Patent ID: 8229390

Claim:
A method of receiving a warning message in mobile communication system, the method comprising: monitoring a physical downlink control channel (PDCCH); receiving a specific Radio Network Temporary Identifier (RNTI) through the PDCCH; decoding the received specific RNTI on the PDCCH, wherein the specific RNTI is a System Information-RNTI (SI-RNTI), and wherein a time-domain scheduling is acquired from the decoded SI-RNTI; receiving system information through a downlink shared channel (DL-SCH) using the RNTI; and receiving the warning message based on the received system information, wherein the warning message is an Earthquake and Tsunami Warning System (ETWS) message, wherein the ETWS message is divided into a primary ETWS notification and a secondary ETWS notification, and wherein the primary ETWS notification is contained in a system information block (SIB) type 10 and the secondary ETWS notification is contained in a system information block (SIB) type 11 .