公开(公告)号：US08867462B2

公开(公告)日：2014-10-21

申请号：US13035105

申请日：2011-02-25

Applicant: Yu-Ro Lee ,  Sok-Kyu Lee

Inventor： Yu-Ro Lee ,  Sok-Kyu Lee

IPC: H04W4/00 ,  H04L25/02 ,  H04L5/00 ,  H04W24/00 ,  H04W28/06

CPC classification number: H04L5/0048 ,  H04L5/0023 ,  H04L25/0226 ,  H04L25/0228 ,  H04W24/00 ,  H04W28/06

Abstract: An apparatus of transmitting a long training field includes: a station number determination unit configured to determine at least one station to be transmitted using transmission data or channel status information; a transmission stream allocation unit configured to determine the number of transmission streams for each of the least one station determined by the station number determination unit; a long training field number calculation unit configured to calculate the number of long training fields required for each of the at least one station determined by the transmission stream allocation unit and determines the least common multiple of the number of calculated long training fields of each station; and a long training field allocation unit configured to allocate the long training fields for each station to subcarriers allocated to each station to correspond to the least common multiple of the determined long training fields.

Abstract translation: 发送长训练场的装置包括：站号确定单元，被配置为使用发送数据或信道状态信息确定要发送的至少一个站; 发送流分配单元，被配置为确定由所述站号确定单元确定的所述至少一个站中的每一个的传输流的数量; 长训练场号计算单元，被配置为计算由所述传输流分配单元确定的所述至少一个站中的每一个所需的长训练场的数量，并确定每个站的计算的长训练场数的最小公倍数; 以及长训练场分配单元，被配置为将每个站的长训练场分配给分配给每个站的子载波以对应于所确定的长训练场的最小公倍数。

公开(公告)号：US08681673B2

公开(公告)日：2014-03-25

申请号：US13081930

申请日：2011-04-07

Applicant: Yu-Ro Lee ,  Jong-Ee Oh ,  Sok-Kyu Lee ,  Hyun-Kyu Chung

Inventor： Yu-Ro Lee ,  Jong-Ee Oh ,  Sok-Kyu Lee ,  Hyun-Kyu Chung

IPC: H04W52/02

CPC classification number: H04W52/0203 ,  H04W52/0229 ,  Y02D70/142

Abstract: A method for reducing power consumption in a wireless communication system includes: generating a descramble initial value by using at least some bits of identification information of an STA, which is known to an AP or base station and the STA; generating a first descramble sequence by using the generated descramble initial value and comparing at least some bits of the generated first descramble sequence with at least some bits of a service field of a currently-received signal; as the comparison result, when it is determined that the destination of the currently-received signal is not set to the STA, stopping the signal reception; and as the comparison result, when it is determined that the destination of the currently-received signal is set to the STA, generating a second descramble sequence by using the descramble initial value and descrambling the currently-received signal.

Abstract translation: 一种用于降低无线通信系统中功耗的方法，包括：通过使用AP或基站和STA已知的STA的识别信息的至少一些比特来生成解扰初始值; 通过使用所生成的解扰初始值产生第一解扰序列，并将所生成的第一解扰序列的至少一些比特与当前接收信号的服务字段的至少一些比特进行比较; 作为比较结果，当确定当前接收的信号的目的地未被设置到STA时，停止信号接收; 并且作为比较结果，当确定当前接收的信号的目的地被设置为STA时，通过使用解扰初始值产生第二解扰序列并对当前接收到的信号进行解扰。

公开(公告)号：US08522088B2

公开(公告)日：2013-08-27

申请号：US13479170

申请日：2012-05-23

Applicant: Yun Joo Kim ,  Yu Ro Lee ,  Sok Kyu Lee

Inventor： Yun Joo Kim ,  Yu Ro Lee ,  Sok Kyu Lee

IPC: G06F11/07 ,  G06F11/36

CPC classification number: H04L1/0003 ,  H04L1/0009 ,  H04L1/1887

Abstract: A method for transmitting a data block in a wireless communication system and a transmitter are provided. The transmitter transmits the data block to a receiver and generates a retransmission block for the retransmission of the data block if it is determined that the transmission fails. The transmitter determines whether the channel access is performed according to a transmit time of the retransmission block.

Abstract translation: 提供了一种用于在无线通信系统和发射机中发送数据块的方法。 如果确定传输失败，则发射机将数据块发送到接收机并且生成用于重传数据块的重传块。 发射机根据重传块的发送时间确定是否进行信道接入。

公开(公告)号：USRE44284E1

公开(公告)日：2013-06-11

申请号：US12692373

申请日：2010-01-22

Applicant: Yu-Ro Lee ,  Dong-Seung Kwon

Inventor： Yu-Ro Lee ,  Dong-Seung Kwon

IPC: H04J3/06

CPC classification number: H04B1/7077 ,  H04B1/7083 ,  H04B2201/70702

Abstract: A cell search system for a mobile station in a time division duplex system includes: a primary synchronization code search module for searching primary synchronization codes and comparing frame values of the primary synchronization codes to determine a position of the maximum value; a correlation module for estimating a phase value and acquiring a first correlation value; a secondary synchronization code search module for generating determinative variables and storing them based on the position of the maximum value; a comparison and decision module for detecting a maximum value of the determinative variables, comparing it with the values stored in the secondary synchronization code search module to count matching values, and comparing the count value with a system value to decide whether slot synchronization and group acquisition is successful; and a base station determination module for determining a second correlation value between midamble codes and the received signals, and selecting a maximum value of it to determine a base station.

公开(公告)号：US20120320954A1

公开(公告)日：2012-12-20

申请号：US13444785

申请日：2012-04-11

Applicant: Jong Ee OH ,  Yu Ro LEE ,  Sok Kyu LEE

Inventor： Jong Ee OH ,  Yu Ro LEE ,  Sok Kyu LEE

IPC: H04B7/02 ,  H04B1/38

CPC classification number: H04L25/03203 ,  H04B7/0413 ,  H04L25/03891 ,  H04L2025/03426

Abstract: A method for detecting a multiple input multiple output (MIMO) signal in a wireless communication system is provided. The method includes: selecting from a first antenna each of the first candidate signal constellations in which a first path metric for at least one first survivor path is minimal; acquiring at least one second survivor path based on the first candidate signal constellations; updating a second survivor path so as to remove an effect on the second survivor path due to the first candidate signal constellations; selecting from a second antenna each of the second candidate signal constellations in which a second path metric for the at least one updated second survivor path is minimal; acquiring at least one final survivor path based on the second candidate signal constellations; and acquiring a transmitting symbol among the final survivor paths.

Abstract translation: 提供了一种用于在无线通信系统中检测多输入多输出（MIMO）信号的方法。 该方法包括：从第一天线中选择其中用于至少一个第一幸存路径的第一路径量度最小的第一候选信号星座; 基于所述第一候选信号星座获取至少一个第二幸存路径; 更新第二幸存者路径以便由于第一候选信号星座而消除对第二幸存者路径的影响; 从第二天线选择每个第二候选信号星座，其中用于所述至少一个更新的第二幸存路径的第二路径量度最小; 基于所述第二候选信号星座获取至少一个最终幸存路径; 并在最后的幸存者路径中获取发送符号。

公开(公告)号：US08107563B2

公开(公告)日：2012-01-31

申请号：US12177655

申请日：2008-07-22

Applicant: Chanho Yoon ,  Il-Gu Lee ,  Jung-Bo Son ,  Eun-Young Choi ,  Yu-Ro Lee ,  Sok-Kyu Lee

Inventor： Chanho Yoon ,  Il-Gu Lee ,  Jung-Bo Son ,  Eun-Young Choi ,  Yu-Ro Lee ,  Sok-Kyu Lee

IPC: H04L27/14

CPC classification number: H04B7/0851 ,  H04B7/0669 ,  H04L1/0048 ,  H04L1/0631 ,  H04L25/067 ,  H04L27/2601

Abstract: Provided are a receiving apparatus for a multiple input multiple output (MIMO) system and a method thereof. The receiving apparatus includes a QR decomposing unit for calculating a single (Q) matrix vector and an upper triangle (R) matrix vector for a receiving signal vector; a first symbol estimation unit for estimating predetermined symbols using the calculated Q matrix vector and R matrix vector; a log likelihood ratio (LLR) calculating unit for calculating log likelihood ratios of unit bits for the estimated symbols; an interference removing unit for receiving a decoded signal that is decided using the calculated log likelihood ratios and removing interference from the receiving signal vector; and a second symbol estimation unit for linearly estimating remaining symbols for the interference removed signal.

Abstract translation: 提供了一种用于多输入多输出（MIMO）系统的接收装置及其方法。 接收装置包括用于计算接收信号矢量的单（Q）矩阵向量和上三角（R）矩阵向量的QR分解单元; 第一符号估计单元，用于使用所计算的Q矩阵向量和R矩阵向量来估计预定符号; 对数似然比（LLR）计算单元，用于计算估计符号的单位比特的对数似然比; 干扰去除单元，用于接收使用所计算的对数似然比决定的解码信号，并从接收信号矢量中去除干扰; 以及用于线性估计用于干扰去除信号的剩余符号的第二符号估计单元。

公开(公告)号：US20100260246A1

公开(公告)日：2010-10-14

申请号：US12808179

申请日：2008-11-28

Applicant: Minho Cheong ,  Yu-Ro Lee ,  Jong-Ee Oh ,  Sok-Kyu Lee

Inventor： Minho Cheong ,  Yu-Ro Lee ,  Jong-Ee Oh ,  Sok-Kyu Lee

IPC: H04B1/38 ,  H04L27/00

CPC classification number: H04B1/40

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: 提供了一种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。 基带发射机对传输信号和接收信号执行MAC协议处理，并且通过在传输数据的物理层处理中将整个传输频带划分成n个频带来处理传输信号，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传输信号，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发射机调制从DIF发射机传送的每个信道信号，并通过m个天线发送调制信号。

公开(公告)号：US07761112B2

公开(公告)日：2010-07-20

申请号：US11653764

申请日：2007-01-16

Applicant: Yu-Ro Lee ,  Een-Kee Hong ,  Dong-Cheol Kim ,  Hyun-Joon Shin ,  Dong-Seung Kwon

Inventor： Yu-Ro Lee ,  Een-Kee Hong ,  Dong-Cheol Kim ,  Hyun-Joon Shin ,  Dong-Seung Kwon

IPC: H04B7/00 ,  H04B17/00

CPC classification number: H04W52/146 ,  H04L5/023 ,  H04L27/2626 ,  H04W52/10 ,  H04W52/225 ,  H04W52/243

Abstract: A power controlling device in a mobile communication system, and a method thereof. A base station calculates an average interference of N previous frames, and broadcasts the average interference to subscriber stations. The subscriber stations determine transmission power based on the average interference. Noise and Interference (NI) of frames within a section corresponding to a setting size is calculated (the frames may include a current frame) so an estimated interference is close to the interference generated in the frame in which the subscriber station actually transmits a signal. In addition, to more precisely estimate the NI, the NI of the current frame is compensated according to a value and is broadcast.

Abstract translation: 移动通信系统中的功率控制装置及其方法。 基站计算N个先前帧的平均干扰，并且向用户台广播平均干扰。 用户台根据平均干扰确定发射功率。 计算与设定大小相对应的部分内的帧的噪声和干扰（帧）可以包括当前帧），所以估计的干扰接近在用户站实际发送信号的帧中产生的干扰。 另外，为了更准确地估计NI，当前帧的NI根据值进行补偿并被广播。

公开(公告)号：US20100162074A1

公开(公告)日：2010-06-24

申请号：US12642463

申请日：2009-12-18

Applicant: Jong-Ee OH ,  Minho CHEONG ,  Yu-Ro LEE ,  Sok-Kyu LEE ,  Yongho LEE

Inventor： Jong-Ee OH ,  Minho CHEONG ,  Yu-Ro LEE ,  Sok-Kyu LEE ,  Yongho LEE

IPC: H03M13/05 ,  G06F11/10

CPC classification number: H03M13/116 ,  H03M13/6527 ,  H03M13/6544 ,  H04L1/0041 ,  H04L1/0057

Abstract: A high-speed quasi-cyclic low density parity check (QC-LDPC) coding apparatus for coding inputted information into a generator matrix having a dual diagonal matrix format includes: a parity bit generation unit configured to generate an arbitrary parity bit; a temporary parity bit generation unit configured to constitute the inputted information with circulants, and shift and combine the respective circulants at each row to generate a temporary parity bit; a corrected bit generation unit configured to generate corrected bits of parity bits by using an output of the temporary parity bit generation unit; and a parity bit correction unit configured to correct the temporary parity bit by reflecting an output of the corrected bit generation unit to the output of the temporary parity bit generation unit.

Abstract translation: 用于将输入的信息编码成具有双对角矩阵格式的生成矩阵的高速准循环低密度奇偶校验（QC-LDPC）编码装置包括：奇偶校验位生成单元，被配置为生成任意奇偶校验位; 临时奇偶校验位生成单元，被配置为构成具有循环的输入信息，并且移位并组合各行的各个循环以产生临时奇偶校验位; 校正位生成单元，其通过使用所述临时奇偶校验位生成单元的输出来生成校正位的校验位; 以及奇偶校验位校正单元，被配置为通过将校正的位生成单元的输出反映到临时奇偶校验位产生单元的输出来校正临时奇偶校验位。

公开(公告)号：US20100142468A1

公开(公告)日：2010-06-10

申请号：US12634297

申请日：2009-12-09

Applicant: Minho CHEONG ,  Jong-Ee Oh ,  Yu-Ro Lee ,  Sok-Kyu Lee

Inventor： Minho CHEONG ,  Jong-Ee Oh ,  Yu-Ro Lee ,  Sok-Kyu Lee

IPC: H04W72/04

CPC classification number: H04W72/10 ,  H04W74/0808

Abstract: An apparatus and method for supporting access are provided. The method for supporting access in a wireless communication system includes: checking a plurality of stations (STA) which are to get access in a network and a plurality of access nodes of the respective STAs; determining the access priorities of the checked STAs and the priorities of the access nodes of the respective STAs; dividing a wireless resource and channel available in the network into multiple wireless resources and channels; and connecting the access nodes of the respective STAs to the multiple wireless resources and channels using a multi-channel media access control (MAC) protocol.

Abstract translation: 提供一种用于支持访问的装置和方法。 用于在无线通信系统中支持接入的方法包括：检查要在网络中访问的多个站（STA）和相应STA的多个接入节点; 确定所检查的STA的接入优先级和相应STA的接入节点的优先级; 将网络中可用的无线资源和信道划分为多个无线资源和信道; 以及使用多信道媒体访问控制（MAC）协议将各个STA的接入节点连接到多个无线资源和信道。