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New Public Warning Media in CMA DAB & Cell Broadcast CAP Implementation Workshop – Geneva, 22-23 Jun 2009 Wang Chunfang National Meteorological.

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Presentation on theme: "New Public Warning Media in CMA DAB & Cell Broadcast CAP Implementation Workshop – Geneva, 22-23 Jun 2009 Wang Chunfang National Meteorological."— Presentation transcript:

1 New Public Warning Media in CMA DAB & Cell Broadcast CAP Implementation Workshop – Geneva, Jun 2009 Wang Chunfang National Meteorological Information Center of CMA

2 Public Warning in CMA CMA is on the way to establish a nation-wide all hazard all media public warning dissemination system –Organization 1 National center 31 Provincial centers 328 Prefecture centers 2431 County offices –Communication Network Domestic service network (CMA intranet) is isolated from internet, fast, safe and highly controlled. Terrestrial wide band network, satellite two way communication, satellite broadcast International connections, WMO RTH Beijing, WIS, GTS –Service Public, security and natural resource oriented meteorology

3 CMA public warning system

4 New technology S-DAB –Satellite Broadcast –Full footprint coverage –little transmission delay –Efficient “last-mile” dissemination for mountain villages, islands and ocean areas Cell Broadcast –Up to 660 Million mobile phone users in China, 2009 –CBCH channel, fast, efficient, economic –Geo targeted

5 DAB system World Space AsiaStar, northeast beam, L-band, GEO, Footprint covers 90% territory, 99% population of china 1 uplink station in Beijing Targeted area dissemination

6 DAB alert format Start of Message Head –Originator –issue time –Event type –Severity level (red, orange, yellow, blue, green) –Affected area delineated by geocode and circle Text message End of Message

7 DAB Receiver Text-to-Speech audio generation Audio, serial and USB interface Browse and replay stored messages Message filtering Diversified alarm type such as beep tone, LED indicator. active and power saving mode. AC/DC power supply with backup battery Backlight for low light situations. Current price CNY 1400 Expected future price: CNY 500~800.

8 History of DAB Working group of emergency managers, IT experts and telecommunication experts convened in May 2007 to start DAB DAB draft recommendations of transmission and receiving was proposed in Oct Draft was in field tested and revised in April 2008 Platform Software developed in 2008 First batch production of receivers, Nov,2008 Pilot system of 2140 DAB receivers was set up in provinces are engaged in pilot system for testing and assessment now

9 Pilot system of Cell Broadcast First city: Shenzhen, Guangdong province Population: 7 million Area: 2020km 2 Service open:18 July, 2007 Geographic Grid : 1km x 1km 2020 grids for targeted dissemination +

10 Platform and user interface

11 System function D3 D1 C1 B3 B2 C2 B1 A2 D2 A1 C3A3 D3 D1 C1 B3 B2 C2 B1 A2 D2 A1 C3A3 D3 D1 C1 B3 B2 C2 B1 A2 D2 A1 C3A3 D3 D1 C1 B3 B2 C2 B1 A2 D2 A1 C3A3 D3 D1 C1 B3 B2 C2 B1 A2 D2 A1 C3A3 Alarm: Tornado is coming from 8km southeast. Please withdraw to the north Tornado ended. Basic Grid: 1 km x 1 km Maxim time delay: 3 min Message length: 93x15 characters per service Personal instruction Alarm: Tornado is coming from 4km northeast. Please withdraw to the south

12 Regulatory Efforts Local government, CMA local office and mobile operators are working together to promote cell broadcast public warning. More than twenty provinces have announced to start cell broadcast public warning.

13 Thank You Wang Chunfang Senior communication engineer National Meteorological Information Center China Meteorological Administration No.46,Zhongguancun Nandajie, Haidian District,Beijing,China, Postcode: Tel:


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