KR20140100737A - Home gateway device and method for providing iptv contents to mobile device - Google Patents

Abstract

A home gateway apparatus is provided. The home gateway apparatus comprises a first communication unit for receiving a hypertext transfer protocol (HTTP) request message including an internet group management protocol (IGMP) parameter and a plurality of conversion methods from a mobile device; an IGMP message generation unit for generating an IGMP message corresponding to the IGMP parameter; a second communication unit for transmitting the generated IGMP message to a content server and receiving media data of a multicast protocol type from the content server; and a protocol conversion unit for converting the media data of the multicast protocol type into media data of a unicast protocol type based on one method selected from the conversion methods. The first communication unit transmits the converted media data of the unicast protocol type to the mobile device.

Description

TECHNICAL FIELD [0001] The present invention relates to a home gateway apparatus and method for providing IPTV contents to a mobile device,

The present invention relates to a home gateway apparatus and method for providing IPTV contents to a mobile device.

Recently, as the spread of smart terminals has spread and the network speed has increased drastically, the Internet can be used not only for web searching but also for video streaming through a mobile communication network, so that video contents can be viewed anytime and anywhere using smart terminals.

One of the methods of watching TV using a smart terminal is to watch TV through DMB. In this regard, Korean Unexamined Patent Publication No. 2006-0045403 discloses a DMB / mobile communication integrated service terminal for network interworking between DMB and mobile communication, a method thereof, and a DMB broadcasting service in a mobile environment, A method for receiving a bidirectional data service is disclosed.

[0004] Meanwhile, as the smart phone has recently been able to access the Internet, a so-called Web TV service that provides a broadcasting service through the Internet has been introduced. However, the broadcasting service over the Internet is very dependent on the speed of the Internet network, and if it is served through a mobile communication network, it can only be provided with a very low quality. Viewers can feel the tiredness and irritability of the eyes due to the interruption of the screen or the deterioration of the picture quality in the low-quality Internet broadcasting service.

An embodiment of the present invention is to provide a home gateway device capable of providing Full HD class IPTV contents to a mobile device by using an existing IPTV platform and network as it is. In addition, by converting the protocol of the media data to a protocol optimized for the mobile device, the packet loss can be minimized and the IPTV contents can be transmitted more stably. It should be understood, however, that the technical scope of the present invention is not limited to the above-described technical problems, and other technical problems may exist.

According to an aspect of the present invention, there is provided an apparatus for receiving a hypertext transfer protocol (HTTP) request message including an Internet Group Management Protocol (IGMP) parameter and a plurality of conversion methods from a mobile device, 1 communication unit, an IGMP message generating unit for generating an IGMP message corresponding to the IGMP parameter, a second communication unit for transmitting the generated IGMP message to the content server, and receiving media data of a multicast protocol type from the content server, And a protocol conversion unit for converting the media data of the multicast protocol type into media data of a unicast protocol type based on any one selected from the first communication unit and the first communication unit. The first communication unit transmits the converted media data of the unicast protocol type to the mobile device Home gateway It is possible to provide a device.

In another embodiment of the present invention, there is provided a method for receiving an HTTP (Hypertext Transfer Protocol) request message including an Internet Group Management Protocol (IGMP) parameter and a plurality of protocol conversion methods from a mobile device, , Transmitting the generated IGMP message to a content server, receiving media data of a multicast protocol type from a content server, and transmitting the multicast protocol type media Converting the data into media data of a unicast protocol type, and transmitting media data of the converted unicast protocol type to the mobile device.

According to another embodiment of the present invention, there is provided a communication system including a message generator for generating an HTTP (Hypertext Transfer Protocol) message including Internet Group Management Protocol (IGMP) parameters and a plurality of conversion schemes, a generated HTTP message to a home gateway And a playback unit for playing back the media data of the unicast protocol type received from the home gateway apparatus.

According to one embodiment of the present invention, there is provided a home gateway apparatus capable of providing full HD-class IPTV contents to a mobile device by using an existing IPTV platform and a network as it is . In addition, by converting the protocol of the media data to a protocol optimized for the mobile device, packet loss occurring during transmission can be minimized, and IPTV contents can be provided more stably.

1 is a configuration diagram of a media data providing system 1 according to an embodiment of the present invention.
2 is a configuration diagram of the home gateway apparatus 20 shown in FIG.
FIG. 3 is a view for explaining an example of a process of transmitting media data according to the respective configurations included in the media data providing system of FIG. 1. Referring to FIG.
4 is a configuration diagram of the mobile device 30 shown in Fig.
5 is a flowchart illustrating a media data transmission method according to an exemplary embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

Throughout the specification, when a part is referred to as being "connected" to another part, it includes not only "directly connected" but also "electrically connected" with another part in between . Also, when an element is referred to as "including" an element, it is to be understood that the element may include other elements as well as other elements, And does not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a configuration diagram of a media data providing system 1 according to an embodiment of the present invention. Referring to FIG. 1, a media data providing system 1 includes a content server 10, a home gateway apparatus 20, a mobile device 30, a set top box 35, and a TV apparatus 40. At this time, the components of FIG. 1 that constitute the media data providing system 1 are generally connected through a network. For example, as shown in FIG. 1, the content server 10 is connected to the mobile device 30 and the set-top box 35 through the network and the home gateway device 20. [

An example of such a network is Wi-Fi, the Internet, a LAN (Local Area Network), a Wireless LAN (Wireless Local Area Network), WAN (Wide Area Network), PAN (Personal Area Network), 3G, 4G, LTE and the like. The content server 10, the home gateway device 20, the mobile device 30, the set top box 35, and the TV device 40 shown in FIG. 1 are not limited to those shown in FIG.

1, the content server 10 is a platform for providing services through an existing wired IPTV set-top box 35, and provides IPTV contents to the mobile device 30 through protocol conversion of media data can do. The IPTV contents may be real-time broadcasting or VOD contents.

At this time, the content server 10 may be constructed by introducing and expanding existing digital broadcasting technologies such as terrestrial broadcasting, cable broadcasting, and satellite broadcasting established by broadcasting standards organizations such as DVB and ATSC. Accordingly, the content server 10 may have a structure similar to that of the existing broadcasting system. One example of the content server 10 includes a communication relay server, a content providing server, a content service provider server, a media server, and a head end.

The content server 10 can provide IPTV contents through an IP network which is an existing broadcasting transmission method. IPTV content is basically transmitted in a multicast protocol type. For example, the media data may be compressed into H.264 and AC-3 / AAC, and may be packaged into an existing broadcast format MPEG2-TS (MPEG2 Transport Stream) and transmitted to the home gateway apparatus 20. [ In this case, the video data of the IPTV contents can be compressed by the H.264 video codec to a high quality for the TV, and the audio data of the IPTV contents can be transmitted through the AC-3 or AAC And then transmitted.

The home gateway device 20 is connected to the mobile device 30 or the set-top box 35 via the home network. The home network means a connection structure in which information can be exchanged between each node such as terminals and servers. An example of such a home network is Wi-Fi, the Internet, a LAN (Local Area Network) But are not limited to, wireless LAN (Wireless Local Area Network), WAN (Wide Area Network), PAN (Personal Area Network), 3G, 4G, LTE and the like. The mobile device 30 and the set-top box 35 may also be connected directly to a local area network (e.g., a WLAN network or a Bluetooth network).

The home gateway apparatus 20 can transmit the media data request signal of the TV apparatus 40 to the content server 10. [ The content server 10 may transmit the multicast protocol type media data to the home gateway device 20 based on the received media data request signal. The home gateway apparatus 20 can transmit the media data of the multicast protocol type received from the content server 10 to the set top box 35. [ The set top box 35 can provide high quality IPTV contents through the display of the TV device 40 to the received media data.

The media data of the multicast protocol type transmitted from the content server 10 to the home gateway apparatus 20 may be in the format of MPEG2-TS. In general, one packet of the MPEG2-TS is composed of a header containing information of a frame and a payload containing a single video or audio frame. The header of the MPEG2-TS packet includes a multicast protocol, and may be composed of, for example, multicast IP / UDP / RTP / TS.

The home gateway apparatus 20 can transmit the media data request signal of the mobile device 30 to the content server 10. [ Accordingly, the content server 10 can transmit the multicast protocol type media data to the home gateway device 20 based on the received media data request signal.

The home gateway device 20 can transmit the media data of the multicast protocol type received from the content server 10 to the mobile device 30. [ In this case, if the mobile device 30 is not equipped with a multicast protocol, the mobile device 30 will not be able to receive media data of the multicast protocol type. In order to receive IPTV contents from the mobile device 30, media data of a multicast protocol type must be converted into media data of a unicast protocol type.

The home gateway device 20 converts the media data of the multicast protocol type into media data of a unicast protocol type that can be driven in the mobile device 30 and transmits the converted media data of the unicast protocol type to the mobile device 30 ). At this time, the media data of the unicast protocol type transmitted from the home gateway apparatus 20 to the mobile device 30 may be in the format of MPEG2-TS. At this time, the header of the MPEG2-TS packet transmitted from the home gateway apparatus 20 to the mobile device 30 includes a unicast protocol and may be composed of, for example, a unicast IP / TCP / HTTP / TS .

The data that the mobile device 30 requests media data to the content server 10 may be an HTTP request message. The data received by the home gateway device 20 from the content server 10 and the data received from the home gateway device 20 by the mobile device 30 may be media data.

The mobile device 30 may be implemented as a terminal capable of connecting to a remote server through a network. The mobile device 30 is a wireless communication device that is guaranteed to be portable and mobility, for example, a PCS (Personal Communication System), a GSM (Global System for Mobile communications), a PDC (Personal Digital Cellular), a PHS (Personal Handyphone System) , PDA (Personal Digital Assistant), IMT (International Mobile Telecommunication) -2000, CDMA (Code Division Multiple Access) -2000, W-CDMA (W-CDMA), Wibro (Wireless Broadband Internet) A smartphone, a smartpad, a smartpad, a tablet PC, and the like.

The mobile device 30 according to the embodiment of the present invention can receive IPTV contents converted from the home gateway apparatus 20 into media data of a unicast protocol type. At this time, the media data of the unicast protocol type is converted from the media data of the multicast protocol type by the home gateway device 20. In general, the mobile device 30 may be a wireless-based high performance smart device having an operating system such as Android or iOS, for example.

The mobile device 30 may use a unicast protocol to minimize packet loss in the wireless section and to provide a predetermined level of quality of service (QoS). For example, the mobile device 30 may be configured to use a unicast IP (Internet Protocol), a Transmission Control Protocol (TCP), a Hypertext Transfer Protocol (HTTP) protocol, and the like, in consideration of a Wi-Fi wireless network environment such as 802.11 b / You can use HLS (HTTP Live Streaming) based streaming format. At this time, HLS is an example of a protocol that is created to implement a real-time broadcasting service by an HTTP downloading method.

Since the mobile device 30 uses a streaming format based on unicast IP, TCP, HTTP, and HLS protocol to implement a real-time broadcast service, the home gateway device 20 can use a multicast IP, a User Datagram Protocol (UDP) (Real-time Transport Protocol) protocol type into media data of a unicast protocol type so that the mobile device 30 can watch IPTV contents in real time.

2 is a configuration diagram of the home gateway apparatus 20 shown in FIG. 1 and 2, the home gateway apparatus 20 includes a first communication unit 21, an analysis unit 22, a conversion scheme selection unit 23, an IGMP message generation unit 24, a second communication unit 25 And a protocol conversion unit 26. [ However, the home gateway device 10 shown in FIG. 2 is only one embodiment of the present invention, and can be modified into various forms based on the components shown in FIG. 2. In this case, It will be appreciated by one of ordinary skill in the art.

The first communication unit 21 receives an HTTP (Hypertext Transfer Protocol) request message including an Internet Group Management Protocol (IGMP) parameter and a plurality of conversion methods from the mobile device 30. At this time, when the mobile device 30 receives the selection of the predetermined media data through the user interface, the mobile device 30 may request the first communication unit 21 for the media data corresponding to the input selection. In this case, an example of the media data request message is an HTTP request message.

The first communication unit 21 may receive a request for additional information of the media data from the mobile device 30. [ The additional information may be, for example, at least one of channel information and program information. The first communication unit 21 may transmit the additional information of the requested media data to the content server 10 and may transmit the additional information of the media data acquired from the content server 10 to the mobile device 30. [ According to another embodiment of the present invention, the mobile device 30 requests additional information of the media data directly to the content server 10 without going through the home gateway device 20, and transmits additional information from the content server 10 You can also receive it directly.

The analyzer 22 may analyze the HTTP request message received from the mobile device 30. [ At this time, the analyzer 22 extracts the IGMP parameters from the HTTP request message, and the extracted IGMP parameters include any one of Join, Leave, and Alive parameters. The IGMP parameter extracted from the analyzer 22 is transmitted to the IGMP message generator 24, and the IGMP message generator 24 generates a message corresponding to the IGMP parameter.

The conversion method selecting unit 23 can select any one of the plurality of conversion methods based on the analysis result extracted from the analyzing unit 22. [ In this case, the plurality of conversion methods include a first conversion method for changing the MAC address included in the media data of the multicast protocol type, a second conversion method for converting the media data of the multicast protocol type into the media data of the HTTP type, And a third conversion scheme for converting the media data of the cast protocol type into media data of the HLS type.

The first conversion scheme indicates a MAC address conversion scheme included in media data of a multicast protocol type. In other words, the first conversion scheme maintains a UDP (User Datagram Protocol) streaming format, and only converts the address of the MAC, which is the destination of the multicast media data, while maintaining the address of the media data to be viewed as the multicast IP / . For example, the first conversion scheme is to convert the multicast MAC address to the MAC address of the mobile device 30. [ As described above, when the first conversion scheme is used, the multicasting MAC is subjected to the MAC conversion of the mobile device 30, so that multicasting does not occur during wireless transmission. As a result, the load on the home gateway apparatus 20 is relatively . However, due to the nature of UDP, media data is unilaterally transmitted, which can lead to packet loss.

The second conversion method converts a packet header of a multicast protocol included in the MPEG2-TS into a packet header of a unicast protocol. The second conversion method converts media data of a multicast protocol type including multicast IP / UDP / RTP / TS into unicast IP / TCP / HTTP / TS unicast protocol type media data. At this time, the media data can be transmitted in the HTTP progressive streaming format. The unicast IP is a unicast URL of the mobile device 30 receiving the IPTV. The home gateway device 20 can transmit the unicast protocol type media data to the mobile device 30 via HTTP. The mobile device 30 proceeds to download media data of a unicast protocol type and starts to play the media data when the download progresses to some extent.

The third conversion method converts a packet header of a multicast protocol included in MPEG2-TS into a packet header of a unicast protocol. The third conversion method is also a method of converting media data of a multicast protocol type composed of multicast IP / UDP / RTP / TS into unicast IP / TCP / HTTP / TS unicast protocol type media data. However, in the third conversion scheme, the media data can be transmitted in the HLS scheme. HLS is a standardized method proposed by Apple Corporation, which divides media data of a multicast protocol type into chunks of time, generates a plurality of files, and transmits the chopped media data and the next media data information to the user . Accordingly, the media data can be seamlessly reproduced in the mobile device 30, but the home gateway device 20 can be subjected to a heavy load.

In the third conversion scheme, the unicast IP is a unicast URL of the mobile device 30 receiving the IPTV, and the home gateway device 20 transmits the unicast protocol type media data to the mobile device 30 in the HLS manner Lt; / RTI > The mobile device 30 reproduces the media data by the HLS method.

In the third conversion scheme, the mobile device 30 generates an HLS access URL requesting media data, and can request media data to the HLS server of the home gateway apparatus 20 through the HLS access URL. In this case, an example of the HLS access URL is 'http: // HLS_IP: port / multicastIP_port / relay.m3u8'.

The mobile device 30 may obtain the multicast IP and port information of the media data to be received from the content server 10. In this case, the IP and port information of the HLS server means the IP address and address of the HLS server implemented in the home gateway apparatus 20, and can be set through the administrator screen of the home gateway apparatus 20. [

The conversion scheme selection unit 23 selects any one of the first conversion scheme, the second conversion scheme and the third conversion scheme in the most efficient and stable manner based on the transmission rate and the resource allocation, 1 communication unit 21 as shown in FIG.

The first communication unit 21 may transmit a response message corresponding to the received HTTP request message to the mobile device 30. [ The mobile device 30 prepares to receive the media data according to the conversion method of the media data based on the response message received from the home gateway device 20. [ At this time, the response message includes information of the selected conversion method.

The IGMP message generation unit 24 generates an IGMP message corresponding to the IGMP parameter. In this case, the IGMP parameter is included in the HTTP request message transmitted from the mobile device 30, and the IGMP parameter is extracted from the HTTP request message by the analyzer 22.

The IGMP message generator 24 generates an IGMP message. In this case, the IGMP message is either an IGMP join message, an IGMP live message, or an IGMP alive message. Generally, an IGMP join message is a message requesting joining a multicast group. For example, the IGMP message generation unit 24 generates an IGMP join message for requesting a join to a multicast group, and the second communication unit 25 transmits an IGMP message to the content server 10.

The IGMP Rive message may be a message requesting the withdrawal of a multicast group. The IGMP message generator 24 generates an IGMP Rib message for requesting the withdrawal of the multicast group and the second communicator 25 can transmit the IGMP Rib message to the content server 10. [ The IGMP Alive message may be a message requesting to maintain a subscription of a multicast group. The IGMP message generator 24 may generate an IGMP Alive message for requesting maintenance of a multicast group and the second communication unit 25 may transmit an IGMP Alive message to the content server 10.

The second communication unit 25 transmits the IGMP message generated from the IGMP message generation unit 24 to the content server 10 and receives media data of the multicast protocol type from the content server 10. [

The protocol conversion unit 26 converts media data of a multicast protocol type into media data of a unicast protocol type based on any one of a plurality of conversion methods. The media data of the multicast protocol type is media data including one or more types of multicast IP (Internet Protocol), UDP (User Datagram Protocol) and RTP (Real-time Transport Protocol) Media data may include one or more types of unicast IP (Internet Protocol), Transmission Control Protocol (TCP), Hypertext Transfer Protocol (HTTP), and HTTP Live Streaming (HLS).

The protocol conversion unit 26 may convert the media data of the multicast protocol type into the media data of the unicast protocol type based on the transmission rate and the resource allocation status of the media data of the multicast protocol type.

The first communication unit 21 transmits the converted media data of the unicast protocol type to the mobile device 30. In this case, the media data of the converted unicast protocol type may include destination information, and the first communication unit 21 may transmit the converted media data of the unicast protocol type to the mobile device based on the destination information.

FIG. 3 is a view for explaining an example of a process of transmitting media data according to the respective configurations included in the media data providing system of FIG. 1. Referring to FIG. Hereinafter, an example of a process of transmitting and receiving a signal or a message according to an exemplary embodiment of the present invention will be described with reference to FIG. 3. However, the present invention is not limited to such an embodiment, and according to various embodiments described above It will be apparent to those skilled in the art that the process of transmitting and receiving data shown in FIG.

Referring to FIG. 3, the mobile device 30 transmits an HTTP request message to the home gateway device 20 (S310).

The home gateway apparatus 20 analyzes the received HTTP request message to obtain an IGMP parameter in step S320, and transmits a response message corresponding to the received HTTP request message to the mobile device 30 in step S330.

The home gateway apparatus 20 generates an IGMP message based on the obtained IGMP parameter at step S340, and transmits the generated IGMP message to the content server 10 at step S350. The content server 10 transmits the multimedia data of the multicast protocol type corresponding to the received IGMP message to the home gateway (S360).

The home gateway device 20 converts the media data of the multicast protocol type received from the content server 10 into media data of the unicast protocol type (S370), and transmits the converted media data of the unicast protocol type to the mobile device 30 (S380).

The mobile device 30 plays the IPTV contents (S390).

The order between the above-described steps S310 to S390 is only an example, but is not limited thereto. That is, the order between the above-described steps S310 to S390 may be mutually varied, and some of the steps may be executed simultaneously.

4 is a configuration diagram of the mobile device 30 shown in Fig. Hereinafter, contents that have not been described for the mobile device 30 will be replaced with contents described for the mobile device 30 through FIGS. 1 to 3 above. Referring to FIG. 4, the mobile device 30 includes a message generating unit 31, a communication unit 32, and a reproducing unit 33. It should be noted that the mobile device 30 shown in FIG. 4 is only one embodiment of the present invention, and can be modified into various forms based on the components shown in FIG. 4, Those skilled in the art will understand the present invention.

The message generating unit 31 generates an HTTP message including an IGMP parameter and a plurality of conversion methods. At this time, the IGMP parameter has at least one of a join for joining a multicast group request, a leave for requesting a withdrawal of a multicast group, and an alive for maintaining a multicast group .

The communication unit 32 transmits the HTTP message generated from the message generation unit 31 to the home gateway device 20. [ The communication unit 32 can also receive a response message corresponding to the HTTP message from the home gateway apparatus 20. [ At this time, the response message includes information of a conversion method selected from a plurality of conversion methods.

The communication unit 32 can receive media data of a unicast protocol type from the home gateway apparatus 20. [ At this time, the media data of the received unicast protocol type is converted from the media data of the multicast protocol type through one of the plurality of conversion methods.

The communication unit 32 requests additional information of the media data to the content server 10 through the home gateway apparatus 20 and the additional information of the media data acquired from the content server 10 is transmitted to the home gateway apparatus 20 through the home gateway apparatus 20 Lt; / RTI > At this time, the additional information may be at least one of channel information or program information. Alternatively, the communication unit 32 may directly request and receive the additional information of the media data from the content server 10 without going through the home gateway device 20. [

The reproduction unit 33 reproduces the media data of the unicast protocol type received from the home gateway apparatus 20. [ At this time, the playback unit 33 can display the converted media data of the unicast protocol type through the IPTV application on the display of the mobile device in real time.

5 is a flowchart illustrating a media data transmission method according to an exemplary embodiment of the present invention. The method of transmitting media data according to the embodiment shown in FIG. 5 includes the steps of time-series processing in the home gateway apparatus 20 according to the embodiment shown in FIG. Therefore, the contents described above with respect to the home gateway apparatus 20 according to the embodiment shown in FIG. 2 apply to the media data transmission method according to the embodiment shown in FIG.

In step S510, the first communication unit 21 receives from the mobile device 30 an HTTP request message including an IGMP parameter and a plurality of protocol conversion methods. In step S520, the IGMP message generating unit 23 generates an IGMP message corresponding to the IGMP parameter. In step S530, the second communication unit 26 transmits the generated IGMP message to the content server 10. In step S540, the second communication unit 26 receives the media data of the multicast protocol type from the content server 10. [ In step S550, the protocol conversion unit 25 converts media data of a multicast protocol type into media data of a unicast protocol type based on any one selected from a plurality of protocol conversion schemes. In step S560, the first communication unit 21 transmits the converted media data of the unicast protocol type to the mobile device 30. [

The method of transmitting media data according to the embodiment described with reference to FIG. 5 may also be implemented in the form of a recording medium including instructions executable by a computer, such as a program module executed by a computer. Computer readable media can be any available media that can be accessed by a computer and includes both volatile and nonvolatile media, removable and non-removable media. In addition, the computer-readable medium may include both computer storage media and communication media. Computer storage media includes both volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data. Communication media typically includes any information delivery media, including computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave, or other transport mechanism.

It will be understood by those skilled in the art that the foregoing description of the present invention is for illustrative purposes only and that those of ordinary skill in the art can readily understand that various changes and modifications may be made without departing from the spirit or essential characteristics of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

10: Server
21: First communication section
22: Analytical Department
23: conversion method selection unit
24: IGMP message generation unit
25: second communication section
26: Protocol conversion section
30: Mobile device

Claims (15)

In the home gateway apparatus,
A first communication unit for receiving an HTTP (Hypertext Transfer Protocol) request message including an Internet Group Management Protocol (IGMP) parameter and a plurality of conversion methods from a mobile device;
An IGMP message generator for generating an IGMP message corresponding to the IGMP parameter;
A second communication unit for transmitting the generated IGMP message to a content server and receiving media data of a multicast protocol type from the content server; And
And a protocol conversion unit for converting media data of the multicast protocol type into media data of a unicast protocol type based on any one of the plurality of conversion methods,
And the first communication unit transmits the converted media data of the unicast protocol type to the mobile device.
The method according to claim 1,
An analyzer for analyzing an HTTP request message received from the mobile device; And
Further comprising: a conversion method selection unit that selects any one of a plurality of conversion methods based on the analysis result.
3. The method of claim 2,
Wherein the first communication unit transmits a response message corresponding to the received HTTP request message to the mobile device,
And the response message includes information of the selected conversion method.
The method according to claim 1,
Wherein the plurality of conversion methods include a first conversion method for changing the MAC address included in the media data of the multicast protocol type, a second conversion method for converting media data of the multicast protocol type into media data of the HTTP type, And a third conversion method of converting media data of a multicast protocol type into media data of an HLS (HTTP Live Streaming) type.
5. The method of claim 4,
Wherein the multicast protocol type comprises one or more types of multicast IP (Internet Protocol), User Datagram Protocol (UDP), and Real-time Transport Protocol (RTP).
The method according to claim 1,
Wherein the unicast protocol type comprises one or more types of unicast Internet Protocol (TCP), Transmission Control Protocol (TCP), Hypertext Transfer Protocol (HTTP), and HTTP Live Streaming (HLS).
The method according to claim 1,
Wherein the protocol conversion unit converts the media data of the multicast protocol type into the media data of the unicast protocol type based on the transmission rate and the resource allocation state of the media data of the multicast protocol type.
3. The method of claim 2,
Wherein the analyzing unit extracts the IGMP parameter from the HTTP request message,
Wherein the IGMP message generator generates an IGMP message corresponding to the extracted IGMP parameter.
The method according to claim 1,
Wherein the IGMP parameter is one of a join, a leave, and an alive parameter.
10. The method of claim 9,
Wherein the IGMP message is one of an IGMP join message, an IGMP live message, and an IGMP alert message,
Wherein the IGMP join message is a message requesting joining a multicast group.
The method according to claim 1,
Wherein the media data of the converted unicast protocol type further includes destination information including an identifier of the mobile device,
Wherein the first communication unit transmits the converted media data of the unicast protocol type to the mobile device based on the destination information.
A method for transmitting media data,
Receiving from a mobile device an HTTP (Hypertext Transfer Protocol) request message including an Internet Group Management Protocol (IGMP) parameter and a plurality of protocol translation schemes;
Generating an IGMP message corresponding to the IGMP parameter;
Transmitting the generated IGMP message to a content server;
Receiving media data of a multicast protocol type from the content server;
Converting media data of the multicast protocol type into media data of a unicast protocol type based on any one of the plurality of protocol conversion methods; And
And transmitting media data of the converted unicast protocol type to the mobile device.
In a mobile device,
A message generating unit for generating an HTTP (Hypertext Transfer Protocol) message including an IGMP (Internet Group Management Protocol) parameter and a plurality of conversion methods;
A communication unit for transmitting the generated HTTP message to the home gateway apparatus; And
And a playback unit for playing media data of a unicast protocol type received from the home gateway apparatus,
Wherein the media data of the received unicast protocol type is transformed from media data of a multicast protocol type through any of the plurality of conversion schemes.
14. The method of claim 13,
Wherein the playback unit displays media data of the converted unicast protocol type in real time on a display of the mobile device through an IPTV application.
14. The method of claim 13,
Wherein the communication unit transmits control information corresponding to the input selection to the home gateway apparatus when a selection for the reproduced media data is input through a user interface.

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