KR20200117155A - WiFi setting method using Bluetooth of IoT devices - Google Patents

Abstract

The present invention relates to an apparatus and method for connecting and setting up multiple Internet of things (IoT) devices to a Wi-Fi access point (AP). According to the present invention, a smart terminal broadcasts a Bluetooth advertising packet containing an SSID and password of the Wi-Fi AP, extracts Wi-Fi AP access information to access from the packet received from the IoT device, and sets a Wi-Fi connection in the smart terminal, so that Wi-Fi can be easily set for multiple IoT devices at once.

Description

WiFi setting method using Bluetooth of IoT devices}

The present invention relates to a method of establishing a connection between a plurality of IoT devices with a Wi-Fi AP using Bluetooth communication.

General IoT devices are equipped with communication means for connecting to various networks, and in order to access such networks, it is necessary to set network connection information for the communication means of the IoT device.

When an input means or a display for setting the network connection information of the communication means is provided, the user can set the communication means while looking at the input means or display. However, it is not easy for a general user who does not have knowledge of the network to find an optimal network and directly set a default for it.

There are no displays for setting up a separate network connection or ports for connecting external devices to smart devices that are installed after being miniaturized. There is a limit to further downsizing the device size when installing a display or an external device connection port.

If the conventional IoT device does not have a display screen, it is not possible to display a list of searched SSIDs of nearby Wi-Fi APs and select or directly input them. For this reason, it can be set using a smartphone app.

Set the short-range wireless communication pairing with the IoT device in the smartphone app, and send it to the IoT device through SSID search, selection, and password input of the nearby Wi-Fi AP to set the Wi-Fi of the IoT device.

However, in the conventional Wi-Fi setting method as described above, a separate setting app for a corresponding device must be driven in a smartphone, and a process of searching for a device and pairing connection is required in order to pair with a device. In particular, if you need to set up multiple devices, there is a hassle of having to pair with the devices each time and connect once to change the settings.

Korean Patent Laid-Open Publication No. 10-2015-0123573 (published on November 4, 2015) (Name of invention: Mobile communication terminal and communication setting module for communication setting of IOT device, and communication setting method of IOT device using a mobile communication terminal)

An object of the present invention is to solve the hassle of having to set up a pairing and Wi-Fi each time when multiple devices need to be set, as described above, Bluetooth advertising with Wi-Fi AP access information required for Wi-Fi setting in a smartphone app. The purpose of the present invention is to provide an apparatus and method for configuring a Wi-Fi using Bluetooth of IoT devices that broadcast a packet, receive a corresponding Bluetooth advertising packet, and set a Wi-Fi connection according to access information of a Wi-Fi AP to be connected.

A method of setting Wi-Fi using Bluetooth of IoT devices for achieving the object of the present invention,

In a device requiring Wi-Fi connection setup, the Bluetooth communication is set to Central mode (Scanning mode), and the smart terminal capable of Bluetooth communication and obtaining Wi-Fi AP information generates Wi-Fi AP information and connection password as a Bluetooth advertising packet. Broadcasting, the device receives the Bluetooth advertising packet, combines the AP information, and establishes a connection to a Wi-Fi AP corresponding to the AP information.

In the Wi-Fi setting apparatus using Bluetooth of IoT devices according to the present invention, a communication module capable of Bluetooth communication and Wi-Fi communication is provided in the IoT device for Wi-Fi connection, and is configured to set the Wi-Fi automatic setting mode and the Bluetooth central mode, A smart terminal that controls Wi-Fi settings is provided with a communication module capable of Bluetooth communication and Wi-Fi communication, a means for scanning a Wi-Fi AP, selecting an SSID of the scanned Wi-Fi AP, and receiving a corresponding AP access password from a user, the selected SSID, and It is characterized by including a Wi-Fi setting app that inserts a password into the header information of an advertising packet, generates a Bluetooth advertising packet, broadcasts, and provides AP information to connect to the IoT device. .

Wi-Fi setting method using Bluetooth according to the present invention,

Preparing to change to a Bluetooth Central mode (receiving mode) through a specific event (long press of a button, power on, etc.) in a device requiring Wi-Fi setting;

Driving an app capable of transmitting a Bluetooth Advertising Packet for a smartphone;

Selecting an SSID to be connected to the device by scanning a nearby Wi-Fi signal and inputting a corresponding password;

Repeatedly broadcasting a packet set required for setting by pressing a start button in the app;

A device for setting up a Wi-Fi connection, scanning a BLE Advertising packet signal and combining values through a header in the packet when a packet containing configuration information is received;

Regardless of the order, when all the SSID and password information are received, the connection is attempted to connect to the Wi-Fi AP, and when successful, the step of indicating whether the connection is successful with an LED is performed to establish a Wi-Fi AP connection of several devices at once.

The method according to an embodiment of the present invention for solving the above problems may be implemented with a program for executing the method on a computer and a recording medium on which the program is recorded.

The present invention has the effect of allowing a user to set a Bluetooth central mode of a device and run a Wi-Fi setting app of a smart terminal to establish connection of several IoT devices to a Wi-Fi AP at once only by selecting an AP to be connected and entering a password.

Therefore, if the IoT device does not have a display, there is an effect that it is possible to easily set the Wi-Fi AP settings of several devices at once.

1 is a schematic explanatory diagram of a Wi-Fi setting of a device using Bluetooth according to the present invention.
2 is a block diagram of a Wi-Fi setting function of a device using Bluetooth according to the present invention.
3 is a flowchart illustrating a Wi-Fi connection setting of an IoT device according to the present invention.
4 is a flowchart illustrating an IoT device WiFi setting using Bluetooth of a smart terminal according to the present invention.

In order to explain the present invention, operational advantages of the present invention, and objects achieved by the implementation of the present invention, the following will illustrate a preferred embodiment of the present invention and look at it with reference.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention, and expressions in the singular may include a plurality of expressions unless the context clearly indicates otherwise. In addition, in the present application, terms such as "comprise" or "have" are intended to designate the presence of features, numbers, steps, actions, components, parts, or a combination thereof described in the specification, but one or more other It is to be understood that the presence or addition of features, numbers, steps, actions, components, parts, or combinations thereof, does not preclude in advance the possibility of being excluded.

In describing the present invention, when it is determined that a detailed description of a related known configuration or function may obscure the subject matter of the present invention, a detailed description thereof will be omitted.

The present invention repeatedly broadcasts a Bluetooth advertising packet for Wi-Fi AP information for network access through a smartphone without the need to connect a separate device for setting a Wi-Fi network connection to various Internet of Things (IoT) devices, A method of automatically setting the Wi-Fi network connection of the IoT device by acquiring the Wi-Fi AP information to be connected by receiving the Bluetooth advertising packet broadcast by the Bluetooth communication module installed in the IoT device, and attempting to connect to the Wi-Fi AP. Present.

1 is a schematic explanatory diagram of a Wi-Fi setting of a device using Bluetooth according to the present invention.

A number of IoT devices 10 requiring a Wi-Fi network connection setting, a Wi-Fi AP 20 for the IoT device 10 to connect to, and the information of the Wi-Fi AP 20 are scanned, and a Bluetooth advertisement along with a password It consists of a smart terminal 30 that broadcasts a gong packet.

The IoT device 10 receives the Bluetooth advertising packet, combines and obtains Wi-Fi AP information, and attempts to connect to the Wi-Fi AP to automatically establish a Wi-Fi connection.

2 is a block diagram of a Wi-Fi setting function of a device using Bluetooth according to the present invention.

The IoT device 10 includes an IoT device main module 11, a button 12, a Wi-Fi communication module 13 and a Bluetooth communication module 14, and includes a Wi-Fi for automatic Wi-Fi setup of the present invention. It is configured to further include a setting app (15) and an LED (16) for displaying the Wi-Fi connection status.

The IoT device main module 11 may be configured to perform the main purpose of the device itself, and the button 12 may be configured as a power button or an operation start button.

It is made so that the WiFi setting app 15 can be driven. The Wi-Fi setting app 15 is a program configured to automatically perform Wi-Fi connection setup using Bluetooth of the present invention, and may be installed as an app of the IoT device main module 11.

The Wi-Fi setting app 15 according to the present invention sets a Bluetooth central mode (receive mode), receives a Bluetooth advertising packet and combines Wi-Fi AP information to be connected, and attempts to connect to a corresponding Wi-Fi AP. It is made so that connection can be set automatically. In addition, when the connection setting with the WiFi AP 20 is completed, the WiFi setting app 15 displays a WiFi connection setting state through the LED 16.

The smart terminal 30 is installed with a smart terminal main module 31, an input means 32, a WiFi communication module 33, a Bluetooth communication module 34, and a device WiFi setting control app 35. The device Wi-Fi setting control app 35 is an app that controls Wi-Fi settings of a device using Bluetooth according to the present invention, and may be installed as an app on the main module 31 of the smart terminal.

The device Wi-Fi setting control app 35 searches and displays Wi-Fi AP information broadcasted by the Wi-Fi AP 20, and when the user selects a Wi-Fi AP SSID to which the device is to be connected, and enters the password, the Wi-Fi AP The SSID and password of are loaded in the header of the Bluetooth advertising packet to generate a Bluetooth advertising packet, and the Bluetooth advertising packet is repeatedly broadcast.

Here, the smart terminal 30 does not necessarily have a Wi-Fi communication module 333 provided. When the Wi-Fi communication module 33 is not provided in the smart terminal 30, the device Wi-Fi setting control app 35 receives the SSID of the Wi-Fi AP to which the device is connected and the corresponding password from the user, and uses the It may be configured to generate and broadcast a butting packet.

Accordingly, the IoT device 10 receives the Bluetooth advertising packet broadcast by the smart terminal 30, extracts the SSID and password of the Wi-Fi AP 30 to be connected from the received Bluetooth advertising packet, Using the extracted Wi-Fi AP and password, a Wi-Fi connection is automatically established by attempting to connect to the Wi-Fi AP 20, and the connection status is displayed through the LED 16.

Meanwhile, the Wi-Fi setting app 15 of the IoT device 10 may be configured to store information on a plurality of Wi-Fi APs and attempt a Wi-Fi connection. In the case of a mobile device, two or more Wi-Fi AP setting information is stored in advance so that a corresponding Wi-Fi AP can be automatically connected at the moved location, and Wi-Fi connection can be set.

The method of generating a Bluetooth advertising packet for controlling Wi-Fi settings in the smart terminal 30 includes data in a packet data unit (PDU) in a Bluetooth advertising packet. You can use the (Data) area, and most easily, you can use the iBeacon standard defined by Apple.

In order to set up multiple devices that require Wi-Fi connection setup at once, an app on one smartphone repeatedly broadcasts a packet required for Wi-Fi configuration, and multiple devices receive and process each packet. You can do it.

Among the iBeacon standards, UUID, Major, and Minor ID can be easily modified in general beacon hardware devices or smartphone beacon signal transmission apps. Therefore, using a total of 20 bytes, the SSID and password information of Wi-Fi is included in the packet and broadcast.

In this case, since the size of the usable bytes is small (20 bytes) to include both the SSID and password at one time, there is also a method of sending (separately) divided into multiple packets.

The division of the Wi-Fi AP connection setting value (SSID or password) in the header and if one setting value does not fit within one packet (20 header size), the sequence number of the next packet and the size of the total setting value It may include. The data includes values for actual settings, and in some cases, passwords can be encrypted.

Example of actual advertising packet setting

SSID: Thisiswifissid12345, Password: password

Packet 1

Header (4 bytes): 0x01 (SSID), 0x01 (packet 1), 0x13 (SSID length 19)

Data (16 bytes): 0x54, 0x68, 0x69, 0x73, 0x69, 0x73, 0x77, 0x69, 0x66, 0x69, 0x73, 0x73, 0x69, 0x64, 0x31, 0x32

Packet 2

Header 2 (4 bytes): 0x01 (SSID), 0x02 (packet 2), 0x13 (SSID length 19)

Data 2 (16 bytes): 0x33, 0x34, 0x46, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00

Packet 3

Header 3 (4 bytes): 0x02 (password), 0x01 (packet 1), 0x08 (password length 8)

Data 3 (16 bytes): 0x70, 0x61, 0x73, 0x73, 0x77, 0x6F, 0x72, 0x64, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00

As described above, Packet 1, Packet 2, and Packet 3 are continuously transmitted (broadcasting) alternately.

The IoT device 10 receives the Bluetooth advertising packet broadcast as described above, extracts a combination of the SSID and password for setting the WiFi AP, and attempts to connect to the WiFi AP using this.

3 is a flowchart illustrating a Wi-Fi connection setting of an IoT device according to the present invention.

The IoT device is installed with a WiFi setting app for WiFi setting using Bluetooth according to the present invention. The WiFi setting app includes the steps of setting a Bluetooth central mode (receiving mode) to prepare WiFi setting (S11); Receiving a set of Bluetooth advertising packets received in a Bluetooth central mode (S12); Extracting and combining Wi-Fi AP access information (SSID and password) included in the packet when a packet of a predefined standard is received from the received Bluetooth advertising packet set (S13); When the reception of the Wi-Fi access information is completed (S14), attempting to connect to the corresponding Wi-Fi AP (S15); When the connection to the Wi-Fi AP is completed, displaying that the Wi-Fi connection setting is completed (S16); Includes.

In the Bluetooth central mode setting step (S11), when the button is long pressed or the power is turned on, the WiFi setting app 15 is automatically operated and the Bluetooth central mode can be set.

On the other hand, when the Wi-Fi setting app 15 is running, it first searches whether Wi-Fi AP information is set before setting to the Bluetooth Central mode, and if Wi-Fi AP information is set, it attempts Wi-Fi access using the corresponding information. Connected.

If the Wi-Fi AP information is not set (saved) or if the connection to the set Wi-Fi AP is not established, the Bluetooth Central mode is set to scan and receive the Bluetooth advertising packet.

The Bluetooth advertising packet generates and broadcasts Wi-Fi AP information (SSID and password) that the IoT device 10 should access in the smart terminal 30 as a Bluetooth advertising packet. As described above, if a set of Bluetooth advertising packets broadcasted by the smart terminal 30 is received, and if a packet has a previously defined standard, information on the Wi-Fi AP is extracted from the packet and combined. This is because when broadcasting Wi-Fi AP access information using a Bluetooth advertising packet, all information corresponding to one packet cannot be loaded, so the information is divided into a plurality of packets and the information is loaded and transmitted. It is to extract and combine the Wi-Fi AP information.

When the reception of the Wi-Fi AP information to be connected is completed, a connection is made to the Wi-Fi AP using the SSID and password of the corresponding Wi-Fi AP, and when the connection is completed, the connection completion status is displayed through an LED.

4 is a flowchart illustrating an IoT device WiFi setting using Bluetooth of a smart terminal according to the present invention.

The smart terminal 30 may be, for example, a smart phone, and is a smart terminal capable of generating and transmitting at least a Bluetooth advisory packet. In the present invention, it will be described that it is implemented in a smart phone.

The smart terminal 30 includes at least a Bluetooth communication module, a means for a user to input Wi-Fi AP information and a password to which the IoT device 10 is to be connected, and a device Wi-Fi setting control app 35.

Driving the device WiFi setting control app 35 (S11); Scanning and displaying a WiFi AP (S22); Step of receiving a selection of a Wi-Fi SSID and a password to be connected to the IoT device from a user (S23); Inserting the SSID and password to generate a Bluetooth advisory packet (S24); And repeating and broadcasting the Bluetooth advisory packet (S25).

The step of scanning and displaying the Wi-Fi AP (S22) may be implemented when a Wi-Fi communication module is included in the smart terminal, and there is no Wi-Fi communication module, or the SSID and password of the Wi-Fi AP to be accessed to the user before scanning the Wi-Fi AP information. It is also possible to receive input directly from the user by providing an input window for inputting. When there is no user input for a certain period of time or when a scan mode is selected, the SSID of the Wi-Fi AP broadcasted by the Wi-Fi AP is automatically scanned and displayed.

When the user directly enters the Wi-Fi SSID or selects it by looking at the display, the password is inputted, and the SSID and password are inserted into the Bluetooth advertising packet to generate a Bluetooth advertising packet, which is repeatedly broadcast.

In the Bluetooth advertising packet including the Wi-Fi AP access information, since the length of the header of one packet is limited, both the SSID and the secret number cannot be loaded and sent in one packet. Therefore, by dividing into a plurality of packets, the Bluetooth advertising packet is sequentially transmitted, which is repeatedly broadcast.

Therefore, the IoT device 10 receives the Bluetooth advertising packet that is repeatedly transmitted, extracts the SSID and password of the connecting port Wi-Fi AP, tries to access the corresponding Wi-Fi AP based on the extracted information, and when the connection is completed. It is indicated by LED.

As described above, when the smart terminal 30 is used to run the device's Wi-Fi setting control app, input the connection information (SSID and secret number) of the Wi-Fi AP to which the device will access, and start broadcasting, the corresponding SSID and password information The inserted Bluetooth advertising packet is broadcast, and the IoT device 10 receives the Bluetooth advertising packet, extracts the corresponding SSID and password, tries to access the WiFi AP, and displays the completion status, You can see that the Wi-Fi connection setup is complete. Therefore, it is possible to establish Wi-Fi connection of multiple IoT devices at once.

Meanwhile, the above-described method according to various embodiments of the present invention may be implemented as a program and provided to each server or devices while being stored in various non-transitory computer readable media. Accordingly, the user terminal 100 can access the server or device and download the program.

The non-transitory readable medium refers to a medium that stores data semi-permanently and can be read by a device, not a medium that stores data for a short moment, such as a register, cache, or memory. Specifically, the above-described various applications or programs may be provided by being stored in a non-transitory readable medium such as a CD, DVD, hard disk, Blu-ray disk, USB, memory card, and ROM.

The above description is merely illustrative of the technical idea of the present invention, and those of ordinary skill in the art to which the present invention pertains will be able to make various modifications and variations without departing from the essential characteristics of the present invention. Accordingly, the embodiments described in the present invention are not intended to limit the technical spirit of the present invention, but to explain the technical spirit, and the technical spirit of the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted by the claims below, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

10: IoT device 15: WiFi setting app
20: wifi AP 30: smart terminal
35: Device WiFi setting control app

Claims (4)

As a method of connecting multiple IoT devices to a Wi-Fi AP,
The IoT device has a Bluetooth communication module, a WiFi communication module, and a WiFi setting app installed,
The WiFi setting app,
Setting a Bluetooth central mode (receiving mode) to prepare for Wi-Fi setting;
Receiving a Bluetooth advertising packet transmitted by loading Wi-Fi AP access information to be accessed by the IoT device in the smart terminal;
Extracting and combining Wi-Fi AP access information (SSID and password) included in the packet when a packet of a predefined standard is received from the received Bluetooth advertising packet set;
Attempting to connect to a corresponding Wi-Fi AP when receiving the Wi-Fi access information is completed;
When the connection with the Wi-Fi AP is completed, indicating that the Wi-Fi connection setting is completed; Characterized in that it comprises a
How to set up Wi-Fi using Bluetooth of IoT devices.
The method according to claim 1,
Devices requiring the Wi-Fi connection setting,
If the Wi-Fi AP access information is set in the Wi-Fi setting mode, try Wi-Fi access according to the corresponding access information,
When the Wi-Fi AP access information is not set, or when the Wi-Fi connection is not connected for a certain period of time or more, the Bluetooth central mode is set to receive a Bluetooth advertising packet and establish a Wi-Fi AP connection.
How to set up Wi-Fi using Bluetooth of IoT devices.
The method according to claim 2,
Devices requiring the Wi-Fi connection setting,
When a connection is not made for a certain period of time during a Wi-Fi connection, the Bluetooth central mode is set to receive a Bluetooth advertising packet and two or more different Wi-Fi AP access information are set in a Wi-Fi AP connection setting method. With
How to set up Wi-Fi using Bluetooth of IoT devices.
A computer-readable nonvolatile recording medium in which a program for executing the method according to any one of claims 1 to 3 on a computer is recorded.

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