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    System and method for channel estimation for generalized frequency division multiplexing (GFDM)
    91.
    发明授权
    System and method for channel estimation for generalized frequency division multiplexing (GFDM) 有权
    用于广义频分复用（GFDM）的信道估计的系统和方法

    公开(公告)号：US09379917B2

    公开(公告)日：2016-06-28

    申请号：US14021840

    申请日：2013-09-09

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Usa Vilaipornsawai ,  Ming Jia

    IPC: H04L27/28 ,  H04L25/02 ,  H04L25/03 ,  H04L5/00

    CPC classification number: H04L25/0224 ,  H04L5/0048 ,  H04L25/0204 ,  H04L25/03006 ,  H04L25/03114 ,  H04L25/03343

    Abstract: Embodiments are provided for pre-cancelling signal interference in Generalized Frequency Division Multiplexing (GFDM). Signal interference is pre-cancelled, at a transmitter, so that clean pilots are observed at a receiver and hence used for channel estimation. Using a Pilot-Interference Cancellation (Pilot-IC) method, interference is pre-cancelled at only pilot symbols. Alternatively, interference is simultaneously pre-cancelled at all symbols using a Transmitter IC (Tx-IC) method. The embodiments also include scattering the pilots over frequency and time resources to estimate channels which are frequency selective and time-variant. The channel estimates at the receiver are then used for single-tap channel equalization at time-frequency grid data points, where no assumption of time-invariant channels is required.

    Abstract translation: 提供了用于在广义频分复用（GFDM）中预消除信号干扰的实施例。 信号干扰在发射机处被预先取消，使得在接收机处观察到干净的导频，并且因此用于信道估计。 使用导频干扰消除（Pilot-IC）方法，仅在导频符号处预先取消干扰。 或者，使用发射机IC（Tx-IC）方法在所有符号处同时预先消除干扰。 实施例还包括在频率和时间资源上散射导频以估计频率选择和时变的信道。 然后在接收机处的信道估计被用于在时频网格数据点的单抽头信道均衡，其中不需要假定时不变的信道。

    System and method for UE fountain relay based network
    96.
    发明授权
    System and method for UE fountain relay based network 有权

    公开(公告)号：US11617226B2

    公开(公告)日：2023-03-28

    申请号：US17164164

    申请日：2021-02-01

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Ming Jia ,  Jianglei Ma ,  Peiying Zhu

    IPC: H04W88/04 ,  H04L1/00 ,  H04L1/18 ,  H04L1/1812

    Abstract: System and method embodiments are provided for enabling flexible and reliable UE-to-UE based relay. The embodiments include using fountain codes for combining signals at a suitable network layer higher than a media access control (MAC) sub-layer and using a MAC sub-layer hybrid automatic repeat request (HARQ) transmission scheme. When a relay UE in a UE group for joint reception receives, from a network access point, a data packet intended for a destination UE in the UE group and including fountain code at the higher network layer, the relay UE sends the data packet to the destination UE and returns a HARQ ACK message at the MAC sub-layer to the access point. The destination UE then receives and decodes the data packet. Subsequently, upon receiving the entire data, the destination UE sends an ACK message at the higher network layer to the access point.

    Frame structure for machine-type communications with adjustable pulse bandwidth
    97.
    发明授权
    Frame structure for machine-type communications with adjustable pulse bandwidth 有权

    公开(公告)号：US11096028B2

    公开(公告)日：2021-08-17

    申请号：US14836695

    申请日：2015-08-26

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Yu Cao ,  Ming Jia ,  Jianglei Ma

    IPC: H04W4/70 ,  H04W72/12

    Abstract: Methods and systems for a frame structure for machine-type communications (MTC) with adjustable pulse bandwidth are described. In an embodiment, the frame structure is an uplink frame structure that illustrates a representation of a plurality of coverage levels. The coverage levels are associated with a coverage range of a base station. Each coverage level is associated with corresponding sub-frames, and each sub-frame within a coverage level has the same sub-frame length and bandwidth.

    System and method of waveform design for operation bandwidth extension
    98.
    发明授权
    System and method of waveform design for operation bandwidth extension 有权

    公开(公告)号：US11050503B2

    公开(公告)日：2021-06-29

    申请号：US14932857

    申请日：2015-11-04

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Jianglei Ma ,  Ming Jia ,  Liqing Zhang ,  Kelvin Kar Kin Au

    IPC: H04J11/00 ,  H04L5/00 ,  H04L25/03 ,  H04L27/26

    Abstract: Different numerologies may be used to communicate orthogonal frequency division multiplexing (OFDM)-based signals over different frequency sub-bands of a given carrier. This may allow the OFDM-based signals to efficiently support diverse traffic types. In some embodiments, the numerology of OFDM-based signal depends on a bandwidth of the frequency sub-band over which the OFDM-based signals are transmitted. In some embodiments, the OFDM-based signals are filtered OFDM (f-OFDM) signals, and the pulse shaping digital filter used to generate the f-OFDM signals allows the receiver to mitigate interference between adjacent f-OFDM signals upon reception, thereby allowing f-OFDM signals to be communicated over consecutive carriers without relying on a guard band.

    System and method for UE fountain relay based network
    99.
    发明授权
    System and method for UE fountain relay based network 有权

    公开(公告)号：US10912148B2

    公开(公告)日：2021-02-02

    申请号：US16173894

    申请日：2018-10-29

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Ming Jia ,  Jianglei Ma ,  Peiying Zhu

    IPC: H04W88/04 ,  H04L1/00 ,  H04L1/18

    Abstract: System and method embodiments are provided for enabling flexible and reliable UE-to-UE based relay. The embodiments include using fountain codes for combining signals at a suitable network layer higher than a media access control (MAC) sub-layer and using a MAC sub-layer hybrid automatic repeat request (HARQ) transmission scheme. When a relay UE in a UE group for joint reception receives, from a network access point, a data packet intended for a destination UE in the UE group and including fountain code at the higher network layer, the relay UE sends the data packet to the destination UE and returns a HARQ ACK message at the MAC sub-layer to the access point. The destination UE then receives and decodes the data packet. Subsequently, upon receiving the entire data, the destination UE sends an ACK message at the higher network layer to the access point.

    Systems and methods for OFDM with flexible sub-carrier spacing and symbol duration
    100.
    发明授权
    Systems and methods for OFDM with flexible sub-carrier spacing and symbol duration 有权

    公开(公告)号：US10826657B2

    公开(公告)日：2020-11-03

    申请号：US15065459

    申请日：2016-03-09

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Jianglei Ma ,  Ming Jia

    IPC: H04L12/24 ,  H04L5/00 ,  H04W72/02 ,  H04B7/26 ,  H04L27/26 ,  H04W72/04 ,  H04W28/06 ,  H04W72/00

    Abstract: Embodiments are provided for supporting variable sub-carrier spacing and symbol duration for transmitting OFDM or other waveform symbols and associated cyclic prefixes. The symbol duration includes the useful symbol length and its associated cyclic prefix length. The variable sub-carrier spacing and symbol duration is determined via parameters indicating the sub-carrier spacing, useful symbol length, and cyclic prefix length. An embodiment method, by a network or a network controller, includes establishing a plurality of multiple access block (MAB) types defining different combinations of sub-carrier spacing and symbol duration for waveform transmissions. The method further includes partitioning a frequency and time plane of a carrier spectrum band into a plurality of MAB regions comprising frequency-time slots for the waveform transmissions. The MAB types are then selected for the MAB regions, wherein one MAB type is assigned to one corresponding MAB region.

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