KR102633012B1 - A system for providing USB tethering services and method thereof - Google Patents

Abstract

The present invention relates to a USB tethering service providing system and method.
According to the present invention, when the connection with a tethering terminal is activated through a USB cable, the USB tethering service providing system transmits a random IP address to the connected tethering terminal and connects the tethering terminal to the tethering terminal. When receiving a request signal, the tethering providing terminal compares the IP address of the tethering using terminal with an arbitrary IP address and generates an event regarding whether or not the corresponding tethering using terminal is connected, and from the tethering providing terminal. It includes a tethering terminal that transmits a tethering connection request through RNDIS (Remote NDIS) using a random IP address received.
In this way, according to the present invention, a random IP address can be provided to a tethering terminal that wants to use USB tethering, and the tethering connection status of the tethering terminal can be determined using the provided random IP address, Event alarms can be provided according to USB connection and disconnection.

Description

USB tethering service providing system and method {A system for providing USB tethering services and method thereof}

The present invention relates to a USB tethering service providing system and method for a portable terminal. More specifically, a USB tethering service providing system that can immediately determine the connection status and IP of a device tethered to a portable terminal and the same. It's about method.

The tethering function can be used to connect navigation devices, laptops, netbooks, tablet PCs, desktop PCs, e-readers, PDAs, etc. to mobile communication terminals through USB (Universal Serial Bus), Bluetooth devices, Wi-Fi (wireless LAN), etc. It is a technology that allows wireless Internet to be used on connected devices by connecting devices.

In order to use this tethering function, the tethering providing terminal must first activate the tethering function. However, in general, in order to activate the tethering function in a tethering providing terminal, several steps are required to activate the tethering function according to a complex user interface.

Figure 1 is an example diagram illustrating a state in which a conventional tethering providing terminal and a tethering using terminal are connected using a USB cable.

As shown in Figure 1, in the past, due to security issues, it was impossible to access the ARP (Address Resolution Protocol) table of the tethering providing terminal, resulting in a problem in which the IP address of the tethering terminal connecting to the tethering providing terminal was unknown. There was this.

Since terminals such as smartphones and tablets are converted from USB hosts to USB devices, there was a problem in that events due to USB tethering connection and disconnection did not occur.

The technology behind the present invention is disclosed in Korean Patent Publication No. 10-2012-0070344 (published on June 29, 2012).

According to the present invention, the object of the present invention is to provide a USB tethering service providing system and method that can immediately determine the connection status and IP address of a device tethered to a portable terminal.

According to an embodiment of the present invention to achieve this technical problem, when the connection with a tethering terminal is activated through a USB cable, a random IP address is transmitted to the connected tethering terminal, and tethering is transmitted from the tethering terminal. When receiving a connection request signal, a tethering providing terminal that compares the IP address of the tethering using terminal with an arbitrary IP address and generates an event regarding whether or not the corresponding tethering using terminal is connected, and the tethering providing terminal. It includes a tethering terminal that transmits a tethering connection request through RNDIS (Remote NDIS) using a random IP address received from.

When providing USB tethering, the tethering terminal can be converted from a USB host to a USB device.

The tethering providing terminal detects a communication unit that performs data transmission and reception with the tethering terminal, and a tethering terminal connected through a USB cable using the communication unit, and assigns a random IP address to the detected tethering terminal. When detecting a tethering connection request signal generated from a tethering terminal, it may include a control unit that detects the IP address of the tethering terminal that transmitted the tethering connection request signal.

The control unit may compare the detected IP address of the tethering terminal with a random IP address, and if they match, generate a tethering connection event.

When a tethering connection is performed between the tethering using terminal and the tethering providing terminal, the tethering using terminal may be converted to a client socket, and the tethering providing terminal may be converted to a server socket.

The control unit, while the tethering using terminal and the tethering providing terminal are connected by tethering, uses the IP address of the tethering using terminal to connect to another server included in the tethering using terminal as a client and send data. Can send and receive.

In addition, according to an embodiment of the present invention, the method of providing a USB tethering service using a USB tethering service providing system is such that when the connection with the tethering using terminal is activated through a USB cable, the connected tethering using terminal transmitting a random IP address to the tethering terminal, transmitting a tethering connection request through RNDIS (Remote NDIS) using the received random IP address, and transmitting a tethering connection request from the tethering using terminal. When receiving a tethering connection request signal, the method includes comparing the IP address of the tethering terminal with an arbitrary IP address and generating an event regarding whether the corresponding tethering terminal is connected.

In this way, according to an embodiment of the present invention, a random IP address is provided to a tethering terminal that wants to use USB tethering, and the tethering connection status of the tethering terminal is determined using the provided random IP address. and can provide event alarms according to USB connection and disconnection.

Figure 1 is an example diagram illustrating a state in which a conventional tethering providing terminal and a tethering using terminal are connected using a USB cable.
Figure 2 is a configuration diagram for explaining a USB tethering service providing system according to an embodiment of the present invention.
Figure 3 is a configuration diagram for explaining a tethering provision terminal according to an embodiment of the present invention.
Figure 4 is a flowchart illustrating a method of providing a USB tethering service using a USB tethering service providing system according to an embodiment of the present invention.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the attached drawings. In this process, the thickness of lines or sizes of components shown in the drawing may be exaggerated for clarity and convenience of explanation.

Additionally, the terms described below are terms defined in consideration of functions in the present invention, and may vary depending on the intention or custom of the user or operator. Therefore, definitions of these terms should be made based on the content throughout this specification.

Hereinafter, the USB tethering service providing system according to an embodiment of the present invention will be described in more detail using FIG. 2.

Figure 2 is a configuration diagram illustrating a USB tethering service providing system according to an embodiment of the present invention.

As shown in FIG. 2, the USB tethering service providing system according to an embodiment of the present invention consists of a tethering providing terminal 100 and a tethering using terminal 200.

First, the tethering providing terminal 100 is capable of direct connection to a communication network and provides a tethering function. When the tethering providing terminal 100 obtains the identification information of the tethering using terminal 200, it automatically activates the tethering function and provides a tethering service to the tethering using terminal 200.

Here, the tethering providing terminal 100 may be a mobile communication device, an information communication device, a multimedia device, a wired terminal, a fixed terminal, and an IP (Internet Protocol) terminal. In particular, the tethering terminal 100 according to an embodiment of the present invention supports various mobile communication specifications such as mobile phones, Portable Multimedia Players (PMPs), Mobile Internet Devices (MIDs), Smart Phones, and information and communication devices. Includes a mobile terminal.

Additionally, the tethering use terminal 200 represents a terminal that cannot directly access the communication network but can indirectly access the communication network through the tethering providing terminal 100 that provides a tethering function. The tethering use terminal 200 includes a tethering providing terminal 100 and Bluetooth, infrared, Zigbee, ultra wide band (UWB), near field communication (NFC), and Wi-Fi. ) Communication can be performed using a communication method. Additionally, the tethering-using terminal 200 may communicate with the tethering-providing terminal 100 using a wired cable connection method such as a USB cable.

Here, the tethering terminal 200 includes a laptop computer, a desktop computer, etc.

Meanwhile, when tethering is provided while the tethering providing terminal 100 and the tethering using terminal 200 are connected using a USB cable, the tethering providing terminal 100 is connected to a USB device ( device).

Then, the tethering providing terminal 100 cannot access the internal ARP (Address Resolution Protocol) and therefore cannot check the IP address of the tethering using terminal 200 connected through tethering.

Therefore, the tethering providing terminal 100 in the present invention operates like a DHCP (Dynamic Host Configuration Protocol) server to assign a random IP address to the tethering using terminal 200 connected through a USB cable, and to use the assigned IP address. You can use this to check the tethering connection status of the tethering terminal 200.

Figure 3 is a configuration diagram for explaining a tethering provision terminal according to an embodiment of the present invention.

As shown in Figure 3, according to an embodiment of the present invention The tethering providing terminal 100 includes a communication unit 110 and a control unit 120.

First, the communication unit 110 performs data transmission and reception with the tethering terminal 200.

The communication unit 110 detects a tethering terminal 200 connected through a USB cable and performs communication with the connected tethering terminal 200.

Then, the control unit 120 generates a random IP address and transmits the generated IP address to the tethering terminal 200 connected through a USB cable. When a tethering connection request signal is generated from the tethering terminal 200 that has received a random IP address, the control unit 120 extracts the IP address of the tethering terminal 200 and combines the extracted IP address with the provided random IP address. An event regarding whether the tethering terminal 200 is connected is generated by comparing the IP addresses of .

When the tethering providing terminal 100 and the tethering using terminal 200 are connected by tethering, the control unit 120 uses a random IP address to perform communication with the connected tethering using terminal 200.

Hereinafter, a method of providing a USB tethering service using a USB tethering service providing system according to an embodiment of the present invention will be described in more detail using FIG. 4.

Figure 4 is a flowchart illustrating a method of providing a USB tethering service using a USB tethering service providing system according to an embodiment of the present invention.

As shown in FIG. 4, the tethering providing terminal 100 according to an embodiment of the present invention detects the tethering using terminal 200 connected through a USB cable (S410).

To explain this again, when the user connects the tethering providing terminal 100 and the tethering using terminal 200 using a USB cable, the communication unit 110 detects the tethering using terminal 200 connected through the USB cable. do.

When the tethering terminal 200 is detected in step S410, the tethering providing terminal 100 generates a random IP address and delivers the random IP address to the connected tethering terminal 200 (S420).

When the tethering providing terminal 100 and the tethering using terminal 200 are connected through a USB cable, the tethering providing terminal 100 is converted from a USB host to a USB device. Then, the control unit 120 operates like a DHCP (Dynamic Host Configuration Protocol) server to generate a random IP address. Then, the generated random IP address is delivered to the tethering terminal 200 through the communication unit 110.

Meanwhile, the control unit 120 matches and stores the generated random IP address and the tethering terminal 200 that receives the random IP address.

In the state in which the IP address is received, the tethering using terminal 200 transmits a tethering connection request signal to the tethering providing terminal 200 (S430).

To elaborate, the tethering terminal 200 transmits a tethering connection request signal through a link provided by RNDIS (Remote NDIS). At this time, the tethering connection request signal includes a random IP address provided by the tethering providing terminal 100.

The tethering providing terminal 100, which has received the tethering connection request signal, extracts the IP address included in the tethering connection request signal and determines whether the tethering using terminal 200 is connected to tethering using the extracted IP address. Judge (S440).

To elaborate, the control unit 120 extracts the IP address included in the received tethering connection request signal and compares the extracted IP address with a previously stored arbitrary IP address.

And, if the extracted IP address matches the previously stored IP address as a result of comparison, the control unit 120 determines that the tethering terminal 200 is connected by USB tethering. Then, the control unit 120 generates a corresponding event.

Meanwhile, when a tethering connection is performed between the tethering providing terminal 100 and the tethering using terminal 200, the tethering using terminal 200 is converted to a client socket, and the tethering providing terminal 100 ) is converted to a server socket.

Then, the tethering providing terminal 100 transmits and receives data with the corresponding tethering using terminal 200 using the extracted IP address (S450).

To explain this again, the tethering providing terminal 100 connects as a client to another server included in the tethering using terminal 200 using the IP address extracted in step S440. Then, when the connection is completed, the tethering providing terminal 100 transmits and receives data to and from the tethering using terminal 200.

In this way, according to an embodiment of the present invention, a random IP address is provided to a tethering terminal that wants to use USB tethering, and the tethering connection status of the tethering terminal is determined using the provided random IP address. and events may occur due to USB connection and disconnection.

The present invention has been described with reference to the embodiments shown in the drawings, but these are merely illustrative, and those skilled in the art will understand that various modifications and other equivalent embodiments are possible therefrom. will be. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the patent claims below.

100: Tethering provision terminal
110: Department of Communications
120: control unit
200: Terminal using tethering

Claims (11)

When the connection with the tethering terminal is activated through a USB cable, a random IP address is transmitted to the connected tethering terminal, and when a tethering connection request signal is received from the tethering terminal, the tethering terminal A tethering providing terminal that compares an IP address with a random IP address and generates an event regarding whether or not the corresponding tethering terminal is connected, and
It includes a tethering use terminal that transmits a tethering connection request through RNDIS (Remote NDIS) using a random IP address received from the tethering providing terminal,
The tethering providing terminal is,
A communication unit that performs data transmission and reception with the tethering terminal, and
Using the communication unit, a tethering terminal connected through a USB cable is detected, a random IP address is transmitted to the detected tethering terminal, and a tethering connection request signal generated from the tethering terminal is detected. It includes a control unit that detects the IP address of the tethering terminal that transmitted the tethering connection request signal,
The control unit,
Compares the detected IP address of the tethering terminal with a random IP address, and if they match, generates a tethering connection event,
When a tethering connection is performed between the tethering using terminal and the tethering providing terminal,
The tethering using terminal is converted to a client socket, and the tethering providing terminal is converted to a server socket,
A USB tethering service providing system that converts from a USB host to a USB device when the tethering terminal is provided with USB tethering. delete delete delete delete According to paragraph 1,
The control unit,
When the tethering using terminal and the tethering providing terminal are connected by tethering, a USB device connects as a client to another server included in the tethering using terminal using the IP address of the tethering using terminal to transmit and receive data. Dering service provision system. In the method of providing USB tethering service using a USB tethering service provision system,
The tethering providing terminal transmits a random IP address to the connected tethering terminal when the connection with the tethering terminal is activated through a USB cable;
The tethering providing terminal transmits a tethering connection request through RNDIS (Remote NDIS) using the random IP address received,
When receiving a tethering connection request signal from the tethering terminal, comparing the IP address of the tethering terminal with an arbitrary IP address and generating an event regarding whether the corresponding tethering terminal is connected, and
When a tethering connection is performed between the tethering using terminal and the tethering providing terminal, the tethering using terminal is converted to a client socket, and the tethering providing terminal is converted to a server socket to establish a tethering connection. Includes,
The step of generating the event is,
When the tethering providing terminal detects a tethering connection request signal generated from a tethering using terminal, it detects the IP address of the tethering using terminal that transmitted the tethering connection request signal,
A method of providing a USB tethering service that compares the detected IP address of the tethering terminal and a random IP address and, if they match, generates a tethering connection event. delete delete delete In clause 7,
The step of establishing the tethering connection is,
When the tethering using terminal and the tethering providing terminal are connected by tethering,
A method of providing a USB tethering service in which data is transmitted and received by connecting as a client to another server included in the tethering terminal using the IP address of the tethering terminal.