公开(公告)号：US09854609B2

公开(公告)日：2017-12-26

申请号：US14903528

申请日：2014-07-28

Applicant: LG ELECTRONICS INC.

Inventor： Suckchel Yang ,  Joonkui Ahn ,  Yunjung Yi ,  Hyangsun You ,  Bonghoe Kim

IPC: H04W72/04 ,  H04W74/08 ,  H04W4/00 ,  H04W72/12 ,  H04W88/02

CPC classification number: H04W74/0833 ,  H04W4/70 ,  H04W72/0413 ,  H04W72/0446 ,  H04W72/12 ,  H04W74/08 ,  H04W88/02

Abstract: The present invention relates to a method for performing a random access procedure in a wireless communication system supporting repeated transmission of a same signal, and an apparatus for same, and more specifically, to a method and an apparatus for same, the method comprising the steps of: repeatedly transmitting a physical random access channel (PRACH) signal by using a PRACH resource; and receiving a random access response signal from a specific time section, as a response to the PRACH signal, wherein the random access response signal includes information related to the number of repeated transmissions of the PRACH signal.

公开(公告)号：US09854575B2

公开(公告)日：2017-12-26

申请号：US15052429

申请日：2016-02-24

Applicant: LG ELECTRONICS INC.

Inventor： Suckchel Yang ,  Hanbyul Seo ,  Joonkui Ahn

IPC: H04W72/04 ,  H04L1/18 ,  H04L1/00 ,  H04L5/00

CPC classification number: H04W72/042 ,  H04L1/0038 ,  H04L1/18 ,  H04L1/1812 ,  H04L1/1854 ,  H04L1/1861 ,  H04L5/0055 ,  H04W72/0406 ,  H04W72/0413

Abstract: The present invention relates to a wireless communication and, more specifically, to a method for transmitting an HARQ) response by a UE in a wireless communication system, and an apparatus for the same. The method includes receiving an E-PDCCH signal on at least one of a plurality of enhanced physical downlink control channel (E-PDCCH) sets, each E-PDCCH set including a plurality of resources units indexed per E-PDCCH set; and transmitting the HARQ response using a physical uplink control channel (PUCCH) resource determined using the index of the first resource unit among one or more resource units carrying the E-PDCCH signal, wherein the index of the first resource unit is determined on the basis of the E-PDCCH set having the lowest index among the plurality of E-PDCCH sets when specific conditions are satisfied.

公开(公告)号：US09848418B2

公开(公告)日：2017-12-19

申请号：US15353358

申请日：2016-11-16

Applicant: LG ELECTRONICS INC.

Inventor： Dongyoun Seo ,  Hakseong Kim ,  Joonkui Ahn ,  Hyukjin Chae ,  Hanbyul Seo

IPC: H04W4/00 ,  H04W72/04 ,  H04L5/00 ,  H04L1/18 ,  H04W52/34 ,  H04B1/707 ,  H04J13/00

CPC classification number: H04W72/042 ,  H04B1/707 ,  H04J13/004 ,  H04L1/1861 ,  H04L5/001 ,  H04L5/0053 ,  H04L5/0055 ,  H04W52/34 ,  H04W72/0413

Abstract: A method and corresponding apparatus, where the apparatus transmits, to a user equipment (UE), downlink control information (DCI) including a downlink assignment index (DAI) through an enhanced physical downlink control channel (E-PDCCH). The DCI transmitted through the E-PDCCH includes an additional field which is not present in DCI transmitted through a physical downlink control channel (PDCCH). If the DAI value included in the DCI is greater than 1, the additional field is used to determine a single resource for the ACK/NACK among the plurality of PUCCH resources configured by a higher layer signal.

公开(公告)号：US09848412B2

公开(公告)日：2017-12-19

申请号：US15256270

申请日：2016-09-02

Applicant: LG ELECTRONICS INC.

Inventor： Suckchel Yang ,  Mingyu Kim ,  Joonkui Ahn ,  Dongyoun Seo

IPC: H04W72/04 ,  H04W24/10 ,  H04B7/06 ,  H04L5/00

CPC classification number: H04W72/0413 ,  H04B7/0626 ,  H04L5/001 ,  H04L5/0055 ,  H04L5/0057 ,  H04W24/10 ,  H04W72/0453

Abstract: A method is provided for reporting Channel State Information (CSI) in a wireless access system which supports carrier aggregation. A user equipment (UE) measures a first type CSI for a first component carrier (CC) of two or more downlink (DL) CCs, and measures a second type CSI for a second CC of the two or more DL CCs. The UE reports the first type CSI only, when a collision of a report of the first type CSI with a report of the second CSI type occurs in a same subframe. The first type CSI includes (1) only a Wideband Channel Quality Indicator (WB-CQI), (2) the WB-CQI and a first Precoding Matrix Indicator (PMI) or (3) the WB-CQI and a second PMI. The second type CSI includes (1) only a SubBand (SB) CQI or (2) the SB-CQI and a SB second PMI.

公开(公告)号：US09800362B2

公开(公告)日：2017-10-24

申请号：US14537703

申请日：2014-11-10

Applicant: LG ELECTRONICS INC.

Inventor： Suckchel Yang ,  Mingyu Kim ,  Joonkui Ahn ,  Dongyoun Seo

IPC: H04J3/00 ,  H04J3/16 ,  H04L5/14 ,  H04W72/04 ,  H04L5/00 ,  H04L1/18 ,  H04L27/26

CPC classification number: H04J3/1694 ,  H04L1/1861 ,  H04L5/001 ,  H04L5/0048 ,  H04L5/0053 ,  H04L5/0055 ,  H04L5/14 ,  H04L27/2636 ,  H04W72/0413

Abstract: A method and a communication device are described for transmitting uplink control information in a wireless communication system supporting carrier aggregation. At least one of a plurality of physical downlink control channels (PDCCHs) indicating downlink semi-persistent scheduling (SPS) release or physical downlink shared channels (PDSCHs) is received in a plurality of downlink subframes according to an uplink (UL)- downlink (DL) configuration for time division duplex (TDD);. A PDCCH with a downlink control information (DCI) format for UL scheduling including a 2-bit field is received. Acknowledgement (ACK)/negative acknowledgement (NACK) information corresponding to the at least one PDCCH indicating downlink SPS release or the PDSCHs is transmitted through a physical uplink shared channel (PUSCH) based on the received PDCCH with the DCI format for UL scheduling.

公开(公告)号：US20170303306A1

公开(公告)日：2017-10-19

申请号：US15512632

申请日：2015-09-25

Applicant: LG Electronics Inc.

Inventor： Seungmin Lee ,  Joonkui Ahn ,  Suckchel Yang ,  Hanbyul Seo

IPC: H04W72/14 ,  H04W72/12 ,  H04L1/00 ,  H04L5/14 ,  H04W74/08 ,  H04W72/04 ,  H04W16/14 ,  H04L5/00

Abstract: A method for receiving a signal by a terminal, having a plurality of cells configured, in a wireless communication system according to an embodiment of the present invention comprises the steps of: assuming a first uplink subframe of a first cell, having a time division duplex (TDD) frame structure among a plurality of cells, to be a downlink subframe on the basis of a predetermined condition and blind-decoding same; and, if a downlink grant with respect to a second cell, located in an unlicensed band among the plurality of cells, is detected by means of the blind-decoding, receiving downlink data through the second cell, wherein the first uplink subframe is indicated as an uplink subframe by means of a first uplink-downlink subframe configuration in an enhanced interface mitigation and traffic adaptation (eIMTA) fallback comprised in a system information block type 1 (SIB 1) and at the same time is indicated as a downlink subframe by means of downlink hybrid automatic repeat request (HARQ) reference configuration in the eIMTA fallback.

公开(公告)号：US09788289B2

公开(公告)日：2017-10-10

申请号：US14379122

申请日：2013-03-19

Applicant: LG ELECTRONICS INC.

Inventor： Bonghoe Kim ,  Yunjung Yi ,  Suckchel Yang ,  Hanbyul Seo ,  Joonkui Ahn ,  Dongyoun Seo

IPC: H04W56/00 ,  H04W72/04 ,  H04L5/00 ,  H04L27/26 ,  H04J11/00

CPC classification number: H04W56/0005 ,  H04J11/0069 ,  H04L5/0007 ,  H04L5/0048 ,  H04L27/2647 ,  H04W56/00 ,  H04W72/04

Abstract: The method of transmitting the reference signal includes receiving a synchronization signal in a subframe including contiguous first slot and second slot, and receiving a reference signal in the subframe, in which each of the first slot and the second slot includes a plurality of RBs and a plurality of OFDM symbols, the synchronization signal includes a PSS and a SSS, the PSS is received in the last OFDM symbol of the first slot, the SSS is received in a previous symbol before the last OFDM symbol of the first slot, a cell identifier is acquired based on the PSS and the SSS, the synchronization signal is received in center 6 RBs among the plurality of RBs, and the reference signal is received in at least one 01-DM symbol among the plurality of OFDM symbols in the second slot through the center 6 RBs.

公开(公告)号：US09768923B2

公开(公告)日：2017-09-19

申请号：US14367817

申请日：2012-12-20

Applicant: LG ELECTRONICS INC.

Inventor： Suckchel Yang ,  Dongyoun Seo ,  Joonkui Ahn

IPC: H04L5/00 ,  H04W74/08 ,  H04W56/00 ,  H04W88/02

CPC classification number: H04L5/001 ,  H04W56/0005 ,  H04W56/0045 ,  H04W56/0075 ,  H04W74/0833 ,  H04W88/02

Abstract: The present invention relates to a wireless communication system. More particularly, the present invention relates to a method for acquiring uplink synchronization in a terminal having a plurality of cells in a carrier aggregation-based wireless communication system and an apparatus therefor, the method comprising the steps of: transmitting a random access preamble on a first cell; receiving a random access response message including an uplink timing adjustment value for the first cell after transmitting the random access preamble; and performing uplink transmission in the first cell by using the uplink timing adjustment value, wherein a transmission time point of the random access preamble is given based on a specific time point related to a second cell.

公开(公告)号：US20170238296A1

公开(公告)日：2017-08-17

申请号：US15503062

申请日：2015-09-01

Applicant: LG Electronics Inc.

Inventor： Seungmin Lee ,  Hanbyul Seo ,  Byounghoon Kim ,  Joonkui Ahn

IPC: H04W72/04 ,  H04L1/18 ,  H04L5/00 ,  H04W72/12

CPC classification number: H04W72/0406 ,  H04L1/18 ,  H04L1/1861 ,  H04L5/00 ,  H04L5/001 ,  H04L5/0055 ,  H04W72/0446 ,  H04W72/1268 ,  H04W72/1273

Abstract: The present invention relates to a signal transmission and reception method and device using a plurality of cells of a terminal in a wireless communication system supporting a carrier aggregation. Particularly, the signal transmission and reception method comprises the steps of: receiving transmission control information for a primary cell (PCell) and a secondary cell (SCell) according to uplink-downlink configuration difference from each other, transmitting and receiving a signal in a specific time period according to the transmission control information; and performing a signal transmission and reception operation according to a pre-defined configuration when a signal transmission in a specific time period is not indicated in the transmission control information.

公开(公告)号：US09730107B2

公开(公告)日：2017-08-08

申请号：US14773846

申请日：2014-03-14

Applicant: LG ELECTRONICS INC.

Inventor： Yunjung Yi ,  Joonkui Ahn

IPC: H04W4/00 ,  H04W28/16 ,  H04W48/12 ,  H04L5/00 ,  H04W24/10 ,  H04W88/02

CPC classification number: H04W28/16 ,  H04L5/001 ,  H04L5/0053 ,  H04L5/0073 ,  H04W24/10 ,  H04W48/12 ,  H04W88/02

Abstract: A method for and apparatus for performing a cell management in a wireless communication system is provided. A wireless device detects a cell configuration based on a cell state, the cell state is determined by at least one of a number of UEs, a data offloading, a traffic pattern, and a UE mobility. The cell state includes a dormant or a low_active in which a resource for the reference signal is smaller than a resource for a high_active, and a transmission period of the reference signal when the cell state is in the dormant or the low_active is longer than a transmission period of a reference signal when a cell state is in the high_active. Thus, a cell specific RSs such as CRS, SIB, or paging and synchronization transmission as overhead in a cell can be minimized and controlled based on the active UEs.