公开(公告)号：US20190312632A1

公开(公告)日：2019-10-10

申请号：US16450943

申请日：2019-06-24

Applicant: Electronics and Telecommunications Research Institute

Inventor： Kap Seok CHANG ,  Hyoung Jin KWON ,  Sung Geun JIN ,  Yong Sun KIM ,  Seung Eun HONG ,  Woo Yong LEE ,  Hyun Kyu CHUNG

IPC: H04B7/155 ,  H04W72/08 ,  H04W24/08 ,  H04W72/12

Abstract: Provided is an apparatus and method for wideband short-range wireless communication using a directional antenna in a millimeter wave band, and the method for wideband short-range wireless communication according to an embodiment may determine a first time interval and a second time interval for a cooperated data frame transfer based on a packet transmission time at each transmission from a source node to a destination node, transmit a frame to a relay node through an antenna pattern directed towards the relay node at a start point of the first time interval, and transmit the frame to the destination node through an antenna pattern directed towards the destination node after a predetermined period of time from a start point of the second time interval.

公开(公告)号：US20190254039A1

公开(公告)日：2019-08-15

申请号：US16396839

申请日：2019-04-29

Applicant: Electronics and Telecommunications Research Institute

Inventor： Hyoung Jin KWON ,  Jin Kyeong KIM ,  Yong Sun KIM ,  Kyeongpyo KIM ,  Seung Eun HONG ,  Woo Yong LEE

IPC: H04W72/08 ,  H04W72/04 ,  H04L25/20 ,  H04L12/801 ,  H04B1/707 ,  H04L12/26 ,  H04B7/155

CPC classification number: H04W72/08 ,  H04B1/707 ,  H04B7/155 ,  H04L25/20 ,  H04L43/50 ,  H04L47/10 ,  H04W72/0426

Abstract: Provided is an apparatus and method for transmitting and receiving data using multiple paths in a wireless communication system using a distributed Media Access Control (MAC). More particularly, provided is an apparatus and method for transmitting and receiving data that may select a path with a better channel status from multiple paths that include a direct path using a Line of Sight (LOS) and a relay path passing through a relay apparatus, in a wireless communication system that may transmit data via the LOS using a distributed MAC and a directional antenna.

公开(公告)号：US20190239161A1

公开(公告)日：2019-08-01

申请号：US16379629

申请日：2019-04-09

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jae Seung LEE ,  Hyoung Jin KWON ,  Min ho CHEONG ,  Hee Jung YU ,  Sok Kyu LEE

IPC: H04W52/02 ,  H04W74/00

Abstract: An operating mode change method of a wireless local area network (WLAN) system according to an exemplary embodiment includes transmitting, by a station (STA) to an access point (AP), an operating mode change request frame comprising at least one of information on a change of a traffic indication map (TIM) mode, a request for a change of a power save parameter, and information on a change of a service type of the STA, receiving, from the AP, an operating mode change response frame comprising at least one of a TIM mode allowed by the AP, a reallocated association identification (AID), and information on a changed power save parameter, and performing at least one of the change of the TIM mode and the change of the power save parameter based on the information included in the operating mode change

公开(公告)号：US20190104531A1

公开(公告)日：2019-04-04

申请号：US16191286

申请日：2018-11-14

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Hyoung Jin KWON ,  Sok Kyu LEE ,  Jae Seung LEE ,  Min Ho CHEONG

IPC: H04W72/12 ,  H04L27/26 ,  H04B7/0452 ,  H04L25/02 ,  H04L5/00 ,  H04W84/12 ,  H04B7/0417

CPC classification number: H04W72/121 ,  H04B7/0417 ,  H04B7/0452 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0037 ,  H04L5/0044 ,  H04L5/005 ,  H04L25/0204 ,  H04L25/0224 ,  H04L27/2613 ,  H04W72/1231 ,  H04W84/12

Abstract: Disclosed are a wireless communication method, and an access point and a station which perform the wireless communication method. A wireless communication method performed by an access point according to an embodiment may include performing channel sounding on a plurality of subchannels, identifying subchannels selected by stations among the subchannels, scheduling communications between the AP and the stations based on the selected subchannels, and transmitting a data frame to the stations through the subchannels based on a scheduling result.

公开(公告)号：US20180007713A1

公开(公告)日：2018-01-04

申请号：US15706085

申请日：2017-09-15

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Min Ho CHEONG ,  Hyoung Jin KWON ,  Jae Seung LEE ,  Jae Woo PARK ,  Sok Kyu LEE

IPC: H04W74/04 ,  H04B7/06 ,  H04B7/0408 ,  H04W48/16 ,  H04W74/08 ,  H04W84/12 ,  H04W16/28

CPC classification number: H04W74/04 ,  H04B7/0408 ,  H04B7/0617 ,  H04W16/28 ,  H04W48/16 ,  H04W74/08 ,  H04W84/12

Abstract: A channel access method and apparatus are disclosed. The channel access method by an access point (AP) having a sector antenna in a wireless local access network (WLAN), may include transmitting a sector beacon with respect to any one sector among a plurality of sectors, transmitting and receiving data with at least one station in any one sector during a pre-scheduled sector interval, sequentially performing transmission of the sector beacon and transmission and reception of the data with respect to remaining sectors of the plurality of sectors excluding the any one sector, transmitting an omni beacon with respect to all of the plurality of sectors, and transmitting and receiving data with respect to at least one station of the plurality of sectors during a pre-scheduled Basic Service Set (BSS) interval.

公开(公告)号：US20160197655A1

公开(公告)日：2016-07-07

申请号：US14916920

申请日：2014-09-05

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jae Seung LEE ,  Jin Hyung OH ,  Gwang Zeen KO ,  Hyun Duk KANG ,  Hyoung Jin KWON ,  Myung Sun SONG ,  Sok Kyu LEE ,  Min Ho CHEONG ,  Jae Ick CHOI

IPC: H04B7/02 ,  H04B7/06 ,  H04B7/04

CPC classification number: H04B7/024 ,  H04B7/0452 ,  H04B7/0617 ,  H04L1/00 ,  H04L1/1685 ,  H04W48/00 ,  H04W84/12 ,  H04W88/08

Abstract: Disclosed is a communication method using interference alignment in a wireless local area network (WLAN). An access point (AP) according to one embodiment may receive first channel information between a station associated with the AP and the AP and second channel information between the station and a neighboring AP to perform interference alignment in cooperation with the AP from the station, and perform interference alignment based on the first channel information and the second channel information.

Abstract translation: 公开了一种在无线局域网（WLAN）中使用干扰对准的通信方法。 根据一个实施例的接入点（AP）可以在与AP相关联的站与AP之间接收第一信道信息，以及站与相邻AP之间的第二信道信息，以与来自站的AP协作执行干扰对准，以及 基于第一信道信息和第二信道信息执行干扰对准。

公开(公告)号：US20160073433A1

公开(公告)日：2016-03-10

申请号：US14412669

申请日：2013-07-05

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Hyoung Jin KWON ,  Jae Seung LEE ,  Min Ho CHEONG ,  Hee Jung YU ,  Jae Woo PARK ,  Sok Kyu LEE

IPC: H04W74/08 ,  H04W72/04

CPC classification number: H04W74/0891 ,  H04W74/08 ,  H04W84/12 ,  H04W88/12

Abstract: Provided is slot use control apparatus and method, including an access point (AP) to control a slotted channel access of a station (STA) in a wireless local area network (WLAN) includes generating a synchronization (synch) frame including an identification value indicating an STA allocated to a slot, and broadcasting the generated synch frame when a channel is in an idle state at a start point of the slot.

Abstract translation: 提供了一种时隙使用控制装置和方法，其包括用于控制无线局域网（WLAN）中的站（STA）的时隙信道接入的接入点（AP），包括生成同步（同步）帧，所述同步（同步）帧包括指示 分配给时隙的STA，并且当在时隙的开始点处的信道处于空闲状态时，广播所生成的同步帧。

公开(公告)号：US20150372726A1

公开(公告)日：2015-12-24

申请号：US14748000

申请日：2015-06-23

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Min Ho CHEONG ,  Hyoung Jin KWON ,  Sok Kyu LEE ,  Jae Seung LEE

IPC: H04B7/04 ,  H04B15/00

CPC classification number: H04B7/0452 ,  H04B7/0617 ,  H04B7/0634 ,  H04B15/00

Abstract: Provided is an iterative interference alignment (IA) method and apparatus for performing a downlink multi-user multiple-input and multiple-output (DL MU-MIMO), including transmitting, to a user terminal, a transmission beamforming vector generated arbitrarily, receiving, from the user terminal, a reception beamforming vector calculated to minimize interference based on the transmission beamforming vector, and updating the transmission beamforming vector based on the reception beamforming vector, the iterative IA method may further include calculating a transmission beamforming vector space minimizing interference of an inter-basic service set based on the reception beamforming vector, calculating a transmission beamforming matrix minimizing interference of an intra-basic service set, based on the reception beamforming vector, and updating the transmission beamforming vector based on the transmission beamforming matrix and the transmission beamforming vector space.

Abstract translation: 提供了一种用于执行下行链路多用户多输入多输出（DL MU-MIMO）的迭代干扰对准（IA）方法和装置，包括：向用户终端发送任意生成的发送波束形成向量， 迭代IA方法还可以包括：计算发射波束形成向量空间，以使来自用户终端的干扰成为最小化的接收波束成形向量，并且基于接收波束形成向量来更新传输波束形成向量; 基于接收波束成形向量的基础间服务集合，基于接收波束成形向量计算最小化基内服务集合的干扰的发送波束成形矩阵，并且基于发送波束形成矩阵和发送波束成形来更新发送波束形成向量 向量空间。

公开(公告)号：US20150351001A1

公开(公告)日：2015-12-03

申请号：US14821854

申请日：2015-08-10

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Hyoung Jin KWON ,  Jin Kyeong KIM ,  Woo Yong LEE ,  Yong Sun KIM ,  Kyeongpyo KIM

IPC: H04W40/22 ,  H04L12/707 ,  H04B7/26

CPC classification number: H04W40/22 ,  H04B7/2606 ,  H04L45/00 ,  H04L45/22 ,  H04W40/02

Abstract: Methods for transmitting and receiving data of a station includes setting a direct route to a corresponding station and a relay route to a relay device, selecting one route as between the direct route and relay route, and transmitting and receiving data through the selected route. A non-transitory computer-readable storage medium may store a program including instructions to cause a computer to perform the method. The setting may be performed by a processor and the transmitting and receiving may be performed respectively by a transmitter and a receiver.

Abstract translation: 收发站数据的方法包括设置到相应站的直接路由和到中继设备的中继路由，选择直达路由和中继路由之间的一条路由，以及通过所选择的路由发送和接收数据。 非暂时的计算机可读存储介质可以存储包括使计算机执行该方法的指令的程序。 该设置可以由处理器执行，并且发送和接收可以由发送器和接收器分别执行。

公开(公告)号：US20150156794A1

公开(公告)日：2015-06-04

申请号：US14561043

申请日：2014-12-04

Applicant: Electronics and Telecommunications Research Institute

Inventor： Hyoung Jin KWON ,  Sok Kyu LEE ,  Jae Seung LEE ,  Min Ho CHEONG

IPC: H04W72/12 ,  H04L25/02

CPC classification number: H04W72/1231 ,  H04L1/00 ,  H04L25/0224 ,  H04W74/00 ,  H04W84/12

Abstract: Provided are channel sounding and scheduling methods for interference alignment in a wireless LAN. The sounding method includes transmitting a RTS frame, the RTS frame including an OIA candidate AP list that includes identification information of a plurality of access points, transmitting a CTS-pole frame for triggering transmission of a CTS frame to a second access point which is a first access point in the OIA candidate AP list, and receiving a CTS frame which is a response to the CTS-pole frame from the second access point. Therefore, communication performance of the wireless LAN can be improved.

Abstract translation: 提供了用于无线LAN中的干扰对准的信道探测和调度方法。 探测方法包括发送RTS帧，RTS帧包括包括多个接入点的识别信息的OIA候选AP列表，将用于触发CTS帧传输的CTS极帧发送到第二接入点，该第二接入点是 OIA候选AP列表中的第一接入点，以及从第二接入点接收作为对CTS极帧的响应的CTS帧。 因此，可以提高无线LAN的通信性能。