Patent ID: 8213896

Claim:
A method of receiving a warning message in mobile communication system, the method comprising: receiving control information related to the warning message through a downlink channel, wherein the control information is received within periodically occurring time domain windows, and wherein a time domain scheduling for the reception of the control information is acquired from decoding a specific radio network temporary identifier (RNTI) on a physical downlink control channel (PDCCH); and receiving the warning message based on the received control information, wherein the control information is a system information (SI) message, 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 control information includes the primary ETWS notification contained in a system information block (SIB) type 10 and the secondary ETWS notification contained in a system information block (SIB) type 11.