公开(公告)号：US10306557B2

公开(公告)日：2019-05-28

申请号：US15823109

申请日：2017-11-27

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 ,  H04W84/12

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：US10136339B2

公开(公告)日：2018-11-20

申请号：US14917924

申请日：2014-09-10

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jae Seung Lee ,  Hyoung Jin Kwon ,  Sok Kyu Lee ,  Min Ho Cheong

IPC: H04W72/04 ,  H04W16/32 ,  H04W40/24 ,  H04W52/02 ,  H04W88/08 ,  H04W74/00 ,  H04W84/12 ,  H04W88/04

Abstract: An operating method of an access point (AP) and an operating method of a relay are disclosed in which the AP may determine whether to associate with the relay based on at least one of first information indicating whether use of an overlapping channel is restricted, second information indicating whether an operation using a non-overlapping channel is supported by the relay, and third information indicating whether use of a channel identical to a channel used by the AP is requested.

公开(公告)号：US10136287B2

公开(公告)日：2018-11-20

申请号：US15206420

申请日：2016-07-11

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jae Seung Lee ,  Moon Sik Lee ,  Young Hoon Kim ,  Hoo Sung Lee ,  Jae Woo Park ,  Gyung Chul Shin ,  Ik Jae Chun ,  Jee Yon Choi ,  Dong Seung Kwon

IPC: H04W4/80 ,  H04W56/00 ,  H04B7/0413 ,  H04B5/00 ,  H04L12/40 ,  H04L29/06 ,  H04L29/08 ,  H04L12/70 ,  H04L1/00

Abstract: A method and apparatus for close-proximity communication. The close-proximity communication method performed by a transmitter includes generating a physical layer (PHY) frame including a PHY preamble, a frame header, and a payload field, and transmitting the generated PHY frame to a receiver, in which the frame header may include a media access control (MAC) header, a header check sequence (HCS), and a Reed-Solomon (RS) parity bit.

公开(公告)号：US10051625B2

公开(公告)日：2018-08-14

申请号：US14406068

申请日：2013-06-13

Applicant: Electronics and Telecommunications Research Institute

Inventor： Hee Jung Yu ,  Min Ho Cheong ,  Jae Seung Lee ,  Hyoung Jin Kwon ,  Sok Kyu Lee

IPC: H04W72/04 ,  H04L12/24 ,  H04W84/12

Abstract: Provided is an apparatus and method for communication in a wireless local area network (LAN) system supporting a multi-bandwidth in which a communication apparatus supporting a multi-bandwidth includes generating a base frame based on at least one of a first bandwidth having the lowest signal-to-noise ratio (SNR) among predetermined bandwidths and a second bandwidth that is two times greater than the first bandwidth, configuring a duplication mode frame based on the base frame, and transmitting the duplication mode frame through a plurality of bands.

公开(公告)号：US09906277B2

公开(公告)日：2018-02-27

申请号：US15462370

申请日：2017-03-17

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jee Yon Choi ,  Jae Woo Park ,  Yu Ro Lee ,  Jae Seung Lee ,  Il Gyu Kim ,  Seung Chan Bang

IPC: H04B7/024 ,  H04B7/0408 ,  H04B7/0456

CPC classification number: H04B7/024 ,  H04B7/0408 ,  H04B7/0456 ,  H04W74/0816

Abstract: Disclosed is a protocol for transmitting data through cooperation between access points in an overlapped basic service set (OBSS) environment. A cooperative beamforming communication method may include negotiating, by a first access point, a cooperative transmit beamforming with a second access point having an OBSS area with the first access point; transmitting, by the first access point, a clear-to-send (CTS) to the second access point; and performing, by the first access point, the cooperative transmit beamforming with the second access point during a cooperative transmit beamforming duration determined through the negotiation after a predetermined time interval is elapsed, when transmission of the CTS is completed.

公开(公告)号：US09794929B2

公开(公告)日：2017-10-17

申请号：US14438184

申请日：2013-10-24

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Min Ho Cheong ,  Hyoung Jin Kwon ,  Jae Seung Lee ,  Jae woo Park ,  Sok Kyu Lee

IPC: H04W72/04 ,  H04W56/00 ,  H04W84/12 ,  H04W74/00

CPC classification number: H04W72/044 ,  H04W56/0015 ,  H04W74/006 ,  H04W84/12

Abstract: Provided is a method and apparatus for allocating resources in a wireless local area network (WLAN) system, the method including determining a restricted access bandwidth (RAB) interval based on at least a bandwidth or a partial bandwidth among a plurality of bandwidths, and setting a restricted access window (RAW) of a time domain based on the RAB interval.

公开(公告)号：US09781741B2

公开(公告)日：2017-10-03

申请号：US14409456

申请日：2013-06-19

Applicant: Electronics and Telecommunications Research Institute

Inventor： Hyoung Jin Kwon ,  Jae Seung Lee ,  Min Ho Cheong ,  Hee Jung Yu ,  Sok Kyu Lee

IPC: H04B7/00 ,  H04W72/12 ,  H04W72/04 ,  H04W84/12 ,  H04W74/04

CPC classification number: H04W72/1289 ,  H04W72/0446 ,  H04W74/04 ,  H04W84/12

Abstract: An apparatus and a method of controlling slot-based channel access by an access point (AP) to manage a network in a wireless local area network (WLAN) environment and a slot-based channel access terminal are disclosed. A slot-based channel access control apparatus of a WLAN system according to an exemplary embodiment determines one of each terminal and a group of terminals as a slot allocation target, allocates a slot defined in a beacon interval to the determined terminal or group to distinguish channel access time, and transmits a beacon including information on the allocated slot.

公开(公告)号：US09622218B2

公开(公告)日：2017-04-11

申请号：US14564032

申请日：2014-12-08

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jae Seung Lee ,  Hyoung Jin Kwon ,  Min Ho Cheong ,  Sok Kyu Lee

IPC: H04W72/04 ,  H04W84/12 ,  H04W28/16 ,  H04W24/02

CPC classification number: H04W72/04 ,  H04W24/02 ,  H04W28/16 ,  H04W84/12

Abstract: A method and system for managing a channel in a wireless local area network is disclosed. The method includes detecting adjacent access points, transmitting a resource allocation request frame including candidate channel information which the first access points wants to a master access point among the detected adjacent access points, receiving a resource allocation response frame which is a response with respect to the resource allocation request frame from the master access point, and configuring the BSS based on channel related information included in the resource allocation response frame. Accordingly, performance of the wireless local area network can be improved.

公开(公告)号：US09602174B2

公开(公告)日：2017-03-21

申请号：US14681425

申请日：2015-04-08

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jee Yon Choi ,  Jae Woo Park ,  Yu Ro Lee ,  Jae Seung Lee ,  Il Gyu Kim ,  Seung Chan Bang

IPC: H04B7/024 ,  H04B7/02 ,  H04W74/08

CPC classification number: H04B7/024 ,  H04B7/0408 ,  H04B7/0456 ,  H04W74/0816

Abstract: A method for cooperative beamforming communication, is described including negotiating, at a first access point, a cooperative transmit beamforming with a second access point having an overlapped basic service set (OBSS) area with the first access point, and transmitting, from the first access point, a clear-to-send (CTS) signal to the second access point. The method, upon detecting at the first access point a completion of transmission of the CTS signal, performs at the first access point the cooperative transmit beamforming with the second access point during a time duration of the cooperative transmit beamforming and after a predetermined time interval has elapsed.

公开(公告)号：US09516592B2

公开(公告)日：2016-12-06

申请号：US14407385

申请日：2013-06-13

Applicant: Electronics and Telecommunications Research Institute

Inventor： Hyoung Jin Kwon ,  Jae Seung Lee ,  Min Ho Cheong ,  Hee Jung Yu ,  Sok Kyu Lee

IPC: H04W52/02 ,  H04W84/12

CPC classification number: H04W52/0216 ,  H04W52/0219 ,  H04W84/12 ,  Y02D70/142

Abstract: Disclosed is a technology that enables an access point, configured to manage a network, to control a transmission schedule of buffered data and enables a terminal to obtain information associated with the transmission schedule in a wireless local area network (WLAN) environment. An apparatus for controlling a transmission schedule of buffered data in a WLAN according to an embodiment may group terminals based on at least one of a service characteristic and a traffic characteristic of each of the terminals, assign group information to each of the grouped groups to wake up in a different time, and transmit at least one of delivery traffic indication map (DTIM) information and the buffered data based on the assigned group information.

Abstract translation: 公开了一种技术，其使能被配置为管理网络的接入点来控制缓冲数据的传输调度并使得终端能够在无线局域网（WLAN）环境中获得与传输调度相关联的信息。 根据实施例的用于控制WLAN中的缓冲数据的传输调度的装置可以基于每个终端的服务特性和业务特性中的至少一个来对终端进行分组，将组信息分配给每个分组组以唤醒 并且基于所分配的组信息发送传送业务指示映射（DTIM）信息和缓冲数据中的至少一个。