Abstract: Part 3: INFRASTRUCTURE SECURITY; International audience; The U.S. Department of Homeland Security initiated the Commercial Mobile Alert System (CMAS) to inform the general public of emergencies. CMAS utilizes the commercial telecommunications infrastructure to broadcast emergency alert text messages to mobile users in an area affected by an emergency. Because CMAS uses cell broadcast service, the smallest area that CMAS can broadcast messages is a cell site, which is usually quite large for local emergencies. This paper proposes an enhancement ...
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Topics: 
Computer security
Telecommunications