KR20090018559A - Broadcast system for providing localcasting service based ip tunneling and method for excuting the system - Google Patents

Abstract

A broadcast system for providing a local casting service based on ip tunneling and a method for executing the system are provided to discriminate plural data services regardless of the type of a DAB(Digital Audio Broadcasting) system by using an IP address to a narrowband DMB data channel. A data packet receiving unit(201) assigns an IP address and IP data service information for data service to a DMB data server. For example, an IP address is transmitted to plural users or providers by being assigned in type of a multicast, unicast or anycast address according to the purpose that a user consumes an IP data service. The IP address is assigned to the DMB data sever by considering one among IP version, a type of IP address, IP subnet, transport protocol type and port number. A data packet receiver receives plural IP data packets from the DMB data sever by corresponding to the IP address and the IP data service information, and an IP data transmitter(202) generates an IP data service guide for a watcher to select or use an IP data service by corresponding to an IP data packet.

Description

DMB broadcasting system providing local casting service based on IP tunneling and local casting service providing method using the system {BROADCAST SYSTEM FOR PROVIDING LOCALCASTING SERVICE BASED IP TUNNELING AND METHOD FOR EXCUTING THE SYSTEM}

The present invention provides a DMB broadcasting system and a system for providing a local casting service based on IP tunneling, which provides a user with various surrounding area information based on IP tunneling of a digital media broadcast (DMB) broadcasting network. It relates to a local casting service providing method using.

The present invention is derived from the research conducted as part of the IT growth engine technology development project of the Ministry of Information and Communication and the Ministry of Information and Telecommunications Research and Development. [Task No. 2006-S-082-02, Research Title: Development of Custom-Viewable DMB Technology] (Development of Digital Multimedia Broadcasting Technology for Personalized Broadcasting), Research Period: 2007.03.01 ~ 2008.02.28]

With the rapid development and proliferation of Internet technology today, next-generation communication networks are centered around the Internet Protocol (“IP”)-based Core Network and all-IP that integrates various access networks. It is developing into a network structure. However, in order to provide various services including DMB broadcasting and provide purpose-oriented services to a specific number by using an IP network, a broadcaster must combine wired and wireless communication environments, and provide data interworking services under DAB standard environment. TPEC, BWS, MOT slide show, etc.), there is a problem to develop a variety of interactive services and revenue model data services. In addition, in order to service DMB broadcasting in the wired and wireless communication environment, there is a problem in that a limited authority for using frequency for DMB broadcasting must be obtained. In addition, there is a problem that the broadcast viewer has to pay a communication fee for billing payment and information use by one or more service usage registration.

Accordingly, the present invention can simultaneously provide a plurality of DMB broadcasting services, such as a multi-protocol encapsule and a multimedia service in a digital environment, and can efficiently use a limited frequency for DMB broadcasting. A new DMB broadcasting system and a DMB broadcasting service method using the system are proposed.

An object of the present invention is to provide a variety of information around the region to a broadcast viewer using a DMB broadcasting network.

In addition, an object of the present invention is to provide a DMB broadcasting service using a non-DMB viewing terminal previously distributed.

In addition, an object of the present invention is to provide a broadcast integration and convergence service in response to a request of a broadcast viewer by providing important trigger information to the multi-view service as an IP data service.

The DMB broadcasting server according to the present invention generates a data packet receiver for receiving an IP data packet from a DMB data server and an IP data service guide corresponding to the received IP data packet, and generates the generated IP data service guide and the IP data. IP packet transmission unit for transmitting the packet to the DMB broadcast relay server through the IP tunneling method.

In addition, according to an embodiment of the present invention, the DMB broadcast relay server is an IP data packet receiver for receiving an IP data packet from a DMB broadcast server, extracts an IP data service guide from the received IP data packet, and the extracted IP data service guide A localcasting IP data packet generator for generating a localcasting IP data packet according to a localcasting IP address and IP data service information included in the present invention, and viewing the generated localcasting IP data packet corresponding to the localcasting IP address. It includes a transmission unit for transmitting to the terminal.

In addition, according to an embodiment of the present invention, the DMB viewing terminal includes a packet receiving unit for receiving an IP data service guide and a plurality of localcasting IP data packets from a DMB broadcasting relay server, and an IP transmitting the IP data service guide to a second DMB viewing terminal. A packet for receiving service information corresponding to the IP data service guide from a data service guide transmission unit and the second DMB viewing terminal, and transmitting a local casting IP data packet associated with the received service information to the second DMB viewing terminal. It includes a transmission unit.

Receiving an IP data packet from a DMB broadcast server, extracting an IP data service guide from the received IP data packet according to another example of the present invention, a localcasting IP address included in the extracted IP data service guide And generating a localcasting IP data packet according to IP data service information, and transmitting the generated localcasting IP data packet to a DMB viewing terminal corresponding to the localcasting IP address. The guide may include a service list for the DMB broadcast.

In addition, according to another example of the present invention, a recording medium includes an IP address area including an IP address assigned to a DMB broadcast relay server, a service list area for the DMB broadcast, and a packet generation rule associated with generation of an IP data packet. The DMB broadcast relay server receives an IP data packet from a DMB broadcast server, generates a localcasting IP data packet based on the service list and the packet generation rule extracted from the received IP data packet, and generates a DMB. Characterized in that the transmission to the viewing terminal.

According to the present invention, by using an IP address for a narrow DMB data channel, a plurality of data services can be easily distinguished without depending on the DAB (Digital Audio Broadcasting) system standard.

In addition, since the DMB broadcast service can be distinguished by an IP address, DMB broadcast service providers can easily insert and replace data.

In addition, there is an effect that the DMB broadcasting service is available by using the pre-distributed non-DMB viewing terminal.

In addition, there is an effect that the user can watch the DMB broadcast without paying a communication fee for separate information delivery.

In addition, since DMB broadcasters can reuse frequencies by minimizing channel idleness, it is possible to expect profits from frequency redistribution.

Hereinafter, a DMB broadcasting system for providing a local casting service based on IP tunneling and a method for providing a local casting service using the system will be described in detail with reference to the accompanying drawings.

Among the terms used below, the DMB viewing terminals 410, 420, and 430 are PDC (Personal Digital Cellular) phones equipped with Digital Multimedia Broadcasting (DMB) viewing, PCS (Personal Communication Service) phones, and PHS (Personal Handyphone System). Phones, CDMA-2000 (1X, 3X) phones, WCDMA (Widebans CDMA) phones, Dual Band / Dual Mode phones, Global Standard for Mobile (GSM) phones, Mobile Broadband System (MBS) phones , Handheld devices that may include communication functions such as digital multimedia broadcasting (DMB) phones, smart phones, mobile phones, etc., Public Switched Telephone Network (PSTN) terminals, Session Initiation Protocol (SIP), Media Gateway Control Protocol (MGCP) Handheld-based wireless communication devices of all kinds, including MEGACO (Media Gateway Control), Personal Digital Assistant (PDA), Hand-Held PC, Notebook Computer, Laptop Computer, WiBro Terminal, etc. As a portable electric and electronic device, CDMA (Code Division M) It is interpreted as a concept of collectively a terminal capable of performing certain arithmetic operations by mounting an ultiplexing access module and a microprocessor capable of performing multimedia playback functions.

In addition, according to the present invention, in order to provide a local casting service based on IP tunneling, servers or devices connected to the network 150 may be connected in a wireless and wired communication manner to exchange data with each other. For example, the wireless communication method is a radio station that relays communication between devices, and is used as a functional unit or device for transmitting and receiving information between a base station (BS) relaying transmission and reception radio waves, a plurality of heterogeneous communication networks, or a homogeneous communication network. It may include a gateway (Gateway). In addition, the wired communication method includes at least one of an IP protocol-based Internet network, FTTH / O / C (broadband network), ATM (broadband communication network), CATV network, as well as LAN, ADSL, Ethernet Firewall & VPN, and Loadbalancer & CDN. It may include.

1 is a diagram illustrating a DMB broadcasting system for providing a local casting service based on IP tunneling according to the present invention.

As shown in FIG. 1, the system 1000 according to the present invention includes a DMB data server 100, a DMB broadcasting server 200, a DMB broadcasting relay server 300, a general DMB viewing terminal 410, and an in-vehicle DMB. A viewing terminal 520, a non-DMB viewing terminal 530, and a network 150.

The DMB data server 100 receives an IP address and IP data service information from the DMB broadcast server 200. The DMB data server 100 collects data service information from a predetermined server and a device, and generates an IP data packet for each data service information according to the assigned IP address.

For example, data service information such as local advertisements and local weather is collected from predetermined data providing servers 110 and 120, and IP data packets 111 and 121 are generated for each data service information. In another example, the user-generated data of the UCC is collected from the user's mobile terminal 130 to generate an IP data packet 131. As another example, information on the securities / news is collected from the information management server 140 to generate an IP data packet 141.

Accordingly, the DMB data server 100 may generate an IP data packet using data service information stored and managed to provide a predetermined data service, such as the data providing servers 110 and 120 and the information management server 140. In addition, the user may generate the data service information (UCC) directly produced by the user using the mobile terminal 130 as an IP data packet.

The DMB data server 100 transmits the generated IP data packet according to a program scheduling schedule of the DMB broadcasting server 200.

The DMB broadcasting server 200 allocates an IP address and IP data service information of the DMB data server 100. IP data service information is defined by TCP, UDP, and IP packet size, data rate, maximum or minimum data bit rate, and average bit rate.

The DMB broadcasting server 200 prepares an IP data service guide 222 for the data service information so that the broadcast viewer can select and consume the data service information. The IP data service guide 222 includes information on IP address assignment and authorization so that the DMB broadcaster can insert or replace a local casting service.

The DMB broadcast server 200 encapsulates the IP data packet, including the IP data service guide 222, by the IP tunneling method and transmits the encapsulated IP data to the DMB broadcast.

The IP encapsulator 210 encapsulates the IP data packet into IP tunneling, which is a DMB broadcast standard, and transmits the encapsulated IP data packet to the DMB broadcast.

The data service guider 220 generates a dummy IP data packet 221 for the corresponding IP data service information in order to reduce reassembly time of the DMB broadcast.

The interactive data server 230 transmits the actual video stream to the DMB viewing terminal in response to the broadcast viewer's request to participate in the multiview service.

The DMB broadcast relay server 300 extracts a local casting IP address by extracting and analyzing the IP data service guide 222 of the DMB broadcast traffic 320 using an exchanger 330. The DMB broadcast relay server 300 replaces (generates) the extracted IP address, IP data service information, and IP data packet with a local casting IP data packet.

The exchanger 330 analyzes the DMB broadcast traffic and the IP data service guide and extracts the IP address allocated for the local casting service. The exchanger 330 replaces the extracted IP address, IP data service information, and IP data packet with a local casting IP data packet.

The general DMB viewing terminal 410 analyzes the IP data service guide in the same manner as the IP data service guide extraction method of the DMB broadcasting relay server 300 to receive the IP data service desired by the broadcast viewer, and receives IP addresses (IPv4, IPv6). And the service area 400 corresponding to the IP address base.

The in-vehicle DMB viewing terminal 520 sets up the service area 500, and serves as a server in the vehicle 510 to relay the IP data packet to the non-DMB viewing terminal 530 of the passenger.

The non-DMB viewing terminal 530 receives the IP data packet from the in-vehicle DMB viewing terminal 520 corresponding to the IP data service information to participate.

2 is a diagram illustrating a DMB broadcasting server providing a local casting service based on IP tunneling of a DMB broadcasting network according to an exemplary embodiment of the present invention.

As shown in FIG. 2, the DMB broadcasting server 200 according to the present invention includes a data packet receiver 201 and an IP data transmitter 202.

The data packet receiver 201 allocates an IP address (subnet) and IP data service information for a data service to the DMB data server.

In one example, the IP address may be assigned an IPv4 address (123.123.123.123.123.123.0 / 24) or an IPv6 address (FEDC: BA98: 7654: 3210: FEDC: BA98: 7654: 3210,2002: 230 :: / 24). Can be.

As another example, an IP address may be assigned to an address type of multicast, unicast, and anycast according to the purpose of consuming an IP data service, and may be delivered to a specific number, individuals, and businesses. .

In another example, the IP address may be allocated in consideration of at least one of an IP version, an IP address type, an IP subnet, a transport protocol type, and a port number.

The IP data service information includes an IP address and a packet generation rule for allocating to the DMB broadcast relay server. In one example, the packet generation rule may define at least one of a data transmission bit rate, a data packet size, an average bit rate, and a maximum / minimum data bit rate of TCP, UDP, and IP data packets.

The data packet receiver 201 receives a plurality of IP data packets from the DMB data server corresponding to the IP address and the IP data service information.

The IP data transmitter 202 generates an IP data service guide so that the broadcast viewer can select and consume an IP data service corresponding to the IP data packet.

In one example, the IP data service guide may be generated in binary or XML form using information received from the DMB data server and a self analysis generator (not shown).

The IP data service guide is generated including information on IP address assignment and authorization so that the DMB broadcaster can insert or replace a local casting service.

According to the present invention, when the DMB broadcast service provider inserts or replaces a local casting service, in order to reduce reassembly time of the DMB broadcast, dummy IP data packets corresponding to IP data service information of the first DMB broadcast service provider (Dummy IP Data) Create using the data service guider.

The IP data service guide generates a dummy IP data packet as an IP data packet using a well-known IP address (selected by a DMB provider) so that all receiving terminals can basically receive it. At this time, the IP address is assigned to 224.0.0.1, FF02 :: 1: 33: :), and so on.

The IP data transmitter 202 encapsulates the IP data packet including the IP data service guide by an IP tunneling method and transmits the encapsulated IP data to the DMB broadcast.

Accordingly, the broadcast server according to the present invention can define a data service to be provided in advance when the DMB broadcast channel details are different for each DMB broadcast relay provider, and accordingly the bandwidth service fee for each third party data service according to the data service information. Can be calculated In addition, a data channel revenue model can be created through a contract for data service replacement authority of a local casting service.

3 is a diagram illustrating a DMB broadcast relay server that provides a local casting service based on IP tunneling of a DMB broadcasting network according to an embodiment of the present invention.

As shown in FIG. 3, the DMB broadcast relay server 300 includes an IP data packet receiver 301, a local casting IP data packet generator 302, and a transmitter 303.

The IP data packet receiver 301 receives an IP data packet from the DMB broadcast server.

Localcasting IP data packet generator 302 extracts the IP data service guide of the negotiated address using an exchanger, and then generates a localcasting IP data packet according to the corresponding localcasting IP address and IP data service information. do.

The transmitting unit 303 replaces the extracted localcasting IP address, IP data service information, and IPcasting packet with a localcasting IP data packet to be provided.

According to the DMB broadcaster, the method of differently replacing the IP data packet is more advantageous for reassembling the DMB broadcast traffic. Accordingly, according to the service method, the IP data service guide may allocate only an IP address and newly generate an IP data packet using the DMB data encapsulation data.

The transmitting unit 303 sends the local casting IP data packet to the DMB viewing terminal corresponding to the local casting IP address and IP data service information.

4 is a diagram illustrating a DMB viewing terminal providing a local casting service based on IP tunneling of a DMB broadcasting network according to an example of the present invention.

As shown in FIG. 4, the DMB viewing terminal 400 according to the present invention includes a packet receiver 401, an IP data service guide transmitter 402, and a packet transmitter 403.

The packet receiver 401 receives an IP data service guide and a plurality of localcasting IP data packets from a DMB broadcast relay server.

The IP data service guide transmitter 402 transmits the received IP data service guide to the non-DMB viewing terminal.

The packet transmitter 403 receives service information corresponding to the IP data service guide from the non-DMB viewing terminal (second DMB viewing terminal), and transmits a local casting IP data packet associated with the service information to the non-DMB viewing terminal. .

According to the present invention, the DMB viewing terminal 400 may use the IP data service desired by the user by analyzing the IP data service guide in the same manner as the DMB broadcasting relay server described with reference to FIG. 3. The IP address generation method of the DMB viewing terminal for receiving data packets of IPv4 and IPv6 conforms to the standards of IPv4 and IPv6. The DMB viewing terminal 400 may set a service zone corresponding to the subnet and address base of the IPv4 and IPv6.

In addition, the data service using the IP according to the present invention has the advantage that can be distinguished variously and accurately according to the standard method provided by the IP service. In addition, if the IP data is an IP delivery environment, retransmission 500 is easy.

For example, when the DMB viewing terminal is used in a vehicle, the DMB viewing terminal may serve as a server to relay an IP data packet to a non-DMB viewing terminal of a passenger in a vehicle.

Therefore, even if the mobile terminal does not have a separate DMB reception function, the first full IP data packet can extract the DMB IP tunneling packet encapsulated, thereby participating in the IP data service.

5 is a diagram illustrating a process of generating and replacing local casting data according to an example of the present invention.

As shown in FIG. 5, the localcasting IP data packet generator 302 of the DMB broadcast relay server 300 receiving the DMB broadcast 522 for a local-casting service may use an exchanger ( After extracting the IP data service guide 521 of the negotiated address using the Exchanger 530, a local casting IP data packet 532 is generated according to the corresponding local casting IP address and IP data service information. The generated local casting IP data packet 532 is exchanged 334 between the dummy IP data packet and the local casting IP data packet according to a method contracted with the DMB broadcaster.

As another example, when the DMB broadcast relay server has only IP data service guide information such as local casting IP address and IP data service information, the local broadcasting IP data packet is inserted into the DMB broadcasting 522 and then the IP encapsulation. DMB broadcast traffic generated by reassembly can be retransmitted.

Alternatively, by changing the IP data service guide to reassemble IP encapsulation, DMB broadcast traffic can be resent.

6 is a diagram illustrating a process of performing an in-vehicle local casting service based on IP tunneling of a DMB broadcasting network according to an embodiment of the present invention.

As shown in FIG. 6, the vehicle DMB viewing terminal 620 extracts and consumes the IP data service guide 621 in the in-vehicle region 610. At this time, when there is a participation request 631 from the non-DMB viewing terminal 630 to the IP data service, the access is connected to the representative vehicle DMB viewing terminal 620 using the communication network (611), and receives the IP data service guide request. (632). The representative vehicle DMB viewing terminal 620 forwards 612 the already received IP data service guide 621 in response to the request. The non-DMB viewing terminal 630 transmits 633 the IP data service information to be participated in the IP data service guide 621 to the vehicle DMB viewing terminal 620. The vehicle DMB viewing terminal 620 relays and transmits 613 a corresponding IP data packet to the non-DMB viewing terminal 630 according to the received IP data service information.

7 is a diagram illustrating an IP data service guide for recognizing a local casting service according to an example of the present invention.

As shown in FIG. 7, in generating a guide for an IP data service guide and a guide for a local-casting service, the contents are provided by using a binary and an extensible markup language (XML). do. According to the present invention, a service list 710 for service recognition is defined for the binary and XML.

That is, the service list 710 may be defined a plurality of service information (711). In one example, a service location, a service name, a service creator, and a service validity period may be defined.

In addition, the service list 710 manages a plurality of service additional information 712 for the local casting service. For example, the ID, service additional location, and time information may be managed.

In addition, the service list 710 manages the service replacement information 713. For example, the service replacement location, service replacement name, service replacement creator, and service replacement validity period may be managed.

In addition, the service list 710 manages information for classifying IP data packets. For example, the IP address type 714, the IP version 715, the transprotocol type 716, and the port number 720 may be managed.

In addition, the service list 710 manages information for a property 721 of the IP data packet. In one example, the maximum / minimum bit rate, average bit rate, packet size, packet number, packet time stamp, and the like are managed. Thus, convenience of insertion and replacement of local casting can be provided.

As described above, the IP data service guide according to the present invention may define a service list to recognize a local casting service. To this end, the IP data service guide may include an IP address area including an IP address assigned to the DMB broadcast relay server, a service list area for DMB broadcasting, and a packet generation rule area associated with generation of an IP data packet.

Accordingly, the DMB broadcast relay server may receive an IP data packet from the DMB broadcast server, generate a localcasting IP data packet based on the service list and the packet generation rule extracted from the IP data packet, and transmit the packet to the DMB viewing terminal.

8 is a diagram illustrating a process of providing a multi-view service based on IP tunneling of a DMB broadcasting network according to an embodiment of the present invention.

First, a "MultiView" service is a service that can provide a plurality of AV streams generated in time and space with the same purpose according to inputs of individual broadcast viewers. For example, in the case of sports and music shows, video streams taken by a plurality of cameras are distributed to the viewer in time by the producer. However, among broadcast viewers, there may be a demand for selectively viewing a scene desired by an individual rather than an image produced by a producer.

To this end, the multi-viewer 810 according to the present invention captures the image streams 821, 822, 823, and 824 to be provided to the multi-view service 800 at regular intervals. In this case, the predetermined period is selected according to the packet size, the data bit rate, and the like, which are IP data service information.

The captured image 820 is compressed using an image compression technique such as JPEG and then generated as IP data packets 811, 812, 813, and 814. For example, if there are four video streams, the IP data streams 815, 816, 817, and 818 captured in each video stream 821, 822, 823, and 824, and then compressed into IP data packets are It becomes four kinds. At this time, the IP address and IP data service information of the IP data packets 811, 812, 813, and 814 for the data service are allocated from the DMB broadcasting company. The IP data service guide also describes the association for four IP data packets 811, 812, 813, and 814.

As such, the IP data packets 811, 812, 813, and 814 for the multi-view service 800 are provided to the DMB viewing terminal 830 through the DMB broadcasting network 840, and the DMB broadcasting terminal 830 may be a producer. The produced and sent DMB broadcast video can be received. That is, the DMB viewing terminal 830 may request to participate in the multi-view service and receive the IP data service of the corresponding DMB broadcast, thereby watching a plurality of image capture streams displayed periodically and continuously.

For example, when a broadcast viewer requests participation in a multi-view service, a plurality of video capture streams that are periodically and continuously displayed may be viewed using an IP data service of a corresponding DMB broadcast. When the broadcast viewer requests a multi-view video, the DMB viewing terminal 830 connects to the interactive data server through a communication network, receives the requested actual video streams 831, 832, 833, and 834 to view the DMB. Display on the terminal 830.

Accordingly, the MultiView Service 800 provided based on IP Tunneling of the DMB broadcasting network according to the present invention provides IP data with important trigger information that a broadcast viewer can participate in the multiview service. By providing it as a service, it is possible to provide a broadcast convergence service at the request of a broadcast viewer.

For example, by receiving various convenience information, various sales and event information, etc. associated with the department store shopping through a local casting service using DMB IP tunneling, it can be easily obtained using its own DMB viewing terminal 830, the received Information can be viewed in the form of a multi-view service. Therefore, the purchasing power of the broadcast viewer can be increased.

As another example, the broadcast participation affiliated broadcast content associated with sports viewing can be viewed in the form of a multi-view service using their DMB viewing terminal 830, thereby maximizing the fun and enjoyment of watching sports. have.

Through the above description, as an applicable example of the multi-view service 800 provided based on IP tunneling (IP Tunneling) of the DMB broadcasting network according to the present invention, the department store shopping and watching sports, but the broadcast viewers The multi-view service 800 may be utilized in various fields by using the DMB viewing terminal 830.

9 is a diagram illustrating a method for providing a local casting service based on IP tunneling of a DMB broadcasting network according to another example of the present invention.

In step S901, an IP data packet is received from the DMB broadcasting server.

In step S902, the IP data service guide of the negotiated address is extracted using an exchanger.

In step S903, a localcasting IP data packet is generated according to the corresponding localcasting IP address and IP data service information. The IP data service guide may include an IP address and a packet generation rule assigned to the DMB broadcast relay server.

In one example, the packet generation rule may include at least one of a data transmission bit rate, a data packet size, an average bit rate, a highest bit rate, and a lowest bit rate of the IP data packet. The IP data service guide may be configured in binary or XML format.

The localcasting IP address, IP data service information, and IP data packet extracted in step S904 are replaced (generated) with a localcasting IP data packet to be provided.

In step S905, the localcasting IP data packet is transmitted to the DMB viewing terminal corresponding to the localcasting IP address and IP data service information.

For example, an IP data service guide is inserted into an IP data packet, and the IP data packet is encapsulated based on IP tunneling and resent by DMB broadcasting.

According to the local casting service using IP tunneling of the DMB broadcasting network according to the present invention described above, the broadcast viewer can be provided with the DMB viewing service without paying a separate information communication fee.

In addition, the service may be activated through a contract of channel fee and authority fee between the local casting service provider and the broadcaster. In addition, broadcasters can recycle frequencies by minimizing channel idle rates. Therefore, it is possible to obtain revenue in terms of frequency redistribution.

So far, a method of providing a local casting service based on IP tunneling of a DMB broadcasting network according to the present invention has been described, and the DMB broadcasting server, the DMB broadcasting relay server, and the DMB viewing terminal described above with reference to FIGS. Since the description is applicable to the present method as it is, a detailed description thereof will be omitted.

The IP data service guide according to the embodiment of the present invention can be recorded on a recording medium that can be read through various computer means.

In addition, a method for providing a local casting service based on IP tunneling of a DMB broadcasting network according to an embodiment of the present invention may be implemented in the form of program instructions that can be executed by 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. Program instructions recorded on the media may be those specially designed and constructed for the purposes of the present invention, or they may be of the kind well-known and available to those having skill in the computer software arts. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tape, optical media such as CD-ROMs, DVDs, and magnetic disks, such as floppy disks. Magneto-optical media, and hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like. Examples of program instructions include not only machine code generated by a compiler, but also high-level language code that can be executed by a computer using an interpreter or the like.

In the present invention as described above has been described by the specific embodiments, such as specific components and limited embodiments and drawings, but this is provided to help a more general understanding of the present invention, the present invention is not limited to the above embodiments. For those skilled in the art, various modifications and variations are possible from such description.

Therefore, the spirit of the present invention should not be limited to the described embodiments, and all the things that are equivalent to or equivalent to the claims as well as the following claims will belong to the scope of the present invention. .

1 is a diagram illustrating a DMB broadcasting system for providing a local casting service based on IP tunneling according to the present invention.

2 is a diagram illustrating a DMB broadcasting server providing a local casting service based on IP tunneling of a DMB broadcasting network according to an exemplary embodiment of the present invention.

3 is a diagram illustrating a DMB broadcast relay server that provides a local casting service based on IP tunneling of a DMB broadcasting network according to an embodiment of the present invention.

4 is a diagram illustrating a DMB viewing terminal providing a local casting service based on IP tunneling of a DMB broadcasting network according to an example of the present invention.

5 is a diagram illustrating a process of generating and replacing local casting data according to an example of the present invention.

6 is a diagram illustrating a process of performing in-vehicle local casting service based on IP tunneling of a DMB broadcasting network according to an embodiment of the present invention.

7 is a diagram illustrating an IP data service guide for recognizing a local casting service according to an example of the present invention.

8 is a diagram illustrating a process of providing a multi-view service based on IP tunneling of a DMB broadcasting network according to an embodiment of the present invention.

9 is a diagram illustrating a method for providing a local casting service based on IP tunneling of a DMB broadcasting network according to another example of the present invention.

<Explanation of symbols for the main parts of the drawings>

201: data packet receiving unit

301: IP data packet receiving unit

302: local casting IP data packet generation unit

303: sending part

401: packet receiving unit

402: IP data service guide transmission unit

403: packet transmission unit

Claims (12)

In the DMB broadcasting server, A data packet receiver for receiving an IP data packet from a DMB data server; And An IP data transmitter for generating an IP data service guide corresponding to the received IP data packet and transmitting the generated IP data service guide and the IP data packet to a DMB broadcast relay server through IP tunneling. DMB broadcasting server comprising a. The method of claim 1, The IP data service guide includes an IP address assigned to the DMB broadcast relay server. The method of claim 2, And the IP address is allocated in consideration of at least one of an IP version, an IP address type, an IP subnet, a transport protocol type, and a port number. The method of claim 1, The IP data service guide includes a packet generation rule, The packet generation rule includes at least one of a data transmission bit rate, a data packet size, an average bit rate, a highest bit rate, and a lowest bit rate of the IP data packet. The method of claim 1, The IP data service guide is a DMB broadcast server, characterized in that configured in the form of binary or XML. In the DMB broadcast relay server, An IP data packet receiver configured to receive an IP data packet from a DMB broadcast server; Generating a local casting IP data packet extracting an IP data service guide from the received IP data packet and generating a local casting IP data packet according to a local casting IP address and IP data service information included in the extracted IP data service guide. part; And Sending unit for transmitting the generated local casting IP data packet to the DMB viewing terminal corresponding to the local casting IP address DMB broadcast relay server comprising a. The method of claim 6, The local casting IP data packet generation unit generates the local casting IP data packet by replacing with the dummy IP data packet. The method of claim 6, The local casting IP data packet generation unit changes the data service guide and performs the IP encapsulation reassembly to generate the local casting IP data packet. The method of claim 6, The IP data service guide includes a service list for the DMB broadcast. And the service list includes at least one of service information, service additional information, service replacement information, classification information of an IP data packet, and attribute information of an IP data packet. A packet receiver configured to receive an IP data service guide and a plurality of local casting IP data packets from a DMB broadcast relay server; An IP data service guide transmitter for transmitting the IP data service guide to a second DMB viewing terminal; And A packet transmitter configured to receive service information corresponding to the IP data service guide from the second DMB viewing terminal and to transmit a local casting IP data packet associated with the received service information to the second DMB viewing terminal; DMB viewing terminal comprising a. Receiving an IP data packet from a DMB broadcast server; Extracting an IP data service guide from the received IP data packet; Generating a localcasting IP data packet according to a localcasting IP address and IP data service information included in the extracted IP data service guide; And Transmitting the generated local casting IP data packet to a DMB viewing terminal corresponding to the local casting IP address; Including, The IP data service guide includes a service list for the DMB broadcast. The method of providing a local casting service based on IP tunneling. An IP address area including an IP address assigned to the DMB broadcast relay server; A service list area for the DMB broadcast; And Packet generation rules associated with the generation of IP data packets Including, The DMB broadcast relay server receives an IP data packet from the DMB broadcast server, generates a localcasting IP data packet based on the service list and the packet generation rule extracted from the received IP data packet, and sends the packet to a DMB viewing terminal. A computer-readable recording medium having recorded thereon an IP data service guide.

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