About Public Warning Cell Broadcast Service
The “Public Warning Cell Broadcast Service” refers to the use of the Cell Broadcast Service function of the mobile communication system to send alert messages to a big amount of mobile phones in a specific area within a short time through telecom operator mobile broadband 4G system. When the mobile phone receives the message, it will make a special sound and vibration, so that the public can grasp the disaster information as soon as possible.
Receiving messages will not be reported back.
Message sending structure
The government’s public warning message is sent to the “Cell Broadcast Entity”, which is transmitted to the “Cell Broadcast Center” of the telecom operator after message verification and format conversion. It is then transmitted in the way of broadcast cell in the base station of the designated area via the 4G network, and people holding 4G and 3G mobile phones can receive the alert messages within the signal range.