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：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：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。

公开(公告)号：US08681673B2

公开(公告)日：2014-03-25

申请号：US13081930

申请日：2011-04-07

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

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

IPC分类号： H04W52/02

CPC分类号： H04W52/0203 ,  H04W52/0229 ,  Y02D70/142

摘要： 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.

摘要翻译： 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：US20100260246A1

公开(公告)日：2010-10-14

申请号：US12808179

申请日：2008-11-28

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

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

IPC分类号： H04B1/38 ,  H04L27/00

CPC分类号： H04B1/40

摘要： 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.

摘要翻译： 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：US20100142468A1

公开(公告)日：2010-06-10

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。

公开(公告)号：US20100118851A1

公开(公告)日：2010-05-13

申请号：US12615557

申请日：2009-11-10

申请人： Yun-Joo Kim ,  Jeeyon Choi ,  Yoo-Seung Song ,  Yu-Ro Lee ,  Jong-Ee Oh ,  Minho Cheong ,  Sok-Kyu Lee

发明人： Yun-Joo Kim ,  Jeeyon Choi ,  Yoo-Seung Song ,  Yu-Ro Lee ,  Jong-Ee Oh ,  Minho Cheong ,  Sok-Kyu Lee

IPC分类号： H04W40/00

CPC分类号： H04W84/12

摘要： Provided are an apparatus and method for providing a WLAN service using multiple channels. The wireless local area network (WLAN) service apparatus includes a service request receiver configured to receive service request information from a first wireless terminal accessed through a first channel, a data receiver configured to receive data from a first access point accessed through a second channel according to the service request information, a data transmitter configured to transmit the data to the first wireless terminal in a predetermined service area, and an access controller configured to control the first wireless terminal and the first access point to be accessed through different channels.

摘要翻译： 提供了一种用于使用多个信道来提供WLAN服务的装置和方法。 无线局域网（WLAN）服务设备包括：服务请求接收器，被配置为从通过第一信道访问的第一无线终端接收服务请求信息;数据接收器，被配置为从通过第二信道访问的第一接入点接收数据， 服务请求信息;数据发送器，被配置为将数据发送到预定服务区域中的第一无线终端;以及接入控制器，被配置为控制要通过不同信道访问的第一无线终端和第一接入点。

公开(公告)号：US08331473B2

公开(公告)日：2012-12-11

申请号：US12238082

申请日：2008-09-25

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

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

IPC分类号： H04B7/02

CPC分类号： H04B7/0417 ,  H04L1/0631

摘要： Provided is a reception apparatus and method of a Multiple Input Multiple Output (MIMO) system that receives a plurality of different data streams in a multiple cell environment. The reception apparatus for receiving a plurality of different data streams in a multiple input multiple output (MIMO) antenna system includes a data stream detector for detecting each data stream by removing interference between the different data streams while maintaining channel information; and a cochannel interference (CCI) remover for removing cochannel interference from each data stream detected in the data stream detector. The present invention can remove cochannel interference and increase channel capacity to thereby acquire both diversity gain and multiplexing gain.

摘要翻译： 提供了一种在多小区环境中接收多个不同数据流的多输入多输出（MIMO）系统的接收装置和方法。 用于在多输入多输出（MIMO）天线系统中接收多个不同数据流的接收装置包括：数据流检测器，用于通过在保持信道信息的同时消除不同数据流之间的干扰来检测每个数据流; 以及用于从数据流检测器中检测到的每个数据流去除同信道干扰的同信道干扰（CCI）去除器。 本发明可以消除同信道干扰并增加信道容量，从而获得分集增益和复用增益。

公开(公告)号：US08121234B2

公开(公告)日：2012-02-21

申请号：US12178150

申请日：2008-07-23

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

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

IPC分类号： H04B7/10

CPC分类号： H04L27/2647 ,  H04B7/0413 ,  H04L25/061 ,  H04L25/067

摘要： Provided are a multi-dimensional detector for a receiver of an MIMO system and a method thereof. The multi-dimensional detector includes a first symbol detecting unit for calculating symbol distance values using an upper triangular matrix (R) obtained from QR decomposition to detect an mth symbol; a symbol deciding unit for deciding a symbol having a minimum distance value among the calculated symbol distance values from the first symbol detecting unit; and a second symbol detecting unit for calculating symbol distance values using an updated received signal y and the upper triangular matrix R to detect a (m−1)th symbol.

摘要翻译： 提供了一种用于MIMO系统的接收机的多维检测器及其方法。 多维检测器包括：第一符号检测单元，用于使用从QR分解获得的上三角矩阵（R）来计算符号距离值以检测第m个符号; 符号判定单元，用于从所述第一符号检测单元确定所计算的符号距离值中具有最小距离值的符号; 以及第二符号检测单元，用于使用更新的接收信号y和上三角矩阵R来计算符号距离值以检测第（m-1）个符号。

公开(公告)号：US20110222478A1

公开(公告)日：2011-09-15

申请号：US13046423

申请日：2011-03-11

申请人： Yu-Ro LEE ,  Yun-Joo Kim ,  Jong-Ee Oh ,  Minho Cheong ,  Sok-Kyu Lee

发明人： Yu-Ro LEE ,  Yun-Joo Kim ,  Jong-Ee Oh ,  Minho Cheong ,  Sok-Kyu Lee

IPC分类号： H04W4/00

CPC分类号： H04W72/005 ,  H04W4/08

摘要： Provided a method for simultaneously transmitting data frames to a plurality of STAs in a multi-user based wireless communication system. The method includes: requesting sounding or feedback for the plurality of STAs by using a first control information frame containing first group information; receiving responses to the sounding or feedback request; reconfiguring the plurality of STAs composing the first group into a plurality of second groups on the basis of the responses such that the sum of maximum transport streams of the respective STAs composing one group becomes equal to or less than the maximum number of streams transmitted by an AP; transmitting a second control information frame containing second group information on the respective second groups to the plurality of STAs composing the first group; and transmitting data frames by using the second group information.

摘要翻译： 提供了一种用于在基于多用户的无线通信系统中同时向多个STA发送数据帧的方法。 该方法包括：通过使用包含第一组信息的第一控制信息帧来请求对多个STA的探测或反馈; 接收响应声音或反馈请求; 基于所述响应，将构成第一组的多个STA重新配置成多个第二组，使得构成一组的各个STA的最大传输流之和变得等于或小于由一 AP; 将包含关于各个第二组的第二组信息的第二控制信息帧发送到构成第一组的多个STA; 以及通过使用第二组信息发送数据帧。