DEVICE AND METHOD FOR PERFORMING RANDOM ACCESS IN NON-TERRESTRIAL NETWORK SYSTEM

Disclosed are a device and method for performing a random access in a non-terrestrial network system. A wireless transmission and reception method performed by a user equipment according to an embodiment of the present invention comprises the steps of: receiving random access channel (RACH) configuration information from a network node, wherein the RACH configuration information includes zero correlation zone (ZCZ) configuration information indicating at least one cyclic shift value (Ncs) among a plurality of cyclic shift values to be used for generating a random access preamble, the plurality of cyclic shift values are divided into a first set and a second set according to the cell coverage to which the value is applied, and the second set is applied to a cell coverage larger than the first set; generating the random access preamble on the basis of the Ncs, transmitting the random access preamble to the network node; receiving a response message to the random access preamble from the network node; and transmitting a message to the network node on the basis of the response message.