公开(公告)号：US20190394804A1

公开(公告)日：2019-12-26

申请号：US16537365

申请日：2019-08-09

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：US20190261406A1

公开(公告)日：2019-08-22

申请号：US16277228

申请日：2019-02-15

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

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

IPC: H04W72/12 ,  H04W72/04 ,  H04W76/27 ,  H04L27/26

Abstract: An operation method of a terminal in a communication system includes receiving bandwidth part (BWP) change information from a base station in a BWP i; changing an operation BWP of the terminal from the BWP i to a BWP j even when a transmission and reception procedure of first data in the BWP i is not completed at a BWP changing point indicated by the BWP change information; and performing a data transmission and reception procedure of second data in the BWP j, wherein the BWP i and the BWP j are different BWPs, and i and j are different integers.

公开(公告)号：US20190261388A1

公开(公告)日：2019-08-22

申请号：US16401491

申请日：2019-05-02

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

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

IPC: H04W72/12 ,  H04W84/04 ,  H04L27/26 ,  H04L5/00 ,  H04L1/00 ,  H04W72/04 ,  H04W56/00 ,  H04W28/26

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：US20160302226A1

公开(公告)日：2016-10-13

申请号：US15094864

申请日：2016-04-08

Applicant: Electronics and Telecommunications Research Institute

Inventor： Eunkyung KIM ,  Chanho YOON ,  Seung-Kwon BAEK ,  Wooram SHIN ,  Kwang Jae LIM ,  Young Jo KO

IPC: H04W72/14 ,  H04W72/12 ,  H04W72/04

Abstract: A method and an apparatus for allocating uplink resources includes transmitting an uplink grant (UL Grant) for an unlicensed component carrier (UCC) to a plurality of terminals, wherein the UL Grant for a first terminal among the plurality of terminals includes a resource allocation information in which a transmission timing of the uplink data of a second terminal among the plurality of terminals is considered.

Abstract translation: 一种用于分配上行链路资源的方法和装置包括向多个终端发送用于非许可分量载波（UCC）的上行链路许可（UL Grant），其中，所述多个终端中的第一终端的UL授权包括资源分配信息 考虑多个终端中的第二终端的上行链路数据的发送定时。

公开(公告)号：US20160227571A1

公开(公告)日：2016-08-04

申请号：US15012190

申请日：2016-02-01

Applicant: Electronics and Telecommunications Research Institute

Inventor： Seung-Kwon BAEK ,  Chanho YOON ,  Eunkyung KIM ,  Jae Sun CHA ,  Sung Cheol CHANG ,  Young Jo KO

IPC: H04W72/12 ,  H04W16/14

CPC classification number: H04W16/14 ,  H04L5/0053 ,  H04W24/02 ,  H04W36/0069 ,  H04W48/12 ,  H04W48/20 ,  H04W52/0206 ,  H04W74/0808 ,  H04W88/06

Abstract: There are provided a method and apparatus for transmitting a discovery reference signal (DRS) through transmitting the DRS to a user equipment through a channel of an unlicensed band, receiving measurement report for measurement performed based on the DRS from the user equipment, and scheduling the cell of the unlicensed band based on the measurement report and providing a service to the user equipment through the cell of the unlicensed band.

Abstract translation: 提供了一种用于通过通过非授权频带的信道将用户设备发送到用户设备来发送发现参考信号（DRS）的方法和装置，接收基于来自用户设备的DRS进行测量的测量报告，并且调度 基于测量报告的非许可频带的小区，并且通过非许可频带的小区向用户设备提供服务。

公开(公告)号：US20160219578A1

公开(公告)日：2016-07-28

申请号：US15009326

申请日：2016-01-28

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Kwang Jae LIM ,  Seokki KIM ,  Anseok LEE ,  Eunkyung KIM ,  Seung-Kwon BAEK

IPC: H04W72/04 ,  H04B7/04

CPC classification number: H04B7/0413 ,  H04B7/024 ,  H04B7/026 ,  H04B7/0452

Abstract: A target terminal in a mobile communication system transmits a first uplink cooperative MIMO signal in a first uplink subframe to a cooperating device selected from among a plurality of repeaters for relaying signals and a plurality of terminals except a target terminal for cooperative MIMO transmission and reception, and transmits a second uplink cooperative MIMO signal directly in a second uplink subframe to a base station. The cooperating device amplifies the first uplink cooperative MIMO signal and transmits an amplified first uplink cooperative MIMO signal in the second uplink subframe to the a base station.

Abstract translation: 移动通信系统中的目标终端将第一上行链路子帧中的第一上行链路协作MIMO信号发送到用于中继信号的多个中继器和除用于协作MIMO发送和接收的目标终端之外的多个终端所选择的协作装置， 并且在第二上行链路子帧中直接向基站发送第二上行协作MIMO信号。 协作装置放大第一上行协作MIMO信号，并将第二上行链路子帧中的放大的第一上行协作MIMO信号发送到基站。

公开(公告)号：US20160095114A1

公开(公告)日：2016-03-31

申请号：US14865968

申请日：2015-09-25

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: H04W72/04

CPC classification number: H04W74/0816

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.

Abstract translation: 提供了一种用于通过发送器发送具有通过非许可频带的信道的周期性的第一数据的方法：发送机调整第一数据的发送定时和用于信道占用的清除信道评估（CCA）定时中的至少一个 这个频道。 发射机通过在CCA定时在信道上执行CCA来确定信道是否可能被占用。 当确定可以占用信道时，发射机以第一数据的发送定时通过信道发送第一数据。

公开(公告)号：US20140140286A1

公开(公告)日：2014-05-22

申请号：US14073180

申请日：2013-11-06

Applicant: Electronics and Telecommunications Research Institute

Inventor： Eunkyung KIM ,  Anseok LEE ,  Wooram SHIN ,  Jae Sun CHA ,  Kwang Jae LIM

IPC: H04W76/02 ,  H04W8/00

CPC classification number: H04W76/14 ,  H04W8/005

Abstract: A method for a first terminal communicating with a base station to perform direct communication with a second terminal is provided. The first terminal determines first timing for transmitting or receiving a first signal to or from the base station. Next, the first terminal determines second timing for transmitting a second signal for terminal discovery to the second terminal. When the first timing and the second timing overlap, the first terminal then changes either the first timing or the second timing.

Abstract translation: 提供了一种用于与基站通信以与第二终端进行直接通信的第一终端的方法。 第一终端确定向基站发送或从基站接收第一信号的第一定时。 接下来，第一终端确定用于向第二终端发送用于终端发现的第二信号的第二定时。 当第一定时和第二定时重叠时，第一终端然后改变第一定时或第二定时。

公开(公告)号：US20220030476A1

公开(公告)日：2022-01-27

申请号：US17384703

申请日：2021-07-23

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

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：US20210007036A1

公开(公告)日：2021-01-07

申请号：US16916792

申请日：2020-06-30

Applicant: Electronics and Telecommunications Research Institute

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

IPC: H04W36/30 ,  H04W24/10 ,  H04W48/20 ,  H04W76/19 ,  H04W24/08 ,  H04B17/336 ,  H04W76/27

Abstract: An operation method of a terminal in a communication system, according to the present disclosure, may comprise performing measurement on a source base station and neighbor base stations, and identifying a state of a radio link established between the terminal and the source base station; predicting a probability of a handover failure based on the state of the radio link and a measurement result according to the measurement; when it is predicted that the handover is to fail, identifying whether a handover command message is received from the source base station; and when the handover command message is not received, performing cell selection for radio connection re-establishment.