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：US09141963B2

公开(公告)日：2015-09-22

申请号：US13152030

申请日：2011-06-02

Applicant: Keon Su Lee ,  Choong Hee Lee ,  Il Gu Lee ,  Yung Seong Lee ,  Kyung Hoon Kim ,  Hye Jin Kang

Inventor： Keon Su Lee ,  Choong Hee Lee ,  Il Gu Lee ,  Yung Seong Lee ,  Kyung Hoon Kim ,  Hye Jin Kang

IPC: G06Q30/00 ,  G06Q30/02

CPC classification number: G06Q30/02 ,  G06Q30/0259 ,  G06Q30/0261 ,  G06Q30/0277

Abstract: Provided are a system and method for providing a wireless network service to a user terminal free of charge, by providing a doorway page for exposing an advertisement on the user terminal provided with the wireless network service through an access point. Accordingly, the user terminal may be provided with the wireless network service free of charge, other than the cost of viewing the advertisement exposed on the doorway page. An advertiser and a proprietor may expose the advertisement at the cost of providing the free wireless network service.

Abstract translation: 提供了一种通过提供通过接入点提供无线网络服务的用户终端上的广告曝光的门口页面来向用户终端免费提供无线网络服务的系统和方法。 因此，用户终端可以免费提供无线网络服务，而不是观看在门口页面上暴露的广告的费用。 广告商和所有者可以以提供免费无线网络服务为代价来公开广告。

公开(公告)号：US09001929B2

公开(公告)日：2015-04-07

申请号：US13347143

申请日：2012-01-10

Applicant: Il Gu Lee ,  Heejung Yu ,  Hun Sik Kang ,  Sok Kyu Lee

Inventor： Il Gu Lee ,  Heejung Yu ,  Hun Sik Kang ,  Sok Kyu Lee

IPC: H04L27/20 ,  H04L27/26 ,  H04L1/00 ,  H04L1/08

CPC classification number: H04L27/2602 ,  H04L1/0072 ,  H04L1/0079 ,  H04L1/08

Abstract: A method and an apparatus for a transmitter to transmit data in a wireless communication system are provided. This method includes: generating a first signal field including at least one symbol; generating a second signal field configured by repeating at least one symbol of the first signal field; and transmitting a frame including the first signal field, the second signal field, and a data field and a first symbol of the second signal field is modulated through binary phase shift keying (BPSK) and symbols from a second symbol of the second signal field are modulated through Q-BPSK. According to the present invention, a service filed can be extended while maintaining compatibility with a wireless communication system in the related art by transmitting a frame using symbol repetition.

Abstract translation: 提供了一种用于在无线通信系统中发送数据的方法和装置。 该方法包括：生成包括至少一个符号的第一信号字段; 产生通过重复所述第一信号域的至少一个符号来配置的第二信号域; 并且通过二进制相移键控（BPSK）来调制包括第一信号场，第二信号场和数据场以及第二信号场的第一符号的帧，并且来自第二信号场的第二符号的符号是 通过Q-BPSK进行调制。 根据本发明，通过使用符号重复发送帧，可以在维持与现有技术中的无线通信系统的兼容性的同时扩展服务范围。

公开(公告)号：US08774222B2

公开(公告)日：2014-07-08

申请号：US13370573

申请日：2012-02-10

Applicant: Heejung Yu ,  Il Gu Lee ,  Min Ho Cheong ,  Hun Sik Kang ,  Sok Kyu Lee

Inventor： Heejung Yu ,  Il Gu Lee ,  Min Ho Cheong ,  Hun Sik Kang ,  Sok Kyu Lee

IPC: H04J3/24

CPC classification number: H04L1/0027 ,  H04L27/2605 ,  H04L27/2613 ,  H04L27/2634 ,  H04W84/12

Abstract: A channel sounding method in a wireless local area network (WLAN) system is provided. The method, performed by a transmitter, includes transmitting a null data packet announcement (NDPA) frame to a receiver to initiate a channel sounding procedure; transmitting a null data packet (NDP) to the receiver and receiving a feedback frame. The feedback frame includes a plurality of segment frames and a channel feedback report. The channel feedback report is split into a plurality of feedback segments. Each of the plurality of feedback segments is respectively included in each of the plurality of segment frames. The each of the plurality of segment frames includes a first-segment subfield indicating whether the each of the plurality of feedback segment included is a first segment and a remaining-segment subfield indicating the number of remaining feedback segments.

Abstract translation: 提供了一种无线局域网（WLAN）系统中的信道探测方法。 由发射机执行的方法包括向接收机发送空数据分组公告（NDPA）帧以发起信道探测过程; 向接收机发送空数据分组（NDP）并接收反馈帧。 反馈帧包括多个分段帧和信道反馈报告。 信道反馈报告被分成多个反馈段。 多个反馈段中的每一个分别包括在多个段帧中的每一个中。 多个段帧中的每一个包括指示所包括的多个反馈段中的每一个是否为第一段的第一段子字段和指示剩余反馈段的数目的剩余段子字段。

公开(公告)号：US08750269B2

公开(公告)日：2014-06-10

申请号：US12910718

申请日：2010-10-22

Applicant: Il-Gu Lee ,  Jeeyon Choi ,  Sok-Kyu Lee

Inventor： Il-Gu Lee ,  Jeeyon Choi ,  Sok-Kyu Lee

IPC: H04W4/00

CPC classification number: H04W52/242 ,  H04W24/08 ,  H04W52/243 ,  H04W52/267 ,  H04W84/12 ,  Y02D70/00

Abstract: A transmit power control method of a first station in a wireless LAN (WLAN) system includes: receiving path loss information from an (access point) AP, the path loss information containing a maximum value among path losses between the AP and at least one or more stations included in the WLAN system; controlling a transmit power by using the path loss information; and transmitting a frame according to the controlled transmit power. In said controlling the transmit power by using the path loss information, the transmit power is controlled by using a path loss obtained by adding the maximum value and a path loss between the first station and the AP or by using the path loss between the first station and the AP.

Abstract translation: 无线LAN（WLAN）系统中的第一站的发射功率控制方法包括：从（接入点）AP接收路径损耗信息，所述路径损耗信息包含AP与AP之间的路径损耗中的最大值， WLAN系统中包含更多的台站; 通过使用路径损耗信息来控制发射功率; 以及根据受控发射功率发送帧。 在通过使用路径损耗信息来控制发送功率时，通过使用通过将第一站和AP之间的最大值和路径损耗相加而获得的路径损耗或通过使用第一站点之间的路径损耗来获得发送功率 和AP。

公开(公告)号：US08649324B2

公开(公告)日：2014-02-11

申请号：US12884625

申请日：2010-09-17

Applicant: Il-Gu Lee ,  Hun-Sik Kang ,  Sok-Kyu Lee

Inventor： Il-Gu Lee ,  Hun-Sik Kang ,  Sok-Kyu Lee

IPC: H04W4/00

CPC classification number: H04W74/0816

Abstract: A data communication method in a basic service set (BSS) of a wireless communication system using a carrier sense multiple access with collision avoidance (CSMA/CA) protocol includes: performing, by first and second nodes within the BSS, communication within a predetermined first time period; and transmitting, by a third node within the BSS, data to a fourth node within the first time period through a channel which is not used by the other nodes.

Abstract translation: 使用具有冲突避免的载波侦听多路访问（CSMA / CA）协议的无线通信系统的基本服务集（BSS）中的数据通信方法包括：由BSS内的第一和第二节点执行预定的第一 时间段; 以及由所述BSS内的第三节点通过未被其他节点使用的信道在第一时间段内向第四节点发送数据。

公开(公告)号：US08630274B2

公开(公告)日：2014-01-14

申请号：US12914745

申请日：2010-10-28

Applicant: Il-Gu Lee ,  Sok-Kyu Lee

Inventor： Il-Gu Lee ,  Sok-Kyu Lee

IPC: H04W4/00

CPC classification number: H04W74/04 ,  H04W74/0816 ,  H04W74/0875

Abstract: A method for guaranteeing a data frame transmit opportunity in a wireless LAN system having three different transmission modes includes: setting a first transmission protection interval based on a lowest transmission mode, when a node of a mode having a lowest transmission rate among the three transmission modes exists in the wireless LAN system, aggregating a data frame to be transmitted within time of the set transmission protection interval, and transmitting the data frame; and setting a second transmission protection interval based on a mode having a highest transmission rate, when only nodes of a mode having a highest transmission rate among the three transmission modes exist, aggregating a data frame to be transmitted within time of the set transmission protection interval, and transmitting the data frame.

Abstract translation: 一种用于在具有三种不同传输模式的无线LAN系统中保证数据帧发送机会的方法包括：当在三种传输模式中具有最低传输速率的模式的节点时，基于最低传输模式设置第一传输保护间隔 存在于无线LAN系统中，在设定的传输保护间隔的时间内聚合要发送的数据帧，并发送数据帧; 并且当仅存在三个传输模式中具有最高传输速率的模式的节点时，基于具有最高传输速率的模式设置第二传输保护间隔，在设置的传输保护间隔的时间内聚合要传输的数据帧 ，并发送数据帧。

公开(公告)号：US08483235B2

公开(公告)日：2013-07-09

申请号：US12332001

申请日：2008-12-10

Applicant: Minho Cheong ,  Sok-Kyu Lee ,  Seung-Chan Bang ,  Il-Gu Lee

Inventor： Minho Cheong ,  Sok-Kyu Lee ,  Seung-Chan Bang ,  Il-Gu Lee

IPC: H04J4/00 ,  H04J1/00

CPC classification number: H04B7/0413 ,  H04B7/0613 ,  H04B7/0684 ,  H04B7/0854

Abstract: Provided are a preamble structure and a channel estimation algorithm thereof. A communication method for a transmitter for channel estimation in a Multiple Input Multiple Output (MIMO) wireless communication system having N receiving antennas, includes generating a preamble interval having a short training field that includes a predetermined pattern iterated N times on a time domain and is used for compensating for a carrier frequency offset, and transmitting a packet having the preamble interval.

Abstract translation: 提供了前导码结构及其信道估计算法。 一种用于具有N个接收天线的多输入多输出（MIMO）无线通信系统中用于信道估计的发射机的通信方法，包括生成具有短训练场的前同步码间隔，该训练场包括在时域上迭代N次的预定模式，并且是 用于补偿载波频率偏移，以及发送具有前导码间隔的分组。

公开(公告)号：US20130163565A1

公开(公告)日：2013-06-27

申请号：US13615454

申请日：2012-09-13

Applicant: IL GU LEE ,  Sok Kyu Lee

Inventor： IL GU LEE ,  Sok Kyu Lee

IPC: H04W36/32 ,  H04W36/30

CPC classification number: H04W36/32 ,  H04W36/30

Abstract: A communication method based on an access point (AP) in a radio communication system is provided. The method includes: acquiring positional information regarding at least one station (STA) and at least one adjacent AP; acquiring interference information from the at least one adjacent AP; determining whether to move based on the positional information and the interference information; determining a position to move based on the positional information and the interference information when determining to move; moving to the position to move; and providing communication services to a subscribed STA at the position.

Abstract translation: 提供了一种基于无线电通信系统中的接入点（AP）的通信方法。 所述方法包括：获取关于至少一个站（STA）和至少一个相邻AP的位置信息; 从所述至少一个相邻AP获取干扰信息; 基于所述位置信息和所述干扰信息确定是否移动; 当确定移动时，基于位置信息和干扰信息确定移动位置; 移动到位置移动; 以及在该位置向订阅的STA提供通信服务。

公开(公告)号：US08472577B2

公开(公告)日：2013-06-25

申请号：US12274056

申请日：2008-11-19

Applicant: Minho Cheong ,  Yu-Ro Lee ,  Sok-Kyu Lee ,  Il-Gu Lee

Inventor： Minho Cheong ,  Yu-Ro Lee ,  Sok-Kyu Lee ,  Il-Gu Lee

IPC: H04L7/00

CPC classification number: H04W56/0035 ,  H04L7/042

Abstract: Provided is an apparatus and method for detecting reception signal symbol synchronization in a wireless communication system. The method, includes: calculating a channel power value in each of multiple antennas; selecting and averaging at least 2 channel power values; compensating carrier frequency offset for an average value; and determining a symbol boundary of a reception signal according to the size of the average value compensating the carrier frequency offset.

Abstract translation: 提供一种用于在无线通信系统中检测接收信号符号同步的装置和方法。 该方法包括：计算多个天线中每个天线的信道功率值; 选择和平均至少2个通道功率值; 补偿平均值的载波频率偏移; 以及根据补偿载波频率偏移的平均值的大小来确定接收信号的符号边界。