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    4Tx codebook enhancement in LTE
    2.
    发明授权
    4Tx codebook enhancement in LTE 有权

    公开(公告)号：US12126411B2

    公开(公告)日：2024-10-22

    申请号：US18100466

    申请日：2023-01-23

    Applicant: Texas Instruments Incorporated

    Inventor： Eko Onggosanusi ,  Runhua Chen ,  Ralf Bendlin

    IPC: H04B7/04 ,  H04B7/0417 ,  H04B7/0456 ,  H04B7/06

    CPC classification number: H04B7/0456 ,  H04B7/0417 ,  H04B7/046 ,  H04B7/0469 ,  H04B7/0478 ,  H04B7/0486 ,  H04B7/0626 ,  H04B7/0639

    Abstract: Channel state information (CSI) feedback in a wireless communication system is disclosed. A precoding matrix is generated for multi-antenna transmission based on precoding matrix indicator (PMI) feedback, wherein the PMI indicates a choice of precoding matrix derived from a matrix multiplication of two matrices from a first codebook and a second codebook. In one embodiment, the first codebook comprises at least a first precoding matrix constructed with a first group of adjacent Discrete-Fourier-Transform (DFT) vectors. In another embodiment, the first codebook comprises at least a second precoding matrix constructed with a second group of uniformly distributed non-adjacent DFT vectors. In yet another embodiment, the first codebook comprises at least a first precoding matrix and a second precoding matrix, where said first precoding matrix is constructed with a first group of adjacent DFT vectors, and said second precoding matrix is constructed with a second group of uniformly distributed non-adjacent DFT vectors.

    RESOURCE CONFIGURATION FOR EPDCCH
    3.
    发明公开
    RESOURCE CONFIGURATION FOR EPDCCH 审中-公开

    公开(公告)号：US20240215041A1

    公开(公告)日：2024-06-27

    申请号：US18594708

    申请日：2024-03-04

    Applicant: Texas Instruments Incorporated

    Inventor： Runhua Chen ,  Ralf Matthias Bendlin

    IPC: H04W72/23 ,  H04L1/00 ,  H04W28/26 ,  H04W72/00

    CPC classification number: H04W72/23 ,  H04L1/0046 ,  H04W28/26 ,  H04W72/00

    Abstract: A system and method for providing both localized and distributed transmission modes for EPDCCH is disclosed, where one EPDCCH comprises of one or multiple CCEs. Localized versus distributed transmission may be defined in terms of the EPDCCH to CCE resource mapping. In a localized transmission CCEs are restricted to be contained within one PRB. In a distributed transmission a CCE spans over multiple PRBs. A UE can be configured to either receive the EPDCCH only in localized or only in distributed transmissions. A UE can also be configured to expect EPDCCH transmissions in both localized and distributed transmissions. In each PRB configured by the higher layer as an EPDCCH resource, 24 REs that may be used for any DMRS transmission are always reserved and not used for EPDCCH transmission.

    4TX codebook enhancement in LTE
    7.
    发明授权
    4TX codebook enhancement in LTE 有权

    公开(公告)号：US11563470B2

    公开(公告)日：2023-01-24

    申请号：US17403587

    申请日：2021-08-16

    Applicant: Texas Instruments Incorporated

    Inventor： Eko Onggosanusi ,  Runhua Chen ,  Ralf Bendlin

    IPC: H04B7/04 ,  H04B7/0456 ,  H04B7/06 ,  H04B7/0417

    Abstract: Channel state information (CSI) feedback in a wireless communication system is disclosed. A precoding matrix is generated for multi-antenna transmission based on precoding matrix indicator (PMI) feedback, wherein the PMI indicates a choice of precoding matrix derived from a matrix multiplication of two matrices from a first codebook and a second codebook. In one embodiment, the first codebook comprises at least a first precoding matrix constructed with a first group of adjacent Discrete-Fourier-Transform (DFT) vectors. In another embodiment, the first codebook comprises at least a second precoding matrix constructed with a second group of uniformly distributed non-adjacent DFT vectors. In yet another embodiment, the first codebook comprises at least a first precoding matrix and a second precoding matrix, where said first precoding matrix is constructed with a first group of adjacent DFT vectors, and said second precoding matrix is constructed with a second group of uniformly distributed non-adjacent DFT vectors.

    Resource configuration for EPDCCH
    8.
    发明授权
    Resource configuration for EPDCCH 有权

    公开(公告)号：US11457435B2

    公开(公告)日：2022-09-27

    申请号：US16504699

    申请日：2019-07-08

    Applicant: Texas Instruments Incorporated

    Inventor： Runhua Chen ,  Ralf Matthias Bendlin

    IPC: H04W72/02 ,  H04W72/04 ,  H04L1/00 ,  H04W28/26 ,  H04W72/00

    Abstract: A system and method for providing both localized and distributed transmission modes for EPDCCH is disclosed, where one EPDCCH comprises of one or multiple CCEs. Localized versus distributed transmission may be defined in terms of the EPDCCH to CCE resource mapping. In a localized transmission CCEs are restricted to be contained within one PRB. In a distributed transmission a CCE spans over multiple PRBs. A UE can be configured to either receive the EPDCCH only in localized or only in distributed transmissions. A UE can also be configured to expect EPDCCH transmissions in both localized and distributed transmissions. In each PRB configured by the higher layer as an EPDCCH resource, 24 REs that may be used for any DMRS transmission are always reserved and not used for EPDCCH transmission.

    Network signaling for network-assisted interference cancellation and suppression
    10.
    发明授权
    Network signaling for network-assisted interference cancellation and suppression 有权

    公开(公告)号：US11139905B2

    公开(公告)日：2021-10-05

    申请号：US16505066

    申请日：2019-07-08

    Applicant: Texas Instruments Incorporated

    Inventor： Runhua Chen ,  Eko N. Onggosanusi ,  Ralf Matthias Bendlin ,  Anthony Edet Ekpenyong

    IPC: H04J11/00

    Abstract: Embodiments of the invention are directed to a cellular communication network that can determine whether communications between one base station-UE pair may interfere with another UE that is in the same cell or a different cell. The network identifies interference parameters associated with interference signals that may be received by a UE. The interference signals may be generated by the base station itself, such as communications with other UEs, or by a neighboring base station. The base station transmits the interference parameters to the UE. The UE receives the one or more parameters comprising information about signals expected to cause intra-cell or inter-cell interference. The UE then processes received signals using the one or more parameters to suppress the intra-cell or inter-cell interference.

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