Method and apparatus for transmitting uplink data having low latency in wireless communication system

A method for transmitting UL data requiring low latency in a wireless communication system, the method performed by user equipment comprising steps of:

• receiving control information related to a contention-based PUSCH zone from a base station, and
• transmitting UL data to the base station based on the received control information,
• wherein the contention-based PUSCH zone comprises a resource region in which the UL data of the user equipment is able to be transmitted without an UL grant allocated by the base station,
• the control information comprises procedure determination information allocated to each type of specific procedure in order to determine the type of the specific procedure performed by the user equipment, and
• the procedure determination information comprises a PRACH preamble sequence set comprising a first PRACH preamble sequence used for an RACH procedure based on a contention-based PUSCH zone (CP zone) and a second PRACH preamble sequence used for a common RACH procedure not using a CP zone.

User equipment transmitting UL data requiring low latency in a wireless communication system, comprising:

• a communication unit for communicating with an outside in a wired or wireless manner;
• and
• a processor operatively connected to the communication unit,
• wherein the processor controls the communication unit so that the communication unit receives control information related to a contention-based PUSCH zone from a base station and controls the communication unit so that the communication unit transmits UL data to the base station based on the received control information,
• the contention-based PUSCH zone comprises a resource region in which the UL data of the user equipment is able to be transmitted without an UL grant allocated by the base station,
• the control information comprises procedure determination information allocated to each type of specific procedure in order to determine the type of the specific procedure performed by the user equipment, and
• the procedure determination information comprises a PRACH preamble sequence set comprising a first PRACH preamble sequence used for an RACH procedure based on a contention-based PUSCH zone (CP zone) and a second PRACH preamble sequence used for a common RACH procedure not using a CP zone.