公开(公告)号：US09246563B2

公开(公告)日：2016-01-26

申请号：US13504925

申请日：2010-10-30

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

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

IPC: H04W4/00 ,  H04B7/04 ,  H04L25/02

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：US09167476B2

公开(公告)日：2015-10-20

申请号：US13047477

申请日：2011-03-14

Applicant: Yun-Joo Kim ,  Sok-Kyu Lee

Inventor： Yun-Joo Kim ,  Sok-Kyu Lee

IPC: H04W4/00 ,  H04W28/06 ,  H04W4/06

CPC classification number: H04W72/005 ,  H04L45/74 ,  H04L69/22 ,  H04W4/06 ,  H04W28/06 ,  H04W72/0406

Abstract: A method for simultaneously transmitting packets having different lengths to two or more users in a wireless communication system includes: generating the packets to transmit to the respective users, the packets containing information on the maximum transmission length of the packets having different lengths; and simultaneously transmitting the generated packets to the respective users. The maximum transmission length is represented by the number of symbols, and each of the packets sequentially contains control information required for transmitting the packet, data, a tail field, and a PHY pad field, and is generated by inserting a MAC pad between the control information and the data such that the tail field and the PHY pad field are positioned at the last byte of the last symbol of the maximum transmission length.

Abstract translation: 一种用于在无线通信系统中同时向两个或多个用户发送具有不同长度的分组的方法包括：生成要发送给各个用户的分组，所述分组包含关于具有不同长度的分组的最大传输长度的信息; 同时将生成的分组发送给各个用户。 最大传输长度由符号数表示，并且每个分组顺序地包含用于发送分组所需的控制信息，数据，尾部字段和PHY填充字段，并且通过在控制器之间插入MAC垫来生成 信息和数据，使得尾部场和PHY垫场位于最大传输长度的最后一个符号的最后一个字节。

公开(公告)号：US09088873B2

公开(公告)日：2015-07-21

申请号：US13502997

申请日：2010-10-20

Applicant: Jeeyon Choi ,  Yun-Joo Kim ,  Sok-Kyu Lee

Inventor： Jeeyon Choi ,  Yun-Joo Kim ,  Sok-Kyu Lee

IPC: H04W4/08 ,  H04W8/18 ,  H04W8/26

CPC classification number: H04W4/08 ,  H04L61/2069 ,  H04W8/186 ,  H04W8/26 ,  H04W84/12

Abstract: The present invention relates to a method for allocating a group address in a wireless LAN, a method for transmitting a response request frame and a response frame to a plurality of terminals, and a data transmission method using the same group address. The method for allocating the group address of the present invention comprises the steps of: transmitting a group agreement request frame including the group address (identifier) to terminals as grouping targets; and receiving a response frame corresponding to the group agreement request frame. The group agreement request frame includes group address (identifier) information and a terminal address as a destination address and is transmitted to a receiving terminal as a destination.

Abstract translation: 本发明涉及一种用于在无线LAN中分配组地址的方法，用于向多个终端发送响应请求帧和响应帧的方法以及使用相同组地址的数据传输方法。 用于分配本发明的组地址的方法包括以下步骤：将包括组地址（标识符）的组协议请求帧发送到终端作为分组目标; 并接收对应于组协议请求帧的响应帧。 组协议请求帧包括组地址（标识符）信息和作为​​目的地地址的终端地址，并被发送到作为目的地的接收终端。

公开(公告)号：US08923261B2

公开(公告)日：2014-12-30

申请号：US13458993

申请日：2012-04-27

Applicant: Yu-Ro Lee ,  Jung-Bo Son ,  Sok-Kyu Lee

Inventor： Yu-Ro Lee ,  Jung-Bo Son ,  Sok-Kyu Lee

IPC: H04B15/00 ,  H04W84/12 ,  H04L1/00 ,  H04W48/08 ,  H04L5/00 ,  H04W28/22 ,  H04W28/06 ,  H04W28/04

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: 本发明涉及用于发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：通过每个终端中的信道估计来确定是否可以满足每个数据的所需传输速率 不同的数据同时发送到每个终端; 并且向每个终端发送数据帧，所述数据帧被构成为当不满足每个数据的所需传输速率时，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：US08873487B2

公开(公告)日：2014-10-28

申请号：US13391904

申请日：2010-08-24

Applicant: Yun-Joo Kim ,  Jong-Ee Oh ,  Sok-Kyu Lee

Inventor： Yun-Joo Kim ,  Jong-Ee Oh ,  Sok-Kyu Lee

IPC: H04W4/00 ,  H04L5/00 ,  H04W72/04 ,  H04W84/12

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

Abstract: The present invention relate to a wireless communication system; and, more particularly, to a communicating apparatus and method in a high rate wireless communication system.A transmitting method of data in accordance with an embodiment of the present invention, as a transmitting method of data in a high rate wireless communication system, includes: allocating one or more bands among two or more multi-bands to each of users; and simultaneously transmitting data through the allocated bands to two or more users by using the multiple antennas for the allocated respective bands.

Abstract translation: 无线通信系统技术领域本发明涉及一种无线通信系统， 更具体地，涉及一种高速率无线通信系统中的通信装置和方法。 作为高速率无线通信系统中的数据的发送方法的本发明的一个实施方式的发送数据的发送方法，包括：在两个以上的多个频带中分配一个以上的频带; 并且通过使用分配的各个频带的多个天线同时将数据通过所分配的频带发送到两个或多个用户。

公开(公告)号：US08861495B2

公开(公告)日：2014-10-14

申请号：US13511363

申请日：2010-11-24

Applicant: Yun-Joo Kim ,  Jae-Seung Lee ,  Sok-Kyu Lee

Inventor： Yun-Joo Kim ,  Jae-Seung Lee ,  Sok-Kyu Lee

IPC: H04W72/14 ,  H04B7/04 ,  H04W74/08

CPC classification number: H04B7/0452 ,  H04W74/0816

Abstract: The present invention relates to a method for protecting MU-MIMO (Multi User-Multiple Input Multiple Output) data through a multi-RTS/CTS frame exchange in a MU-MIMO based wireless communication system. The method of the present invention comprises: a process where an indicator for VHT data protection is added to an RTS frame, using the structure of an RTS/CTS frame for an existing legacy terminal during the multi RTS/CTS frame exchange; a process where an access point designates and then transmits the duration period of the RTS frame while transmitting the RTS frame; and a process where wireless terminals up to the (n−1)th terminal designate the duration period of the CTS frame as ‘0’ and send the designated duration period, while only the n-th wireless terminal designates NAV for data protection.

Abstract translation: 本发明涉及在基于MU-MIMO的无线通信系统中通过多RTS / CTS帧交换来保护MU-MIMO（多用户多输入多输出）数据的方法。 本发明的方法包括：在多RTS / CTS帧交换期间，使用RTS / CTS帧的结构为现有的传统终端，将用于VHT数据保护的指示符添加到RTS帧的过程; 其中接入点指定然后在发送RTS帧的同时发送RTS帧的持续时间段的过程; 以及直到第（n-1）个终端的无线终端将CTS帧的持续时间指定为“0”并发送指定的持续时间的过程，而仅第n个无线终端指定用于数据保护的NAV。

公开(公告)号：US08792603B2

公开(公告)日：2014-07-29

申请号：US13333707

申请日：2011-12-21

Applicant: Eun Young Choi ,  Hun Sik Kang ,  Sok Kyu Lee

Inventor： Eun Young Choi ,  Hun Sik Kang ,  Sok Kyu Lee

IPC: H04L7/00

CPC classification number: H04W56/00

Abstract: An apparatus for acquiring synchronization in a multi-channel system includes a signal reception unit for receiving information about repetition patterns of signal streams for each channel and receiving the signal streams and data from the channel, an estimated synchronization point tracking unit for determining a estimated synchronization point for the channel from a point of time where the repetition patterns are ended by tracking a period where the signal streams are repeated based on the repetition patterns, and a synchronization acquisition unit for searching, based on the estimated synchronization point related to the channel, for a point where the repetition of the signal stream is ended or a point where new signal streams are started and acquiring a synchronization point based on the point.

Abstract translation: 一种用于在多通道系统中获取同步的装置包括：信号接收单元，用于接收关于每个通道的信号流的重复模式的信息，并从信道接收信号流和数据;估计的同步点跟踪单元，用于确定估计的同步 通过基于重复模式跟踪信号流重复的周期，从重复模式结束的时间点开始通道的点，以及用于基于与该信道相关的估计同步点来搜索的同步获取单元， 用于信号流的重复结束的点或新信号流开始的点，并且基于该点获取同步点。

公开(公告)号：US08780737B2

公开(公告)日：2014-07-15

申请号：US13333656

申请日：2011-12-21

Applicant: Seung-Kwon Cho ,  Hun-Sik Kang ,  Sok-Kyu Lee

Inventor： Seung-Kwon Cho ,  Hun-Sik Kang ,  Sok-Kyu Lee

IPC: H04L12/26 ,  H04W74/08 ,  G06F11/07

CPC classification number: H04W74/0808 ,  G06F11/0751 ,  H04L1/243

Abstract: Disclosed is a loop-back apparatus in wireless communication systems, including: an MAC processing unit configured to transmit a user data and a control frame when a loop-back mode is established; a loop-back unit configured to generate a response frame of a receipt for the user data and the control message transmitted from the MAC processing unit and again feedbacks the generated response frame to the MAC processing unit.

Abstract translation: 公开了一种无线通信系统中的环回装置，包括：MAC处理单元，被配置为在建立环回模式时发送用户数据和控制帧; 循环单元，被配置为生成用于所述用户数据的接收的响应帧和从所述MAC处理单元发送的所述控制消息，并且将所生成的响应帧再次反馈给所述MAC处理单元。

公开(公告)号：US08718191B2

公开(公告)日：2014-05-06

申请号：US13033202

申请日：2011-02-23

Applicant: Il-Gu Lee ,  In-Kyeong Choi ,  Yu-Ro Lee ,  Jong-Ee Oh ,  Eun-Young Choi ,  Sok-Kyu Lee

Inventor： Il-Gu Lee ,  In-Kyeong Choi ,  Yu-Ro Lee ,  Jong-Ee Oh ,  Eun-Young Choi ,  Sok-Kyu Lee

IPC: H04L27/20

CPC classification number: H04L27/18 ,  H04L27/0008

Abstract: A method for transmitting, by a transmitting terminal, data to a receiving terminal in a wireless communication system includes: generating a first detection field including symbols modulated by using a BPSK data tone; generating a second detection field including symbols modulated such that an even numbered subcarrier and an odd numbered subcarrier have a phase difference of 90 degrees; generating a data packet including the first detection field, the second detection field, and the data; and transmitting the data packet.

Abstract translation: 一种在无线通信系统中由发送终端向接收终端发送数据的方法包括：生成包括通过使用BPSK数据音调调制的符号的第一检测字段; 产生包括被调制的符号的第二检测场，使得偶数副载波和奇数副载波具有90度的相位差; 生成包括第一检测区域，第二检测区域和数据的数据分组; 并发送数据包。

公开(公告)号：US08626079B2

公开(公告)日：2014-01-07

申请号：US12177605

申请日：2008-07-22

Applicant: Il-Gu Lee ,  Chanho Yoon ,  Eun-Young Choi ,  Hun-Sik Kang ,  Minho Cheong ,  Sok-Kyu Lee

Inventor： Il-Gu Lee ,  Chanho Yoon ,  Eun-Young Choi ,  Hun-Sik Kang ,  Minho Cheong ,  Sok-Kyu Lee

IPC: H04B1/00 ,  H04B7/00

CPC classification number: H04L1/0003 ,  H04B17/318

Abstract: Provided is a link adaptation method and apparatus in wireless communication system. The method, includes: amplifying a received signal; converting the amplified signal into a digital signal; calculating digital signal strength; and calculating the received signal strength based on the digital signal strength and a gain of said amplifying a received signal.

Abstract translation: 提供了一种无线通信系统中的链路适配方法和装置。 该方法包括：放大接收信号; 将放大的信号转换成数字信号; 计算数字信号强度; 以及基于所述数字信号强度和所述放大接收信号的增益来计算接收信号强度。