公开(公告)号：US10659126B2

公开(公告)日：2020-05-19

申请号：US15558150

申请日：2015-07-27

Applicant: LG ELECTRONICS INC.

Inventor： Heejin Kim ,  Jiwon Kang ,  Kitae Kim ,  Kilbom Lee ,  Kungmin Park

IPC: H04B7/06 ,  H04B7/04 ,  H04B7/0456 ,  H04L5/00 ,  H04W72/04 ,  H04B7/00

Abstract: A method and device for feeding back channel state information (CSI) by a user equipment (UE) in a wireless communication system applied three-dimensional (3D) beamforming. The method includes: receiving a pilot signal (reference signal) from a base station; configuring a CSI transmission mode in one of a first transmission mode and a second transmission mode based on motion information of the UE; and feeding back the CSI based on the configured CSI transmission mode. The first transmission mode transmits the CSI including precoding matrix index (PMI) information for one of vertical beamforming or horizontal beamforming. The second transmission mode transmits the CSI including PMI information for both vertical beamforming and horizontal beamforming.

公开(公告)号：US10554343B2

公开(公告)日：2020-02-04

申请号：US15749916

申请日：2016-01-22

Applicant: LG ELECTRONICS INC.

Inventor： Kungmin Park ,  Jiwon Kang ,  Kitae Kim ,  Kilbom Lee ,  Heejin Kim

IPC: H04W4/00 ,  H04L1/18 ,  H04W72/12 ,  H04B7/06

Abstract: Disclosed is a retransmitted data reception method comprising the steps of: receiving a first data packet from a base station through a first DU group including one or more DUs; receiving a second data packet, which is retransmitted for the first data packet, through a second DU group including another one or more of the DUs; and combining the first data packet and the second data packet so as to decode the combined data packet, wherein control information corresponding to the second data packet includes an HARQ process ID for notifying that the second data packet is retransmitted for the first data packet.

公开(公告)号：US10477612B2

公开(公告)日：2019-11-12

申请号：US15738765

申请日：2016-01-22

Applicant: LG ELECTRONICS INC.

Inventor： Kungmin Park ,  Jiwon Kang ,  Kitae Kim ,  Kilbom Lee ,  Heejin Kim

IPC: H04W76/25 ,  H04W76/15 ,  H04W74/08 ,  H04L12/24 ,  H04W72/04 ,  H04W4/06 ,  H04W48/16 ,  H04W48/14 ,  H04W8/26 ,  H04W88/06 ,  H04W88/08 ,  H04W4/40 ,  H04W84/00

Abstract: A method of accessing a network by using a virtual UE scheme and a UE thereto are disclosed. The method includes performing a first random access procedure for a first DU group including one or more DUs with respect to a base station, performing a second random access procedure for a second DU group with respect to the base station, while maintaining a connection of the first DU group with the base station, and communicating with the base station via the first DU group and the second DU group.

公开(公告)号：US10447443B2

公开(公告)日：2019-10-15

申请号：US15755895

申请日：2016-07-04

Applicant: LG ELECTRONICS INC.

Inventor： Heejin Kim ,  Jiwon Kang ,  Kilbom Lee ,  Kitae Kim ,  Kungmin Park

IPC: H04L5/00 ,  H04B7/06 ,  H04B7/0408 ,  H04W72/02 ,  H04B7/0417 ,  H04B7/0456 ,  H04B7/08

Abstract: The present application discloses a method for transmitting, at a transmitting end, a signal to a receiving end in a wireless communication system. Specifically, the method for transmitting a signal comprises the steps of: receiving preferred beam identifier information from a representative receiving end of a plurality of receiving ends comprising the receiving end; configuring, on the basis of the preferred beam identifier information, a first precoder for aiming the direction of the signal in a first beam direction and a second precoder for aiming the direction of the signal in the direction of the receiving end with respect to the first beam direction; and transmitting the signal to the receiving end using a hybrid beamformer comprised of the first precoder and the second precoder.

公开(公告)号：US10412611B2

公开(公告)日：2019-09-10

申请号：US15564656

申请日：2015-08-05

Applicant: LG ELECTRONICS INC.

Inventor： Kungmin Park ,  Jiwon Kang ,  Kitae Kim ,  Kilbom Lee ,  Heejin Kim

IPC: H04L12/28 ,  H04W24/10 ,  H04W8/02 ,  H04W72/08 ,  H04L5/00 ,  H04W8/26 ,  H04W16/28 ,  H04W36/30 ,  H04J1/16 ,  H04W88/02 ,  H04W28/02

Abstract: The present invention relates to a method for efficiently supporting communication for vehicles in a next-generation wireless communication system and a device for the same. To this end, a user equipment (UE) receives signals from a single antenna of a network through a plurality of antenna units which are located in dispersed locations of the UE, determines whether or not a mobility-related event of the UE has occurred by means of the signals received through the plurality of antenna units, and, if a mobility-related event of the UE has occurred, transmits an event occurrence report to the network, wherein the occurrence of the mobility-related event of the UE is determined in accordance with the Rx power of the signals and the radio wave distribution between the network and the UE and, more particularly, the angle of arrival (AoA) of the signals received through the plurality of antenna units.

公开(公告)号：US10389466B2

公开(公告)日：2019-08-20

申请号：US15511221

申请日：2014-09-22

Applicant: LG ELECTRONICS INC.

Inventor： Kungmin Park ,  Heejeong Cho ,  Hyunsoo Ko ,  Hyeyoung Choi ,  Ilmu Byun

IPC: H04J11/00 ,  H04L5/00 ,  H04B7/024 ,  H04B7/06 ,  H04L27/26 ,  H04B7/0456 ,  H04W88/08

Abstract: The present invention provides a method for mitigating inter-cell interference. To this end, the present invention includes a second signal transmission step in which, when a transmission symbol to be transmitted to a first receiver is S and a transmission symbol to be transmitted to a second receiver is Z, a symbol S2k (k is an integer) is transmitted to the first receiver through a first transmission antenna according to a first pattern, a symbol S2k* is transmitted to the first receiver through a second transmission antenna, a symbol S2k+1 is transmitted to the first receiver through a third transmission antenna, a symbol S2k+1* is transmitted to the first receiver through a fourth transmission antenna, and symbols Z4k to Z4k+3 and symbols Z4k* to Z4k+3* are transmitted to the second receiver through fifth to eighth transmission antennas according to a second pattern different from the first pattern.

公开(公告)号：US10334636B2

公开(公告)日：2019-06-25

申请号：US15520044

申请日：2015-10-16

Applicant: LG ELECTRONICS INC.

Inventor： Heejeong Cho ,  Hyunsoo Ko ,  Hyeyoung Choi ,  Ilmu Byun ,  Kungmin Park

IPC: H04W52/02 ,  H04W76/10 ,  H04W76/20 ,  H04W76/28 ,  H04W84/12

Abstract: Provided are a method and a device for generating a virtual bearer in a wireless communication system. A mobility management entity (MME) acquires context information for a packet data network (PDN) connection generated through a Wi-Fi network, and generates a virtual bearer in a cellular network on the basis of the acquired context information. The virtual bearer may be generated by various methods according to whether a PDN connection mapped to the PDN connection generated through the Wi-Fi network exists in the cellular network and whether a default bearer exists in the cellular network.

公开(公告)号：US10313175B2

公开(公告)日：2019-06-04

申请号：US15580262

申请日：2016-01-20

Applicant: LG ELECTRONICS INC.

Inventor： Kilbom Lee ,  Jiwon Kang ,  Kitae Kim ,  Kungmin Park ,  Heejin Kim

IPC: H03D1/04 ,  H04L27/38 ,  H04L27/34 ,  H04L27/26 ,  H04W84/12

Abstract: Disclosed is a method for estimating a CFO, the method comprising: measuring a size ratio of a signal pair received in two consecutive OFDM symbols of a predetermined subcarrier; determining the received signal pair as a signal pair to be used for estimating a residual CFO when the size ratio is within a first threshold range; and estimating the residual CFO, using only the received signal pair which has been determined to be used for estimating the residual CFO.

公开(公告)号：US10299292B2

公开(公告)日：2019-05-21

申请号：US15549361

申请日：2016-02-15

Applicant: LG ELECTRONICS INC.

Inventor： Kitae Kim ,  Jiwon Kang ,  Kilbom Lee ,  Kungmin Park ,  Heejin Kim

IPC: H04W74/00 ,  H04W74/08 ,  H04W76/10 ,  H04W88/08 ,  H04J13/00 ,  H04W76/27

Abstract: Provided is a method for detecting whether a random access channel (RACH) preamble collision occurs in a wireless communication system. An evolved Node B (eNB) receives, from a first user equipment (UE), a first RACH preamble generated by using a combination of a plurality of sequences, and also receives, from a second UE, a second RACH preamble generated by using one sequence. The eNB detects whether a collision occurs between the first RACH preamble and the second RACH preamble on the basis of the received patterns of the first RACH preamble and the second RACH preamble, wherein the received patterns of the first RACH preamble and the second RACH preamble are based on channel delay caused by multiple paths.

公开(公告)号：US10194470B2

公开(公告)日：2019-01-29

申请号：US15520044

申请日：2015-10-16

Applicant: LG ELECTRONICS INC.

Inventor： Heejeong Cho ,  Hyunsoo Ko ,  Hyeyoung Choi ,  Ilmu Byun ,  Kungmin Park

IPC: H04W52/02 ,  H04W76/10 ,  H04W76/20 ,  H04W76/28 ,  H04W84/12

Abstract: Provided are a method and a device for generating a virtual bearer in a wireless communication system. A mobility management entity (MME) acquires context information for a packet data network (PDN) connection generated through a Wi-Fi network, and generates a virtual bearer in a cellular network on the basis of the acquired context information. The virtual bearer may be generated by various methods according to whether a PDN connection mapped to the PDN connection generated through the Wi-Fi network exists in the cellular network and whether a default bearer exists in the cellular network.