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mark.wood@ceasa-int

What is ‘Cell Broadcasting’ and Why do I care, as a HAM? By Mark Wood G4HLZ For Global Amateur Radio Emergency Communications conference, Tampere, Finland 13-14 June 2005. mark.wood@ceasa-int.org. ‘Cell Alert’ System Via Cell Broadcast. By

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mark.wood@ceasa-int

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  1. What is ‘Cell Broadcasting’andWhy do I care, as a HAM?ByMark Wood G4HLZForGlobal Amateur Radio Emergency Communications conference,Tampere, Finland 13-14 June 2005. mark.wood@ceasa-int.org

  2. ‘Cell Alert’ System Via Cell Broadcast. By Cellular Emergency Alert Service Association (CEASa) . CEASa is a not-for-profit Voluntary organization which exists to further Humanitarian applications of Cell Broadcasting for government-to-citizen mass alerting. mark.wood@ceasa-int.org

  3. Can we have a successful Disaster? Disaster = Hazard X Vulnerability (International Federation of Red Cross and Red Crescent)

  4. Covered in this presentation; • Technology • Political issues • Amateur Radio channel 673

  5. There are four main points to remember about Cell Broadcast. • Uses the ‘Cell Broadcast’ (Area Information) feature that most mobiles already have built in; no need to build anything. • ‘Downlink-only’ true ‘Broadcast’ means No limit to scale; can talk to hundreds of millions at one time will not crash the networks. • Uses capacity not taken by calls, so is immune to failure due to overloading as always happens during disasters. • We can target individual ‘cells’ (Towers) so it is geo-specific. You can tell one village to evacuate and another to stay where they are.

  6. Cell@lert system Components NetworkX Cel@lert Direct Via web browser Cell@lert HTML Cell Broadcast Centre Advanced Broadcast Commander Cell Broadcast Broker Server BMSP NetworkY CAP BMSP Cell Broadcast Reporter Cell Broadcast Centre BMRP

  7. The authority logs on to a web portal, and selects the geographical area where the broadcast will be sent

  8. Then the text of the message and other details about the message are also proposed

  9. If the Broker sees that all policy has been followed, then it is reformatted and Signaled to each network in turn. It is then broadcast to all mobiles camped On the affected cells, which then alarm and display the message. Cell Broadcasting by the Network Cell Broadcast Center CBC BSS Network Flooding Expected In next hour RBS A-bis BMSP BSC From CBBS A-bis BSC GSM 03.49 RBS Cell Data Cell Planner

  10. Impact on Networks • Is not affected by, or cause congestion, uses CBCCH not TCH (not using traffic channels). So it will work even in full overload situations such as disasters.

  11. Impact on phones • To enable the feature, the user can switch it on from the ‘area information’ menu on his phone. • Or it can be enabled by over-the-air-activation-teleservice.

  12. Impact on regulation • Urgent need for harmonized channel identification scheme to make it practical for travelers and tourists. • Improvements to standards needed to make sure phones give priority to emergency messages.

  13. Political Issues; • Senders ( e.g. Police) must be authorized by national law. Messages must be authentic and follow national policy. • Not acceptable for warnings only to subscribers on one network, must be all • EU law requires accountability, accordingly reporter system is part of solution. • Government to Government communications in order to reach closed user groups such as off duty reservists.

  14. Ham Radio; • Senders, e.g. coordinators need to have previously arranged accounts. • The governments and networks must agree to this facility being made available to Ham radio, and so MoUs must be provided to control this. • Can be used for call out of volunteer operators. • Can be used to send to ad-hoc groups who will not have an account on the national Broker system. • Ham radio will therefore be an important resource in such situations.

  15. ‘Cell@lert’ System The End By CEASa. Mark.wood@ceasa-int.org

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