5.12 Warning message delivery
23.4013GPPGeneral Packet Radio Service (GPRS) enhancements for Evolved Universal Terrestrial Radio Access Network (E-UTRAN) accessRelease 18TS
5.12.1 General
Warning message delivery is similar to Cell Broadcast Service defined in TS 23.041 [48], it permits a number of unacknowledged Warning messages to be broadcast to UEs within a particular area.
The maximum size of the Warning message for E-UTRAN is different from that of UTRAN/GERAN.
When S1-flex is used, the eNodeB may receive duplicated Warning messages.
For details on the Warning system message delivery, see TS 23.041 [48].