公开(公告)号：US20200187139A1

公开(公告)日：2020-06-11

申请号：US16625627

申请日：2018-06-18

Applicant: Samsung Electronics Co., Ltd.

Inventor： Jonghyeuk LEE ,  Hyuncheol KIM

IPC: H04W56/00 ,  H04W74/08

Abstract: The present disclosure relates to a 5G or pre-5G communication system for supporting a higher data rate, after a 4G communication system such as an LTE system. The present invention relates to a method for guaranteeing a quality of a service in a wireless communication system. Specifically, a method for a base station according to an embodiment of the present invention comprises the steps of: receiving a PRACH from a terminal; identifying a transmission pattern of the PRACH for a symbol group including a plurality of symbols transmitted in a single tone; acquiring information of phase difference between tones, in which the PRACH has been received, according to multiple intervals between symbol groups on the basis of the transmission pattern of the PRACH; estimating a phase offset on the basis of the information of phase difference; and generating uplink timing information for transmission to the terminal, by using a timing offset converted from the estimated phase offset.

公开(公告)号：US20210168871A1

公开(公告)日：2021-06-03

申请号：US16772963

申请日：2018-12-14

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jonghyeuk LEE ,  Hyuncheol KIM ,  Soongyoon CHOI

IPC: H04W74/08 ,  H04W56/00

Abstract: The present disclosure relates to a method and apparatus for transmitting and receiving signals in a wireless communication system. According to an embodiment of the present disclosure, random access signals including preamble sequences transmitted from a user equipment (UE) may be detected during a plurality of observation periods. A temporary timing advance (TA) value may be determined based on a preamble sequence of a random access signal having greater signal strength among the plurality of random access signals detected in the plurality of observation periods. A final TA value may be acquired based on the temporary TA value according to a result of comparison between the strengths of the random access signals received in the plurality of observation periods and a preset threshold value. A random access response signal including the final TA value may be transmitted to the UE.

公开(公告)号：US20240365397A1

公开(公告)日：2024-10-31

申请号：US18767136

申请日：2024-07-09

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jonghyeuk LEE ,  Hyuncheol KIM

IPC: H04W74/0833 ,  H04W56/00 ,  H04W74/08

CPC classification number: H04W74/0833 ,  H04W56/0045 ,  H04W74/0866

Abstract: The present disclosure relates to a 5th generation (5G) or pre-5G communication system for supporting a higher data transmission rate beyond a 4th generation (4G) communication system such as long term evolution (LTE). The present disclosure includes a method carried out by a terminal in a wireless communication system. The method may comprise: receiving one or more preambles from a terminal; acquiring correlation values between a plurality of symbol groups corresponding to the one or more preambles; acquiring a timing offset value based on the correlation values, and subcarrier difference information of the plurality of symbol groups; generating uplink timing information based on the timing offset value; and transmitting, to the terminal, a random access response (RAR) including the uplink timing information.

公开(公告)号：US20180278452A1

公开(公告)日：2018-09-27

申请号：US15546907

申请日：2016-01-27

Applicant: Samsung Electronics Co., Ltd.

Inventor： Hayoung YANG ,  Seijoon SHIM ,  Jonghyeuk LEE

IPC: H04L27/26

CPC classification number: H04L27/2614 ,  H04B1/0071 ,  H04L5/001 ,  H04L27/2618

Abstract: Provided is a power control method of a transmitter. The method may include: generating a first aggregated carrier signal by aggregating multiple carrier signals; determining whether at least one peak exceeding a preset threshold is detected among the peaks of the first aggregated carrier signal; generating, if at least one peak exceeding the preset threshold is detected, at least one cancellation signal based on the detected at least one peak; and mapping the at least one cancellation signal to reserved subcarriers. It is possible to reduce the PAPR at the side of an amplifier by applying a tone reservation technique to multicarrier signals.