公开(公告)号：US20050078665A1

公开(公告)日：2005-04-14

申请号：US10853890

申请日：2004-05-25

Applicant: Hee-Jung Yu ,  Hee-Soo Lee ,  Sok-Kyu Lee

Inventor： Hee-Jung Yu ,  Hee-Soo Lee ,  Sok-Kyu Lee

IPC: H04B7/04 ,  H04B7/06 ,  H04B7/08 ,  H04L1/06 ,  H04Q11/00

CPC classification number: H04L1/0656 ,  H04B7/0678 ,  H04B7/086

Abstract: A spatial multiplexing detection device using a MIMO technology comprises a MIMO detector for detecting receive symbols which correspond to symbols transmitted through transmit antennas from receive signals when the transmit data transmitted by the terminal group are received through receive antennas; a terminal identifier for identifying the receive symbols detected by the MIMO detector into symbols which correspond to respective terminals in the terminal group; a symbol demapper for demapping the receive symbols identified by the terminal identifier to binary data which correspond to a modulation method used by the terminal group; and a reverse data processor for performing deinterleaving, decoding of error correction codes, and descrambling on the binary data demapped by the symbol demapper, and detecting receive data of the respective terminals.

Abstract translation: 使用MIMO技术的空间复用检测装置包括MIMO检测器，用于当通过接收天线接收到由终端组发送的发送数据时，从接收信号检测对应于通过发送天线发送的符号的接收符号; 用于将由MIMO检测器检测到的接收符号识别为对应于终端组中的各个终端的符号的终端标识符; 符号解映射器，用于将由终端标识符识别的接收符号解映射成对应于由终端组使用的调制方法的二进制数据; 以及反向数据处理器，用于执行对符号解映射器解映射的二进制数据的解交织，纠错码的解码和解扰，以及检测各个终端的接收数据。

公开(公告)号：US09769002B2

公开(公告)日：2017-09-19

申请号：US13491941

申请日：2012-06-08

Applicant: Woo-Yong Lee ,  Sok-Kyu Lee

Inventor： Woo-Yong Lee ,  Sok-Kyu Lee

IPC: H04L27/26 ,  H04L25/02 ,  H04L7/10 ,  H04W56/00 ,  H04W84/12

CPC classification number: H04L27/2656 ,  H04L7/10 ,  H04L25/0202 ,  H04L25/0226 ,  H04L27/2607 ,  H04L27/2613 ,  H04L27/2628 ,  H04L27/2662 ,  H04L27/2663 ,  H04W56/001 ,  H04W84/12

Abstract: A method of configuring a preamble of a downlink frame for synchronization in data frame transmission of a 60 GHz a wireless local area network system, the method comprising arranging a short preamble having a plurality of repetitive S symbols, and an IS symbol, and arranging a long preamble having a long cyclic prefix (CP) and a plurality of L symbols for frame synchronization and symbol timing by performing auto-correlation according to the length of window of the auto-correlation.

公开(公告)号：US09154349B2

公开(公告)日：2015-10-06

申请号：US12912653

申请日：2010-10-26

Applicant: Il-Gu Lee ,  Sok-Kyu Lee ,  Hyun-Kyu Chung

Inventor： Il-Gu Lee ,  Sok-Kyu Lee ,  Hyun-Kyu Chung

IPC: H04L27/18 ,  H04L7/00 ,  H04W8/26

CPC classification number: H04L27/18 ,  H04L7/00 ,  H04W8/26 ,  H04W52/0225 ,  Y02D70/1244 ,  Y02D70/14 ,  Y02D70/142

Abstract: A wireless transmitter which performs reconfiguration for high mobility and high throughput includes: an operation mode decision unit configured to decide an operation mode depending on mobility, a required data rate, and wireless link performance; a clock generation unit configured to generate a plurality of clock signals; a selection unit configured to select necessary clock signals among the plurality of clock signals generated by the clock generation unit according to the operation mode decided by the operation mode decision unit; and at least one or more digital modulation units configured to modulate transmitted data by adjusting a signal bandwidth of a frequency domain and a transmission time of a time domain using the clock signals selected by the selection unit.

Abstract translation: 执行高移动性和高吞吐量的重新配置的无线发射机包括：操作模式判定单元，被配置为根据移动性，所需数据速率和无线链路性能来决定操作模式; 时钟生成单元，被配置为生成多个时钟信号; 选择单元，被配置为根据由所述操作模式判定单元决定的操作模式，在由所述时钟生成单元生成的所述多个时钟信号中选择必要的时钟信号; 以及至少一个或多个数字调制单元，被配置为通过使用由选择单元选择的时钟信号调整频域的信号带宽和时域的发送时间来调制发送数据。

公开(公告)号：US08982793B2

公开(公告)日：2015-03-17

申请号：US13612694

申请日：2012-09-12

Applicant: Hyun Gu Park ,  Sok Kyu Lee

Inventor： Hyun Gu Park ,  Sok Kyu Lee

IPC: H04W74/04 ,  H04W74/00

CPC classification number: H04W74/00

Abstract: A method for controlling channel access performed by an access point (AP) in a wireless system is provided. The method includes: receiving at least one frame from at least one station (STA), respectively, for a specific time period, each frame including information on a contention window (CW) used when the frame is transmitted; processing information one at least one CW for each STA; determining whether to control the channel access based on the processed information on the CW; selecting an abnormal STA candidate group if it is determined that the channel access control is performed; and controlling the channel access to each STA included in the abnormal candidate STA group.

Abstract translation: 提供了一种用于控制由无线系统中的接入点（AP）执行的信道接入的方法。 该方法包括：分别从至少一个站（STA）接收特定时间段的至少一个帧，每个帧包括当发送帧时使用的竞争窗口（CW）的信息; 对每个STA处理信息至少一个CW; 基于所处理的关于CW的信息来确定是否控制信道访问; 如果确定执行了信道访问控制，则选择异常STA候选组; 以及控制对所述异常候选STA组中包括的每个STA的信道接入。

公开(公告)号：US08817921B2

公开(公告)日：2014-08-26

申请号：US12965333

申请日：2010-12-10

Applicant: Il-Gu Lee ,  Eun-Young Choi ,  Jung-Bo Son ,  Hun-Sik Kang ,  Sok-Kyu Lee

Inventor： Il-Gu Lee ,  Eun-Young Choi ,  Jung-Bo Son ,  Hun-Sik Kang ,  Sok-Kyu Lee

IPC: H04L27/14 ,  H04L27/26

CPC classification number: H04L27/2656 ,  H04L5/0023 ,  H04L27/2657 ,  H04L27/2675 ,  H04L27/2678 ,  H04L27/2688

Abstract: An apparatus for detecting a packet end point in a wireless communication system includes: a signal reception unit configured to receive a signal from an outside, convert the signal into a baseband signal, perform analog-digital conversion of the baseband signal, and perform a digital front end; a storage unit configured to store an output of the signal reception unit; a frequency offset estimation unit configured to estimate a frequency offset using the output of the storage unit; a frequency offset correction unit configured to compensate for a frequency error using the estimated frequency offset; an offset correlation unit configured to calculate correlation of the frequency offset and a cyclic prefix; an auto-correlation operation unit configured to calculate auto-correlation of the cyclic prefix; and a packet end detection unit configured to check a packet end point using the auto-correlation.

Abstract translation: 一种用于在无线通信系统中检测分组终点的装置包括：信号接收单元，被配置为从外部接收信号，将该信号转换为基带信号，执行基带信号的模数转换，并执行数字 前端; 存储单元，被配置为存储所述信号接收单元的输出; 频率偏移估计单元，被配置为使用所述存储单元的输出来估计频率偏移; 频率偏移校正单元，被配置为使用所估计的频率偏移来补偿频率误差; 偏移相关单元，被配置为计算所述频率偏移和循环前缀的相关性; 自相关操作单元，被配置为计算所述循环前缀的自相关; 以及分组结束检测单元，被配置为使用所述自相关来检查分组结束点。

公开(公告)号：US08761139B2

公开(公告)日：2014-06-24

申请号：US13336869

申请日：2011-12-23

Applicant: Minho Cheong ,  Sok-Kyu Lee

Inventor： Minho Cheong ,  Sok-Kyu Lee

IPC: H04W4/00

CPC classification number: H04W48/16 ,  H04W48/20

Abstract: Disclosed are an apparatus and a method for supporting access for a multi user to perform communication through a multi node by efficiently using a multi channel in a communication system of a multi user environment having the multi node, in which bands usable by STAs that intend to access an access point are searched in a multi channel; a transmission band for packet transmission is determined in the searched usable bands; and access to the access point is supported through the determined transmission band, and the transmission band is determined by performing ad-hoc through an ad-hoc media access control (MAC) protocol in the searched usable bands.

Abstract translation: 公开了一种用于支持多用户的访问以通过在具有多个节点的多用户环境的通信系统中有效地使用多信道来通过多节点执行通信的装置和方法，其中可用于STA的可用频带 在多频道中搜索接入点; 在所搜索的可用频带中确定分组传输的传输频带; 并且通过确定的传输频带来支持对接入点的接入，并且通过在所搜索的可用频带中的自组织媒体接入控制（MAC）协议来执行ad-hoc来确定传输频带。

公开(公告)号：US08717956B2

公开(公告)日：2014-05-06

申请号：US12970630

申请日：2010-12-16

Applicant: Je-Hun Lee ,  Sok-Kyu Lee

Inventor： Je-Hun Lee ,  Sok-Kyu Lee

IPC: G08C17/00 ,  H04B7/185 ,  H04J3/16 ,  H04B1/04 ,  H04B1/16 ,  H04B7/00

CPC classification number: H04W52/0235 ,  Y02D70/00 ,  Y02D70/142 ,  Y02D70/23

Abstract: A method for adaptively performing power saving in a station of a wireless communication system includes: receiving first power-save capability information from an AP, the first power-save capability information containing information on power-save schemes supported by a MAC layer of the AP; transmitting second power-save capability information to the AP in response to the first power-save capability information, the second power-save capability information containing information on power-save schemes supported by a MAC layer of the station; transmitting power-save policy information, into which properties of traffics used in the station are reflected, to the AP; and performing a power-save function while interworking with the MAC layer of the station, according to the power-save policy information based on a predetermined power-save scheme.

Abstract translation: 一种用于在无线通信系统的站中自适应地执行省电的方法包括：从AP接收第一省电能力信息，所述第一节电能力信息包含由所述AP的MAC层支持的关于节能方案的信息 ; 响应于所述第一节电能力信息向所述AP发送第二节电能力信息，所述第二节电能力信息包含由所述站的MAC层支持的关于节能方案的信息; 向AP提供将车站使用的业务属性反映的节电政策信息; 并且根据基于预定的省电方案的省电策略信息，在与站的MAC层互通的同时执行省电功能。

公开(公告)号：US08675556B2

公开(公告)日：2014-03-18

申请号：US13046423

申请日：2011-03-11

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

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

IPC: H04W4/00

CPC classification number: H04W72/005 ,  H04W4/08

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US08611266B2

公开(公告)日：2013-12-17

申请号：US12969708

申请日：2010-12-16

Applicant: Seungkwon Cho ,  Jaewoo Park ,  Sok-Kyu Lee

Inventor： Seungkwon Cho ,  Jaewoo Park ,  Sok-Kyu Lee

IPC: G08C17/00

CPC classification number: H04W76/28 ,  H04W52/0251 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/23

Abstract: A power control apparatus of a wireless communication terminal providing a voice over internet protocol (VoIP) service in a wireless communication system includes a user interface unit configured to include a voice CODEC using in the VoIP service, a controller configured to be connected to the user interface unit, include predetermined application programs including a VoIP application program, and control signaling for setting up a VoIP call and canceling a VoIP call, and a medium access control (MAC) processor configured to perform a medium access control function and include a timer unit for beginning a unscheduled-service period (U-SP) by receiving a VoIP call setup signal and a VoIP call cancel signal from the controller.

Abstract translation: 在无线通信系统中，提供无线通信协议（VoIP）服务的无线通信终端的电力控制装置包括：用户接口单元，被配置为包括在VoIP服务中使用的语音CODEC;被配置为连接到用户的控制器 接口单元，包括预定的应用程序，包括VoIP应用程序，以及用于建立VoIP呼叫和取消VoIP呼叫的控制信令;以及媒体访问控制（MAC）处理器，被配置为执行介质访问控制功能，并且包括定时器单元 用于通过从控制器接收VoIP呼叫建立信号和VoIP呼叫取消信号来开始非计划服务时段（U-SP）。

公开(公告)号：US20130208656A1

公开(公告)日：2013-08-15

申请号：US13612694

申请日：2012-09-12

Applicant: Hyun Gu PARK ,  Sok Kyu Lee

Inventor： Hyun Gu PARK ,  Sok Kyu Lee

IPC: H04W74/04

CPC classification number: H04W74/00

Abstract: A method for controlling channel access performed by an access point (AP) in a wireless system is provided. The method includes: receiving at least one frame from at least one station (STA), respectively, for a specific time period, each frame including information on a contention window (CW) used when the frame is transmitted; processing information one at least one CW for each STA; determining whether to control the channel access based on the processed information on the CW; selecting an abnormal STA candidate group if it is determined that the channel access control is performed; and controlling the channel access to each STA included in the abnormal candidate STA group.

Abstract translation: 提供了一种用于控制由无线系统中的接入点（AP）执行的信道接入的方法。 该方法包括：分别从至少一个站（STA）接收特定时间段的至少一个帧，每个帧包括当发送帧时使用的竞争窗口（CW）的信息; 对每个STA处理信息至少一个CW; 基于所处理的关于CW的信息来确定是否控制信道访问; 如果确定执行了信道访问控制，则选择异常STA候选组; 以及控制对所述异常候选STA组中包括的每个STA的信道接入。