Method and system for transmitting the notification message in earthquake and tsunami warning system

A method for transmitting a notification message of an earthquake and tsunami warning system comprising:

• after paging a terminal through a paging message containing indication information of an earthquake and tsunami warning system (ETWS) message, a base station scheduling the notification message of the ETWS as user data in sub-frames subsequent to a sub-frame with the paging message, wherein the sub-frames subsequent to the sub-frame with the paging message are appropriate sub-frames subsequent to the paging message in a specified time period, and generating control information containing an identifier (ID) of the ETWS, and the control information containing resource information on a downlink shared channel (DL-SCH) that is assigned for the notification message of the ETWS;
• the base station sending the control information over a physical downlink control channel (PDCCH) and sending the notification message of the ETWS over the DL-SCH based on the control information;
• and
• after receiving the paging message containing the indication information of the ETWS message, the terminal immediately monitoring the PDCCH and detecting and analyzing the control information containing the ID of the ETWS on the PDCCH to obtain the resource information contained in the control information, and receiving the notification message of the ETWS on corresponding resources of the DL-SCH based on the resource information,
• wherein the base station sends the control information over the PDCCH by putting the control information in a common search space within the PDCCH that is located within the sub-frame carrying the notification message of the ETWS or putting fixedly the control information in one or more control units within the PDCCH that is located within the sub-frame carrying the notification message of the ETWS.

A system for transmitting a primary notification message of an earthquake and tsunami warning system (ETWS) comprising a base station and a terminal, wherein:

• the base station comprises a first transmitting unit, a scheduling unit and a second transmitting unit, wherein:
• the first transmitting unit is configured to page the terminal through a paging message at a paging opportunity of the terminal and trigger the scheduling unit, the paging message containing ETWS message indication information;
• the scheduling unit is configured to schedule the primary notification message of the ETWS as user data in sub-frames subsequent to a sub-frame with the paging message containing the indication information of the ETWS message after being triggered, wherein the sub-frames subsequent to the sub-frame with the paging message are appropriate sub-frames subsequent to the paging message in a specified time period, generate control information containing an ID of the ETWS and trigger the second transmitting unit, the control information containing resource information on a downlink shared channel (DL-SCH) that is assigned for the primary notification message of the ETWS;
• the second transmitting unit is configured to send the control information over a physical downlink control channel (PDCCH) and send the primary notification message of the ETWS over the DL-SCH based on the control information after being triggered;
• the terminal comprises a first receiving unit, a second receiving unit and a third receiving unit, wherein:
• the first receiving unit is configured to trigger the second receiving unit after receiving the paging message containing the ETWS message indication information;
• the second receiving unit is configured to immediately monitor the PDCCH and detect and analyze the control information containing the ID of the ETWS on the PDCCH after being triggered, to obtain the resource information contained in the control information and trigger the third receiving unit;
• and
• the third receiving unit is configured to receive the primary notification message of the ETWS on corresponding resources of the DL-SCH based on the resource information after being triggered,
• wherein the second transmitting unit sends the control information over the PDCCH by putting the control information in a common search space within the PDCCH that is located within the sub-frame carrying the primary notification message of the ETWS or putting fixedly the control information in one or more control units within the PDCCH that is located within the sub-frame carrying the primary notification message of the ETWS.