公开(公告)号：US20100037119A1

公开(公告)日：2010-02-11

申请号：US12517455

申请日：2007-12-05

申请人： Jong-Ee Oh ,  Yu-Ro Lee ,  Chanho Yoon ,  Minho Cheong ,  Sok-Kyu Lee ,  Yoo-Seung Song ,  Younggyun Kim

发明人： Jong-Ee Oh ,  Yu-Ro Lee ,  Chanho Yoon ,  Minho Cheong ,  Sok-Kyu Lee ,  Yoo-Seung Song ,  Younggyun Kim

IPC分类号： H03M13/05 ,  G06F11/10

CPC分类号： H03M13/1122 ,  H03M13/1117 ,  H03M13/112 ,  H03M13/6527 ,  H03M13/6544 ,  H03M13/6577 ,  H03M13/658 ,  H03M13/6583

摘要： An apparatus and method for updating a check node of a low-density parity check (LDPC) code in order to decode the LDPC code are provided. The method includes the operations of: (a) obtaining a first bit of a first minimum value among input values, the number of input values being equal to the number of degrees of the check node, by performing an AND operation on first bits of the input values, the first bits being most significant bits of the input values; (b) obtaining result values by switching and sequentially performing an XOR operation and an OR operation on the first bit of the first minimum value and each of the first bits of the input values; and (c) performing operations (a) and (b) on the result values set as input values and performing operations (a) and (b) a number of times corresponding to the number of bits of each input value, that is, repeating until last bits are set as input values, to thereby obtain the first minimum value, the last bits being least significant bits of the input values. Accordingly, the complexity of hardware is reduced, and super high-speed processing is possible.

摘要翻译： 提供了一种用于更新低密度奇偶校验（LDPC）码的校验节点以便解码LDPC码的装置和方法。 该方法包括以下操作：（a）通过对所述校验节点的第一比特执行“与”运算，获得输入值中的第一最小值的第一比特，输入值的数目等于校验节点的度数。 输入值，第一位是输入值的最高有效位; （b）通过对所述第一最小值的所述第一位和所述输入值的所述第一位中的每一个进行切换和顺序执行异或运算和或运算来获得结果值; 和（c）对设置为输入值的结果值执行操作（a）和（b），并且执行操作（a）和（b）与每个输入值的位数相对应的次数，即重复 直到最后的位被设置为输入值为止，从而获得第一最小值，最后的位是输入值的最低有效位。 因此，硬件的复杂度降低，超高速处理成为可能。

公开(公告)号：US20100031116A1

公开(公告)日：2010-02-04

申请号：US12443688

申请日：2007-10-01

申请人： Chan-Ho Yoon ,  Jong-Ee Oh ,  Min-Ho Cheong ,  Yu-Ro Lee ,  Sok-Kyu Lee ,  Hee-Jung Yu ,  Seung-Chan Bang

发明人： Chan-Ho Yoon ,  Jong-Ee Oh ,  Min-Ho Cheong ,  Yu-Ro Lee ,  Sok-Kyu Lee ,  Hee-Jung Yu ,  Seung-Chan Bang

IPC分类号： H03M13/05 ,  G06F11/10

CPC分类号： H03M13/116 ,  H03M13/1185 ,  H03M13/1188

摘要： There is provided to a method for encoding an LDPC (Low Density Parity Check) code using the result of checking a previously specified parity, including the steps of: forming a parity bit check matrix having a dual diagonal structure consisting of (N-K) rows for check nodes and (N-K) columns on the basis of the H matrix; calculating the values of all the parity bits by inserting a given binary value in sub-blocks, with the parity bit check matrix formed on the H matrix; if the values of the parity bits are incorrect, checking the parity bit corresponding to the sub-block located in the last part of the H matrix; searching the parity bit parts where the parity bit check result is represented as “1”; performing an XOR operation in sub-blocks on the parity bit part obtained through a simultaneous equation between the parity bits of the searched parity bit parts and the parity bit parts; and determining the value of the parity bit satisfying the condition that the value obtained by multiplying the H matrix by a code word vector.

摘要翻译： 提供了一种使用检查先前指定的奇偶校验的结果来编码LDPC（低密度奇偶校验）码的方法，包括以下步骤：形成具有由（NK）行组成的双对角线结构的奇偶校验位校验矩阵，用于 基于H矩阵检查节点和（NK）列; 通过在H块中形成奇偶校验位校验矩阵，在子块中插入给定的二进制值来计算所有奇偶校验位的值; 如果奇偶校验位的值不正确，则检查与位于H矩阵的最后部分中的子块相对应的奇偶校验位; 搜索奇偶校验位检查结果被表示为“1”的奇偶校验位部分; 在通过搜索到的奇偶校验位部分的奇偶校验位与奇偶校验位部分之间的联立方程获得的奇偶校验位部分的子块中执行异或运算; 以及确定所述奇偶校验位的值满足将所述H矩阵乘以码字矢量而获得的值的条件。

公开(公告)号：US07266164B2

公开(公告)日：2007-09-04

申请号：US10855698

申请日：2004-05-26

申请人： Taehyun Jeon ,  Sok-Kyu Lee

发明人： Taehyun Jeon ,  Sok-Kyu Lee

IPC分类号： H03D1/00

CPC分类号： H04L7/041

摘要： The present invention is directed to an apparatus for symbol timing detection for a wireless communication system. According to the present invention, the samples of the output of an analog-to-digital converter are utilized prior to the completion of the automatic gain control function to detect symbol timing using autocorrelations of the samples, and a structure supporting an average window size and a delay value is provided to optimize the complexity and allow a signal demodulation of high reliability.

摘要翻译： 本发明涉及一种用于无线通信系统的符号定时检测装置。 根据本发明，在完成自动增益控制功能之前利用模数转换器的输出的样本，以使用样本的自相关来检测符号定时，以及支持平均窗口大小和 提供延迟值以优化复杂性并允许高可靠性的信号解调。

公开(公告)号：US20050122912A1

公开(公告)日：2005-06-09

申请号：US10855274

申请日：2004-05-26

申请人： Taehyun Jeon ,  Sok-Kyu Lee

发明人： Taehyun Jeon ,  Sok-Kyu Lee

IPC分类号： H04B7/26 ,  H04B7/005 ,  H04L1/00

CPC分类号： H04L1/0003 ,  H04W52/04 ,  H04W52/241

摘要： Disclosed is a link margin adaptation method using feedback information of a wireless communication system. For transmission and reception of data between two nodes of the wireless communication system, a transmission node requests a receiving node to transmit a link margin. The transmission node receives the link margin, and selects one of a white noise table or a delay spread table according to a delay spread value between the two nodes. Then, the transmission node adapts a link between the two nodes to a transmission mode and decides a transmission rate to transmit data at the decided transmission rate, thereby improving transmission capacity of the wireless communication system, obtaining the optimum link state, extending power utilization time of stations, and reducing interference between stations.

摘要翻译： 公开了一种使用无线通信系统的反馈信息的链路余量调整方法。 为了在无线通信系统的两个节点之间发送和接收数据，传输节点请求接收节点发送链路余量。 发送节点接收链路余量，根据两个节点之间的延迟扩展值，选择白噪声表或延迟扩展表之一。 然后，传输节点将两个节点之间的链路适配为传输模式，并决定传输速率以确定的传输速率传输数据，从而提高无线通信系统的传输容量，获得最佳链路状态，延长电源利用时间 的站点，并减少站点之间的干扰。

公开(公告)号：US09246563B2

公开(公告)日：2016-01-26

申请号：US13504925

申请日：2010-10-30

申请人： Yu-Ro Lee ,  Jong-Ee Oh ,  Sok-Kyu Lee

发明人： Yu-Ro Lee ,  Jong-Ee Oh ,  Sok-Kyu Lee

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

CPC分类号： H04B7/0452 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0015 ,  H04L1/08 ,  H04L25/0204

摘要： 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.

摘要翻译： 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

申请人： Yun-Joo Kim ,  Sok-Kyu Lee

发明人： Yun-Joo Kim ,  Sok-Kyu Lee

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

CPC分类号： H04W72/005 ,  H04L45/74 ,  H04L69/22 ,  H04W4/06 ,  H04W28/06 ,  H04W72/0406

摘要： 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.

摘要翻译： 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

申请人： Jeeyon Choi ,  Yun-Joo Kim ,  Sok-Kyu Lee

发明人： Jeeyon Choi ,  Yun-Joo Kim ,  Sok-Kyu Lee

IPC分类号： H04W4/08 ,  H04W8/18 ,  H04W8/26

CPC分类号： H04W4/08 ,  H04L61/2069 ,  H04W8/186 ,  H04W8/26 ,  H04W84/12

摘要： 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.

摘要翻译： 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：US08873487B2

公开(公告)日：2014-10-28

申请号：US13391904

申请日：2010-08-24

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

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

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

CPC分类号： H04W72/046 ,  H04L5/0037 ,  H04W84/12

摘要： 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.

摘要翻译： 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

申请人： Yun-Joo Kim ,  Jae-Seung Lee ,  Sok-Kyu Lee

发明人： Yun-Joo Kim ,  Jae-Seung Lee ,  Sok-Kyu Lee

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

CPC分类号： H04B7/0452 ,  H04W74/0816

摘要： 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.

摘要翻译： 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：US08553626B2

公开(公告)日：2013-10-08

申请号：US12634297

申请日：2009-12-09

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

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

IPC分类号： H04W72/04

CPC分类号： H04W72/10 ,  H04W74/0808

摘要： 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.

摘要翻译： 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。