Method for performing random access procedure between terminal and base station in wireless communication system, and device supporting same

A method of performing a random access procedure with a user equipment by a base station in a wireless communication system, the method comprising:

• transmitting configuration information for a random access to the user equipment through a first transmission beam;
• based on the configuration information including first information related to a maximum number of simultaneously transmittable beams allowed for the user equipment at a specific timing point and identification of the transmittable beams:
• simultaneously receiving a Physical Random Access Channel (PRACH) using a plurality of beams with different beam directions of which number is equal to or smaller than the maximum number of the beams simultaneously transmittable by the user equipment at the specific timing point;
• and
• based on the configuration information including second information related to a maximum repetition count of a PRACH transmission over a single Random Access Channel (RACH) resource allowed for the user equipment during a predetermined time interval and identification of sweeping beams:
• receiving the PRACH repeatedly by sweeping a plurality of beams of which number is equal to or smaller than the maximum repetition count allowed for the user equipment during the predetermined time interval,
• wherein based on the configuration information including the first information, the configuration information further includes information on a minimum angle difference between beams determined based on a number of beams simultaneously transmittable by the user equipment, and
• wherein based on the configuration information including the second information, the configuration information further includes information on the minimum angle difference between beams determined based on a number of PRACH signals repeatedly transmitted by the user equipment during the predetermined time interval.

A user equipment configured to perform a random access procedure with a base station in a wireless communication system, the user equipment comprising:

• a transmitting unit;
• a receiving unit;
• and
• a processor configured to operate by being connected to the transmitting unit and the receiving unit,
• wherein the processor is further configured to:
• receive configuration information for a random access from the base station;
• based on the configuration information including first information related to a maximum number of simultaneously transmittable beams allowed for the user equipment at a specific timing point and identification of the transmittable beams:
• simultaneously transmit a Physical Random Access Channel (PRACH) using a plurality of beams with different beam directions of which number is equal to or smaller than the maximum number of the beams simultaneously transmittable by the user equipment at the specific timing point;
• and
• based on the configuration information including second information related to a maximum repetition count of a PRACH transmission over a single Random Access Channel (RACH) resource allowed for the user equipment during a predetermined time interval and identification of sweeping beams:
• transmit the PRACH repeatedly by sweeping a plurality of beams of which number is equal to or smaller than the maximum repetition count allowed for the user equipment during the predetermined time interval,
• wherein based on the configuration information including the first information, the configuration information further includes information on a minimum angle difference between beams determined based on a number of beams simultaneously transmittable by the user equipment, and
• wherein based on the configuration information including the second information, the configuration information further includes information on the minimum angle difference between beams determined based on a number of PRACH signals repeatedly transmitted by the user equipment during the predetermined time interval.

A base station configured to perform a random access procedure with a user equipment in a wireless communication system, the base station comprising:

• a transmitting unit;
• a receiving unit;
• and
• a processor configured to operate by being connected to the transmitting unit and the receiving unit,
• wherein the processor is further configured to:
• transmit configuration information for a random access to the user equipment through a first transmission beam;
• based on the configuration information including first information related to a maximum number of simultaneously transmittable beams allowed for the user equipment at a specific timing point and identification of the transmittable beams:
• simultaneously receiving a Physical Random Access Channel (PRACH) using a plurality of beams with different beam directions of which number is equal to or smaller than the maximum number of the beams simultaneously transmittable by the user equipment at the specific timing point;
• and
• based on the configuration information including second information related to a maximum repetition count of a PRACH transmission over a single Random Access Channel (RACH) resource allowed for the user equipment during a predetermined time interval and identification of sweeping beams:
• receiving the PRACH repeatedly by sweeping a plurality of beams of which number is equal to or smaller than the maximum repetition count allowed for the user equipment during the predetermined time interval,
• wherein based on the configuration information including the first information, the configuration information further includes information on a minimum angle difference between beams determined based on a number of beams simultaneously transmittable by the user equipment, and
• wherein based on the configuration information including the second information, the configuration information further includes information on the minimum angle difference between beams determined based on a number of PRACH signals repeatedly transmitted by the user equipment during the predetermined time interval.