公开(公告)号：US20080316104A1

公开(公告)日：2008-12-25

申请号：US12096780

申请日：2006-12-08

Applicant: Nak-Seon Seong ,  Choon-Sik Lim ,  Cheol-Sig Pyo ,  Jong-Suk Chae

Inventor： Nak-Seon Seong ,  Choon-Sik Lim ,  Cheol-Sig Pyo ,  Jong-Suk Chae

IPC: H04B7/24

CPC classification number: G01S5/10

Abstract: Provided is an apparatus and method for computing the location of a radio beacon by using received signal strength (RSS) and multiple frequencies. The apparatus and method of the present invention computes the location of a radio beacon without limitation in distance by using multiple frequencies and received signal strength to resolve the problem of phase ambiguity. A radio beacon location computing system includes a plurality of base stations configured to receive signals of multiple frequencies transmitted from the radio beacon, and detect and output phase differences and received signal strength; and a location computing server configured to receive the phase differences and the received signal strength outputted from the respective base stations, acquire calculation distances based on the phase differences, remove phase ambiguity from the calculation distances based on the received signal strength, and compute the location of the radio beacon.

Abstract translation: 提供了一种通过使用接收信号强度（RSS）和多个频率来计算无线电信标的位置的装置和方法。 本发明的装置和方法通过使用多个频率和接收信号强度来计算无线电信标的位置而不限制距离，以解决相位模糊问题。 无线电信标位置计算系统包括：多个基站，被配置为接收从无线电信标发送的多个频率的信号，并检测和输出相位差和接收信号强度; 以及位置计算服务器，被配置为接收从各个基站输出的相位差和接收信号强度，基于相位差获取计算距离，基于接收到的信号强度从计算距离中消除相位模糊度，并且计算位置 的无线电信标。

公开(公告)号：US20080232437A1

公开(公告)日：2008-09-25

申请号：US12064767

申请日：2006-08-24

Applicant: Il-Gyu Kim ,  Hyeong-Geun Park ,  Young-Hoon Kim ,  Seung-Chan Bang

Inventor： Il-Gyu Kim ,  Hyeong-Geun Park ,  Young-Hoon Kim ,  Seung-Chan Bang

IPC: H04B1/707

CPC classification number: H04B7/0678 ,  H04J13/10

Abstract: The present invention relates to a transmit diversity method of a mobile communication system and a base station transmitting apparatus using the same. A first code and a second code that is diversity-encoded from the first code are generated, and transmit symbols are spread with the first code and the second code. A first transmit symbol spread with the first code and a second transmit symbol spread with the second code are mapped to symbols in frequency and time domains in a frame and transmitted through antennas. Therefore, various diversity techniques can be provided to the mobile communication system, and the diversity technique is not restricted to symbols transmitted to the same mobile station and can also be applied to a 1-bit channel.

Abstract translation: 本发明涉及一种移动通信系统的发射分集方法及其使用的基站发送装置。 生成从第一代码分集编码的第一代码和第二代码，并且利用第一代码和第二代码扩展发送符号。 利用第一码扩展的第一发送符号和用第二码扩展的第二发送符号被映射到帧中的频域和时域中的符号，并通过天线发送。 因此，可以向移动通信系统提供各种分集技术，并且分集技术不限于发送到同一移动台的符号，并且也可以应用于1比特信道。

公开(公告)号：US20080232320A1

公开(公告)日：2008-09-25

申请号：US12063933

申请日：2006-08-17

Applicant: Hee-Soo Lee ,  Jae-Young Ahn ,  Kyung-Hi Chang ,  Joo Heo ,  In-Suk Cha

Inventor： Hee-Soo Lee ,  Jae-Young Ahn ,  Kyung-Hi Chang ,  Joo Heo ,  In-Suk Cha

IPC: H04Q7/00 ,  H04L27/28

CPC classification number: H04W16/10 ,  H04W28/22 ,  H04W72/0453

Abstract: Provided are a dynamic resource allocation method based on frequency reuse partitioning for an Orthogonal Frequency Division Multiple Access (OFDMA) system, and a frame transmission method therefor. The dynamic resource allocation method includes: a) dividing a coverage into cells based on frequency reuse partitioning; b) selecting a candidate user to receive a channel allocated thereto based on the ratio; c) acquiring distance information for the candidate user; and d) checking whether the candidate user is in an inner or outer cell area based on the distance information. If the candidate user is in the inner cell area, a subchannel group among subchannel groups having a Frequency Reuse Factor (FRF) lower than a threshold value is selected and subcarriers of the selected subchannel group is allocated. If the candidate user is in the outer cell area, a subchannel group among subchannel groups having a FRF higher than the threshold value is selected.

Abstract translation: 提供了一种基于正交频分多址（OFDMA）系统的频率复用分割的动态资源分配方法及其帧传输方法。 动态资源分配方法包括：a）基于频率重用分区将覆盖划分为小区; b）基于所述比率选择候选用户以接收分配给其的信道; c）获取候选用户的距离信息; 以及d）基于距离信息来检查候选用户是否在内部或外部小区区域。 如果候选用户在内部小区区域，则选择具有低于阈值的频率重用因子（FRF）的子信道组之中的子信道组，并且分配所选择的子信道组的子载波。 如果候选用户在外部小区区域，则选择FRF高于阈值的子信道组之中的子信道组。

公开(公告)号：US10320424B2

公开(公告)日：2019-06-11

申请号：US15842565

申请日：2017-12-14

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Sung-Ik Park ,  Sun-Hyoung Kwon ,  Jae-Young Lee ,  Heung-Mook Kim ,  Nam-Ho Hur

IPC: H04L1/00 ,  H03M13/27 ,  H03M13/11 ,  H03M13/25 ,  H03M13/00

Abstract: A bit interleaver, a bit-interleaved coded modulation (BICM) device and a bit interleaving method are disclosed herein. The bit interleaver includes a first memory, a processor, and a second memory. The first memory stores a low-density parity check (LDPC) codeword having a length of 64800 and a code rate of 2/15. The processor generates an interleaved codeword by interleaving the LDPC codeword on a bit group basis. The size of the bit group corresponds to a parallel factor of the LDPC codeword. The second memory provides the interleaved codeword to a modulator for 16-symbol mapping.

公开(公告)号：US20190037239A1

公开(公告)日：2019-01-31

申请号：US16151627

申请日：2018-10-04

Applicant: Electronics and Telecommunications Research Institute ,  UNIVERSITY-INDUSTRY COOPERATION GROUP OF KYUNG HEE UNIVERSITY

Inventor： Gun BANG ,  Won Sik CHEONG ,  Gi Mun UM ,  Nam Ho HUR ,  Gwang Hoon PARK ,  Kyung Yong KIM

IPC: H04N19/593 ,  H04N19/46 ,  H04N19/176 ,  H04N19/44 ,  H04N19/597 ,  H04N19/96 ,  H04N19/107

Abstract: Disclosed are an image encoding method using a skip mode and a device using the method. The image encoding method may comprise the steps of: judging whether there is residual block data of a prediction target block on the basis of predetermined data indicating whether residual block data has been encoded; and, if there is residual block data, restoring the prediction target block on the basis of the residual block data and an intra-screen predictive value of the prediction target block. Consequently, encoding and decoding efficiency can be increased by carrying out the encoding and decoding of screen residual data only for prediction target blocks where there is a need for a residual data block in accordance with screen similarity.

公开(公告)号：US20180328851A1

公开(公告)日：2018-11-15

申请号：US15705748

申请日：2017-09-15

Applicant: Electronics and Telecommunications Research Institute ,  Korea Advanced Institute of Science and Technology

Inventor： Won Kyoung LEE ,  Ki-Hun JEONG ,  Moonseong PARK

IPC: G01N21/65 ,  G01N21/64

CPC classification number: G01N21/658 ,  G01J3/433 ,  G01J3/44 ,  G01J2001/4242 ,  G01J2003/4424 ,  G01N21/274 ,  G01N21/6428 ,  G01N2201/06113 ,  G01N2201/067 ,  G01N2201/121

Abstract: Disclosed is an apparatus and method for processing a bio optical signal based on a spread spectrum scheme including a demodulator configured to collect a bio optical signal generated in response to an incident beam modulated based on a spreading code being scattered from a target analyte, and remove a noise from the bio optical signal by demodulating the bio optical signal based on the spreading code, wherein the bio optical signal has a correlation with the modulated incident beam.

公开(公告)号：US20180227928A1

公开(公告)日：2018-08-09

申请号：US15877129

申请日：2018-01-22

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITIUTE

Inventor： Eun Kyung KIM ,  Young Jo KO ,  Seok Ki KIM ,  Won Ik KIM ,  Seung Kwon BAEK

IPC: H04W72/08 ,  H04B7/08 ,  H04W72/04 ,  H04L5/00

CPC classification number: H04W72/085 ,  H04B7/04 ,  H04B7/0617 ,  H04B7/0695 ,  H04B7/088 ,  H04B7/12 ,  H04L5/0023 ,  H04L5/0048 ,  H04L5/005 ,  H04W16/28 ,  H04W72/048 ,  H04W72/082

Abstract: Disclosed are a communication method and a communication apparatus using multiple antennas in a wireless communication system. A communication method of a receiver comprises receiving reference signals from a transmitter of the communication system through beams to which the hybrid beamforming is applied; selecting at least one analog beam having a quality equal to or higher than a preset threshold value among analog beams belonging to the beams, based on the reference signals; and selecting at least one digital beam corresponding to the at least one analog beam and having a quality equal to or higher than the preset threshold value among digital beams belonging to the beams, based on the reference signals. Thus, performance of the communication system can be improved.

公开(公告)号：US20180136645A1

公开(公告)日：2018-05-17

申请号：US15609213

申请日：2017-05-31

Applicant: Electronics and Telecommunications Research Institute

Inventor： Tae Chul HONG ,  Hee Wook KIM ,  Kwang Jae LIM

IPC: G05D1/00 ,  G05D1/10 ,  H04N21/2347 ,  H04W28/02 ,  H04L29/06

CPC classification number: G05D1/0022 ,  B64C2201/02 ,  G08C17/00 ,  G08C17/02 ,  G08C2201/50 ,  H04N21/23476 ,  H04W72/0453 ,  H04W74/00

Abstract: A channel access method in an unmanned aerial vehicle (UAV) control and non-payload communication (CNPC) system is provided. The channel access method may include setting an uplink frequency and a downlink frequency to each of a ground station and an airborne radio station, and performing, by the ground station and the airborne radio station, an initial access using the uplink frequency or the downlink frequency.

公开(公告)号：US20180045856A1

公开(公告)日：2018-02-15

申请号：US15671922

申请日：2017-08-08

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION

Inventor： Sunghoon HONG ,  Heon LEE ,  Yong Suk YANG ,  In-Kyu YOU ,  Soo-Jung KIM ,  Hak-Jong CHOI

IPC: G02B1/00

CPC classification number: G02B1/007

Abstract: A metamaterial structure may include a first nanoparticle and a second nanoparticle containing a different material from the first nanoparticle. The first and second nanoparticles may be provided to be adjacent to each other and to be in an electrically-coupled state.

公开(公告)号：US20180027593A1

公开(公告)日：2018-01-25

申请号：US15654679

申请日：2017-07-19

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Changhee LEE

IPC: H04W74/08 ,  H04L5/00 ,  H04W74/00

CPC classification number: H04W74/0833 ,  H04L5/003 ,  H04W72/046 ,  H04W74/008 ,  H04W76/00

Abstract: A method, a terminal, and a base station for performing random access by receiving additional random access information from the base station after connecting to the base station, selecting a random access preamble based on the additional random access information, and performing the random access by using the selected random access preamble is provided.