Method and apparatus for sending uplink data in wireless communication system

A method of transmitting UL data in a wireless communication system supporting low latency service, the method being performed by a first UE and comprising:

• sending an urgent signal providing notification of a generation of an event related to an emergency situation to an eNB;
• and
• sending an urgent message comprising detailed information related to the generated event to the eNB,
• wherein a point of time at which the urgent message is sent is determined by taking into consideration at least one of a point of time at which an UL grant of a second UE is canceled and a processing time of the second UE, and
• the UL grant of the second UE comprises resource allocation information that enable the second UE to transmit UL data.

A method of transmitting UL data in a wireless communication system supporting low latency service, the method being performed by a second user equipment (UE) and comprising:

• receiving a control message providing notification that an event related to an emergency situation has been generated from an eNB, wherein the control message comprises information related to a cancel of an UL grant scheduled to be transmitted to the second UE;
• determining a section in which UL data is prohibited from being transmitted by taking into consideration at least one of the information related to the cancel of the received UL grant and a processing time of a system;
• and
• not transmitting the uplink data to the eNB in the duration in which UL data is prohibited from being transmitted,
• wherein the information related to the cancel of the UL grant comprises a point of time at which and/or a duration in which the UL grant is canceled.