公开(公告)号：US20150382234A1

公开(公告)日：2015-12-31

申请号：US14750556

申请日：2015-06-25

Applicant: Electronics and Telecommunications Research Institute

Inventor： Sung Jin YOO ,  Jung Sun UM ,  Byung Jang JEONG ,  Sung Hyun HWANG

IPC: H04W28/04 ,  H04W72/04 ,  H04W24/08

CPC classification number: H04W24/08 ,  H04L1/00 ,  H04L1/08 ,  H04W72/0453

Abstract: A wireless communication method may include performing, by a first system, channel monitoring of a first band, detecting a second system that uses the first band, determining whether the first system is to be used in preference to the second system, and allocating a radio resource of the first band to the first system based on whether the first system is to be used in preference to the second system.

Abstract translation: 无线通信方法可以包括由第一系统执行第一频带的信道监测，检测使用第一频带的第二系统，确定第一系统是​​否优先于第二系统使用，以及分配无线电 基于第一系统是​​否优先于第二系统使用第一频带的资源到第一系统。

公开(公告)号：US20240284491A1

公开(公告)日：2024-08-22

申请号：US18561197

申请日：2022-05-24

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Sung Hyun HWANG ,  Kyu Min KANG ,  Jae Cheol PARK ,  Jin Hyung OH ,  Dong Woo LIM ,  Su Na CHOI ,  Yong Ho KIM

IPC: H04W72/40 ,  H04W28/02 ,  H04W72/0446 ,  H04W74/0833 ,  H04W84/12

CPC classification number: H04W72/40 ,  H04W28/0252 ,  H04W72/0446 ,  H04W74/0833 ,  H04W84/12

Abstract: A method and a device for shard communication in a wireless LAN are disclosed. A method of a first STA comprises the steps of: receiving a first frame for allocation of a shared communication period from an AP; identifying the shared communication period on the basis of one or more fields included in the first frame; and performing shared communication with a second STA in the shared communication period, wherein the shared communication period is configured within a TXOP configured between the AP and a third STA.

公开(公告)号：US20230319737A1

公开(公告)日：2023-10-05

申请号：US18126622

申请日：2023-03-27

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jin Hyung OH ,  Kyu Min KANG ,  Jae Cheol PARK ,  Dong Woo LIM ,  Su Na CHOI ,  Sung Hyun HWANG

IPC: H04W52/48 ,  H04W52/24 ,  H04W52/22

CPC classification number: H04W52/48 ,  H04W52/242 ,  H04W52/22

Abstract: A power control method for reducing power consumption of a terminal during retransmission in a wireless communication system using spread spectrum may include: transmitting a response message corresponding to a request message received from a base station to the base station; determining whether an acknowledgement (ACK) message is received from the base station in response to the response message; after the ACK message is received, determining whether the response message is decoded by the base station on the basis of the ACK message; and when it is determined that the response message is not decoded by the base station, setting retransmission transmission power randomly.

公开(公告)号：US20230095120A1

公开(公告)日：2023-03-30

申请号：US17945255

申请日：2022-09-15

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Su Na CHOI ,  Kyu Min KANG ,  Jae Cheol PARK ,  Jin Hyung OH ,  Dong Woo LIM ,  Sung Hyun HWANG

IPC: G08G5/00 ,  H04L1/18

Abstract: A method of managing identification information of a drone may include: generating an access message, wherein the access message includes an identifier for the ground identification device, which is a transmitter, an identifier for a receiver, an execution function command for classifying and defining a function to be performed, a serial number for transmitting information sequentially and retransmitting the information when transmission fails, data size information for informing a size of data to be transmitted, and transmission data; and transmitting the access message to an integrated management system corresponding to the identifier for the receiver.

公开(公告)号：US20220322473A1

公开(公告)日：2022-10-06

申请号：US17626423

申请日：2020-07-10

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

Inventor： Sung Hyun HWANG ,  Kyu Min KANG ,  Jae Cheol PARK ,  Jin Hyung OH ,  Su Na CHOI ,  Yong Ho KIM ,  Yong Su GWAK

IPC: H04W76/15 ,  H04L1/16

Abstract: The present invention relates to a method for operating a first communication node in a wireless local area network (WLAN) supporting a multi-link operation, comprising the steps of: setting a first transmit window size of a first link for transmitting a plurality of frames to a second communication node; transmitting the plurality of frames through the first link; when the state of a channel detected through channel sensing in the second link is an idle state, setting a transmit opportunity (TXOP) in the channel; and when the transmit opportunity is set, performing an agreement with the second communication node on the size of a second transmit window for transmitting the plurality of frames. Therefore, it is possible to improve the performance of a communication system.

公开(公告)号：US20200275373A1

公开(公告)日：2020-08-27

申请号：US16612329

申请日：2018-05-08

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Sung Hyun HWANG ,  Seung Keun PARK ,  Yong Ho KIM

IPC: H04W52/02

Abstract: An operation method of a communication node for supporting a low power mode in a wireless LAN is disclosed. A method for operating an access point comprises: a step of transmitting a CTS frame to protect transmission of a wake-up packet, a step of transmitting the wake-up packet to wake up a station including PCR and WURx; and a step of transmitting a data frame to the station. Therefore, the performance of the communication system can be improved.

公开(公告)号：US20200015165A1

公开(公告)日：2020-01-09

申请号：US16506831

申请日：2019-07-09

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Sung Hyun HWANG ,  Kyu Min KANG ,  Sung Jin YOO ,  Su Na CHOI ,  Jae Cheol PARK ,  Yong Ho KIM

IPC: H04W52/02 ,  H04W76/27

Abstract: Disclosed are a low-power communication method and a low-power communication apparatus in a communication system. A low-power station may comprise a processor; a memory storing at least one instruction executable by the processor; a receiver for receiving a WUR PPDU according to the at least one instruction; and a transceiver for transmitting and receiving a legacy PPDU according to the at least one instruction, and the at least one instruction may be configured to cause the receiver to receive a WUR wake-up frame from the access point in an on-duration within a WUR duty cycle period; when the WUR wake-up frame is received, cause the processor to transmit a first signal requesting wake-up to the transceiver; and when the first signal is received, cause the transceiver to transition from a sleep state to a wake-up state at a TWT configured between the access point and the low-power station.

公开(公告)号：US20190327672A1

公开(公告)日：2019-10-24

申请号：US16341857

申请日：2017-10-12

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Sung Hyun HWANG ,  Igor KIM ,  Seung Keun PARK

IPC: H04W52/02 ,  H04L5/00 ,  H04L12/24 ,  H04W12/06

Abstract: Disclosed are a method and an apparatus for initial negotiation in a wireless LAN. An operating method of a station in a communication system comprises the steps of: generating a probe request frame including WUR capability information of the station which supports a WUR mode; transmitting the probe request frame; and receiving a probe response frame from an access point having received the probe request frame. Therefore, the performance of the communication system can be improved.

公开(公告)号：US20150117270A1

公开(公告)日：2015-04-30

申请号：US14520401

申请日：2014-10-22

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jung Sun UM ,  Byung Jang JEONG ,  Sung Hyun HWANG ,  Hoi Yoon JUNG ,  Jae Ick CHOI

IPC: H04L5/14 ,  H04W72/04 ,  H04L5/00

CPC classification number: H04L5/1461 ,  H04B7/2656 ,  H04L5/0007 ,  H04L5/0069 ,  H04L5/1469 ,  H04W72/0446

Abstract: Disclosed are a method and an apparatus for determining a Guard Period (GP) in a Time Division Duplexing (TDD) system. A communication method based on Time Division Duplexing (TDD) includes: determining, by a base station, a guard period based on information on a distance between user equipment and the base station; and performing, by the base station, downlink transmission to the user equipment based on the determined guard period, wherein the guard period is determined based on one of a default guard period mode, a reduced guard period mode, and a zero guard period mode, and the reduced guard period mode is a mode for setting a reduced guard period, which is shorter than the default guard period set based on the default guard period mode, and the zero guard period mode is a mode for setting a length of the guard period to 0.

Abstract translation: 公开了一种用于在时分双工（TDD）系统中确定保护周期（GP）的方法和装置。 基于时分双工（TDD）的通信方法包括：基站基于用户设备与基站之间的距离的信息确定保护周期; 并且基于所确定的保护周期，由所述基站对所述用户设备进行下行链路传输，其中，所述保护周期是基于默认保护周期模式，减小保护周期模式和零保护周期模式之一来确定的， 并且减小的保护周期模式是用于设置比基于默认保护时段模式设置的默认保护时段短的保护时段的模式，并且保护保护周期模式是用于设置保护时段的长度的模式 到0。