公开(公告)号：US10321335B2

公开(公告)日：2019-06-11

申请号：US15317843

申请日：2015-06-11

Applicant: LG ELECTRONICS INC.

Inventor： Daesung Hwang ,  Yunjung Yi ,  Joonkui Ahn

IPC: H04W16/32 ,  H04W72/08 ,  H04L12/24 ,  H04W76/10 ,  H04W88/02 ,  H04W88/06

Abstract: A method and user equipment (UE) are provided for switching to dual connectivity in carrier aggregation. The UE applies configuration information to a second cell which is configured by a first cell for a carrier aggregation, and receives, from a base station, a message including a request for switching the second cell from the carrier aggregation to dual connectivity. The UE performs a procedure for the switching of the second cell from the carrier aggregation to the dual connectivity. The second cell becomes a primary secondary cell or a secondary cell of a secondary cell group (SCG). The UE transmits a physical uplink control channel (PUCCH) to the primary secondary cell or the secondary cell of the SCG after the switching of the second cell from the carrier aggregation to the dual connectivity.

公开(公告)号：US10306482B2

公开(公告)日：2019-05-28

申请号：US15038528

申请日：2014-12-01

Applicant: LG ELECTRONICS INC.

Inventor： Daesung Hwang ,  Joonkui Ahn ,  Suckchel Yang ,  Yunjung Yi

IPC: H04J3/06 ,  H04W16/26 ,  H04W4/70 ,  H04W74/08 ,  H04L1/18 ,  H04B7/0413 ,  H04J11/00 ,  H04L29/06 ,  H04W72/04 ,  H04W72/12 ,  H04L1/08 ,  H04L5/00

Abstract: A disclosure of the present specification provides a method for performing a random access procedure for coverage enhancement. The method may comprise the steps of transmitting a random access preamble repetitively to a certain cell on the basis of a predetermined repetition level; when a random access response has not received within a random access response window, reconfiguring the repetition level; and retransmitting the random access preamble repetitively on the basis of the reconfigured repetition level.

公开(公告)号：US10285191B2

公开(公告)日：2019-05-07

申请号：US15536788

申请日：2015-12-15

Applicant: LG Electronics Inc.

Inventor： Daesung Hwang ,  Yunjung Yi

IPC: H04L5/00 ,  H04W72/04 ,  H04W72/12

Abstract: One embodiment of the present specification provides a method by which a wireless device, to which coverage enhancement (CE) is applied, transmits an uplink channel. The method can comprise a step for receiving, by the wireless device, sounding reference signal (SRS) configuration information for other wireless devices within a cell. The SRS configuration information can comprise information on SRS transmittable subframes. The method can comprise a step for transmitting, by the wireless device, the uplink channel on symbols except for a final symbol on subframes according to a reduced format, when the wireless device transmits the uplink channel on the subframes directed by the subframe information within the SRS configuration information for other wireless devices.

公开(公告)号：US10278135B2

公开(公告)日：2019-04-30

申请号：US15997963

申请日：2018-06-05

Applicant: LG ELECTRONICS INC.

Inventor： Yunjung Yi ,  Joonkui Ahn ,  Daesung Hwang ,  Suhwan Lim

IPC: H04W52/14 ,  H04W52/24 ,  H04W52/36 ,  H04W52/40

Abstract: Descriptions on the method and the apparatus for controlling uplink transmission power are provided. The method for controlling uplink transmission power comprises receiving a signal on a downlink channel, wherein the signal includes information on transmission power which indicates a power control mode, determining whether primary cell (PCell) and secondary cell (SCell) are asynchronous or synchronous, determining maximum transmission power for the SCell, using the information on transmission power, based on whether the PCell and the SCell are asynchronous or synchronous, and transmitting signal to the SCell based on the maximum transmission power for the SCell.

公开(公告)号：US20190037514A1

公开(公告)日：2019-01-31

申请号：US16151799

申请日：2018-10-04

Applicant: LG Electronics Inc.

Inventor： Dongyoun Seo ,  Joonkui Ahn ,  Yunjung Yi ,  Bonghoe Kim ,  Daesung Hwang

IPC: H04W56/00 ,  H04W72/04 ,  H04L5/14

Abstract: Provided is a method for determining an uplink transmission timing of a terminal having a plurality of cells configured therein, and a terminal using the method in a wireless communication system. The method comprises receiving timing advance (TA) configuration information, and determining an uplink transmission timing for each of the two cells on the basis of the TA configuration information, wherein the plurality of cells comprise a first cell using a frequency division duplex (FDD) frame structure and a second cell using a time division duplex (TDD) frame structure.

公开(公告)号：US10165519B2

公开(公告)日：2018-12-25

申请号：US15887236

申请日：2018-02-02

Applicant: LG ELECTRONICS INC.

Inventor： Daesung Hwang ,  Yunjung Yi ,  Joonkui Ahn ,  Suckchel Yang

IPC: H04W52/14 ,  H04W76/15 ,  H04W52/28 ,  H04W52/34

Abstract: A method for performing a power scaling is discussed. The method performed by a user equipment (UE) includes determining, by the UE configured with dual connectivity to a first cell group and a second cell group, a first power for transmitting a first uplink channel on a first subframe toward the first cell group; determining a second power for transmitting a second uplink channel on a second subframe toward the second cell group; and scaling down the second power for transmitting the second uplink channel if a maximum power is exceeded, wherein the first uplink channel includes a first physical random access channel (PRACH), wherein the second uplink channel includes a second PRACH, and wherein the scaling down is performed if the first subframe is overlapped with the second subframe.

公开(公告)号：US20180295643A1

公开(公告)日：2018-10-11

申请号：US15574063

申请日：2016-05-16

Applicant: LG ELECTRONICS INC.

Inventor： Seungmin Lee ,  Suckchel Yang ,  Joonkui Ahn ,  Daesung Hwang

IPC: H04W72/14 ,  H04W72/04 ,  H04L5/14 ,  H04L5/00 ,  H04W72/12

CPC classification number: H04W72/14 ,  H04L5/001 ,  H04L5/0053 ,  H04L5/0055 ,  H04L5/14 ,  H04W72/0413 ,  H04W72/0453 ,  H04W72/1278 ,  H04W72/1289

Abstract: The present method, for a terminal carrying out carrier aggregation in a wireless communication system, comprises the steps of: receiving, from a base station, at least one downlink grant; determining whether or not the at least one downlink grant corresponds to a valid downlink grant; and on the basis of the determination, transmitting a physical uplink control channel (PUCCH), wherein the PUCCH transmission step, on the basis of the determination, comprises the steps of: if a downlink grant included in the at least one downlink grant is a valid down grant, then transmitting a PUCCH associated with the valid downlink grant; and if a downlink grant included in the at least one downlink grant is not a valid down grant,

公开(公告)号：US20180295585A1

公开(公告)日：2018-10-11

申请号：US16007337

申请日：2018-06-13

Applicant: LG ELECTRONICS INC.

Inventor： Daesung Hwang ,  Yunjung Yi ,  Joonkui Ahn ,  Suckchel Yang

IPC: H04W52/14 ,  H04W52/28 ,  H04W76/15

Abstract: A method for performing a power scaling is discussed. The method performed by a user equipment (UE) includes determining, by the UE configured with dual connectivity to a master cell group (MCG) and a secondary cell group (SCG), a first power for a first transmission in a first subframe toward the MCG determining a second power for a second transmission toward the SCG and scaling down the second power for the second transmission toward the SCG if a total power related to the MCG and the SCG exceeds a maximum power, wherein the scaling down is performed if the first transmission toward the MCG in the first subframe is overlapped with the second transmission toward the SCG.

公开(公告)号：US10075261B2

公开(公告)日：2018-09-11

申请号：US15111992

申请日：2015-01-15

Applicant: LG ELECTRONICS INC.

Inventor： Joonkui Ahn ,  Dongyoun Seo ,  Suckchel Yang ,  Yunjung Yi ,  Daesung Hwang

IPC: H04L1/18 ,  H04L5/14 ,  H04W72/04 ,  H04W84/04

CPC classification number: H04L1/1812 ,  H04L5/0055 ,  H04L5/14 ,  H04L5/1415 ,  H04L5/1469 ,  H04W72/0413 ,  H04W72/042 ,  H04W84/042

Abstract: Provided are a method for performing a hybrid automatic repeat request (HARQ) in a wireless communication system, and a wireless device using the same. The wireless device receives at least one downlink (DL) transmission block from at least one DL sub-frame in a frequency division duplex (FDD) cell and transmits ACK/NACK corresponding to the at least one DL transmission block from an uplink (UL) HARQ sub-frame in a time division duplex (TDD) cell. The UL HARQ sub-frame belongs to a subset of a set of UL sub-frames determined according to the UL-DL setting of the TDD cell.

公开(公告)号：US10039142B2

公开(公告)日：2018-07-31

申请号：US14763487

申请日：2014-01-24

Applicant: LG ELECTRONICS INC.

Inventor： Yunjung Yi ,  Daesung Hwang ,  Joonkui Ahn

IPC: H04L12/26 ,  H04W76/04 ,  H04W52/02 ,  H04L5/00 ,  H04W24/02 ,  H04W48/16 ,  H04W76/28 ,  H04W88/02

CPC classification number: H04W76/28 ,  H04L5/0048 ,  H04W24/02 ,  H04W48/16 ,  H04W52/0206 ,  H04W52/0216 ,  H04W88/02 ,  Y02D70/00 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/21 ,  Y02D70/23 ,  Y02D70/24 ,  Y02D70/25

Abstract: A method for and apparatus for performing an initial access procedure in a wireless communication system is provided. A wireless device detects a discontinuous transmission (DTX) cell that operates in a discontinuous transmission (DTX) state by receiving a discovery signal from the DTX cell; transmits an initial request message to the DTX cell to request the DTX cell to transition from the DTX state to a continuous transmission (TX) state.