公开(公告)号：US11722907B2

公开(公告)日：2023-08-08

申请号：US17318099

申请日：2021-05-12

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jung Sun Um ,  Bong-Su Kim ,  Igor Kim ,  Seung Keun Park

IPC: H04W16/14 ,  H04W48/02 ,  H04W72/0453 ,  H04W52/24 ,  H04W72/541

CPC classification number: H04W16/14 ,  H04W48/02 ,  H04W52/242 ,  H04W72/0453 ,  H04W72/541

Abstract: Provided is a method and apparatus for determining an operating condition for frequency coexistence and an operating condition determining method includes a method of calculating and transferring an inference-free available frequency and an output level to an existing radio station that operates and needs to be protected or a method of calculating a channel access parameter for sharing a frequency with a heterogeneous device, a network, or a system.

公开(公告)号：US11553426B2

公开(公告)日：2023-01-10

申请号：US17115404

申请日：2020-12-08

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  KOREA NATIONAL UNIVERSITY OF TRANSPORTATION INDUSTRY-ACADEMIC COOPERATION FOUNDATION

Inventor： Yong Ho Kim ,  Sung Hyun Hwang ,  Igor Kim ,  Seung Keun Park

IPC: H04W52/02 ,  H04W74/06 ,  H04W84/12 ,  H04W74/08 ,  H04W74/00

Abstract: Disclosed is a method for operating a communication node supporting a low power mode in a wireless LAN. A method for operating a station, which includes a PCR and a WURx, comprises the steps of: allowing the WURx, which operates in a wake-up state, to receive a wake-up packet from an access point; transitioning an operating state of the PCR from a sleep state to the wake-up state when the wake-up packet is received; allowing the PCR, which operates in the wake-up state, to receive a data frame from an access point; and allowing the PCR to transmit, to the access point, a response to the data frame.

公开(公告)号：US10897739B2

公开(公告)日：2021-01-19

申请号：US16327801

申请日：2017-08-23

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  KOREA NATIONAL UNIVERSITY OF TRANSPORTATION INDUSTRY-ACADEMIC COOPERATION FOUNDATION

Inventor： Yong Ho Kim ,  Sung Hyun Hwang ,  Igor Kim ,  Seung Keun Park

IPC: H04W4/00 ,  H04W52/02 ,  H04W74/06 ,  H04W84/12 ,  H04W74/08 ,  H04W74/00

Abstract: Disclosed is a method for operating a communication node supporting a low power mode in a wireless LAN. A method for operating a station, which includes a PCR and a WURx, comprises the steps of: allowing the WURx, which operates in a wake-up state, to receive a wake-up packet from an access point; transitioning an operating state of the PCR from a sleep state to the wake-up state when the wake-up packet is received; allowing the PCR, which operates in the wake-up state, to receive a data frame from an access point; and allowing the PCR to transmit, to the access point, a response to the data frame.

公开(公告)号：US10405372B2

公开(公告)日：2019-09-03

申请号：US15722492

申请日：2017-10-02

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jin Hyung Oh ,  Gwang Zeen Ko ,  Hyun Duk Kang ,  Igor Kim ,  Myung Sun Song

IPC: H04L1/18 ,  H04W80/02 ,  H04W28/06 ,  H04W72/00 ,  H04W84/12

Abstract: Provided are a frame transmission method performed in an access point (AP), a frame reception method performed in a terminal, and an AP. The frame transmission method performed in an AP includes acquiring a channel for transmitting a first data unit of a first terminal, when a data unit to be transmitted to at least one terminal other than the first terminal is in the AP, generating a physical layer convergence procedure (PLCP) protocol data unit (PPDU) including the first data unit and the data unit to be transmitted to the at least one terminal, and transmitting the PPDU to the first terminal and the at least one terminal. Accordingly, it is possible to improve the performance of a wireless local area network (WLAN).

公开(公告)号：US10154449B2

公开(公告)日：2018-12-11

申请号：US15529013

申请日：2015-11-20

Applicant: Electronics and Telecommunications Research Institute

Inventor： Hyun Duk Kang ,  Gwang Zeen Ko ,  Igor Kim ,  Myung Sun Song

IPC: H04W48/16 ,  H04W88/10 ,  H04W28/16 ,  H04W84/12

Abstract: The present invention relates to a method and a system for discovering an adjacent access point between multi-band wireless LAN access points, and to a method and a system for discovering an adjacent neighboring access point between access points in order to solve an interference problem between the access points in a wireless LAN using multi-bands.

公开(公告)号：US09385834B2

公开(公告)日：2016-07-05

申请号：US14157116

申请日：2014-01-16

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jinhyung Oh ,  Gwangzeen Ko ,  Igor Kim ,  Myung Sun Song

IPC: H04B7/02 ,  H04L1/02 ,  H04L1/00 ,  H04B7/04 ,  H04B7/08

CPC classification number: H04L1/0009 ,  H04B7/0456 ,  H04B7/086

Abstract: An interference alignment method using multiple antennas in a multi-cell overlapped environment, includes: when at least one transmission and reception ends having at least one or more antennas communicate with each other, establishing at least one or more channels from the transmission end to the reception end. Further, the interference alignment method includes designing a processing filter for a transmission signal transmitted from the transmission end to the reception ends; and designing a processing filter for a reception signal that is received by the reception end.

Abstract translation: 在多小区重叠环境中使用多个天线的干扰对准方法包括：当至少一个发送和接收结束时具有至少一个或多个天线彼此通信时，建立至少一个或多个信道从发射端至 接待端 此外，干扰对准方法包括设计从发送端发送到接收端的发送信号的处理过滤器; 以及设计用于由接收端接收的接收信号的处理滤波器。