公开(公告)号：US20160081088A1

公开(公告)日：2016-03-17

申请号：US14946508

申请日：2015-11-19

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jae Seung LEE ,  Sok-kyu LEE

IPC: H04W72/04

CPC classification number: H04W72/0446 ,  H04L45/00 ,  H04W8/22 ,  H04W16/32 ,  H04W84/12 ,  H04W84/18

Abstract: A method and apparatus for configuring mesh peer link and a method and apparatus for switching channel in wireless mesh network are provided. A method of configuring a mesh peer link in a wireless mesh network includes a first mesh station transmitting a mesh peering open frame to a second mesh station, and the first mesh station receiving a mesh peering confirm frame from the second mesh station in response to the mesh peering open frame, wherein the first mesh station and the second mesh station support a very high throughput (VHT), and wherein the mesh peering open frame and the mesh peering confirm frame comprise a VHT capability information element.

公开(公告)号：US20140010243A1

公开(公告)日：2014-01-09

申请号：US14027517

申请日：2013-09-16

Applicant: Electronics and Telecommunications Research Institute

Inventor： Hee-Jung YU ,  Taehyun JEON ,  Myung-Soon KIM ,  Eun-Young CHOI ,  Sok-kyu LEE ,  Deuk-Su LYU

IPC: H04L27/26

CPC classification number: H04W28/065 ,  H04L1/0041 ,  H04L1/0045 ,  H04L1/0059 ,  H04L1/0071 ,  H04L1/0618 ,  H04L5/003 ,  H04L5/0044 ,  H04L5/0048 ,  H04L27/2602 ,  H04L27/2613 ,  H04W84/12

Abstract: In the present invention, data generated from a source unit are distributed to at least one bandwidth; the data distributed to the respective bandwidths are encoded in order to perform an error correction; the encoded data are distributed to at least one antenna; a subcarrier is allocated to the data distributed to the respective antennas, and an inverse Fourier transform is performed; a short preamble and a first long preamble corresponding to the subcarrier are generated; a signal symbol is generated according to a data transmit mode; and a frame is generated by adding a second long preamble between the signal symbol and a data field for the purpose of estimating a channel of a subcarrier which is not used.

Abstract translation: 在本发明中，从源单元产生的数据被分配到至少一个带宽; 分配给相应带宽的数据被编码以便执行纠错; 编码数据被分配到至少一个天线; 对分配给各天线的数据分配副载波，进行逆傅立叶变换; 产生与副载波对应的短前导码和第一长前导码; 根据数据发送模式生成信号符号; 并且通过在信号符号和数据字段之间添加第二长前置码来产生帧，以便估计未被使用的子载波的信道。

公开(公告)号：US20130094488A1

公开(公告)日：2013-04-18

申请号：US13651311

申请日：2012-10-12

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jee Yon CHOI ,  Sok-kyu LEE

IPC: H04W84/12

CPC classification number: H04W16/28 ,  H04W84/12

Abstract: A channel sounding method in a wireless local area network (WLAN) system and an apparatus supporting the same are provided. A method of performing a sounding operation by an access point (AP) in a wireless local area network (WLAN) includes: generating a beamforming report (BR) poll frame including a sounding sequence; transmitting the BR poll frame to a station (STA); and selectively performing transmission beamforming on the station according to whether or not the BR frame is received from the station before a predetermined timeout. Transmission of an erroneous BR frame in case that a beam receiver fails to receive an null data packet announcement (NDPA) and an null data packet (NDP) is eliminated and a degradation of transmission efficiency is prevented.

Abstract translation: 提供了一种无线局域网（WLAN）系统中的信道探测方法及其支持装置。 一种在无线局域网（WLAN）中由接入点（AP）执行探测操作的方法包括：生成包括探测序列的波束形成报告（BR）轮询帧; 将BR轮询帧发送到站（STA）; 并且根据在预定的超时之前是否从站接收到BR帧，在站上选择性地执行发送波束形成。 在波束接收机不能接收到空数据分组通告（NDPA）并且消除零数据分组（NDP）的情况下发送错误的BR帧，并且防止传输效率的降低。