公开(公告)号：KR1020140042755A

公开(公告)日：2014-04-07

申请号：KR1020130116070

申请日：2013-09-30

Applicant: 한국전자통신연구원

Inventor： 이재승 ,  정민호 ,  권형진 ,  박재우 ,  이석규

IPC: H04W48/16

CPC classification number: H04W40/244 ,  H04W16/28 ,  H04W48/12 ,  H04W72/044 ,  H04W84/12

Abstract: A method and a device for discovering a sector in a wireless LAN system are provided. A sector discovery method of an AP in a wireless LAN system includes: a step of setting sector beacon sections for transmitting a sector beacon for any sector among sectors which is formed by spatially separating an access point (AP) and an omni-beacon section for transmitting an omnidirectional beacon; a step of transmitting a sector beacon for the one current sector among the sectors; a step of transmitting a transmission frame which has a mark showing that the transmission is sector transmission or a transmission frame which has a mark showing that the transmission is omnidirectional transmission to the current sector in a sector interval between the sector beacon sections; and a step for receiving the transmission frame which has the mark showing that the transmission is sector transmission and receiving a response frame which shows association from a terminal located in the current sector.

Abstract translation: 提供了一种用于发现无线LAN系统中的扇区的方法和设备。 无线LAN系统中的AP的扇区发现方法包括：设置扇区信标部分的步骤，用于在通过空间分离接入点（AP）和全向信标部分形成的扇区之间为任何扇区发送扇区信标， 发送全向信标; 为扇区中的一个当前扇区发送扇区信标的步骤; 发送具有表示发送是扇区发送的标记的传输帧的传输帧或在扇区信标部分之间的扇区间隔中具有表示传输是全向传输到当前扇区的标记的传输帧的步骤; 以及接收具有表示发送是扇区发送的标记的发送帧的步骤，并接收从位于当前扇区中的终端显示关联的响应帧。

公开(公告)号：KR1020140006736A

公开(公告)日：2014-01-16

申请号：KR1020130147178

申请日：2013-11-29

Applicant: 한국전자통신연구원

Inventor： 정광희 ,  윤국진 ,  이광순 ,  권형진 ,  임현정 ,  허남호 ,  이수인 ,  이윤진

IPC: H04N13/00 ,  H04N21/23

CPC classification number: H04N13/178 ,  H04N13/194

Abstract: The present invention relates to a non-real time stereoscopic video service method and an apparatus thereof. The non-real time stereoscopic video service method performed by a reception apparatus according to one embodiment of the present comprises the steps of: extracting a program association table from a received TS and analyzing the same; extracting a program map table corresponding to a program selected by a user from the program association table and analyzing the same; extracting a stereoscopic video service descriptor from the program map table and analyzing the same; generating frame and/or time information of an image to be reproduced according to the analysis of the stereoscopic video service descriptor; and reproducing an image by synchronizing a reference image and a supplementary image based on the generated frame and/or time information, wherein the step for generating the frame and/or time information of the image to be reproduced comprises: determining whether or not time stamp information regarding the image to be reproduced has been lost; and when it is determined that the time stamp information has been lost, generating the frame and/or time information based on time stamp information regarding a start of a stereoscopic video service included in the stereoscopic video service descriptor and information regarding access unit (AU) numbers of video images which have been transmitted so far after the stereoscopic video service was started. [Reference numerals] (AA) Start; (S210) Extract PAT from a Ts and analyze it; (S220) Extract PMT from the Ts and analyze it; (S230) Extract an SS-descriptor from the PMT and analyze it; (S240) Generate reproduction image frame/time information by using TimeStamp and/or FirstAUTimeStamp, LastAUNumber Tag; (S250) Reproduce a reference image and a supplementary image

Abstract translation: 本发明涉及非实时立体视频服务方法及其装置。 根据本发明的一个实施例的由接收装置执行的非实时立体视频服务方法包括以下步骤：从接收到的TS中提取节目关联表并对其进行分析; 从节目关联表提取与用户选择的节目相对应的节目映射表，并对其进行分析; 从节目映射表提取立体视频服务描述符并进行分析; 根据立体视频服务描述符的分析生成要再现的图像的帧和/或时间信息; 并且通过基于生成的帧和/或时间信息同步参考图像和补充图像来再现图像，其中用于生成要再现的图像的帧和/或时间信息的步骤包括：确定是否时间戳 关于要再现的图像的信息已经丢失; 并且当确定时间戳信息已经丢失时，基于包括在立体视频服务描述符中的立体视频服务的开始的时间标记信息和关于访问单元（AU）的信息来生成帧和/或时间信息， 在立体视频服务开始之后迄今已经发送的视频图像的数量。 （附图标记）（AA）开始; （S210）从Ts提取PAT并进行分析; （S220）从Ts提取PMT并进行分析; （S230）从PMT中提取SS描述符并对其进行分析; （S240）使用TimeStamp和/或FirstAUTimeStamp，LastAUNumber Tag生成再现图像帧/时间信息; （S250）重现参考图像和补充图像

公开(公告)号：KR101348276B1

公开(公告)日：2014-01-10

申请号：KR1020070043706

申请日：2007-05-04

Applicant: 한국전자통신연구원

Inventor： 조숙희 ,  권형진 ,  허남호 ,  김진웅 ,  이수인

IPC: H04N19/132 ,  H04N19/51 ,  H04N13/00

CPC classification number: H04N19/86 ,  H04N19/33 ,  H04N19/53 ,  H04N19/597 ,  H04N19/61

Abstract: 본 발명에서는 원래 영상의 정보를 사용하여 원래 영상의 해상도를 낮추는 경우보다 화질이 좋으면서도, 원래 영상을 그대로 압축하는 것보다 압축률을 향상시키는 방법 및 장치를 제공한다. 본 발명에 의한 다시점 동영상을 부호화 하는 방법은 현재 부호화하고자 하는 영상의 참조 영상에 대한 움직임 또는 변이 벡터를 계산하는 단계와, 상기 현재 영상과 상기 참조 영상의 화소값 차이인 잔여신호를 다운샘플링하여 해상도를 줄이고 부호화 하는 단계와, 상기 부호화된 잔여신호를 복호화하고 업샘플링하여 원래의 해상도로 복원하는 단계와, 상기 복원된 잔여신호의 블록과 상기 움직임 또는 변이 벡터에 따라 결정되는 상기 참조 영상의 블록을 합하여 상기 현재 영상을 복원하는 단계를 포함하는 것을 특징으로 한다.

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：KR101188956B1

公开(公告)日：2012-10-08

申请号：KR1020090075656

申请日：2009-08-17

Applicant: 한국전자통신연구원

Inventor： 김경표 ,  김용선 ,  홍승은 ,  권형진 ,  이우용

IPC: H04B7/04

Abstract: 송신 안테나 다중화 시스템에서 송신 안테나를 스위칭하는 송/수신 장치 및 방법을 제안한다. 본 발명의 실시예에 따른 송신 장치는 수신 장치로부터 공고 명령 프레임을 수신하면 상기 수신한 공고 명령 프레임에 포함된 송신 안테나 다중화 정보(TSD IE)를 확인하여 송신 안테나의 스위칭을 요청하는지 여부를 확인하는 공고 명령 프레임 판독부; 상기 수신한 공고 명령 프레임이 상기 송신 안테나의 스위칭을 요청하면 복수의 안테나들 중에서 선택하지 않았던 안테나를 송신 안테나로 선택하고, 상기 선택한 송신 안테나로 스위칭하는 안테나 스위칭부; 및 상기 TSD IE에 포함된 송신 안테나 정보를 상기 선택한 송신 안테나로 변경하고, 상기 변경된 TSD IE를 포함하는 응답 공고 명령 프레임을 생성해서 상기 수신 장치로 송신하는 공고 명령 프레임 생성부를 포함한다.
송신 안테나 다중화, TSD