Method of receiving a disaster warning message through a broadcast/multicast channel
Disclosed is a method of receiving a warning message through a broadcast/multicast channel in wireless communication system. The terminal (UE) receives control information of the warning message through a first point-to-multipoint control channel, receives the warning message based on the received control information through a point-to-multipoint traffic channel, receives control information of a particular broadcast/multicast service through the first point-to-multipoint control channel and a second point-to-multipoint control channel, and receives the particular broadcast/multicast service based on the received control channel through the point-to-multipoint traffic channel.
1. A method for receiving a warning message in a mobile communication system, the method comprising:
receiving a paging message including a warning message indication, the warning message indication indicating presence of the warning message and that there will be a transmission of the warning message;
receiving a specific Radio Network Temporary Identifier (RNTI) on a physical downlink control channel (PDCCH),
wherein the specific RNTI is a system information-radio network temporary identifier (SI-RNTI) related to upcoming system information transmitted through a downlink shared channel (DL-SCH), and
wherein the SI-RNTI is decoded to acquire a time-domain scheduling related to the warning message;
receiving control information related to the warning message through the DL-SCH using the specific RNTI, wherein the control information is system information contained in a system information block (SIB) and the system information includes scheduling information for the warning message; and
receiving the warning message based on the received control information after receiving the paging message,
wherein the warning message is an Earthquake and Tsunami Warning System (ETWS) message,
wherein the control information includes a primary ETWS notification and a secondary ETWS notification, and
wherein the primary ETWS notification is contained in system information block (SIB) type 10 and the secondary ETWS notification is contained in SIB type 11.
2. The method of claim 1 , wherein the primary ETWS notification is firstly received before the reception of the secondary ETWS notification.
3. The method of claim 1 , wherein the control information is transmitted by a network within periodically occurring time domain windows.
4. The method of claim 3 , wherein the time domain windows are system information windows (SI-windows).
5. The method of 4 , wherein SIB type 1 configures a length of the SI-windows.
6. The method of claim 1 , wherein the control information is received using dynamic scheduling.
7. The method of claim 1 , wherein the primary ETWS notification and the secondary ETWS notification are received based on scheduling information contained in SIB type 1.