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    Method and apparatus for performing random access
    11.
    发明授权
    Method and apparatus for performing random access 有权

    公开(公告)号：US10225827B2

    公开(公告)日：2019-03-05

    申请号：US15054950

    申请日：2016-02-26

    Applicant: LG Electronics Inc.

    Inventor： Joon Kui Ahn ,  Dong Youn Seo ,  Suck Chel Yang ,  Min Gyu Kim

    IPC: H04W72/04 ,  H04W74/08 ,  H04W74/00 ,  H04W4/70 ,  H04W72/12

    Abstract: A method and low-cost/low-capability (LC) device are provided for performing a random access procedure in a wireless communication system. The LC device receives configuration information for a random access procedure from a base station. The configuration information includes resource information for transmitting a random access preamble, and the resource information is specific to the LC device. The LC device transmits, to a base station, a random access preamble on a random access resource determined based on the resource information. The LC device receives a random access response in response to the random access preamble. The random access resource is configured for each region of a coverage of the base station.

    Method and device for transmitting ACK/NACK in wireless communication system
    12.
    发明授权
    Method and device for transmitting ACK/NACK in wireless communication system 有权

    公开(公告)号：US10135597B2

    公开(公告)日：2018-11-20

    申请号：US15719141

    申请日：2017-09-28

    Applicant: LG ELECTRONICS INC.

    Inventor： Dong Youn Seo ,  Min Gyu Kim ,  Suck Chel Yang ,  Joon Kui Ahn

    IPC: H04L5/00 ,  H04L1/16 ,  H04L5/14 ,  H04L1/18 ,  H04L5/26

    Abstract: Provided are a method and a device for transmitting an acknowledgement/not-acknowledgement (ACK/NACK) of a terminal which is set with a plurality of serving cells. The method comprises the steps of: receiving data in a subframe n of a second serving cell; and transmitting an ACK/NACK signal for the data in a subframe n+kSCC(n) of a first serving cell connected to the subframe n of the second serving cell, wherein the first serving cell is a primary cell for the terminal to execute an initial connection establishment procedure or a connection reestablishment procedure, and uses a frequency division duplex (FDD) wireless frame, the second serving cell is a secondary cell allocated to the terminal in addition to the primary cell, and uses a time division duplex (TDD) wireless frame, and the kSCC(n) is a previously determined value.

    Method and apparatus for scheduling in a wireless communication system
    15.
    发明授权
    Method and apparatus for scheduling in a wireless communication system 有权

    公开(公告)号：US09999067B2

    公开(公告)日：2018-06-12

    申请号：US15192789

    申请日：2016-06-24

    Applicant: LG ELECTRONICS INC.

    Inventor： Dong Youn Seo ,  Min Gyu Kim ,  Suck Chel Yang ,  Joon Kui Ahn

    IPC: H04W4/00 ,  H04W72/12 ,  H04B7/26

    CPC classification number: H04W72/1263 ,  H04B7/2656 ,  H04W72/1278

    Abstract: A method and apparatus are provided for configuring subframes in a wireless communication system. A user equipment (UE) receives an uplink-downlink configuration from a base station. The uplink-downlink configuration indicates each of a plurality of subframes in a frame to any one of a downlink subframe, a special subframe and an uplink subframe. The special subframe includes a downlink pilot time slot (DwPTS), a guard period (GP) and an uplink pilot time slot (UpPTS). The UE receives frame configuration information from the base station and configures each of the plurality of subframes in the frame to any one of a downlink subframe, a special subframe and an uplink subframe based on the uplink-downlink configuration and the frame configuration information. The UE communicates with the base station using the configured subframes.

    Radio access method for reduced PAPR
    17.
    发明授权
    Radio access method for reduced PAPR 有权

    公开(公告)号：US09948438B2

    公开(公告)日：2018-04-17

    申请号：US14665604

    申请日：2015-03-23

    Applicant: LG Electronics Inc.

    Inventor： Joon Kui Ahn ,  Jung Hoon Lee ,  Dong Youn Seo ,  Ki Jun Kim

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

    CPC classification number: H04L5/0037 ,  H04L5/0007 ,  H04L27/2614 ,  H04L27/2621 ,  H04L27/2636 ,  H04W72/0453

    Abstract: A wireless communication system is disclosed. A method for performing a radio access in the wireless communication system includes dividing an available frequency band into a plurality of subbands, generating a plurality of frequency domain sequences from a plurality of data symbol sequences by independently performing a Fourier transform process in each of the subbands, independently mapping each of the frequency domain sequences to a corresponding subband, generating one or more transmission symbols by performing an inverse Fourier transform process on the plurality of frequency domain sequences mapped to the available frequency band, and transmitting the one or more transmission symbols to a receiver.

    Method and device for signaling control information in carrier aggregation system
    19.
    发明授权
    Method and device for signaling control information in carrier aggregation system 有权

    公开(公告)号：US09888468B2

    公开(公告)日：2018-02-06

    申请号：US15347367

    申请日：2016-11-09

    Applicant: LG ELECTRONICS INC.

    Inventor： Suck chel Yang ,  Min Gyu Kim ,  Joon Kui Ahn ,  Dong Youn Seo

    IPC: H04W72/04 ,  H04L1/00 ,  H04W72/08 ,  H04W56/00 ,  H04W74/08 ,  H04W76/04

    Abstract: A method, a user equipment, and a base station for maintaining uplink synchronization in a wireless communication system supporting carrier aggregation are discussed. The method of maintaining uplink synchronization at a user equipment according to an embodiment includes receiving a physical downlink control channel (PDCCH) order. The PDCCH order indicates an initiation of a random access procedure and includes a carrier indicator field and a predefined set of values of a 1-bit flag indicating a localized/distributed resource block assignment, and a resource block assignment field. The method further includes transmitting a random access preamble through an uplink component carrier corresponding to a value of the carrier indicator field among a plurality of uplink component carriers.

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