公开(公告)号：US20090154405A1

公开(公告)日：2009-06-18

申请号：US12129007

申请日：2008-05-29

Applicant: Jee-Yon CHOI ,  Yoo-Seung SONG ,  Yun-Joo KIM ,  Hyun-Gu PARK ,  Kwhang-Hyun RYU ,  Sok-Kyu LEE

Inventor： Jee-Yon CHOI ,  Yoo-Seung SONG ,  Yun-Joo KIM ,  Hyun-Gu PARK ,  Kwhang-Hyun RYU ,  Sok-Kyu LEE

IPC: H04Q7/00

CPC classification number: H04W72/1278 ,  H04W28/20

Abstract: Provided are a MAC method and a method for transmitting data using the same in a WLAN. The MAC method includes: transmitting a bandwidth scheduling report frame for informing information on downlinks and uplinks allocated to a terminal by including the bandwidth scheduling report frame in one of the downlinks where the bandwidth scheduling report frame includes a plurality of downlinks, a plurality of uplinks, and a plurality of short uplinks and the number of the plurality of downlinks is equal to the number of the plurality of uplinks; receiving a bandwidth request frame for requesting bandwidth allocation through one of the uplinks; and allocating a bandwidth to each of the terminals by an unit of the downlink and the uplink.

Abstract translation: 提供了一种MAC方法和一种用于在WLAN中发送数据的方法。 MAC方法包括：通过在带宽调度报告帧包括多个下行链路的下行链路之一中包括带宽调度报告帧来发送用于通知分配给终端的下行链路和上行链路的信息的带宽调度报告帧，多个上行链路 和多个短上行链路，并且多个下行链路的数量等于多个上行链路的数量; 接收用于通过所述上行链路之一请求带宽分配的带宽请求帧; 并且通过下行链路和上行链路的单元向每个终端分配带宽。

公开(公告)号：US07266164B2

公开(公告)日：2007-09-04

申请号：US10855698

申请日：2004-05-26

Applicant: Taehyun Jeon ,  Sok-Kyu Lee

Inventor： Taehyun Jeon ,  Sok-Kyu Lee

IPC: H03D1/00

CPC classification number: H04L7/041

Abstract: 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.

Abstract translation: 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：US20070133446A1

公开(公告)日：2007-06-14

申请号：US11636448

申请日：2006-12-11

Applicant: Chan-Ho Yoon ,  Hee-Jung Yu ,  Eun-Young Choi ,  Jung-Bo Son ,  Il-Gu Lee ,  Deuk-Su Lyu ,  Tae-hyun Jeon ,  Seung-Wook Min ,  Kwhang-Hyun Ryu ,  Kyoung-Ju Noh ,  Yun-Joo Kim ,  Kyoung-Hee Song ,  Sok-Kyu Lee ,  Seung-chan Bang ,  Seung-Ku Hwang

Inventor： Chan-Ho Yoon ,  Hee-Jung Yu ,  Eun-Young Choi ,  Jung-Bo Son ,  Il-Gu Lee ,  Deuk-Su Lyu ,  Tae-hyun Jeon ,  Seung-Wook Min ,  Kwhang-Hyun Ryu ,  Kyoung-Ju Noh ,  Yun-Joo Kim ,  Kyoung-Hee Song ,  Sok-Kyu Lee ,  Seung-chan Bang ,  Seung-Ku Hwang

IPC: H04B7/00

CPC classification number: H04L1/0026 ,  H04L1/0003 ,  H04L1/0059 ,  H04L1/0075 ,  H04L1/08 ,  H04L1/188

Abstract: The present invention relates to a transmitting apparatus of a wireless communication system, and a method thereof. The transmitting apparatus monitors receiving of response data for data that has been transmitted to a receiving end, and sets a first parameter for counting successful receipts according to receiving on the response data. The transmitting apparatus demodulates the response data and extracts the number of demodulated data that satisfies a first set value. Subsequently, it is determined whether the first parameter satisfies a second set value and the number of demodulated data satisfies a predetermined ratio of a referential amount of packets. According to the present invention, an efficient transmission mode for a channel state can be provided with reference to an extracted number of soft-decision data from response data received at a receiving end. In addition, a transmission mode can be determined by using only response data according to the present invention.

Abstract translation: 无线通信系统的发送装置技术领域本发明涉及无线通信系统的发送装置及其方法。 发送装置监视已经发送到接收端的数据的响应数据的接收，并且根据对响应数据的接收，设置用于计数成功收据的第一参数。 发送装置解调响应数据，并提取满足第一设定值的解调数据的数量。 随后，确定第一参数是否满足第二设定值，并且解调数据的数量满足分组的参考量的预定比率。 根据本发明，可以参照从接收端接收到的响应数据提取的软判决数据数来提供用于信道状态的有效传输模式。 此外，可以通过仅使用根据本发明的响应数据来确定传输模式。

公开(公告)号：US20070115802A1

公开(公告)日：2007-05-24

申请号：US11635927

申请日：2006-12-08

Applicant: Hee-Jung Yu ,  Eun-Young Choi ,  Chan-Ho Yoon ,  Jung-Bo Son ,  Il-Gu Lee ,  Deuk-Su Lyu ,  Tae-hyun Jeon ,  Seung-Wook Min ,  Sok-Kyu Lee ,  Seung-Chan Bang ,  Seung-Ku Hwang

Inventor： Hee-Jung Yu ,  Eun-Young Choi ,  Chan-Ho Yoon ,  Jung-Bo Son ,  Il-Gu Lee ,  Deuk-Su Lyu ,  Tae-hyun Jeon ,  Seung-Wook Min ,  Sok-Kyu Lee ,  Seung-Chan Bang ,  Seung-Ku Hwang

IPC: H04J11/00

CPC classification number: H04L5/0046 ,  H04L27/2613 ,  H04L27/2627 ,  H04L27/2649 ,  H04W28/14 ,  H04W72/04 ,  H04W84/12

Abstract: The present invention relates to an orthogonal frequency division multiplexing wireless local area network (LAN) transmitting/receiving system for providing expanded service coverage, and a method thereof. According to the present invention, first OFDM modulation is performed for an even-numbered time, and second OFDM modulation is performed by changing subcarrier allocation positions of first OFDM modulated symbols for an odd-numbered time. In addition, a transmitting frame including a plurality of signal fields according to the first and second OFDM modulation is transmitted. The receiving system determines a format configuration of the received frame to determine whether a signal field is repeatedly generated in the frame. When it is determined that the signal field is not repeatedly generated, corresponding demodulation is performed. When it is determined that the signal field is repeatedly performed, the signal field is demodulated by using first bit allocation information and is demodulated by using second bit allocation information having a 1/2 value of the first bit allocation information. A data field is demodulated according to the demodulated signal field.

Abstract translation: 本发明涉及一种用于提供扩展业务覆盖的正交频分复用无线局域网（LAN）发送/接收系统及其方法。 根据本发明，对于偶数时间执行第一OFDM调制，并且通过改变奇数时间的第一OFDM调制符号的副载波分配位置来执行第二OFDM调制。 此外，发送包括根据第一和第二OFDM调制的多个信号字段的发送帧。 接收系统确定接收到的帧的格式配置，以确定帧中是否重复产生信号字段。 当确定信号域不被重复产生时，执行相应的解调。 当确定重复执行信号场时，通过使用第一比特分配信息解调信号场，并且通过使用具有第一比特分配信息的1/2值的第二比特分配信息进行解调。 根据解调信号字段对数据字段进行解调。

公开(公告)号：US20050122912A1

公开(公告)日：2005-06-09

申请号：US10855274

申请日：2004-05-26

Applicant: Taehyun Jeon ,  Sok-Kyu Lee

Inventor： Taehyun Jeon ,  Sok-Kyu Lee

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

CPC classification number: H04L1/0003 ,  H04W52/04 ,  H04W52/241

Abstract: 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.

Abstract translation: 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：US6160426A

公开(公告)日：2000-12-12

申请号：US222188

申请日：1998-12-29

Applicant: Sok Kyu Lee

Inventor： Sok Kyu Lee

IPC: H03L7/00 ,  G06F5/00 ,  G06F7/68 ,  G11C5/06 ,  G11C7/10 ,  G11C19/00 ,  H03L7/18 ,  H03B19/00

CPC classification number: G06F5/00 ,  G06F7/68 ,  G11C5/066 ,  G11C7/1078 ,  G11C7/1084 ,  G11C7/1087 ,  G11C7/222 ,  G11C19/00 ,  H03L7/18

Abstract: A clock frequency multiplying apparatus is disclosed. The apparatus includes a clock generator for generating a clock signal, a data input buffer for serially receiving a data, address, instruction, etc. when a transmission clock signal generated by the clock generator is inputted, a data shift register for grouping the data received through the data input buffer into a data packet and, in parallel, transferring the same to a memory, and a clock frequency multiplier for multiplying a transmission clock frequency generated by the clock generator and inputting the same into the data shift register for implementing a fast data transfer by multiplying a clock frequency by dividing the clock signal in an internal circuit of the DRAM into a critical path and a non-critical path by using a transmission clock signal for the critical path and the multiplied clock signal for the non-critical path and enhancing an internal data transfer ratio.

Abstract translation: 公开了一种时钟倍频装置。 该装置包括用于产生时钟信号的时钟发生器，用于在由时钟发生器产生的传输时钟信号被输入时串行地接收数据，地址，指令等的数据输入缓冲器，用于对接收到的数据进行分组的数据移位寄存器 通过数据输入缓冲器进入数据包，并行地将其传送到存储器，以及时钟倍频器，用于将由时钟发生器产生的传输时钟频率乘以数据包，并将其输入到数据移位寄存器中，以实现快速 通过使用用于关键路径的传输时钟信号和用于非关键路径的倍增时钟信号将DRAM的内部电路中的时钟信号除以关键路径和非关键路径来将时钟频率乘以数据传输 并提高内部数据传输率。

公开(公告)号：US09241318B2

公开(公告)日：2016-01-19

申请号：US13336864

申请日：2011-12-23

Applicant: Minho Cheong ,  Sok-Kyu Lee

Inventor： Minho Cheong ,  Sok-Kyu Lee

IPC: H04B7/02 ,  H04L1/02 ,  H04W56/00 ,  H04B7/04 ,  H04L27/26

CPC classification number: H04W56/00 ,  H04B7/0426 ,  H04L27/2656

Abstract: Disclosed is an apparatus for receiving data in a communication system, including a receiving unit configured to receive data through a multi-channel in a MIMO (multi-input multi-output) scheme; a calculating unit configured to calculate a receiving power distribution value in each antenna of a multi-antenna and in each channel of the multi-channel, correspondingly to the MIMO scheme, and to generate a receiving synchronization signal using the receiving power distribution value; and a synchronization unit configured to synchronize frames for the data receiving of the receiving unit using the receiving synchronization signal.

Abstract translation: 公开了一种用于在通信系统中接收数据的装置，包括接收单元，被配置为在MIMO（多输入多输出）方案中通过多信道接收数据; 计算单元，被配置为对应于MIMO方案来计算多天线的每个天线和多信道的每个信道中的接收功率分布值，并且使用接收功率分布值来生成接收同步信号; 以及同步单元，被配置为使用接收同步信号来同步用于接收单元的数据接收的帧。

公开(公告)号：US09107185B2

公开(公告)日：2015-08-11

申请号：US13479218

申请日：2012-05-23

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

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

IPC: H04W74/00 ,  H04L1/18 ,  H04W28/04

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：US08891643B2

公开(公告)日：2014-11-18

申请号：US13620517

申请日：2012-09-14

Applicant: In Kyeong Choi ,  Sok Kyu Lee

Inventor： In Kyeong Choi ,  Sok Kyu Lee

IPC: H04K1/10 ,  H04L27/28 ,  H04W52/24 ,  H04W52/42

CPC classification number: H04W52/243 ,  H04B7/0443 ,  H04W52/42

Abstract: A method and apparatus for allocating transmission power in a transmission terminal having at least one antenna of a multi-input multi-output (MIMO) system are provided. The method includes: measuring inter-stream interference of a plurality of streams; measuring inter-user interference of a plurality of users; and determining the transmission power based on the inter-stream interference and the inter-user interference, wherein the transmission power is determined using an iterative water-filling algorithm in which the Karush-Kuhn-Tucker (KKT) system is iteratively applied to all of the plurality of streams and all of the plurality of users. According to the present invention, several receive antennas are mounted in the MIMO system, thereby making it possible to receive multiple streams. In addition, when the multiple streams are received, transmission power may be allocated to each transmission stream.

Abstract translation: 提供一种用于在具有多输入多输出（MIMO）系统的至少一个天线的传输终端中分配传输功率的方法和装置。 该方法包括：测量多个流的流间干扰; 测量多个用户的用户间干扰; 以及基于所述流间干扰和所述用户间干扰来确定所述传输功率，其中，所述传输功率是使用迭代注水算法确定的，其中所述Karush-Kuhn-Tucker（KKT）系统被迭代地应用于 多个流和所有多个用户。 根据本发明，在MIMO系统中安装多个接收天线，从而可以接收多个流。 此外，当接收到多个流时，可以将发送功率分配给每个传输流。

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。