公开(公告)号：US20150229499A1

公开(公告)日：2015-08-13

申请号：US14599640

申请日：2015-01-19

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

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

IPC: H04L27/00

CPC classification number: H04L27/0006

Abstract: The present disclosure relate to a spectrum sensing method and a spectrum sensing device. The spectrum sensing method includes: (a) sampling a received signal: (b) calculating a first operation value relating to a strength of the received signal based on the sampled signal; (c) searching for a first frequency band having the largest correlation with an input signal based on the sampled signal; (d) calculating a first residual component signal by removing a signal component in the first frequency band from the received signal; (e) calculating a second operation value relating to a strength of the first residual component signal; and (f) determining whether the frequency band occupied in the received signal is present based on a relative value of the first operation value and the second operation value.

Abstract translation: 本公开涉及一种频谱感测方法和频谱感测装置。 频谱感测方法包括：（a）对接收信号进行采样;（b）基于采样信号计算与接收信号的强度有关的第一操作值; （c）基于采样信号搜索与输入信号具有最大相关性的第一频带; （d）通过从接收信号中去除第一频带中的信号分量来计算第一残差分量信号; （e）计算与第一残差分量信号的强度相关的第二运算值; 以及（f）基于第一操作值和第二操作值的相对值来确定接收信号中占用的频带是否存在。

公开(公告)号：US20140200017A1

公开(公告)日：2014-07-17

申请号：US13920504

申请日：2013-06-18

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jung Sun UM ,  Jae Hyun PARK ,  Byung Jang JEONG ,  Sang Won KIM ,  Jin Suk PAK

IPC: H04L5/06

CPC classification number: H04L5/006 ,  H04L5/0023 ,  H04L5/0035 ,  H04L5/0085 ,  H04L27/0006

Abstract: To perform communication in a cognitive radio network, a cognitive radio apparatus according to an exemplary embodiment includes: an estimation module configured to generate a channel estimation signal to be transmitted to a predetermined reception apparatus positioned in a predetermined channel in the case of selecting the predetermined channel from among multiple channels; a communication module configured to transmit the channel estimation signal to the predetermined reception apparatus, and to receive a channel response signal from the predetermined reception apparatus; and a control module configured to control the communication module so that at least one of a communication signal set with respect to the predetermined channel and a variable communication signal obtained by varying the communication signal is transmitted to the predetermined reception apparatus, when it is determined that the predetermined channel is positioned in a deep fading section based on the channel response signal.

Abstract translation: 为了在认知无线电网络中执行通信，根据示例性实施例的认知无线电设备包括：估计模块，被配置为在选择预定的情况下，生成要发送到定位在预定信道中的预定接收设备的信道估计信号 频道来自多个频道; 通信模块，被配置为将所述信道估计信号发送到所述预定接收装置，并从所述预定接收装置接收信道响应信号; 以及控制模块，其被配置为控制所述通信模块，使得相对于所述预定信道设置的通信信号和通过改变所述通信信号获得的可变通信信号中的至少一个被发送到所述预定接收装置，当确定 基于信道响应信号将预定信道定位在深衰落部分中。

公开(公告)号：US20140198836A1

公开(公告)日：2014-07-17

申请号：US13920516

申请日：2013-06-18

Applicant: Electronics and Telecommunications Research Institute

Inventor： Sun Min LIM ,  Hoi Yoon JUNG ,  Sang Won KIM ,  Byung Jang JEONG

IPC: H04B1/10

CPC classification number: H03M7/3062

Abstract: Disclosed is a method for wideband spectrum sensing using compressive sensing, the method including: acquiring a sampling signal by applying a modulated wideband converter (MWC) to a received signal; and acquiring a restoration signal corresponding to the received signal by using a compressive sensing restoration algorithm from the sampling signal, and a mixing signal multiplied by the received signal at the time of applying the MWC, as a signal transformed from a first mixing signal having a periodic waveform, includes a second mixing signal to remove a partial frequency area from the received signal through the application of the MWC.

Abstract translation: 公开了一种使用压缩感测的宽带频谱感测的方法，该方法包括：通过将调制宽带转换器（MWC）应用于接收信号来获取采样信号; 以及通过使用来自采样信号的压缩感测恢复算法和在应用MWC时乘以接收信号的混合信号来获取与接收信号相对应的恢复信号，作为从具有 周期性波形包括通过应用MWC从接收信号中去除部分频率区域的第二混合信号。

公开(公告)号：US20140171072A1

公开(公告)日：2014-06-19

申请号：US13898863

申请日：2013-05-21

Applicant: Electronics and Telecommunications Research Institute

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

IPC: H04W48/16

CPC classification number: H04W16/14 ,  H04W72/06

Abstract: Disclosed are an apparatus and a method of calculating available channels considering a priority in a TVWS. An apparatus for calculating available channels considering a priority in a TVWS according to the present invention includes: a communication module configured to receive a request for information on usable available channels from a TV Band Device (TVBD); an available channel calculation unit configured to calculate one or more available channels usable by the TVBD based on one or more predetermined reference parameters according to the request; a priority assignment unit configured to assign a priority to each of the calculated available channels, generate an available channel list including the available channels to which the priorities are assigned, and provide the TVBD with the generated available channel list; and a database configured to store the available channels, to which the priorities are assigned, calculated for each TVBD.

Abstract translation: 公开了考虑TVWS中的优先级来计算可用信道的装置和方法。 根据本发明的考虑TVWS中的优先级的可用信道的计算装置包括：通信模块，被配置为从TV频带设备（TVBD）接收关于可用可用信道的信息的请求; 可用信道计算单元，被配置为根据所述请求计算基于一个或多个预定参考参数的TVBD可用的一个或多个可用信道; 优先级分配单元，被配置为为每个所计算的可用信道分配优先级，生成包括优先级被分配到的可用信道的可用信道列表，并向TVBD提供生成的可用信道列表; 以及被配置为存储为每个TVBD计算优先级被分配到的可用信道的数据库。

公开(公告)号：US20130176960A1

公开(公告)日：2013-07-11

申请号：US13734213

申请日：2013-01-04

Applicant: Electronics And Telecommunications Research Institute

Inventor： Antony A. FRANKLIN ,  Jin Suk PAK ,  Gwang Zeen KO ,  Sung Jin YOO ,  Byung Jang JEONG

IPC: H04W72/04

CPC classification number: H04W72/046 ,  H04W72/02 ,  H04W84/22

Abstract: A cognitive radio mesh node may include at least one directional antenna, at least one transceiver to transmit and receive data using the at least one directional antenna, and a processor to determine a channel for performing communication for a cognitive radio mesh network based on a geolocation database and to control the at least one transceiver based on the determined channel.

Abstract translation: 认知无线电网状节点可以包括至少一个定向天线，至少一个收发信机，用于使用至少一个定向天线发送和接收数据，以及处理器，用于基于地理位置来确定用于认知无线电网状网络的通信的信道 数据库，并且基于所确定的信道来控制所述至少一个收发器。

公开(公告)号：US20130155977A1

公开(公告)日：2013-06-20

申请号：US13718629

申请日：2012-12-18

Applicant: Electronics and Telecommunications Research Institute

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

IPC: H04W72/04

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.

Abstract translation: 提供了一种使用通过多层执行传输的多输入多输出（MIMO）天线系统的系统中的物理上行链路共享信道（PUSCH）区域发送控制信息的方法。 在采用通过多层进行传输的MIMO天线系统的系统中使用PUSCH区域发送信道质量指示符（CQI）/预编码矩阵指示符（PMI）的方法包括使用一个信道编码器对CQI / PMI进行编码 并且使用部分或全部层发送编码的CQI / PMI。 因此，可以通过使用多个层的PUSCH区域来发送上行链路控制信息。

公开(公告)号：US20250007664A1

公开(公告)日：2025-01-02

申请号：US18829230

申请日：2024-09-09

Applicant: Electronics and Telecommunications Research Institute

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

IPC: H04L5/00 ,  H04L27/26 ,  H04W72/21

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.

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：US20240097860A1

公开(公告)日：2024-03-21

申请号：US18384325

申请日：2023-10-26

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 ,  H04L1/00 ,  H04L1/1607 ,  H04L1/1829 ,  H04L1/1867 ,  H04W72/20

CPC classification number: H04L5/0055 ,  H04L1/0027 ,  H04L1/1614 ,  H04L1/1671 ,  H04L1/1854 ,  H04L1/1893 ,  H04L5/0001 ,  H04L5/001 ,  H04L5/0048 ,  H04L5/0094 ,  H04W72/20 ,  H04L1/0073 ,  H04L5/0023 ,  H04L5/0082 ,  H04W72/23

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：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.