KR20070119129A - Method of application transfer using device discovery protocol in home network system - Google Patents

Abstract

An application transferring method using a device discovery protocol within a home network system is provided to be capable of transferring an application by conducting a device discovery and control process in an intuitive way, thereby transferring the application even when device lists are huge as realizing user-friendly application mobility. A control device(40) turns toward an originating device(21), and demands context(S11,S12). The originating device(21) provides the context to the control device(40)(S13). The control device(40) indicates a target device(22), and demands device information on the target device(22)(S14). The target device(22) provides the device information including an IP(Internet Protocol) address(S15). The control device(40) sends an activation command to the target device(22)(S16). The target device(22) transmits a port number as approving of activation(S17). The control device(40) transmits a registration and invite message to a server(10)(S18). The server(10) transmits an approval message to the control device(40)(S19). The server(10) transfers an application to the target device(22), and the target device(22) performs the transferred application as communicating with the server(10)(S20).

Description

Method of application transfer using device discovery protocol in home network system}

1 is a conceptual diagram of an application transfer method in a home network system according to an embodiment of the present invention;

FIG. 2 is a flow chart illustrating a method for transferring an application in the home network system shown in FIG. 1.

3 is a conceptual diagram of an application transfer method in a home network system according to another embodiment of the present invention;

FIG. 4 is a procedure diagram showing a method for transferring an application in the home network system shown in FIG.

Description of the main parts of the drawing

100, 200: home network system 10: server

21: cell phone 22: laptop

23: TV 24: Refrigerator

30: wired or wireless network 40: controller

50: radio link layer 60: application

The present invention relates to a home network protocol, and more particularly, to a method of transferring an application between devices using a device discovery protocol in a home network system, in a user-friendly and intuitive manner. It is about.

In recent years, home network technologies that can make life at home more convenient have come into the spotlight. Unlike traditional home automation technology that automatically controls a variety of electronic devices in the home, home network technology is an advanced system for integrating and managing networks between home electronic devices. The home network system connects various client devices such as home appliances, PCs, and IT products to server devices by wired / wireless communication to control and manage them integrally.

Today's wired and wireless communications services are being integrated based on Internet Protocol (IP). One technique for this is Voice over IP (VoIP) technology. VoIP technology implements a variety of next generation Internet application services, including Internet telephony services and multimedia messaging services. Session Initiation Protocol (SIP) technology is used as a protocol for supporting VoIP. SIP is an application layer control protocol for establishing, modifying and terminating sessions or calls for multimedia communication such as video and voice. Recently, IMS (IP Multimedia Subsystem) has attracted attention as a system for providing a multimedia service using such a protocol. IMS integrates voice and data services into a single structure and delivers them to devices fixed on the network or to mobile devices.

The introduction of IMS and SIP laid the foundation for moving applications between different heterogeneous devices on the network. For example, it is possible to seamlessly transfer a video conferencing application to a laptop or TV using a mobile phone as a terminal. This is often called application mobility.

However, in the related art, when selecting a device (hereinafter, referred to as a target device) to which the application is to be transferred from the device on which the application is running (hereinafter, referred to as an originating device), all devices in the house are selected. You must select the desired device from the list included. In the prior art, it is not possible for a user to directly point and select 'low devices', so the devices listed in the list must be searched individually to select one of them. Therefore, there is a disadvantage that it is very inconvenient to use when the device list is large.

The device list contains the IP address information of each device, allowing IMS to register with the server. The problem is that the current IMS alone makes it difficult to implement user-friendly application mobility. This is because the IMS typically only deals with the device after the device is selected and not the process of selecting the device.

Accordingly, an object of the present invention is to provide a method for implementing user-friendly application mobility in a home network system.

Another object of the present invention is to provide a protocol capable of intuitively performing a device discovery and control process in a home network system.

Another object of the present invention is to provide a method for transferring an application between devices in a home network system.

In order to achieve these objects, the present invention provides an application transfer method using a device discovery protocol in a home network.

In the application transfer method according to the present invention, a plurality of client devices are connected to a server, one of the client devices is a current device on which the application is running, and one of the remaining client devices is a destination device to which the application is to be transferred. This is how to do it.

The method of the present invention comprises the steps of the control device pointing towards the current device and requesting a context from the current device, the current device providing a context to the control device in response to the context request, and the control device pointing to the destination device Requesting device information for the device, providing the device information, including the IP address, to the control device by the target device, sending a command to activate the device to the target device, and authorizing the activation of the device to the controller. Transmitting the port number together with the controller, sending the registration and invitation message to the server using the IP address, context, and port, sending the authorization message to the controller, and the server Moving the application to the device and executing the migrated application while the target device communicates with the server.

In the application transfer method of the present invention, the step of transmitting the registration and invitation message includes the step of the control device registering the SIP with the IP address of the target device, or the control device sending the context to the target device and the target device directly SIP. It may include the step of registering.

In the application transfer method of the present invention, the control device is preferably a device capable of designating a location by pointing the target device, for example, a remote controller.

In addition, the application transfer method according to the present invention includes the steps of the current device pointing to the target device and requesting device information on the target device, providing the device information including an IP address to the current device, and The device sends an activation command to the target device, the target device sends a port number with the activation approval to the current device, and the current device sends a registration and invitation message to the server using the IP address, context, and port. And the server sending the approval message to the current device, and the server moving the application to the target device and executing the transferred application while the target device communicates with the server.

In the application transfer method of the present invention, the step of transmitting the registration and invitation message includes the current device registering the SIP with the IP address of the destination device, or the current device sending the context to the destination device and the destination device directly SIP. This may include registering.

In the application transfer method of the present invention, the current device is preferably a device capable of pointing to a target device and may be, for example, a mobile phone.

Example

Hereinafter, with reference to the accompanying drawings will be described in detail an embodiment of the present invention.

In describing the embodiments, descriptions of technical contents which are well known in the technical field to which the present invention belongs and are not directly related to the present invention will be omitted. This is to more clearly communicate without obscure the subject matter of the present invention by omitting unnecessary description.

1 is a conceptual diagram of an application transfer method in a home network system according to an embodiment of the present invention.

Referring to FIG. 1, in the home network system 100, various client devices such as a mobile phone 21, a notebook 22, a TV 23, a refrigerator 24, and the like are connected to a server 10 via a wired / wireless network 30. It is connected and configured. In addition, a control device 40 such as a remote controller is connected via the wireless link layer 50. In such a configuration, a device (hereinafter, referred to as an originating device) on which the application 60 is currently operating is referred to as a mobile phone 21 for convenience, and a target device (hereinafter, referred to as a destination device) to which the application 60 is to be transferred. target device) is referred to as a notebook 22 for convenience.

The client devices 21, 22, 23, and 24 of FIG. 1 are merely examples, and various information communication devices, home appliances, and AV devices may be applied. Wired and wireless network 30 includes, for example, wired network technologies such as Ethernet, home PNA, power line communications (PLC), IEEE 1394, IEEE 802.17, Bluetooth, ultra wide band (UWB), IEEE 802.15.3 (HR Wireless network technologies such as WPAN, IEEE 802.15.4 (LR WPAN), IEEE 802.11 (WLAN), and the like.

The control device 40 is compact and the user can directly point to the target device to designate the position. In the present embodiment, the remote control is the control device 40, but the present device itself may be a control device as in the following embodiment, and in some cases, the target device may also serve as the control device. The wireless link layer 50 may be constructed using directional low power, low speed wireless communication technology within a range of several tens of meters. For example, infrared communication (IrDA), zigbee, and Bluetooth may be used.

In such a home network system 100, when a user wants to transfer an application 60 running on a predetermined current device 21 to a new client device, that is, a specific target device 22, the user wants to move the target device ( 22) direct to the control device 40 to perform the application transfer.

FIG. 2 is a flowchart illustrating an application transfer method in the home network system illustrated in FIG. 1.

Referring to FIG. 2, the current apparatus 21 performs a predetermined application (eg, a video conference) while communicating with the server 10 (S11). At this time, if you want to move the application to the target device 22, the control device 40 is directed toward the current device 21 by the user's action and requests the context (context) to the current device 21 (S12). The context may be all information related to the application. The current device 21 provides a context to the control device 40 in response to the context request (S13).

Subsequently, the control device 40 points to the target device 22 according to the user's action and requests device description of what device the target device 22 is (S14). The device information may include, for example, the name, type, screen size, and the like of the device. The target device 22 provides the device information including the IP address to the control device 40 (S15).

Subsequently, the control device 40 sends an activation command to the target device 22 (S16). Activation includes the procedure of powering on and performing a login. The target device 22 transmits a port number with an activation acknowledgment to the control device 40 (S17).

Subsequently, the control device 40 transmits a registration cum invite message to the server 10 using the received IP address, context, port, etc. (S18). At this time, the control device 40 registers the SIP with the IP address of the target device 22 or sends the application context to the target device 22 so that the target device 22 directly registers the SIP.

Subsequently, the server 10 transmits an approval message to the control device 40 (S19), and moves the application to the destination device 22. Accordingly, the target device 22 performs the transferred application while communicating with the server 10 (S20).

The application transfer method described above may be similar to the conventional method of turning on all devices with a single integrated remote controller. However, the integrated remote control method differs in that the information on which device is the device is preset in the remote control and sends a command to the target device in one direction, whereas the method of the present invention reads the ID of the target device through bidirectional negotiation. There is.

3 is a conceptual diagram of an application transfer method in a home network system according to another embodiment of the present invention.

Referring to FIG. 3, the home network system 200 according to the present embodiment includes a server 10 and client devices 21, 22, 23, and 24 connected through a wired or wireless network 30. Unlike the above-described embodiment, in the present embodiment, the current device (eg, the mobile phone 21) in which the application 60 is operating is directly used as a control device. Of course, the current device, which can also serve as a control device, must be small so that the user can lift and operate it, and the device can be directly positioned by the user. If these conditions are satisfied, the target device may also serve as a control device, unlike the present embodiment and the above-described embodiment.

In such a home network system 200, when a user wants to transfer an application 60 operating in the current device 21 to a specific target device 22, the user moves the target device 22 to the current device 21. Directly to) to perform the application migration. At this time, the current device 21 executes a device discovery and control protocol on the radio link layer 50.

4 is a flowchart illustrating an application transfer method in the home network system illustrated in FIG. 3.

Referring to FIG. 4, the current device 21 performs a predetermined application while communicating with the server 10 (S31). At this time, if you want to move the application to the target device 22, the current device 21 points to the target device 22 in accordance with the user's actions and requests the device information of the target device 22 (S32). The target device 22 provides the device information including the IP address to the current device 21 (S33).

Subsequently, the current device 21 sends an activation command to the target device 22 (S34), and the target device 22 transmits a port number with the activation confirmation to the current device 21 (S35). The current device 21 transmits a registration and invitation message to the server 10 by using the received IP address, port, and the context it has (S36).

Subsequently, the server 10 transmits the approval message to the current device 21 (S37), and moves the application to the target device 22. Accordingly, the target device 22 performs the transferred application while communicating with the server 10 (S38).

In the foregoing specification and drawings, preferred embodiments of the present invention have been disclosed, and although specific terms have been used, these are merely used in a general sense to easily explain the technical contents of the present invention and to help understanding of the present invention. It is not intended to limit the scope of the invention. It will be apparent to those skilled in the art that other modifications based on the technical idea of the present invention can be carried out in addition to the embodiments disclosed herein.

As described above, in the present invention, when the application currently running on a certain device in a home network system is to be moved to another device, the present invention can intuitively select the target device instead of selecting the target device from the device list. Make sure Therefore, the present invention can intuitively perform the device discovery and control process to transfer the application. Accordingly, the present invention can efficiently transfer an application even if the device list is large, and implement user-friendly application mobility.

Claims (10)

In a home network system in which a plurality of client devices are connected to a server, one of the client devices is a current device on which an application is running, and one of the remaining client devices is a destination device to which the application is to be transferred. Directing a control device towards the current device and requesting a context from the current device; Providing, by the current device, a context to the control device in response to the context request; The control device pointing to the target device and requesting device information for the target device; Providing, by the target device, device information including an IP address to the control device; The control device sending an activation command to the target device; Sending, by the target device, a port number with an activation confirmation to the control device; Transmitting, by the control apparatus, a registration and invitation message to the server using the IP address, the context, and the port; Sending, by the server, an approval message to the control device; And The server moving an application to the target device and the target device communicating with the server to perform a migrated application; Application transfer method in a home network system comprising a. The method of claim 1, The transmitting of the registration and invitation message may include the step of the SIP registration by the control device to the IP address of the target device. The method of claim 1, The step of sending the registration and invitation message includes the step of the control device sending the context to the destination device and the destination device directly registering the SIP. The method according to any one of claims 1 to 3, And the control device is a device capable of designating a location by pointing to the target device. The method of claim 4, wherein And said control device is a remote control. In a home network system in which a plurality of client devices are connected to a server, one of the client devices is a current device on which an application is running, and one of the remaining client devices is a destination device to which the application is to be transferred. The current device pointing to the target device and requesting device information on the target device; Providing, by the target device, device information including an IP address to the current device; The current device sending an activation command to the target device; Sending, by the target device, a port number with an activation confirmation to the current device; Transmitting, by the current device, a registration and invitation message to the server using the IP address, the context, and the port; Sending, by the server, an authorization message to the current device; And The server moving an application to the target device and the target device communicating with the server to perform a migrated application; Application transfer method in a home network system comprising a. The method of claim 6, The transmitting of the registration and invitation message may include the step of the SIP registration by the current device to the IP address of the target device. The method of claim 6, The step of transmitting the registration and invitation message includes the step of the current device sending the context to the target device and the target device directly registering the SIP. The method according to any one of claims 6 to 8, And wherein the current device is a device capable of designating a location by pointing to the target device. The method of claim 9, And the current device is a mobile phone.

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