KR20200041439A - Disaster alarm method and subsystem using terrestrial DMB - Google Patents

Disaster alarm method and subsystem using terrestrial DMB Download PDF

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Publication number
KR20200041439A
KR20200041439A KR1020180121460A KR20180121460A KR20200041439A KR 20200041439 A KR20200041439 A KR 20200041439A KR 1020180121460 A KR1020180121460 A KR 1020180121460A KR 20180121460 A KR20180121460 A KR 20180121460A KR 20200041439 A KR20200041439 A KR 20200041439A
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South Korea
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disaster
dmb
data
channel
disaster warning
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KR1020180121460A
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Korean (ko)
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김광범
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주식회사 우노시스
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Priority to KR1020180121460A priority Critical patent/KR20200041439A/en
Publication of KR20200041439A publication Critical patent/KR20200041439A/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/53—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers
    • H04H20/59—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for emergency or urgency
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/65—Arrangements characterised by transmission systems for broadcast
    • H04H20/71—Wireless systems
    • H04H20/72—Wireless systems of terrestrial networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H2201/00—Aspects of broadcast communication
    • H04H2201/10—Aspects of broadcast communication characterised by the type of broadcast system
    • H04H2201/11—Aspects of broadcast communication characterised by the type of broadcast system digital multimedia broadcasting [DMB]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Alarm Systems (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

The present invention relates to a disaster warning method and a subsystem using a terrestrial DMB. The disaster warning method comprises the following steps of: inserting a disaster notification signal into a synchronization channel of a terrestrial T-DMB broadcast signal and inserting emergency warning system (EWS) data into a data channel to be modulated into a terrestrial radio frequency signal, and broadcasting in air, if a T-DMB broadcasting station receives a disaster warning from a disaster warning agency; receiving the T-DMB broadcast signal by a T-DMB receiver to detect a disaster occurrence notification signal in the synchronization channel; and decoding the disaster warning system (EWS) data received through the data channel to display a disaster warning, if the T-DMB receiver detects a disaster occurrence notification signal.

Description

지상파 디엠비를 이용한 재난경보 방법과 하부시스템 {Disaster alarm method and subsystem using terrestrial DMB} Disaster alarm method and subsystem using terrestrial DMB}

본 발명은 동기채널의 송신기식별정보(TII: Transmitter Identification Information)신호를 이용하여 재난방송을 알려주는 지상파 디엠비(T-DMB)를 이용한 재난경보 방법 및 시스템에 관한 것이다.The present invention relates to a disaster warning method and system using a terrestrial DM (T-DMB) that notifies a disaster broadcast using a transmitter identification information (TII) signal of a synchronization channel.

국내의 지상파 디지털 멀티미디어 방송(T-DMB) 시스템은 이동중에도 고품질의 비디오/오디오 방송을 시청할 수 있도록 유럽형 디지털 오디오 방송(DAB) 표준인 유레카-147 시스템을 기반 기술로 채택하였으며, 오디오 압축방식으로 뮤직캠(MUSICAM)을 사용하고, 비디오 압축 기술로 MPEG-4 파트 10 AVC(Advanced Video Coding), 오디오 압축 기술로 MPEG-4 BSAC(Bit Sliced Arithmetic Coding), MPEG 2 TS(Transport Stream) 기술, 데이터 서비스 기술로 PAD(Program Associated Data), NPAD(Non-PAD), 멀티미디어 오브젝트 전송(Multimedia Object Transfer:MOT) 프로토콜 등을 사용한다.The domestic terrestrial digital multimedia broadcasting (T-DMB) system adopts the European digital audio broadcasting (DAB) standard Eureka-147 system as a base technology so that users can watch high-quality video / audio broadcasting on the go. Cam (MUSICAM), MPEG-4 Part 10 Advanced Video Coding (AVC) with video compression technology, MPEG-4 Bit Sliced Arithmetic Coding (BSAC) with audio compression technology, MPEG 2 Transport Stream (TS) technology, data service As a technology, program associated data (PAD), non-PAD (NPAD), and multimedia object transfer (MOT) protocols are used.

재난발생이 우려되거나 재난이 발생한 경우 신속하고 정확한 정보를 T-DMB를 통해 국민에게 전달하기 위한 재난경보시스템(EWS: Emergency Warning System)이 제안되어 있다. 재난경보시스템(EWS)은 경보데이터가 전송프레임의 데이터 채널인 고속정보채널(FIC:Fast Information Channel)을 통해서 전달된다.An emergency warning system (EWS) has been proposed to deliver prompt and accurate information to the public through T-DMB when a disaster occurs or when a disaster occurs. In the emergency alert system (EWS), alarm data is transmitted through a fast information channel (FIC), which is a data channel of a transmission frame.

본 발명의 목적은 재난경보 발생 여부를 동기채널의 송신기식별정보(TII) 시그널을 통해 전송하여 평상시에는 전원절약모드(슬립모드)에서 송신기식별정보(TII) 시그널을 모니터하다가 재난경보가 발생된 경우 정상모드 (액티브모드)로 동작하여 전송 프레임의 데이터 채널인 고속정보채널(FIC:Fast Information Channel)에 실린 경보 데이터를 디코딩하여 자세한 경보내용을 파악할 수 있게 하는 지상파 디엠비를 이용한 재난경보 방법 및 시스템을 제공하는 것이다.An object of the present invention is to detect whether or not a disaster alarm has occurred by transmitting a transmitter identification information (TII) signal of a synchronization channel and monitoring the transmitter identification information (TII) signal in a power-saving mode (sleep mode) during normal times. Disaster alarm method and system using terrestrial DMB that operates in normal mode (active mode) and decodes alarm data carried on a fast information channel (FIC), which is a data channel of a transmission frame, so that detailed alarm contents can be identified. Is to provide.

본 발명에 따른 T-DMB 수신기는 재난경보를 인지하기 위해 항시 FIC의 EWS 데이터를 디코딩할 필요 없이 실제재난이 발생된 경우에만 디코딩함으로써 전력소모를 최소화하면서도 재난경보시스템(EWS)을 정상적으로 운영할 수 있다.The T-DMB receiver according to the present invention can operate the disaster warning system (EWS) normally while minimizing power consumption by decoding only when an actual disaster occurs without having to decode the EWS data of the FIC at all times in order to recognize the disaster alarm. have.

본 발명이 적용되는 T-DMB의 전송 프레임은 96ms의 크기를 가지며, 크게 동기채널과 데이터채널로 구분되고, 데이터채널은 다시 고속정보채널(FIC:Fast Information Channel)과 주서비스채널(MSC:Main Service Channel)로 구분된다. 동기채널은 TII(Transmitter Identification Information)심볼과 PRS(Phase Reference Symbol)심볼로 이루어지고, 고속정보채널(FIC)은 고속정보블럭들(FIB:Fast Information Block)로 이루어지며, 주서비스채널(MSC:Main Service Channel)은 공통 인터리브된 프레임들(CIF:Common Interleaved Frame)로 이루어진다.The T-DMB transmission frame to which the present invention is applied has a size of 96 ms, and is largely divided into a synchronization channel and a data channel, and the data channel is again a fast information channel (FIC) and a main service channel (MSC: Main). Service Channel). The synchronization channel consists of TII (Transmitter Identification Information) symbol and PRS (Phase Reference Symbol) symbol, and the Fast Information Channel (FIC) consists of Fast Information Blocks (FIBs) and the main service channel (MSC: Main Service Channel (CIF) consists of Common Interleaved Frames (CIF).

또한 본 발명이 적용되는 T-DMB의 계층 구조는 유럽형 라디오 방송(DAB) 표준인 EUREKA-147 표준을 근간으로 비디오 서비스를 부가한 구조이다. 데이터 채널은 고속정보채널(FIC)과 주서비스채널(MSC)로 이루어지고, 고속정보채널(FIC)의 상위계층에는 MCI & SI와 FIDC 그리고 FIDC 위에 TDC, EWS 서비스가 있다. 주서비스채널(MSC)은 오디오서비스와 데이터서비스 비디오서비스로 구분되고, 오디오서비스 위에는 오디오와 PAD가 있으며, PAD위에 DLS와 TDC가 있다. 데이터 서비스는 NPAD이고, NPAD 위에 MOT, IP Tunneling, TDC가 있으며, MOT를 통해 브로드캐스트 웹사이트나 인터액티브 서비스, JPEG 슬라이드 쇼 등의 서비스가 제공된다. 비디오서비스 위에는 블럭코드와 MPEG4 LIVE TV, MPEG4 A/V, MPEG4 데이터가 있다.In addition, the hierarchical structure of the T-DMB to which the present invention is applied is a structure in which a video service is added based on the EUREKA-147 standard, which is a European radio broadcasting (DAB) standard. The data channel consists of a high-speed information channel (FIC) and a main service channel (MSC), and the upper layers of the high-speed information channel (FIC) include MCI & SI, FIDC, and TDC and EWS services on the FIDC. The main service channel (MSC) is divided into an audio service and a data service video service, and there are audio and PAD on the audio service, and DLS and TDC on the PAD. The data service is NPAD, and there are MOT, IP Tunneling, and TDC on NPAD, and services such as broadcast websites, interactive services, and JPEG slide shows are provided through MOT. Above the video service are block codes, MPEG4 LIVE TV, MPEG4 A / V, and MPEG4 data.

발명에 따른 T-DMB 수신기는 재난경보를 인지하기 위해 항시 FIC의 EWS 데이터를 디코딩할 필요없이 실제 재난이 발생된 경우에만 디코딩함으로써 전력소모를 최소화하면서도 재난경보시스템(EWS)을 정상적으로 운영할 수 있다.The T-DMB receiver according to the present invention can operate the disaster warning system (EWS) normally while minimizing power consumption by decoding only when an actual disaster occurs without having to decode the EWS data of the FIC at all times in order to recognize the disaster alarm. .

이상에서 본 발명은 도면에 도시된 일 실시예를 참고로 설명되었으나, 본 기술분야의 통상의 지식을 가진 자라면 이로부터 다양한 변형 및 균등한 타 실시예가 가능하다는 점을 이해할 것이다.In the above, the present invention has been described with reference to one embodiment shown in the drawings, but those skilled in the art will understand that various modifications and other equivalent embodiments are possible therefrom.

Claims (1)

재난경보발생기관과 T-DMB 방송국과 T-DMB 수신기들로 이루어진 T-DMB 시스템에 있어서, 상기 T-DMB 방송국이 상기 재난경보발생기관으로부터 재난경보를 수신하면 지상파 T-DMB 방송신호의 동기채널에 재난발생통지신호를 삽입하고, 데이터채널에 재난경보시스템(EWS) 데이터를 삽입하여 지상파 고주파 무선신호로 변조한 후 송신탑을 통해 공중으로 방송하고, 상기 T-DMB 수신기가 상기 T-DMB 방송신호를 수신하여 동기채널에 재난발생 통지신호가 검출되면 데이터 채널을 통해 수신된 재난경보시스템(EWS) 데이터를 디코딩하여 재난경보를 디스플레이하는 것을 특징으로 하는 지상파 디엠비를 이용한 재난경보시스템.In a T-DMB system consisting of a disaster alarm generating institution, a T-DMB broadcasting station, and a T-DMB receiver, when the T-DMB broadcasting station receives a disaster warning from the disaster warning generating institution, a synchronization channel of a terrestrial T-DMB broadcasting signal Insert a disaster occurrence notification signal into the data channel, insert a disaster warning system (EWS) data into the data channel, modulate it into a terrestrial radio frequency radio signal, broadcast it through the transmission tower, and broadcast the T-DMB receiver. A disaster warning system using a terrestrial DMB, characterized in that when a disaster occurrence notification signal is detected on a synchronization channel, a disaster warning system (EWS) data received through a data channel is decoded to display a disaster warning.
KR1020180121460A 2018-10-12 2018-10-12 Disaster alarm method and subsystem using terrestrial DMB KR20200041439A (en)

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