KR20100116096A - Method and apparatus for using contents of wireless terminal in home network system - Google Patents

Abstract

PURPOSE: A method and an apparatus for using a service of a wireless terminal in a home network system are provided to use an IPTV service provided to a home network with guaranteed QoS(Quality of Service). CONSTITUTION: A home gateway(300) of a home network extracts bandwidth information from a remote access request of a wireless terminal(100). An in-home content storage device(400) sets filtering parameters about the wireless terminal through the bandwidth information. The in-home content storage device classifies content of a bandwidth narrower than a preset bandwidth by the filtering parameter. The in-home content storage device transmits a generated content list to the wireless terminal.

Description

TECHNICAL AND APPARATUS FOR USING CONTENTS OF WIRELESS TERMINAL IN HOME NETWORK SYSTEM}

The present invention relates to a method and apparatus for using a content of a wireless terminal in a home network system. More specifically, the present invention relates to a technique for using IPTV services that can be used inside a home network securely without deterioration of service through a wireless terminal outside the home network.

Due to the proliferation of home networks, existing PC (Personal Computer) -oriented network environments are gradually expanding to include home appliances that use various sub-network technologies. Therefore, UPnP (Universal Plug and Play) technology has been proposed as a need for a technology that can network these home appliances in a unified manner using the IP protocol. UPnP is a universal standard protocol that allows network devices in a home network to interoperate with each other. UPnP is composed of a controlled device (or Controlled Device (CD)), which is a home network device connected to an IP-based home network and controlled, and a control point (or Control Point, CP), which is a device for controlling the controlled device. do.

Hereinafter, a configuration diagram of the UPnP device architecture 1.0 standard (hereinafter, referred to as 'PnP Device Architecture 1.0 standard' will be described with reference to the drawing shown in FIG. 1.

The UPnP Device Architecture 1.0 standard, shown in Figure 1, is based on a distributed and open networking architecture, enabling each appliance in a home network to be peer-to-peer networking instead of centrally managed. .

In general, in a home network middleware, a UPnP device may model the service as an action and a state variable, and the control point may automatically discover the UPnP device and then use the service.

UPnP device discovery in accordance with UPnP Device Architecture 1.0 occurs in a distributed and open networking fashion using IP multicast within the home network. However, since the IP multicast service cannot be guaranteed to be normally performed in the Internet range, the control of UPnP devices using information obtained through UPnP device discovery is difficult to expect high reliability over the Internet.

Accordingly, in order to be able to operate as if the UPnP device or control point is physically separated from the home network, the UPnP remote access architecture (hereinafter, 'PnP Remote Access Architecture') has been proposed. . The UPnP Remote Access Architecture defines the Remote Access Server (105, Remote Access Server) device in the home network and the Remote Access Client (109, Remote Access Client) device in the remote network. Then set up a Virtual Private Network (VPN) 107 for remote access between the two. The remote access client 109 located in the remote network then uses the content stored on the device in the home as if it were in the home. It is assumed that the remote access server 105 is connected to the indoor content storage device 101 and the UPnP 103.

2 is a flowchart illustrating a method for accessing a UPnP remote access service using a conventional IMS network.

The wireless terminal 100 located in the remote network is a terminal that wants to receive home service by accessing a home network. To this end, the wireless terminal 100 transmits a remote access request message for remote access to the gateway 300 having the remote access server in the home network using the SIP protocol in step 220. In step 230, the home gateway 300 transmits a response message to the remote access request message to the wireless terminal 100. In step 240, a communication path between the wireless terminal 100 and the home gateway 300 is set up for a remote connection defined by UpnP. According to an embodiment of the present invention, the communication path may be set up using a private network (VPN). Hereinafter, it is assumed that the communication path is a private network (VPN).

In operation 250, the wireless terminal 100 directly accesses a device 400 having content in the home (or an indoor content storage device) using a private network connected in operation 240 to provide a content list and corresponding additional information. Request (Contents Selection UPnP CDS). Then, the indoor content storage device 400 transmits the content list requested by the wireless terminal 100 and its additional information to the wireless terminal 100 in step 260. In operation 270, the wireless terminal 100 transmits an UPnP action to the indoor content storage device 400 so that the user can select and play the content. In step 280, the content selected in step 270 is transmitted.

By the way, when the wireless terminal 100 is provided with the indoor content through the remote access through the conventional process as described above, since the VPN is set up between the wireless terminal 100 and the home gateway 300 before the user's content selection, If the wireless terminal 100 wants to receive content larger than the bandwidth of the set-up VPN, there is a possibility that the quality of service (QoS) will be degraded.

The present invention has been made to solve the above problems, even when trying to use the content and services in the home remotely through a wireless terminal (Quality of Experience, QoE) or quality of service (QoE) Its purpose is to provide a way to use services without deterioration.

In order to achieve the above object, a process of requesting a remote access including a bandwidth available to a user through a wireless terminal, a process of extracting bandwidth information from a gateway in the house, and a value of the bandwidth that can be provided in the house; The process of comparing, transmitting the last available bandwidth value to the devices with content in the home, storing the value and executing automatic filtering, and accessing the wireless device remotely to the indoor device storing the content The process of requesting a content list and the process of extracting only content that can be provided without deterioration of quality of service (QoS) and transmitting it to the wireless terminal are defined. In addition, we defined a process that allows operators to select and use services that can be used without deteriorating quality of service (QoS) through additional billing to users.

Accordingly, in the method of using home network contents of a wireless terminal located outside the home network of the present invention, when the wireless terminal requests a remote access, the home gateway of the home network extracts bandwidth information from the remote access request, and the home network Bandwidth information delivery step of delivering to the indoor content storage device of the, The content parameter setting step of receiving the bandwidth information to set the filtering parameter for the wireless terminal, When the content list request of the wireless terminal, A content list generating step of classifying content of a content equal to or less than a preset bandwidth by using a filtering parameter set for the wireless terminal and generating a content list, and the indoor content storage apparatus displaying the generated content list. Characterized in that it comprises a content list transmission step of transmitting to the radio terminal.

The indoor content storage device may include a method of receiving a filtered content list or a list of all contents according to a request of the wireless terminal for a filtered content list according to a set parameter.

In addition, a content storage device of a home network that provides content to a wireless terminal located outside the home network of the present invention includes a content storage area for storing the content and a filtering parameter storage area for setting and storing bandwidth information of the wireless terminal as a filtering parameter. A filtering parameter extractor for checking a device address of the wireless terminal and extracting a filtering parameter corresponding to the wireless terminal from the filtering parameter storage area when the content list is requested of the wireless terminal; And a content list generator configured to classify content having a predetermined bandwidth or less in the content storage area and generate a content list.

According to the present invention, an IPTV user can use an IPTV service provided to a home network (in-house) even in a remote network (outside home) while ensuring quality of service (QoS). In addition, IPTV service providers not only provide services to share IPTV services provided on the home network outside the home, but also enable the service providers to select services that can be used without deterioration of quality of service (QoS) through additional billing to users. Providing a way to make it possible to increase user satisfaction can generate new profits.

Hereinafter, with reference to the accompanying drawings a detailed description of preferred embodiments of the present invention will be described in detail. It should be noted that the same components in the figures represent the same numerals wherever possible.

In addition, specific details are set forth in the following description, which is provided to help a more general understanding of the present invention, and it is obvious to those skilled in the art that the present invention may be practiced without these specific details. Will do. In the following description of the present invention, detailed descriptions of related well-known functions or configurations will be omitted when it is determined that the detailed descriptions may unnecessarily obscure the subject matter of the present invention.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments will be presented in the present invention for achieving the above-described technical problem. In addition, for convenience of description of the present invention, names of entities defined by UPnP, which is a standard for in-home communication, or TISPAN (Telecommunication and Internet converged services and protocols for advanced networking) and OIPF (Open IPTV Forum) Although used identically, these standards and names do not limit the scope of the present invention, but are of course applicable to systems having similar technical backgrounds.

<First Embodiment>

A description of Embodiment 1 of the basic operation of the present invention is possible through FIG. 3 is a flowchart illustrating a process of accessing a wireless terminal 100 in a home and using contents in the home according to the first embodiment of the present invention.

First, in step 305, the wireless terminal 100 outside the home transmits a remote access request message for the remote access to the home gateway 300 in the home to the home gateway 300. In this case, the remote access request message may be a Session Initiation Protocol (SIP) invite message. In this case, the remote access request message transmitted by the wireless terminal 100 may include bandwidth information (that is, bit rate) predetermined according to the user's subscription information or the operator's policy. In this embodiment, 384 kbps used in the embodiment of TISPAN WG5 is illustrated as the bandwidth.

According to an embodiment of the present invention, in step 305, the remote access request message transmitted from the wireless terminal 100 is transmitted to the service provider 200, and the authentication and the extraction of user information are performed. It may be delivered to the gateway 300.

The remote access request message transmitted from the wireless terminal 100 is received through the message receiver 301 of the home gateway 300. Then, the QoS Cordinator 302 of the home gateway 300 receives the remote access request message received through the message receiver 301 in step 310, extracts the bandwidth information, and converts the bandwidth information into UPnP information. . That is, the quality of service coordinator 302 converts the SIP message format to the UPnP message format.

The quality of service coordinator 302 includes, in step 320, the bandwidth information and the IP address of the wireless terminal 100 that made the remote access request in step 305, and performs an action defined by UPnP protocol. Send (Send UPnP Message) to (400). In this case, an embodiment of an action between the home gateway 300 and the indoor content storage device 400 applied in step 320 is defined in Table 1 below. It is clear that this is only an embodiment and can be defined in other ways.

ModifyCDSaction ()

This action modify CDS action which will be sent later from the device throgh UPnP RA connection. When a device receives this action, the device has to store the arguments inside.

RAdeviceIP:  The IP of the device that request RA connection with QoS guarantee

Bwlimit:  The bandwidth value of the RA connection

[Table 1] Argument definition of action delivering restriction information to guarantee service quality in house

Argument Direction Related statevariable RAdeviceIP IN A_ARG_TYPE_Filter Bwlimit IN A_ARG_TYPE_Filter

In operation 330, the indoor content storage device 400 stores the received information as shown in Table 2 and stores the bandwidth as an automatic filtering value.

[Table 2] Information for guaranteeing remote access service of wireless terminal

Device IP Filter 103.204.134.241 Filter (res @ bitrate <384)

Meanwhile, in step 332, the message receiving unit 301 of the home gateway 300 transmits a response message to the wireless terminal 100 in response to the remote access request message requested in step 305. Then, in step 334, a private network (VPN) is set up between the wireless terminal 100 and the home gateway 300 due to the transmission of the response message.

When the private network is set up, in step 340, the wireless terminal 100 accesses the indoor content storage device 400 through the private network established in step 334 and transmits a contents browse using UPnP CDS. Can be. In addition, when transmitting a content list request message in step 340, a Filtered contents list parameter for selecting whether to request a filtered content list or an entire unfiltered content list according to a user's selection may be set as shown in the embodiment of Table 3. Can be. If the value of the Filtered contents list parameter is True, it means a request for a filtered content list. If False, it means a request for all content lists.

[Table 3] Information for requesting filtered content list ( Filtered contents list parameter)

Parameter Value (Boolean) Filtered contents list True / False ... ...

According to an embodiment of the present invention, the content list request message uses a browse method defined by UPnP.

When the wireless terminal 100 accesses the indoor content storage device 400, the indoor content storage device 400 receives the IP address of the wireless terminal 100 that has transmitted the content list request message of step 340 in step 350. Check it. In addition, according to an embodiment of the present invention, the indoor content storage device 400 may additionally check the Filtered contents list parameter shown in Table 3 in the content list request message. In operation 360, the indoor content storage device 400 checks the bandwidth set corresponding to the IP address of the wireless terminal 100, and checks the bit rate among the contents available in the indoor content storage device 400. Filter content smaller than bandwidth. If the Filtered contents list parameter is not set, the filtered contents list is basically transmitted. In operation 370, the indoor content storage device 400 transmits a content list response message including the filtered content list or the content list for all contents to the wireless terminal 100 according to the value of the Filtered contents list parameter. do. In step 380, the wireless terminal 100 selects the content to execute by viewing the list of the transmitted content.

Through the above steps, the user receives only a list of contents stored in the content storage device 400 in the home using the wireless terminal 100 and has a bandwidth smaller than the preset bandwidth, and selects and reproduces the contents in the home. The contents within can be accessed and used without deterioration of the service.

Second Embodiment

 FIG. 4 is a flowchart illustrating a process for accessing a home by using a wireless terminal 100 located outside the home according to a second embodiment of the present invention.

In the second embodiment, the indoor content storage device 400 also delivers content information whose quality of service (QoS) is not guaranteed with resources currently allocated to a user who requests remote access from outside the home. The user can then select additional billing to increase bandwidth allocation to ensure the quality of service for content that is not guaranteed for existing services.

Steps 305 to 350 shown in FIG. 4 are the same as steps 305 to 350 of the process of the first embodiment, so detailed description thereof will be omitted.

In step 410, the indoor content storage device 400 separates content having a bit rate less than or equal to the bit rate transmitted in step 305. In operation 420, the indoor content storage device 400 transmits a content list response message corresponding to the content list request message to the wireless terminal 100. The content list response message according to the second embodiment of the present invention includes a content list currently available as a resource (ie, the bit rate of the content is 384 kbps or less) and each of the content lists available at an additional cost.

Then, in step 430, the user's wireless terminal 100 classifies and displays the content list available as the currently allocated resource and the available content list at an additional cost. In other words, in the first embodiment, the user was not able to use content having a bandwidth larger than the currently allocated resource, but according to the second embodiment, the user paid for an additional cost and additionally allocated the bandwidth to previously unavailable. The content is available.

According to the user's selection, the user may, at step 440, pay an additional fee and select available services (content) via the wireless terminal 100. Then, in step 450, the wireless terminal 100 transmits a related additional bill payment request message (SIP message) to a service provider (service provider) 200 so as to pay an additional bill necessary for using the content selected by the user. , Pay an additional charge.

In operation 460, the wireless terminal 100 transmits a bandwidth change request message (SIP reinvite for session modification) for requesting modification of an existing session for additional bandwidth allocation for the content selected in operation 440. Send to. Then, in step 470, the home gateway 300 receives the bandwidth change request message and transmits a response message to the wireless remote terminal 100. Then, in step 480, between the wireless terminal 100 and the home gateway 300, a private network having a bandwidth for which additional modification is requested is set up to use the content selected by the user without service degradation.

Third Embodiment

FIG. 5 is a flowchart illustrating a process of accessing a home by using a wireless terminal 100 located outside a home according to a third embodiment of the present invention.

In the third embodiment, a network device or service for providing an IPTV service together with an IMS is included. The service provider 200 illustrated in FIG. 5 performs a remote access service subscription procedure of the user of the wireless terminal 100 and manages user information such as screen size, resolution, and codec of the wireless terminal 100. It also performs user authentication when requesting service.

In the third embodiment, through the help of the service provider 200, the content is filtered based on the device capability of the wireless terminal 100 in addition to the quality of service (QoS) proposed in the first or second embodiment. In addition to quality (QoS), the quality of experience (QoE) of the user can be guaranteed. The detailed procedure of the third embodiment that is the embodiment is as follows using FIG.

In step 505, the wireless terminal 100 transmits a filtering setup request message (RA service request) to the service provider 200. In step 510, the service provider 200 performs user authentication on the wireless terminal 100 that has requested the filtering setting and collects user information stored at the time of subscription. According to the third embodiment of the present invention, the user information may include bandwidth information (that is, bit rate) predetermined according to the user's subscription information or the operator's policy.

 In operation 515, the service provider 200 transmits a filtering setting request message including user information to the message receiving unit 301 of the home gateway 300. In step 520, the message receiving unit 301 transmits the filtering setting response message 520 to the service provider 200 in response to the received filtering setting request message. The service provider 200 transmits the received filtering setting response message to the wireless terminal 100 in step 525.

Since the wireless terminal 100 confirms that normal service use is possible, in step 530, a remote access request message (SIP INVITE message) for the remote access service is transmitted to the message receiving unit 301 of the home gateway 300 through the IMS network. In step 535, the wireless terminal 100 receives a response message 535 thereto.

Meanwhile, in step 515, the message receiving unit 301 that receives the remote access service request message from the service provider 200 sends the user information included in the received remote access service request message to the quality of service coordinator 302 in step 540. To pass. In step 550, the quality of service coordinator 302 converts user information into UPnP information, and transmits the UPnP message including the user information and the user IP address to the indoor content storage device 400. In step 555, the indoor content storage device 400 classifies a user by the received user IP address, and sets a filtering value by using the received user information.

The above steps 520 to 535 and the above steps 540 to 555 may be independently performed.

On the other hand, since the wireless terminal 100 has been allocated the available band through the remote access request message (SIP INVITE) and the response in step 530 and step 535, in step 560, the home gateway 300 and UPnP You can set up a private network (VPN) for remote access.

By performing the above procedure, the wireless terminal 100 completes the procedure for receiving information from the indoor content storage device 400 in the home network so that the home network service can be used through UPnP.

In step 565, the wireless terminal 100 transmits a content browse using UPnP CDS action to the indoor content storage device 400 to check the content list stored in the indoor content storage device 400. The indoor content storage device 400 checks the IP address of the wireless terminal 100 that transmitted the private content list request message in step 570, and uses the content available to the user who requested the service using the filtering parameters set for each user in step 575. Only the content is generated by generating a content list response message, and it is transmitted 580 to the wireless terminal 100 in step 580. The wireless terminal 100 may check only the contents available to the user 100 among the contents list of the indoor content storage device 400, and selects the contents to be used and requests a service 585.

6 is a block diagram illustrating an internal structure of an indoor content storage device 400 according to an embodiment of the present invention. The indoor content storage device 400 according to the embodiment of the present invention includes a storage unit 610 and a control unit 640.

The storage unit 610 includes a filtering parameter storage area 620 and a content storage area 630. The filtering parameter storage area 620 sets and stores bandwidth information of the wireless terminal as a filtering parameter. The content storage area 630 stores content to be provided to the wireless terminal.

The controller 640 controls the overall operation of the indoor content storage device 400. According to an embodiment of the present invention, the control unit 640 further includes a filtering parameter extracting unit 650, a content list generating unit 660, and a UPnP Browse Action changing unit 670.

The filtering parameter extracting unit 650 checks the device address of the wireless terminal when requesting a content list of the wireless terminal, and performs a filtering parameter corresponding to the wireless terminal in the filtering parameter storage area.

The content list generator 660 generates a content list by classifying content having a predetermined bandwidth or less in the content storage area 630 using the extracted filtering parameter.

According to the second embodiment of the present invention, the content list generating unit 660 classifies the content list for the content below the preset bandwidth for the wireless terminal and the content list for the content above the preset bandwidth, respectively. Can be generated.

The UPnP Browse action changing unit 670 changes the UPnP Browse action.

7 is a flowchart illustrating an operation sequence of an indoor content storage device that provides contents to a wireless terminal 100 according to an exemplary embodiment of the present invention.

First, the indoor content storage device 400 receives the IP address and bandwidth of the wireless terminal 100 from the home gateway 300 in step 700. In step 710, the indoor content storage device 400 stores a filtering parameter, that is, a bit rate value, of an IP address of the wireless terminal 100.

In operation 720, the indoor content storage device 400 receives a content list request message (UPnP Browse action) from the wireless terminal 100. The indoor content storage device 400 checks the IP address of the wireless terminal 100 that has transmitted the content list request message (UPnP action) in step 730, and advances the IP address of the wireless terminal 100 in step 750. Check if there are any filtering parameters stored in. When the filtering parameter is confirmed, the indoor content storage device 400 applies the stored filtering parameter value by changing the Bowse action of UPnP in step 760. In other words, the indoor content storage device 400 generates a content list by extracting content having a value smaller than a set filtering parameter, that is, a bit rate. The generated content list is transmitted to the wireless terminal 100. In this case, according to the second exemplary embodiment of the present invention, the indoor content storage device 400 may generate a content list for content having a value less than the set bit rate, and a content list for content having a value greater than the set bit rate. You can also create one separately.

On the other hand, if the filtering parameter is not confirmed, the indoor content storage device 400 proceeds to step 770 does not change the UPnP Browse action.

8 is another embodiment of a flowchart illustrating an operation sequence of an indoor content storage device that provides contents to a wireless terminal 100 according to an embodiment of the present invention.

In FIG. 8, the same procedure is performed from steps 710 to 750 of FIG. 7. In operation 855, the indoor content storage device checks the value of the filtered contents list parameter in the UPnP Browsing action requested by the wireless terminal 100, and proceeds to step 860 when the value of the filtered contents list parameter is True, and the value of the filtered contents list parameter. If is False, go to Step 870. Specific procedures for the remaining steps of FIG. 8 are the same as in FIG. 7.

The embodiment of the present invention has been described by taking an example of a list of services of a storage device by using a browse action among UPnP methods for convenience, but the present invention may also apply other services to other actions including search and the like. Included in

On the other hand, the embodiments of the present invention disclosed in the specification and drawings are merely presented specific examples to easily explain the technical contents of the present invention and help the understanding of the present invention, and are not intended to limit the scope of the present 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.

1 is a block diagram of the UPnP device architecture 1.0 standard.

2 is a flowchart illustrating a method of accessing a conventional UPnP remote access service using an IMS network.

3 is a flowchart illustrating a process for a wireless terminal accessing a home and using content in the home according to the first embodiment of the present invention.

FIG. 4 is a flowchart illustrating a process for accessing a home by using a wireless terminal 100 located outside the home according to a second embodiment of the present invention to use contents in the home.

FIG. 5 is a flowchart illustrating a process for accessing a home by using a wireless terminal 100 located outside the home according to a third embodiment of the present invention to use contents in the home.

6 is a block diagram illustrating an internal structure of an indoor content storage device 400 according to an embodiment of the present invention.

7 is a flowchart illustrating an operation procedure of an indoor content storage device that provides contents to a wireless terminal 100 according to an embodiment of the present invention.

8 is a flowchart illustrating an operation sequence of an indoor content storage device that provides contents to a wireless terminal 100 according to another embodiment of the present invention.

Claims (10)

In the method of using the home network content of a wireless terminal located outside the home network, A bandwidth information transferring step of extracting bandwidth information from the remote access request by the home gateway of the home network and transmitting the bandwidth information to an indoor content storage device of the home network when the wireless terminal requests a remote access; A filtering parameter setting step of receiving, by the indoor content storage device, the bandwidth information and setting the filtering parameter for the wireless terminal; A content list generating step of, when the content list request of the wireless terminal is made, the indoor content storage device classifies the content having a predetermined bandwidth or less using a filtering parameter set for the wireless terminal and generates a content list; And And transmitting, by the in-house content storage device, a content list transmission step of transmitting the generated content list to the wireless terminal. The method of claim 1, wherein the generating of the content list comprises: classifying a content list for content having a bandwidth less than or equal to a preset bandwidth for the wireless terminal and a content list for content having the bandwidth or more preset for the wireless terminal. How to use the home network content of a wireless terminal, characterized in that the generation. The method of claim 2, wherein the transmitting of the content list comprises: And the home content storage device transmits a content list for content below the bandwidth and a content list for content above the bandwidth to the wireless terminal. 4. The method of claim 3, further comprising: paying, by the wireless terminal, an additional cost to a service provider when selecting a content included in a content list of contents of the bandwidth or more; And And requesting, by the wireless terminal, to change a bandwidth from a home gateway to change the bandwidth for receiving the content. The method of claim 1, And the bandwidth information is a bit rate of the content. The method of claim 1, wherein the content list request of the wireless terminal is made through a virtual private network set up between the wireless terminal and the home gateway. The method of claim 1, And wherein the remote access request further includes subscription information of the user of the wireless terminal. In the content storage device of a home network for providing content to a wireless terminal located outside the home network, A content storage area for storing the content; A filtering parameter storage area for setting and storing bandwidth information of the wireless terminal as a filtering parameter; A filtering parameter extracting unit that checks a device address of the wireless terminal and extracts a filtering parameter corresponding to the wireless terminal from the filtering parameter storage area when the content list is requested by the wireless terminal; And And a content list generator for classifying content having a bandwidth equal to or less than a predetermined bandwidth in the content storage area to generate a content list by using the extracted filtering parameter. The home of claim 8, wherein the content list generation unit classifies and generates a content list for content having a bandwidth less than or equal to a preset bandwidth for the wireless terminal and a content list for content having a bandwidth equal to or greater than the preset bandwidth. Content storage on the network. The content storage device of claim 8, wherein the bandwidth information is a bit rate of the content.

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