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    ADAPTIVE MODULO BASE SELECTION FOR NON-LINEAR PRECODING
    4.
    发明申请
    ADAPTIVE MODULO BASE SELECTION FOR NON-LINEAR PRECODING 有权

    公开(公告)号：US20210297302A1

    公开(公告)日：2021-09-23

    申请号：US17264261

    申请日：2018-08-07

    申请人： Chenxi HAO ,  Yu ZHANG ,  Liangming WU ,  Hao XU ,  Wanshi CHEN ,  Peter GAAL ,  QUALCOMM Incorporated

    发明人： Chenxi HAO ,  Yu ZHANG ,  Liangming WU ,  Hao XU ,  Wanshi CHEN ,  Peter GAAL

    IPC分类号： H04L27/34 ,  H04B17/336 ,  H04B17/373 ,  H04L5/00

    摘要： Certain aspects of the present disclosure provide techniques for adaptive modulo base selection for non-linear precoding. Aspects provide a method for wireless communications that can be performed by a base station (BS). The BS adaptively selects a modulo base for a data stream for at least one user equipment (UE) in a transmission to one or more UEs. The BS selects the modulo base based on one or more parameters. The BS transmits a signal for at least one UE of the one or more UEs to identify the selected modulo base. The BS performs the transmission to the one or more UEs. The UE receives the transmission from the BS and the signal for the identification of the selected modulo base. Based on the signal, the UE determines the modulo base for at least one data stream in the transmission and decodes the data stream using the modulo base.

    ENHANCED CSI PROCEDURES FOR FD-MIMO
    7.
    发明申请
    ENHANCED CSI PROCEDURES FOR FD-MIMO 审中-公开

    公开(公告)号：US20180083676A1

    公开(公告)日：2018-03-22

    申请号：US15563357

    申请日：2015-06-03

    申请人： Chao WEI ,  Yu ZHANG ,  Wanshi CHEN ,  Peter GAAL ,  QUALCOMM Incorporated

    发明人： Chao Wei ,  Yu ZHANG ,  Wanshi CHEN ,  Peter GAAL

    IPC分类号： H04B7/04 ,  H04B7/0452

    CPC分类号： H04B7/0478 ,  H04B7/0452 ,  H04B7/0626 ,  H04B7/0632 ,  H04L1/0026 ,  H04L1/0031

    摘要： Enhanced channel state information (CSI) procedures for full dimension-multiple input, multiple output (FD-MIMO) is discussed in which a number of CSI reference signal (CSI-RS) ports configured for a user equipment (UE) is determined. In response to the CSI-RS ports including both horizontal and vertical ports, the UE may determine a first precoding matrix from a plurality of precoding matrices constructed by a Kronecker product of a horizontal precoding matrix and a vertical precoding matrix. The UE selects a predetermined number of precoding vectors out of the first precoding matrix and generates a wideband precoding matrix, based on the selected predetermined number of precoding vectors. The UE reports one or more CSI reports, wherein the CSI reports includes at least one precoding matrix indicator (PMI) for the first precoding matrix and at least an indication of the selection of the predetermined number of precoding vectors.

    ENHANCED CSI FEEDBACK FOR FD-MIMO
    8.
    发明申请
    ENHANCED CSI FEEDBACK FOR FD-MIMO 审中-公开

    公开(公告)号：US20180351621A1

    公开(公告)日：2018-12-06

    申请号：US15780451

    申请日：2016-01-07

    申请人： Chao WEI ,  Wanshi CHEN ,  Peter GAAL ,  Yu ZHANG ,  QUALCOMM Incorporated

    发明人： Chao WEI ,  Wanshi CHEN ,  Peter GAAL ,  Yu ZHANG

    IPC分类号： H04B7/06 ,  H04B7/0456 ,  H04L5/00 ,  H04W24/10

    CPC分类号： H04L5/0057 ,  H04B7/0478 ,  H04B7/06 ,  H04B7/0639 ,  H04L5/0023 ,  H04W72/082

    摘要： Enhanced channel state information (CSI) feedback is disclosed for full dimensional multiple input, multiple output (FD-MIMO) operations. In one aspect, a CSI process is defined that may be used to identify an azimuth and elevation CSI-reference signal (RS) ports. A user equipment (UE) will send a precoding matrix indictor (PMI) report including a precoding matrix indicator (PMI) for the azimuth ports and a PMI for the elevation ports. One of the PMIs is assigned a low rank. The base station will use the two PMIs to create a whole channel precoding matrix. In another aspect, a single CSI process is configured having a plurality of CSI-RS resources. The UE generates channel measurement information for each of the CSI-RS resources, but only sets a CSI report to the base station of a subset of the total number of resources.

    UPLINK TRANSMISSION (UL TX) PREPARATION TIME
    9.
    发明申请
    UPLINK TRANSMISSION (UL TX) PREPARATION TIME 有权

    公开(公告)号：US20220338212A1

    公开(公告)日：2022-10-20

    申请号：US17753996

    申请日：2019-10-26

    申请人： Yiqing CAO ,  Chenxi HAO ,  Peter GAAL ,  QUALCOMM Incorporated

    发明人： Yiqing CAO ,  Chenxi HAO ,  Peter GAAL

    IPC分类号： H04W72/12 ,  H04L5/00

    摘要： Certain aspects of the present disclosure provide techniques for uplink scheduling for communication on an uplink from a user equipment (UE) to a base station (BS). The uplink scheduling is based on uplink transmission (UL Tx) switching time and/or uplink data preparation time of the UE. The uplink data preparation time is calculated based on the UL Tx switching time. For example, a UE can report to a BS at least one of an indication of a UL Tx switching time and an uplink data preparation time of the UE. In return, the UE can receive an indication of uplink scheduling from the BS, which the UE can use to communicate with the BS.

    UPLINK CARRIER SWITCHING FOR WIRELESS DEVICES
    10.
    发明申请
    UPLINK CARRIER SWITCHING FOR WIRELESS DEVICES 有权

    公开(公告)号：US20220386337A1

    公开(公告)日：2022-12-01

    申请号：US17768539

    申请日：2019-11-01

    申请人： Chenxi HAO ,  Yiqing CAO ,  Bo CHEN ,  Peter GAAL ,  Hao XU ,  QUALCOMM INCORPORATED

    发明人： Chenxi HAO ,  Yiqing CAO ,  Bo CHEN ,  Peter GAAL ,  Hao XU

    IPC分类号： H04W72/12

    摘要： Methods, systems, and devices for wireless communications are described. In some cases, a user equipment (UE) may In support multiple component carriers that may be used to transmit uplink transmissions. One carrier may be used at a time such that the may switch between the carriers based on an uplink transmission schedule. In some cases, switching may be limited by a consecutive uplink switching rule or UE capability. In some cases, the gap between two consecutive uplink carrier switching operations may be limited to a resource (e.g., slot, symbol), such that the UE may expect to perform at most one switching operation per resource. In some implementations, the gap between two consecutive uplink carrier switching operations may be limited to a duration (e. g., 14 symbols, 4 symbols), such that the UE may expect to perform at most one switching operation per a duration less than or equal to a threshold.