Method for performing random access procedure by terminal in wireless communication system supporting unlicensed band and terminal for performing same
AssigneeLG Electronics Inc.
InventorsSeonwook Kim, Changhwan Park, Joonkui Ahn, Suckchel Yang
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Abstract
The present invention provides a method for performing a random access procedure by a terminal in a wireless communication system supporting an unlicensed band and a terminal for performing the same. Particularly, the present invention provides a method for, when a terminal and a base station can transmit or receive a signal using various beam resources, performing a random access procedure for the base station by the terminal via an unlicensed band, and the terminal for performing the same.
Claims14
A method of performing a random access procedure by a user equipment (UE) in a wireless communication system supporting an unlicensed band, the method comprising:
- performing a first channel access procedure for transmitting a random access channel (RACH) preamble in the unlicensed band during a first time unit;
- when the first channel access procedure succeeds, transmitting the RACH preamble based on a first configuration during the first time unit;
- and
- when the first channel access procedure fails, performing a second channel access procedure for transmitting the RACH preamble in the unlicensed band during a second time unit and transmitting the RACH preamble based on a second configuration during the second time unit depending on whether the second channel access procedure succeeds.
A user equipment (UE) for performing a random access procedure in a wireless communication system supporting an unlicensed band, the UE comprising:
- a transmitter;
- a receiver;
- and
- a processor connected to the transmitter and the receiver,
- wherein the processor is configured to:
- perform a first channel access procedure for transmitting a random access channel (RACH) preamble in the unlicensed band during a first time unit;
- when the first channel access procedure succeeds, transmit the RACH preamble based on a first configuration during the first time unit;
- and
- when the first channel access procedure fails, perform a second channel access procedure for transmitting the RACH preamble in the unlicensed band during a second time unit and transmit the RACH preamble based on a second configuration during the second time unit depending on whether the second channel access procedure succeeds.
Dependencies are inferred from the claim text.