公开(公告)号：US20170339720A1

公开(公告)日：2017-11-23

申请号：US15524819

申请日：2015-11-06

Applicant: LG ELECTRONICS INC.

Inventor： Seonwook KIM ,  Joonkui AHN ,  Kijun KIM ,  Hanbyul SEO ,  Hyukjin CHAE

IPC: H04W74/08 ,  H04W16/14

CPC classification number: H04W74/0808 ,  H04L5/001 ,  H04L27/0006 ,  H04W16/14 ,  H04W88/08

Abstract: The present invention relates to a wireless connection system that supports unlicensed bands. A method for performing backoff, methods for configuring a reservation signal transmission and a transmission opportunity section, and apparatus supporting the same. A method for performing a backoff operation in a wireless connection system supporting unlicensed bands, that is an embodiment of the present invention, may comprises the steps of: configuring a backoff counter N so as to perform a backoff operation; determining whether a current sub-frame is a back-off permitted section; performing a carrier sensing (CS) operation for checking if an unlicensed band is in an idle state if the sub-frame is within a backoff permitted section, for each CS unit; decreasing the backoff counter N by 1 after performing the CS operation; and transmitting a reservation signal or data using a U cell that is formed in an unlicensed band if the backoff counter value expires. In this regard, the CS operation is not performed in sub-frames except for the backoff permitted section and the backoff counter value can be maintained continuously.

公开(公告)号：US20170311313A1

公开(公告)日：2017-10-26

申请号：US15648883

申请日：2017-07-13

Applicant: LG ELECTRONICS INC.

Inventor： Jonghyun PARK ,  Hanbyul SEO ,  Kijun KIM ,  Byounghoon KIM

IPC: H04W72/04 ,  H04L27/26 ,  H04L5/00 ,  H04B1/7143 ,  H04L1/00

CPC classification number: H04W72/0413 ,  H04B1/7143 ,  H04L1/00 ,  H04L5/0012 ,  H04L5/0023 ,  H04L5/0035 ,  H04L5/0048 ,  H04L5/005 ,  H04L27/26 ,  H04L27/2613 ,  H04W72/04 ,  H04W72/044

Abstract: The present invention relates to a wireless communication system, and more particularly, to a method and apparatus for transmitting an uplink signal. A method for transmitting an uplink signal at a UE in a wireless communication system includes, when a virtual cell ID for a reference signal for demodulation of a physical uplink channel is provided, generating a sequence of the reference signal on the basis of the virtual cell ID, and transmitting the generated reference signal to an eNB. A group hopping pattern of the reference signal can be determined on the basis of the virtual cell ID.

公开(公告)号：US20170310449A1

公开(公告)日：2017-10-26

申请号：US15516793

申请日：2016-01-05

Applicant: LG ELECTRONICS INC.

Inventor： Hyungtae KIM ,  Bonghoe KIM ,  Jonghyun PARK ,  Kijun KIM

IPC: H04L5/00 ,  H04L5/14

CPC classification number: H04L5/0057 ,  H04B7/0417 ,  H04B7/063 ,  H04B7/0632 ,  H04L5/14

Abstract: Disclosed is a method by which a terminal reports channel quality information (CQI) to a base station in a multi-antenna-based wireless communication system. Particularly, the method comprises the steps of: receiving, through an upper layer, the reference signal configuration defined by P number of antenna ports; receiving, through M number of antenna ports, reference signals from the base station; grouping the P number of antenna ports into antenna port groups formed of the M number of antenna ports; calculating CQIs by using the reference signal corresponding to each of the antenna port groups on the basis of the assumption that predefined precoders are applied to the reference signals; and reporting, to the base station, N number of CQIs among the calculated CQIs.

公开(公告)号：US20170280415A1

公开(公告)日：2017-09-28

申请号：US15503683

申请日：2015-08-13

Applicant: LG ELECTRONICS INC.

Inventor： Bonghoe KIM ,  Kijun KIM ,  Jonghyun PARK ,  Hanjun PARK ,  Hyangsun YOU

IPC: H04W64/00 ,  H04L5/00 ,  H04W24/10 ,  G01S5/02 ,  G01S5/10

CPC classification number: H04W64/003 ,  G01S5/02 ,  G01S5/0236 ,  G01S5/0252 ,  G01S5/10 ,  H04L5/0048 ,  H04W24/10 ,  H04W64/00 ,  H04W88/02 ,  H04W88/08

Abstract: The present invention relates to a method of measuring the position of a terminal by using a heterogeneous network signal. The method comprises receiving transmission time information that represents a time at which a signal for measuring the position of a terminal is transmitted; receiving a first signal from a reference cell at a time represented by the transmission time information; receiving a second signal from a measurement cell at a time represented by the transmission time information; calculating the difference between the time at which the first signal is received and the time at which the second signal is received to generate measurement information; and reporting the measurement information.

公开(公告)号：US20170279502A1

公开(公告)日：2017-09-28

申请号：US15510844

申请日：2015-09-18

Applicant: LG ELECTRONICS INC.

Inventor： Youngtae KIM ,  Kijun KIM ,  Hyungtae KIM ,  Jonghyun PARK ,  Hyukjin CHAE

IPC: H04B7/0413 ,  H04W72/04 ,  H04L5/00 ,  H04B7/06 ,  H04L27/26

CPC classification number: H04B7/0413 ,  H04B7/0469 ,  H04B7/0478 ,  H04B7/0617 ,  H04B7/0626 ,  H04B7/0691 ,  H04L5/0023 ,  H04L5/0048 ,  H04L5/005 ,  H04L5/0051 ,  H04L5/0091 ,  H04L27/2613 ,  H04W72/046

Abstract: The present invention relates to a method and an apparatus for transmitting, by a base station, a reference signal in a wireless communication system supporting a multi-antenna consisting of a plurality of horizontal domain antennas and a plurality of vertical domain antennas. Specifically, the method comprises the steps of: configuring, as a cell-specific reference signal (CRS) port, M first antenna ports among a total of N antennas that the base station has (where N and M are positive integers, N>M); transmitting a CRS using the M first antenna ports and transmitting a demodulation reference signal (DM-RS) using 0 second antenna ports (where 0 is a positive integer, N>O), to a terminal; and receiving channel measurement information using the CRS and the DM-RS which is fed back from the terminal.

公开(公告)号：US20170279501A1

公开(公告)日：2017-09-28

申请号：US15510741

申请日：2015-09-25

Applicant: LG ELECTRONICS INC.

Inventor： Youngtae KIM ,  Kijun KIM ,  Jiwon KANG ,  Jonghyun PARK ,  Kitae KIM

IPC: H04B7/0413 ,  H04L5/00 ,  H04B7/06 ,  H04W4/18

CPC classification number: H04B7/0413 ,  H04B7/0469 ,  H04B7/06 ,  H04L5/0005 ,  H04L5/0023 ,  H04L5/0035 ,  H04L5/005 ,  H04L5/0073 ,  H04W4/18

Abstract: The present invention relates to a base station in a wireless communication system which supports multi-antennas with multiple horizontal domains and multiple vertical domains. Particularly, the present invention comprises: a radio frequency unit and a processor, wherein the radio frequency unit comprises a first radio frequency (RF) chain and a second radio frequency (RF) chain which are connected to antenna elements corresponding to multiple vertical antennas with specific horizontal domains, wherein the processor, connected to the radio frequency unit, is configured to transmit reference signals, and wherein the first RF chain and the second RF chain are configured for different reference signals.

公开(公告)号：US20170276761A1

公开(公告)日：2017-09-28

申请号：US15508747

申请日：2015-09-03

Applicant: LG ELECTRONICS INC.

Inventor： Jonghyun PARK ,  Yunjung YI ,  Hyangsun YOU ,  Kijun KIM

IPC: G01S5/02 ,  H04W4/02

CPC classification number: G01S5/0257 ,  G01S5/02 ,  G01S5/0236 ,  G01S5/0242 ,  G01S5/0263 ,  G01S5/0273 ,  G01S5/10 ,  H04W4/025 ,  H04W24/10 ,  H04W64/00 ,  H04W64/003

Abstract: Disclosed is a method for performing positioning by a user equipment (UE) in a wireless communication system including: receiving first assistance data including first reference cell information and first neighbor cell information from a first base station (BS) through a first frequency; receiving second assistance data including second reference cell information and second neighbor cell information from a second base station through a second frequency; receiving a positioning reference signal (PRS) on the basis of the first assistance data and receiving a discovery reference signal (DRS) on the basis of the second assistance data; performing measurement using the received PRS and the DRS; and reporting a measurement result to a serving BS.

公开(公告)号：US20170273059A1

公开(公告)日：2017-09-21

申请号：US15509162

申请日：2015-09-24

Applicant: LG ELECTRONICS INC.

Inventor： Hyangsun YOU ,  Yunjung YI ,  Kijun KIM ,  Suckchel YANG ,  Hanbyul SEO

IPC: H04W72/04 ,  H04W72/12

CPC classification number: H04W72/042 ,  H04L5/0023 ,  H04L5/0053 ,  H04L5/0094 ,  H04L25/03 ,  H04W4/70 ,  H04W72/1205 ,  H04W84/042

Abstract: Provided is a method for receiving a downlink control channel in a machine type communication (MTC) device configured to operate only in a part of a band among system bands of a cell. A method for receiving a downlink control channel can comprise the steps of: determining a precoding matrix index (PMI) applied to a downlink control channel receivable only in a part of a band; receiving from a cell the downlink control channel in the part of the band in a data area of a subframe; and decoding the downlink control channel, which has been received from the cell, on the basis of the determined PMI.

公开(公告)号：US20170251457A1

公开(公告)日：2017-08-31

申请号：US15592651

申请日：2017-05-11

Applicant: LG ELECTRONICS INC.

Inventor： Hakseong KIM ,  Hanbyul SEO ,  Kijun KIM

IPC: H04W72/04 ,  H04L5/00

CPC classification number: H04W72/042 ,  H04L1/1861 ,  H04L5/001 ,  H04L5/0023 ,  H04L5/0035 ,  H04L5/0037 ,  H04L5/0048 ,  H04L5/0053 ,  H04L5/0055 ,  H04L5/0094

Abstract: A method for determining a starting symbol of a downlink control channel in a subframe including a plurality of symbols at a user equipment in a wireless communication system, the method includes receiving a parameter via a Radio Resource Control (RRC) layer signaling; and determining the starting symbol of the downlink control channel according to a type of the downlink control channel, wherein, if the downlink control channel is a first type, the starting symbol of the downlink control channel is determined to a first symbol of the subframe, and wherein, if the downlink control channel is a second type, the starting symbol of the downlink control channel is determined based on the parameter.

公开(公告)号：US20170215081A1

公开(公告)日：2017-07-27

申请号：US15324256

申请日：2015-07-13

Applicant: LG ELECTRONICS INC.

Inventor： Yunjung YI ,  Hyangsun YOU ,  Byounghoon KIM ,  Seonwook KIM ,  Joonkui AHN ,  Kijun KIM

IPC: H04W16/14 ,  H04W74/08

CPC classification number: H04L27/2656 ,  H04L27/2662 ,  H04W16/14 ,  H04W74/0816 ,  H04W84/12

Abstract: A method and apparatus for transmitting a Wi-Fi signal in a wireless communication system is provided. A device supporting long-term evolution in unlicensed spectrum (LTE-U) transmits a LTE signal, and transmits the Wi-Fi signal. The Wi-Fi signal may be transmitted by various methods, i.e. by being emulated in the LTE signal, by using a Wi-Fi processor which is embedded in a LTE processor, or by using a Wi-Fi processor which is individual to a LTE processor.