Embed Size (px)
Citation preview
New Public Warning Media in CMADAB & Cell Broadcast
CAP Implementation Workshop – Geneva, 22-23 Jun 2009
Wang Chunfang ([email protected])National Meteorological Information Center of CMA
Public Warning in CMACMA 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
CMA public warning system
Prefecture public warning center
Provincial public warning center
National public warning center
County office
DAB satellitebroadcast
Radio station
WEB
CNSS SMS
TV station
RDS
Telephone/fax
Shortwave radio
LED display
Weather channel
Cable TV
Mobile SMS
Warning mediaWarning media
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
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
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 messageEnd of Message
DAB ReceiverText-to-Speech audio generationAudio, serial and USB interface Browse and replay stored messagesMessage filtering Diversified alarm type such as beep
tone, LED indicator. active and power saving mode.AC/DC power supply with backup
batteryBacklight for low light situations.Current price CNY 1400 Expected future price: CNY 500~800.
History of DABWorking 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. 2007
Draft was in field tested and revised in April 2008 Platform Software developed in 2008First batch production of receivers, Nov,2008Pilot system of 2140 DAB receivers was set up in
20096 provinces are engaged in pilot system for testing
and assessment now
Pilot system of Cell Broadcast
First city: Shenzhen, Guangdong provincePopulation: 7 millionArea: 2020km2
Service open:18 July, 2007Geographic Grid : 1km x 1km2020 grids for targeted dissemination
+
Platform and user interface
System function
D3
D1C1
B3B2
C2B1
A2
D2
A1C3A3
D3
D1C1
B3B2
C2B1
A2
D2
A1C3A3
D3
D1C1
B3B2
C2B1
A2
D2
A1C3A3
D3
D1C1
B3B2
C2B1
A2
D2
A1C3A3
D3
D1C1
B3B2
C2B1
A2
D2
A1C3A3
Alarm: Tornadois coming from 8km southeast. Please withdrawto 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: Tornadois coming from 4km northeast. Please withdrawto the south
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.
Thank YouWang ChunfangSenior communication engineer National Meteorological Information CenterChina Meteorological AdministrationNo.46,Zhongguancun Nandajie, Haidian District,Beijing,China, Postcode:100081Tel: +86 10 58995186Email: [email protected]
