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    Device and method using adaptive codebook for dual beamforming feedback and wireless communication system including the same
    12.
    发明授权
    Device and method using adaptive codebook for dual beamforming feedback and wireless communication system including the same 有权

    公开(公告)号：US11387877B2

    公开(公告)日：2022-07-12

    申请号：US17372750

    申请日：2021-07-12

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Eunsung Jeon ,  Wookbong Lee ,  Myeongjin Kim ,  Jonghun Han

    IPC: H04B7/06 ,  H04L25/02 ,  H04W84/12

    Abstract: A beamformee device includes a channel estimator, first and second beamforming matrix providers and a dimension reduction unit. The channel estimator receives a NDP through a channel, and obtains channel information of the channel based on the NDP. The first beamforming matrix provider provides wideband beamforming matrices based on the channel information. The dimension reduction unit generates equivalent channel information based on the wideband beamforming matrices. The second beamforming matrix provider provides beamforming matrices based on the equivalent channel information. The wideband beamforming matrices and the subcarrier beamforming matrices are fed back to the beamformer device. Any one or any combination of the plurality of wideband beamforming matrices and the plurality of subcarrier beamforming matrices are selected from codebooks.

    STATION AND ACCESS POINT PERFORMING WLAN-BASED COMMUNICATION, AND OPERATION METHODS THEREOF
    18.
    发明公开
    STATION AND ACCESS POINT PERFORMING WLAN-BASED COMMUNICATION, AND OPERATION METHODS THEREOF 审中-公开

    公开(公告)号：US20230171052A1

    公开(公告)日：2023-06-01

    申请号：US18058898

    申请日：2022-11-28

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Jinmin Kim ,  Wookbong Lee ,  Youngwook Son

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

    CPC classification number: H04L5/0044 ,  H04L1/0003 ,  H04W72/0453 ,  H04W84/12

    Abstract: A station (STA) that communicates with an access point (AP) in a Wireless Local Area Network (WLAN) system includes a transceiver configured to support transmission and reception of signals within at least a first bandwidth and to receive a first physical layer protocol data unit (PPDU) conforming to a second bandwidth greater than the first bandwidth, and processing circuitry configured to support a wider bandwidth than the first bandwidth by obtaining a second PPDU allocated to the STA within the first bandwidth from the first PPDU. The processing circuitry is configured to control the transceiver to transmit, to the AP, performance information indicating first modulation and coding schemes (MCSs) supportable in the wider bandwidth according to a capability of the STA, among a plurality of candidate MCSs.

    APPARATUS AND METHOD OF COMMUNICATION BASED ON EXTENDED BANDWIDTH AND MULTI-RESOURCE UNIT IN WIRELESS LOCAL AREA NETWORK SYSTEM
    20.
    发明申请
    APPARATUS AND METHOD OF COMMUNICATION BASED ON EXTENDED BANDWIDTH AND MULTI-RESOURCE UNIT IN WIRELESS LOCAL AREA NETWORK SYSTEM 有权

    公开(公告)号：US20210360628A1

    公开(公告)日：2021-11-18

    申请号：US17313232

    申请日：2021-05-06

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： MYEONGJIN KIM ,  Wookbong Lee

    IPC: H04W72/04

    Abstract: A method of communicating, by a first device, with at least one second device in a wireless local area network (WLAN) system includes allocating at least one resource unit (RU) within a bandwidth to a second device; generating at least one subfield defining the at least one RU; generating a trigger frame comprising a user information field comprising the at least one subfield, and transmitting a PPDU including the trigger frame to the at least one second device, wherein the generating comprises setting at least seven bits associated with the at least one RU and setting at least two bits as a value defining a subband that includes the at least one RU when the band width comprises at least four subbands.

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