Base station, terminal, random access preamble detection method and random access channel configuration method

A method performed by a base station in a wireless communication system, the method comprising:

• transmitting, to a terminal, a configuration including a random access channel (RACH) configuration index;
• and
• receiving, from the terminal, a random access preamble based on a RACH occasion in a system frame, the RACH occasion being identified based on the configuration,
• wherein the RACH configuration index indicates a RACH period,
• wherein an index of the system frame is determined based on mod(Nf, Nperiod)=k,
• wherein the Nf indicates the index of the system frame,
• wherein the Nperiod is associated with the RACH period, and
• wherein the k is an integer associated with the RACH period.

A terminal in a wireless communication system, the terminal comprising:

• a transceiver;
• and
• a controller coupled with the transceiver and configured to:
• receive, from a base station, a configuration including a random access channel (RACH) configuration index,
• identify a RACH occasion based on the configuration, and
• transmit, to the base station, a random access preamble based on the RACH occasion in a system frame,
• wherein the RACH configuration index indicates a RACH period,
• wherein an index of the system frame is determined based on mod(Nf, Nperiod)=k,
• wherein the Nf indicates the index of the system frame,
• wherein the Nperiod is associated with the RACH period, and
• wherein the k is an integer associated with the RACH period.

A base station in a wireless communication system, the base station comprising:

• a transceiver;
• and
• a controller coupled with the transceiver and configured to:
• transmit, to a terminal, a configuration including a random access channel (RACH) configuration index, and
• receive, from the terminal, a random access preamble based on a RACH occasion in a system frame, the RACH occasion being identified based on the configuration,
• wherein the RACH configuration index indicates a RACH period,
• wherein an index of the system frame is determined based on mod(Nf, Nperiod)=k,
• wherein the Nf indicates the index of the system frame,
• wherein the Nperiod is associated with the RACH period, and
• wherein the k is an integer associated with the RACH period.