公开(公告)号：US09288090B2

公开(公告)日：2016-03-15

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：US09191964B2

公开(公告)日：2015-11-17

申请号：US13928315

申请日：2013-06-26

Applicant: Electronics and Telecommunications Research Institute

Inventor： Dong Hun Lee ,  Hyun Duk Kang ,  Byung Jang Jeong

IPC: H04W72/00 ,  H04W72/10 ,  H04W72/12 ,  H04L27/00 ,  H04W16/14 ,  H04L5/00

CPC classification number: H04W72/10 ,  H04L5/0007 ,  H04L5/0033 ,  H04L5/0044 ,  H04L5/0064 ,  H04L5/0066 ,  H04L27/0006 ,  H04W16/14 ,  H04W72/00 ,  H04W72/12

Abstract: Disclosed is a method for improving the efficiency of sharing a frequency between a plurality of adjacent systems using an idle band. A method for allocating an operating channel priority between frequency sharing systems according to the present invention includes: a coarse channel priority allocating operation of collecting information about a target white space object (WSO) for priority allocation of an operating channel and information about the operating channel, and classifying the operating channel based on a predetermined criterion; and a fine channel priority allocating operation of removing the operating channel by checking an interference level of the classified operating channel.

Abstract translation: 公开了一种用于提高使用空闲频带在多个相邻系统之间共享频率的效率的方法。 根据本发明的用于在频率共享系统之间分配操作信道优先级的方法包括：收集关于用于操作信道的优先级分配的目标空白物体（WSO）的信息的粗信道优先级分配操作和关于操作信道的信息 并且基于预定标准对所述操作信道进行分类; 以及通过检查分类的操作信道的干扰等级来移除操作信道的精细信道优先级分配操作。

公开(公告)号：US09025684B2

公开(公告)日：2015-05-05

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：US09002353B2

公开(公告)日：2015-04-07

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，被配置为向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：US20150072700A1

公开(公告)日：2015-03-12

申请号：US14394416

申请日：2013-04-16

Applicant: Electronics and Telecommunications Research Institute

Inventor： Sung Hyun Hwang ,  Byung Jang Jeong ,  Gwang Zeen Ko ,  Frangklin A. Antony

IPC: H04W72/04 ,  H04W4/06

CPC classification number: H04W4/06 ,  H04W72/048 ,  Y02D70/20

Abstract: Provided is an apparatus and method for managing a backup channel for cognitive radio communication that may group at least one device included in a cell served by a base station, and allocate backup channels for cognitive radio communication to the groups, based on location information and mobility of the groups.

Abstract translation: 提供了一种用于管理认知无线电通信的备用信道的装置和方法，其可以对由基站服务的小区中包括的至少一个设备进行分组，并且基于位置信息和移动性向组分配用于认知无线电通信的备用信道 的团体。

公开(公告)号：US08879672B2

公开(公告)日：2014-11-04

申请号：US13777121

申请日：2013-02-26

Applicant: Electronics and Telecommunications Research Institute

Inventor： Hoi Yoon Jung ,  Sun Min Lim ,  Jae Hyun Park ,  Byung Jang Jeong

IPC: H04L27/06 ,  H03M7/46

CPC classification number: H03M7/46 ,  H03M7/3062

Abstract: Disclosed are a signal compression apparatus and method for dynamic compressive sensing, including: a signal input unit configured to simultaneously output an input signal, and generate and output a linear measurement reference signal based on the input signal; a linear transform unit configured to receive the linear measurement reference signal and variably generate a linear measurement matrix value according to the linear measurement reference signal; a signal compressor configured to output a compressed signal for the input signal based on the generated linear measurement matrix value; and a signal processor configured to reconstruct the compressed signal and perform spectrum sensing of the input signal. Accordingly, it is possible to increase signal compression efficiency of compressive sensing and improve signal reconstruction performance by using sparsity information of the input signal, and also by performing signal compression by using a compression matrix suitable for the sparsity information of the input signal.

Abstract translation: 公开了一种用于动态压缩感测的信号压缩装置和方法，包括：信号输入单元，被配置为同时输出输入信号，并且基于输入信号生成并输出线性测量参考信号; 线性变换单元，被配置为接收线性测量参考信号，并根据线性测量参考信号可变地生成线性测量矩阵值; 信号压缩器，被配置为基于所生成的线性测量矩阵值输出用于输入信号的压缩信号; 以及信号处理器，被配置为重构所述压缩信号并执行所述输入信号的频谱感测。 因此，可以通过使用输入信号的稀疏信息来提高压缩感测的信号压缩效率并且通过使用适合于输入信号的稀疏信息的压缩矩阵来执行信号压缩来提高压缩感测的信号压缩效率。