sequence Number. If the MSDU is up to 118 bytes, the maximum payload available in the NWK layer is 110 bytes minus the NWK Header 8 bytes.

5 illustrates a topology of a ZigBee wireless network according to an embodiment of the present invention.

The ZigBee standard defines three network topologies: Star, Tree, and Mesh. The ZigBee standard defines three types of network nodes.

The coordinator acts as the center of the network and manages the information of all devices connected to the network. Only the FFD (Full Function Device) defined in IEEE 802.15.4 can operate as a coordinator.

Routers are not in a star topology, and can only be applied to tree topologies and mesh topologies. The router is responsible for connecting the coordinator and the end device, and it only consists of FFD. The router itself may also act as an end device, in which case the name is a router, but it is treated the same as an end device.

The end device constitutes the end node of the network and collects and transmits sensor data or performs a control function by receiving a command from the coordinator. The termination device is generally composed of RFD (Reduced Function Device) defined in the IEEE 802.15.4 standard. RFD uses less memory compared to FFD to lower the price and reduce power consumption.

The star topology is the simplest to implement, with the ZigBee coordinator at the center and the end devices directly behind it. In order to transmit data from the end device to the end device, two steps are required to be transmitted through the coordinator because the coordinator must pass through the coordinator, so inefficiency occurs when the neighboring nodes communicate with each other.

The mesh topology increases the size of the network, with the coordinator at the center, under which end devices or routers are connected, other routers are connected beneath the router, and end devices are directly connected. The difference from tree topology is that each node can have multiple parent nodes rather than having one parent node. Mesh topology has a disadvantage of consuming a lot of memory because network configuration is complicated and each router needs to have information about all nodes. However, even if one node is lost, the bypass path can be secured immediately, thereby improving the network stability and reducing the total traffic since the data can be directly transmitted through the shortest path without going through the coordinator.

The tree topology is a topology in which the coordinator is at the center, the end devices or routers are connected beneath it, the other routers are connected under the router, and the end devices are directly connected and the size of the network is increased. In a tree topology network, all data is concentrated in the coordinator, so the total traffic tends to increase.

FIG. 6 illustrates a relationship between a federated authentication center of a pairing cluster and a home area network device according to an embodiment of the present invention.

The federated authentication center operates as a server of the pairing cluster, and any home network device operates as a client.

7 illustrates a multi-home area network structure according to an embodiment of the present invention.

The case where the multi-home area network 100 exists at the physically same position may be as follows. The first case may be a case where the HEMS server 101 supplied by the electric power company and the HEMS server 101 provided by the electric power added service provider exist separately in a single household. The second case may be the case where at least one HEMS server 101 for a plurality of goods such as electric power, gas, and water is kept separately in a single household. The third case may be the case of an apartment environment in which a plurality of home area networks and smart meters belonging to them are superimposed on a physical space and exist at the same time. In this case, each of the home area networks 100 can communicate with each other through a neighboring area network. In the case of the third example, it is preferable that a plurality of home area networks are managed through a federated authentication center.

In this case, it is desirable to maintain a single authentication center, unlike the case where each authentication center (102 in FIG. 2) exists when each home domain network 100 is separately maintained, minimizing unnecessary user intervention for each home domain network . The single authentication center is referred to as the Federated Trust Center (FTC) and the federated authentication center will control the entire MDU network.

Referring to FIG. 7, there is shown a case where a plurality of furniture (one in FIG. Each household may include home area network 100 devices, including a HEMS server 101 and a smart home appliance 105.

However, in such a situation, the smart meter 102 for measuring the electric power consumption of each household may be installed in an easy-to-manage area such as a ground floor or a first floor for convenience of management. In this case, the HOMS server 101, the smart home appliance 105, and the remote smart meter 102 are combined with each other in the home area network 102 so that the virtual home area network Network) can be configured. In this case, it is desirable to arrange the communication distance extenders for each layer to maintain the communication connection for the connection between the remote devices.

When a multi-home area network is configured as described above, the types of devices operating in the network include a federation authentication center 205 for managing connection and pairing of all devices, a smart meter 102 belonging to each virtual home area network, A HEMS server 101 for managing individual home area networks, a smart home appliance 105 belonging to an individual home area network, and a neighboring area network 204 for connecting them by communication.

In the case of the HEMS server 102, the function may be combined with the smart meter 102 instead of being physically a separate device.

The multi-home area network may incorporate the following technologies.

It is desirable to physically cover the entire area with a single ZigBee network in which all devices of the multi-home area network can communicate. For this purpose, it is desirable to activate the routing function of each ZigBee device, not the end device, to help the whole building connect to the mesh network.

It is preferable that all devices of the multi-home area network use the same network security key and the connection of the network is managed by a single integrated authentication center 205. [ Devices belonging to any of the same home area network 100 perform a binding procedure through the integrated authentication center 205 and use the assigned application layer link key to transmit the other You can prevent devices from knowing the message content. Devices belonging to different home area networks 100 can route messages of other home area network 100 devices but do not have a security key for decrypting the corresponding messages.

Each of the home area networks 100 can operate as a plurality of virtual home area networks in the multi-home area network by logically dividing the network using the security key. Each virtual home area network includes a HEMS server 101 and a corresponding smart meter 102 remotely from home area network 100 devices such as smart home appliance 105. In a multi-home area network environment, a virtual home area network is formed between devices existing in a specific home area network 100. At this time, the subjects constituting the single virtual home area network will be the smart meter 102, HEMS server 101 and smart home appliances 105 of the household.

It is desirable that a home network appliance newly accessing an arbitrary home area network 100 does not use a service discovery scheme in a conventional single network. When using the existing service discovery scheme, a corresponding message may be delivered to be delivered to the neighboring home area network 100. In order to prevent this, it is desirable that the federated authentication center 205 send a list of which devices can communicate with the new connected device.

The federated authentication center 205 obtains the list information of the devices constituting the virtual home area network for each household. The information may be received from the AMI server 201 operated by the electric power company. It is desirable that a device newly joining a multi-home operation network is given information on a virtual home area network to which the device is to be assigned. This makes it possible to efficiently perform service discovery in a new network. That is, the service discovery of an arbitrary new device should be limited to a virtual home area network to which the device belongs.

When an arbitrary new device enters a neighboring area network managed by a single federated authentication center 205, it is first required to perform a successful security key exchange with the federated authentication center.

After that, the new device should request the pairing information from the Alliance Authentication Center 205. When the new device receives the pairing information from the Alliance Authentication Center 205, the new device can restrict service discovery to only the devices listed in the pairing message. That is, the pairing response message received from the federated authentication center may include a device list of the virtual home area network to which the new node belongs. Therefore, it is preferable that the corresponding service discovery message is transmitted by a unicast or multicast command instead of a broadcast.

Devices may leave the virtual home area network or move to a neighboring virtual home area network. To this end, each device belonging to the neighboring area network 204 may inquire to the association authentication center 205 whether there is new pairing information. It is possible to determine the novelty of the received pairing information according to the pairing version information indicated in the message

Figure 8 illustrates the communication steps between a federated authentication center and a home area network appliance (e.g., a smart home appliance) in accordance with one embodiment of the present invention.

In this example, the smart home appliance 105 is used as an example of the home network device. In addition to smart home appliances, other home networking devices such as HEMS servers, IHDs, temperature controllers, etc. can perform similar steps.

The smart appliance 105 transmits a connection request message to the federated authentication center 205 (S101). In this step, the smart appliance 105 and the federated authentication center 205 may perform authentication and key exchange. Thus, the smart home appliance 105 can acquire the network key (S105).

The smart home appliance 105 may transmit a pairing request message to the federated authentication center 205 for communication with other devices of the virtual home network to which the smart home appliance 105 belongs (S107).

The Alliance authentication center 205 may transmit a device information request to the AMI server to acquire information of the virtual home area network to which the smart home appliance 105 belongs (S109). The device information request may include the MAC address of the smart home appliance. The AMI server 201 may transmit a device information response message corresponding to the device information request to the federated authentication center 205. [ The device information response message may include information on a virtual home area network to which the smart appliance 105 belongs.

According to another embodiment of the present invention, in the above step, the federated authentication center 205 may use the virtual home area network information corresponding to the smart appliance 105 through the device database previously stored therein.

In another embodiment of the present invention, it is also possible that the smart home appliance 105 displays the information of the virtual home area network desired by the smart home appliance 105 in the pairing request message.

The Alliance authentication center 205 allocates the virtual home area network to which the smart home appliance 105 belongs (S113), and transmits the information including the corresponding information in the pair and response message (S115).

The pairing response message may include a list of other devices existing in the virtual home area network to which the smart home appliance 105 belongs.

The smart home appliance 105 may transmit a service discovery message in the form of unicast or multicast to the devices of the list. And the devices receiving the service discovery message may transmit a service response message corresponding to the service discovery message. Based on the information of the response message, the smart home appliance 105 and the services of the devices can perform binding.

If the device wants to change the virtual home area network to which the device belongs on the network, the following steps can be performed.

Transmitting a pairing request message to the federated authentication center, analyzing whether the federated authentication center is capable of changing the network of the virtual home area of the device, transmitting the included list of accessible devices in the pairing response message as a result of the analysis If the device list of the probe response message is the same as the previous one, the device does not perform a binding request; if the device list of the probe response message is different from the previous device, the device performs a new binding request .

9 illustrates a data portion of a pairing response message according to an embodiment of the present invention.

Referring to FIG. 9, the Pairing Information Version refers to the serial number of the pairing information included in the current message. If multiple pairing response messages for a pairing request are sent, they all preferably have the same serial number. Also, it is preferable to send a pairing response message including the same version information to all devices existing in the same virtual home area network at a certain time. If the new device successfully joins the virtual home area network, the version can be updated to a higher number.

The Total Number of Devices may indicate the total number of devices in the virtual home area network in which the device requesting connection requests a connection. Preferably, the total number of devices includes an apparatus that transmits the pairing request message. This field is incremented or decremented when the number of devices of the virtual home area network is changed.

The device ID indicates a MAC address of devices belonging to the virtual home network. At this time, as with the total number of devices field, it is preferable that the device ID includes the MAC address of the device that transmitted the pairing request.

Upon receipt of the pairing response message including the fields, the smart appliance 105 can perform a service discovery procedure with the address nodes of the device ID included in the pairing response message.

100: Home area network
101: HEMS server
102: Smart meter
105: Smart Appliances
201: AMI server
204: Neighbor area network
205: Union Certification Center

Claims (10)

As a federated authentication center device,
A control unit for controlling operation of the federated authentication center; And
And at least one communication module for transmitting / receiving data based on a command of the control unit,
Wherein,
Receives a connection request message from the smart home appliance, transmits a connection response message corresponding to the connection request,
Receiving a pairing request message including its device information from the smart home appliance,
Allocating a virtual home area network to which the smart home appliance belongs based on the pairing request message,
And transmits a pairing response message corresponding to the pairing request message.
The method according to claim 1,
Wherein the connection response message includes a network key of a multi-home area network.
The method according to claim 1,
And the information on the virtual home area network to which the smart home appliance belongs is included in the pairing request message.
The method according to claim 1,
And acquires the virtual home area network information of the smart home appliance from the AMI server using the device information of the smart home appliance obtained in the pairing request message.
The method according to claim 1,
And the list information of devices belonging to the virtual home network to which the smart home appliance belongs is included in the pairing response message.
1. A network management system in which a federated authentication center connects a smart home appliance to a network in a multi-
The smart home appliance transmits a connection request message to the federated authentication center,
The association authentication center transmits a connection response message corresponding to the connection request message to the smart appliance,
The smart home appliance transmits a pairing request message including its device information to the federated authentication center,
Wherein the association center assigns a virtual home area network to which the smart home appliance belongs based on the pairing request message,
And the association authentication center transmits a pairing response message corresponding to the pairing request message to the smart home appliance.
In the sixth aspect,
Wherein the connection response message includes a network key of a multi-home area network
In the sixth aspect,
And the information on the virtual home area network to which the smart home appliance belongs is included in the pairing request message.
In the sixth aspect,
And acquires the virtual home area network information of the smart home appliance from the AMI server using the device information of the smart home appliance obtained in the pairing request message.
In the sixth aspect,
And a list of devices belonging to a virtual home area network to which the smart home appliance belongs is included in the pairing response message.

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