公开(公告)号：WO2004056022A3

公开(公告)日：2005-05-06

申请号：PCT/KR0301083

申请日：2003-06-02

Applicant: KOREA ELECTRONICS TELECOMM ,  LEE SOK-KYU ,  KIM KWANG-SOON ,  CHANG KYUNG-HI

Inventor： LEE SOK-KYU ,  KIM KWANG-SOON ,  CHANG KYUNG-HI

IPC: H04J11/00 ,  H04B7/06 ,  H04J20060101 ,  H04L1/06 ,  H04L5/02 ,  H04L5/06 ,  H04L27/26 ,  H04W16/02 ,  H04W16/28 ,  H04W72/04 ,  H04Q7/38

CPC classification number: H04J11/0026 ,  H04L1/0618 ,  H04L5/0023 ,  H04L5/0046 ,  H04L5/0048 ,  H04L5/005 ,  H04L5/006 ,  H04L5/0085 ,  H04L5/06 ,  H04L25/0204 ,  H04L25/0226 ,  H04L27/2602

Abstract: Disclosed are an adaptive pilot symbol assignment method that flexibly controls the number of transmit antennas according to each user's moving speed, channel status, or user request, and assigns proper pilot symbols in the downlink of an OFDMA (Orthogonal Frequency Division Multiplexing Access) based cellular system; and a sub-carrier allocation method for high-speed mobile that allocates some sub-carriers to assign proper pilot symbols for ultrahigh-speed mobile users, and the rest of the sub-carriers to the other users to assign proper pilot symbols to the users, on the assumption that the ultrahigh-speed mobile users have a traffic volume almost insignificant to the whole traffic volume.

Abstract translation: 公开了一种根据每个用户的移动速度，信道状态或用户请求灵活控制发射天线数量的自适应导频符号分配方法，并且在基于OFDMA（正交频分复用接入）的蜂窝小区的下行链路中分配适当的导频符号 系统; 以及用于高速移动的子载波分配方法，其分配一些子载波以为超高速移动用户分配适当的导频符号，并且将剩余的子载波分配给其他用户以向用户分配适当的导频符号 假设超高速移动用户的流量对整个流量几乎无关紧要。

公开(公告)号：WO2011053069A3

公开(公告)日：2011-10-20

申请号：PCT/KR2010007573

申请日：2010-10-30

Applicant: KOREA ELECTRONICS TELECOMM ,  LEE YU-RO ,  OH JONG-EE ,  LEE SOK-KYU

Inventor： LEE YU-RO ,  OH JONG-EE ,  LEE SOK-KYU

IPC: H04B7/02 ,  H04L27/10

CPC classification number: H04B7/0452 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0015 ,  H04L1/08 ,  H04L25/0204

Abstract: The present invention particularly relates to a method and an apparatus for improving the efficiency of data transmission in a multi-user wireless transmission system. According to one embodiment of the present invention, the method, which is a transmission method of data in a multi-user wireless communication system, comprises the steps of: estimating channel states of each terminal through sounding or feedback information received from the terminals, and selecting terminals to which individual data are to be transmitted at the same time; determining a signal to noise ratio of the selected terminals, and calculating a precoding matrix; calculating a modulation and coding scheme (MCS) of each terminal and the number of symbols of data fields in accordance with the MCS of each terminal; dividing an area according to the number of terminals to which the data fields are to be simultaneously transmitted, if there are two or more selected terminals; and recalculating a reception signal to interference and noise ratio (SINR) for each area of each terminal, configuring a packet by resetting the MCS according to the recalculated SINR, and transmitting the configured packet.

Abstract translation: 本发明特别涉及一种用于提高多用户无线传输系统中的数据传输效率的方法和装置。 根据本发明的一个实施例，作为多用户无线通信系统中的数据的传输方法的方法包括以下步骤：通过从终端接收的探测或反馈信息来估计每个终端的信道状态，以及 选择要同时发送单个数据的终端; 确定所选终端的信噪比，并计算预编码矩阵; 根据每个终端的MCS计算每个终端的调制和编码方案（MCS）和数据字段的符号数; 如果存在两个或更多个所选择的终端，则根据要同时发送数据字段的终端数量划分一个区域; 并重新计算每个终端的每个区域的接收信号与干扰和噪声比（SINR），通过根据重新计算的SINR重新设置MCS来配置分组，并发送配置的分组。

公开(公告)号：WO2011053070A3

公开(公告)日：2011-09-01

申请号：PCT/KR2010007574

申请日：2010-10-30

Applicant: KOREA ELECTRONICS TELECOMM ,  LEE YU-RO ,  SON JUNG-BO ,  LEE SOK-KYU

Inventor： LEE YU-RO ,  SON JUNG-BO ,  LEE SOK-KYU

IPC: H04W28/06 ,  H04B7/04

CPC classification number: H04W72/0406 ,  H04B7/0452 ,  H04L1/007 ,  H04L1/0072 ,  H04L1/0606 ,  H04L1/0612 ,  H04L5/0023 ,  H04L5/0053 ,  H04L5/0073 ,  H04W28/04 ,  H04W28/06 ,  H04W28/22 ,  H04W48/08 ,  H04W80/04 ,  H04W84/12

Abstract: The present invention relates to a method and an apparatus for transmitting control and training symbols to improve transmission efficiency in a multi-user wireless communication system. The method for transmitting the control and training symbols in the multi-user wireless communication system according to one embodiment of the present invention comprises the steps of: determining whether a required transmission rate of each data can be satisfied through channel estimation in each of terminals when different data are simultaneously transmitted to each of the terminals; and transmitting a data frame to each of the terminals, the data frame being composed to discriminate the control and training symbols in each of the terminals using a combination of time, frequency, and code area when the required transmission rate of each data is not satisfied according to the determined result.

Abstract translation: 本发明涉及用于传送控制和训练符号以提高多用户无线通信系统中的传输效率的方法和装置。 根据本发明的一个实施例的用于在多用户无线通信系统中发送控制和训练符号的方法包括以下步骤：当在每个终端中通过信道估计来确定是否能够满足每个数据的所需传输速率时 不同的数据被同时发送到每个终端; 以及向每个终端发送一个数据帧，当不满足每个数据的所需传输速率时，该数据帧被组合以使用时间，频率和代码区域的组合来区分每个终端中的控制和训练符号 根据确定的结果。

公开(公告)号：WO2011025201A3

公开(公告)日：2011-07-21

申请号：PCT/KR2010005607

申请日：2010-08-24

Applicant: KOREA ELECTRONICS TELECOMM ,  KIM YUN-JOO ,  OH JONG-EE ,  LEE SOK-KYU

Inventor： KIM YUN-JOO ,  OH JONG-EE ,  LEE SOK-KYU

IPC: H04B7/04 ,  H04W72/04

CPC classification number: H04W72/046 ,  H04L5/0037 ,  H04W84/12

Abstract: The present invention relates to a data communications device and method in a wireless communication system, and more particularly to a data communications device and method in a high-capacity wireless communication system. A data-sending method according to one embodiment of the present invention is a data-sending method in a high-capacity wireless communication system, comprising the processes of: allocating to each user at least one channel from among two or more multi-channels; and sending data through the allocated channel(s) simultaneously to two or more users, each of the allocated channels simultaneously by using multiple antenna technology.

Abstract translation: 本发明涉及无线通信系统中的数据通信设备和方法，更具体地说，涉及一种大容量无线通信系统中的数据通信设备和方法。 根据本发明的一个实施例的数据发送方法是大容量无线通信系统中的数据发送方法，包括以下处理：从两个或更多个多信道中向每个用户分配至少一个信道; 并且通过使用多个天线技术同时向两个或更多个用户发送所分配的信道中的每个分配的频道，通过所分配的频道发送数据。

公开(公告)号：WO2011065750A2

公开(公告)日：2011-06-03

申请号：PCT/KR2010008362

申请日：2010-11-24

Applicant: KOREA ELECTRONICS TELECOMM ,  KIM YUN-JOO ,  CHOI JEEYON ,  LEE SOK-KYU

Inventor： KIM YUN-JOO ,  CHOI JEEYON ,  LEE SOK-KYU

IPC: H04B7/04

CPC classification number: H04W72/0413 ,  H04L1/1854 ,  H04W28/04 ,  H04W72/0446 ,  H04W74/002 ,  H04W74/004 ,  H04W74/006 ,  H04W84/12

Abstract: The present invention relates to a method for efficient transmission of a request frame such as an RTS/CTS frame and a response frame in response to the request frame in a multi-user based wireless communication system. The method of the present invention comprises: a process where wireless terminals transmit a response frame at their own response frame transmission time through a request frame that contains information about a plurality of wireless terminals and information about the response frame transmission time of the respective wireless terminals; a process where the respective wireless terminals transmit a response frame according to a token scheme such that the response frame is transmitted to a final access point; and a process where only a representative wireless terminal selected depending on a given wireless environment receives the response frame.

Abstract translation: 本发明涉及一种用于在基于多用户的无线通信系统中响应于该请求帧而有效地传输诸如RTS / CTS帧和响应帧的请求帧的方法。 本发明的方法包括：无线终端通过包含关于多个无线终端的信息的请求帧在其自己的响应帧传输时间发送响应帧的过程和关于各个无线终端的响应帧传输时间的信息 ; 其中各个无线终端根据令牌方案发送响应帧，使得响应帧被发送到最终接入点; 以及仅根据给定无线环境选择的代表性无线终端接收到响应帧的处理。

公开(公告)号：WO2009078599A2

公开(公告)日：2009-06-25

申请号：PCT/KR2008007064

申请日：2008-11-28

Applicant: KOREA ELECTRONICS TELECOMM ,  CHEONG MINHO ,  LEE YU-RO ,  OH JONG-EE ,  LEE SOK-KYU

Inventor： CHEONG MINHO ,  LEE YU-RO ,  OH JONG-EE ,  LEE SOK-KYU

IPC: H04B7/02 ,  H04B1/04 ,  H04B1/06

CPC classification number: H04L27/2626 ,  H04L27/2647

Abstract: Provided is a transmitter and a receiver for a high-throughput wireless communication system. The transmitter includes a baseband transmitter, a DIF transmitter, and a RF transmitter. The baseband transmitter performs a MAC protocol process on transmission signals and reception signals and processes the transmission signals by dividing an entire transmission band into n bands in a physical layer process of the transmission data, where n is a natural number. The DIF transmitter combines transmission signals of each band from the baseband transmitter and outputs m channel signals corresponding to a number of transmission antennas, where m is a natural number. The RF transmitter modulates each of the channel signals transferred from the DIF transmitter and transmits the modulated signals through m antennas.

Abstract translation: 提供了用于高吞吐量无线通信系统的发射机和接收机。 发射机包括基带发射机，DIF发射机和RF发射机。 基带发射机对发射信号和接收信号执行MAC协议处理，并且通过在发射数据的物理层处理中将整个发射频带划分为n个频带来处理发射信号，其中n是自然数。 DIF发射机组合来自基带发射机的每个频带的发射信号，并输出对应于多个发射天线的m个信道信号，其中m是自然数。 RF发射机对从DIF发射机传输的每个信道信号进行调制，并通过m个天线发射调制信号。

公开(公告)号：ES2439548T3

公开(公告)日：2014-01-23

申请号：ES11162017

申请日：2005-02-11

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： YU HEE-JUNG ,  JEON TAEHYUN ,  KIM MYUNG-SOON ,  CHOI EUN-YOUNG ,  LEE SOK-KYU ,  LYU DEUK-SU

IPC: H04J99/00 ,  H04L27/26 ,  H04L1/00 ,  H04L1/06 ,  H04L5/00

Abstract: Un aparato para generar y transmitir una trama en un sistema de comunicación inalámbrica, comprendiendo el aparato: un generador (2311, ..., 231M) de tramas configurado para generar una trama que comprende: un preámbulo corto que comprende un símbolo para sincronización de tiempo, unos preámbulos largos primero y segundo subsiguientes al preámbulo corto, en el que los preámbulos largos primero y segundo están generados usando una secuencia larga básica, un campo de datos subsiguiente a los preámbulos largos primero y segundo, en el que el segundo preámbulo largo proporciona una referencia para que un receptor realice una estimación de canal que permita al receptor demodular el campo de datos, y un símbolo de señal entre el primer preámbulo largo y el segundo preámbulo largo, en el que el símbolo de señal comprende información sobre velocidad de codificación, y modulación; y un transmisor (2111, ..., 211M) configurado para transmitir la trama al receptor, en el que la secuencia larga básica comprende, como sus elementos, {1, 1, -1, -1, 1, 1, -1, 1, -1, 1, 1, 1, 1, 1, 1, -1, -1, 1, 1, -1, 1, -1, 1, 1, 1, 1, 0, 1, -1, -1, 1, 1, -1, 1, -1, 1, -1, -1, -1, -1, -1, 1, 1, -1, -1, 1, -1, 1, -1, 1, 1, 1, 1} caracterizado porque el símbolo de señal incluye información sobre codificación espacio-temporal por bloques, y el primer preámbulo largo está precedido por un intervalo de guardia que tiene una longitud de 1,6 μs, el segundo preámbulo largo incluye dos preámbulos largos T1, T2 donde cada uno de los dos preámbulos 30 largos T1, T2 está precedido respectivamente por un intervalo de guardia que tiene una longitud de 0,8 μs, y el símbolo de datos está precedido por un intervalo de guardia que tiene una longitud de 0,8 μs.

公开(公告)号：ES2439461T3

公开(公告)日：2014-01-23

申请号：ES08100778

申请日：2005-02-11

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： YU HEE-JUNG ,  JEON TAEHYUN ,  KIM MYUNG-SOON ,  CHOI EUN-YOUNG ,  LEE SOK-KYU ,  LYU DEUK-SU

IPC: H04J99/00 ,  H04L27/26 ,  H04L1/00 ,  H04L1/06 ,  H04L5/00

Abstract: Un método para un transmisor que tiene múltiples antenas para generar una trama para transmitir datos, comprendiendo el método: generar un preámbulo corto (S160) que incluye información de sincronización; generar dos o más preámbulos largos (S160) situados subsiguientes al preámbulo corto; generar un símbolo de datos situado subsiguiente a los preámbulos largos; y generar un símbolo de señal (S161) situado entre un primer preámbulo largo y un segundo preámbulo largo, en el que el símbolo de señal incluye información sobre velocidad de codificación, y modulación, en el que los dos o más preámbulos largos incluyen información de estimación de canal que es necesaria para que un receptor demodule el símbolo de datos, caracterizado porque los datos se dividen y se introducen en dos o más codificadores de convolución, y se codifican por los codificadores (2031, ... , 203L) de convolución, el símbolo de señal incluye información sobre codificación espacio-temporal por bloques, y el primer preámbulo largo está precedido por un intervalo de guardia que tiene una longitud de 1,6 μl segundo preámbulo largo incluye dos preámbulos largos T1, T2 donde cada uno de los dos preámbulos largos T1, T2 está precedido respectivamente por un intervalo de guardia que tiene una longitud de 0,8 μ el símbolo de datos está precedido por un intervalo de guardia que tiene una longitud de 0,8 μ

公开(公告)号：DE60324184D1

公开(公告)日：2008-11-27

申请号：DE60324184

申请日：2003-06-02

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： LEE SOK-KYU ,  KIM KWANG-SOON ,  CHANG KYUNG-HI

IPC: H04B7/06 ,  H04J11/00 ,  H04J20060101 ,  H04L1/06 ,  H04L5/02 ,  H04L5/06 ,  H04L27/26 ,  H04W16/02 ,  H04W16/28 ,  H04W72/04

Abstract: Disclosed are an adaptive pilot symbol assignment method that flexibly controls the number of transmit antennas according to each user's moving speed, channel status, or user request, and assigns proper pilot symbols in the downlink of an OFDMA (Orthogonal Frequency Division Multiplexing Access) based cellular system; and a sub-carrier allocation method for high-speed mobile that allocates some sub-carriers to assign proper pilot symbols for ultrahigh-speed mobile users, and the rest of the sub-carriers to the other users to assign proper pilot symbols to the users, on the assumption that the ultrahigh-speed mobile users have a traffic volume almost insignificant to the whole traffic volume.

公开(公告)号：AU2005319950A1

公开(公告)日：2006-06-29

申请号：AU2005319950

申请日：2005-02-11

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： KIM MYUNG-SOON ,  LEE SOK-KYU ,  YU HEE-JUNG ,  LYU DEUK-SU ,  CHOI EUN-YOUNG ,  JEON TAEHYUN

IPC: H04J99/00 ,  H04L27/26

Abstract: In the present invention, data generated from a source unit are distributed to at least one bandwidth; the data distributed to the respective bandwidths are encoded in order to perform an error correction; the encoded data are distributed to at least one antenna; a subcarrier is allocated to the data distributed to the respective antennas, and an inverse Fourier transform is performed; a short preamble and a first long preamble corresponding to the subcarrier are generated; a signal symbol is generated according to a data transmit mode; and a frame is generated by adding a second long preamble between the signal symbol and a data field for the purpose of estimating a channel of a subcarrier which is not used.