公开(公告)号：US20170202018A1

公开(公告)日：2017-07-13

申请号：US15469558

申请日：2017-03-26

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jae Sun CHA ,  Eunkyung KIM ,  Jae Joon PARK ,  Seung-Kwon BAEK ,  Pyeong Jung SONG ,  Chanho YOON ,  Sung Cheol CHANG

IPC: H04W74/08 ,  H04W16/14

CPC classification number: H04W74/08 ,  H04W16/14 ,  H04W74/0816 ,  H04W88/08

Abstract: Disclosed are a base station and a channel access method performing a channel access in a unlicensed band. The channel access method includes: performing channel sensing at least once on a channel of the unlicensed band in a channel sensing period of a frame; and broadcasting a reservation signal for the channel when the channel is empty.

公开(公告)号：US20160330678A1

公开(公告)日：2016-11-10

申请号：US15148108

申请日：2016-05-06

Applicant: Electronics and Telecommunications Research Institute

Inventor： Chanho YOON ,  Young Jo KO ,  Eunkyung KIM ,  Seung-Kwon BAEK

IPC: H04W48/16 ,  H04W74/00 ,  H04W72/04 ,  H04W8/00 ,  H04W16/14

CPC classification number: H04W74/006 ,  H04L5/0007 ,  H04L5/001 ,  H04L5/0051 ,  H04W16/14 ,  H04W48/12 ,  H04W84/045

Abstract: Disclosed is a method for a base station to transmit a discovery reference signal (DRS) through a channel of an unlicensed band. The base station attempts a first access to the channel of the unlicensed band so as to transmit a first DRS in a first DRS measurement timing configuration (DMTC) period. When the first access fails, the base station attempts a second access to the channel of the unlicensed band with a shorter predetermined period than the first DMTC period so as to transmit a second DRS in the first DMTC period.

Abstract translation: 公开了一种用于基站通过未许可频带的信道发送发现参考信号（DRS）的方法。 基站尝试对未许可频带的信道的第一次接入，以便在第一DRS测量定时配置（DMTC）周期中发送第一DRS。 当第一接入失败时，基站以比第一DMTC周期更短的预定周期尝试第二次接入非许可频带的信道，以便在第一DMTC周期中发送第二DRS。

公开(公告)号：US20150131577A1

公开(公告)日：2015-05-14

申请号：US14535676

申请日：2014-11-07

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Eunkyung KIM ,  Jae Sun CHA ,  Jae Joon PARK ,  Hyun LEE ,  Kwang Jae LIM ,  Sung Cheol CHANG

IPC: H04B7/02 ,  H04W72/04 ,  H04W24/02

CPC classification number: H04B7/024 ,  H04B7/0617 ,  H04B7/0619

Abstract: A method of providing cooperative communication to a terminal through a plurality of base stations is provided. A plurality of base stations each transmit a midamble to a terminal, and the terminal measures a channel through a received midamble. The terminal transmits information about the measured channel to at least one of the plurality of base stations.

Abstract translation: 提供了一种通过多个基站向终端提供协作通信的方法。 多个基站各自向终端发送中间码，并且终端通过接收到的中间码测量信道。 终端将关于所测量的信道的信息发送到多个基站中的至少一个。

公开(公告)号：US20150045033A1

公开(公告)日：2015-02-12

申请号：US14455399

申请日：2014-08-08

Applicant: Electronics and Telecommunications Research Institute

Inventor： Eunkyung KIM ,  Jae Sun CHA ,  Jae Joon PARK ,  Hyun LEE ,  Kwang Jae LIM ,  Sung Cheol CHANG

IPC: H04B7/155 ,  H04W36/38

CPC classification number: H04B7/15507 ,  H04W36/00 ,  H04W88/04

Abstract: A data relay method includes receiving a relay request from a BS, and when the relay request is accepted, relaying data between the BS and at least one external terminal, or the data relay method includes determining relaying between a first terminal among a plurality of terminals, and other remaining terminals excluding the first terminal among the plurality of terminals, and relaying data between the first terminal and the other remaining terminals.

Abstract translation: 数据中继方法包括从BS接收中继请求，当接收到中继请求时，BS与至少一个外部终端之间的中继数据或数据中继方法包括：确定多个终端中的第一终端之间的中继 ，以及在多个终端之中除了第一终端之外的其他剩余终端，并且在第一终端和其他剩余终端之间中继数据。

公开(公告)号：US20240089809A1

公开(公告)日：2024-03-14

申请号：US18518863

申请日：2023-11-24

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Hyun Seo PARK ,  Yun Joo KIM ,  Eunkyung KIM ,  Tae Joong KIM ,  An Seok LEE ,  Yu Ro LEE ,  Heesoo LEE

IPC: H04W36/00 ,  H04W36/08

CPC classification number: H04W36/0058 ,  H04W36/08

Abstract: A handover method of a first terminal in a wireless communication system may comprise: transmitting a first measurement report message to a first cell that is a primary cell (PCell); receiving, from the first cell, one or more first configuration messages for one or more target cells determined according to the first measurement report message; adding each of the one or more target cells as a candidate PCell based on the one or more first configuration messages; and performing data transmission and reception with at least one cell among the first cell and the one or more candidate PCells.

公开(公告)号：US20220150971A1

公开(公告)日：2022-05-12

申请号：US17586638

申请日：2022-01-27

Applicant: Electronics and Telecommunications Research Institute

Inventor： Eunkyung KIM ,  Jae Sun CHA ,  Chanho YOON ,  Seung-Kwon BAEK ,  Jae Joon PARK ,  Kwang Jae LIM ,  Sung Cheol CHANG

IPC: H04W74/08

Abstract: Provided is a method for transmitting, by a transmitter, a first data having periodicity through a channel of an unlicensed band:
The transmitter adjusts at least one of transmission timing of the first data and clear channel assessment (CCA) timing for the channel to occupy the channel. The transmitter determines whether the channel may be occupied by performing a CCA on the channel at the CCA timing. The transmitter transmits the first data through the channel at the transmission timing of the first data, when it is determined that the channel may be occupied.

公开(公告)号：US20170142743A1

公开(公告)日：2017-05-18

申请号：US15317098

申请日：2016-04-29

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Chanho YOON ,  Young Jo KO ,  Seung-Kwon BAEK ,  Eunkyung KIM

IPC: H04W72/12 ,  H04L27/26 ,  H04W28/26 ,  H04W72/04 ,  H04L5/00

CPC classification number: H04W72/1215 ,  H04L1/00 ,  H04L5/00 ,  H04L5/0048 ,  H04L27/26 ,  H04L27/2613 ,  H04W28/26 ,  H04W56/00 ,  H04W72/0446 ,  H04W74/0808 ,  H04W84/04

Abstract: There is provided a method for transmitting, by a transmitter, a signal through an unlicensed band channel. The transmitter transmits an initial signal through the unlicensed band channel to preoccupy the unlicensed band channel when the unlicensed band channel is in an idle status. The transmitter includes a first partial subframe transmitted after the initial signal in a frame burst depending to transmission timing of the initial signal. Further, the transmitter transmits the frame burst through the unlicensed band channel.

公开(公告)号：US20170048718A1

公开(公告)日：2017-02-16

申请号：US15236371

申请日：2016-08-12

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Eunkyung KIM ,  Young Jo KO ,  Sung-Hyun MOON ,  Seung-Kwon BAEK ,  Wooram SHIN ,  Chanho YOON

IPC: H04W16/14 ,  H04W48/16 ,  H04L1/18 ,  H04W56/00

CPC classification number: H04L1/1861 ,  H04W48/16 ,  H04W56/0005

Abstract: An apparatus for receiving a signal through an unlicensed band includes: a processor, a memory, and a radio frequency unit, wherein the processor executes a program stored in the memory to perform: receiving a secondary synchronization signal (SSS) in at least one remaining subframe except a subframe 0 or a subframe 5 of a plurality of subframes included in a discovery signal measurement timing configuration (DMTC), and detecting the SSS by using a subframe number of the subframe 0 or the subframe 5.

Abstract translation: 一种用于通过非许可频带接收信号的装置包括：处理器，存储器和射频单元，其中处理器执行存储在存储器中的程序，以执行：在至少剩余的一个中接收辅助同步信号（SSS） 除了包括在发现信号测量定时配置（DMTC）中的多个子帧的子帧0或子帧5之外，并且通过使用子帧0或子帧5的子帧号来检测SSS。

公开(公告)号：US20150326371A1

公开(公告)日：2015-11-12

申请号：US14707821

申请日：2015-05-08

Applicant: Electronics and Telecommunications Research Institute

Inventor： Seung-Kwon BAEK ,  Eunkyung KIM ,  Kwang Jae LIM ,  Jae Sun CHA ,  Sung Cheol CHANG

IPC: H04L5/00 ,  H04W16/32 ,  H04W48/12

CPC classification number: H04L5/00 ,  H04L5/0058 ,  H04W16/32 ,  H04W48/12 ,  H04W84/042

Abstract: A method and apparatus of receiving system information of an SeNB, including configuring connection to an MeNB and receiving a RRC Connection Reconfiguration message including the system information of a cell included in a SCG controlled by the SeNB, and a method of sharing frame offset between a MCG controlled by an MeNB and an SCG controlled by an SeNB connected to the MeNB through non-ideal backhaul, including measuring system frame number (SFN) and subframe number (SN) of a cell included in the SCG and sharing the frame offset, which is determined based on the SFN and the SN, with the MeNB or the SeNB are provided.

Abstract translation: 一种接收SeNB的系统信息的方法和装置，包括配置与MeNB的连接并接收包括由SeNB控制的SCG中包括的小区的系统信息的RRC连接重配置消息，以及共享帧间偏移的方法 由MeNB控制的MCG和由通过非理想回程连接到MeNB的SeNB控制的SCG，包括SCG中包括的小区的测量系统帧号（SFN）和子帧号（SN），并共享帧偏移，其中 基于SFN和SN确定，与MeNB或SeNB一起提供。

公开(公告)号：US20140334356A1

公开(公告)日：2014-11-13

申请号：US14274718

申请日：2014-05-10

Applicant: Electronics and Telecommunications Research Institute

Inventor： Eunkyung KIM ,  Jae Sun CHA ,  Jae Joon PARK ,  Hyun LEE ,  Kwang Jae LIM ,  Sung Cheol CHANG

IPC: H04W72/08 ,  H04L5/00

CPC classification number: H04W72/082 ,  H04L5/0007 ,  H04L5/0037 ,  H04L5/0053

Abstract: An exemplary embodiment of the present invention provides a resource management method performed by a coordinator for controlling interference between cells. The coordinator receives a channel state of a second base station neighboring a first base station from the first base station. The coordinator partitions a resource based on the channel state. The coordinator allocates the partitioned resource to the first base station. In addition, the coordinator transmits a first message requesting resource management to be set to the first base station. Here, the first message includes information on the allocated resource.

Abstract translation: 本发明的示例性实施例提供了一种由协调器执行的用于控制小区之间的干扰的资源管理方法。 协调器从第一基站接收与第一基站相邻的第二基站的信道状态。 协调器根据信道状态对资源进行分区。 协调器将分区资源分配给第一个基站。 此外，协调器发送请求资源管理的第一消息以设置到第一基站。 这里，第一消息包括关于分配的资源的信息。