Method of determining frequency-domain offset parameter, user equipment (UE), random access method, method for configuring random access information, corresponding device and computer readable medium

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

• transmitting, to a terminal, first information related to a length of a random access preamble and second information related to a first subcarrier spacing of a random access channel;
• transmitting, to the terminal, third information related to a second subcarrier spacing of a physical uplink shared channel (PUSCH);
• and
• receiving, from the terminal, the random access preamble based on a baseband signal for a physical random access channel (PRACH), the baseband signal being generated based on an offset parameter corresponding to a combination of the first information, the second information, and the third information,
• wherein the offset parameter is “7”, based on the length of the random access preamble being 839, the first subcarrier spacing being 1.25, and the second subcarrier spacing being 15,
• wherein the offset parameter is “1”, based on the length of the random access preamble being 839, the first subcarrier spacing being 1.25, and the second subcarrier spacing being 30,
• wherein the offset parameter is “133”, based on the length of the random access preamble being 839, the first subcarrier spacing being 1.25, and the second subcarrier spacing being 60,
• wherein the offset parameter is “12”, based on the length of the random access preamble being 839, the first subcarrier spacing being 5, and the second subcarrier spacing being 15,
• wherein the offset parameter is “10”, based on the length of the random access preamble being 839, the first subcarrier spacing being 5, and the second subcarrier spacing being 30, and
• wherein the offset parameter is “7”, based on the length of the random access preamble being 839, the first subcarrier spacing being 5, and the second subcarrier spacing being 60.

A terminal in a communication system, the terminal comprising:

• a transceiver;
• and
• at least one processor coupled with the transceiver and configured to:
• receive, from a base station, first information related to a length of a random access preamble and second information related to a first subcarrier spacing of a random access channel,
• receive, from the base station, third information related to a second subcarrier spacing of a physical uplink shared channel (PUSCH),
• identify an offset parameter among a plurality of offset parameters based on a combination of the first information, the second information, and the third information,
• generate a baseband signal for a physical random access channel (PRACH) based on the offset parameters, and
• transmit the random access preamble based on the baseband signal,
• wherein the offset parameter is “7”, based on the length of the random access preamble being 839, the first subcarrier spacing being 1.25, and the second subcarrier spacing being 15,
• wherein the offset parameter is “1”, based on the length of the random access preamble being 839, the first subcarrier spacing being 1.25, and the second subcarrier spacing being 30,
• wherein the offset parameter is “133”, based on the length of the random access preamble being 839, the first subcarrier spacing being 1.25, and the second subcarrier spacing being 60,
• wherein the offset parameter is “12”, based on the length of the random access preamble being 839, the first subcarrier spacing being 5, and the second subcarrier spacing being 15,
• wherein the offset parameter is “10”, based on the length of the random access preamble being 839, the first subcarrier spacing being 5, and the second subcarrier spacing being 30, and
• wherein the offset parameter is “7”, based on the length of the random access preamble being 839, the first subcarrier spacing being 5, and the second subcarrier spacing being 60.

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

• a transceiver;
• and
• at least one processor coupled with the transceiver and configured to:
• transmit, to a terminal, first information related to a length of a random access preamble and second information related to a first subcarrier spacing of a random access channel,
• transmit, to the terminal, third information related to a second subcarrier spacing of a physical uplink shared channel (PUSCH), and
• receive, from the terminal, the random access preamble based on a baseband signal for a physical random access channel (PRACH), the baseband signal being generated based on an offset parameter corresponding to a combination of the first information, the second information, and the third information,
• wherein the offset parameter is “7”, based on the length of the random access preamble being 839, the first subcarrier spacing being 1.25, and the second subcarrier spacing being 15,
• wherein the offset parameter is “1”, based on the length of the random access preamble being 839, the first subcarrier spacing being 1.25, and the second subcarrier spacing being 30,
• wherein the offset parameter is “133”, based on the length of the random access preamble being 839, the first subcarrier spacing being 1.25, and the second subcarrier spacing being 60,
• wherein the offset parameter is “12”, based on the length of the random access preamble being 839, the first subcarrier spacing being 5, and the second subcarrier spacing being 15,
• wherein the offset parameter is “10”, based on the length of the random access preamble being 839, the first subcarrier spacing being 5, and the second subcarrier spacing being 30, and
• wherein the offset parameter is “7”, based on the length of the random access preamble being 839, the first subcarrier spacing being 5, and the second subcarrier spacing being 60.