公开(公告)号：US20140191914A1

公开(公告)日：2014-07-10

申请号：US14084689

申请日：2013-11-20

Applicant: Electronics and Telecommunications Research Institute

Inventor： JeongHo JU ,  Soon Young EOM ,  Joung Myoun KIM ,  Myung Sun SONG ,  Jae Ick CHOI

IPC: H01Q21/30

CPC classification number: H01Q9/0464 ,  H01Q9/28 ,  H01Q21/26 ,  H01Q25/002

Abstract: A device includes a feeding circuitry, a basic mode radiator for forming a basic mode main beam pattern having one or two orthogonal polarizations based on first two orthogonal inputs received from the feeding circuitry, and a higher-order mode radiator for forming a higher-order mode conical beam pattern having one or two orthogonal polarizations based on second two orthogonal inputs received from the feeding circuitry.

Abstract translation: 一种装置包括馈电电路，基于从馈电电路接收的基于前两个正交输入形成具有一个或两个正交偏振的基本模式主波束图案的基本模式辐射器，以及用于形成高阶 基于从馈电电路接收的第二两个正交输入，具有一个或两个正交偏振的模式锥形光束图案。

公开(公告)号：US20140146736A1

公开(公告)日：2014-05-29

申请号：US14010760

申请日：2013-08-27

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Igor KIM ,  Jinhyung OH ,  Gwangzeen KO ,  Myung Sun SONG

IPC: H04W4/08

CPC classification number: H04W4/08

Abstract: An apparatus for grouping a plurality of stations in a multi-transmission environment includes an SNR (Signal to Noise Ratio) measuring unit configured to measure SNR values of the stations existing in the multi-transmission environment. Further, the apparatus includes a grouping unit configured to group the stations into several subgroups depending on the SNR values, wherein a leader is defined in each subgroup. Furthermore, the apparatus includes a control unit configured to determine an MCS (Modulation and Coding Scheme) intended for each subgroup and form different A-MPDU (Aggregated MAC Protocol Data Unit) for each subgroup separately to send to each subgroup in a multicast transmission.

Abstract translation: 用于在多传输环境中对多个站进行分组的装置包括：被配置为测量存在于多传输环境中的站的SNR值的SNR（信噪比）测量单元。 此外，该设备包括分组单元，其被配置为根据SNR值将站分组成几个子组，其中在每个子组中定义了一个引导者。 此外，该装置包括：控制单元，被配置为确定针对每个子组的MCS（调制和编码方案），并且针对每个子组分别形成用于在多播传输中发送给每个子组的不同A-MPDU（聚合MAC协议数据单元）。

公开(公告)号：US20200014427A1

公开(公告)日：2020-01-09

申请号：US16578100

申请日：2019-09-20

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jae Seung LEE ,  Jin Hyung OH ,  Gwang Zeen KO ,  Hyun Duk KANG ,  Hyoung Jin KWON ,  Myung Sun SONG ,  Sok Kyu LEE ,  Min ho CHEONG ,  Jae Ick CHOI

IPC: H04B7/024 ,  H04B7/0452 ,  H04B7/06 ,  H04L1/00 ,  H04W48/00

Abstract: Disclosed is a communication method using interference alignment in a wireless local area network (WLAN). An access point (AP) according to one embodiment may receive first channel information between a station associated with the AP and the AP and second channel information between the station and a neighboring AP to perform interference alignment in cooperation with the AP from the station, and perform interference alignment based on the first channel information and the second channel information.

公开(公告)号：US20180027608A1

公开(公告)日：2018-01-25

申请号：US15722492

申请日：2017-10-02

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jin Hyung OH ,  Gwang Zeen KO ,  Hyun Duk KANG ,  Igor KIM ,  Myung Sun SONG

IPC: H04W80/02 ,  H04L1/18 ,  H04W72/00 ,  H04W84/12 ,  H04W28/06

CPC classification number: H04W80/02 ,  H04L1/1861 ,  H04W28/06 ,  H04W72/00 ,  H04W84/12

Abstract: Provided are a frame transmission method performed in an access point (AP), a frame reception method performed in a terminal, and an AP. The frame transmission method performed in an AP includes acquiring a channel for transmitting a first data unit of a first terminal, when a data unit to be transmitted to at least one terminal other than the first terminal is in the AP, generating a physical layer convergence procedure (PLCP) protocol data unit (PPDU) including the first data unit and the data unit to be transmitted to the at least one terminal, and transmitting the PPDU to the first terminal and the at least one terminal. Accordingly, it is possible to improve the performance of a wireless local area network (WLAN).

公开(公告)号：US20170155467A1

公开(公告)日：2017-06-01

申请号：US15251198

申请日：2016-08-30

Applicant: Electronics and Telecommunications Research Institute

Inventor： Min Soo KANG ,  Kwang Seon KIM ,  Myung Sun SONG ,  Woo Jin BYUN ,  Bong Su KIM

IPC: H04J14/06 ,  H01Q5/55 ,  H01Q9/04

CPC classification number: H04J14/06 ,  H01Q5/55 ,  H01Q9/0407 ,  H01Q21/00 ,  H04B10/112 ,  H04B10/116

Abstract: An apparatus for orbital angular momentum (OAM) mode combination and an antenna apparatus for multi-mode generation are provided. The apparatus for OAM mode combination includes three input ports configured to receive independent OAM mode signals, four output ports configured to output OAM mode signals with the same or different phase delays; and a circuit element configured to simultaneously combine or distribute the OAM mode signals by controlling phases of output signals output through the four output ports to be different depending on the OAM mode signals received through the input ports.

公开(公告)号：US20160135117A1

公开(公告)日：2016-05-12

申请号：US14890883

申请日：2014-05-09

Applicant: Electronics and Telecommunications Research Institute

Inventor： Hyun Duk KANG ,  Gwang Zeen KO ,  Myung Sun SONG

IPC: H04W48/16 ,  H04W24/02 ,  H04W16/14

CPC classification number: H04W16/14

Abstract: Disclosed are methods of exchanging messages necessary for interaction among entities in a coexistence management system that manages a plurality of frequency sharing devices. Specifically, a method of exchanging messages in a coexistence management system including a coexistence enabler (CE), a coexistence manager (CM), and a coexistence discovery and information server (CDIS) includes generating, by the CM, a ReconfigurationRequest message, sending the ReconfigurationRequest message to the CE, and waiting for a ReconfigurationResponse message from the CE. The ReconfigurationRequest message includes at least one of an operating channel list of a white space object (WSO) served by the CE, a transmission power limitation, a flag indicating whether or not a channel is shared, a transmission schedule, and channel classification information.

Abstract translation: 公开了在管理多个频率共享设备的共存管理系统中交换实体之间交互所需的消息的方法。 具体地说，在包括共存启动器（CE），共存管理器（CM）和共存发现和信息服务器（CDIS）的共存管理系统中交换消息的方法包括由CM生成ReconfigurationRequest消息，发送 ReconfigurationRequest消息给CE，并等待来自CE的ReconfigurationResponse消息。 重配置请求消息包括由CE服务的白空间对象（WSO）的操作信道列表，发送功率限制，指示信道是否被共享的标志，传输调度和信道分类信息中的至少一个。

公开(公告)号：US20150341847A1

公开(公告)日：2015-11-26

申请号：US14621523

申请日：2015-02-13

Applicant: Electronics and Telecommunications Research Institute

Inventor： Hyun Duk KANG ,  Gwang Zeen KO ,  Jin Hyung OH ,  Igor KIM ,  Myung Sun SONG

IPC: H04W48/16

CPC classification number: H04W48/16 ,  H04W24/02 ,  H04W84/12

Abstract: Disclosed are a method for avoiding interference in a wireless local area network system and an apparatus for performing the same. The method for avoiding interference by an access point in a wireless local area network system, includes receiving channel scan results from a station associated with the access point; setting connection with an adjacent access point based on the channel scan results; determining an access point to be associated with the station through negotiation with the adjacent access point; and transmitting a reassociation request message to request reassociation with the adjacent access point to the station when the negotiation with the adjacent access point succeeds.

Abstract translation: 公开了一种避免无线局域网系统中的干扰的方法及其执行装置。 用于避免无线局域网系统中的接入点的干扰的方法包括从与接入点相关联的站接收信道扫描结果; 根据频道扫描结果设置与相邻接入点的连接; 通过与所述相邻接入点协商来确定与所述站相关联的接入点; 以及当与相邻接入点的协商成功时，发送重新关联请求消息以请求与所述站的相邻接入点的重新关联。

公开(公告)号：US20150110045A1

公开(公告)日：2015-04-23

申请号：US14508006

申请日：2014-10-07

Applicant: Electronics and Telecommunications Research Institute

Inventor： Gwang Zeen KO ,  Hyun Duk KANG ,  Jin Hyung OH ,  Igor KIM ,  Myung Sun SONG

IPC: H04W72/08

CPC classification number: H04W72/085 ,  H04W72/0453

Abstract: Provided is a communication device and a method of allocating a partial band to avoid interference in the partial band, wherein the method includes extracting at least one partial band in which interference occurs from a plurality of partial bands constituting an operating channel of a user terminal, determining an available partial band aside from the extracted partial band, and allocating the determined partial band to the user terminal.

Abstract translation: 提供了一种分配部分频带以避免部分频带中的干扰的通信装置和方法，其中，该方法包括从构成用户终端的操作信道的多个部分频带中提取干扰发生的至少一个部分频带， 确定除了所提取的部分频带之外的可用的部分频带，以及将确定的部分频带分配给用户终端。

公开(公告)号：US20240175979A1

公开(公告)日：2024-05-30

申请号：US18504343

申请日：2023-11-08

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Myung Sun SONG ,  Hyung Ju KIM ,  Sung Jin YOO ,  Byung Jang JEONG ,  Seung Keun PARK ,  In Kui CHO

IPC: G01S7/35

CPC classification number: G01S7/358 ,  G01S13/343

Abstract: Exemplary embodiments provide a radar apparatus having a plurality of antenna elements and enabling to reduce a number of ADCs as long as being allowable according to a bandwidth of the ADC, reduce a chip area occupied by the ADC and interconnections in an integrated circuit, and prevent a synchronization problem between the ADCs by sampling receive signals of multiple channels at once. Frequencies of local oscillation signals used for downconverting receive signals are set to be different from each other by an amount of an offset frequency, so that each of band-limited receive signals obtained through respective RF paths may occupy a different position on a frequency axis of a frequency domain. Downconverted receive signals are combined into a single signal and converted into a single digital signal stream, and a signal processing of the digital signal stream in a digital domain enables to obtain target data.

公开(公告)号：US20230168339A1

公开(公告)日：2023-06-01

申请号：US17952481

申请日：2022-09-26

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Hyung Ju KIM ,  Myung Sun SONG ,  Sung Jin YOO ,  Byung Jang JEONG

IPC: G01S7/298

CPC classification number: G01S7/298

Abstract: An operation method of a radar signal processing apparatus in a radar system may include: generating pulse signals of a number of any one sampling rate having different phases; transmitting the pulse signals to a target; receiving reflected pulse signals reflected back from the target; generating a composite signal by sampling the reflected pulse signals and combining the sampled reflected pulse signals to match the phases; and extracting target information from the composite signal.