-
公开(公告)号:US10009800B2
公开(公告)日:2018-06-26
申请号:US15319655
申请日:2015-03-09
Applicant: LG ELECTRONICS INC.
Inventor: Genebeck Hahn , Jaehoon Chung , Eunjong Lee , Jinmin Kim , Kukheon Choi , Kwangseok Noh
CPC classification number: H04W36/0027 , H04W36/0094 , H04W36/18 , H04W36/30 , H04W72/042 , H04W76/27
Abstract: According to one embodiment of the present invention, a user equipment performs handover from a fixed cell to a moving cell by receiving, from the fixed cell, measurement configuration information containing measurement report conditions on the moving cell, if the measurement results on the moving cell satisfy the measurement report conditions, reporting, to the fixed cell, the measurement results on the moving cell, configuring a secondary connection in the moving cell in addition to a primary connection in the fixed cell, releasing the primary connection in the fixed cell and switching secondary connection in the moving cell to a new primary connection.
-
公开(公告)号:US09979457B2
公开(公告)日:2018-05-22
申请号:US15148902
申请日:2016-05-06
Applicant: LG ELECTRONICS INC.
Inventor: Kyungtae Jo , Hangyu Cho , Jinmin Kim , Eunsung Park , Sungjin Park
IPC: H04B7/06 , H04B7/0413 , H04W16/28 , H04W84/12
CPC classification number: H04B7/0634 , H04B7/0413 , H04B7/0617 , H04B7/0632 , H04B7/0695 , H04W16/28 , H04W84/12
Abstract: A method and apparatus for performing a beamforming training for a multiple input multiple output (MIMO) operation in a wireless local area network is provided. The apparatus assigns at least one of a plurality of sector groups with respect to each of a plurality of array antennas. The apparatus determines a sector used for a data transmission during a sector sweep by transmitting a plurality of sector sweep messages in the plurality of sector groups through the plurality of array antennas to responders simultaneously.
-
公开(公告)号:US09894627B2
公开(公告)日:2018-02-13
申请号:US14892430
申请日:2014-05-16
Applicant: LG ELECTRONICS INC.
Inventor: Hyeyoung Choi , Jaehoon Chung , Genebeck Hahn , Ilmu Byun , Jinmin Kim , Heejeong Cho , Eunjong Lee
CPC classification number: H04W56/0015 , H04W36/04 , H04W56/0045
Abstract: The present invention relates to a method for transmitting information for synchronization of a user equipment by a base station in a wireless communication system and apparatus for the same. In one embodiment of the present invention, a source base station transmits a request message requesting uplink synchronization information according to a predetermined reference to a target base station, receives a response message including the synchronization information from the target base station in response to the requested message, and transmits the received synchronization information to one or more user equipments which are to move to a cell serviced by the target base station. The synchronization information is used when the user equipments move to the cell serviced by the target base station without a process of acquiring the synchronization information.
-
224.
公开(公告)号:US09888419B2
公开(公告)日:2018-02-06
申请号:US15517821
申请日:2015-10-15
Applicant: LG ELECTRONICS INC.
Inventor: Kukheon Choi , Jaehoon Chung , Genebeck Hahn , Eunjong Lee , Jinmin Kim , Kwangseok Noh
Abstract: The present invention relates to a wireless access system supporting millimeter waves (mmWave) and provides methods for performing fast fallback so as to avoid link disconnections and devices for supporting same. The method whereby a legacy base station supports the fast fallback of a mmWave terminal in a wireless access system supporting millimeter waves (mmWave), according to one embodiment of the present invention, may comprise the steps of: receiving, from the mmWave terminal, a first fallback request message for requesting fast fallback; operating a fallback timer for determining whether or not to perform fallback after receiving the first fallback request message; and determining whether or not a second fallback request message for requesting fast fallback has been received from a mmWave base station within the fallback timer.
-
公开(公告)号:US09866307B2
公开(公告)日:2018-01-09
申请号:US14903251
申请日:2014-07-14
Applicant: LG ELECTRONICS INC.
Inventor: Kitae Kim , Jinmin Kim , Kwangseok Noh , Kukheon Choi , Jaehoon Chung
IPC: H04B7/08 , H04B7/04 , H04L5/00 , H04L5/14 , H04B7/0413
CPC classification number: H04B7/0854 , H04B7/0413 , H04L5/0023 , H04L5/14
Abstract: A method and device for transmitting data symbols using an antenna correlation in a wireless access system supporting multiple input/multiple output (MIMO) operations. The method includes: receiving, from a receiving end, grouping information of a plurality of antennas for supporting the MIMO operations, where the grouping information includes information on the two selected antenna subgroups; selecting two antennas of which a correlation is highest from the two selected antenna subgroups respectively for transmitting the data symbols; and transmitting different data symbols through each of the two selected antennas of the two selected antenna subgroups on an identical time frequency resource. Here, antennas with a highest correlation are grouped into two or more antenna subgroups. Also, two antenna subgroups, of which a correlation is lowest from the two or more antenna subgroups, are selected among the two or more antenna subgroups by the receiving end.
-
公开(公告)号:US09838195B2
公开(公告)日:2017-12-05
申请号:US14895902
申请日:2014-05-28
Applicant: LG ELECTRONICS INC.
Inventor: Kitae Kim , Jinmin Kim , Kwangseok Noh , Kukheon Choi , Jaehoon Chung
IPC: H04L5/14 , H04W72/08 , H04W72/04 , H04W24/08 , H04B17/345
CPC classification number: H04L5/1461 , H04B17/345 , H04W24/08 , H04W72/0453 , H04W72/082
Abstract: A method of measuring a self-interference channel in user equipment in a full duplex radio (FDR) communication environment is disclosed. The method includes receiving, from a base station, resource allocation information including information about a time interval, the base station stopping transmission of a signal in the time interval for measurement of the self-interference channel in the user equipment, transmitting a first reference signal for measurement of the self-interference channel in the time interval specified by the resource allocation information, and receiving a second reference signal input to a receiver of the user equipment according to self-interference in the time interval, wherein the second reference signal is a signal corresponding to the first reference signal transmitted over a wireless channel.
-
公开(公告)号:US09825687B2
公开(公告)日:2017-11-21
申请号:US15033827
申请日:2014-05-02
Applicant: LG ELECTRONICS INC.
Inventor: Kitae Kim , Jaehoon Chung , Jiwon Kang , Kwangseok Noh , Kukheon Choi , Hyunsoo Ko , Jinmin Kim
CPC classification number: H04B7/0671 , H04B7/0617 , H04B17/12
Abstract: In this disclosure, methods for pre-compensation of the phase shifting error, and apparatuses for the same are disclosed. In one example, a device performs precoding of a digital signal, while acquiring information on an error caused by a phase shifting of the precoding. Then, the device performs phase compensation on the digital signal based on the acquired information. Here, the phase compensation may compensate different amount of phase based on an amount of the phase shifting of the precoding. This phase compensated-digital signal is converted to an analog signal, and is transmitted to a receiver.
-
公开(公告)号:US09819407B2
公开(公告)日:2017-11-14
申请号:US15034020
申请日:2014-04-30
Applicant: LG ELECTRONICS INC.
Inventor: Kitae Kim , Jaehoon Chung , Jiwon Kang , Kwangseok Noh , Kukheon Choi , Hyunsoo Ko , Jinmin Kim
CPC classification number: H04B7/0656 , H04B7/046 , H04B7/0617 , H04B7/0619 , H04B17/11 , H04L25/0224 , H04L25/03343 , H04L25/49 , H04L27/2634 , H04L27/2657
Abstract: In this disclosure, methods for pre-compensation of the phase shifting error, and apparatuses for the same are disclosed. In one example, a device performs precoding of a digital signal, while acquiring information on an error caused by a phase shifting of the precoding. Then, the device performs phase compensation on the digital signal based on the acquired information. This phase compensated-digital signal is converted to an analog signal, and is transmitted to a receiver.
-
公开(公告)号:US09814076B2
公开(公告)日:2017-11-07
申请号:US14760453
申请日:2013-11-12
Applicant: LG ELECTRONICS INC.
Inventor: Jinmin Kim , Kitae Kim , Hyunsoo Ko , Jaehoon Chung
CPC classification number: H04W74/0833 , H04L5/0053 , H04L5/0091 , H04W28/18 , H04W56/001 , H04W56/0045 , H04W72/042 , H04W74/002 , H04W74/008 , H04W74/0866 , H04W74/0891
Abstract: The present invention provides a method for performing an initial access process used in a wireless access system and in an ultrahigh frequency band, and devices supporting same. The method for performing a high-speed initial access process in a wireless access system supporting an ultrahigh frequency band, according to one embodiment of the present invention, may comprise the steps of: receiving a synchronizing signal; receiving a broadcast channel signal; generating a random access preamble by using pre-fixed physical random access parameters according to a small cell supported in the ultrahigh frequency band; and transmitting the generated random access preamble on the basis of the synchronizing signal and the broadcast channel signal.
-
230.
公开(公告)号:US09768940B2
公开(公告)日:2017-09-19
申请号:US14647011
申请日:2013-12-02
Inventor: Hyunsoo Ko , Kyungjun Choi , Kwangsoon Kim , Jaehoon Chung , Jinmin Kim
CPC classification number: H04L5/0073 , H04B7/024 , H04J11/0036 , H04J11/0053 , H04L5/0023 , H04L5/0035 , H04L5/005 , H04W72/08 , H04W72/085
Abstract: The present invention relates to a method of transmitting and receiving a signal in a wireless communication system. In particular, in a time division multi-cell cooperative communication system, a base station may receive a reference signal, estimate a channel of each user terminal based on the reference signal, and determine a transmission and reception filter based on estimated channel information. The base station and a cooperative base station that cooperates with the base station may mutually exchange the reference signal and average signal power information on a terminal and determine the transmission and reception filter based on exchanged information.
-
-
-
-
-
-
-
-
-