Method and apparatus for performing random access in wireless communication system
AssigneeSamsung Electronics Co., Ltd.
InventorsYinan Qi, Mythri Hunukumbure
Life of this patent
Estimating the term…
Abstract
Provided are methods and apparatuses for performing a random access of a terminal in a wireless communication system. A method, performed by a terminal, of performing a random access, according to an embodiment, includes receiving preamble configuration information from a base station, obtaining a RACH (random access channel) preamble scaled in length in proportion to a difference between an expected minimum distance and an expected maximum distance to the base station from opposed edges of a cell served by the base station, based on the preamble configuration information and transmitting the obtained RACH preamble to the base station to access a NTN (non-terrestrial network).
Claims15
A method performed by a base station serving a cell in a non-terrestrial network (NTN) system, the method comprising:
- determining a differential delay indicating a difference between a first distance from a first edge of the cell to the base station and a second distance from a second edge of the cell to the base station;
- determining a random access preamble format for the NTN system, to be extended based on the determined differential delay;
- transmitting, to a terminal, configuration information associated with the random access preamble format;
- and
- receiving, from the terminal, information associated with a preamble, which is identified based on the transmitted configuration information.
A method performed by a terminal associated with a cell served by a base station in a non-terrestrial network (NTN) system, the method comprising:
- receiving, from the base station, configuration information associated with a random access preamble format for the NTN system;
- identifying a preamble based on the random access preamble format, which is determined to be extended based on a differential delay indicating a difference between a first distance from a first edge of the cell to the base station and a second distance from a second edge of the cell to the base station;
- and
- transmitting, to the base station, information associated with the preamble.
A base station serving a cell in a non-terrestrial network (NTN) system, the base station comprising:
- a transceiver;
- and
- at least one processor configured to:
- determine a differential delay indicating a difference between a first distance from a first edge of the cell to the base station and a second distance from a second edge of the cell to the base station;
- determine a random access preamble format for the NTN system, to be extended based on the determined differential delay;
- transmit, to a terminal via the transceiver, configuration information associated with the random access preamble format;
- and
- receive, from the terminal via the transceiver, information associated with a preamble, which is identified based on the transmitted configuration information.
Dependencies are inferred from the claim text.