公开(公告)号：US20240422595A1

公开(公告)日：2024-12-19

申请号：US18742419

申请日：2024-06-13

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Yong Jin KWON ,  An Seok LEE ,  Hee Soo LEE ,  Seung Jae BAHNG ,  Yun Joo KIM ,  Hyun Seo PARK ,  Jung Bo SON ,  Yu Ro LEE

IPC: H04W24/08

Abstract: Proposed are an apparatus and a method for an intelligence beam management operation in a wireless communication system. An operation method of a user equipment (UE) in a wireless communication system includes receiving, from a base station (BS), configuration of a measurement set including beam entirety information of the base station used in beam measurement, receiving information on beam measurement from the base station, predicting the measurement set on the basis of the information on beam measurement, transmitting information on a recommended measurement set or a restricted measurement set to the base station, the information on the recommended measurement set and the restricted measurement set being in a bitmap form, and receiving a beam measurement result based on a modified measurement set from the base station.

公开(公告)号：US20220272716A1

公开(公告)日：2022-08-25

申请号：US17681212

申请日：2022-02-25

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： An Seok LEE ,  Heesoo LEE ,  Seung Jae BAHNG ,  Jung Sook BAE

IPC: H04W72/12 ,  H04W24/02 ,  H04W76/15 ,  H04W16/28 ,  H04W4/40

Abstract: An operation method performed by an access point in a communication system may comprise: transmitting, to a first station, a first frame by using a third communication scheme, the first frame including information on an address of the first station, a first transmission time length, a first reception order, and a first communication scheme to be used for transmitting data to the first station, and information on a second transmission time length, a second reception order, and a second communication scheme to be used for transmitting second data to one or more second stations; receiving, from the first station, a first response frame for the first frame from the first station at a first reception time; and receiving, from the second station, a second response frame for the first frame at a second reception time.

公开(公告)号：US20220150719A1

公开(公告)日：2022-05-12

申请号：US17520165

申请日：2021-11-05

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Soon Gi PARK ,  Jun Sik KIM ,  Seung Jae BAHNG ,  Jung Sook BAE ,  Heesoo LEE

IPC: H04W16/28 ,  H04B7/185

Abstract: A beam alignment method performed by a first communication node in a communication system may comprise: identifying a position of a first antenna of the first communication node; configuring a first coordinate system based on a physical position and direction of the first antenna, based on information on the position of the first antenna; identifying a position of a second antenna of a second communication node of the communication system; converting information on the position of the second antenna into coordinate information based on the first coordinate system; calculating direction change values of the first antenna based on the information on the position of the second antenna, which is converted based on the first coordinate system; changing a direction of the first antenna based on the direction change values of the first antenna; and updating a beam alignment state between the first and second antennas.

公开(公告)号：US20230171675A1

公开(公告)日：2023-06-01

申请号：US17994914

申请日：2022-11-28

Applicant: Electronics and Telecommunications Research Institute

Inventor： An Seok LEE ,  Heesoo LEE ,  Seung Jae BAHNG ,  Jung Sook BAE

IPC: H04W48/08 ,  H04B7/06 ,  H04W16/28 ,  H04B7/15

CPC classification number: H04W48/08 ,  H04B7/0695 ,  H04W16/28 ,  H04B7/15

Abstract: An operation method of a first device in a communication system may comprise: receiving, at a second device, a primary synchronization signal block (SSB) including first SSBs for the first device; feeding back to the second device an index of a first SSB with a highest received signal strength among the first SSBs of the first SSB set; receiving, at the second device, a second SSB set including the first SSBs for the first device and second SSBs for a third device; transmitting to the third device the second SSBs for the third device in the second SSB set; and forwarding an index of a second SSB with a highest received signal strength among the second SSBs to the second device, the index being received from the third device.

公开(公告)号：US20220408331A1

公开(公告)日：2022-12-22

申请号：US17826569

申请日：2022-05-27

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Soon Gi PARK ,  Jun Sik KIM ,  Seung Jae BAHNG ,  Jung Sook BAE ,  Heesoo LEE

IPC: H04W36/16 ,  H04W36/30 ,  H04W36/08

Abstract: A method for controlling base stations in a wireless communication system may include: performing a monitoring operation on a first base station forming a first cell in a predetermined communication area; determining whether the first base station needs to be replaced; when the first base station needs to be replaced, controlling a second base station to move in a direction of the first base station and form a second cell; when coverages of the first and second cells overlap fully or partially, decreasing a transmit power of the first base station and increasing a transmit power of the second base station; and in response to identifying that all of one or more communication nodes connected to the first cell are handed over to the second base station, determining that the first base station is successfully replaced with the second base station.

公开(公告)号：US20220224386A1

公开(公告)日：2022-07-14

申请号：US17575596

申请日：2022-01-13

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： An Seok LEE ,  Heesoo LEE ,  Seung Jae BAHNG ,  Jung Sook BAE

IPC: H04B7/06 ,  H04L5/00 ,  H04B7/0413 ,  H04L25/02

Abstract: An operation method of a terminal for initial access in a communication system may comprise: receiving a plurality of SSBs having different indexes through a plurality of antennas included in a base station; calculating a channel capacity using the plurality of SSBs; feeding back, to the base station, index(es) of one or more SSBs for having a maximum channel capacity among the plurality of SSBs; and performing communication with the base station through a combination of two or more antennas that have transmitted the one or more SSBs for having the maximum channel capacity among the plurality of antennas.

公开(公告)号：US20160192236A1

公开(公告)日：2016-06-30

申请号：US14929630

申请日：2015-11-02

Applicant: Electronics and Telecommunications Research Institute

Inventor： Kyung Yeol SOHN ,  Seung Jae BAHNG ,  Hoon LEE

IPC: H04W28/06 ,  H04W74/08

CPC classification number: H04L27/00 ,  H04J13/0062 ,  H04L27/2613 ,  H04L27/2636 ,  H04L27/2692

Abstract: Disclosed are a method and an apparatus that efficiently generate a DFT-ed preamble sequence used in uplink PRACH transmission of a wireless communication system. The method for generating a DFT-ed preamble sequence in a wireless communication system includes: calculating a first index value corresponding to the length of a DFT-ed preamble sequence by using control information; extracting a value on a unit circle corresponding to the first index value or a value on the unit circle corresponding to a second index value acquired by transforming the first index value according to a preamble format; reflecting a sign on the unit circle including the corresponding index value to the extracted value on the unit circle; and multiplying a value to which the sign is reflected by an initial sequence value according to a root index.

Abstract translation: 公开了一种有效地生成在无线通信系统的上行链路PRACH传输中使用的DFT编辑的前同步码序列的方法和装置。 用于在无线通信系统中生成DFT编辑的前同步码序列的方法包括：通过使用控制信息来计算与DFT编辑的前导序列的长度对应的第一索引值; 提取与第一索引值相对应的单位圆上的值或通过根据前导码格式变换第一索引值而获得的与第二索引值对应的单位圆上的值; 将单位圆上的符号反映为单位圆上提取的值的相应指标值; 并且根据根指数将符号反映的初始序列值乘以该值。

公开(公告)号：US20150229384A1

公开(公告)日：2015-08-13

申请号：US14612840

申请日：2015-02-03

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Go San NOH ,  Seung Jae BAHNG ,  Jun Woo KIM ,  Youn Ok PARK

IPC: H04B7/10 ,  H04L1/00 ,  H04L1/20

CPC classification number: H04B7/10 ,  H04L1/0034 ,  H04L1/20

Abstract: Disclosed is a communication system including a first communication apparatus and a second communication apparatus that communicate with each other through a dual polarization antenna, the system including: a first communication apparatus which calculates a co-polar ratio defined by a ratio of a first channel gain for a first polarization and a second channel gain for a second polarization; and a second communication apparatus which calculates a first rotation angle for the first polarization and a second rotation angle for the second polarization, respectively, by using the co-polar ratio transferred from the first communication apparatus, and transmits to the first communication apparatus a first rotational polarization generated by rotating the first polarization at the first rotation angle and a second rotational polarization generated by rotating the second polarization at the second rotation angle.

Abstract translation: 公开了一种包括通过双极化天线彼此通信的第一通信装置和第二通信装置的通信系统，该系统包括：第一通信装置，其计算由第一信道增益的比率定义的共极比 用于第一偏振和用于第二偏振的第二通道增益; 以及第二通信装置，其通过使用从第一通信装置传送的共极比分别计算用于第一极化的第一旋转角度和第二旋转角度，并且向第一通信装置发送第一极化 通过以第一旋转角度旋转第一偏振而产生的旋转偏振和通过以第二旋转角旋转第二偏振而产生的第二旋转极化。