KR101244512B1 - Smart DMB Service System, Apparatus and Method to Provide/Receive of IP Streaming Service for Smart DMB Service - Google Patents

Abstract

A system for providing a smart DM service, an IP streaming reception / provision method for a smart DM service, and a device are provided.
In one aspect, an IP streaming receiving method for a smart DMB service of a DMB receiving terminal includes: an IP packet through a DMB broadcasting network, wherein the IP packet includes signaling information for receiving an IP streaming service through the DMB broadcasting network. Receiving, using the address information of a default uniform resource locator (URL) server included in the signaling information, accessing the default URL server through a communication network, and receiving the DMB at the default URL server. Transmitting the current location information of the terminal and information on an IP streaming service that can be provided at the current location of the DMB receiving terminal from the default URL server-the information on the IP streaming service, together with the DMB broadcasting in the DMB receiving terminal; Receiving a list of available services.

Description

Smart DMB service providing system, IP streaming receiving / providing method and device for smart DMMB service {Smart DMB Service System, Apparatus and Method to Provide / Receive of IP Streaming Service for Smart DMB Service}

The present invention relates to a method for transmitting an IP (Internet Protocol) packet using an improved DMB (Digital Multimedia Broadcasting) service and a DMB network, and a method for receiving / providing an IP streaming for a smart DMB service, which is an improved DMB service. And to the system.

Recently, as the use of DMB receiving terminals and smart phones is expanded, various convergence services have become possible.

In addition, in the case of DMB broadcasting provided in a DMB broadcasting network, an interactive service and provision of various additional data have been studied.

There have been attempts to provide various types of services to users through the DMB broadcasting network, but there have been no attempts to provide IP streaming services through the DMB broadcasting network.

Therefore, the present specification is to propose a "smart DM service" that provides a variety of services to the user through a DMB broadcasting network.

An object of the present invention is to propose a "smart DM service" that provides a variety of services to users through a DMB broadcasting network.

In addition, the present invention is to provide a method and system for receiving / providing IP streaming for smart DMB service.

In addition, the present invention is to provide a method for receiving IP (Internet Protocol) streaming for a smart DMB service of a digital multimedia broadcasting (DMB) receiving terminal.

In addition, the present invention is to propose a method for providing IP (Internet Protocol) streaming using a mobile broadcasting convergence platform in a smart DM service providing system.

The present invention also proposes a smart DM service providing system capable of IP streaming.

 In one aspect, an IP streaming receiving method for a smart DMB service of a DMB receiving terminal includes: an IP packet through a DMB broadcasting network, wherein the IP packet includes signaling information for receiving an IP streaming service through the DMB broadcasting network. Receiving, using the address information of a default uniform resource locator (URL) server included in the signaling information, accessing the default URL server through a communication network, and receiving the DMB at the default URL server. Transmitting the current location information of the terminal and information on an IP streaming service that can be provided at the current location of the DMB receiving terminal from the default URL server-the information on the IP streaming service, together with the DMB broadcasting in the DMB receiving terminal; Receiving a list of available services.

In one aspect, a method of providing IP (Internet Protocol) streaming using a mobile broadcast convergence platform, the DMB broadcast providing device is a real-time DMB broadcast and IP packets through the DMB broadcasting network-the IP packet to the IP streaming service through the DMB broadcasting network Including signaling information to be provided; receiving, by a default URL server, current location information of the DMB receiving terminal from the DMB receiving terminal receiving the IP packet; and the default URL server receiving the DMB. Transmitting information on an IP streaming service that can be provided at a current location of a receiving terminal, wherein the information on the IP streaming service includes a list of services that can be provided together with DMB broadcasting from the DMB receiving terminal to the DMB receiving terminal; It includes.

In another aspect, a method of providing IP (Internet Protocol) streaming using a mobile broadcast convergence platform, the DMB broadcast providing device is a real-time DMB broadcast and IP packets through the DMB broadcasting network-the IP packet is an IP streaming service through the DMB broadcasting network And the signaling information for receiving the information, and the DMB receiving terminal receiving the IP packet using address information of a default uniform resource locator (URL) server included in the signaling information. Accessing the default URL server through a communication network; transmitting, by the DMB receiving terminal, current location information of the DMB receiving terminal to the default URL server; and the default URL server at the current location of the DMB receiving terminal. Information on the IP streaming service that can be provided-The information on the IP streaming service is the DMB receiving end. In the speech, including a list of services that can be provided with the DMB broadcast-to the DMB receiving terminal.

In one aspect, the smart DM service providing system, DMB broadcasting real-time DMB broadcasting and IP packets through the DMB broadcasting network, the IP packet includes signaling information for receiving IP streaming service through the DMB broadcasting network Information on an IP streaming service that can receive current location information of the DMB receiving terminal from a broadcast providing device and a DMB receiving terminal receiving the IP packet, and can provide the current location of the DMB receiving terminal-information on the IP streaming service. The DMB receiving terminal includes a default URL server for transmitting a list of services that can be provided with DMB broadcasting to the DMB receiving terminal.

In one aspect, the DMB receiving terminal, the DMB module for receiving real-time DMB broadcasting and IP packets through the DMB broadcasting network, the IP packet includes signaling information for receiving an IP streaming service through the DMB broadcasting network; It includes a GPS module for obtaining location information of the current location, a control unit and a memory.

The control unit may include a) accessing the default URL server through a communication network using address information of a default uniform resource locator (URL) server included in the signaling information, and b) contacting the default URL server. A function of transmitting current location information of a DMB receiving terminal, and c) information on an IP streaming service that can be provided at the current location of the DMB receiving terminal from the default URL server, wherein the information on the IP streaming service is received at the DMB receiving terminal. And a list of services that can be provided with the DMB broadcast-and configured to perform a function of receiving the service, and the memory stores a list of services that can be provided with the DMB broadcast.

Through the DMB broadcasting network, a "smart DM service" capable of providing a variety of services to users is possible.

Through the IP streaming reception / provision method and system, various convergence services can be provided to the user.

Using the mobile broadcast convergence platform, it is possible to provide a convergence service according to the current location of the user anytime, anywhere.

1 is a view for explaining the concept of a smart DMB system according to an embodiment of the present invention.
2 is a view for explaining an example of the configuration of a smart DMB system according to an embodiment of the present invention.
3 is a view for explaining a detailed configuration example of a smart DMB system according to an embodiment of the present invention.
4 is a diagram illustrating a configuration of a DMB receiving terminal according to an embodiment of the present invention.
5 is a view for explaining an example of the hardware configuration of the DMB receiving terminal according to an embodiment of the present invention.
6 is a diagram illustrating a structure of a transmission frame according to an embodiment of the present invention.
7 is a diagram illustrating an IP packet transmission scheme according to an embodiment of the present invention.
FIG. 8 is a diagram illustrating the structure of an MPEG-2 TS packet shown in FIG. 7.
FIG. 9 is a diagram illustrating a data format of an SID field of FIG. 7.
FIG. 10 is a diagram illustrating a data format of a subchannel field of FIG. 7.
FIG. 11 is a diagram illustrating a data format of an SCIdS field of FIG. 7.
FIG. 12 is a diagram illustrating a data format of a UAType / QoS Type field of FIG. 7.
FIG. 13 is a diagram illustrating a data format of a default URL field of FIG. 7.
14 illustrates an IP packet transmission scheme according to an embodiment of the present invention.
15 is a diagram illustrating a protocol stack of a smart DMB system according to an embodiment of the present invention.
16 illustrates an MPEG-2 TS encryption scheme according to an embodiment of the present invention.
17 shows an example of a PID hopping pattern according to an embodiment of the present invention.
18 illustrates another example of an encryption method of an MPEG-2 TS packet according to an embodiment of the present invention.
19 illustrates statistical multiplexing of MPEG-2 TS packets according to an embodiment of the present invention.

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

1 is a view for explaining the concept of a smart DMB system according to an embodiment of the present invention.

Referring to FIG. 1, a "smart DMB service" conceptually represents openness and participation, convergence and advancement. Meanwhile, the "smart DMB service" may be understood as a concept of separating a service platform and a network. That is, the "mobile broadcast convergence platform" providing "smart DMB service" can be mounted on any kind of mobile broadcast and communication network. Hereinafter, a system for providing a smart DMB service will be referred to as a "smart DMB service providing system".

More specifically, "smart DMB service" means that the existing DMB broadcasting service, mobile OTT (Over-the-Top) service, web-based service is provided to the DMB receiving terminal 100 in a fused form. Here, the web-based service may be provided to the DMB receiving terminal 100 through a web browser based on an Open API (Application Programming Interface) for the DMB broadcasting service. "DMB receiving terminal" is a terminal capable of receiving DMB broadcasting, and means a smart phone, a mobile communication terminal, a notebook computer, a digital TV, an IP TV, a PC, and the like. In this case, the DMB receiving terminal 100 may receive various convergence services through a change, extension, or addition of the Open API.

In FIG. 1, the content 110 may be supplied to the smart DMB service providing system by the participation of numerous users through an open channel. Of course, the content 110 may be content produced by a broadcaster.

The platform 120 may be configured in the form of a mobile broadcast fusion platform described below. In this case, the mobile broadcast convergence platform may be mounted in a DMB broadcast providing apparatus which will be described later. Accordingly, the DMB broadcasting providing apparatus may provide a service in which various services are fused to the DMB receiving terminal 100.

In FIG. 1, the smart DMB service may be provided to the DMB receiving terminal 100 through various heterogeneous networks. That is, in FIG. 1, the network DMB 130 refers to a DMB broadcasting network. In addition, in FIG. 1, the network next generation 140 refers to a next generation mobile communication network or a next generation DMB broadcasting network. In addition, the network Wi-Fi, Wibro, 3G (WCDMA) 150 refers to a communication network capable of Internet access. Hereinafter, communication networks such as Wi-Fi, Wibro, and WCDMA will be referred to as "3W".

The DMB receiving terminal 100 may receive a smart DMB service from the platform 120 through the networks 130, 140, and 150, and may perform bidirectional communication with the platform 120 through a return channel. Here, the return channel may be provided to the DMB receiving terminal 100 through the network Wi-Fi, Wibro, 3G (WCDMA) 150.

2 is a view for explaining an example of the configuration of a smart DMB system according to an embodiment of the present invention.

Referring to FIG. 2, the smart DMB system provides an IP streaming service to the DMB receiving terminal 100 through broadcast networks 201 and 203 and communication networks 211 and 213. Of course, through the smart DMB system, the DMB receiving terminal 100 may be provided with application services such as general DMB broadcasting service, web service, augmented reality service, as well as IP streaming service. Here, an example of an application service may include augmented reality that can be provided at a current location of the DMB receiving terminal 100, data providing for a tourist destination, a building, etc. around the location.

The broadcasting network f1 201 and the broadcasting network f2 203 may be DMB broadcasting networks having different usage frequencies and corresponding regions. When the DMB receiving terminal 100 moves from the coverage area corresponding to the coverage of the broadcasting network f1 201 to the coverage area corresponding to the coverage of the broadcasting network f2 203, the DMB receiving terminal 100 moves the hand based on the information provided by the Default URL server 230. Over may be performed. The handover will be described later.

Hereinafter, a procedure for receiving a smart DM service and an IP streaming providing / receiving method for a smart DMB service will be described in detail from the viewpoint of a DMB receiving terminal.

<1. IP packet transmission through DMB broadcasting network>

In FIG. 2, it is assumed that the DMB receiving terminal 100 is located in a region corresponding to the coverage of the current broadcasting network f1 201.

The DMB receiving terminal 100 receives an IP packet through a DMB broadcasting network. In this case, the IP packet includes signaling information for receiving an IP streaming service through the DMB broadcasting network. In addition, the IP packet may include electronic program guide (EPG) information for DMB broadcasting and data for application services.

An IP packet transmitted to the DMB receiving terminal 100 through the broadcasting network f1 201 may be transmitted through the process illustrated in FIG. 7. That is, the DMB broadcast providing device (not shown) inserts the IP packet into an MPEG-2 TS (Transport Stream), applies RS (Reed-Solomon) coding to the MPEG-2 TS, and then performs interleaving. In addition, the MPEG-2 TS to which the RS coding is applied and the interleaving is performed through the stream mode subchannel of the DMB broadcasting network may be transmitted to the DMB receiving terminal 100.

In addition, the IP packet may be transmitted in the broadcast network f1 201 through the transmission frame shown in FIG. A detailed description of a transport frame and a specific data format of the signaling information will be described with reference to FIGS. 6 to 13.

<2. Receive Information on IP Streaming Service from the Default URL Server>

The DMB receiving terminal 100 may know that an IP stream is received through the DMB broadcasting network through the signaling information. However, the type of received IP streaming, information for decoding the corresponding IP packet, and the like are received from the default URL server 230.

First, the DMB receiving terminal 100 accesses the default URL server 230 through a communication network using address information of a default uniform resource locator (URL) server included in the signaling information.

The DMB receiving terminal 100 transmits current location information of the DMB receiving terminal 100 to the default URL server 230.

The default URL server 230 transmits information on the IP streaming service that can be provided at the current location of the DMB receiving terminal 100 to the DMB receiving terminal 100. The information on the IP streaming service includes a list of services that the DMB receiving terminal 100 can provide with DMB broadcasting.

The default URL server 230 may provide three types of information to the DMB receiving terminal 100. That is, the 'information about the IP streaming service' provided from the default URL server 230 to the DMB receiving terminal 100 may include information A, information B, and information C as follows.

a) information A: 'information on an over-the-top (OTT) service transmitted through the communication network';

b) Information B: 'Information about the IP streaming service transmitted through the DMB broadcasting network or the whole service transmitted through the DMB broadcasting network-The whole service is provided through the DMB broadcasting, the IP streaming service, a web server or a media server. Contains available application services-for '

c) information C: 'service information for another area of the DMB broadcasting network and handover information of the DMB broadcasting network;

As described in Table 1, the information A indicates the name of the service, the type of the service, decoder information for decoding data related to the service, encryption information, IP address and port information provided with the service. It may include.

[Table 1]

In Table 1, the service name means a name that can be identified by the user in the EPG list. The service type may be classified into real time / non-real time or video / audio / Application / data.

As shown in Table 2, the information B may include a reception region of the corresponding service, a frequency, a subchannel for receiving the IP streaming service, and a packet ID of a packet including the corresponding service.

[Table 2]

In Table 2, regions may be divided into administrative districts, building names, ultra-local representative names, and the like, or may be identified by identifiers.

As described in Table 3, the information C may include information on a link number for providing a handover to the DMB receiving terminal, a frequency for each region, and a list of services available for each region.

[Table 3]

In Table 3, the link number means a preset number in two regions (or regional areas) for handover.

<3. Configuration of Service List on DMB Receiving Terminal>

The DMB receiving terminal 100 may configure a list of all available services by using 'information on the IP streaming service' received from the default URL server 230. Here, "composing a service list" may be displaying or storing a service list in an EPG form.

The DMB receiving terminal 100 first extracts a broadcast service list (hereinafter, referred to as broadcast EPG or ESG (Electronic Service Guide)) through EPG information received through the DMB broadcasting network. The DMB receiving terminal 100 extracts a service list (hereinafter referred to as communication EPG) transmitted through a communication channel from the 'information about IP streaming service' received from the default URL server 230. Next, the DMB receiving terminal 100 fuses the broadcast EPG and the communication EPG to form an integrated service list (hereinafter referred to as an integrated EPG).

In this case, the "fusion of broadcast EPG and communication EPG" may be, for example, combining an additional service that can be provided at the current location with the DMB broadcast currently viewed by the user. The integrated EPG may include a list of application services that can be additionally provided according to the current location of the DMB receiving terminal 100 even when the user is watching the same DMB broadcast.

That is, the DMB receiving terminal 100 may check a list of services that can be provided together with DMB broadcasting, and construct an integrated service list in which the DMB broadcasting and application services are converged. In addition, the DMB receiving terminal 100 may check a list of services that can be provided together with the DMB broadcast, and configure a web browser in which a web page and the 'DMB broadcast and the application service' are meshed up. In this case, the list of services that can be provided with the DMB broadcast may be provided with an updated list in each of the first zone, the second zone, and the shaded zone of the DMB broadcasting network as the DMB receiving terminal 100 moves.

<4. Operation Scenarios and Examples of Smart DMB Service>

In FIG. 2, the application service server 220 may provide an application service that may be provided through the communication network 213 to the DMB receiving terminal 100. For example, the application service server 220 may provide a mobile OTT service, a service that may be provided through an open channel, to the DMB receiving terminal 100.

In FIG. 2, the web server 260 may provide an open API based web service to the DMB receiving terminal 100. At this time, the DMB receiving terminal 100 accesses the web server 260 to request a web page, and displays the received web page through a browser. The DMB receiving terminal 100 may extract information on a DMB broadcast or mobile OTT service associated with the mobile web page in the process of interpreting and displaying the web page. The DMB receiving terminal 100 may receive the DMB broadcasting service and the mobile OTT service through the Open API according to 'information about the DMB broadcasting or mobile OTT service associated with the mobile web page'. Finally, the browser provided in the DMB receiving terminal 100 may display a web page on which a web page, a DMB broadcast, and a mobile OTT service are mashed up.

In FIG. 2, the ultra local service server 240 may provide a specific service (hereinafter, referred to as an ultra local application service) to the DMB receiving terminal 100 in small community units such as a stadium, theater, complex shopping mall, and park. have. That is, after configuring the integrated EPG of the DMB receiving terminal 100, information about the ultra local application service may be requested to the default URL server 230. The default URL server 230 provides the DMB receiving terminal 100 with ultra local application service information valid at the current location of the DMB receiving terminal 100. The DMB receiving terminal 100 may configure an integrated service list for DMB broadcasting, mobile OTT service, and ultra local application service. If the DMB receiving terminal 100 is moved and the currently received ultra local application service becomes invalid, the DMB receiving terminal 100 transmits the location information of the moved position to the default URL server 230. Send and again receive a list of valid ultra-local application services from the moved location. On the other hand, when the location server 250 tracks and knows the location of the DMB receiving terminal 100 periodically, the location server 250 may know that the DMB receiving terminal 100 has moved. Therefore, the location server 250 may provide the moved location information of the DMB receiving terminal 100 to the default URL server 230. Accordingly, after the default URL server 230 receives the movement information of the DMB receiving terminal 100 from the location server 250, the DMB receiving terminal 100 obtains a list of ultra local application services that are valid at the moved location. Can also be provided.

<5. Handover Scenario>

In the handover scenario, it is assumed that the DMB receiving terminal 100 moves from the coverage of the broadcasting network f1 201 to the coverage of the broadcasting network f2 203. At this time, the DMB receiving terminal 100 may start a handover procedure according to the QoS state. The QoS state refers to the quality of the service currently being used, whether a real-time or non-real-time service was provided, whether the service provided in the coverage of the broadcasting network f1 201 is provided at a variable bit rate (VBR), and the like. . If the service provided in the coverage of the broadcasting network f1 201 is a service provided in real time, it may be necessary to perform a handover.

When the handover is required, the DMB receiving terminal 100 requests handover information from the default URL server 230. In this case, the DMB receiving terminal 100 may transmit the information on its current location, the frequency of use, and the information on the service being provided to the default URL server 230. The default URL server 230 transmits information on the broadcast network f2 203 to the DMB receiving terminal 100 in the format shown in Table 3. The DMB receiving terminal 100 may switch frequencies or receive a new service based on the information received from the default URL server 230. Thereafter, the DMB receiving terminal 100 receives an IP packet through the broadcasting network f2 203. The DMB receiving terminal 100 requests the default URL server 230 for information on an IP streaming service valid in the coverage of the broadcasting network f2 203. The default URL server 230 transmits information on the IP streaming service that can be provided in the coverage of the broadcast network f2 203 to the DMB receiving terminal 100. The DMB receiving terminal 100 updates the integrated EPG. Meanwhile, the location server 250 may provide the moved location information of the DMB receiving terminal 100 to the default URL server 230. Therefore, after the default URL server 230 receives the movement information of the DMB receiving terminal 100 from the location server 250, the DMB receiving terminal 100 receives information on the IP streaming service valid at the moved position. Can also be sent to.

The handover may be performed by the application service server 220 and the web server 260 in a similar manner. That is, the default URL server 230 is provided by the coverage of the broadcasting network f2 203 when the DMB receiving terminal 100 moves to the coverage of the broadcasting network f2 203 while using the mobile OTT service or the web service. The mobile OTT service list and the web service list that can be received may be provided to the DMB receiving terminal 100.

On the other hand, when the DMB receiving terminal 100 moves to a shaded area that cannot receive the DMB broadcast signal, the default URL server 230 displays a list of mobile OTT services that can be provided in the shaded area. 100).

3 is a view for explaining a detailed configuration example of a smart DMB system according to an embodiment of the present invention.

Referring to FIG. 3, a smart DMB system according to an embodiment includes a DMB broadcasting providing apparatus 310, other service providing means 330, and a DMB receiving terminal 100. The smart DMB system may provide an IP streaming service to the DMB receiving terminal 100 through the DMB broadcasting network 301 and the mobile internet network 303.

The DMB broadcast providing apparatus 310 broadcasts a real time DMB broadcast and an IP packet through a DMB broadcast network. In addition, the DMB broadcasting providing apparatus 310 may transmit real time broadcasting, push data, VoD / AoD, etc. to the DMB receiving terminal 100 through the mobile internet network 303. Therefore, when the DMB receiving terminal 100 is located in the DMB broadcasting shadow area, the DMB receiving terminal 100 may receive a real time broadcast through the mobile internet network 303.

The DMB broadcast providing apparatus 310 may generate / receive / store each of the video 311, the audio 313, the data 314, the app (Application provided in a smartphone, etc.) 316, and the integrated EPG 318. Means may be included. In addition, the DMB broadcasting providing apparatus 310 may include a DMB transmitting unit 312 for broadcasting DMB broadcasting through the DMB broadcasting network 301. In addition, the DMB broadcasting providing apparatus 310 may include a 3W transmitter 315 for transmitting a mobile OTT service through the mobile Internet network 303. The DMB broadcasting providing apparatus 310 may further include a data transmitter 317 for transmitting data and a VoD / AoD data transmitter 319 for transmitting VoD / AoD data.

The DMB transmitter 312 inserts an IP packet into an MPEG-2 TS (Transport Stream), applies RS (Reed-Solomon) coding to the MPEG-2 TS, and then transmits the RS through a stream mode subchannel of the DMB broadcasting network. The MPEG-2 TS to which the coding is applied may be transmitted to the DMB receiving terminal.

The 3W transmitter 315 may transmit real time broadcast data through a mobile internet network.

The data transmitter 317 may transmit push data that can be combined with the 'real-time DMB broadcast' or the 'real-time broadcast data' to the mobile internet network.

In FIG. 3, the fusion platform 321 means that the fusion platform may be provided in the DMB broadcasting providing apparatus 310, rather than a specific hardware configuration.

In FIG. 3, the other service providing means 330 includes an SNS providing apparatus 331 for providing a Social Network Service (SNS) service, a personal video recorder (PVR) 333, and an AAA server for managing authentication / billing / authorization. 335 and an advertisement server 336 that provides an advertisement. In this case, the other service providing means 330 may be provided in the default URL server 230.

4 is a diagram illustrating a configuration of a DMB receiving terminal according to an embodiment of the present invention.

The DMB receiving terminal 100 may be provided with a smart DMB service through a web browser 400 based on an Open API. Recently, the web has evolved beyond the browser stage to the web platform. DMB broadcasting can be added as a service component in an html5-based open web platform. In addition, DMB broadcasting can be mashed up with various Open API services.

In FIG. 4, the web server 410 performs the same function as the web server 260 of FIG. 2, and the media server 420 is provided with the OTT service or other service providing means 330 through the mobile Internet network of FIG. 3. The same function, and the default URL encryption AAA 430 performs the functions of the default URL server 230 and the AAA server 335.

5 is a view for explaining an example of the hardware configuration of the DMB receiving terminal according to an embodiment of the present invention.

Referring to FIG. 5, the DMB receiving terminal 100 includes a DMB module, a GPS module, a controller (processor), and a memory.

The DMB module receives real-time DMB broadcasting and IP packets through the DMB broadcasting network. In the present specification, the term 'module' generally refers to a computer-related entity and may mean, for example, hardware, a combination of hardware and software, and software.

The GPS module acquires location information of the current location.

The control unit includes a) a function of accessing the default URL server through a communication network using address information of a default uniform resource locator server included in the signaling information, and b) receiving the DMB from the default URL server. And c) information about an IP streaming service that can be provided at the current location of the DMB receiving terminal from the default URL server, wherein the information about the IP streaming service is performed by the DMB receiving terminal. It includes a list of services that can be provided with the broadcast-configured to perform the function of receiving.

The controller may be configured to provide the user with a service that can be provided together with the DMB broadcast and the DMB broadcast through a web browser based on an Open API (Application Programming Interface).

The control unit checks a list of services that can be provided with the DMB broadcast, a) constructs an integrated service list in which the DMB broadcast and the application service are fused, or b) meshes the web page and the 'DMB broadcast and the application service'. It may be configured to perform a function of configuring a web browser of the type.

On the other hand, the list of services that can be provided with the DMB broadcast includes a 'list updated in each of the first zone, the second zone, and the shaded zone of the DMB broadcasting network according to the movement of the DMB receiving terminal.' The list of services at the current location may be updated with the list of services at the moved location based on the list.

The memory stores various data such as a list of services that can be provided with the DMB broadcast, a broadcast EPG, and a communication EPG. The memory may include, for example, high-speed random access memory, magnetic disk, SRAM, DRAM, ROM, flash memory, or nonvolatile memory. The memory may include a software module, a command set, or other various data necessary for the operation of the DMB receiving terminal 100. In addition, access to memory by other components, such as processors and peripheral interfaces, may be controlled by the processor.

6 is a diagram illustrating a structure of a transmission frame according to an embodiment of the present invention.

Referring to FIG. 6, an IP packet includes a synch channel for transmitting synchronization information, a fast information channel for transmitting the signaling information, and a main service channel for transmitting data for an IP streaming service. It can be transmitted in the DMB broadcasting network through a transport frame consisting of (Main Service Channel, MSC).

Meanwhile, data for an application service such as mobile OTT may be transmitted in the MSC, and signaling information for accessing the application service transmitted by the DMB receiving terminal 100 in the MSC may be transmitted in the FIC. In the FIC, data is transmitted in a 32-byte FIB, and a fast information block (FIB) transmits a fast information group (FI) divided into a type and an extension according to the type of signaling information.

7 is a diagram illustrating an IP packet transmission scheme according to an embodiment of the present invention.

As illustrated in FIG. 7, the IP packet may be inserted into an MPEG-2 Transport Stream (TS), and RS (Reed-Solomon) coding may be applied and then transmitted through a stream mode subchannel of the DMB broadcasting network. Meanwhile, the MSC of FIG. 6 may use a stream mode subchannel and a packet mode subchannel for transmitting an application service.

Meanwhile, the signaling information transmitted from the FIC of FIG. 6 includes a service ID 710 of an IP streaming service provided through the DMB broadcasting network, information 720 about a subchannel through which the IP packet is transmitted, and IDs of the subchannels. 730, the type of a user application that can use the IP streaming service / QoS type 740 of the user application, and address information 750 of the default URL server. Information about the QoS type is transmitted along with the type of the user application.

The QoS types provided by the smart DMB service can be fixed bit rate CBR, real time variable bit rate rt-VBR, and non-real time variable bit rate nrt-VBR, ABR and UBR.

On the other hand, the packet ID (PID) and the like of the TS packet constituting the MPEG-2 TS are transmitted from the Default URL server to the DMB receiving terminal 100 as shown in Tables 1 to 3. The DMB receiving terminal 100 may receive a service by decoding only the PID of the corresponding service through the PID. For example, when the PID of a specific service is '10', the DMB receiving terminal 100 decodes TS packets having a PID of '10' among TS packets constituting the MPEG-2 TS. That is, the same video service may be transmitted through TS packets having the same PID.

FIG. 8 is a diagram illustrating the structure of an MPEG-2 TS packet shown in FIG. 7.

As shown in FIG. 8, the MPEG-2 TS packet includes a payload unit start indicator 810 and a PID 820 in a header.

If the value of the payload unit start indicator 810 is 1, this means that the corresponding TS packet has a start portion of an IP packet. That is, one IP packet may be segmented into a plurality of IP packets and transmitted in a plurality of TS packets. In this case, the TS packet having a value of 1 of the payload unit start indicator 810 contains a start portion of the plurality of segments in the payload.

FIG. 9 is a diagram illustrating a data format of an SID field of FIG. 7.

Referring to FIG. 9, the data format of the SID field is similar to the format defined in the MPEG-2 standard, but includes a data service component type (DSCTy) and a sub channel ID (SubChId) in the service component description field.

FIG. 10 is a diagram illustrating a data format of a subchannel field of FIG. 7, FIG. 11 is a diagram illustrating a data format of an SCIdS field of FIG. 7, and FIG. 12 is a diagram showing a data format of a UAType / QoS Type field of FIG. 7. FIG. 13 is a diagram illustrating a data format of a Default URL field of FIG. 7.

Through the UATy shown in FIG. 12, the DMB receiving terminal 100 may know whether the received IP packet is IP streaming or data for DMB broadcasting. In addition, the user application data is information on the QoS type, and may include information on a decoder capable of decoding the corresponding data.

The default URL of FIG. 12 carries address information of a default URL server.

9 through 12, the DMB receiving terminal 100 may know that IP streaming is being received through the DMB broadcasting network, and information for interpreting IP streaming may be obtained from a default URL server.

14 illustrates an IP packet transmission scheme according to an embodiment of the present invention.

Referring to FIG. 14, IP packets having IP addresses of 1, 2, 3, and 4 are transmitted in the IP stream. In addition, it is assumed that MPEG-2 TS packets are TS packets having PIDs of 10 and 11.

In FIG. 14, (a) shows that a packet ID (PID) of a TS packet constituting an MPEG-2 TS can be allocated to a plurality of IP packets having different IP addresses, and IP packets having the same IP address have the same PID. It can be assigned.

That is, IP packets with IP addresses 1 and 2 may be carried in TS packets with PID 10, and IP packets having the same IP address are not separately allocated to two or more PIDs.

In FIG. 14, (b) shows that one subchannel may transmit one or more PIDs, one PID may transmit an IP packet having one or more IP addresses, and a plurality of IP packets having the same IP address may be used. Indicates that it can transmit to one or more ports.

15 is a diagram illustrating a protocol stack of a smart DMB system according to an embodiment of the present invention.

In FIG. 15, (a) shows a TCP / IP layer structure, (b) shows a convergence service layer structure for a smart DMB service, and (c) shows a layer structure for IP over TS in a DMB broadcasting network. As shown in FIG. 15, DMB and 3W services for smart DMBs are transmitted through IP packets and may be handled separately in a link layer.

16 illustrates an MPEG-2 TS encryption scheme according to an embodiment of the present invention.

According to an embodiment of the present invention, the MPEG-2 TS packet may be encrypted and transmitted according to PID hopping of the TS packet, hopping of the IP address, or port hopping. Therefore, the DMB receiving terminal 100 needs to know the information on the encryption method, so that the corresponding service can be provided. At this time, the information on whether the encryption and the type of encryption may be provided to the DMB receiving terminal 100 in the Default URL server.

In FIG. 16, 1610 is an apparatus for providing DMB broadcasting 310. The DMB receiving terminal 100 requests authentication to the authentication server 1620. In this case, the authentication server 1620 may store identifier information of the authentication target terminals. The authentication server 1620 transfers the authentication request to the encryption server 1630 when the DMB receiving terminal 100 can use the corresponding service.

The encryption server 1630 requests the PID, IP address, port information, and the like to the Default URL server 1640. The encryption server 1630 receives information on the service from the Default URL server 1640. The encryption server 1630 transmits the decryption information to the DMB receiving terminal 100. In this case, the decryption information may include information about the hopping pattern of the PID, IP address and port information of the corresponding service. The default URL server 1640 may perform the same function as the default URL server 230 of FIG. 2. The encryption server 1630 or the default URL server 1640 may provide PID, IP address, port information, etc. to be used for encryption to the DMB broadcast providing device 1610, and the DMB broadcast providing device 1610 may reflect the service. Change PID, IP address and port information in encoder or TS multiplexing.

Meanwhile, the PID is a 13-bit value and may be hopped in a random pattern. 17 shows an example of a PID hopping pattern according to an embodiment of the present invention.

The encryption server 1630 may provide the DMB receiving terminal 100 with information about the PID at the current time, the PID at the next time, and when the PID is changed.

The encryption server 1630 transmits the decryption information (particularly, information about PID hopping) transmitted to the DMB receiving terminal 100 to the Default URL server 1640, so that the Default URL server 1640 maintains the latest information. . In addition, the encryption server 1630 transmits information on PID hopping to the DMB broadcast providing device 1610, so that TS multiplexing may be performed using the changed PID, IP address, port information, and the like.

18 illustrates another example of an encryption method of an MPEG-2 TS packet according to an embodiment of the present invention.

In FIG. 18, (a) shows that when the PID is switched from N to N + 1 (N is the value of PID), between the sections in which the PID is switched from N to N + 1, a TS packet having the PID of N and PID of N + 1 includes an interval in which the packets alternately exist.

That is, referring to FIG. 18, PIDs 2 and 1 may be cross-transmitted in a time interval 1820 between a time interval 1810 having a PID of 1 and a time interval 1830 having a PID of 2. That is, since a lost packet may occur when the PID suddenly changes from 1 to 2, the DMB broadcasting providing device 1610 crosses the TS packet having PID 2 and 1 in the time interval 1820 as shown in FIG. Can transmit In this case, the cross-transmitted packet may be a TS packet obtained by copying the last TS packet of the time interval 1810 having the PID 1 and the start TS packet of the time interval 1830 having the PID 2.

In FIG. 18, (b) shows that when the PID is hopped from 1 to 2, the packet is not transmitted in the switching section 1831. That is, since a lost packet may occur when the PID is suddenly converted from 1 to 2, the DMB broadcasting providing apparatus 1610 may not transmit the packet in the switching section 1851 as shown in FIG. The DMB receiving terminal 100 may recognize that hopping of the PID is generated through the switching period 1851. In FIG. 18B, 1840 and 1850 show examples showing a relationship between a packet rate bps and time.

19 illustrates statistical multiplexing of MPEG-2 TS packets according to an embodiment of the present invention.

FIG. 19 illustrates the concept of TS multiplexing in FIG. 16. Statistical multiplexing can be applied according to the related art. That is, the bit generation amount of each of the individual encoders may be adjusted when encryption such as PID hopping is applied together with the bit generation amount of each of the encoders Encoder 1, Encoder 2, Encoder 3. For example, statistical multiplexing can reduce the amount of bits generated when transmitting a lot of motion video, and vice versa.

The methods according to embodiments of the present invention may be implemented in the form of program instructions that can be executed through various computer means and recorded in a computer-readable medium. The computer readable medium may include program instructions, data files, data structures, etc. alone or in combination. The program instructions recorded on the medium may be those specially designed and constructed for the present invention or may be available to those skilled in the art of computer software.

As described above, the present invention has been described by way of limited embodiments and drawings, but the present invention is not limited to the above embodiments, and those skilled in the art to which the present invention pertains various modifications and variations from such descriptions. This is possible.

Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined by the equivalents of the claims, as well as the claims.

Claims (20)

delete In the method of receiving an IP (Internet Protocol) streaming for a smart DMB service of a digital multimedia broadcasting (DMB) receiving terminal,
Receiving an IP packet through a DMB broadcasting network, wherein the IP packet includes signaling information for receiving an IP streaming service through the DMB broadcasting network;
Accessing the default URL server through a communication network by using address information of a default uniform resource locator server included in the signaling information;
Transmitting the current location information of the DMB receiving terminal to the default URL server; And
Receive information on the IP streaming service that can be provided at the current location of the DMB receiving terminal from the default URL server, wherein the information about the IP streaming service includes a list of services that can be provided with DMB broadcasting in the DMB receiving terminal. Including the steps of:
The IP packet is,
Synchronization channel (Synch channel) for transmitting the synchronization information, Fast Information Channel (FIC) for transmitting the signaling information (Main Service Channel (MSC) for transmitting data for the IP streaming service) Transmitted through the DMB broadcasting network through a transmission frame,
The signaling information includes a service ID of an IP streaming service provided through the DMB broadcasting network, information on a subchannel through which the IP packet is transmitted, IDs of the subchannels, a type of a user application that can use the IP streaming service, Including QoS information of the user application and address information of the default URL server,
Receiving IP Streaming for Smart DMB Service. In the method of receiving an IP (Internet Protocol) streaming for a smart DMB service of a digital multimedia broadcasting (DMB) receiving terminal,
Receiving an IP packet through a DMB broadcasting network, wherein the IP packet includes signaling information for receiving an IP streaming service through the DMB broadcasting network;
Accessing the default URL server through a communication network by using address information of a default uniform resource locator server included in the signaling information;
Transmitting the current location information of the DMB receiving terminal to the default URL server; And
Receive information on the IP streaming service that can be provided at the current location of the DMB receiving terminal from the default URL server, wherein the information about the IP streaming service includes a list of services that can be provided with DMB broadcasting in the DMB receiving terminal. Including the steps of:
Information on the IP streaming service,
a) information A: 'information on an over-the-top (OTT) service transmitted through the communication network';
b) Information B: 'Information about the IP streaming service transmitted through the DMB broadcasting network or the whole service transmitted through the DMB broadcasting network-The whole service is provided through the DMB broadcasting, the IP streaming service, a web server or a media server. Contains available application services-about 'and
c) information C: comprising 'service information for another area of the DMB broadcasting network and handover information of the DMB broadcasting network';
Receiving IP Streaming for Smart DMB Service. The method of claim 3,
'The information A',
Including the name of the service, the type of the service, decoder information for decoding data associated with the service, encryption information, the IP address and port information for which the service is provided,
Receiving IP Streaming for Smart DMB Service. The method of claim 3,
'Information B',
It includes a reception region of the corresponding service, a frequency, a subchannel for receiving an IP streaming service, and a packet ID of a packet including the corresponding service.
Receiving IP Streaming for Smart DMB Service. The method of claim 3,
'Information C',
It includes a link number for providing a handover to the DMB receiving terminal, information about a frequency for each region and a service list for each region.
Receiving IP Streaming for Smart DMB Service. In the method of receiving an IP (Internet Protocol) streaming for a smart DMB service of a digital multimedia broadcasting (DMB) receiving terminal,
Receiving an IP packet through a DMB broadcasting network, wherein the IP packet includes signaling information for receiving an IP streaming service through the DMB broadcasting network;
Accessing the default URL server through a communication network by using address information of a default uniform resource locator server included in the signaling information;
Transmitting the current location information of the DMB receiving terminal to the default URL server; And
Receive information on the IP streaming service that can be provided at the current location of the DMB receiving terminal from the default URL server, wherein the information about the IP streaming service includes a list of services that can be provided with DMB broadcasting in the DMB receiving terminal. Including the steps of:
The IP packet is inserted into an MPEG-2 TS (Transport Stream), and after Reed-Solomon (RS) coding is applied, the IP packet is received through a stream mode subchannel of the DMB broadcasting network.
The packet ID (PID) of the TS packet constituting the MPEG-2 TS may be allocated to a plurality of IP packets having different IP addresses, and IP packets having the same IP address are assigned the same PID.
Receiving IP Streaming for Smart DMB Service. The method of claim 7, wherein
The MPEG-2 TS,
Encrypted according to PID hopping of the TS packet, hopping of the IP address, or a port hopping scheme,
Receiving IP Streaming for Smart DMB Service. 9. The method of claim 8,
PID hopping of the TS packet,
When the PID is switched from N to N + 1 (N is the value of PID), between the section where the PID is switched from N to N + 1, a TS packet having the PID of N and a packet having the PID of N + 1 Including this alternate interval,
Receiving IP Streaming for Smart DMB Service. In the method of receiving an IP (Internet Protocol) streaming for a smart DMB service of a digital multimedia broadcasting (DMB) receiving terminal,
Receiving an IP packet through a DMB broadcasting network, wherein the IP packet includes signaling information for receiving an IP streaming service through the DMB broadcasting network;
Accessing the default URL server through a communication network by using address information of a default uniform resource locator server included in the signaling information;
Transmitting the current location information of the DMB receiving terminal to the default URL server;
Receive information on the IP streaming service that can be provided at the current location of the DMB receiving terminal from the default URL server, wherein the information about the IP streaming service includes a list of services that can be provided with DMB broadcasting in the DMB receiving terminal. Making;
Checking a list of services that can be provided with the DMB broadcast; And
a) constructing an integrated service list in which the DMB broadcasting and the application service are fused, or b) constructing a web browser in which a web page and 'the DMB broadcasting and the application service' are meshed up;
Receiving IP Streaming for Smart DMB Service. In the method of receiving an IP (Internet Protocol) streaming for a smart DMB service of a digital multimedia broadcasting (DMB) receiving terminal,
Receiving an IP packet through a DMB broadcasting network, wherein the IP packet includes signaling information for receiving an IP streaming service through the DMB broadcasting network;
Accessing the default URL server through a communication network by using address information of a default uniform resource locator server included in the signaling information;
Transmitting the current location information of the DMB receiving terminal to the default URL server; And
Receive information on the IP streaming service that can be provided at the current location of the DMB receiving terminal from the default URL server, wherein the information about the IP streaming service includes a list of services that can be provided with DMB broadcasting in the DMB receiving terminal. Including the steps of:
The list of services that can be provided with the DMB broadcast,
As the DMB receiving terminal moves, an updated list is provided in each of a first zone, a second zone, and a shaded zone of the DMB broadcasting network.
Receiving IP Streaming for Smart DMB Service. In the smart DMB service providing system, IP (Internet Protocol) streaming providing method using a mobile broadcast convergence platform,
Broadcasting, by a DMB broadcasting providing apparatus, a real-time DMB broadcasting and an IP packet through a DMB broadcasting network, wherein the IP packet includes signaling information for receiving an IP streaming service through the DMB broadcasting network;
Receiving, by a default URL server, current location information of the DMB receiving terminal from the DMB receiving terminal receiving the IP packet; And
Information on an IP streaming service that the default URL server can provide at a current location of the DMB receiving terminal, wherein the information on the IP streaming service includes a list of services that can be provided with DMB broadcasting in the DMB receiving terminal; Transmitting to the DMB receiving terminal;
The list of services that can be provided with the DMB broadcast,
As the DMB receiving terminal moves, an updated list is provided in each of a first zone, a second zone, and a shaded zone of the DMB broadcasting network.
A method of providing IP streaming using a mobile broadcasting convergence platform. In the smart DMB service providing system, IP (Internet Protocol) streaming providing method using a mobile broadcast convergence platform,
Broadcasting, by a DMB broadcasting providing apparatus, a real-time DMB broadcasting and an IP packet through a DMB broadcasting network, wherein the IP packet includes signaling information for receiving an IP streaming service through the DMB broadcasting network;
Accessing the default URL server through a communication network by using the address information of a default uniform resource locator server included in the signaling information, by the DMB receiving terminal receiving the IP packet;
Transmitting, by the DMB receiving terminal, current location information of the DMB receiving terminal to the default URL server; And
Information on an IP streaming service that the default URL server can provide at a current location of the DMB receiving terminal, wherein the information on the IP streaming service includes a list of services that can be provided with DMB broadcasting in the DMB receiving terminal; Transmitting to the DMB receiving terminal;
The list of services that can be provided with the DMB broadcast,
As the DMB receiving terminal moves, an updated list is provided in each of a first zone, a second zone, and a shaded zone of the DMB broadcasting network.
A method of providing IP streaming using a mobile broadcasting convergence platform. delete A DMB broadcast providing apparatus for broadcasting a real-time DMB broadcast and an IP packet through a DMB broadcasting network, wherein the IP packet includes signaling information for receiving an IP streaming service through the DMB broadcasting network; And
Receives the current location information of the DMB receiving terminal from the DMB receiving terminal receiving the IP packet, information about the IP streaming service that can be provided at the current location of the DMB receiving terminal-The information on the IP streaming service is received in the DMB A terminal including a list of services that can be provided together with a DMB broadcast; and a default URL server for transmitting to the DMB receiving terminal.
The DMB broadcast providing device,
After inserting the IP packet into MPEG-2 TS (Transport Stream), applying RS (Reed-Solomon) coding to the MPEG-2 TS, MPEG-2 to which RS coding is applied through the stream mode subchannel of the DMB broadcasting network. A DMB transmitter for transmitting a TS to the DMB receiving terminal;
A 3W transmitter for transmitting real-time broadcast data through a mobile internet network;
A data transmitter for transmitting push data that can be combined with the real time DMB broadcast or the real time broadcast data to the mobile Internet network; And
Including VoD / AoD transmitter,
Smart DM service providing system. 16. The method of claim 15,
Information on the IP streaming service,
a) Information A: 'Information about the Over-the-Top (OTT) Service transmitted through the communication network'
b) Information B: 'Information about the IP streaming service transmitted through the DMB broadcasting network or the whole service transmitted through the DMB broadcasting network-The whole service is provided through the DMB broadcasting, the IP streaming service, a web server or a media server. Contains available application services-about 'and
c) information C: comprising 'service information for another area of the DMB broadcasting network and handover information of the DMB broadcasting network';
Smart DM service providing system. A DMB module for receiving real-time DMB broadcasting and IP packets through a DMB broadcasting network, wherein the IP packets include signaling information for receiving an IP streaming service through the DMB broadcasting network;
A GPS module for obtaining location information of a current location;
A control unit; And
Memory,
The control unit may include a) accessing the default URL server through a communication network using address information of a default uniform resource locator (URL) server included in the signaling information, and b) DMB to the default URL server. A function of transmitting current location information of a receiving terminal, and c) information on an IP streaming service that can be provided at a current location of the DMB receiving terminal from the default URL server. Includes a list of services available with DMB broadcasts-configured to perform the function of receiving
The memory stores a list of services that can be provided with the DMB broadcast,
DMB receiving terminal. 18. The method of claim 17,
The control unit,
Through the Open API (Application Programming Interface) based web browser, the DMB broadcast and configured to provide a service that can be provided with the DMB broadcast to the user,
DMB receiving terminal. 18. The method of claim 17,
The control unit,
Check the list of services that can be provided with the DMB broadcast,
a) construct an integrated service list in which the DMB broadcasting and application services are converged;
b) configured to perform a function of constructing a web browser in which a web page and 'the DMB broadcast and the application service' are meshed up;
DMB receiving terminal. 18. The method of claim 17,
The list of services that can be provided with the DMB broadcast includes a 'list updated in each of a first zone, a second zone, and a shaded zone of the DMB broadcasting network as the DMB receiving terminal moves.'
The control unit updates the service list at the current location with the service list at the moved location based on the updated list.
DMB receiving terminal.

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