KR102560548B1 - Access point, home gateway and home network system, and method for performing ip communication on the home network system - Google Patents

Abstract

An access point, a home gateway and a home network system, and a method for performing IP communication in the home network system are disclosed.
The home network system includes an access point, a home gateway, and a service server, wherein the access point controls the home gateway to be connected to an external network through a USB interface and perform IP communication, the home gateway connects the USB interface to the access point and performs IP communication with the service server connected to the external network, and the service server performs IP communication with the home gateway connected to the access point through a USB interface to perform device management and control of IoT devices connected to the home gateway, and the home gateway performs device management and control for IoT devices connected to the home gateway by the service server To control the IoT device, message transmission is performed between the service server and the IoT device.

Description

Access point, home gateway and home network system, and method for performing IP communication in the home network system

The present invention relates to an access point, a home gateway and a home network system, and a method for performing IP communication in the home network system.

Home network is a technology that controls major home appliances such as TVs and microwave ovens through wired and wireless communication networks and shares content between devices. Recently, in a situation where IoT (Internet of Things) devices are becoming popular, a home IoT service that enables control of IoT devices in the home through a home network has emerged as a major issue, and is provided as a more extended home network than before.

In such a home network, there is a home hub that issues commands to control home IoT devices operating respectively in the home, and the home hub serves as a home gateway. In the conventional home gateway, the home gateway has a command system capable of controlling each home IoT device, and it is firmware of the home gateway that maintains and manages this command system. Accordingly, the home gateway controls each home IoT device within its own command system and transmits the resultant value to the server, thereby enabling home IoT service through the home network.

However, in the case of a conventional home gateway, whenever new home IoT devices, particularly non-IP communication IoT devices are introduced, the home gateway manages and uses a command system to control them.

In addition, Z-WAVE gateways are recently used to connect Z-WAVE devices that use non-IP communication methods such as Z-WAVE to home networks. At this time, Z-WAVE gateways need to be connected to wired/wireless routers without additional equipment. Also, since the gateways use a separate power adapter to receive power, improvements are needed in these areas as well.

An object to be solved by the present invention is to provide an access point, a home gateway, and a home network system capable of IP communication through a USB interface, and a method for performing IP communication in the home network system.

An access point according to one feature of the present invention,

a broadband network interface connected to an external network; a USB interface providing a connection for USB communication with an external device; and a communication controller configured to connect an external device connected through the USB interface to an external network through the broadband network interface so that the external device can perform Internet Protocol (IP) communication.

Here, the access point further includes a power supply unit that receives power from the outside and uses it as internal power of the access point, and the power supply unit supplies power to the external device through the USB interface.

In addition, the communication control unit opens an Ethernet network port for the external device connected through the USB interface, and allocates an IP to the external device through Dynamic Host Configuration Protocol (DHCP) so that the external device can perform IP communication through the USB interface.

In addition, the communication controller enables the external device to perform IP communication through Ethernet communication (Ethernet over USB) in a USB driver layer.

A home gateway according to another feature of the present invention,

a USB interface providing a connection for USB communication with an external device; IoT interface that provides wired/wireless communication connection with IoT (Internet of Things) devices used for home network service; And a communication control unit that performs IP communication through an access point connected through the USB interface, is connected to an external network, and is connected to a service server that controls the IoT device for a home network service through the external network to perform message transfer between the service server and the IoT device.

The home gateway may further include a power supply unit supplying internal power to the home gateway, and the power supply unit receives power from the access point through the USB interface and uses the power as the internal power supply.

In addition, the communication control unit allocates an Ethernet communication port to the port of the USB interface, requests DHCP IP allocation to the access point through the USB interface, and then uses the DHCP IP allocated from the access point. Controls to perform IP communication with the service server through the access point.

In addition, the communication control unit performs IP communication with the access point through Ethernet communication (Ethernet over USB) in a USB driver layer.

In addition, the service server includes a management and control command system for the IoT device, and the communication control unit transmits a message transmitted from the service server to the IoT device as it is, and transmits a message transmitted from the IoT device to the service server as it is.

In addition, when the communication control unit transmits a message between the service server and the IoT device, an identifier field capable of distinguishing the IoT device and a control command of the service server are included in a packet header of a protocol with the service server and the result code field of the IoT device is included as an extension field and transmitted.

A home network system according to another feature of the present invention,

It includes an access point, a home gateway, and a service server, wherein the access point controls the home gateway to be connected to an external network through a USB interface and perform IP communication, the home gateway is connected to the USB interface to the access point to perform IP communication with the service server connected to the external network, the service server performs IP communication with the home gateway connected to the access point through a USB interface to perform device management and control of IoT devices connected to the home gateway, and the home gateway performs device management and control of IoT devices connected to the home gateway. For control, message delivery is performed between the service server and the IoT device.

Here, the access point operates by receiving external power, and supplies the external power to the home gateway through the USB port.

In addition, the service server may include: a data processing unit that processes encryption and decryption of communication with the home gateway, processes authentication and connection, and session management for the IoT device, and processes transmission and reception transactions with the IoT device; a device management unit that manages functions for controlling the IoT device, including manufacturer and model management of the IoT device, and including command sets for functions of the IoT device; And an adapter that can be accommodated regardless of the protocol of the IoT device, and includes a lower interworking middleware that enables communication between an upper service and the IoT device using a message in a standardized server platform.

A method for performing IP communication according to another feature of the present invention,

A method for a home gateway to perform IP communication through an access point, comprising: receiving a DHCP IP address from an access point connected through a USB port; and performing IP communication with a service server connected through the access point using the DHCP IP.

Here, before the step of receiving the DHCP IP, connecting to the access point through the USB port; receiving power from the access point through the USB point; allocating an Ethernet communication port to the USB port; and requesting the DHCP IP allocation from the access point through the Ethernet communication port.

In addition, the DHCP IP allocation is performed after the access point recognizes the home gateway requesting the DHCP IP allocation.

A method for performing IP communication according to another feature of the present invention,

A method for an access point to perform IP communication, comprising: receiving a DHCP IP allocation request from a home gateway connected through a USB port; and allocating a DHCP IP to the home gateway, and forwarding the allocated DHCP IP to the home gateway so that the home gateway can perform IP communication with a service server connected through the access point using the allocated DCHP IP.

Here, the transmitting to the home gateway may include: recognizing the home gateway that has made the DHCP IP assignment request; allocating a DHCP IP to the recognized home gateway; and transmitting the allocated DHCP IP to the home gateway as a response to the DHCP IP allocation request.

The transmitting to the home gateway may include: collecting device information about the home gateway that has requested the DHCP IP allocation; requesting authentication of the collected device information of the home gateway from the service server; allocating a DHCP IP address to the home gateway when authentication of device information of the home gateway succeeds by the service server; and transmitting the allocated DHCP IP to the home gateway as a response to the DHCP IP allocation request.

According to an embodiment of the present invention, IP communication through a USB port is possible in a home gateway.

In addition, by using the power provided through the USB port in the access network, a power adapter for separate power supply is unnecessary in the home gateway, and thus unit cost can be reduced.

In addition, since the service server performs management and control of the IoT device and the home gateway performs only message transmission between the service server and the IoT device, the hardware requirements of the home gateway are reduced, resulting in unit cost reduction.

In addition, there is little room for modification between the home gateway, service server, and IoT device.

In addition, if a new control command for an IoT device or an existing command needs to be modified, the service server can immediately modify it and respond quickly.

1 is a schematic block diagram of a home network system according to an embodiment of the present invention.
2 is a diagram showing a specific configuration of the access point shown in FIG. 1;
FIG. 3 is a diagram showing a specific configuration of the home gateway shown in FIG. 1 .
FIG. 4 is a diagram showing the structure of a protocol stack between an access point and a home gateway shown in FIG. 1;
FIG. 5 is a diagram showing a specific configuration of the service server shown in FIG. 1 .
6 is a flowchart of a method of performing IP communication by a home gateway in a home network system according to an embodiment of the present invention.
7 is a flowchart of a method of performing IP communication by a home gateway in a home network system according to another embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily carry out the present invention. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein. And in order to clearly explain the present invention in the drawings, parts irrelevant to the description have been omitted, and similar reference numerals have been attached to similar parts throughout the specification.

Throughout the specification, when a certain component is said to "include", it means that it may further include other components without excluding other components unless otherwise stated.

In addition, terms such as “… unit”, “… unit”, and “module” described in the specification mean a unit that processes at least one function or operation, which may be implemented by hardware, software, or a combination of hardware and software.

Hereinafter, a home network system according to an embodiment of the present invention will be described with reference to the drawings.

1 is a schematic block diagram of a home network system according to an embodiment of the present invention.

As shown in FIG. 1 , a home network system 10 according to an embodiment of the present invention includes an access point (AP) 100 , a home gateway 200 and a service server 300 .

The access point 100, for example, a wired/wireless router, is connected to an external network such as the Internet so that the home gateway 200 can be connected to the service server 300 through the access point 100. At this time, the access point 100 may be connected to a modem (not shown) connected to an external network.

The access point 200 may allocate an IP address to the home gateway 200 by being allocated a wide area network (WAN) internet protocol (IP) of an external network.

The access point 200 may connect a plurality of devices connected through a local area network (LAN) interface or a universal serial bus (USB) interface to an external network.

In addition, the access point 200 receives and uses external power, and can also provide external power through a USB interface.

The home gateway 200 may be connected to the access point 200 through a USB interface.

The home gateway 200 is connected to an external network through the access point 200, and is specifically connected to the service server 300 through the external network to form a home network.

In addition, the home gateway 200 may provide a home network service by controlling a plurality of IoT devices 400 that are wired or wirelessly connected. At this time, the home gateway 200 may connect to the plurality of IoT devices 400 using various types of wired/wireless protocols. For example, the home gateway 200 may communicate with a plurality of IoT devices 400 through Z-WAVE, Bluetooth, Zigbee, or the like.

In an embodiment of the present invention, the home gateway 200 and the access point 100 each have a USB port so that they can be interconnected through a USB interface.

The home gateway 200 and the access point 100 are implemented to enable Ethernet communication in a USB driver, and can perform IP communication based on USB communication.

The home gateway 200 performs an IP communication connection with the service server 300 connected through the access point 100 to deliver messages between the IoT device 400 and the service server 300 .

The service server 300 performs IP communication with the home gateway 200 connected through the access point 100 to provide a home network service. In particular, the service server 300 directly controls the IoT device 400, including a terminal control and command system for controlling the IoT device 400 connected to the home gateway 200.

In addition, when a new IoT device or non-IP communication IoT device is connected to the home gateway 200, the service server 300 updates an application program related to a control and command system for the IoT device, so that the service server 300 can directly control the new IoT device or non-IP communication IoT device without firmware change or update in the home gateway 200 to which the IoT device is connected.

FIG. 2 is a diagram showing a specific configuration of the access point 100 shown in FIG. 1 .

As shown in FIG. 2 , the access point 100 includes a WAN interface 110 , a power supply 120 , a LAN interface 130 , a USB interface 140 and a communication control unit 150 .

The WAN interface 110 is connected to an external network such as the Internet, and the home gateway 200 is connected to the service server 300 through the external network to enable a home network service. The WAN interface 110 may be connected to an external network such as an asymmetric digital subscriber line (ADSL), a very high-data rate digital subscriber line (VDSL), or a fiber to the home (FTTH).

The power supply unit 120 receives power from the outside and supplies it to internal components, that is, the WAN interface 110, the LAN interface 130, the USB interface 140, and the communication control unit 150. In particular, the USB interface 140 may supply power supplied from the power supply 120 to an external device connected through a USB port, for example, the home gateway 200 .

The LAN interface 130 allows a plurality of devices connected through the LAN port, for example, a PC, various wired IP network equipment, etc., to perform Ethernet communication through the WAN interface 110 to be connected to an external network.

The USB interface 140 provides an interface for devices that perform USB communication. In particular, the home gateway 200 connected through the USB interface 140 is connected to an external network through the WAN interface 110, ultimately providing a USB communication connection enabling IP communication with the service server 300.

In addition, the USB interface 140 supplies power supplied from the power supply 120 to the home gateway 200 connected to the USB interface 140, so that the home gateway 200 does not have a power adapter for receiving a separate external power supply.

The communication control unit 150 operates using power supplied from the power supply unit 120 and performs communication control so that devices connected through the USB interface 140 or the LAN interface 130, for example, the home gateway 200, can be connected to an external network through the WAN interface 110.

In particular, the communication control unit 150 opens an Ethernet network port for the home gateway 200 connected to the USB interface 140, and allocates an IP to the home gateway 200 through DHCP (Dynamic Host Configuration Protocol) so that the home gateway 200 connected through the USB interface 140, which is a non-IP communication connection, can perform IP communication using a USB driver. Accordingly, the home gateway 200 may perform IP communication through the USB interface 140 and communicate with the service server 300 through an external network to provide a home network service.

FIG. 3 is a diagram showing a specific configuration of the home gateway 200 shown in FIG. 1 .

As shown in FIG. 3 , the home gateway 200 includes a USB interface 210 , an IoT interface 220 , a communication control unit 230 and a power supply unit 240 .

The USB interface 210 provides an interface for devices that perform USB communication. In particular, it is connected to the access point 100 through the USB interface 210 and performs USB communication with the access point 100 . Ultimately, the home gateway 200 may perform IP communication based on USB communication through the access point 100 connected through the USB interface 210 .

In addition, the USB interface 210 receives power from the USB interface 140 of the access point 100 connected through the USB interface 210 and transfers it to the power supply unit 240 . Accordingly, since the home gateway 200 does not need to receive a separate external power supply, there is no need to use an existing power adapter for supplying external power.

The IoT interface 220 connects various external IoT devices 400 wired or wirelessly, and allows a communication connection between the connected IoT devices 400 and the external service server 300 to be performed. The IoT interface 220 may communicate with a plurality of IoT devices 400 through various types of wired/wireless communication methods, such as Z-WAVE, Bluetooth, and Zigbee.

The communication control unit 230 operates using power supplied from the power supply unit 240, and performs communication control such that a plurality of IoT devices 400 connected through the IoT interface 220 are connected to the access point 100 through the USB interface 210 and ultimately perform message delivery through communication with the service server 300 connected through the access point 100.

In particular, the communication control unit 230 may perform IP communication with the service server 300 by receiving an IP assigned by DHCP through the access point 100 connected through the USB interface 210, which is a non-IP communication connection. At this time, the communication control unit 230 performs IP communication using a USB driver as in the access point 100 .

Here, the structure of the protocol stack between the access point 100 and the home gateway 200 for performing IP communication by implementing Ethernet communication between the communication control unit 230 and the access point 100 through a USB driver is shown in FIG. 4 . As shown in FIG. 4, the access point 100 and the home gateway 200 each implement Ethernet communication (Ethernet over USB) in the USB driver layer, so that IP communication between the access point 100 and the home gateway 200 is possible through such Ethernet communication. At this time, the access point 100 may need a procedure for checking whether the home gateway 200 performing IP communication through the USB driver is a normal device.

In addition, the communication control unit 230 performs message transfer between the service server 300 and the IoT device 400. At this time, the communication control unit 230 may further include a message transfer unit 231 that transmits the message.

The message transmission unit 231 serves to directly deliver a message transmitted from the service server 300 to the IoT device 400 or to directly transmit a message transmitted from the IoT device 400 to the service server 300. Here, the message delivery unit 231 may use a protocol used for communication with a service server in order for an existing home gateway to directly control an IoT terminal, including a terminal management and command control system for an IoT device, in an embodiment of the present invention. At this time, in the existing protocol, in particular, in the packet header, it is necessary to specifically specify the format of the message transmitted between the home gateway and the service server, but in the embodiment of the present invention, the home gateway 200 does not control the IoT device 400, and only forwards the message of the service server 300 to the IoT device 400 and the message of the IoT device 400 to the service server 300. Therefore, the extension field without using the format definition used in the existing protocol ( Processing in the home gateway 200 can be minimized by including and transmitting messages received from the service server 300 and the IoT device 400 as they are in the extension field.

[Table 1] below shows an example of a packet header when the home gateway 200 and the IoT device 400 use Z-WAVE communication.

[Table 1]

However, as in the example of [Table 1], in the header extension field of the packet header, it is necessary to specify only the field (edge node id) and the identification field (Z-Wave Result Code) indicating the result code transmitted from the IoT device 400. These extended fields are indicated in bold in [Table 1].

The power supply unit 240 receives power supplied from the outside, that is, from the access point 100 through the USB interface 210, and uses it as power inside the home gateway 200. Therefore, the home gateway 200 does not have a power adapter for receiving a separate external power supply.

FIG. 5 is a diagram showing a specific configuration of the service server 300 shown in FIG. 1 .

As shown in FIG. 5 , the service server 300 includes a data processing unit 310 , a device management unit 320 and lower linkage middleware 330 .

The data processing unit 310 processes encryption and decryption in communication, authentication and connection to devices, session management, transmission and reception transactions, distributed processing of resources through a scheduler, and interlocking with external servers.

The device management unit 320 overall manages provided functions, such as manufacturer and model management of subordinate interlocking IoT devices, as well as command sets for IoT device functions. Conventionally, the device management unit 320 is located in the home gateway 200, and the home gateway 200 directly manages and controls the IoT device 400. However, in the embodiment of the present invention, the service server 300 has the device management unit 320 to manage and control the IoT device 400 connected to the home gateway 200. Accordingly, when a new IoT device or a non-IP communication IoT device is connected to the home gateway 200, the service server 300 can control the IoT device 400 newly connected to the home gateway 200 without performing a separate firmware update in the home gateway 200 simply by performing an update to add information about the newly connected IoT devices in the device management unit 320.

The lower interworking middleware 330 has an adapter that can accommodate regardless of the protocol of the lower device, i.e., the IoT device 400 connected to the home gateway 200 connected through IP communication, and allows communication between the upper service and the lower device 400 through messages within the standardized server platform. At this time, the adapter includes a wireless device standard adapter 231 for connection to a wireless IoT device and a wired device standard adapter 232 for connection to a wired IoT device.

The lower interworking middleware 330 is connected to the home gateway 200 through IP communication through the access point 100 connected to an external network, and transmits a message with a plurality of IoT devices 400 connected to the home gateway 200 wired or wirelessly. As a result, management and control of the corresponding IoT device 400 can be performed.

As such, it can be seen that the service server 300 according to the embodiment of the present invention has a modular structure that can be easily changed and added to accommodate the lower protocols as a whole.

Hereinafter, a method of performing IP communication through the USB interface by the home gateway 200 in the home network system 10 according to an embodiment of the present invention will be described with reference to the drawings.

6 is a flowchart of a method of performing IP communication by a home gateway in a home network system according to an embodiment of the present invention.

First, for convenience of description, it is assumed that the access point 100 is connected to an external power source and operates in a normal state through initialization.

Referring to FIG. 6 , the home gateway 200 is connected to the USB port of the access point 100 through the USB port (S100). At this time, power of the access point 100 is supplied to the home gateway 200 through the USB port and is used as internal power of the home gateway 200 (S110).

In this way, when power is supplied from the access point 100, the home gateway 200 performs booting to initialize each component and allocates an Ethernet communication port to a USB port (S120).

Thereafter, the home gateway 200 requests DHCP IP allocation from the access point 100 through the communication port assigned to the USB port (S130).

As such, when DHCP IP allocation is requested through the USB port, the access point 100 recognizes a device connected through the USB port, that is, the home gateway 200, allocates an IP to the home gateway 100 (S140), and responds to the home gateway 200 as a result of the DHCP IP allocation (S150).

Thereafter, the home gateway 200 accesses an external network through the access point 100 based on the USB interface using the IP allocated in step S150 and performs IP communication with the service server 300 (S160).

On the other hand, if a separate authentication procedure through the service server 300 is required in the case of implementing only authorized devices through the USB port of the access point 100 to allow network communication for security reasons, this will be described with reference to FIG. 7 .

7 is a flowchart of a method of performing IP communication by a home gateway in a home network system according to another embodiment of the present invention.

In FIG. 7 , steps S200 to S230 are the same as steps S100 to S130 described above with reference to FIG. 6 , so detailed descriptions are omitted here and only different contents will be described.

When DHCP IP allocation is requested from the home gateway 200 in step S230, the access point 100 recognizes a device connected through the USB port, that is, the home gateway 200, collects device information about the home gateway 100 (S240), transfers the collected device information about the home gateway 100 to the service server 300, and requests authentication of the device information about the home gateway 200 (S250). Here, the device information may include a MAC address, model name, terminal serial number, and the like.

Then, when the authentication result from the service server 300, for example, the result of successful authentication is returned to the access point 100 (S260), the access point 100 allocates an IP to the home gateway 200 (S270), and then responds to the home gateway 200 as a DHCP IP allocation result (S280).

Thereafter, the home gateway 200 accesses an external network through the access point 100 based on the USB interface using the IP assigned in step S280 and performs IP communication with the service server 300 (S290).

In this way, if the access point 100 transmits the device information of the home gateway 200 connected through the USB port to the service server 300, authenticates the home gateway 200, receives a successful authentication result, and assigns an IP to the home gateway 200, the security issue can be solved.

Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are also within the scope of the present invention.

Claims (19)

a broadband network interface connected to an external network;
a USB interface providing a connection for USB communication; and
When a home gateway connected to an IoT (Internet of Things) device using a non-IP communication protocol is connected through the USB interface, a dynamic host configuration protocol (DHCP) IP address is allocated to the home gateway so that the home gateway can perform IP (Internet Protocol) communication with a service server that controls the IoT device through the broadband network interface;
The communication control unit
When the home gateway is connected to the USB interface, the access point transfers device information about the home gateway to the service server, requests authentication of the device information about the home gateway, and allocates the DHCP IP address to the home gateway when receiving a result of successful authentication of the home gateway from the service server. According to claim 1,
Further comprising a power supply unit receiving power from the outside and using it as internal power of the access point;
The power supply unit supplies power to an external device through the USB interface,
access point. delete According to claim 1,
The communication control unit enables the external device to perform IP communication through Ethernet communication (Ethernet over USB) in the USB driver layer.
access point. a USB interface providing a connection for USB communication with an external device;
IoT interface that provides a wired/wireless communication connection based on Internet of Things (IoT) devices used for home network services and non-IP communication protocols; and
When requesting assignment of a DHCP IP address to an access point connected through the USB interface and receiving an assignment of a DHCP IP address according to an authentication result from a service server controlling the IoT device, IP communication is performed through the assigned DHCP IP address to connect to an external network, and a communication control unit connected to a service server that controls the IoT device for a home network service through the external network to transfer messages between the service server and the IoT device;
The communication control unit
When a message is transmitted between the service server and the IoT device, an identifier field for distinguishing the IoT device and a result code field of the IoT device for a control command of the service server are included in an extension field in a packet header of the non-IP communication protocol, and transmitted. According to claim 5,
Further comprising a power supply unit supplying internal power to the home gateway;
The power supply receives power from the access point through the USB interface and uses it as the internal power.
home gateway. delete According to claim 5,
The communication control unit performs IP communication with the access point through Ethernet communication (Ethernet over USB) in the USB driver layer,
home gateway. delete delete As a home network system,
Includes access points, home gateways and service servers;
The access point controls the home gateway to be connected to an external network through a USB interface and perform IP communication;
The home gateway is connected to the access point through the USB interface and performs IP communication with the service server connected to the external network;
The service server performs IP communication with the home gateway connected to the access point through a USB interface to perform device management and control of IoT devices connected to the home gateway,
The home gateway performs message transfer between the service server and the IoT device for control of the IoT device by the service server,
The service server,
a data processing unit that processes encryption and decryption of communication with the home gateway, processes authentication and connection with the IoT device, and session management, and processes transmission/reception transactions with the IoT device;
a device management unit that manages functions for controlling the IoT device, including manufacturer and model management of the IoT device, and including command sets for functions of the IoT device; and
Including an adapter that can be accommodated regardless of the protocol of the IoT device, and including a lower interworking middleware that enables communication between a higher service and the IoT device using a message in a standardized server platform. Home network system. According to claim 11,
The access point operates by receiving external power, and supplies the external power to the home gateway through the USB interface.
home network system. delete A method in which a home gateway connected to an Internet of Things (IoT) device using a non-IP communication protocol performs IP communication through an access point,
connecting to the access point through a USB port;
allocating an Ethernet communication port to the USB port;
requesting DHCP IP address allocation from the access point through the Ethernet communication port;
Receiving a DHCP IP address from the access point according to an authentication result in a service server controlling the IoT device; and
Performing IP communication with the service server connected through the access point using the DHCP IP address to transfer a message between the service server and the IoT device,
The step of forwarding the message is
An IP communication method in which an extension field in a packet header of the non-IP communication protocol includes an identifier field for distinguishing the IoT device and a result code field of the IoT device for a control command of the service server and transmitted. According to claim 14,
Receiving power from the access point through the USB port
A method for performing IP communication further comprising a. delete A method in which an access point performs IP communication,
Connecting a home gateway connected to an Internet of Things (IoT) device using a non-IP communication protocol through a USB port and receiving a DHCP IP address allocation request from the home gateway;
transmitting device information about the home gateway to a service server that controls the IoT device and requesting authentication of device information about the home gateway;
allocating a DHCP IP address to the home gateway when receiving a result of successful authentication of the home gateway from the service server, and forwarding the assigned DHCP IP address to the home gateway so that the home gateway can perform IP communication with a service server connected through the access point using the allocated DCHP IP address;
How to perform IP communication including. delete delete

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