本标准描述了进化包系统（EPS）公共警报系统（PWS）用于无线紧急警报（WEA）3.0消息的广播，包括将WEA 3.0应用程序级消息映射到EPS内使用的小区广播中心（CBC）消息结构。

This Standard describes the use of the Evolved Packet System (EPS) Public Warning System (PWS) for the broadcast of Wireless Emergency Alert (WEA) 3.0 messages and includes the mapping of WEA 3.0 application level messages to the Cell Broadcast Center (CBC) message structure as used within the EPS.