公开(公告)号：US20200220707A1

公开(公告)日：2020-07-09

申请号：US16542468

申请日：2019-08-16

Applicant: Electronics and Telecommunications Research Institute ,  Kwangwoon University Industry-Academic Collaboration Foundation ,  FOUNDATION FOR RESEARCH AND BUSINESS, SEOUL NATIONAL UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Byung Jang JEONG ,  Jae-Han LIM ,  Hwanwoong HWANG ,  Ji-Hoon YUN

IPC: H04L7/00 ,  H04L7/033

Abstract: A backscatter communication method and apparatus based on pattern-based demodulation is disclosed. The backscatter communication method includes receiving a communication signal, and demodulating the communication signal based on a slope of the communication signal at an edge of each time interval.

公开(公告)号：US20190253135A1

公开(公告)日：2019-08-15

申请号：US16203394

申请日：2018-11-28

Applicant: Electronics and Telecommunications Research Institute ,  FOUNDATION FOR RESEARCH AND BUSINESS, SEOUL NATIONAL UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Byung Jang JEONG ,  Woo Jin BYUN ,  Ji-Hoon YUN ,  Jae-Han LIM ,  Wisnu MURTI

IPC: H04B7/22 ,  H04L1/00 ,  H04B7/0456 ,  H04B7/08

CPC classification number: H04B7/22 ,  H04B7/0473 ,  H04B7/0805 ,  H04L1/0003

Abstract: Disclosed are a communication method and communication apparatus using an ambient backscatter communication. A transmission apparatus may include generating a plurality of bitsets by fragmenting data based on a predetermined bitset length, mapping the plurality of bitsets to a plurality of switching patterns based on a data size, and controlling a reflection of a background radio frequency (RF) signal based on a corresponding mapped switching pattern, a total number of the plurality of switching patterns may be determined based on the bitset length, and each of the plurality of switching patterns may have a different length.

公开(公告)号：US20190020458A1

公开(公告)日：2019-01-17

申请号：US16116858

申请日：2018-08-29

Applicant: Electronics and Telecommunications Research Institute

Inventor： Young Jo KO ,  Tae Gyun NOH ,  Kyoung Seok LEE ,  Bang Won SEO ,  Byung Jang JEONG ,  Heesoo LEE

IPC: H04L5/00 ,  H04L1/16 ,  H04L1/18 ,  H04W72/04 ,  H04L1/00 ,  H04W72/12

Abstract: Provided is a data transmission system using a carrier aggregation. The data transmission system may assign a radio resource based on a correspondence relationship between a downlink and an uplink, and may transmit data using the assigned radio resource.

公开(公告)号：US20160381676A1

公开(公告)日：2016-12-29

申请号：US15262005

申请日：2016-09-12

Applicant: Electronics and Telecommunications Research Institute

Inventor： Bang Won SEO ,  Young Jo KO ,  Byung Jang JEONG

IPC: H04W72/04 ,  H04L5/00 ,  H04L1/00

CPC classification number: H04W72/0413 ,  H04L1/001 ,  H04L5/0023 ,  H04L5/0053 ,  H04L5/0055 ,  H04L5/0057 ,  H04W72/04

Abstract: Provided is a method of transmitting control information using a physical uplink shared channel (PUSCH) region in a system employing a multi-input multi-output (MIMO) antenna system in which transmission is performed through a plurality of layers. A method of transmitting a channel quality indicator (CQI)/precoding matrix indicator (PMI) using a PUSCH region in a system employing a MIMO antenna system in which transmission is performed through a plurality of layers includes encoding the CQI/PMI using one channel encoder, and transmitting the encoded CQI/PMI using some or all of the layers. Accordingly, it is possible to transmit uplink control information through a PUSCH region using a plurality of layers.

公开(公告)号：US20150208422A1

公开(公告)日：2015-07-23

申请号：US14268582

申请日：2014-05-02

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jae Cheol PARK ,  Kyu Min KANG ,  Sang In CHO ,  Dong Hun LEE ,  Byung Jang JEONG

IPC: H04W72/08 ,  H04W52/24 ,  H04W52/34

CPC classification number: H04W72/082 ,  H04W16/16 ,  H04W52/241 ,  H04W52/243 ,  H04W52/244 ,  H04W52/265 ,  H04W52/267 ,  H04W52/346

Abstract: Disclosed is a method of allocating radio resources, including: acquiring available channel information of a cognitive radio small cell; analyzing a channel characteristic based on the available channel information and dividing a required transmission rate of the cognitive radio small cell into required transmission rates for each available channel; and performing a power control for each available channel based on the divided required transmission rates for each available channel. The method of allocating radio resources may be performed under an interference environment in which a plurality of cognitive radio small cells is present and the plurality of cognitive radio small cells shares an available channel.

Abstract translation: 公开了一种分配无线电资源的方法，包括：获取认知无线电小区的可用信道信息; 基于所述可用信道信息分析信道特性并将所述认知无线电小区的所需传输速率划分为每个可用信道的所需传输速率; 并且基于每个可用信道的所划分的所需传输速率对每个可用信道执行功率控制。 分配无线电资源的方法可以在其中存在多个认知无线电小小区并且多个认知无线电小区分享可用信道的干扰环境下执行。

公开(公告)号：US20150201431A1

公开(公告)日：2015-07-16

申请号：US14597482

申请日：2015-01-15

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jung Sun UM ,  Hoi Yoon JUNG ,  Byung Jang JEONG ,  Sung Jin YOO ,  Jae Ick CHOI

IPC: H04W72/12 ,  H04W56/00 ,  H04W84/12 ,  H04L5/14

CPC classification number: H04W84/12 ,  H04B7/2656 ,  H04L5/0048 ,  H04L5/14 ,  H04W16/14 ,  H04W56/001

Abstract: Provided are a data frame structure of a wireless communication system, which follows a sharing protocol which may be operated to coexist with a system that operates in an unlicensed spectrum, such as a WiFi system, and the like in the wireless communication system using a licensed spectrum such as an LTE system and an operation method of the system, and a terminal and a device of a base station for the operation.

Abstract translation: 提供了一种无线通信系统的数据帧结构，其遵循共享协议，该共享协议可以被操作以与在无线通信系统中使用许可的无线通信系统中的诸如WiFi系统之类的非许可频谱中的系统共存 频谱如LTE系统和系统的操作方法，以及用于操作的基站的终端和设备。

公开(公告)号：US20150117270A1

公开(公告)日：2015-04-30

申请号：US14520401

申请日：2014-10-22

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jung Sun UM ,  Byung Jang JEONG ,  Sung Hyun HWANG ,  Hoi Yoon JUNG ,  Jae Ick CHOI

IPC: H04L5/14 ,  H04W72/04 ,  H04L5/00

CPC classification number: H04L5/1461 ,  H04B7/2656 ,  H04L5/0007 ,  H04L5/0069 ,  H04L5/1469 ,  H04W72/0446

Abstract: Disclosed are a method and an apparatus for determining a Guard Period (GP) in a Time Division Duplexing (TDD) system. A communication method based on Time Division Duplexing (TDD) includes: determining, by a base station, a guard period based on information on a distance between user equipment and the base station; and performing, by the base station, downlink transmission to the user equipment based on the determined guard period, wherein the guard period is determined based on one of a default guard period mode, a reduced guard period mode, and a zero guard period mode, and the reduced guard period mode is a mode for setting a reduced guard period, which is shorter than the default guard period set based on the default guard period mode, and the zero guard period mode is a mode for setting a length of the guard period to 0.

Abstract translation: 公开了一种用于在时分双工（TDD）系统中确定保护周期（GP）的方法和装置。 基于时分双工（TDD）的通信方法包括：基站基于用户设备与基站之间的距离的信息确定保护周期; 并且基于所确定的保护周期，由所述基站对所述用户设备进行下行链路传输，其中，所述保护周期是基于默认保护周期模式，减小保护周期模式和零保护周期模式之一来确定的， 并且减小的保护周期模式是用于设置比基于默认保护时段模式设置的默认保护时段短的保护时段的模式，并且保护保护周期模式是用于设置保护时段的长度的模式 到0。

公开(公告)号：US20140016609A1

公开(公告)日：2014-01-16

申请号：US14031844

申请日：2013-09-19

Applicant: Electronics and Telecommunications Research Institute

Inventor： Byung Jang JEONG ,  Young Jo Ko ,  Bang-Won Seo ,  Jae Young Ahn

IPC: H04L5/00

CPC classification number: H04L5/0048 ,  H04L5/0007 ,  H04L27/2607 ,  H04L27/265 ,  H04W72/0413

Abstract: Disclosed is a method for generating and transmitting a reference signal in a clustered DFT-spread OFDM transmission scheme. A method for generating and transmitting a DM-RS in a clustered DFT-spread-OFDM scheme comprises: a step of generating DM-RS sequences corresponding to the number of clusters allocated for an uplink transmission; and a step of mapping the generated DM-RS sequences to the relevant DM-RS symbol positions for each cluster. Accordingly, the method for generating and transmitting a reference signal according to the present invention, in which DM-RS sequences are allocated and transmitted on a cluster basis, uses a complete DM-RS sequence for each cluster, and therefore inter-cell interference can be weakened, and problems which might occur when applied to a multi-user MIMO (MU-MIMO) scheme can be solved.

Abstract translation: 公开了一种用于在聚集的DFT扩展OFDM传输方案中产生和发送参考信号的方法。 一种用于在聚簇DFT扩展OFDM方案中产生和发送DM-RS的方法包括：产生对应于为上行链路传输分配的簇数量的DM-RS序列的步骤; 以及将生成的DM-RS序列映射到每个簇的相关DM-RS符号位置的步骤。 因此，根据本发明的基于簇分配和发送DM-RS序列的参考信号的生成和发送方法对于每个簇使用完整的DM-RS序列，因此小区间干扰可以 被削弱，并且可以解决当应用于多用户MIMO（MU-MIMO）方案时可能出现的问题。

公开(公告)号：US20130184025A1

公开(公告)日：2013-07-18

申请号：US13717685

申请日：2012-12-17

Applicant: Electronics and Telecommunications Research Institute

Inventor： Sang In CHO ,  Kyu Min KANG ,  Byung Jang JEONG

IPC: H04W72/04

CPC classification number: H04W72/0453 ,  H04L27/0006 ,  H04W16/14 ,  H04W52/244 ,  H04W52/283 ,  H04W72/00

Abstract: Provided is a white space use system using a connection recognition signal, which is associated with technology that enables white space devices to search for and to use an available frequency band in a digital broadcasting system. In particular, provided is a white space use system using a connection recognition signal that enables even devices incapable of autonomously searching for an available channel to safely use a white space in interaction with white space devices.

Abstract translation: 提供了一种使用连接识别信号的白色空间使用系统，其与能够使空白设备在数字广播系统中搜索和使用可用频带的技术相关联。 特别地，提供了一种使用连接识别信号的白色空间使用系统，其能够使得能够自主地搜索可用信道的装置能够安全地使用与空白设备交互的空白空间。

公开(公告)号：US20230021567A1

公开(公告)日：2023-01-26

申请号：US17866727

申请日：2022-07-18

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

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

IPC: G01S7/02 ,  G01S13/931

Abstract: Disclosed is a radar detection assistant apparatus for increasing detection accuracy when detecting an object using a radar detection device. The radar detection assistant apparatus includes a radar signal receiver for adjusting a radar candidate signal received through a reception antenna to a predetermined magnitude and filtering out a signal other than the radar candidate signal, a radar signal analyzer for receiving the radar candidate signal from the radar signal receiver and determining whether or not the radar candidate signal is a preset radar signal, a radar signal production controller for generating a control signal for an assistant apparatus production signal or an assistant apparatus reproduction signal on the basis of at least one of pieces of information on a type, a bandwidth, and a period of the radar candidate signal received from the radar signal analyzer, and a radar signal producer.