Method and apparatus for wireless communication in wireless communication system

A method for performing a random access procedure by a base station in a wireless communication system, the method comprising:

• receiving, from a terminal, a random access preamble based on a physical random access channel (PRACH) resource;
• identifying a random access radio network temporary identifier (RA-RNTI) based on an index of a first slot of the selected PRACH resource, a number of symbols in the first slot, a first symbol index of the selected PRACH resource, and information indicating whether the random access preamble is transmitted through a supplementary uplink;
• and
• transmitting, to the terminal, a random access response (RAR) based on the RA-RNTI.

A terminal for performing a random access procedure, the terminal comprising;

• a transceiver;
• at least one controller coupled with the transceiver and configured to:
• select a physical random access channel (PRACH) resource from one or more PRACH resources;
• transmit, to a base station, a random access preamble based on the selected PRACH resource;
• identify a random access radio network temporary identifier (RA-RNTI) based on an index of a first slot of the selected PRACH resource, a number of symbols in the first slot, a first symbol index of the selected PRACH resource, and information indicating whether the random access preamble is transmitted through a supplementary uplink;
• and
• monitor a control channel for a random access response (RAR) based on the RA-RNTI.

A base station for performing a random access procedure, the base station comprising;

• a transceiver;
• at least one controller coupled with the transceiver and configured to:
• receive, from a terminal, a random access preamble based on a physical random access channel (PRACH) resource;
• identify a random access radio network temporary identifier (RA-RNTI) based on an index of a first slot of the selected PRACH resource, a number of symbols in the first slot, a first symbol index of the selected PRACH resource, and information indicating whether the random access preamble is transmitted through a supplementary uplink;
• and
• transmit, to the terminal, a random access response (RAR) based on the RA-RNTI.