公开(公告)号：KR101733121B1

公开(公告)日：2017-05-08

申请号：KR1020130052188

申请日：2013-05-08

Applicant: 한국전자통신연구원

Inventor： 정민호 ,  유희정 ,  이석규 ,  방승찬

IPC: H04W16/26 ,  H04W52/38

Abstract: 본발명은무선통신시스템에서커버리지를확장하는장치및 방법에관한것이다. 이러한본 명세서는, 무선신호를송신및 수신하는트랜시버(transceiver), 및상기트랜시버와기능적으로결합되어동작하는프로세서;를포함하되, RF 성능(capability) 범위에서조정가능한(adjustable) 전력부스팅(power boosting)을 SIG 필드내에서설정함을특징으로하는무선장치를개시한다.

公开(公告)号：KR1020130142932A

公开(公告)日：2013-12-30

申请号：KR1020130069404

申请日：2013-06-18

Applicant: 한국전자통신연구원

Inventor： 유희정 ,  정민호 ,  이재승 ,  권형진 ,  이석규

IPC: H04L27/26 ,  H04L27/18

CPC classification number: H04L27/2637 ,  H04B7/12 ,  H04L1/004 ,  H04L1/08 ,  H04L5/0007 ,  H04L5/001 ,  H04L5/0044 ,  H04L5/0053 ,  H04L27/2617 ,  H04L27/2621 ,  H04L27/2627 ,  H04W52/0209 ,  H04W72/0453 ,  H04W84/12 ,  Y02D70/00 ,  Y02D70/142

Abstract: A method and apparatus for OFDM transmission in a wireless LAN is disclosed. A method and apparatus for OFDM transmission in a wireless LAN according to one embodiment includes: a signal repeater repeating an encoded signal by a block to output the encoded signal and repeated signal together; an interleaver interleaving the encoded signal and repeated signal and outputting the interleaved signal; a modulator modulating the interleaved signal and outputting modulated symbols; and a phase rotation unit changing the phase of the modulated symbols. [Reference numerals] (610) Signal repetition unit;(620) Interleaver;(630) Modulation unit;(640) Phase rotation unit;(650) Transmitting unit

Abstract translation: 公开了一种用于无线LAN中的OFDM传输的方法和装置。 根据一个实施例的用于无线LAN中的OFDM传输的方法和装置包括：信号中继器，通过块重复编码信号，一起输出编码信号和重复信号; 交织器交织编码信号和重复信号并输出​​交错信号; 调制所述交错信号并输出​​调制符号的调制器; 以及改变调制符号的相位的相位旋转单元。 （610）信号重复单元;（620）交织器;（630）调制单元;（640）相位旋转单元;（650）发送单元

公开(公告)号：KR1020130139802A

公开(公告)日：2013-12-23

申请号：KR1020130067701

申请日：2013-06-13

Applicant: 한국전자통신연구원

Inventor： 이재승 ,  권형진 ,  정민호 ,  유희정 ,  이석규

IPC: H04B7/26

CPC classification number: H04W52/0216 ,  H04W74/006 ,  H04W84/12 ,  Y02D70/00 ,  Y02D70/142 ,  Y02D70/23 ,  H04W72/042 ,  H04W52/0225

Abstract: An operating mode change method of a wireless LAN system and a wireless LAN system are disclosed. An operating mode change method of a wireless LAN system according to one embodiment includes a step for transmitting an operating mode change request including at least one of information about traffic indication map (TIM) mode change to an access point (AP), request for change of a power parameter, and information about STA service type change; a step for receiving an operating mode change response frame including at least one of information of AID reallocated, power save parameter changed, and TIM mode allowed by the AP; and a step for changing at least one of the TIM mode and the power save parameter based on information included in the operating mode change response frame.

Abstract translation: 公开了一种无线LAN系统和无线LAN系统的操作模式改变方法。 根据一个实施例的无线LAN系统的操作模式改变方法包括将包括关于业务指示图（TIM）模式改变的信息中的至少一个的操作模式改变请求发送到接入点（AP）的步骤， 功率参数，以及有关STA服务类型变化的信息; 接收包括AID重新分配的信息，功率保存参数改变的信息和AP允许的TIM模式中的至少一个的操作模式改变响应帧的步骤; 以及基于包括在操作模式改变响应帧中的信息来改变TIM模式和省电参数中的至少一个的步骤。

公开(公告)号：KR1020130139797A

公开(公告)日：2013-12-23

申请号：KR1020130067266

申请日：2013-06-12

Applicant: 한국전자통신연구원

Inventor： 권형진 ,  이재승 ,  정민호 ,  유희정 ,  이석규

IPC: H04B7/26 ,  H04W74/08

CPC classification number: H04W52/0216 ,  H04W52/0219 ,  H04W84/12 ,  Y02D70/142 ,  H04W72/1278 ,  H04W28/14 ,  H04W72/042 ,  Y02D70/00

Abstract: The present invention relates to a technology by which an access point managing a network in a wireless local area network (WLAN) environment controls a transmission schedule of buffered data, and a terminal obtains information the transmission schedule. A device controlling a transmission schedule of buffered data in WLAN according to one embodiment makes terminals a group based on at least one of the terminals' service property and traffic property, allocates group information to wake each group of the grouped terminals in a different time, and transmits at least one of group DTIM (delivery traffic indication map) information and buffered data based on the allocated group information. [Reference numerals] (210) Grouping unit;(220) Group information allocation unit;(221) Transmission period determination unit;(223) Identification generator;(225) Group counter;(227) Offset counter;(230) Transmission unit;(240) Reception unit

Abstract translation: 本发明涉及一种管理无线局域网（WLAN）环境中的网络的接入点控制缓冲数据的传输调度的技术，并且终端获得传输时间表的信息。 根据一个实施例，控制WLAN中缓冲数据的传输调度的设备基于终端的服务特性和业务属性中的至少一个使终端成为一个组，分配组信息以在不同时间唤醒分组终端的每组， 并且基于所分配的组信息发送组DTIM（传送业务指示映射）信息和缓冲数据中的至少一个。 （210）分组单元;（220）组信息分配单元;（221）发送周期确定单元;（223）识别生成器;（225）组计数器;（227）偏移计数器;（230）发送单元; （240）接收单元

公开(公告)号：KR1020130139791A

公开(公告)日：2013-12-23

申请号：KR1020130067119

申请日：2013-06-12

Applicant: 한국전자통신연구원

Inventor： 권형진 ,  이재승 ,  정민호 ,  유희정 ,  이석규

IPC: H04W74/08 ,  H04W48/14

CPC classification number: H04W74/002 ,  H04W48/14

Abstract: The present invention relates to a terminal requesting and obtaining information related to channel access and a device providing information related to channel access in wireless local area network (WLAN). A terminal requesting and obtaining information related to channel access in WLAN according to one embodiment checks the reception of a beacon during a set beacon interval, transmits a group and slot information request signal when the beacon has not received, and receives a group and slot information request signal as a response to the group and slot information request signal from an access point. [Reference numerals] (210) Receiving unit;(220) Confirmation part;(230) Transmitting unit;(240) Access unit

Abstract translation: 本发明涉及请求和获取与频道接入相关的信息的终端，以及提供与无线局域网（WLAN）中的信道接入有关的信息的设备。 根据一个实施例，请求和获得与WLAN中的信道接入相关的信息的终端在设置的信标间隔期间检查信标的接收，当信标尚未接收时发送组和时隙信息请求信号，并且接收组和时隙信息 作为对来自接入点的组和时隙信息请求信号的响应的请求信号。 （附图标记）（210）接收单元;（220）确认部;（230）发送单元;（240）接入单元

公开(公告)号：KR1020130139790A

公开(公告)日：2013-12-23

申请号：KR1020130067115

申请日：2013-06-12

Applicant: 한국전자통신연구원

Inventor： 유희정 ,  정민호 ,  이재승 ,  권형진 ,  이석규

IPC: H04B7/26

CPC classification number: H04W72/0453 ,  H04L41/0803 ,  H04W72/048 ,  H04W84/12 ,  H04W72/042 ,  H04W28/10 ,  H04W72/0446 ,  H04W72/082

Abstract: Disclosed are a communication method and a communication device of a wireless LAN system supporting multiple bandwidths. A communication method of a wide-area wireless LAN system according to one embodiment of the present invention includes the following steps: a step wherein a communication device of a network supporting multiple bandwidths generates a base frame based on either a first bandwidth, which has the lowest signal-to-noise ratio among predetermined bandwidths, or a second bandwidth which is two times wider than the first bandwidth; a step wherein the communication device constructs a duplication mode frame based on the base frame; and a step wherein the communication device transmits the duplication mode frame through multiple bands.

Abstract translation: 公开了支持多个带宽的无线LAN系统的通信方法和通信装置。 根据本发明的一个实施例的广域无线LAN系统的通信方法包括以下步骤：其中支持多个带宽的网络的通信设备基于第一带宽生成基本帧，所述第一带宽具有 预定带宽之间的最低信噪比，或比第一带宽宽两倍的第二带宽; 其中所述通信设备基于所述基本帧构建复制模式帧; 以及通信装置通过多个频带发送复制模式帧的步骤。

公开(公告)号：KR1020130125296A

公开(公告)日：2013-11-18

申请号：KR1020130041908

申请日：2013-04-16

Applicant: 한국전자통신연구원

Inventor： 이재승 ,  정민호 ,  권형진 ,  유희정 ,  이석규

IPC: H04W48/16

CPC classification number: H04W48/16 ,  H04W84/12

Abstract: The purpose of the present invention is to provide an effective scanning method providing a speed faster than the passive scanning by performing active scanning using a short probe response frame including minimum information required for association in a radio local area network, and to reduce overhead in the active scanning.

Abstract translation: 本发明的目的是提供一种有效的扫描方法，其通过使用包括无线电局域网中的关联所需的最小信息的短探测响应帧进行主动扫描来提供比被动扫描更快的速度，并且减少 主动扫描

公开(公告)号：KR1020130041749A

公开(公告)日：2013-04-25

申请号：KR1020120114843

申请日：2012-10-16

Applicant: 한국전자통신연구원

Inventor： 유희정 ,  정민호 ,  이석규

IPC: H04B7/26 ,  H04W84/12

CPC classification number: H04L67/10 ,  H04W48/08 ,  H04W48/10 ,  H04W72/042 ,  H04W4/08 ,  H04W72/0446 ,  H04W72/121

Abstract: PURPOSE: A data transceiver and a method thereof are provided to transmit and receive massive data with a plurality of terminals by maintaining service quality in a new frequency band. CONSTITUTION: A reception unit(710) receives terminal information from terminals through a new frequency band for transceiving data between an AP(Access Point) and terminals. A confirmation unit(720) confirms the terminal information. The confirmation unit groups the terminals as terminal groups by using the terminal information. The confirmation unit confirms virtual APs corresponding to the terminal groups in the AP. A transmission unit(730) transmits beacon frames of the virtual APs to the terminals included in the terminal groups. [Reference numerals] (710) Reception unit; (720) Confirmation unit; (730) Transmission unit;

Abstract translation: 目的：提供数据收发器及其方法，通过维持新频带的服务质量，通过多个终端发送和接收海量数据。 构成：接收单元（710）通过新的频带从终端接收终端信息，用于在AP（接入点）和终端之间收发数据。 确认单元（720）确认终端信息。 确认单元使用终端信息将终端分组为终端组。 确认单元确认与AP中的终端组对应的虚拟AP。 传输单元（730）将虚拟AP的信标帧发送到终端组中包括的终端。 （附图标记）（710）接收单元; （720）确认单位; （730）传输单元;

公开(公告)号：KR1020120127838A

公开(公告)日：2012-11-26

申请号：KR1020110045582

申请日：2011-05-16

Applicant: 한국전자통신연구원

Inventor： 김지훈 ,  유희정 ,  강헌식 ,  이석규

IPC: H04B7/26 ,  H04W84/12

CPC classification number: H04L25/0224 ,  H04L25/0204 ,  H04W84/12

Abstract: PURPOSE: A channel estimation method and apparatus thereof are provided to promote a channel estimation performance using an L-LTF(Legacy-Long Training Field) and an HT-LTF(High Throughput Long Training Field) at the same time. CONSTITUTION: A reception unit(505) receives reference signals(201,202,203). A first estimation unit(510) acquires estimation values of a channel based on the reference signals. A second estimation unit(520) processes DFE(Decision Feedback Equalization) based on the first estimation value and the reference signal. The second estimation unit acquires a second estimation value. An update unit(530) acquires a first update value using the weighted average of the first and the second estimation value. [Reference numerals] (505) Reception unit; (510) First estimation unit; (520) Second estimation unit; (530) Update unit

Abstract translation: 目的：提供一种信道估计方法及其装置，用于同时使用L-LTF（Legacy-Long Training Field）和HT-LTF（High Throughput Long Training Field）来提升信道估计性能。 构成：接收单元（505）接收参考信号（201,202,203）。 第一估计单元（510）基于参考信号获取信道的估计值。 第二估计单元（520）基于第一估计值和参考信号来处理DFE（判决反馈均衡）。 第二估计单元获取第二估计值。 更新单元（530）使用第一和第二估计值的加权平均来获取第一更新值。 （附图标记）（505）接收单元; （510）第一估计单元; （520）第二估计单元; （530）更新单元

公开(公告)号：KR1020120127833A

公开(公告)日：2012-11-26

申请号：KR1020110045577

申请日：2011-05-16

Applicant: 한국전자통신연구원

Inventor： 유희정 ,  강헌식 ,  이석규

IPC: H04B7/04 ,  H04B7/26 ,  H04W84/12 ,  H04W74/08

CPC classification number: H04W72/082 ,  H04B7/0617 ,  H04L25/0242 ,  H04B7/043 ,  H04L25/0224 ,  H04W74/08

Abstract: PURPOSE: A method and apparatus for transmitting frame by avoiding interference in a WLAN(Wireless Local Area Network) system are provided to transmit and receive frames using a channel without generating interference for a station by transmitting a data frame based on an MIMO(Multiple Input Multiple Output) transmission method. CONSTITUTION: An AP(Access Point)(311) transmits a data frame to an STA(STAtion)(312) by accessing to a channel. The AP and the STA transmits and receives the data frame using each single antenna. The transmission beam vector of an STA1(321) and the reception beam vector of an STA2(322) are set, the data frame of the transmission and reception between the AP which occupies the channel and the STA coexists with the data frame of the transmission and reception between the STA1 and the STA2.

Abstract translation: 目的：提供一种通过避免WLAN（无线局域网）系统中的干扰来发送帧的方法和装置，用于使用信道发送和接收帧，而不会通过基于MIMO（多输入）发送数据帧而对站产生干扰 多输出）传输方式。 构成：AP（接入点）（311）通过访问信道将数据帧发送到STA（STAtion）（312）。 AP和STA使用每个单个天线发送和接收数据帧。 设置STA1（321）的发送波束矢量和STA2（322）的接收波束矢量，占用信道的AP与STA与传输的数据帧共存的发送和接收的数据帧 以及STA1和STA2之间的接收。