Method and apparatus for configuring transmission resources in wireless communication system

A method of a reader (R) node, comprising:

• broadcasting a trigger message instructing performance of a random access (RA) procedure;
• receiving, from a device (D) node, a first message (Msg1) within a time duration in which transmission of the Msg1 is possible in response to the trigger message;
• and
• transmitting, to the D node, a second message (Msg2) including information on a resource available for transmission of a third message (Msg3) and response information for the Msg1, based on the received Msg1,
• wherein the D node transmits the Msg1 at a first time, and the first time is a start time of one Internet of Things (IoT) slot among IoT slots obtained by dividing the time duration from a predefined minimum time for transmission of the Msg1 to a predefined maximum time for transmission of the Msg1.

A first device (D) node comprising at least one processor, wherein the at least one processor causes the first D node to perform:

• transmitting, to a reader (R) node, a first message (Msg1) at a first time within a time duration in which transmission of the Msg1 is possible, based on reception of a random access trigger message from the R node;
• receiving, from the R node, a second message (Msg2) including information on a resource available for transmission of a third message (Msg3);
• and
• in response to identifying the received Msg2 as a response to the Msg1, transmitting the Msg3 including information on the first D node to the R node, based on the information on the resource available for transmission of the Msg3, which is included in the Msg2,
• wherein the first time is a start time of one Internet of Things (IoT) slot among IoT slots obtained by dividing the time duration from a predefined minimum time for transmission of the Msg1 to a predefined maximum time for transmission of the Msg1.